Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits)
[IPV6]: Consolidate the ip6_pol_route_(input|output) pair
[TCP]: Make snd_cwnd_cnt 32-bit
[TCP]: Update the /proc/net/tcp documentation
[NETNS]: Don't panic on creating the namespace's loopback
[NEIGH]: Ensure that pneigh_lookup is protected with RTNL
[INET]: kmalloc+memset -> kzalloc in frag_alloc_queue
[ISDN]: Fix compile with CONFIG_ISDN_X25 disabled.
[IPV6]: Replace sk_buff ** with sk_buff * in input handlers
[SELINUX]: Update for netfilter ->hook() arg changes.
[INET]: Consolidate the xxx_put
[INET]: Small cleanup for xxx_put after evictor consolidation
[INET]: Consolidate the xxx_evictor
[INET]: Consolidate the xxx_frag_destroy
[INET]: Consolidate xxx_the secret_rebuild
[INET]: Consolidate the xxx_frag_kill
[INET]: Collect common frag sysctl variables together
[INET]: Collect frag queues management objects together
[INET]: Move common fields from frag_queues in one place.
[TG3]: Fix performance regression on 5705.
[ISDN]: Remove local copy of device name to make sure renames work.
...

Documentation/networking/proc_net_tcp.txt

···
 This document describes the interfaces /proc/net/tcp and /proc/net/tcp6.
+Note that these interfaces are deprecated in favor of tcp_diag.
 
 These /proc interfaces provide information about currently active TCP 
-connections, and are implemented by tcp_get_info() in net/ipv4/tcp_ipv4.c and
-tcp6_get_info() in net/ipv6/tcp_ipv6.c, respectively.
+connections, and are implemented by tcp4_seq_show() in net/ipv4/tcp_ipv4.c
+and tcp6_seq_show() in net/ipv6/tcp_ipv6.c, respectively.
 
 It will first list all listening TCP sockets, and next list all established
 TCP connections. A typical entry of /proc/net/tcp would look like this (split 

drivers/isdn/i4l/isdn_net.c

···
 			l->cps = (l->transcount * HZ) / (jiffies - last_jiffies);
 		l->transcount = 0;
 		if (dev->net_verbose > 3)
-			printk(KERN_DEBUG "%s: %d bogocps\n", l->name, l->cps);
+			printk(KERN_DEBUG "%s: %d bogocps\n", p->dev->name, l->cps);
 		if ((l->flags & ISDN_NET_CONNECTED) && (!l->dialstate)) {
 			anymore = 1;
 			l->huptimer++;
···
 					if (l->hupflags & ISDN_CHARGEHUP) {
 						if (l->hupflags & ISDN_WAITCHARGE) {
 							printk(KERN_DEBUG "isdn_net: Hupflags of %s are %X\n",
-							       l->name, l->hupflags);
+							       p->dev->name, l->hupflags);
 							isdn_net_hangup(p->dev);
 						} else if (time_after(jiffies, l->chargetime + l->chargeint)) {
 							printk(KERN_DEBUG
 							       "isdn_net: %s: chtime = %lu, chint = %d\n",
-							       l->name, l->chargetime, l->chargeint);
+							       p->dev->name, l->chargetime, l->chargeint);
 							isdn_net_hangup(p->dev);
 						}
 					} else
···
 #endif
 					isdn_net_lp_disconnected(lp);
 					isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
-					printk(KERN_INFO "%s: remote hangup\n", lp->name);
-					printk(KERN_INFO "%s: Chargesum is %d\n", lp->name,
+					printk(KERN_INFO "%s: remote hangup\n", p->dev->name);
+					printk(KERN_INFO "%s: Chargesum is %d\n", p->dev->name,
 					       lp->charge);
 					isdn_net_unbind_channel(lp);
 					return 1;
···
 								isdn_net_add_to_bundle(nd, lp);
 							}
 						}
-						printk(KERN_INFO "isdn_net: %s connected\n", lp->name);
+						printk(KERN_INFO "isdn_net: %s connected\n", p->dev->name);
 						/* If first Chargeinfo comes before B-Channel connect,
 						 * we correct the timestamp here.
 						 */
···
 					lp->hupflags |= ISDN_HAVECHARGE;
 				lp->chargetime = jiffies;
 				printk(KERN_DEBUG "isdn_net: Got CINF chargetime of %s now %lu\n",
-				       lp->name, lp->chargetime);
+				       p->dev->name, lp->chargetime);
 				return 1;
 		}
 	}
···
 
 #ifdef ISDN_DEBUG_NET_DIAL
 		if (lp->dialstate)
-			printk(KERN_DEBUG "%s: dialstate=%d\n", lp->name, lp->dialstate);
+			printk(KERN_DEBUG "%s: dialstate=%d\n", p->dev->name, lp->dialstate);
 #endif
 		switch (lp->dialstate) {
 			case 0:
···
 				lp->dial = lp->phone[1];
 				if (!lp->dial) {
 					printk(KERN_WARNING "%s: phone number deleted?\n",
-					       lp->name);
+					       p->dev->name);
 					isdn_net_hangup(p->dev);
 					break;
 				}
···
 				cmd.arg = lp->isdn_channel;
 				if (!lp->dial) {
 					printk(KERN_WARNING "%s: phone number deleted?\n",
-					       lp->name);
+					       p->dev->name);
 					isdn_net_hangup(p->dev);
 					break;
 				}
 				if (!strncmp(lp->dial->num, "LEASED", strlen("LEASED"))) {
 					lp->dialstate = 4;
-					printk(KERN_INFO "%s: Open leased line ...\n", lp->name);
+					printk(KERN_INFO "%s: Open leased line ...\n", p->dev->name);
 				} else {
 					if(lp->dialtimeout > 0)
 						if (time_after(jiffies, lp->dialstarted + lp->dialtimeout)) {
···
 						dev->usage[i] |= ISDN_USAGE_OUTGOING;
 						isdn_info_update();
 					}
-					printk(KERN_INFO "%s: dialing %d %s... %s\n", lp->name,
+					printk(KERN_INFO "%s: dialing %d %s... %s\n", p->dev->name,
 					       lp->dialretry, cmd.parm.setup.phone,
 					       (cmd.parm.setup.si1 == 1) ? "DOV" : "");
 					lp->dtimer = 0;
···
 				 */
 				if (lp->dtimer++ > lp->cbdelay)
 				{
-					printk(KERN_INFO "%s: hangup waiting for callback ...\n", lp->name);
+					printk(KERN_INFO "%s: hangup waiting for callback ...\n", p->dev->name);
 					lp->dtimer = 0;
 					lp->dialstate = 4;
 					cmd.driver = lp->isdn_device;
···
 				break;
 			default:
 				printk(KERN_WARNING "isdn_net: Illegal dialstate %d for device %s\n",
-				       lp->dialstate, lp->name);
+				       lp->dialstate, p->dev->name);
 		}
 		p = (isdn_net_dev *) p->next;
 	}
···
 			if (slp->flags & ISDN_NET_CONNECTED) {
 				printk(KERN_INFO
 					"isdn_net: hang up slave %s before %s\n",
-					slp->name, lp->name);
+					lp->slave->name, d->name);
 				isdn_net_hangup(lp->slave);
 			}
 		}
-		printk(KERN_INFO "isdn_net: local hangup %s\n", lp->name);
+		printk(KERN_INFO "isdn_net: local hangup %s\n", d->name);
 #ifdef CONFIG_ISDN_PPP
 		if (lp->p_encap == ISDN_NET_ENCAP_SYNCPPP)
 			isdn_ppp_free(lp);
···
 		cmd.command = ISDN_CMD_HANGUP;
 		cmd.arg = lp->isdn_channel;
 		isdn_command(&cmd);
-		printk(KERN_INFO "%s: Chargesum is %d\n", lp->name, lp->charge);
+		printk(KERN_INFO "%s: Chargesum is %d\n", d->name, lp->charge);
 		isdn_all_eaz(lp->isdn_device, lp->isdn_channel);
 	}
 	isdn_net_unbind_channel(lp);
···
 		/* fall back to old isdn_net_log_packet method() */
 		char * buf = skb->data;
 
-		printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->name);
+		printk(KERN_DEBUG "isdn_net: protocol %04x is buggy, dev %s\n", skb->protocol, lp->netdev->dev->name);
 		p = buf;
 		proto = ETH_P_IP;
 		switch (lp->p_encap) {
···
 	ret = isdn_writebuf_skb_stub(lp->isdn_device, lp->isdn_channel, 1, skb);
 	if (ret != len) {
 		/* we should never get here */
-		printk(KERN_WARNING "%s: HL driver queue full\n", lp->name);
+		printk(KERN_WARNING "%s: HL driver queue full\n", lp->netdev->dev->name);
 		goto error;
 	}
 	
···
 				mod_timer(&lp->cisco_timer, expires);
 				printk(KERN_INFO "%s: Keepalive period set "
 					"to %d seconds.\n",
-					lp->name, lp->cisco_keepalive_period);
+					dev->name, lp->cisco_keepalive_period);
 			}
 			break;
 
···
 		lp->cisco_line_state = 0;
 		printk (KERN_WARNING
 				"UPDOWN: Line protocol on Interface %s,"
-				" changed state to down\n", lp->name);
+				" changed state to down\n", lp->netdev->dev->name);
 		/* should stop routing higher-level data accross */
 	} else if ((!lp->cisco_line_state) &&
 		(myseq_diff >= 0) && (myseq_diff <= 2)) {
···
 		lp->cisco_line_state = 1;
 		printk (KERN_WARNING
 				"UPDOWN: Line protocol on Interface %s,"
-				" changed state to up\n", lp->name);
+				" changed state to up\n", lp->netdev->dev->name);
 		/* restart routing higher-level data accross */
 	}
 
 	if (lp->cisco_debserint)
 		printk (KERN_DEBUG "%s: HDLC "
 			"myseq %lu, mineseen %lu%c, yourseen %lu, %s\n",
-			lp->name, last_cisco_myseq, lp->cisco_mineseen,
+			lp->netdev->dev->name, last_cisco_myseq, lp->cisco_mineseen,
 			((last_cisco_myseq == lp->cisco_mineseen) ? '*' : 040),
 			lp->cisco_yourseq,
 			((lp->cisco_line_state) ? "line up" : "line down"));
···
 			"remote ip: %d.%d.%d.%d, "
 			"local ip: %d.%d.%d.%d "
 			"mask: %d.%d.%d.%d\n",
-		       lp->name,
+		       lp->netdev->dev->name,
 		       HIPQUAD(addr),
 		       HIPQUAD(local),
 		       HIPQUAD(mask));
···
   slarp_reply_out:
 		 printk(KERN_INFO "%s: got invalid slarp "
 				 "reply (%d.%d.%d.%d/%d.%d.%d.%d) "
-				 "- ignored\n", lp->name,
+				 "- ignored\n", lp->netdev->dev->name,
 				 HIPQUAD(addr), HIPQUAD(mask));
 		break;
 	case CISCO_SLARP_KEEPALIVE:
···
 				lp->cisco_last_slarp_in) {
 			printk(KERN_DEBUG "%s: Keepalive period mismatch - "
 				"is %d but should be %d.\n",
-				lp->name, period, lp->cisco_keepalive_period);
+				lp->netdev->dev->name, period,
+				lp->cisco_keepalive_period);
 		}
 		lp->cisco_last_slarp_in = jiffies;
 		p += get_u32(p, &my_seq);
···
 	
 	if (addr != CISCO_ADDR_UNICAST && addr != CISCO_ADDR_BROADCAST) {
 		printk(KERN_WARNING "%s: Unknown Cisco addr 0x%02x\n",
-		       lp->name, addr);
+		       lp->netdev->dev->name, addr);
 		goto out_free;
 	}
 	if (ctrl != CISCO_CTRL) {
 		printk(KERN_WARNING "%s: Unknown Cisco ctrl 0x%02x\n",
-		       lp->name, ctrl);
+		       lp->netdev->dev->name, ctrl);
 		goto out_free;
 	}
 
···
 	case CISCO_TYPE_CDP:
 		if (lp->cisco_debserint)
 			printk(KERN_DEBUG "%s: Received CDP packet. use "
-				"\"no cdp enable\" on cisco.\n", lp->name);
+				"\"no cdp enable\" on cisco.\n",
+				lp->netdev->dev->name);
 		goto out_free;
 	default:
 		/* no special cisco protocol */
···
 				};
 #endif /* CONFIG_ISDN_X25 */
 			printk(KERN_WARNING "%s: unknown encapsulation, dropping\n",
-			       lp->name);
+			       lp->netdev->dev->name);
 			kfree_skb(skb);
 			return;
 	}
···
 			wret = matchret;
 #ifdef ISDN_DEBUG_NET_ICALL
 		printk(KERN_DEBUG "n_fi: if='%s', l.msn=%s, l.flags=%d, l.dstate=%d\n",
-		       lp->name, lp->msn, lp->flags, lp->dialstate);
+		       p->dev->name, lp->msn, lp->flags, lp->dialstate);
 #endif
 		if ((!matchret) &&                                        /* EAZ is matching   */
 		    (((!(lp->flags & ISDN_NET_CONNECTED)) &&              /* but not connected */
···
 				 * */
 				if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
 					printk(KERN_INFO "incoming call, interface %s `stopped' -> rejected\n",
-					       lp->name);
+					       p->dev->name);
 					return 3;
 				}
 				/*
···
 				 */
 				if (!isdn_net_device_started(p)) {
 					printk(KERN_INFO "%s: incoming call, interface down -> rejected\n",
-					       lp->name);
+					       p->dev->name);
 					return 3;
 				}
 				/* Interface is up, now see if it's a slave. If so, see if
···
 				 */
 				if (lp->master) {
 					isdn_net_local *mlp = (isdn_net_local *) lp->master->priv;
-					printk(KERN_DEBUG "ICALLslv: %s\n", lp->name);
-					printk(KERN_DEBUG "master=%s\n", mlp->name);
+					printk(KERN_DEBUG "ICALLslv: %s\n", p->dev->name);
+					printk(KERN_DEBUG "master=%s\n", lp->master->name);
 					if (mlp->flags & ISDN_NET_CONNECTED) {
 						printk(KERN_DEBUG "master online\n");
 						/* Master is online, find parent-slave (master if first slave) */
···
 					 * */
 					if (ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_OFF) {
 						printk(KERN_INFO "incoming call for callback, interface %s `off' -> rejected\n",
-						       lp->name);
+						       p->dev->name);
 						return 3;
 					}
 					printk(KERN_DEBUG "%s: call from %s -> %s, start callback\n",
-					       lp->name, nr, eaz);
+					       p->dev->name, nr, eaz);
 					if (lp->phone[1]) {
 						/* Grab a free ISDN-Channel */
 						spin_lock_irqsave(&dev->lock, flags);
···
 						 		lp->msn)
 								) < 0) {
 
-							printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n", lp->name);
+							printk(KERN_WARNING "isdn_net_find_icall: No channel for %s\n",
+								p->dev->name);
 							spin_unlock_irqrestore(&dev->lock, flags);
 							return 0;
 						}
···
 						/* Initiate dialing by returning 2 or 4 */
 						return (lp->flags & ISDN_NET_CBHUP) ? 2 : 4;
 					} else
-						printk(KERN_WARNING "isdn_net: %s: No phone number\n", lp->name);
+						printk(KERN_WARNING "isdn_net: %s: No phone number\n",
+							p->dev->name);
 					return 0;
 				} else {
-					printk(KERN_DEBUG "%s: call from %s -> %s accepted\n", lp->name, nr,
-					       eaz);
+					printk(KERN_DEBUG "%s: call from %s -> %s accepted\n",
+						p->dev->name, nr, eaz);
 					/* if this interface is dialing, it does it probably on a different
 					   device, so free this device */
 					if ((lp->dialstate == 4) || (lp->dialstate == 12)) {
···
 	isdn_net_dev *p = dev->netdev;
 
 	while (p) {
-		if (!strcmp(p->local->name, name))
+		if (!strcmp(p->dev->name, name))
 			return p;
 		p = (isdn_net_dev *) p->next;
 	}
···
 					lp->pre_device,
 					lp->pre_channel,
 					lp->msn)) < 0) {
-				printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n", lp->name);
+				printk(KERN_WARNING "isdn_net_force_dial: No channel for %s\n",
+					lp->netdev->dev->name);
 				spin_unlock_irqrestore(&dev->lock, flags);
 				return -EAGAIN;
 			}
···
 		return NULL;
 	}
 	if (name == NULL)
-		name = "         ";
+		return NULL;
 	if (!(netdev = kzalloc(sizeof(isdn_net_dev), GFP_KERNEL))) {
 		printk(KERN_WARNING "isdn_net: Could not allocate net-device\n");
 		return NULL;
···
 		return NULL;
 	}
 	netdev->local = netdev->dev->priv;
-	strcpy(netdev->local->name, netdev->dev->name);
 	netdev->dev->init = isdn_net_init;
 	if (master) {
 		/* Device shall be a slave */
···
 #endif
 			if (isdn_net_device_started(p)) {
 				printk(KERN_WARNING "%s: cannot change encap when if is up\n",
-				       lp->name);
+				       p->dev->name);
 				return -EBUSY;
 			}
 #ifdef CONFIG_ISDN_X25
···
 		case ISDN_NET_ENCAP_SYNCPPP:
 #ifndef CONFIG_ISDN_PPP
 			printk(KERN_WARNING "%s: SyncPPP support not configured\n",
-			       lp->name);
+			       p->dev->name);
 			return -EINVAL;
 #else
 			p->dev->type = ARPHRD_PPP;	/* change ARP type */
···
 		case ISDN_NET_ENCAP_X25IFACE:
 #ifndef CONFIG_ISDN_X25
 			printk(KERN_WARNING "%s: isdn-x25 support not configured\n",
-			       p->local->name);
+			       p->dev->name);
 			return -EINVAL;
 #else
 			p->dev->type = ARPHRD_X25;	/* change ARP type */
···
 				break;
 			printk(KERN_WARNING
 			       "%s: encapsulation protocol %d not supported\n",
-			       p->local->name, cfg->p_encap);
+			       p->dev->name, cfg->p_encap);
 			return -EINVAL;
 		}
 		if (strlen(cfg->drvid)) {
···
 		cfg->pppbind = lp->pppbind;
 		cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
 		cfg->dialwait = lp->dialwait / HZ;
-		if (lp->slave)
-			strcpy(cfg->slave, ((isdn_net_local *) lp->slave->priv)->name);
-		else
+		if (lp->slave) {
+			if (strlen(lp->slave->name) > 8)
+				strcpy(cfg->slave, "too-long");
+			else
+				strcpy(cfg->slave, lp->slave->name);
+		} else
 			cfg->slave[0] = '\0';
-		if (lp->master)
-			strcpy(cfg->master, ((isdn_net_local *) lp->master->priv)->name);
-		else
+		if (lp->master) {
+			if (strlen(lp->master->name) > 8)
+				strcpy(cfg->master, "too-long");
+			strcpy(cfg->master, lp->master->name);
+		} else
 			cfg->master[0] = '\0';
 		return 0;
 	}
···
 	isdn_net_dev *p = isdn_net_findif(phone->name);
 	int ch, dv, idx;
 
-	if (!p) return -ENODEV;
+	if (!p)
+		return -ENODEV;
 	/*
 	 * Theoretical race: while this executes, the remote number might
 	 * become invalid (hang up) or change (new connection), resulting
···
 	 */
 	ch = p->local->isdn_channel;
 	dv = p->local->isdn_device;
-	if(ch<0 && dv<0) return -ENOTCONN;
+	if(ch < 0 && dv < 0)
+		return -ENOTCONN;
 	idx = isdn_dc2minor(dv, ch);
-	if (idx<0) return -ENODEV;
+	if (idx <0 )
+		return -ENODEV;
 	/* for pre-bound channels, we need this extra check */
-	if ( strncmp(dev->num[idx],"???",3) == 0 ) return -ENOTCONN;
-	strncpy(phone->phone,dev->num[idx],ISDN_MSNLEN);
-	phone->outgoing=USG_OUTGOING(dev->usage[idx]);
-	if ( copy_to_user(peer,phone,sizeof(*peer)) ) return -EFAULT;
+	if (strncmp(dev->num[idx], "???", 3) == 0)
+		return -ENOTCONN;
+	strncpy(phone->phone, dev->num[idx], ISDN_MSNLEN);
+	phone->outgoing = USG_OUTGOING(dev->usage[idx]);
+	if (copy_to_user(peer, phone, sizeof(*peer)))
+		return -EFAULT;
 	return 0;
 }
 /*
···
 		dev->netdev = p->next;
 	if (p->local->slave) {
 		/* If this interface has a slave, remove it also */
-		char *slavename = ((isdn_net_local *) (p->local->slave->priv))->name;
+		char *slavename = p->local->slave->name;
 		isdn_net_dev *n = dev->netdev;
 		q = NULL;
 		while (n) {
-			if (!strcmp(n->local->name, slavename)) {
+			if (!strcmp(n->dev->name, slavename)) {
 				spin_unlock_irqrestore(&dev->lock, flags);
 				isdn_net_realrm(n, q);
 				spin_lock_irqsave(&dev->lock, flags);
 				break;
 			}
 			q = n;
-			n = (isdn_net_dev *) n->next;
+			n = (isdn_net_dev *)n->next;
 		}
 	}
 	spin_unlock_irqrestore(&dev->lock, flags);
···
 	p = dev->netdev;
 	q = NULL;
 	while (p) {
-		if (!strcmp(p->local->name, name)) {
+		if (!strcmp(p->dev->name, name)) {
 			spin_unlock_irqrestore(&dev->lock, flags);
 			return (isdn_net_realrm(p, q));
 		}

drivers/isdn/i4l/isdn_ppp.c

···
 		retval = -1;
 		goto out;
 	}
-	unit = isdn_ppp_if_get_unit(lp->name);	/* get unit number from interface name .. ugly! */
+	/* get unit number from interface name .. ugly! */
+	unit = isdn_ppp_if_get_unit(lp->netdev->dev->name);
 	if (unit < 0) {
-		printk(KERN_ERR "isdn_ppp_bind: illegal interface name %s.\n", lp->name);
+		printk(KERN_ERR "isdn_ppp_bind: illegal interface name %s.\n",
+			lp->netdev->dev->name);
 		retval = -1;
 		goto out;
 	}
···
 		case PPPIOCGIFNAME:
 			if(!lp)
 				return -EINVAL;
-			if ((r = set_arg(argp, lp->name, strlen(lp->name))))
+			if ((r = set_arg(argp, lp->netdev->dev->name,
+				strlen(lp->netdev->dev->name))))
 				return r;
 			break;
 		case PPPIOCGMPFLAGS:	/* get configuration flags */

drivers/net/loopback.c

···
 	if (err)
 		goto out_free_netdev;
 
-	err = 0;
 	net->loopback_dev = dev;
+	return 0;
 
-out:
-	if (err)
-		panic("loopback: Failed to register netdevice: %d\n", err);
-	return err;
 
 out_free_netdev:
 	free_netdev(dev);
-	goto out;
+out:
+	if (net == &init_net)
+		panic("loopback: Failed to register netdevice: %d\n", err);
+	return err;
 }
 
 static __net_exit void loopback_net_exit(struct net *net)

drivers/net/niu.c

···
 	val = nr64(ESPC_PHY_TYPE);
 	switch (np->port) {
 	case 0:
-		val = (val & ESPC_PHY_TYPE_PORT0) >>
+		val8 = (val & ESPC_PHY_TYPE_PORT0) >>
 			ESPC_PHY_TYPE_PORT0_SHIFT;
 		break;
 	case 1:
-		val = (val & ESPC_PHY_TYPE_PORT1) >>
+		val8 = (val & ESPC_PHY_TYPE_PORT1) >>
 			ESPC_PHY_TYPE_PORT1_SHIFT;
 		break;
 	case 2:
-		val = (val & ESPC_PHY_TYPE_PORT2) >>
+		val8 = (val & ESPC_PHY_TYPE_PORT2) >>
 			ESPC_PHY_TYPE_PORT2_SHIFT;
 		break;
 	case 3:
-		val = (val & ESPC_PHY_TYPE_PORT3) >>
+		val8 = (val & ESPC_PHY_TYPE_PORT3) >>
 			ESPC_PHY_TYPE_PORT3_SHIFT;
 		break;
 	default:
···
 			np->port);
 		return -EINVAL;
 	}
-	niudbg(PROBE, "SPROM: PHY type %llx\n", (unsigned long long) val);
+	niudbg(PROBE, "SPROM: PHY type %x\n", val8);
 
-	switch (val) {
+	switch (val8) {
 	case ESPC_PHY_TYPE_1G_COPPER:
 		/* 1G copper, MII */
 		np->flags &= ~(NIU_FLAGS_FIBER |
···
 		break;
 
 	default:
-		dev_err(np->device, PFX "Bogus SPROM phy type %llu\n",
-			(unsigned long long) val);
+		dev_err(np->device, PFX "Bogus SPROM phy type %u\n", val8);
 		return -EINVAL;
 	}
 
···
 	val = nr64(ESPC_MOD_STR_LEN);
 	niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
 	       (unsigned long long) val);
-	if (val > 8 * 4)
+	if (val >= 8 * 4)
 		return -EINVAL;
 
 	for (i = 0; i < val; i += 4) {
···
 	val = nr64(ESPC_BD_MOD_STR_LEN);
 	niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
 	       (unsigned long long) val);
-	if (val > 4 * 4)
+	if (val >= 4 * 4)
 		return -EINVAL;
 
 	for (i = 0; i < val; i += 4) {

drivers/net/tg3.c

···
 
 #define DRV_MODULE_NAME		"tg3"
 #define PFX DRV_MODULE_NAME	": "
-#define DRV_MODULE_VERSION	"3.83"
-#define DRV_MODULE_RELDATE	"October 10, 2007"
+#define DRV_MODULE_VERSION	"3.84"
+#define DRV_MODULE_RELDATE	"October 12, 2007"
 
 #define TG3_DEF_MAC_MODE	0
 #define TG3_DEF_RX_MODE		0
···
 
 	pci_write_config_dword(tp->pdev, TG3PCI_COMMAND, tp->pci_cmd);
 
+	if (!(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS)) {
+		pci_write_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
+				      tp->pci_cacheline_sz);
+		pci_write_config_byte(tp->pdev, PCI_LATENCY_TIMER,
+				      tp->pci_lat_timer);
+	}
 	/* Make sure PCI-X relaxed ordering bit is clear. */
 	if (tp->pcix_cap) {
 		u16 pcix_cmd;

include/linux/if_bridge.h

···
 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
 extern struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p,
 					       struct sk_buff *skb);
-extern int (*br_should_route_hook)(struct sk_buff **pskb);
+extern int (*br_should_route_hook)(struct sk_buff *skb);
 
 #endif
 

include/linux/isdn.h

···
 /* Local interface-data */
 typedef struct isdn_net_local_s {
   ulong                  magic;
-  char                   name[10];     /* Name of device                   */
   struct net_device_stats stats;       /* Ethernet Statistics              */
   int                    isdn_device;  /* Index to isdn-device             */
   int                    isdn_channel; /* Index to isdn-channel            */

include/linux/netfilter.h

···
 struct net_device;
 
 typedef unsigned int nf_hookfn(unsigned int hooknum,
-			       struct sk_buff **skb,
+			       struct sk_buff *skb,
 			       const struct net_device *in,
 			       const struct net_device *out,
 			       int (*okfn)(struct sk_buff *));
···
 		   struct nf_loginfo *li,
 		   const char *fmt, ...);
 
-int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
+int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
 		 struct net_device *indev, struct net_device *outdev,
 		 int (*okfn)(struct sk_buff *), int thresh);
 
···
  *	value indicates the packet has been consumed by the hook.
  */
 static inline int nf_hook_thresh(int pf, unsigned int hook,
-				 struct sk_buff **pskb,
+				 struct sk_buff *skb,
 				 struct net_device *indev,
 				 struct net_device *outdev,
 				 int (*okfn)(struct sk_buff *), int thresh,
···
 	if (list_empty(&nf_hooks[pf][hook]))
 		return 1;
 #endif
-	return nf_hook_slow(pf, hook, pskb, indev, outdev, okfn, thresh);
+	return nf_hook_slow(pf, hook, skb, indev, outdev, okfn, thresh);
 }
 
-static inline int nf_hook(int pf, unsigned int hook, struct sk_buff **pskb,
+static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
 			  struct net_device *indev, struct net_device *outdev,
 			  int (*okfn)(struct sk_buff *))
 {
-	return nf_hook_thresh(pf, hook, pskb, indev, outdev, okfn, INT_MIN, 1);
+	return nf_hook_thresh(pf, hook, skb, indev, outdev, okfn, INT_MIN, 1);
 }
                    
 /* Activate hook; either okfn or kfree_skb called, unless a hook
···
 
 #define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh)	       \
 ({int __ret;								       \
-if ((__ret=nf_hook_thresh(pf, hook, &(skb), indev, outdev, okfn, thresh, 1)) == 1)\
+if ((__ret=nf_hook_thresh(pf, hook, (skb), indev, outdev, okfn, thresh, 1)) == 1)\
 	__ret = (okfn)(skb);						       \
 __ret;})
 
 #define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond)		       \
 ({int __ret;								       \
-if ((__ret=nf_hook_thresh(pf, hook, &(skb), indev, outdev, okfn, INT_MIN, cond)) == 1)\
+if ((__ret=nf_hook_thresh(pf, hook, (skb), indev, outdev, okfn, INT_MIN, cond)) == 1)\
 	__ret = (okfn)(skb);						       \
 __ret;})
 
···
 /* Call this before modifying an existing packet: ensures it is
    modifiable and linear to the point you care about (writable_len).
    Returns true or false. */
-extern int skb_make_writable(struct sk_buff **pskb, unsigned int writable_len);
+extern int skb_make_writable(struct sk_buff *skb, unsigned int writable_len);
 
 static inline void nf_csum_replace4(__sum16 *sum, __be32 from, __be32 to)
 {
···
 				    unsigned int dataoff, u_int8_t protocol);
 	void		(*saveroute)(const struct sk_buff *skb,
 				     struct nf_info *info);
-	int		(*reroute)(struct sk_buff **skb,
+	int		(*reroute)(struct sk_buff *skb,
 				   const struct nf_info *info);
 	int		route_key_size;
 };
···
 #define NF_HOOK(pf, hook, skb, indev, outdev, okfn) (okfn)(skb)
 #define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) (okfn)(skb)
 static inline int nf_hook_thresh(int pf, unsigned int hook,
-				 struct sk_buff **pskb,
+				 struct sk_buff *skb,
 				 struct net_device *indev,
 				 struct net_device *outdev,
 				 int (*okfn)(struct sk_buff *), int thresh,
 				 int cond)
 {
-	return okfn(*pskb);
+	return okfn(skb);
 }
-static inline int nf_hook(int pf, unsigned int hook, struct sk_buff **pskb,
+static inline int nf_hook(int pf, unsigned int hook, struct sk_buff *skb,
 			  struct net_device *indev, struct net_device *outdev,
 			  int (*okfn)(struct sk_buff *))
 {

include/linux/netfilter/nf_conntrack_amanda.h

···
 #define _NF_CONNTRACK_AMANDA_H
 /* AMANDA tracking. */
 
-extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
 					  enum ip_conntrack_info ctinfo,
 					  unsigned int matchoff,
 					  unsigned int matchlen,

include/linux/netfilter/nf_conntrack_ftp.h

···
 
 /* For NAT to hook in when we find a packet which describes what other
  * connection we should expect. */
-extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
 				       enum ip_conntrack_info ctinfo,
 				       enum nf_ct_ftp_type type,
 				       unsigned int matchoff,

include/linux/netfilter/nf_conntrack_h323.h

···
 				     struct nf_conntrack_expect *this);
 extern void nf_conntrack_q931_expect(struct nf_conn *new,
 				     struct nf_conntrack_expect *this);
-extern int (*set_h245_addr_hook) (struct sk_buff **pskb,
+extern int (*set_h245_addr_hook) (struct sk_buff *skb,
 				  unsigned char **data, int dataoff,
 				  H245_TransportAddress *taddr,
 				  union nf_conntrack_address *addr,
 				  __be16 port);
-extern int (*set_h225_addr_hook) (struct sk_buff **pskb,
+extern int (*set_h225_addr_hook) (struct sk_buff *skb,
 				  unsigned char **data, int dataoff,
 				  TransportAddress *taddr,
 				  union nf_conntrack_address *addr,
 				  __be16 port);
-extern int (*set_sig_addr_hook) (struct sk_buff **pskb,
+extern int (*set_sig_addr_hook) (struct sk_buff *skb,
 				 struct nf_conn *ct,
 				 enum ip_conntrack_info ctinfo,
 				 unsigned char **data,
 				 TransportAddress *taddr, int count);
-extern int (*set_ras_addr_hook) (struct sk_buff **pskb,
+extern int (*set_ras_addr_hook) (struct sk_buff *skb,
 				 struct nf_conn *ct,
 				 enum ip_conntrack_info ctinfo,
 				 unsigned char **data,
 				 TransportAddress *taddr, int count);
-extern int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
+extern int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
 				 struct nf_conn *ct,
 				 enum ip_conntrack_info ctinfo,
 				 unsigned char **data, int dataoff,
···
 				 __be16 port, __be16 rtp_port,
 				 struct nf_conntrack_expect *rtp_exp,
 				 struct nf_conntrack_expect *rtcp_exp);
-extern int (*nat_t120_hook) (struct sk_buff **pskb, struct nf_conn *ct,
+extern int (*nat_t120_hook) (struct sk_buff *skb, struct nf_conn *ct,
 			     enum ip_conntrack_info ctinfo,
 			     unsigned char **data, int dataoff,
 			     H245_TransportAddress *taddr, __be16 port,
 			     struct nf_conntrack_expect *exp);
-extern int (*nat_h245_hook) (struct sk_buff **pskb, struct nf_conn *ct,
+extern int (*nat_h245_hook) (struct sk_buff *skb, struct nf_conn *ct,
 			     enum ip_conntrack_info ctinfo,
 			     unsigned char **data, int dataoff,
 			     TransportAddress *taddr, __be16 port,
 			     struct nf_conntrack_expect *exp);
-extern int (*nat_callforwarding_hook) (struct sk_buff **pskb,
+extern int (*nat_callforwarding_hook) (struct sk_buff *skb,
 				       struct nf_conn *ct,
 				       enum ip_conntrack_info ctinfo,
 				       unsigned char **data, int dataoff,
 				       TransportAddress *taddr,
 				       __be16 port,
 				       struct nf_conntrack_expect *exp);
-extern int (*nat_q931_hook) (struct sk_buff **pskb, struct nf_conn *ct,
+extern int (*nat_q931_hook) (struct sk_buff *skb, struct nf_conn *ct,
 			     enum ip_conntrack_info ctinfo,
 			     unsigned char **data, TransportAddress *taddr,
 			     int idx, __be16 port,

include/linux/netfilter/nf_conntrack_irc.h

···
 
 #define IRC_PORT	6667
 
-extern unsigned int (*nf_nat_irc_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
 				       enum ip_conntrack_info ctinfo,
 				       unsigned int matchoff,
 				       unsigned int matchlen,

include/linux/netfilter/nf_conntrack_pptp.h

···
 struct nf_conntrack_expect;
 
 extern int
-(*nf_nat_pptp_hook_outbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
 			     struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			     struct PptpControlHeader *ctlh,
 			     union pptp_ctrl_union *pptpReq);
 
 extern int
-(*nf_nat_pptp_hook_inbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
 			    struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			    struct PptpControlHeader *ctlh,
 			    union pptp_ctrl_union *pptpReq);

include/linux/netfilter/nf_conntrack_sip.h

···
 	POS_SDP_HEADER,
 };
 
-extern unsigned int (*nf_nat_sip_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
 				       enum ip_conntrack_info ctinfo,
 				       struct nf_conn *ct,
 				       const char **dptr);
-extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
 				       enum ip_conntrack_info ctinfo,
 				       struct nf_conntrack_expect *exp,
 				       const char *dptr);

include/linux/netfilter/nf_conntrack_tftp.h

···
 #define TFTP_OPCODE_ACK		4
 #define TFTP_OPCODE_ERROR	5
 
-extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff **pskb,
+extern unsigned int (*nf_nat_tftp_hook)(struct sk_buff *skb,
 				        enum ip_conntrack_info ctinfo,
 				        struct nf_conntrack_expect *exp);
 

include/linux/netfilter/x_tables.h

···
 	/* Returns verdict. Argument order changed since 2.6.9, as this
 	   must now handle non-linear skbs, using skb_copy_bits and
 	   skb_ip_make_writable. */
-	unsigned int (*target)(struct sk_buff **pskb,
+	unsigned int (*target)(struct sk_buff *skb,
 			       const struct net_device *in,
 			       const struct net_device *out,
 			       unsigned int hooknum,

include/linux/netfilter_arp/arp_tables.h

···
 extern int arpt_register_table(struct arpt_table *table,
 			       const struct arpt_replace *repl);
 extern void arpt_unregister_table(struct arpt_table *table);
-extern unsigned int arpt_do_table(struct sk_buff **pskb,
+extern unsigned int arpt_do_table(struct sk_buff *skb,
 				  unsigned int hook,
 				  const struct net_device *in,
 				  const struct net_device *out,

include/linux/netfilter_bridge/ebtables.h

···
 	struct list_head list;
 	const char name[EBT_FUNCTION_MAXNAMELEN];
 	/* returns one of the standard verdicts */
-	int (*target)(struct sk_buff **pskb, unsigned int hooknr,
+	int (*target)(struct sk_buff *skb, unsigned int hooknr,
 	   const struct net_device *in, const struct net_device *out,
 	   const void *targetdata, unsigned int datalen);
 	/* 0 == let it in */
···
 extern void ebt_unregister_watcher(struct ebt_watcher *watcher);
 extern int ebt_register_target(struct ebt_target *target);
 extern void ebt_unregister_target(struct ebt_target *target);
-extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff **pskb,
+extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff *skb,
    const struct net_device *in, const struct net_device *out,
    struct ebt_table *table);
 

include/linux/netfilter_ipv4.h

···
 #define SO_ORIGINAL_DST 80
 
 #ifdef __KERNEL__
-extern int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type);
-extern int ip_xfrm_me_harder(struct sk_buff **pskb);
+extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type);
+extern int ip_xfrm_me_harder(struct sk_buff *skb);
 extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
 				   unsigned int dataoff, u_int8_t protocol);
 #endif /*__KERNEL__*/

include/linux/netfilter_ipv4/ip_tables.h

···
 	.target.errorname = "ERROR",					       \
 }
 
-extern unsigned int ipt_do_table(struct sk_buff **pskb,
+extern unsigned int ipt_do_table(struct sk_buff *skb,
 				 unsigned int hook,
 				 const struct net_device *in,
 				 const struct net_device *out,

include/linux/netfilter_ipv6/ip6_tables.h

···
 extern int ip6t_register_table(struct xt_table *table,
 			       const struct ip6t_replace *repl);
 extern void ip6t_unregister_table(struct xt_table *table);
-extern unsigned int ip6t_do_table(struct sk_buff **pskb,
+extern unsigned int ip6t_do_table(struct sk_buff *skb,
 				  unsigned int hook,
 				  const struct net_device *in,
 				  const struct net_device *out,

include/linux/skbuff.h

···
 }
 
 extern void	       kfree_skbmem(struct sk_buff *skb);
+extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);
 extern struct sk_buff *skb_clone(struct sk_buff *skb,
 				 gfp_t priority);
 extern struct sk_buff *skb_copy(const struct sk_buff *skb,

include/linux/tcp.h

···
  */
  	u32	snd_ssthresh;	/* Slow start size threshold		*/
  	u32	snd_cwnd;	/* Sending congestion window		*/
- 	u16	snd_cwnd_cnt;	/* Linear increase counter		*/
+	u32	snd_cwnd_cnt;	/* Linear increase counter		*/
 	u32	snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
 	u32	snd_cwnd_used;
 	u32	snd_cwnd_stamp;

include/net/inet_frag.h

···
+#ifndef __NET_FRAG_H__
+#define __NET_FRAG_H__
+
+struct inet_frag_queue {
+	struct hlist_node	list;
+	struct list_head	lru_list;   /* lru list member */
+	spinlock_t		lock;
+	atomic_t		refcnt;
+	struct timer_list	timer;      /* when will this queue expire? */
+	struct sk_buff		*fragments; /* list of received fragments */
+	ktime_t			stamp;
+	int			len;        /* total length of orig datagram */
+	int			meat;
+	__u8			last_in;    /* first/last segment arrived? */
+
+#define COMPLETE		4
+#define FIRST_IN		2
+#define LAST_IN			1
+};
+
+#define INETFRAGS_HASHSZ		64
+
+struct inet_frags_ctl {
+	int high_thresh;
+	int low_thresh;
+	int timeout;
+	int secret_interval;
+};
+
+struct inet_frags {
+	struct list_head	lru_list;
+	struct hlist_head	hash[INETFRAGS_HASHSZ];
+	rwlock_t		lock;
+	u32			rnd;
+	int			nqueues;
+	int			qsize;
+	atomic_t		mem;
+	struct timer_list	secret_timer;
+	struct inet_frags_ctl	*ctl;
+
+	unsigned int		(*hashfn)(struct inet_frag_queue *);
+	void			(*destructor)(struct inet_frag_queue *);
+	void			(*skb_free)(struct sk_buff *);
+};
+
+void inet_frags_init(struct inet_frags *);
+void inet_frags_fini(struct inet_frags *);
+
+void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
+void inet_frag_destroy(struct inet_frag_queue *q,
+				struct inet_frags *f, int *work);
+int inet_frag_evictor(struct inet_frags *f);
+
+static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
+{
+	if (atomic_dec_and_test(&q->refcnt))
+		inet_frag_destroy(q, f, NULL);
+}
+
+#endif

include/net/ip.h

···
 #define IP_INC_STATS(field)		SNMP_INC_STATS(ip_statistics, field)
 #define IP_INC_STATS_BH(field)		SNMP_INC_STATS_BH(ip_statistics, field)
 #define IP_INC_STATS_USER(field) 	SNMP_INC_STATS_USER(ip_statistics, field)
+#define IP_ADD_STATS_BH(field, val)	SNMP_ADD_STATS_BH(ip_statistics, field, val)
 DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
 #define NET_INC_STATS(field)		SNMP_INC_STATS(net_statistics, field)
 #define NET_INC_STATS_BH(field)		SNMP_INC_STATS_BH(net_statistics, field)
···
 extern int sysctl_ip_nonlocal_bind;
 
 /* From ip_fragment.c */
-extern int sysctl_ipfrag_high_thresh; 
-extern int sysctl_ipfrag_low_thresh;
-extern int sysctl_ipfrag_time;
-extern int sysctl_ipfrag_secret_interval;
+struct inet_frags_ctl;
+extern struct inet_frags_ctl ip4_frags_ctl;
 extern int sysctl_ipfrag_max_dist;
 
 /* From inetpeer.c */
···
 	IP_DEFRAG_VS_FWD
 };
 
-struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user);
-extern int ip_frag_nqueues;
-extern atomic_t ip_frag_mem;
+int ip_defrag(struct sk_buff *skb, u32 user);
+int ip_frag_mem(void);
+int ip_frag_nqueues(void);
 
 /*
  *	Functions provided by ip_forward.c

include/net/ip_vs.h

···
 			unsigned int proto_off,
 			int inverse);
 
-	int (*snat_handler)(struct sk_buff **pskb,
+	int (*snat_handler)(struct sk_buff *skb,
 			    struct ip_vs_protocol *pp, struct ip_vs_conn *cp);
 
-	int (*dnat_handler)(struct sk_buff **pskb,
+	int (*dnat_handler)(struct sk_buff *skb,
 			    struct ip_vs_protocol *pp, struct ip_vs_conn *cp);
 
 	int (*csum_check)(struct sk_buff *skb, struct ip_vs_protocol *pp);
···
 
 	/* output hook: return false if can't linearize. diff set for TCP.  */
 	int (*pkt_out)(struct ip_vs_app *, struct ip_vs_conn *,
-		       struct sk_buff **, int *diff);
+		       struct sk_buff *, int *diff);
 
 	/* input hook: return false if can't linearize. diff set for TCP. */
 	int (*pkt_in)(struct ip_vs_app *, struct ip_vs_conn *,
-		      struct sk_buff **, int *diff);
+		      struct sk_buff *, int *diff);
 
 	/* ip_vs_app initializer */
 	int (*init_conn)(struct ip_vs_app *, struct ip_vs_conn *);
···
 extern int ip_vs_app_inc_get(struct ip_vs_app *inc);
 extern void ip_vs_app_inc_put(struct ip_vs_app *inc);
 
-extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff **pskb);
-extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff **pskb);
+extern int ip_vs_app_pkt_out(struct ip_vs_conn *, struct sk_buff *skb);
+extern int ip_vs_app_pkt_in(struct ip_vs_conn *, struct sk_buff *skb);
 extern int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
 			     char *o_buf, int o_len, char *n_buf, int n_len);
 extern int ip_vs_app_init(void);
···
 	return fwd;
 }
 
-extern int ip_vs_make_skb_writable(struct sk_buff **pskb, int len);
 extern void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
 		struct ip_vs_conn *cp, int dir);
 

include/net/ipv6.h

···
 	SNMP_INC_STATS##modifier(statname##_statistics, (field));	\
 })
 
+#define _DEVADD(statname, modifier, idev, field, val)			\
+({									\
+	struct inet6_dev *_idev = (idev);				\
+	if (likely(_idev != NULL))					\
+		SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
+	SNMP_ADD_STATS##modifier(statname##_statistics, (field), (val));\
+})
+
 /* MIBs */
 DECLARE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
 
 #define IP6_INC_STATS(idev,field)	_DEVINC(ipv6, , idev, field)
 #define IP6_INC_STATS_BH(idev,field)	_DEVINC(ipv6, _BH, idev, field)
 #define IP6_INC_STATS_USER(idev,field)	_DEVINC(ipv6, _USER, idev, field)
+#define IP6_ADD_STATS_BH(idev,field,val) _DEVADD(ipv6, _BH, idev, field, val)
 
 DECLARE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
 DECLARE_SNMP_STAT(struct icmpv6msg_mib, icmpv6msg_statistics);
···
 					       void (*destructor)(struct sock *));
 
 
-extern int			ipv6_parse_hopopts(struct sk_buff **skbp);
+extern int			ipv6_parse_hopopts(struct sk_buff *skb);
 
 extern struct ipv6_txoptions *  ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
 extern struct ipv6_txoptions *	ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
···
 
 extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
 
-extern int ip6_frag_nqueues;
-extern atomic_t ip6_frag_mem;
+int ip6_frag_nqueues(void);
+int ip6_frag_mem(void);
 
 #define IPV6_FRAG_TIMEOUT	(60*HZ)		/* 60 seconds */
 
···
 /*
  * reassembly.c
  */
-extern int sysctl_ip6frag_high_thresh;
-extern int sysctl_ip6frag_low_thresh;
-extern int sysctl_ip6frag_time;
-extern int sysctl_ip6frag_secret_interval;
+struct inet_frags_ctl;
+extern struct inet_frags_ctl ip6_frags_ctl;
 
 extern const struct proto_ops inet6_stream_ops;
 extern const struct proto_ops inet6_dgram_ops;

include/net/netfilter/ipv6/nf_conntrack_ipv6.h

···
 			       struct net_device *out,
 			       int (*okfn)(struct sk_buff *));
 
-extern unsigned int nf_ct_frag6_timeout;
-extern unsigned int nf_ct_frag6_low_thresh;
-extern unsigned int nf_ct_frag6_high_thresh;
+struct inet_frags_ctl;
+extern struct inet_frags_ctl nf_frags_ctl;
 
 #endif /* _NF_CONNTRACK_IPV6_H*/

include/net/netfilter/nf_conntrack_core.h

···
    of connection tracking. */
 extern unsigned int nf_conntrack_in(int pf,
 				    unsigned int hooknum,
-				    struct sk_buff **pskb);
+				    struct sk_buff *skb);
 
 extern int nf_conntrack_init(void);
 extern void nf_conntrack_cleanup(void);
···
 extern struct nf_conntrack_tuple_hash *
 nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple);
 
-extern int __nf_conntrack_confirm(struct sk_buff **pskb);
+extern int __nf_conntrack_confirm(struct sk_buff *skb);
 
 /* Confirm a connection: returns NF_DROP if packet must be dropped. */
-static inline int nf_conntrack_confirm(struct sk_buff **pskb)
+static inline int nf_conntrack_confirm(struct sk_buff *skb)
 {
-	struct nf_conn *ct = (struct nf_conn *)(*pskb)->nfct;
+	struct nf_conn *ct = (struct nf_conn *)skb->nfct;
 	int ret = NF_ACCEPT;
 
 	if (ct) {
 		if (!nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
-			ret = __nf_conntrack_confirm(pskb);
+			ret = __nf_conntrack_confirm(skb);
 		nf_ct_deliver_cached_events(ct);
 	}
 	return ret;

include/net/netfilter/nf_conntrack_helper.h

···
 
 	/* Function to call when data passes; return verdict, or -1 to
            invalidate. */
-	int (*help)(struct sk_buff **pskb,
+	int (*help)(struct sk_buff *skb,
 		    unsigned int protoff,
 		    struct nf_conn *ct,
 		    enum ip_conntrack_info conntrackinfo);

include/net/netfilter/nf_nat_core.h

···
 extern unsigned int nf_nat_packet(struct nf_conn *ct,
 				  enum ip_conntrack_info ctinfo,
 				  unsigned int hooknum,
-				  struct sk_buff **pskb);
+				  struct sk_buff *skb);
 
 extern int nf_nat_icmp_reply_translation(struct nf_conn *ct,
 					 enum ip_conntrack_info ctinfo,
 					 unsigned int hooknum,
-					 struct sk_buff **pskb);
+					 struct sk_buff *skb);
 
 static inline int nf_nat_initialized(struct nf_conn *ct,
 				     enum nf_nat_manip_type manip)

include/net/netfilter/nf_nat_helper.h

···
 struct sk_buff;
 
 /* These return true or false. */
-extern int nf_nat_mangle_tcp_packet(struct sk_buff **skb,
+extern int nf_nat_mangle_tcp_packet(struct sk_buff *skb,
 				    struct nf_conn *ct,
 				    enum ip_conntrack_info ctinfo,
 				    unsigned int match_offset,
 				    unsigned int match_len,
 				    const char *rep_buffer,
 				    unsigned int rep_len);
-extern int nf_nat_mangle_udp_packet(struct sk_buff **skb,
+extern int nf_nat_mangle_udp_packet(struct sk_buff *skb,
 				    struct nf_conn *ct,
 				    enum ip_conntrack_info ctinfo,
 				    unsigned int match_offset,
 				    unsigned int match_len,
 				    const char *rep_buffer,
 				    unsigned int rep_len);
-extern int nf_nat_seq_adjust(struct sk_buff **pskb,
+extern int nf_nat_seq_adjust(struct sk_buff *skb,
 			     struct nf_conn *ct,
 			     enum ip_conntrack_info ctinfo);
 

include/net/netfilter/nf_nat_protocol.h

···
 
 	/* Translate a packet to the target according to manip type.
 	   Return true if succeeded. */
-	int (*manip_pkt)(struct sk_buff **pskb,
+	int (*manip_pkt)(struct sk_buff *skb,
 			 unsigned int iphdroff,
 			 const struct nf_conntrack_tuple *tuple,
 			 enum nf_nat_manip_type maniptype);

include/net/netfilter/nf_nat_rule.h

···
 
 extern int nf_nat_rule_init(void) __init;
 extern void nf_nat_rule_cleanup(void);
-extern int nf_nat_rule_find(struct sk_buff **pskb,
+extern int nf_nat_rule_find(struct sk_buff *skb,
 			    unsigned int hooknum,
 			    const struct net_device *in,
 			    const struct net_device *out,

include/net/protocol.h

···
 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 struct inet6_protocol 
 {
-	int	(*handler)(struct sk_buff **skb);
+	int	(*handler)(struct sk_buff *skb);
 
 	void	(*err_handler)(struct sk_buff *skb,
 			       struct inet6_skb_parm *opt,

include/net/xfrm.h

···
 extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family);
 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family);
 extern int xfrm6_rcv_spi(struct sk_buff *skb, __be32 spi);
-extern int xfrm6_rcv(struct sk_buff **pskb);
+extern int xfrm6_rcv(struct sk_buff *skb);
 extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
 			    xfrm_address_t *saddr, u8 proto);
 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family);

net/bridge/br.c

···
 
 #include "br_private.h"
 
-int (*br_should_route_hook) (struct sk_buff **pskb) = NULL;
+int (*br_should_route_hook)(struct sk_buff *skb);
 
 static struct llc_sap *br_stp_sap;
 

net/bridge/br_input.c

···
 	if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
 		goto drop;
 
+	skb = skb_share_check(skb, GFP_ATOMIC);
+	if (!skb)
+		return NULL;
+
 	if (unlikely(is_link_local(dest))) {
 		/* Pause frames shouldn't be passed up by driver anyway */
 		if (skb->protocol == htons(ETH_P_PAUSE))
···
 	case BR_STATE_FORWARDING:
 
 		if (br_should_route_hook) {
-			if (br_should_route_hook(&skb))
+			if (br_should_route_hook(skb))
 				return skb;
 			dest = eth_hdr(skb)->h_dest;
 		}

net/bridge/br_netfilter.c

···
  * receiving device) to make netfilter happy, the REDIRECT
  * target in particular.  Save the original destination IP
  * address to be able to detect DNAT afterwards. */
-static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb,
 				      const struct net_device *in,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
 	struct iphdr *iph;
-	struct sk_buff *skb = *pskb;
 	__u32 len = nf_bridge_encap_header_len(skb);
-
-	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
-		return NF_STOLEN;
 
 	if (unlikely(!pskb_may_pull(skb, len)))
 		goto out;
···
  * took place when the packet entered the bridge), but we
  * register an IPv4 PRE_ROUTING 'sabotage' hook that will
  * prevent this from happening. */
-static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff *skb,
 				   const struct net_device *in,
 				   const struct net_device *out,
 				   int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff *skb = *pskb;
-
 	if (skb->dst == (struct dst_entry *)&__fake_rtable) {
 		dst_release(skb->dst);
 		skb->dst = NULL;
···
  * but we are still able to filter on the 'real' indev/outdev
  * because of the physdev module. For ARP, indev and outdev are the
  * bridge ports. */
-static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb,
 				     const struct net_device *in,
 				     const struct net_device *out,
 				     int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff *skb = *pskb;
 	struct nf_bridge_info *nf_bridge;
 	struct net_device *parent;
 	int pf;
···
 	else
 		pf = PF_INET6;
 
-	nf_bridge_pull_encap_header(*pskb);
+	nf_bridge_pull_encap_header(skb);
 
 	nf_bridge = skb->nf_bridge;
 	if (skb->pkt_type == PACKET_OTHERHOST) {
···
 	return NF_STOLEN;
 }
 
-static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff *skb,
 				      const struct net_device *in,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff *skb = *pskb;
 	struct net_device **d = (struct net_device **)(skb->cb);
 
 #ifdef CONFIG_SYSCTL
···
 	if (skb->protocol != htons(ETH_P_ARP)) {
 		if (!IS_VLAN_ARP(skb))
 			return NF_ACCEPT;
-		nf_bridge_pull_encap_header(*pskb);
+		nf_bridge_pull_encap_header(skb);
 	}
 
 	if (arp_hdr(skb)->ar_pln != 4) {
 		if (IS_VLAN_ARP(skb))
-			nf_bridge_push_encap_header(*pskb);
+			nf_bridge_push_encap_header(skb);
 		return NF_ACCEPT;
 	}
 	*d = (struct net_device *)in;
···
  * NF_BR_PRI_FIRST, so no relevant PF_BRIDGE/INPUT functions have been nor
  * will be executed.
  */
-static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff *skb,
 				    const struct net_device *in,
 				    const struct net_device *out,
 				    int (*okfn)(struct sk_buff *))
 {
 	struct net_device *realindev;
-	struct sk_buff *skb = *pskb;
 	struct nf_bridge_info *nf_bridge;
 
 	if (!skb->nf_bridge)
···
 }
 
 /* PF_BRIDGE/POST_ROUTING ********************************************/
-static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
+static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
 				       const struct net_device *in,
 				       const struct net_device *out,
 				       int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff *skb = *pskb;
-	struct nf_bridge_info *nf_bridge = (*pskb)->nf_bridge;
+	struct nf_bridge_info *nf_bridge = skb->nf_bridge;
 	struct net_device *realoutdev = bridge_parent(skb->dev);
 	int pf;
 
···
 /* IP/SABOTAGE *****************************************************/
 /* Don't hand locally destined packets to PF_INET(6)/PRE_ROUTING
  * for the second time. */
-static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb,
+static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff *skb,
 				   const struct net_device *in,
 				   const struct net_device *out,
 				   int (*okfn)(struct sk_buff *))
 {
-	if ((*pskb)->nf_bridge &&
-	    !((*pskb)->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
+	if (skb->nf_bridge &&
+	    !(skb->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) {
 		return NF_STOP;
 	}
 

net/bridge/netfilter/ebt_arpreply.c

···
 #include <net/arp.h>
 #include <linux/module.h>
 
-static int ebt_target_reply(struct sk_buff **pskb, unsigned int hooknr,
+static int ebt_target_reply(struct sk_buff *skb, unsigned int hooknr,
    const struct net_device *in, const struct net_device *out,
    const void *data, unsigned int datalen)
 {
···
 	__be32 _sip, *siptr, _dip, *diptr;
 	struct arphdr _ah, *ap;
 	unsigned char _sha[ETH_ALEN], *shp;
-	struct sk_buff *skb = *pskb;
 
 	ap = skb_header_pointer(skb, 0, sizeof(_ah), &_ah);
 	if (ap == NULL)

net/bridge/netfilter/ebt_dnat.c

···
  *
  */
 
+#include <linux/netfilter.h>
 #include <linux/netfilter_bridge/ebtables.h>
 #include <linux/netfilter_bridge/ebt_nat.h>
 #include <linux/module.h>
 #include <net/sock.h>
 
-static int ebt_target_dnat(struct sk_buff **pskb, unsigned int hooknr,
+static int ebt_target_dnat(struct sk_buff *skb, unsigned int hooknr,
    const struct net_device *in, const struct net_device *out,
    const void *data, unsigned int datalen)
 {
 	struct ebt_nat_info *info = (struct ebt_nat_info *)data;
 
-	if (skb_shared(*pskb) || skb_cloned(*pskb)) {
-		struct sk_buff *nskb;
+	if (skb_make_writable(skb, 0))
+		return NF_DROP;
 
-		nskb = skb_copy(*pskb, GFP_ATOMIC);
-		if (!nskb)
-			return NF_DROP;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
-	memcpy(eth_hdr(*pskb)->h_dest, info->mac, ETH_ALEN);
+	memcpy(eth_hdr(skb)->h_dest, info->mac, ETH_ALEN);
 	return info->target;
 }
 

net/bridge/netfilter/ebt_mark.c

···
 #include <linux/netfilter_bridge/ebt_mark_t.h>
 #include <linux/module.h>
 
-static int ebt_target_mark(struct sk_buff **pskb, unsigned int hooknr,
+static int ebt_target_mark(struct sk_buff *skb, unsigned int hooknr,
    const struct net_device *in, const struct net_device *out,
    const void *data, unsigned int datalen)
 {
···
 	int action = info->target & -16;
 
 	if (action == MARK_SET_VALUE)
-		(*pskb)->mark = info->mark;
+		skb->mark = info->mark;
 	else if (action == MARK_OR_VALUE)
-		(*pskb)->mark |= info->mark;
+		skb->mark |= info->mark;
 	else if (action == MARK_AND_VALUE)
-		(*pskb)->mark &= info->mark;
+		skb->mark &= info->mark;
 	else
-		(*pskb)->mark ^= info->mark;
+		skb->mark ^= info->mark;
 
 	return info->target | ~EBT_VERDICT_BITS;
 }

net/bridge/netfilter/ebt_redirect.c

···
  *
  */
 
+#include <linux/netfilter.h>
 #include <linux/netfilter_bridge/ebtables.h>
 #include <linux/netfilter_bridge/ebt_redirect.h>
 #include <linux/module.h>
 #include <net/sock.h>
 #include "../br_private.h"
 
-static int ebt_target_redirect(struct sk_buff **pskb, unsigned int hooknr,
+static int ebt_target_redirect(struct sk_buff *skb, unsigned int hooknr,
    const struct net_device *in, const struct net_device *out,
    const void *data, unsigned int datalen)
 {
 	struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
 
-	if (skb_shared(*pskb) || skb_cloned(*pskb)) {
-		struct sk_buff *nskb;
+	if (skb_make_writable(skb, 0))
+		return NF_DROP;
 
-		nskb = skb_copy(*pskb, GFP_ATOMIC);
-		if (!nskb)
-			return NF_DROP;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
 	if (hooknr != NF_BR_BROUTING)
-		memcpy(eth_hdr(*pskb)->h_dest,
+		memcpy(eth_hdr(skb)->h_dest,
 		       in->br_port->br->dev->dev_addr, ETH_ALEN);
 	else
-		memcpy(eth_hdr(*pskb)->h_dest, in->dev_addr, ETH_ALEN);
-	(*pskb)->pkt_type = PACKET_HOST;
+		memcpy(eth_hdr(skb)->h_dest, in->dev_addr, ETH_ALEN);
+	skb->pkt_type = PACKET_HOST;
 	return info->target;
 }
 

net/bridge/netfilter/ebt_snat.c

···
  *
  */
 
+#include <linux/netfilter.h>
 #include <linux/netfilter_bridge/ebtables.h>
 #include <linux/netfilter_bridge/ebt_nat.h>
 #include <linux/module.h>
···
 #include <linux/if_arp.h>
 #include <net/arp.h>
 
-static int ebt_target_snat(struct sk_buff **pskb, unsigned int hooknr,
+static int ebt_target_snat(struct sk_buff *skb, unsigned int hooknr,
    const struct net_device *in, const struct net_device *out,
    const void *data, unsigned int datalen)
 {
 	struct ebt_nat_info *info = (struct ebt_nat_info *) data;
 
-	if (skb_shared(*pskb) || skb_cloned(*pskb)) {
-		struct sk_buff *nskb;
+	if (skb_make_writable(skb, 0))
+		return NF_DROP;
 
-		nskb = skb_copy(*pskb, GFP_ATOMIC);
-		if (!nskb)
-			return NF_DROP;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
-	memcpy(eth_hdr(*pskb)->h_source, info->mac, ETH_ALEN);
+	memcpy(eth_hdr(skb)->h_source, info->mac, ETH_ALEN);
 	if (!(info->target & NAT_ARP_BIT) &&
-	    eth_hdr(*pskb)->h_proto == htons(ETH_P_ARP)) {
+	    eth_hdr(skb)->h_proto == htons(ETH_P_ARP)) {
 		struct arphdr _ah, *ap;
 
-		ap = skb_header_pointer(*pskb, 0, sizeof(_ah), &_ah);
+		ap = skb_header_pointer(skb, 0, sizeof(_ah), &_ah);
 		if (ap == NULL)
 			return EBT_DROP;
 		if (ap->ar_hln != ETH_ALEN)
 			goto out;
-		if (skb_store_bits(*pskb, sizeof(_ah), info->mac,ETH_ALEN))
+		if (skb_store_bits(skb, sizeof(_ah), info->mac,ETH_ALEN))
 			return EBT_DROP;
 	}
 out:

net/bridge/netfilter/ebtable_broute.c

···
 	.me		= THIS_MODULE,
 };
 
-static int ebt_broute(struct sk_buff **pskb)
+static int ebt_broute(struct sk_buff *skb)
 {
 	int ret;
 
-	ret = ebt_do_table(NF_BR_BROUTING, pskb, (*pskb)->dev, NULL,
+	ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
 	   &broute_table);
 	if (ret == NF_DROP)
 		return 1; /* route it */

net/bridge/netfilter/ebtable_filter.c

···
 };
 
 static unsigned int
-ebt_hook (unsigned int hook, struct sk_buff **pskb, const struct net_device *in,
+ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
    const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, pskb, in, out, &frame_filter);
+	return ebt_do_table(hook, skb, in, out, &frame_filter);
 }
 
 static struct nf_hook_ops ebt_ops_filter[] = {

net/bridge/netfilter/ebtable_nat.c

···
 };
 
 static unsigned int
-ebt_nat_dst(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
+ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
    , const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, pskb, in, out, &frame_nat);
+	return ebt_do_table(hook, skb, in, out, &frame_nat);
 }
 
 static unsigned int
-ebt_nat_src(unsigned int hook, struct sk_buff **pskb, const struct net_device *in
+ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
    , const struct net_device *out, int (*okfn)(struct sk_buff *))
 {
-	return ebt_do_table(hook, pskb, in, out, &frame_nat);
+	return ebt_do_table(hook, skb, in, out, &frame_nat);
 }
 
 static struct nf_hook_ops ebt_ops_nat[] = {

net/bridge/netfilter/ebtables.c

···
 }
 
 /* Do some firewalling */
-unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb,
+unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
    const struct net_device *in, const struct net_device *out,
    struct ebt_table *table)
 {
···
 	base = private->entries;
 	i = 0;
 	while (i < nentries) {
-		if (ebt_basic_match(point, eth_hdr(*pskb), in, out))
+		if (ebt_basic_match(point, eth_hdr(skb), in, out))
 			goto letscontinue;
 
-		if (EBT_MATCH_ITERATE(point, ebt_do_match, *pskb, in, out) != 0)
+		if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, in, out) != 0)
 			goto letscontinue;
 
 		/* increase counter */
 		(*(counter_base + i)).pcnt++;
-		(*(counter_base + i)).bcnt+=(**pskb).len;
+		(*(counter_base + i)).bcnt += skb->len;
 
 		/* these should only watch: not modify, nor tell us
 		   what to do with the packet */
-		EBT_WATCHER_ITERATE(point, ebt_do_watcher, *pskb, hook, in,
+		EBT_WATCHER_ITERATE(point, ebt_do_watcher, skb, hook, in,
 		   out);
 
 		t = (struct ebt_entry_target *)
···
 		if (!t->u.target->target)
 			verdict = ((struct ebt_standard_target *)t)->verdict;
 		else
-			verdict = t->u.target->target(pskb, hook,
+			verdict = t->u.target->target(skb, hook,
 			   in, out, t->data, t->target_size);
 		if (verdict == EBT_ACCEPT) {
 			read_unlock_bh(&table->lock);

net/core/dev.c

···
 		goto out_set_summed;
 	}
 
-	if (skb_cloned(skb)) {
+	offset = skb->csum_start - skb_headroom(skb);
+	BUG_ON(offset >= skb_headlen(skb));
+	csum = skb_checksum(skb, offset, skb->len - offset, 0);
+
+	offset += skb->csum_offset;
+	BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
+
+	if (skb_cloned(skb) &&
+	    !skb_clone_writable(skb, offset + sizeof(__sum16))) {
 		ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
 		if (ret)
 			goto out;
 	}
 
-	offset = skb->csum_start - skb_headroom(skb);
-	BUG_ON(offset > (int)skb->len);
-	csum = skb_checksum(skb, offset, skb->len-offset, 0);
-
-	offset = skb_headlen(skb) - offset;
-	BUG_ON(offset <= 0);
-	BUG_ON(skb->csum_offset + 2 > offset);
-
-	*(__sum16 *)(skb->head + skb->csum_start + skb->csum_offset) =
-		csum_fold(csum);
+	*(__sum16 *)(skb->data + offset) = csum_fold(csum);
 out_set_summed:
 	skb->ip_summed = CHECKSUM_NONE;
 out:
···
 	struct Qdisc *q;
 	struct net_device *dev = skb->dev;
 	int result = TC_ACT_OK;
+	u32 ttl = G_TC_RTTL(skb->tc_verd);
 
-	if (dev->qdisc_ingress) {
-		__u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
-		if (MAX_RED_LOOP < ttl++) {
-			printk(KERN_WARNING "Redir loop detected Dropping packet (%d->%d)\n",
-				skb->iif, skb->dev->ifindex);
-			return TC_ACT_SHOT;
-		}
-
-		skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
-
-		skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
-
-		spin_lock(&dev->ingress_lock);
-		if ((q = dev->qdisc_ingress) != NULL)
-			result = q->enqueue(skb, q);
-		spin_unlock(&dev->ingress_lock);
-
+	if (MAX_RED_LOOP < ttl++) {
+		printk(KERN_WARNING
+		       "Redir loop detected Dropping packet (%d->%d)\n",
+		       skb->iif, dev->ifindex);
+		return TC_ACT_SHOT;
 	}
 
+	skb->tc_verd = SET_TC_RTTL(skb->tc_verd, ttl);
+	skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_INGRESS);
+
+	spin_lock(&dev->ingress_lock);
+	if ((q = dev->qdisc_ingress) != NULL)
+		result = q->enqueue(skb, q);
+	spin_unlock(&dev->ingress_lock);
+
 	return result;
+}
+
+static inline struct sk_buff *handle_ing(struct sk_buff *skb,
+					 struct packet_type **pt_prev,
+					 int *ret, struct net_device *orig_dev)
+{
+	if (!skb->dev->qdisc_ingress)
+		goto out;
+
+	if (*pt_prev) {
+		*ret = deliver_skb(skb, *pt_prev, orig_dev);
+		*pt_prev = NULL;
+	} else {
+		/* Huh? Why does turning on AF_PACKET affect this? */
+		skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
+	}
+
+	switch (ing_filter(skb)) {
+	case TC_ACT_SHOT:
+	case TC_ACT_STOLEN:
+		kfree_skb(skb);
+		return NULL;
+	}
+
+out:
+	skb->tc_verd = 0;
+	return skb;
 }
 #endif
 
···
 	}
 
 #ifdef CONFIG_NET_CLS_ACT
-	if (pt_prev) {
-		ret = deliver_skb(skb, pt_prev, orig_dev);
-		pt_prev = NULL; /* noone else should process this after*/
-	} else {
-		skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
-	}
-
-	ret = ing_filter(skb);
-
-	if (ret == TC_ACT_SHOT || (ret == TC_ACT_STOLEN)) {
-		kfree_skb(skb);
+	skb = handle_ing(skb, &pt_prev, &ret, orig_dev);
+	if (!skb)
 		goto out;
-	}
-
-	skb->tc_verd = 0;
 ncls:
 #endif
 

net/core/neighbour.c

···
 	if (!creat)
 		goto out;
 
+	ASSERT_RTNL();
+
 	n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
 	if (!n)
 		goto out;

net/core/skbuff.c

···
 	__kfree_skb(skb);
 }
 
+static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
+{
+	new->tstamp		= old->tstamp;
+	new->dev		= old->dev;
+	new->transport_header	= old->transport_header;
+	new->network_header	= old->network_header;
+	new->mac_header		= old->mac_header;
+	new->dst		= dst_clone(old->dst);
+#ifdef CONFIG_INET
+	new->sp			= secpath_get(old->sp);
+#endif
+	memcpy(new->cb, old->cb, sizeof(old->cb));
+	new->csum_start		= old->csum_start;
+	new->csum_offset	= old->csum_offset;
+	new->local_df		= old->local_df;
+	new->pkt_type		= old->pkt_type;
+	new->ip_summed		= old->ip_summed;
+	skb_copy_queue_mapping(new, old);
+	new->priority		= old->priority;
+#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
+	new->ipvs_property	= old->ipvs_property;
+#endif
+	new->protocol		= old->protocol;
+	new->mark		= old->mark;
+	__nf_copy(new, old);
+#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
+    defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
+	new->nf_trace		= old->nf_trace;
+#endif
+#ifdef CONFIG_NET_SCHED
+	new->tc_index		= old->tc_index;
+#ifdef CONFIG_NET_CLS_ACT
+	new->tc_verd		= old->tc_verd;
+#endif
+#endif
+	skb_copy_secmark(new, old);
+}
+
+static struct sk_buff *__skb_clone(struct sk_buff *n, struct sk_buff *skb)
+{
+#define C(x) n->x = skb->x
+
+	n->next = n->prev = NULL;
+	n->sk = NULL;
+	__copy_skb_header(n, skb);
+
+	C(len);
+	C(data_len);
+	C(mac_len);
+	n->cloned = 1;
+	n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
+	n->nohdr = 0;
+	n->destructor = NULL;
+#ifdef CONFIG_NET_CLS_ACT
+	/* FIXME What is this and why don't we do it in copy_skb_header? */
+	n->tc_verd = SET_TC_VERD(n->tc_verd,0);
+	n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd);
+	n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
+	C(iif);
+#endif
+	C(truesize);
+	atomic_set(&n->users, 1);
+	C(head);
+	C(data);
+	C(tail);
+	C(end);
+
+	atomic_inc(&(skb_shinfo(skb)->dataref));
+	skb->cloned = 1;
+
+	return n;
+#undef C
+}
+
+/**
+ *	skb_morph	-	morph one skb into another
+ *	@dst: the skb to receive the contents
+ *	@src: the skb to supply the contents
+ *
+ *	This is identical to skb_clone except that the target skb is
+ *	supplied by the user.
+ *
+ *	The target skb is returned upon exit.
+ */
+struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src)
+{
+	skb_release_data(dst);
+	return __skb_clone(dst, src);
+}
+EXPORT_SYMBOL_GPL(skb_morph);
+
 /**
  *	skb_clone	-	duplicate an sk_buff
  *	@skb: buffer to clone
···
 		n->fclone = SKB_FCLONE_UNAVAILABLE;
 	}
 
-#define C(x) n->x = skb->x
-
-	n->next = n->prev = NULL;
-	n->sk = NULL;
-	C(tstamp);
-	C(dev);
-	C(transport_header);
-	C(network_header);
-	C(mac_header);
-	C(dst);
-	dst_clone(skb->dst);
-	C(sp);
-#ifdef CONFIG_INET
-	secpath_get(skb->sp);
-#endif
-	memcpy(n->cb, skb->cb, sizeof(skb->cb));
-	C(len);
-	C(data_len);
-	C(mac_len);
-	C(csum);
-	C(local_df);
-	n->cloned = 1;
-	n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
-	n->nohdr = 0;
-	C(pkt_type);
-	C(ip_summed);
-	skb_copy_queue_mapping(n, skb);
-	C(priority);
-#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
-	C(ipvs_property);
-#endif
-	C(protocol);
-	n->destructor = NULL;
-	C(mark);
-	__nf_copy(n, skb);
-#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
-    defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
-	C(nf_trace);
-#endif
-#ifdef CONFIG_NET_SCHED
-	C(tc_index);
-#ifdef CONFIG_NET_CLS_ACT
-	n->tc_verd = SET_TC_VERD(skb->tc_verd,0);
-	n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd);
-	n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
-	C(iif);
-#endif
-#endif
-	skb_copy_secmark(n, skb);
-	C(truesize);
-	atomic_set(&n->users, 1);
-	C(head);
-	C(data);
-	C(tail);
-	C(end);
-
-	atomic_inc(&(skb_shinfo(skb)->dataref));
-	skb->cloned = 1;
-
-	return n;
+	return __skb_clone(n, skb);
 }
 
 static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
···
 	 */
 	unsigned long offset = new->data - old->data;
 #endif
-	new->sk		= NULL;
-	new->dev	= old->dev;
-	skb_copy_queue_mapping(new, old);
-	new->priority	= old->priority;
-	new->protocol	= old->protocol;
-	new->dst	= dst_clone(old->dst);
-#ifdef CONFIG_INET
-	new->sp		= secpath_get(old->sp);
-#endif
-	new->csum_start = old->csum_start;
-	new->csum_offset = old->csum_offset;
-	new->ip_summed = old->ip_summed;
-	new->transport_header = old->transport_header;
-	new->network_header   = old->network_header;
-	new->mac_header	      = old->mac_header;
+
+	__copy_skb_header(new, old);
+
 #ifndef NET_SKBUFF_DATA_USES_OFFSET
 	/* {transport,network,mac}_header are relative to skb->head */
 	new->transport_header += offset;
 	new->network_header   += offset;
 	new->mac_header	      += offset;
 #endif
-	memcpy(new->cb, old->cb, sizeof(old->cb));
-	new->local_df	= old->local_df;
-	new->fclone	= SKB_FCLONE_UNAVAILABLE;
-	new->pkt_type	= old->pkt_type;
-	new->tstamp	= old->tstamp;
-	new->destructor = NULL;
-	new->mark	= old->mark;
-	__nf_copy(new, old);
-#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
-    defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
-	new->nf_trace	= old->nf_trace;
-#endif
-#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
-	new->ipvs_property = old->ipvs_property;
-#endif
-#ifdef CONFIG_NET_SCHED
-#ifdef CONFIG_NET_CLS_ACT
-	new->tc_verd = old->tc_verd;
-#endif
-	new->tc_index	= old->tc_index;
-#endif
-	skb_copy_secmark(new, old);
-	atomic_set(&new->users, 1);
 	skb_shinfo(new)->gso_size = skb_shinfo(old)->gso_size;
 	skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs;
 	skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type;
···
 	skb->transport_header += off;
 	skb->network_header   += off;
 	skb->mac_header	      += off;
-	skb->csum_start       += off;
+	skb->csum_start       += nhead;
 	skb->cloned   = 0;
 	skb->hdr_len  = 0;
 	skb->nohdr    = 0;

net/dccp/ipv6.c

···
 	return 0;
 }
 
-static int dccp_v6_rcv(struct sk_buff **pskb)
+static int dccp_v6_rcv(struct sk_buff *skb)
 {
 	const struct dccp_hdr *dh;
-	struct sk_buff *skb = *pskb;
 	struct sock *sk;
 	int min_cov;
 

net/decnet/netfilter/dn_rtmsg.c

···
 
 
 static unsigned int dnrmg_hook(unsigned int hook,
-			struct sk_buff **pskb,
+			struct sk_buff *skb,
 			const struct net_device *in,
 			const struct net_device *out,
 			int (*okfn)(struct sk_buff *))
 {
-	dnrmg_send_peer(*pskb);
+	dnrmg_send_peer(skb);
 	return NF_ACCEPT;
 }
 

net/ipv4/Makefile

···
 	     tcp_minisocks.o tcp_cong.o \
 	     datagram.o raw.o udp.o udplite.o \
 	     arp.o icmp.o devinet.o af_inet.o  igmp.o \
-	     sysctl_net_ipv4.o fib_frontend.o fib_semantics.o
+	     sysctl_net_ipv4.o fib_frontend.o fib_semantics.o \
+	     inet_fragment.o
 
 obj-$(CONFIG_IP_FIB_HASH) += fib_hash.o
 obj-$(CONFIG_IP_FIB_TRIE) += fib_trie.o

net/ipv4/inet_fragment.c

···
+/*
+ * inet fragments management
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * 		Authors:	Pavel Emelyanov <[e-mail]>
+ *				Started as consolidation of ipv4/ip_fragment.c,
+ *				ipv6/reassembly. and ipv6 nf conntrack reassembly
+ */
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/random.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+
+#include <net/inet_frag.h>
+
+static void inet_frag_secret_rebuild(unsigned long dummy)
+{
+	struct inet_frags *f = (struct inet_frags *)dummy;
+	unsigned long now = jiffies;
+	int i;
+
+	write_lock(&f->lock);
+	get_random_bytes(&f->rnd, sizeof(u32));
+	for (i = 0; i < INETFRAGS_HASHSZ; i++) {
+		struct inet_frag_queue *q;
+		struct hlist_node *p, *n;
+
+		hlist_for_each_entry_safe(q, p, n, &f->hash[i], list) {
+			unsigned int hval = f->hashfn(q);
+
+			if (hval != i) {
+				hlist_del(&q->list);
+
+				/* Relink to new hash chain. */
+				hlist_add_head(&q->list, &f->hash[hval]);
+			}
+		}
+	}
+	write_unlock(&f->lock);
+
+	mod_timer(&f->secret_timer, now + f->ctl->secret_interval);
+}
+
+void inet_frags_init(struct inet_frags *f)
+{
+	int i;
+
+	for (i = 0; i < INETFRAGS_HASHSZ; i++)
+		INIT_HLIST_HEAD(&f->hash[i]);
+
+	INIT_LIST_HEAD(&f->lru_list);
+	rwlock_init(&f->lock);
+
+	f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
+				   (jiffies ^ (jiffies >> 6)));
+
+	f->nqueues = 0;
+	atomic_set(&f->mem, 0);
+
+	init_timer(&f->secret_timer);
+	f->secret_timer.function = inet_frag_secret_rebuild;
+	f->secret_timer.data = (unsigned long)f;
+	f->secret_timer.expires = jiffies + f->ctl->secret_interval;
+	add_timer(&f->secret_timer);
+}
+EXPORT_SYMBOL(inet_frags_init);
+
+void inet_frags_fini(struct inet_frags *f)
+{
+	del_timer(&f->secret_timer);
+}
+EXPORT_SYMBOL(inet_frags_fini);
+
+static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
+{
+	write_lock(&f->lock);
+	hlist_del(&fq->list);
+	list_del(&fq->lru_list);
+	f->nqueues--;
+	write_unlock(&f->lock);
+}
+
+void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f)
+{
+	if (del_timer(&fq->timer))
+		atomic_dec(&fq->refcnt);
+
+	if (!(fq->last_in & COMPLETE)) {
+		fq_unlink(fq, f);
+		atomic_dec(&fq->refcnt);
+		fq->last_in |= COMPLETE;
+	}
+}
+
+EXPORT_SYMBOL(inet_frag_kill);
+
+static inline void frag_kfree_skb(struct inet_frags *f, struct sk_buff *skb,
+						int *work)
+{
+	if (work)
+		*work -= skb->truesize;
+
+	atomic_sub(skb->truesize, &f->mem);
+	if (f->skb_free)
+		f->skb_free(skb);
+	kfree_skb(skb);
+}
+
+void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f,
+					int *work)
+{
+	struct sk_buff *fp;
+
+	BUG_TRAP(q->last_in & COMPLETE);
+	BUG_TRAP(del_timer(&q->timer) == 0);
+
+	/* Release all fragment data. */
+	fp = q->fragments;
+	while (fp) {
+		struct sk_buff *xp = fp->next;
+
+		frag_kfree_skb(f, fp, work);
+		fp = xp;
+	}
+
+	if (work)
+		*work -= f->qsize;
+	atomic_sub(f->qsize, &f->mem);
+
+	f->destructor(q);
+
+}
+EXPORT_SYMBOL(inet_frag_destroy);
+
+int inet_frag_evictor(struct inet_frags *f)
+{
+	struct inet_frag_queue *q;
+	int work, evicted = 0;
+
+	work = atomic_read(&f->mem) - f->ctl->low_thresh;
+	while (work > 0) {
+		read_lock(&f->lock);
+		if (list_empty(&f->lru_list)) {
+			read_unlock(&f->lock);
+			break;
+		}
+
+		q = list_first_entry(&f->lru_list,
+				struct inet_frag_queue, lru_list);
+		atomic_inc(&q->refcnt);
+		read_unlock(&f->lock);
+
+		spin_lock(&q->lock);
+		if (!(q->last_in & COMPLETE))
+			inet_frag_kill(q, f);
+		spin_unlock(&q->lock);
+
+		if (atomic_dec_and_test(&q->refcnt))
+			inet_frag_destroy(q, f, &work);
+		evicted++;
+	}
+
+	return evicted;
+}
+EXPORT_SYMBOL(inet_frag_evictor);

net/ipv4/ip_forward.c

···
 #include <net/route.h>
 #include <net/xfrm.h>
 
-static inline int ip_forward_finish(struct sk_buff *skb)
+static int ip_forward_finish(struct sk_buff *skb)
 {
 	struct ip_options * opt	= &(IPCB(skb)->opt);
 

net/ipv4/ip_fragment.c

···
 #include <net/icmp.h>
 #include <net/checksum.h>
 #include <net/inetpeer.h>
+#include <net/inet_frag.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
 #include <linux/inet.h>
···
  * as well. Or notify me, at least. --ANK
  */
 
-/* Fragment cache limits. We will commit 256K at one time. Should we
- * cross that limit we will prune down to 192K. This should cope with
- * even the most extreme cases without allowing an attacker to measurably
- * harm machine performance.
- */
-int sysctl_ipfrag_high_thresh __read_mostly = 256*1024;
-int sysctl_ipfrag_low_thresh __read_mostly = 192*1024;
-
 int sysctl_ipfrag_max_dist __read_mostly = 64;
-
-/* Important NOTE! Fragment queue must be destroyed before MSL expires.
- * RFC791 is wrong proposing to prolongate timer each fragment arrival by TTL.
- */
-int sysctl_ipfrag_time __read_mostly = IP_FRAG_TIME;
 
 struct ipfrag_skb_cb
 {
···
 
 /* Describe an entry in the "incomplete datagrams" queue. */
 struct ipq {
-	struct hlist_node list;
-	struct list_head lru_list;	/* lru list member 			*/
+	struct inet_frag_queue q;
+
 	u32		user;
 	__be32		saddr;
 	__be32		daddr;
 	__be16		id;
 	u8		protocol;
-	u8		last_in;
-#define COMPLETE		4
-#define FIRST_IN		2
-#define LAST_IN			1
-
-	struct sk_buff	*fragments;	/* linked list of received fragments	*/
-	int		len;		/* total length of original datagram	*/
-	int		meat;
-	spinlock_t	lock;
-	atomic_t	refcnt;
-	struct timer_list timer;	/* when will this queue expire?		*/
-	ktime_t		stamp;
 	int             iif;
 	unsigned int    rid;
 	struct inet_peer *peer;
 };
 
-/* Hash table. */
+struct inet_frags_ctl ip4_frags_ctl __read_mostly = {
+	/*
+	 * Fragment cache limits. We will commit 256K at one time. Should we
+	 * cross that limit we will prune down to 192K. This should cope with
+	 * even the most extreme cases without allowing an attacker to
+	 * measurably harm machine performance.
+	 */
+	.high_thresh	 = 256 * 1024,
+	.low_thresh	 = 192 * 1024,
 
-#define IPQ_HASHSZ	64
+	/*
+	 * Important NOTE! Fragment queue must be destroyed before MSL expires.
+	 * RFC791 is wrong proposing to prolongate timer each fragment arrival
+	 * by TTL.
+	 */
+	.timeout	 = IP_FRAG_TIME,
+	.secret_interval = 10 * 60 * HZ,
+};
 
-/* Per-bucket lock is easy to add now. */
-static struct hlist_head ipq_hash[IPQ_HASHSZ];
-static DEFINE_RWLOCK(ipfrag_lock);
-static u32 ipfrag_hash_rnd;
-static LIST_HEAD(ipq_lru_list);
-int ip_frag_nqueues = 0;
+static struct inet_frags ip4_frags;
 
-static __inline__ void __ipq_unlink(struct ipq *qp)
+int ip_frag_nqueues(void)
 {
-	hlist_del(&qp->list);
-	list_del(&qp->lru_list);
-	ip_frag_nqueues--;
+	return ip4_frags.nqueues;
 }
 
-static __inline__ void ipq_unlink(struct ipq *ipq)
+int ip_frag_mem(void)
 {
-	write_lock(&ipfrag_lock);
-	__ipq_unlink(ipq);
-	write_unlock(&ipfrag_lock);
+	return atomic_read(&ip4_frags.mem);
 }
+
+static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
+			 struct net_device *dev);
 
 static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot)
 {
 	return jhash_3words((__force u32)id << 16 | prot,
 			    (__force u32)saddr, (__force u32)daddr,
-			    ipfrag_hash_rnd) & (IPQ_HASHSZ - 1);
+			    ip4_frags.rnd) & (INETFRAGS_HASHSZ - 1);
 }
 
-static struct timer_list ipfrag_secret_timer;
-int sysctl_ipfrag_secret_interval __read_mostly = 10 * 60 * HZ;
-
-static void ipfrag_secret_rebuild(unsigned long dummy)
+static unsigned int ip4_hashfn(struct inet_frag_queue *q)
 {
-	unsigned long now = jiffies;
-	int i;
+	struct ipq *ipq;
 
-	write_lock(&ipfrag_lock);
-	get_random_bytes(&ipfrag_hash_rnd, sizeof(u32));
-	for (i = 0; i < IPQ_HASHSZ; i++) {
-		struct ipq *q;
-		struct hlist_node *p, *n;
-
-		hlist_for_each_entry_safe(q, p, n, &ipq_hash[i], list) {
-			unsigned int hval = ipqhashfn(q->id, q->saddr,
-						      q->daddr, q->protocol);
-
-			if (hval != i) {
-				hlist_del(&q->list);
-
-				/* Relink to new hash chain. */
-				hlist_add_head(&q->list, &ipq_hash[hval]);
-			}
-		}
-	}
-	write_unlock(&ipfrag_lock);
-
-	mod_timer(&ipfrag_secret_timer, now + sysctl_ipfrag_secret_interval);
+	ipq = container_of(q, struct ipq, q);
+	return ipqhashfn(ipq->id, ipq->saddr, ipq->daddr, ipq->protocol);
 }
-
-atomic_t ip_frag_mem = ATOMIC_INIT(0);	/* Memory used for fragments */
 
 /* Memory Tracking Functions. */
 static __inline__ void frag_kfree_skb(struct sk_buff *skb, int *work)
 {
 	if (work)
 		*work -= skb->truesize;
-	atomic_sub(skb->truesize, &ip_frag_mem);
+	atomic_sub(skb->truesize, &ip4_frags.mem);
 	kfree_skb(skb);
 }
 
-static __inline__ void frag_free_queue(struct ipq *qp, int *work)
+static __inline__ void ip4_frag_free(struct inet_frag_queue *q)
 {
-	if (work)
-		*work -= sizeof(struct ipq);
-	atomic_sub(sizeof(struct ipq), &ip_frag_mem);
+	struct ipq *qp;
+
+	qp = container_of(q, struct ipq, q);
+	if (qp->peer)
+		inet_putpeer(qp->peer);
 	kfree(qp);
 }
 
 static __inline__ struct ipq *frag_alloc_queue(void)
 {
-	struct ipq *qp = kmalloc(sizeof(struct ipq), GFP_ATOMIC);
+	struct ipq *qp = kzalloc(sizeof(struct ipq), GFP_ATOMIC);
 
 	if (!qp)
 		return NULL;
-	atomic_add(sizeof(struct ipq), &ip_frag_mem);
+	atomic_add(sizeof(struct ipq), &ip4_frags.mem);
 	return qp;
 }
 
 
 /* Destruction primitives. */
 
-/* Complete destruction of ipq. */
-static void ip_frag_destroy(struct ipq *qp, int *work)
+static __inline__ void ipq_put(struct ipq *ipq)
 {
-	struct sk_buff *fp;
-
-	BUG_TRAP(qp->last_in&COMPLETE);
-	BUG_TRAP(del_timer(&qp->timer) == 0);
-
-	if (qp->peer)
-		inet_putpeer(qp->peer);
-
-	/* Release all fragment data. */
-	fp = qp->fragments;
-	while (fp) {
-		struct sk_buff *xp = fp->next;
-
-		frag_kfree_skb(fp, work);
-		fp = xp;
-	}
-
-	/* Finally, release the queue descriptor itself. */
-	frag_free_queue(qp, work);
-}
-
-static __inline__ void ipq_put(struct ipq *ipq, int *work)
-{
-	if (atomic_dec_and_test(&ipq->refcnt))
-		ip_frag_destroy(ipq, work);
+	inet_frag_put(&ipq->q, &ip4_frags);
 }
 
 /* Kill ipq entry. It is not destroyed immediately,
···
  */
 static void ipq_kill(struct ipq *ipq)
 {
-	if (del_timer(&ipq->timer))
-		atomic_dec(&ipq->refcnt);
-
-	if (!(ipq->last_in & COMPLETE)) {
-		ipq_unlink(ipq);
-		atomic_dec(&ipq->refcnt);
-		ipq->last_in |= COMPLETE;
-	}
+	inet_frag_kill(&ipq->q, &ip4_frags);
 }
 
 /* Memory limiting on fragments.  Evictor trashes the oldest
···
  */
 static void ip_evictor(void)
 {
-	struct ipq *qp;
-	struct list_head *tmp;
-	int work;
+	int evicted;
 
-	work = atomic_read(&ip_frag_mem) - sysctl_ipfrag_low_thresh;
-	if (work <= 0)
-		return;
-
-	while (work > 0) {
-		read_lock(&ipfrag_lock);
-		if (list_empty(&ipq_lru_list)) {
-			read_unlock(&ipfrag_lock);
-			return;
-		}
-		tmp = ipq_lru_list.next;
-		qp = list_entry(tmp, struct ipq, lru_list);
-		atomic_inc(&qp->refcnt);
-		read_unlock(&ipfrag_lock);
-
-		spin_lock(&qp->lock);
-		if (!(qp->last_in&COMPLETE))
-			ipq_kill(qp);
-		spin_unlock(&qp->lock);
-
-		ipq_put(qp, &work);
-		IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
-	}
+	evicted = inet_frag_evictor(&ip4_frags);
+	if (evicted)
+		IP_ADD_STATS_BH(IPSTATS_MIB_REASMFAILS, evicted);
 }
 
 /*
···
 {
 	struct ipq *qp = (struct ipq *) arg;
 
-	spin_lock(&qp->lock);
+	spin_lock(&qp->q.lock);
 
-	if (qp->last_in & COMPLETE)
+	if (qp->q.last_in & COMPLETE)
 		goto out;
 
 	ipq_kill(qp);
···
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMTIMEOUT);
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
 
-	if ((qp->last_in&FIRST_IN) && qp->fragments != NULL) {
-		struct sk_buff *head = qp->fragments;
+	if ((qp->q.last_in&FIRST_IN) && qp->q.fragments != NULL) {
+		struct sk_buff *head = qp->q.fragments;
 		/* Send an ICMP "Fragment Reassembly Timeout" message. */
 		if ((head->dev = dev_get_by_index(&init_net, qp->iif)) != NULL) {
 			icmp_send(head, ICMP_TIME_EXCEEDED, ICMP_EXC_FRAGTIME, 0);
···
 		}
 	}
 out:
-	spin_unlock(&qp->lock);
-	ipq_put(qp, NULL);
+	spin_unlock(&qp->q.lock);
+	ipq_put(qp);
 }
 
 /* Creation primitives. */
···
 #endif
 	unsigned int hash;
 
-	write_lock(&ipfrag_lock);
+	write_lock(&ip4_frags.lock);
 	hash = ipqhashfn(qp_in->id, qp_in->saddr, qp_in->daddr,
 			 qp_in->protocol);
 #ifdef CONFIG_SMP
···
 	 * such entry could be created on other cpu, while we
 	 * promoted read lock to write lock.
 	 */
-	hlist_for_each_entry(qp, n, &ipq_hash[hash], list) {
+	hlist_for_each_entry(qp, n, &ip4_frags.hash[hash], q.list) {
 		if (qp->id == qp_in->id		&&
 		    qp->saddr == qp_in->saddr	&&
 		    qp->daddr == qp_in->daddr	&&
 		    qp->protocol == qp_in->protocol &&
 		    qp->user == qp_in->user) {
-			atomic_inc(&qp->refcnt);
-			write_unlock(&ipfrag_lock);
-			qp_in->last_in |= COMPLETE;
-			ipq_put(qp_in, NULL);
+			atomic_inc(&qp->q.refcnt);
+			write_unlock(&ip4_frags.lock);
+			qp_in->q.last_in |= COMPLETE;
+			ipq_put(qp_in);
 			return qp;
 		}
 	}
 #endif
 	qp = qp_in;
 
-	if (!mod_timer(&qp->timer, jiffies + sysctl_ipfrag_time))
-		atomic_inc(&qp->refcnt);
+	if (!mod_timer(&qp->q.timer, jiffies + ip4_frags_ctl.timeout))
+		atomic_inc(&qp->q.refcnt);
 
-	atomic_inc(&qp->refcnt);
-	hlist_add_head(&qp->list, &ipq_hash[hash]);
-	INIT_LIST_HEAD(&qp->lru_list);
-	list_add_tail(&qp->lru_list, &ipq_lru_list);
-	ip_frag_nqueues++;
-	write_unlock(&ipfrag_lock);
+	atomic_inc(&qp->q.refcnt);
+	hlist_add_head(&qp->q.list, &ip4_frags.hash[hash]);
+	INIT_LIST_HEAD(&qp->q.lru_list);
+	list_add_tail(&qp->q.lru_list, &ip4_frags.lru_list);
+	ip4_frags.nqueues++;
+	write_unlock(&ip4_frags.lock);
 	return qp;
 }
 
···
 		goto out_nomem;
 
 	qp->protocol = iph->protocol;
-	qp->last_in = 0;
 	qp->id = iph->id;
 	qp->saddr = iph->saddr;
 	qp->daddr = iph->daddr;
 	qp->user = user;
-	qp->len = 0;
-	qp->meat = 0;
-	qp->fragments = NULL;
-	qp->iif = 0;
 	qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL;
 
 	/* Initialize a timer for this entry. */
-	init_timer(&qp->timer);
-	qp->timer.data = (unsigned long) qp;	/* pointer to queue	*/
-	qp->timer.function = ip_expire;		/* expire function	*/
-	spin_lock_init(&qp->lock);
-	atomic_set(&qp->refcnt, 1);
+	init_timer(&qp->q.timer);
+	qp->q.timer.data = (unsigned long) qp;	/* pointer to queue	*/
+	qp->q.timer.function = ip_expire;		/* expire function	*/
+	spin_lock_init(&qp->q.lock);
+	atomic_set(&qp->q.refcnt, 1);
 
 	return ip_frag_intern(qp);
 
···
 	struct ipq *qp;
 	struct hlist_node *n;
 
-	read_lock(&ipfrag_lock);
+	read_lock(&ip4_frags.lock);
 	hash = ipqhashfn(id, saddr, daddr, protocol);
-	hlist_for_each_entry(qp, n, &ipq_hash[hash], list) {
+	hlist_for_each_entry(qp, n, &ip4_frags.hash[hash], q.list) {
 		if (qp->id == id		&&
 		    qp->saddr == saddr	&&
 		    qp->daddr == daddr	&&
 		    qp->protocol == protocol &&
 		    qp->user == user) {
-			atomic_inc(&qp->refcnt);
-			read_unlock(&ipfrag_lock);
+			atomic_inc(&qp->q.refcnt);
+			read_unlock(&ip4_frags.lock);
 			return qp;
 		}
 	}
-	read_unlock(&ipfrag_lock);
+	read_unlock(&ip4_frags.lock);
 
 	return ip_frag_create(iph, user);
 }
···
 	end = atomic_inc_return(&peer->rid);
 	qp->rid = end;
 
-	rc = qp->fragments && (end - start) > max;
+	rc = qp->q.fragments && (end - start) > max;
 
 	if (rc) {
 		IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
···
 {
 	struct sk_buff *fp;
 
-	if (!mod_timer(&qp->timer, jiffies + sysctl_ipfrag_time)) {
-		atomic_inc(&qp->refcnt);
+	if (!mod_timer(&qp->q.timer, jiffies + ip4_frags_ctl.timeout)) {
+		atomic_inc(&qp->q.refcnt);
 		return -ETIMEDOUT;
 	}
 
-	fp = qp->fragments;
+	fp = qp->q.fragments;
 	do {
 		struct sk_buff *xp = fp->next;
 		frag_kfree_skb(fp, NULL);
 		fp = xp;
 	} while (fp);
 
-	qp->last_in = 0;
-	qp->len = 0;
-	qp->meat = 0;
-	qp->fragments = NULL;
+	qp->q.last_in = 0;
+	qp->q.len = 0;
+	qp->q.meat = 0;
+	qp->q.fragments = NULL;
 	qp->iif = 0;
 
 	return 0;
 }
 
 /* Add new segment to existing queue. */
-static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
+static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
 {
 	struct sk_buff *prev, *next;
+	struct net_device *dev;
 	int flags, offset;
 	int ihl, end;
+	int err = -ENOENT;
 
-	if (qp->last_in & COMPLETE)
+	if (qp->q.last_in & COMPLETE)
 		goto err;
 
 	if (!(IPCB(skb)->flags & IPSKB_FRAG_COMPLETE) &&
-	    unlikely(ip_frag_too_far(qp)) && unlikely(ip_frag_reinit(qp))) {
+	    unlikely(ip_frag_too_far(qp)) &&
+	    unlikely(err = ip_frag_reinit(qp))) {
 		ipq_kill(qp);
 		goto err;
 	}
···
 
 	/* Determine the position of this fragment. */
 	end = offset + skb->len - ihl;
+	err = -EINVAL;
 
 	/* Is this the final fragment? */
 	if ((flags & IP_MF) == 0) {
 		/* If we already have some bits beyond end
 		 * or have different end, the segment is corrrupted.
 		 */
-		if (end < qp->len ||
-		    ((qp->last_in & LAST_IN) && end != qp->len))
+		if (end < qp->q.len ||
+		    ((qp->q.last_in & LAST_IN) && end != qp->q.len))
 			goto err;
-		qp->last_in |= LAST_IN;
-		qp->len = end;
+		qp->q.last_in |= LAST_IN;
+		qp->q.len = end;
 	} else {
 		if (end&7) {
 			end &= ~7;
 			if (skb->ip_summed != CHECKSUM_UNNECESSARY)
 				skb->ip_summed = CHECKSUM_NONE;
 		}
-		if (end > qp->len) {
+		if (end > qp->q.len) {
 			/* Some bits beyond end -> corruption. */
-			if (qp->last_in & LAST_IN)
+			if (qp->q.last_in & LAST_IN)
 				goto err;
-			qp->len = end;
+			qp->q.len = end;
 		}
 	}
 	if (end == offset)
 		goto err;
 
+	err = -ENOMEM;
 	if (pskb_pull(skb, ihl) == NULL)
 		goto err;
-	if (pskb_trim_rcsum(skb, end-offset))
+
+	err = pskb_trim_rcsum(skb, end - offset);
+	if (err)
 		goto err;
 
 	/* Find out which fragments are in front and at the back of us
···
 	 * this fragment, right?
 	 */
 	prev = NULL;
-	for (next = qp->fragments; next != NULL; next = next->next) {
+	for (next = qp->q.fragments; next != NULL; next = next->next) {
 		if (FRAG_CB(next)->offset >= offset)
 			break;	/* bingo! */
 		prev = next;
···
 
 		if (i > 0) {
 			offset += i;
+			err = -EINVAL;
 			if (end <= offset)
 				goto err;
+			err = -ENOMEM;
 			if (!pskb_pull(skb, i))
 				goto err;
 			if (skb->ip_summed != CHECKSUM_UNNECESSARY)
 				skb->ip_summed = CHECKSUM_NONE;
 		}
 	}
+
+	err = -ENOMEM;
 
 	while (next && FRAG_CB(next)->offset < end) {
 		int i = end - FRAG_CB(next)->offset; /* overlap is 'i' bytes */
···
 			if (!pskb_pull(next, i))
 				goto err;
 			FRAG_CB(next)->offset += i;
-			qp->meat -= i;
+			qp->q.meat -= i;
 			if (next->ip_summed != CHECKSUM_UNNECESSARY)
 				next->ip_summed = CHECKSUM_NONE;
 			break;
···
 			if (prev)
 				prev->next = next;
 			else
-				qp->fragments = next;
+				qp->q.fragments = next;
 
-			qp->meat -= free_it->len;
+			qp->q.meat -= free_it->len;
 			frag_kfree_skb(free_it, NULL);
 		}
 	}
···
 	if (prev)
 		prev->next = skb;
 	else
-		qp->fragments = skb;
+		qp->q.fragments = skb;
 
-	if (skb->dev)
-		qp->iif = skb->dev->ifindex;
-	skb->dev = NULL;
-	qp->stamp = skb->tstamp;
-	qp->meat += skb->len;
-	atomic_add(skb->truesize, &ip_frag_mem);
+	dev = skb->dev;
+	if (dev) {
+		qp->iif = dev->ifindex;
+		skb->dev = NULL;
+	}
+	qp->q.stamp = skb->tstamp;
+	qp->q.meat += skb->len;
+	atomic_add(skb->truesize, &ip4_frags.mem);
 	if (offset == 0)
-		qp->last_in |= FIRST_IN;
+		qp->q.last_in |= FIRST_IN;
 
-	write_lock(&ipfrag_lock);
-	list_move_tail(&qp->lru_list, &ipq_lru_list);
-	write_unlock(&ipfrag_lock);
+	if (qp->q.last_in == (FIRST_IN | LAST_IN) && qp->q.meat == qp->q.len)
+		return ip_frag_reasm(qp, prev, dev);
 
-	return;
+	write_lock(&ip4_frags.lock);
+	list_move_tail(&qp->q.lru_list, &ip4_frags.lru_list);
+	write_unlock(&ip4_frags.lock);
+	return -EINPROGRESS;
 
 err:
 	kfree_skb(skb);
+	return err;
 }
 
 
 /* Build a new IP datagram from all its fragments. */
 
-static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev)
+static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
+			 struct net_device *dev)
 {
 	struct iphdr *iph;
-	struct sk_buff *fp, *head = qp->fragments;
+	struct sk_buff *fp, *head = qp->q.fragments;
 	int len;
 	int ihlen;
+	int err;
 
 	ipq_kill(qp);
+
+	/* Make the one we just received the head. */
+	if (prev) {
+		head = prev->next;
+		fp = skb_clone(head, GFP_ATOMIC);
+
+		if (!fp)
+			goto out_nomem;
+
+		fp->next = head->next;
+		prev->next = fp;
+
+		skb_morph(head, qp->q.fragments);
+		head->next = qp->q.fragments->next;
+
+		kfree_skb(qp->q.fragments);
+		qp->q.fragments = head;
+	}
 
 	BUG_TRAP(head != NULL);
 	BUG_TRAP(FRAG_CB(head)->offset == 0);
 
 	/* Allocate a new buffer for the datagram. */
 	ihlen = ip_hdrlen(head);
-	len = ihlen + qp->len;
+	len = ihlen + qp->q.len;
 
+	err = -E2BIG;
 	if (len > 65535)
 		goto out_oversize;
 
 	/* Head of list must not be cloned. */
+	err = -ENOMEM;
 	if (skb_cloned(head) && pskb_expand_head(head, 0, 0, GFP_ATOMIC))
 		goto out_nomem;
 
···
 		head->len -= clone->len;
 		clone->csum = 0;
 		clone->ip_summed = head->ip_summed;
-		atomic_add(clone->truesize, &ip_frag_mem);
+		atomic_add(clone->truesize, &ip4_frags.mem);
 	}
 
 	skb_shinfo(head)->frag_list = head->next;
 	skb_push(head, head->data - skb_network_header(head));
-	atomic_sub(head->truesize, &ip_frag_mem);
+	atomic_sub(head->truesize, &ip4_frags.mem);
 
 	for (fp=head->next; fp; fp = fp->next) {
 		head->data_len += fp->len;
···
 		else if (head->ip_summed == CHECKSUM_COMPLETE)
 			head->csum = csum_add(head->csum, fp->csum);
 		head->truesize += fp->truesize;
-		atomic_sub(fp->truesize, &ip_frag_mem);
+		atomic_sub(fp->truesize, &ip4_frags.mem);
 	}
 
 	head->next = NULL;
 	head->dev = dev;
-	head->tstamp = qp->stamp;
+	head->tstamp = qp->q.stamp;
 
 	iph = ip_hdr(head);
 	iph->frag_off = 0;
 	iph->tot_len = htons(len);
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMOKS);
-	qp->fragments = NULL;
-	return head;
+	qp->q.fragments = NULL;
+	return 0;
 
 out_nomem:
 	LIMIT_NETDEBUG(KERN_ERR "IP: queue_glue: no memory for gluing "
···
 			NIPQUAD(qp->saddr));
 out_fail:
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
-	return NULL;
+	return err;
 }
 
 /* Process an incoming IP datagram fragment. */
-struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user)
+int ip_defrag(struct sk_buff *skb, u32 user)
 {
 	struct ipq *qp;
-	struct net_device *dev;
 
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMREQDS);
 
 	/* Start by cleaning up the memory. */
-	if (atomic_read(&ip_frag_mem) > sysctl_ipfrag_high_thresh)
+	if (atomic_read(&ip4_frags.mem) > ip4_frags_ctl.high_thresh)
 		ip_evictor();
-
-	dev = skb->dev;
 
 	/* Lookup (or create) queue header */
 	if ((qp = ip_find(ip_hdr(skb), user)) != NULL) {
-		struct sk_buff *ret = NULL;
+		int ret;
 
-		spin_lock(&qp->lock);
+		spin_lock(&qp->q.lock);
 
-		ip_frag_queue(qp, skb);
+		ret = ip_frag_queue(qp, skb);
 
-		if (qp->last_in == (FIRST_IN|LAST_IN) &&
-		    qp->meat == qp->len)
-			ret = ip_frag_reasm(qp, dev);
-
-		spin_unlock(&qp->lock);
-		ipq_put(qp, NULL);
+		spin_unlock(&qp->q.lock);
+		ipq_put(qp);
 		return ret;
 	}
 
 	IP_INC_STATS_BH(IPSTATS_MIB_REASMFAILS);
 	kfree_skb(skb);
-	return NULL;
+	return -ENOMEM;
 }
 
 void __init ipfrag_init(void)
 {
-	ipfrag_hash_rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
-				 (jiffies ^ (jiffies >> 6)));
-
-	init_timer(&ipfrag_secret_timer);
-	ipfrag_secret_timer.function = ipfrag_secret_rebuild;
-	ipfrag_secret_timer.expires = jiffies + sysctl_ipfrag_secret_interval;
-	add_timer(&ipfrag_secret_timer);
+	ip4_frags.ctl = &ip4_frags_ctl;
+	ip4_frags.hashfn = ip4_hashfn;
+	ip4_frags.destructor = ip4_frag_free;
+	ip4_frags.skb_free = NULL;
+	ip4_frags.qsize = sizeof(struct ipq);
+	inet_frags_init(&ip4_frags);
 }
 
 EXPORT_SYMBOL(ip_defrag);

net/ipv4/ip_input.c

···
 		    (!sk->sk_bound_dev_if ||
 		     sk->sk_bound_dev_if == skb->dev->ifindex)) {
 			if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-				skb = ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN);
-				if (skb == NULL) {
+				if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN)) {
 					read_unlock(&ip_ra_lock);
 					return 1;
 				}
···
 	return 0;
 }
 
-static inline int ip_local_deliver_finish(struct sk_buff *skb)
+static int ip_local_deliver_finish(struct sk_buff *skb)
 {
 	__skb_pull(skb, ip_hdrlen(skb));
 
···
 	 */
 
 	if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-		skb = ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER);
-		if (!skb)
+		if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
 			return 0;
 	}
 
···
 	return -1;
 }
 
-static inline int ip_rcv_finish(struct sk_buff *skb)
+static int ip_rcv_finish(struct sk_buff *skb)
 {
 	const struct iphdr *iph = ip_hdr(skb);
 	struct rtable *rt;

net/ipv4/ip_output.c

···
 	       skb->dst->dev->mtu : dst_mtu(skb->dst);
 }
 
-static inline int ip_finish_output(struct sk_buff *skb)
+static int ip_finish_output(struct sk_buff *skb)
 {
 #if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM)
 	/* Policy lookup after SNAT yielded a new policy */

net/ipv4/ipvs/ip_vs_app.c

···
 #include <linux/skbuff.h>
 #include <linux/in.h>
 #include <linux/ip.h>
+#include <linux/netfilter.h>
 #include <net/net_namespace.h>
 #include <net/protocol.h>
 #include <net/tcp.h>
···
 	spin_unlock(&cp->lock);
 }
 
-static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
+static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb,
 				  struct ip_vs_app *app)
 {
 	int diff;
-	const unsigned int tcp_offset = ip_hdrlen(*pskb);
+	const unsigned int tcp_offset = ip_hdrlen(skb);
 	struct tcphdr *th;
 	__u32 seq;
 
-	if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
+	if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
 		return 0;
 
-	th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
+	th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
 
 	/*
 	 *	Remember seq number in case this pkt gets resized
···
 	if (app->pkt_out == NULL)
 		return 1;
 
-	if (!app->pkt_out(app, cp, pskb, &diff))
+	if (!app->pkt_out(app, cp, skb, &diff))
 		return 0;
 
 	/*
···
  *	called by ipvs packet handler, assumes previously checked cp!=NULL
  *	returns false if it can't handle packet (oom)
  */
-int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
+int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb)
 {
 	struct ip_vs_app *app;
 
···
 
 	/* TCP is complicated */
 	if (cp->protocol == IPPROTO_TCP)
-		return app_tcp_pkt_out(cp, pskb, app);
+		return app_tcp_pkt_out(cp, skb, app);
 
 	/*
 	 *	Call private output hook function
···
 	if (app->pkt_out == NULL)
 		return 1;
 
-	return app->pkt_out(app, cp, pskb, NULL);
+	return app->pkt_out(app, cp, skb, NULL);
 }
 
 
-static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
+static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb,
 				 struct ip_vs_app *app)
 {
 	int diff;
-	const unsigned int tcp_offset = ip_hdrlen(*pskb);
+	const unsigned int tcp_offset = ip_hdrlen(skb);
 	struct tcphdr *th;
 	__u32 seq;
 
-	if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
+	if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
 		return 0;
 
-	th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
+	th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
 
 	/*
 	 *	Remember seq number in case this pkt gets resized
···
 	if (app->pkt_in == NULL)
 		return 1;
 
-	if (!app->pkt_in(app, cp, pskb, &diff))
+	if (!app->pkt_in(app, cp, skb, &diff))
 		return 0;
 
 	/*
···
  *	called by ipvs packet handler, assumes previously checked cp!=NULL.
  *	returns false if can't handle packet (oom).
  */
-int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
+int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb)
 {
 	struct ip_vs_app *app;
 
···
 
 	/* TCP is complicated */
 	if (cp->protocol == IPPROTO_TCP)
-		return app_tcp_pkt_in(cp, pskb, app);
+		return app_tcp_pkt_in(cp, skb, app);
 
 	/*
 	 *	Call private input hook function
···
 	if (app->pkt_in == NULL)
 		return 1;
 
-	return app->pkt_in(app, cp, pskb, NULL);
+	return app->pkt_in(app, cp, skb, NULL);
 }
 
 

net/ipv4/ipvs/ip_vs_core.c

···
 #ifdef CONFIG_IP_VS_DEBUG
 EXPORT_SYMBOL(ip_vs_get_debug_level);
 #endif
-EXPORT_SYMBOL(ip_vs_make_skb_writable);
 
 
 /* ID used in ICMP lookups */
···
 	return pp->state_transition(cp, direction, skb, pp);
 }
 
-
-int ip_vs_make_skb_writable(struct sk_buff **pskb, int writable_len)
-{
-	struct sk_buff *skb = *pskb;
-
-	/* skb is already used, better copy skb and its payload */
-	if (unlikely(skb_shared(skb) || skb->sk))
-		goto copy_skb;
-
-	/* skb data is already used, copy it */
-	if (unlikely(skb_cloned(skb)))
-		goto copy_data;
-
-	return pskb_may_pull(skb, writable_len);
-
-  copy_data:
-	if (unlikely(writable_len > skb->len))
-		return 0;
-	return !pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-
-  copy_skb:
-	if (unlikely(writable_len > skb->len))
-		return 0;
-	skb = skb_copy(skb, GFP_ATOMIC);
-	if (!skb)
-		return 0;
-	BUG_ON(skb_is_nonlinear(skb));
-
-	/* Rest of kernel will get very unhappy if we pass it a
-	   suddenly-orphaned skbuff */
-	if ((*pskb)->sk)
-		skb_set_owner_w(skb, (*pskb)->sk);
-	kfree_skb(*pskb);
-	*pskb = skb;
-	return 1;
-}
 
 /*
  *  IPVS persistent scheduling function
···
  *      for VS/NAT.
  */
 static unsigned int ip_vs_post_routing(unsigned int hooknum,
-				       struct sk_buff **pskb,
+				       struct sk_buff *skb,
 				       const struct net_device *in,
 				       const struct net_device *out,
 				       int (*okfn)(struct sk_buff *))
 {
-	if (!((*pskb)->ipvs_property))
+	if (!skb->ipvs_property)
 		return NF_ACCEPT;
 	/* The packet was sent from IPVS, exit this chain */
 	return NF_STOP;
···
 	return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
 }
 
-static inline struct sk_buff *
-ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
+static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
 {
-	skb = ip_defrag(skb, user);
-	if (skb)
+	int err = ip_defrag(skb, user);
+
+	if (!err)
 		ip_send_check(ip_hdr(skb));
-	return skb;
+
+	return err;
 }
 
 /*
···
  *	Currently handles error types - unreachable, quench, ttl exceeded.
  *	(Only used in VS/NAT)
  */
-static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
+static int ip_vs_out_icmp(struct sk_buff *skb, int *related)
 {
-	struct sk_buff *skb = *pskb;
 	struct iphdr *iph;
 	struct icmphdr	_icmph, *ic;
 	struct iphdr	_ciph, *cih;	/* The ip header contained within the ICMP */
···
 
 	/* reassemble IP fragments */
 	if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-		skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
-		if (!skb)
+		if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
 			return NF_STOLEN;
-		*pskb = skb;
 	}
 
 	iph = ip_hdr(skb);
···
 
 	if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol)
 		offset += 2 * sizeof(__u16);
-	if (!ip_vs_make_skb_writable(pskb, offset))
+	if (!skb_make_writable(skb, offset))
 		goto out;
-	skb = *pskb;
 
 	ip_vs_nat_icmp(skb, pp, cp, 1);
 
···
  *      rewrite addresses of the packet and send it on its way...
  */
 static unsigned int
-ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
 	  const struct net_device *in, const struct net_device *out,
 	  int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff  *skb = *pskb;
 	struct iphdr	*iph;
 	struct ip_vs_protocol *pp;
 	struct ip_vs_conn *cp;
···
 
 	iph = ip_hdr(skb);
 	if (unlikely(iph->protocol == IPPROTO_ICMP)) {
-		int related, verdict = ip_vs_out_icmp(pskb, &related);
+		int related, verdict = ip_vs_out_icmp(skb, &related);
 
 		if (related)
 			return verdict;
-		skb = *pskb;
 		iph = ip_hdr(skb);
 	}
 
···
 	/* reassemble IP fragments */
 	if (unlikely(iph->frag_off & htons(IP_MF|IP_OFFSET) &&
 		     !pp->dont_defrag)) {
-		skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
-		if (!skb)
+		if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
 			return NF_STOLEN;
 		iph = ip_hdr(skb);
-		*pskb = skb;
 	}
 
 	ihl = iph->ihl << 2;
···
 
 	IP_VS_DBG_PKT(11, pp, skb, 0, "Outgoing packet");
 
-	if (!ip_vs_make_skb_writable(pskb, ihl))
+	if (!skb_make_writable(skb, ihl))
 		goto drop;
 
 	/* mangle the packet */
-	if (pp->snat_handler && !pp->snat_handler(pskb, pp, cp))
+	if (pp->snat_handler && !pp->snat_handler(skb, pp, cp))
 		goto drop;
-	skb = *pskb;
 	ip_hdr(skb)->saddr = cp->vaddr;
 	ip_send_check(ip_hdr(skb));
 
···
 	 * if it came from this machine itself.  So re-compute
 	 * the routing information.
 	 */
-	if (ip_route_me_harder(pskb, RTN_LOCAL) != 0)
+	if (ip_route_me_harder(skb, RTN_LOCAL) != 0)
 		goto drop;
-	skb = *pskb;
 
 	IP_VS_DBG_PKT(10, pp, skb, 0, "After SNAT");
 
···
 
   drop:
 	ip_vs_conn_put(cp);
-	kfree_skb(*pskb);
+	kfree_skb(skb);
 	return NF_STOLEN;
 }
 
···
  *	Currently handles error types - unreachable, quench, ttl exceeded.
  */
 static int
-ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
+ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
 {
-	struct sk_buff *skb = *pskb;
 	struct iphdr *iph;
 	struct icmphdr	_icmph, *ic;
 	struct iphdr	_ciph, *cih;	/* The ip header contained within the ICMP */
···
 
 	/* reassemble IP fragments */
 	if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-		skb = ip_vs_gather_frags(skb,
-					 hooknum == NF_IP_LOCAL_IN ?
-					 IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD);
-		if (!skb)
+		if (ip_vs_gather_frags(skb, hooknum == NF_IP_LOCAL_IN ?
+					    IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD))
 			return NF_STOLEN;
-		*pskb = skb;
 	}
 
 	iph = ip_hdr(skb);
···
  *	and send it on its way...
  */
 static unsigned int
-ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
 	 const struct net_device *in, const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff	*skb = *pskb;
 	struct iphdr	*iph;
 	struct ip_vs_protocol *pp;
 	struct ip_vs_conn *cp;
···
 
 	iph = ip_hdr(skb);
 	if (unlikely(iph->protocol == IPPROTO_ICMP)) {
-		int related, verdict = ip_vs_in_icmp(pskb, &related, hooknum);
+		int related, verdict = ip_vs_in_icmp(skb, &related, hooknum);
 
 		if (related)
 			return verdict;
-		skb = *pskb;
 		iph = ip_hdr(skb);
 	}
 
···
  *      and send them to ip_vs_in_icmp.
  */
 static unsigned int
-ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff *skb,
 		   const struct net_device *in, const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
 {
 	int r;
 
-	if (ip_hdr(*pskb)->protocol != IPPROTO_ICMP)
+	if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
 		return NF_ACCEPT;
 
-	return ip_vs_in_icmp(pskb, &r, hooknum);
+	return ip_vs_in_icmp(skb, &r, hooknum);
 }
 
 

net/ipv4/ipvs/ip_vs_ftp.c

···
 #include <linux/skbuff.h>
 #include <linux/in.h>
 #include <linux/ip.h>
+#include <linux/netfilter.h>
 #include <net/protocol.h>
 #include <net/tcp.h>
 #include <asm/unaligned.h>
···
  * xxx,xxx,xxx,xxx is the server address, ppp,ppp is the server port number.
  */
 static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
-			 struct sk_buff **pskb, int *diff)
+			 struct sk_buff *skb, int *diff)
 {
 	struct iphdr *iph;
 	struct tcphdr *th;
···
 		return 1;
 
 	/* Linear packets are much easier to deal with. */
-	if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return 0;
 
 	if (cp->app_data == &ip_vs_ftp_pasv) {
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 		th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
 		data = (char *)th + (th->doff << 2);
-		data_limit = skb_tail_pointer(*pskb);
+		data_limit = skb_tail_pointer(skb);
 
 		if (ip_vs_ftp_get_addrport(data, data_limit,
 					   SERVER_STRING,
···
 			memcpy(start, buf, buf_len);
 			ret = 1;
 		} else {
-			ret = !ip_vs_skb_replace(*pskb, GFP_ATOMIC, start,
+			ret = !ip_vs_skb_replace(skb, GFP_ATOMIC, start,
 					  end-start, buf, buf_len);
 		}
 
···
  * the client.
  */
 static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
-			struct sk_buff **pskb, int *diff)
+			struct sk_buff *skb, int *diff)
 {
 	struct iphdr *iph;
 	struct tcphdr *th;
···
 		return 1;
 
 	/* Linear packets are much easier to deal with. */
-	if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return 0;
 
 	/*
 	 * Detecting whether it is passive
 	 */
-	iph = ip_hdr(*pskb);
+	iph = ip_hdr(skb);
 	th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
 
 	/* Since there may be OPTIONS in the TCP packet and the HLEN is
 	   the length of the header in 32-bit multiples, it is accurate
 	   to calculate data address by th+HLEN*4 */
 	data = data_start = (char *)th + (th->doff << 2);
-	data_limit = skb_tail_pointer(*pskb);
+	data_limit = skb_tail_pointer(skb);
 
 	while (data <= data_limit - 6) {
 		if (strnicmp(data, "PASV\r\n", 6) == 0) {

net/ipv4/ipvs/ip_vs_proto_tcp.c

···
 #include <linux/tcp.h>                  /* for tcphdr */
 #include <net/ip.h>
 #include <net/tcp.h>                    /* for csum_tcpudp_magic */
+#include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
 
 #include <net/ip_vs.h>
···
 
 
 static int
-tcp_snat_handler(struct sk_buff **pskb,
+tcp_snat_handler(struct sk_buff *skb,
 		 struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
 {
 	struct tcphdr *tcph;
-	const unsigned int tcphoff = ip_hdrlen(*pskb);
+	const unsigned int tcphoff = ip_hdrlen(skb);
 
 	/* csum_check requires unshared skb */
-	if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
+	if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
 		return 0;
 
 	if (unlikely(cp->app != NULL)) {
 		/* Some checks before mangling */
-		if (pp->csum_check && !pp->csum_check(*pskb, pp))
+		if (pp->csum_check && !pp->csum_check(skb, pp))
 			return 0;
 
 		/* Call application helper if needed */
-		if (!ip_vs_app_pkt_out(cp, pskb))
+		if (!ip_vs_app_pkt_out(cp, skb))
 			return 0;
 	}
 
-	tcph = (void *)ip_hdr(*pskb) + tcphoff;
+	tcph = (void *)ip_hdr(skb) + tcphoff;
 	tcph->source = cp->vport;
 
 	/* Adjust TCP checksums */
···
 		/* Only port and addr are changed, do fast csum update */
 		tcp_fast_csum_update(tcph, cp->daddr, cp->vaddr,
 				     cp->dport, cp->vport);
-		if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
-			(*pskb)->ip_summed = CHECKSUM_NONE;
+		if (skb->ip_summed == CHECKSUM_COMPLETE)
+			skb->ip_summed = CHECKSUM_NONE;
 	} else {
 		/* full checksum calculation */
 		tcph->check = 0;
-		(*pskb)->csum = skb_checksum(*pskb, tcphoff,
-					     (*pskb)->len - tcphoff, 0);
+		skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
 		tcph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
-						(*pskb)->len - tcphoff,
-						cp->protocol,
-						(*pskb)->csum);
+						skb->len - tcphoff,
+						cp->protocol, skb->csum);
 		IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
 			  pp->name, tcph->check,
 			  (char*)&(tcph->check) - (char*)tcph);
···
 
 
 static int
-tcp_dnat_handler(struct sk_buff **pskb,
+tcp_dnat_handler(struct sk_buff *skb,
 		 struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
 {
 	struct tcphdr *tcph;
-	const unsigned int tcphoff = ip_hdrlen(*pskb);
+	const unsigned int tcphoff = ip_hdrlen(skb);
 
 	/* csum_check requires unshared skb */
-	if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
+	if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
 		return 0;
 
 	if (unlikely(cp->app != NULL)) {
 		/* Some checks before mangling */
-		if (pp->csum_check && !pp->csum_check(*pskb, pp))
+		if (pp->csum_check && !pp->csum_check(skb, pp))
 			return 0;
 
 		/*
 		 *	Attempt ip_vs_app call.
 		 *	It will fix ip_vs_conn and iph ack_seq stuff
 		 */
-		if (!ip_vs_app_pkt_in(cp, pskb))
+		if (!ip_vs_app_pkt_in(cp, skb))
 			return 0;
 	}
 
-	tcph = (void *)ip_hdr(*pskb) + tcphoff;
+	tcph = (void *)ip_hdr(skb) + tcphoff;
 	tcph->dest = cp->dport;
 
 	/*
···
 		/* Only port and addr are changed, do fast csum update */
 		tcp_fast_csum_update(tcph, cp->vaddr, cp->daddr,
 				     cp->vport, cp->dport);
-		if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
-			(*pskb)->ip_summed = CHECKSUM_NONE;
+		if (skb->ip_summed == CHECKSUM_COMPLETE)
+			skb->ip_summed = CHECKSUM_NONE;
 	} else {
 		/* full checksum calculation */
 		tcph->check = 0;
-		(*pskb)->csum = skb_checksum(*pskb, tcphoff,
-					     (*pskb)->len - tcphoff, 0);
+		skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
 		tcph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
-						(*pskb)->len - tcphoff,
-						cp->protocol,
-						(*pskb)->csum);
-		(*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
+						skb->len - tcphoff,
+						cp->protocol, skb->csum);
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
 	}
 	return 1;
 }

net/ipv4/ipvs/ip_vs_proto_udp.c

···
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <linux/kernel.h>
+#include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/udp.h>
 
···
 }
 
 static int
-udp_snat_handler(struct sk_buff **pskb,
+udp_snat_handler(struct sk_buff *skb,
 		 struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
 {
 	struct udphdr *udph;
-	const unsigned int udphoff = ip_hdrlen(*pskb);
+	const unsigned int udphoff = ip_hdrlen(skb);
 
 	/* csum_check requires unshared skb */
-	if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
+	if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
 		return 0;
 
 	if (unlikely(cp->app != NULL)) {
 		/* Some checks before mangling */
-		if (pp->csum_check && !pp->csum_check(*pskb, pp))
+		if (pp->csum_check && !pp->csum_check(skb, pp))
 			return 0;
 
 		/*
 		 *	Call application helper if needed
 		 */
-		if (!ip_vs_app_pkt_out(cp, pskb))
+		if (!ip_vs_app_pkt_out(cp, skb))
 			return 0;
 	}
 
-	udph = (void *)ip_hdr(*pskb) + udphoff;
+	udph = (void *)ip_hdr(skb) + udphoff;
 	udph->source = cp->vport;
 
 	/*
···
 		/* Only port and addr are changed, do fast csum update */
 		udp_fast_csum_update(udph, cp->daddr, cp->vaddr,
 				     cp->dport, cp->vport);
-		if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
-			(*pskb)->ip_summed = CHECKSUM_NONE;
+		if (skb->ip_summed == CHECKSUM_COMPLETE)
+			skb->ip_summed = CHECKSUM_NONE;
 	} else {
 		/* full checksum calculation */
 		udph->check = 0;
-		(*pskb)->csum = skb_checksum(*pskb, udphoff,
-					     (*pskb)->len - udphoff, 0);
+		skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
 		udph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
-						(*pskb)->len - udphoff,
-						cp->protocol,
-						(*pskb)->csum);
+						skb->len - udphoff,
+						cp->protocol, skb->csum);
 		if (udph->check == 0)
 			udph->check = CSUM_MANGLED_0;
 		IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
···
 
 
 static int
-udp_dnat_handler(struct sk_buff **pskb,
+udp_dnat_handler(struct sk_buff *skb,
 		 struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
 {
 	struct udphdr *udph;
-	unsigned int udphoff = ip_hdrlen(*pskb);
+	unsigned int udphoff = ip_hdrlen(skb);
 
 	/* csum_check requires unshared skb */
-	if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
+	if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
 		return 0;
 
 	if (unlikely(cp->app != NULL)) {
 		/* Some checks before mangling */
-		if (pp->csum_check && !pp->csum_check(*pskb, pp))
+		if (pp->csum_check && !pp->csum_check(skb, pp))
 			return 0;
 
 		/*
 		 *	Attempt ip_vs_app call.
 		 *	It will fix ip_vs_conn
 		 */
-		if (!ip_vs_app_pkt_in(cp, pskb))
+		if (!ip_vs_app_pkt_in(cp, skb))
 			return 0;
 	}
 
-	udph = (void *)ip_hdr(*pskb) + udphoff;
+	udph = (void *)ip_hdr(skb) + udphoff;
 	udph->dest = cp->dport;
 
 	/*
···
 		/* Only port and addr are changed, do fast csum update */
 		udp_fast_csum_update(udph, cp->vaddr, cp->daddr,
 				     cp->vport, cp->dport);
-		if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
-			(*pskb)->ip_summed = CHECKSUM_NONE;
+		if (skb->ip_summed == CHECKSUM_COMPLETE)
+			skb->ip_summed = CHECKSUM_NONE;
 	} else {
 		/* full checksum calculation */
 		udph->check = 0;
-		(*pskb)->csum = skb_checksum(*pskb, udphoff,
-					     (*pskb)->len - udphoff, 0);
+		skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
 		udph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
-						(*pskb)->len - udphoff,
-						cp->protocol,
-						(*pskb)->csum);
+						skb->len - udphoff,
+						cp->protocol, skb->csum);
 		if (udph->check == 0)
 			udph->check = CSUM_MANGLED_0;
-		(*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
 	}
 	return 1;
 }

net/ipv4/ipvs/ip_vs_xmit.c

···
 	}
 
 	/* copy-on-write the packet before mangling it */
-	if (!ip_vs_make_skb_writable(&skb, sizeof(struct iphdr)))
+	if (!skb_make_writable(skb, sizeof(struct iphdr)))
 		goto tx_error_put;
 
 	if (skb_cow(skb, rt->u.dst.dev->hard_header_len))
···
 	skb->dst = &rt->u.dst;
 
 	/* mangle the packet */
-	if (pp->dnat_handler && !pp->dnat_handler(&skb, pp, cp))
+	if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
 		goto tx_error;
 	ip_hdr(skb)->daddr = cp->daddr;
 	ip_send_check(ip_hdr(skb));
···
 	}
 
 	/* copy-on-write the packet before mangling it */
-	if (!ip_vs_make_skb_writable(&skb, offset))
+	if (!skb_make_writable(skb, offset))
 		goto tx_error_put;
 
 	if (skb_cow(skb, rt->u.dst.dev->hard_header_len))

net/ipv4/netfilter.c

···
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/ip.h>
+#include <linux/skbuff.h>
 #include <net/route.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
 
 /* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */
-int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
+int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type)
 {
-	const struct iphdr *iph = ip_hdr(*pskb);
+	const struct iphdr *iph = ip_hdr(skb);
 	struct rtable *rt;
 	struct flowi fl = {};
 	struct dst_entry *odst;
···
 		if (type == RTN_LOCAL)
 			fl.nl_u.ip4_u.saddr = iph->saddr;
 		fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
-		fl.oif = (*pskb)->sk ? (*pskb)->sk->sk_bound_dev_if : 0;
-		fl.mark = (*pskb)->mark;
+		fl.oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
+		fl.mark = skb->mark;
 		if (ip_route_output_key(&rt, &fl) != 0)
 			return -1;
 
 		/* Drop old route. */
-		dst_release((*pskb)->dst);
-		(*pskb)->dst = &rt->u.dst;
+		dst_release(skb->dst);
+		skb->dst = &rt->u.dst;
 	} else {
 		/* non-local src, find valid iif to satisfy
 		 * rp-filter when calling ip_route_input. */
···
 		if (ip_route_output_key(&rt, &fl) != 0)
 			return -1;
 
-		odst = (*pskb)->dst;
-		if (ip_route_input(*pskb, iph->daddr, iph->saddr,
+		odst = skb->dst;
+		if (ip_route_input(skb, iph->daddr, iph->saddr,
 				   RT_TOS(iph->tos), rt->u.dst.dev) != 0) {
 			dst_release(&rt->u.dst);
 			return -1;
···
 		dst_release(odst);
 	}
 
-	if ((*pskb)->dst->error)
+	if (skb->dst->error)
 		return -1;
 
 #ifdef CONFIG_XFRM
-	if (!(IPCB(*pskb)->flags & IPSKB_XFRM_TRANSFORMED) &&
-	    xfrm_decode_session(*pskb, &fl, AF_INET) == 0)
-		if (xfrm_lookup(&(*pskb)->dst, &fl, (*pskb)->sk, 0))
+	if (!(IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED) &&
+	    xfrm_decode_session(skb, &fl, AF_INET) == 0)
+		if (xfrm_lookup(&skb->dst, &fl, skb->sk, 0))
 			return -1;
 #endif
 
 	/* Change in oif may mean change in hh_len. */
-	hh_len = (*pskb)->dst->dev->hard_header_len;
-	if (skb_headroom(*pskb) < hh_len) {
-		struct sk_buff *nskb;
-
-		nskb = skb_realloc_headroom(*pskb, hh_len);
-		if (!nskb)
-			return -1;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
+	hh_len = skb->dst->dev->hard_header_len;
+	if (skb_headroom(skb) < hh_len &&
+	    pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
+		return -1;
 
 	return 0;
 }
 EXPORT_SYMBOL(ip_route_me_harder);
 
 #ifdef CONFIG_XFRM
-int ip_xfrm_me_harder(struct sk_buff **pskb)
+int ip_xfrm_me_harder(struct sk_buff *skb)
 {
 	struct flowi fl;
 	unsigned int hh_len;
 	struct dst_entry *dst;
 
-	if (IPCB(*pskb)->flags & IPSKB_XFRM_TRANSFORMED)
+	if (IPCB(skb)->flags & IPSKB_XFRM_TRANSFORMED)
 		return 0;
-	if (xfrm_decode_session(*pskb, &fl, AF_INET) < 0)
+	if (xfrm_decode_session(skb, &fl, AF_INET) < 0)
 		return -1;
 
-	dst = (*pskb)->dst;
+	dst = skb->dst;
 	if (dst->xfrm)
 		dst = ((struct xfrm_dst *)dst)->route;
 	dst_hold(dst);
 
-	if (xfrm_lookup(&dst, &fl, (*pskb)->sk, 0) < 0)
+	if (xfrm_lookup(&dst, &fl, skb->sk, 0) < 0)
 		return -1;
 
-	dst_release((*pskb)->dst);
-	(*pskb)->dst = dst;
+	dst_release(skb->dst);
+	skb->dst = dst;
 
 	/* Change in oif may mean change in hh_len. */
-	hh_len = (*pskb)->dst->dev->hard_header_len;
-	if (skb_headroom(*pskb) < hh_len) {
-		struct sk_buff *nskb;
-
-		nskb = skb_realloc_headroom(*pskb, hh_len);
-		if (!nskb)
-			return -1;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
+	hh_len = skb->dst->dev->hard_header_len;
+	if (skb_headroom(skb) < hh_len &&
+	    pskb_expand_head(skb, hh_len - skb_headroom(skb), 0, GFP_ATOMIC))
+		return -1;
 	return 0;
 }
 EXPORT_SYMBOL(ip_xfrm_me_harder);
···
 	}
 }
 
-static int nf_ip_reroute(struct sk_buff **pskb, const struct nf_info *info)
+static int nf_ip_reroute(struct sk_buff *skb, const struct nf_info *info)
 {
 	const struct ip_rt_info *rt_info = nf_info_reroute(info);
 
 	if (info->hook == NF_IP_LOCAL_OUT) {
-		const struct iphdr *iph = ip_hdr(*pskb);
+		const struct iphdr *iph = ip_hdr(skb);
 
 		if (!(iph->tos == rt_info->tos
 		      && iph->daddr == rt_info->daddr
 		      && iph->saddr == rt_info->saddr))
-			return ip_route_me_harder(pskb, RTN_UNSPEC);
+			return ip_route_me_harder(skb, RTN_UNSPEC);
 	}
 	return 0;
 }

net/ipv4/netfilter/arp_tables.c

···
 	return 1;
 }
 
-static unsigned int arpt_error(struct sk_buff **pskb,
+static unsigned int arpt_error(struct sk_buff *skb,
 			       const struct net_device *in,
 			       const struct net_device *out,
 			       unsigned int hooknum,
···
 	return (struct arpt_entry *)(base + offset);
 }
 
-unsigned int arpt_do_table(struct sk_buff **pskb,
+unsigned int arpt_do_table(struct sk_buff *skb,
 			   unsigned int hook,
 			   const struct net_device *in,
 			   const struct net_device *out,
···
 	struct xt_table_info *private;
 
 	/* ARP header, plus 2 device addresses, plus 2 IP addresses.  */
-	if (!pskb_may_pull((*pskb), (sizeof(struct arphdr) +
-				     (2 * (*pskb)->dev->addr_len) +
-				     (2 * sizeof(u32)))))
+	if (!pskb_may_pull(skb, (sizeof(struct arphdr) +
+				 (2 * skb->dev->addr_len) +
+				 (2 * sizeof(u32)))))
 		return NF_DROP;
 
 	indev = in ? in->name : nulldevname;
···
 	e = get_entry(table_base, private->hook_entry[hook]);
 	back = get_entry(table_base, private->underflow[hook]);
 
-	arp = arp_hdr(*pskb);
+	arp = arp_hdr(skb);
 	do {
-		if (arp_packet_match(arp, (*pskb)->dev, indev, outdev, &e->arp)) {
+		if (arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) {
 			struct arpt_entry_target *t;
 			int hdr_len;
 
 			hdr_len = sizeof(*arp) + (2 * sizeof(struct in_addr)) +
-				(2 * (*pskb)->dev->addr_len);
+				(2 * skb->dev->addr_len);
 			ADD_COUNTER(e->counters, hdr_len, 1);
 
 			t = arpt_get_target(e);
···
 				/* Targets which reenter must return
 				 * abs. verdicts
 				 */
-				verdict = t->u.kernel.target->target(pskb,
+				verdict = t->u.kernel.target->target(skb,
 								     in, out,
 								     hook,
 								     t->u.kernel.target,
 								     t->data);
 
 				/* Target might have changed stuff. */
-				arp = arp_hdr(*pskb);
+				arp = arp_hdr(skb);
 
 				if (verdict == ARPT_CONTINUE)
 					e = (void *)e + e->next_offset;

net/ipv4/netfilter/arpt_mangle.c

···
 /* module that allows mangling of the arp payload */
 #include <linux/module.h>
+#include <linux/netfilter.h>
 #include <linux/netfilter_arp/arpt_mangle.h>
 #include <net/sock.h>
 
···
 MODULE_DESCRIPTION("arptables arp payload mangle target");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in, const struct net_device *out,
        unsigned int hooknum, const struct xt_target *target,
        const void *targinfo)
···
 	unsigned char *arpptr;
 	int pln, hln;
 
-	if (skb_shared(*pskb) || skb_cloned(*pskb)) {
-		struct sk_buff *nskb;
+	if (skb_make_writable(skb, skb->len))
+		return NF_DROP;
 
-		nskb = skb_copy(*pskb, GFP_ATOMIC);
-		if (!nskb)
-			return NF_DROP;
-		if ((*pskb)->sk)
-			skb_set_owner_w(nskb, (*pskb)->sk);
-		kfree_skb(*pskb);
-		*pskb = nskb;
-	}
-
-	arp = arp_hdr(*pskb);
-	arpptr = skb_network_header(*pskb) + sizeof(*arp);
+	arp = arp_hdr(skb);
+	arpptr = skb_network_header(skb) + sizeof(*arp);
 	pln = arp->ar_pln;
 	hln = arp->ar_hln;
 	/* We assume that pln and hln were checked in the match */
 	if (mangle->flags & ARPT_MANGLE_SDEV) {
 		if (ARPT_DEV_ADDR_LEN_MAX < hln ||
-		   (arpptr + hln > skb_tail_pointer(*pskb)))
+		   (arpptr + hln > skb_tail_pointer(skb)))
 			return NF_DROP;
 		memcpy(arpptr, mangle->src_devaddr, hln);
 	}
 	arpptr += hln;
 	if (mangle->flags & ARPT_MANGLE_SIP) {
 		if (ARPT_MANGLE_ADDR_LEN_MAX < pln ||
-		   (arpptr + pln > skb_tail_pointer(*pskb)))
+		   (arpptr + pln > skb_tail_pointer(skb)))
 			return NF_DROP;
 		memcpy(arpptr, &mangle->u_s.src_ip, pln);
 	}
 	arpptr += pln;
 	if (mangle->flags & ARPT_MANGLE_TDEV) {
 		if (ARPT_DEV_ADDR_LEN_MAX < hln ||
-		   (arpptr + hln > skb_tail_pointer(*pskb)))
+		   (arpptr + hln > skb_tail_pointer(skb)))
 			return NF_DROP;
 		memcpy(arpptr, mangle->tgt_devaddr, hln);
 	}
 	arpptr += hln;
 	if (mangle->flags & ARPT_MANGLE_TIP) {
 		if (ARPT_MANGLE_ADDR_LEN_MAX < pln ||
-		   (arpptr + pln > skb_tail_pointer(*pskb)))
+		   (arpptr + pln > skb_tail_pointer(skb)))
 			return NF_DROP;
 		memcpy(arpptr, &mangle->u_t.tgt_ip, pln);
 	}

net/ipv4/netfilter/arptable_filter.c

···
 
 /* The work comes in here from netfilter.c */
 static unsigned int arpt_hook(unsigned int hook,
-			      struct sk_buff **pskb,
+			      struct sk_buff *skb,
 			      const struct net_device *in,
 			      const struct net_device *out,
 			      int (*okfn)(struct sk_buff *))
 {
-	return arpt_do_table(pskb, hook, in, out, &packet_filter);
+	return arpt_do_table(skb, hook, in, out, &packet_filter);
 }
 
 static struct nf_hook_ops arpt_ops[] = {

net/ipv4/netfilter/ip_queue.c

···
 ipq_mangle_ipv4(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
 {
 	int diff;
+	int err;
 	struct iphdr *user_iph = (struct iphdr *)v->payload;
 
 	if (v->data_len < sizeof(*user_iph))
···
 		if (v->data_len > 0xFFFF)
 			return -EINVAL;
 		if (diff > skb_tailroom(e->skb)) {
-			struct sk_buff *newskb;
-
-			newskb = skb_copy_expand(e->skb,
-						 skb_headroom(e->skb),
-						 diff,
-						 GFP_ATOMIC);
-			if (newskb == NULL) {
-				printk(KERN_WARNING "ip_queue: OOM "
-				      "in mangle, dropping packet\n");
-				return -ENOMEM;
+			err = pskb_expand_head(e->skb, 0,
+					       diff - skb_tailroom(e->skb),
+					       GFP_ATOMIC);
+			if (err) {
+				printk(KERN_WARNING "ip_queue: error "
+				      "in mangle, dropping packet: %d\n", -err);
+				return err;
 			}
-			if (e->skb->sk)
-				skb_set_owner_w(newskb, e->skb->sk);
-			kfree_skb(e->skb);
-			e->skb = newskb;
 		}
 		skb_put(e->skb, diff);
 	}
-	if (!skb_make_writable(&e->skb, v->data_len))
+	if (!skb_make_writable(e->skb, v->data_len))
 		return -ENOMEM;
 	skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
 	e->skb->ip_summed = CHECKSUM_NONE;

net/ipv4/netfilter/ip_tables.c

···
 }
 
 static unsigned int
-ipt_error(struct sk_buff **pskb,
+ipt_error(struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  unsigned int hooknum,
···
 
 /* Returns one of the generic firewall policies, like NF_ACCEPT. */
 unsigned int
-ipt_do_table(struct sk_buff **pskb,
+ipt_do_table(struct sk_buff *skb,
 	     unsigned int hook,
 	     const struct net_device *in,
 	     const struct net_device *out,
···
 	struct xt_table_info *private;
 
 	/* Initialization */
-	ip = ip_hdr(*pskb);
-	datalen = (*pskb)->len - ip->ihl * 4;
+	ip = ip_hdr(skb);
+	datalen = skb->len - ip->ihl * 4;
 	indev = in ? in->name : nulldevname;
 	outdev = out ? out->name : nulldevname;
 	/* We handle fragments by dealing with the first fragment as
···
 			struct ipt_entry_target *t;
 
 			if (IPT_MATCH_ITERATE(e, do_match,
-					      *pskb, in, out,
+					      skb, in, out,
 					      offset, &hotdrop) != 0)
 				goto no_match;
 
···
 #if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
     defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
 			/* The packet is traced: log it */
-			if (unlikely((*pskb)->nf_trace))
-				trace_packet(*pskb, hook, in, out,
+			if (unlikely(skb->nf_trace))
+				trace_packet(skb, hook, in, out,
 					     table->name, private, e);
 #endif
 			/* Standard target? */
···
 				((struct ipt_entry *)table_base)->comefrom
 					= 0xeeeeeeec;
 #endif
-				verdict = t->u.kernel.target->target(pskb,
+				verdict = t->u.kernel.target->target(skb,
 								     in, out,
 								     hook,
 								     t->u.kernel.target,
···
 					= 0x57acc001;
 #endif
 				/* Target might have changed stuff. */
-				ip = ip_hdr(*pskb);
-				datalen = (*pskb)->len - ip->ihl * 4;
+				ip = ip_hdr(skb);
+				datalen = skb->len - ip->ihl * 4;
 
 				if (verdict == IPT_CONTINUE)
 					e = (void *)e + e->next_offset;

net/ipv4/netfilter/ipt_CLUSTERIP.c

···
  ***********************************************************************/
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
 	 * is only decremented by destroy() - and ip_tables guarantees
 	 * that the ->target() function isn't called after ->destroy() */
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	if (ct == NULL) {
 		printk(KERN_ERR "CLUSTERIP: no conntrack!\n");
 			/* FIXME: need to drop invalid ones, since replies
···
 
 	/* special case: ICMP error handling. conntrack distinguishes between
 	 * error messages (RELATED) and information requests (see below) */
-	if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP
+	if (ip_hdr(skb)->protocol == IPPROTO_ICMP
 	    && (ctinfo == IP_CT_RELATED
 		|| ctinfo == IP_CT_RELATED+IP_CT_IS_REPLY))
 		return XT_CONTINUE;
···
 	 * TIMESTAMP, INFO_REQUEST or ADDRESS type icmp packets from here
 	 * on, which all have an ID field [relevant for hashing]. */
 
-	hash = clusterip_hashfn(*pskb, cipinfo->config);
+	hash = clusterip_hashfn(skb, cipinfo->config);
 
 	switch (ctinfo) {
 		case IP_CT_NEW:
···
 
 	/* despite being received via linklayer multicast, this is
 	 * actually a unicast IP packet. TCP doesn't like PACKET_MULTICAST */
-	(*pskb)->pkt_type = PACKET_HOST;
+	skb->pkt_type = PACKET_HOST;
 
 	return XT_CONTINUE;
 }
···
 
 static unsigned int
 arp_mangle(unsigned int hook,
-	   struct sk_buff **pskb,
+	   struct sk_buff *skb,
 	   const struct net_device *in,
 	   const struct net_device *out,
 	   int (*okfn)(struct sk_buff *))
 {
-	struct arphdr *arp = arp_hdr(*pskb);
+	struct arphdr *arp = arp_hdr(skb);
 	struct arp_payload *payload;
 	struct clusterip_config *c;
 

net/ipv4/netfilter/ipt_ECN.c

···
 /* set ECT codepoint from IP header.
  * 	return false if there was an error. */
 static inline bool
-set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
+set_ect_ip(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
 {
-	struct iphdr *iph = ip_hdr(*pskb);
+	struct iphdr *iph = ip_hdr(skb);
 
 	if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
 		__u8 oldtos;
-		if (!skb_make_writable(pskb, sizeof(struct iphdr)))
+		if (!skb_make_writable(skb, sizeof(struct iphdr)))
 			return false;
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 		oldtos = iph->tos;
 		iph->tos &= ~IPT_ECN_IP_MASK;
 		iph->tos |= (einfo->ip_ect & IPT_ECN_IP_MASK);
···
 
 /* Return false if there was an error. */
 static inline bool
-set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
+set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
 {
 	struct tcphdr _tcph, *tcph;
 	__be16 oldval;
 
 	/* Not enought header? */
-	tcph = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
-				  sizeof(_tcph), &_tcph);
+	tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
 	if (!tcph)
 		return false;
 
···
 	     tcph->cwr == einfo->proto.tcp.cwr))
 		return true;
 
-	if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
+	if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
 		return false;
-	tcph = (void *)ip_hdr(*pskb) + ip_hdrlen(*pskb);
+	tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
 
 	oldval = ((__be16 *)tcph)[6];
 	if (einfo->operation & IPT_ECN_OP_SET_ECE)
···
 	if (einfo->operation & IPT_ECN_OP_SET_CWR)
 		tcph->cwr = einfo->proto.tcp.cwr;
 
-	nf_proto_csum_replace2(&tcph->check, *pskb,
+	nf_proto_csum_replace2(&tcph->check, skb,
 				oldval, ((__be16 *)tcph)[6], 0);
 	return true;
 }
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
 	const struct ipt_ECN_info *einfo = targinfo;
 
 	if (einfo->operation & IPT_ECN_OP_SET_IP)
-		if (!set_ect_ip(pskb, einfo))
+		if (!set_ect_ip(skb, einfo))
 			return NF_DROP;
 
 	if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR)
-	    && ip_hdr(*pskb)->protocol == IPPROTO_TCP)
-		if (!set_ect_tcp(pskb, einfo))
+	    && ip_hdr(skb)->protocol == IPPROTO_TCP)
+		if (!set_ect_tcp(skb, einfo))
 			return NF_DROP;
 
 	return XT_CONTINUE;

net/ipv4/netfilter/ipt_LOG.c

···
 }
 
 static unsigned int
-ipt_log_target(struct sk_buff **pskb,
+ipt_log_target(struct sk_buff *skb,
 	       const struct net_device *in,
 	       const struct net_device *out,
 	       unsigned int hooknum,
···
 	li.u.log.level = loginfo->level;
 	li.u.log.logflags = loginfo->logflags;
 
-	ipt_log_packet(PF_INET, hooknum, *pskb, in, out, &li,
+	ipt_log_packet(PF_INET, hooknum, skb, in, out, &li,
 		       loginfo->prefix);
 	return XT_CONTINUE;
 }

net/ipv4/netfilter/ipt_MASQUERADE.c

···
 }
 
 static unsigned int
-masquerade_target(struct sk_buff **pskb,
+masquerade_target(struct sk_buff *skb,
 		  const struct net_device *in,
 		  const struct net_device *out,
 		  unsigned int hooknum,
···
 
 	NF_CT_ASSERT(hooknum == NF_IP_POST_ROUTING);
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	nat = nfct_nat(ct);
 
 	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED
···
 		return NF_ACCEPT;
 
 	mr = targinfo;
-	rt = (struct rtable *)(*pskb)->dst;
+	rt = (struct rtable *)skb->dst;
 	newsrc = inet_select_addr(out, rt->rt_gateway, RT_SCOPE_UNIVERSE);
 	if (!newsrc) {
 		printk("MASQUERADE: %s ate my IP address\n", out->name);

net/ipv4/netfilter/ipt_NETMAP.c

···
 }
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
 	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING
 		     || hooknum == NF_IP_POST_ROUTING
 		     || hooknum == NF_IP_LOCAL_OUT);
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	netmask = ~(mr->range[0].min_ip ^ mr->range[0].max_ip);
 
 	if (hooknum == NF_IP_PRE_ROUTING || hooknum == NF_IP_LOCAL_OUT)
-		new_ip = ip_hdr(*pskb)->daddr & ~netmask;
+		new_ip = ip_hdr(skb)->daddr & ~netmask;
 	else
-		new_ip = ip_hdr(*pskb)->saddr & ~netmask;
+		new_ip = ip_hdr(skb)->saddr & ~netmask;
 	new_ip |= mr->range[0].min_ip & netmask;
 
 	newrange = ((struct nf_nat_range)

net/ipv4/netfilter/ipt_REDIRECT.c

···
 }
 
 static unsigned int
-redirect_target(struct sk_buff **pskb,
+redirect_target(struct sk_buff *skb,
 		const struct net_device *in,
 		const struct net_device *out,
 		unsigned int hooknum,
···
 	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING
 		     || hooknum == NF_IP_LOCAL_OUT);
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
 
 	/* Local packets: make them go to loopback */
···
 		newdst = 0;
 
 		rcu_read_lock();
-		indev = __in_dev_get_rcu((*pskb)->dev);
+		indev = __in_dev_get_rcu(skb->dev);
 		if (indev && (ifa = indev->ifa_list))
 			newdst = ifa->ifa_local;
 		rcu_read_unlock();

net/ipv4/netfilter/ipt_REJECT.c

···
 	   )
 		addr_type = RTN_LOCAL;
 
-	if (ip_route_me_harder(&nskb, addr_type))
+	if (ip_route_me_harder(nskb, addr_type))
 		goto free_nskb;
 
 	nskb->ip_summed = CHECKSUM_NONE;
···
 	icmp_send(skb_in, ICMP_DEST_UNREACH, code, 0);
 }
 
-static unsigned int reject(struct sk_buff **pskb,
+static unsigned int reject(struct sk_buff *skb,
 			   const struct net_device *in,
 			   const struct net_device *out,
 			   unsigned int hooknum,
···
 
 	/* Our naive response construction doesn't deal with IP
 	   options, and probably shouldn't try. */
-	if (ip_hdrlen(*pskb) != sizeof(struct iphdr))
+	if (ip_hdrlen(skb) != sizeof(struct iphdr))
 		return NF_DROP;
 
 	/* WARNING: This code causes reentry within iptables.
···
 	   must return an absolute verdict. --RR */
 	switch (reject->with) {
 	case IPT_ICMP_NET_UNREACHABLE:
-		send_unreach(*pskb, ICMP_NET_UNREACH);
+		send_unreach(skb, ICMP_NET_UNREACH);
 		break;
 	case IPT_ICMP_HOST_UNREACHABLE:
-		send_unreach(*pskb, ICMP_HOST_UNREACH);
+		send_unreach(skb, ICMP_HOST_UNREACH);
 		break;
 	case IPT_ICMP_PROT_UNREACHABLE:
-		send_unreach(*pskb, ICMP_PROT_UNREACH);
+		send_unreach(skb, ICMP_PROT_UNREACH);
 		break;
 	case IPT_ICMP_PORT_UNREACHABLE:
-		send_unreach(*pskb, ICMP_PORT_UNREACH);
+		send_unreach(skb, ICMP_PORT_UNREACH);
 		break;
 	case IPT_ICMP_NET_PROHIBITED:
-		send_unreach(*pskb, ICMP_NET_ANO);
+		send_unreach(skb, ICMP_NET_ANO);
 		break;
 	case IPT_ICMP_HOST_PROHIBITED:
-		send_unreach(*pskb, ICMP_HOST_ANO);
+		send_unreach(skb, ICMP_HOST_ANO);
 		break;
 	case IPT_ICMP_ADMIN_PROHIBITED:
-		send_unreach(*pskb, ICMP_PKT_FILTERED);
+		send_unreach(skb, ICMP_PKT_FILTERED);
 		break;
 	case IPT_TCP_RESET:
-		send_reset(*pskb, hooknum);
+		send_reset(skb, hooknum);
 	case IPT_ICMP_ECHOREPLY:
 		/* Doesn't happen. */
 		break;

net/ipv4/netfilter/ipt_SAME.c

···
 }
 
 static unsigned int
-same_target(struct sk_buff **pskb,
+same_target(struct sk_buff *skb,
 		const struct net_device *in,
 		const struct net_device *out,
 		unsigned int hooknum,
···
 
 	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING ||
 			hooknum == NF_IP_POST_ROUTING);
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
 

net/ipv4/netfilter/ipt_TOS.c

···
 MODULE_DESCRIPTION("iptables TOS mangling module");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
        const void *targinfo)
 {
 	const struct ipt_tos_target_info *tosinfo = targinfo;
-	struct iphdr *iph = ip_hdr(*pskb);
+	struct iphdr *iph = ip_hdr(skb);
 
 	if ((iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
 		__u8 oldtos;
-		if (!skb_make_writable(pskb, sizeof(struct iphdr)))
+		if (!skb_make_writable(skb, sizeof(struct iphdr)))
 			return NF_DROP;
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 		oldtos = iph->tos;
 		iph->tos = (iph->tos & IPTOS_PREC_MASK) | tosinfo->tos;
 		nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));

net/ipv4/netfilter/ipt_TTL.c

···
 MODULE_LICENSE("GPL");
 
 static unsigned int
-ipt_ttl_target(struct sk_buff **pskb,
+ipt_ttl_target(struct sk_buff *skb,
 	       const struct net_device *in, const struct net_device *out,
 	       unsigned int hooknum, const struct xt_target *target,
 	       const void *targinfo)
···
 	const struct ipt_TTL_info *info = targinfo;
 	int new_ttl;
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return NF_DROP;
 
-	iph = ip_hdr(*pskb);
+	iph = ip_hdr(skb);
 
 	switch (info->mode) {
 		case IPT_TTL_SET:

net/ipv4/netfilter/ipt_ULOG.c

···
 	spin_unlock_bh(&ulog_lock);
 }
 
-static unsigned int ipt_ulog_target(struct sk_buff **pskb,
+static unsigned int ipt_ulog_target(struct sk_buff *skb,
 				    const struct net_device *in,
 				    const struct net_device *out,
 				    unsigned int hooknum,
···
 {
 	struct ipt_ulog_info *loginfo = (struct ipt_ulog_info *) targinfo;
 
-	ipt_ulog_packet(hooknum, *pskb, in, out, loginfo, NULL);
+	ipt_ulog_packet(hooknum, skb, in, out, loginfo, NULL);
 
 	return XT_CONTINUE;
 }

net/ipv4/netfilter/iptable_filter.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ipt_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ipt_do_table(pskb, hook, in, out, &packet_filter);
+	return ipt_do_table(skb, hook, in, out, &packet_filter);
 }
 
 static unsigned int
 ipt_local_out_hook(unsigned int hook,
-		   struct sk_buff **pskb,
+		   struct sk_buff *skb,
 		   const struct net_device *in,
 		   const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
 {
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr)
-	    || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr) ||
+	    ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("iptable_filter: ignoring short SOCK_RAW "
 			       "packet.\n");
 		return NF_ACCEPT;
 	}
 
-	return ipt_do_table(pskb, hook, in, out, &packet_filter);
+	return ipt_do_table(skb, hook, in, out, &packet_filter);
 }
 
 static struct nf_hook_ops ipt_ops[] = {

net/ipv4/netfilter/iptable_mangle.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ipt_route_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ipt_do_table(pskb, hook, in, out, &packet_mangler);
+	return ipt_do_table(skb, hook, in, out, &packet_mangler);
 }
 
 static unsigned int
 ipt_local_hook(unsigned int hook,
-		   struct sk_buff **pskb,
+		   struct sk_buff *skb,
 		   const struct net_device *in,
 		   const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
···
 	u_int32_t mark;
 
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr)
-	    || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr)
+	    || ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("iptable_mangle: ignoring short SOCK_RAW "
 			       "packet.\n");
···
 	}
 
 	/* Save things which could affect route */
-	mark = (*pskb)->mark;
-	iph = ip_hdr(*pskb);
+	mark = skb->mark;
+	iph = ip_hdr(skb);
 	saddr = iph->saddr;
 	daddr = iph->daddr;
 	tos = iph->tos;
 
-	ret = ipt_do_table(pskb, hook, in, out, &packet_mangler);
+	ret = ipt_do_table(skb, hook, in, out, &packet_mangler);
 	/* Reroute for ANY change. */
 	if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) {
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 
 		if (iph->saddr != saddr ||
 		    iph->daddr != daddr ||
-		    (*pskb)->mark != mark ||
+		    skb->mark != mark ||
 		    iph->tos != tos)
-			if (ip_route_me_harder(pskb, RTN_UNSPEC))
+			if (ip_route_me_harder(skb, RTN_UNSPEC))
 				ret = NF_DROP;
 	}
 

net/ipv4/netfilter/iptable_raw.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ipt_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ipt_do_table(pskb, hook, in, out, &packet_raw);
+	return ipt_do_table(skb, hook, in, out, &packet_raw);
 }
 
 static unsigned int
 ipt_local_hook(unsigned int hook,
-	       struct sk_buff **pskb,
+	       struct sk_buff *skb,
 	       const struct net_device *in,
 	       const struct net_device *out,
 	       int (*okfn)(struct sk_buff *))
 {
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr) ||
-	    ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr) ||
+	    ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("iptable_raw: ignoring short SOCK_RAW"
 			       "packet.\n");
 		return NF_ACCEPT;
 	}
-	return ipt_do_table(pskb, hook, in, out, &packet_raw);
+	return ipt_do_table(skb, hook, in, out, &packet_raw);
 }
 
 /* 'raw' is the very first table. */

net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c

···
 }
 
 /* Returns new sk_buff, or NULL */
-static struct sk_buff *
-nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
+static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
 {
+	int err;
+
 	skb_orphan(skb);
 
 	local_bh_disable();
-	skb = ip_defrag(skb, user);
+	err = ip_defrag(skb, user);
 	local_bh_enable();
 
-	if (skb)
+	if (!err)
 		ip_send_check(ip_hdr(skb));
 
-	return skb;
+	return err;
 }
 
 static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
···
 }
 
 static unsigned int ipv4_confirm(unsigned int hooknum,
-				 struct sk_buff **pskb,
+				 struct sk_buff *skb,
 				 const struct net_device *in,
 				 const struct net_device *out,
 				 int (*okfn)(struct sk_buff *))
 {
 	/* We've seen it coming out the other side: confirm it */
-	return nf_conntrack_confirm(pskb);
+	return nf_conntrack_confirm(skb);
 }
 
 static unsigned int ipv4_conntrack_help(unsigned int hooknum,
-				      struct sk_buff **pskb,
+				      struct sk_buff *skb,
 				      const struct net_device *in,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
···
 	struct nf_conntrack_helper *helper;
 
 	/* This is where we call the helper: as the packet goes out. */
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)
 		return NF_ACCEPT;
 
···
 	helper = rcu_dereference(help->helper);
 	if (!helper)
 		return NF_ACCEPT;
-	return helper->help(pskb, skb_network_offset(*pskb) + ip_hdrlen(*pskb),
+	return helper->help(skb, skb_network_offset(skb) + ip_hdrlen(skb),
 			    ct, ctinfo);
 }
 
 static unsigned int ipv4_conntrack_defrag(unsigned int hooknum,
-					  struct sk_buff **pskb,
+					  struct sk_buff *skb,
 					  const struct net_device *in,
 					  const struct net_device *out,
 					  int (*okfn)(struct sk_buff *))
 {
 	/* Previously seen (loopback)?  Ignore.  Do this before
 	   fragment check. */
-	if ((*pskb)->nfct)
+	if (skb->nfct)
 		return NF_ACCEPT;
 
 	/* Gather fragments. */
-	if (ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-		*pskb = nf_ct_ipv4_gather_frags(*pskb,
-						hooknum == NF_IP_PRE_ROUTING ?
-						IP_DEFRAG_CONNTRACK_IN :
-						IP_DEFRAG_CONNTRACK_OUT);
-		if (!*pskb)
+	if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
+		if (nf_ct_ipv4_gather_frags(skb,
+					    hooknum == NF_IP_PRE_ROUTING ?
+					    IP_DEFRAG_CONNTRACK_IN :
+					    IP_DEFRAG_CONNTRACK_OUT))
 			return NF_STOLEN;
 	}
 	return NF_ACCEPT;
 }
 
 static unsigned int ipv4_conntrack_in(unsigned int hooknum,
-				      struct sk_buff **pskb,
+				      struct sk_buff *skb,
 				      const struct net_device *in,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
-	return nf_conntrack_in(PF_INET, hooknum, pskb);
+	return nf_conntrack_in(PF_INET, hooknum, skb);
 }
 
 static unsigned int ipv4_conntrack_local(unsigned int hooknum,
-					 struct sk_buff **pskb,
+					 struct sk_buff *skb,
 					 const struct net_device *in,
 					 const struct net_device *out,
 					 int (*okfn)(struct sk_buff *))
 {
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr)
-	    || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr) ||
+	    ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("ipt_hook: happy cracking.\n");
 		return NF_ACCEPT;
 	}
-	return nf_conntrack_in(PF_INET, hooknum, pskb);
+	return nf_conntrack_in(PF_INET, hooknum, skb);
 }
 
 /* Connection tracking may drop packets, but never alters them, so

net/ipv4/netfilter/nf_nat_amanda.c

···
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_nat_amanda");
 
-static unsigned int help(struct sk_buff **pskb,
+static unsigned int help(struct sk_buff *skb,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned int matchoff,
 			 unsigned int matchlen,
···
 		return NF_DROP;
 
 	sprintf(buffer, "%u", port);
-	ret = nf_nat_mangle_udp_packet(pskb, exp->master, ctinfo,
+	ret = nf_nat_mangle_udp_packet(skb, exp->master, ctinfo,
 				       matchoff, matchlen,
 				       buffer, strlen(buffer));
 	if (ret != NF_ACCEPT)

net/ipv4/netfilter/nf_nat_core.c

···
 /* Returns true if succeeded. */
 static int
 manip_pkt(u_int16_t proto,
-	  struct sk_buff **pskb,
+	  struct sk_buff *skb,
 	  unsigned int iphdroff,
 	  const struct nf_conntrack_tuple *target,
 	  enum nf_nat_manip_type maniptype)
···
 	struct iphdr *iph;
 	struct nf_nat_protocol *p;
 
-	if (!skb_make_writable(pskb, iphdroff + sizeof(*iph)))
+	if (!skb_make_writable(skb, iphdroff + sizeof(*iph)))
 		return 0;
 
-	iph = (void *)(*pskb)->data + iphdroff;
+	iph = (void *)skb->data + iphdroff;
 
 	/* Manipulate protcol part. */
 
 	/* rcu_read_lock()ed by nf_hook_slow */
 	p = __nf_nat_proto_find(proto);
-	if (!p->manip_pkt(pskb, iphdroff, target, maniptype))
+	if (!p->manip_pkt(skb, iphdroff, target, maniptype))
 		return 0;
 
-	iph = (void *)(*pskb)->data + iphdroff;
+	iph = (void *)skb->data + iphdroff;
 
 	if (maniptype == IP_NAT_MANIP_SRC) {
 		nf_csum_replace4(&iph->check, iph->saddr, target->src.u3.ip);
···
 unsigned int nf_nat_packet(struct nf_conn *ct,
 			   enum ip_conntrack_info ctinfo,
 			   unsigned int hooknum,
-			   struct sk_buff **pskb)
+			   struct sk_buff *skb)
 {
 	enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 	unsigned long statusbit;
···
 		/* We are aiming to look like inverse of other direction. */
 		nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
 
-		if (!manip_pkt(target.dst.protonum, pskb, 0, &target, mtype))
+		if (!manip_pkt(target.dst.protonum, skb, 0, &target, mtype))
 			return NF_DROP;
 	}
 	return NF_ACCEPT;
···
 int nf_nat_icmp_reply_translation(struct nf_conn *ct,
 				  enum ip_conntrack_info ctinfo,
 				  unsigned int hooknum,
-				  struct sk_buff **pskb)
+				  struct sk_buff *skb)
 {
 	struct {
 		struct icmphdr icmp;
···
 	} *inside;
 	struct nf_conntrack_l4proto *l4proto;
 	struct nf_conntrack_tuple inner, target;
-	int hdrlen = ip_hdrlen(*pskb);
+	int hdrlen = ip_hdrlen(skb);
 	enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 	unsigned long statusbit;
 	enum nf_nat_manip_type manip = HOOK2MANIP(hooknum);
 
-	if (!skb_make_writable(pskb, hdrlen + sizeof(*inside)))
+	if (!skb_make_writable(skb, hdrlen + sizeof(*inside)))
 		return 0;
 
-	inside = (void *)(*pskb)->data + ip_hdrlen(*pskb);
+	inside = (void *)skb->data + ip_hdrlen(skb);
 
 	/* We're actually going to mangle it beyond trivial checksum
 	   adjustment, so make sure the current checksum is correct. */
-	if (nf_ip_checksum(*pskb, hooknum, hdrlen, 0))
+	if (nf_ip_checksum(skb, hooknum, hdrlen, 0))
 		return 0;
 
 	/* Must be RELATED */
-	NF_CT_ASSERT((*pskb)->nfctinfo == IP_CT_RELATED ||
-		     (*pskb)->nfctinfo == IP_CT_RELATED+IP_CT_IS_REPLY);
+	NF_CT_ASSERT(skb->nfctinfo == IP_CT_RELATED ||
+		     skb->nfctinfo == IP_CT_RELATED+IP_CT_IS_REPLY);
 
 	/* Redirects on non-null nats must be dropped, else they'll
 	   start talking to each other without our translation, and be
···
 	}
 
 	pr_debug("icmp_reply_translation: translating error %p manip %u "
-		 "dir %s\n", *pskb, manip,
+		 "dir %s\n", skb, manip,
 		 dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY");
 
 	/* rcu_read_lock()ed by nf_hook_slow */
 	l4proto = __nf_ct_l4proto_find(PF_INET, inside->ip.protocol);
 
-	if (!nf_ct_get_tuple(*pskb,
-			     ip_hdrlen(*pskb) + sizeof(struct icmphdr),
-			     (ip_hdrlen(*pskb) +
+	if (!nf_ct_get_tuple(skb,
+			     ip_hdrlen(skb) + sizeof(struct icmphdr),
+			     (ip_hdrlen(skb) +
 			      sizeof(struct icmphdr) + inside->ip.ihl * 4),
 			     (u_int16_t)AF_INET,
 			     inside->ip.protocol,
···
 	   pass all hooks (locally-generated ICMP).  Consider incoming
 	   packet: PREROUTING (DST manip), routing produces ICMP, goes
 	   through POSTROUTING (which must correct the DST manip). */
-	if (!manip_pkt(inside->ip.protocol, pskb,
-		       ip_hdrlen(*pskb) + sizeof(inside->icmp),
+	if (!manip_pkt(inside->ip.protocol, skb,
+		       ip_hdrlen(skb) + sizeof(inside->icmp),
 		       &ct->tuplehash[!dir].tuple,
 		       !manip))
 		return 0;
 
-	if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		/* Reloading "inside" here since manip_pkt inner. */
-		inside = (void *)(*pskb)->data + ip_hdrlen(*pskb);
+		inside = (void *)skb->data + ip_hdrlen(skb);
 		inside->icmp.checksum = 0;
 		inside->icmp.checksum =
-			csum_fold(skb_checksum(*pskb, hdrlen,
-					       (*pskb)->len - hdrlen, 0));
+			csum_fold(skb_checksum(skb, hdrlen,
+					       skb->len - hdrlen, 0));
 	}
 
 	/* Change outer to look the reply to an incoming packet
···
 
 	if (ct->status & statusbit) {
 		nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
-		if (!manip_pkt(0, pskb, 0, &target, manip))
+		if (!manip_pkt(0, skb, 0, &target, manip))
 			return 0;
 	}
 

net/ipv4/netfilter/nf_nat_ftp.c

···
 /* FIXME: Time out? --RR */
 
 static int
-mangle_rfc959_packet(struct sk_buff **pskb,
+mangle_rfc959_packet(struct sk_buff *skb,
 		     __be32 newip,
 		     u_int16_t port,
 		     unsigned int matchoff,
···
 
 	pr_debug("calling nf_nat_mangle_tcp_packet\n");
 
-	return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
+	return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
 					matchlen, buffer, strlen(buffer));
 }
 
 /* |1|132.235.1.2|6275| */
 static int
-mangle_eprt_packet(struct sk_buff **pskb,
+mangle_eprt_packet(struct sk_buff *skb,
 		   __be32 newip,
 		   u_int16_t port,
 		   unsigned int matchoff,
···
 
 	pr_debug("calling nf_nat_mangle_tcp_packet\n");
 
-	return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
+	return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
 					matchlen, buffer, strlen(buffer));
 }
 
 /* |1|132.235.1.2|6275| */
 static int
-mangle_epsv_packet(struct sk_buff **pskb,
+mangle_epsv_packet(struct sk_buff *skb,
 		   __be32 newip,
 		   u_int16_t port,
 		   unsigned int matchoff,
···
 
 	pr_debug("calling nf_nat_mangle_tcp_packet\n");
 
-	return nf_nat_mangle_tcp_packet(pskb, ct, ctinfo, matchoff,
+	return nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
 					matchlen, buffer, strlen(buffer));
 }
 
-static int (*mangle[])(struct sk_buff **, __be32, u_int16_t,
+static int (*mangle[])(struct sk_buff *, __be32, u_int16_t,
 		       unsigned int, unsigned int, struct nf_conn *,
 		       enum ip_conntrack_info)
 = {
···
 
 /* So, this packet has hit the connection tracking matching code.
    Mangle it, and change the expectation to match the new version. */
-static unsigned int nf_nat_ftp(struct sk_buff **pskb,
+static unsigned int nf_nat_ftp(struct sk_buff *skb,
 			       enum ip_conntrack_info ctinfo,
 			       enum nf_ct_ftp_type type,
 			       unsigned int matchoff,
···
 	if (port == 0)
 		return NF_DROP;
 
-	if (!mangle[type](pskb, newip, port, matchoff, matchlen, ct, ctinfo)) {
+	if (!mangle[type](skb, newip, port, matchoff, matchlen, ct, ctinfo)) {
 		nf_ct_unexpect_related(exp);
 		return NF_DROP;
 	}

net/ipv4/netfilter/nf_nat_h323.c

···
 #include <linux/netfilter/nf_conntrack_h323.h>
 
 /****************************************************************************/
-static int set_addr(struct sk_buff **pskb,
+static int set_addr(struct sk_buff *skb,
 		    unsigned char **data, int dataoff,
 		    unsigned int addroff, __be32 ip, __be16 port)
 {
 	enum ip_conntrack_info ctinfo;
-	struct nf_conn *ct = nf_ct_get(*pskb, &ctinfo);
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
 	struct {
 		__be32 ip;
 		__be16 port;
···
 	buf.port = port;
 	addroff += dataoff;
 
-	if (ip_hdr(*pskb)->protocol == IPPROTO_TCP) {
-		if (!nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+	if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
+		if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
 					      addroff, sizeof(buf),
 					      (char *) &buf, sizeof(buf))) {
 			if (net_ratelimit())
···
 		}
 
 		/* Relocate data pointer */
-		th = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
+		th = skb_header_pointer(skb, ip_hdrlen(skb),
 					sizeof(_tcph), &_tcph);
 		if (th == NULL)
 			return -1;
-		*data = (*pskb)->data + ip_hdrlen(*pskb) +
-		    th->doff * 4 + dataoff;
+		*data = skb->data + ip_hdrlen(skb) + th->doff * 4 + dataoff;
 	} else {
-		if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo,
+		if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
 					      addroff, sizeof(buf),
 					      (char *) &buf, sizeof(buf))) {
 			if (net_ratelimit())
···
 		/* nf_nat_mangle_udp_packet uses skb_make_writable() to copy
 		 * or pull everything in a linear buffer, so we can safely
 		 * use the skb pointers now */
-		*data = ((*pskb)->data + ip_hdrlen(*pskb) +
-			 sizeof(struct udphdr));
+		*data = skb->data + ip_hdrlen(skb) + sizeof(struct udphdr);
 	}
 
 	return 0;
 }
 
 /****************************************************************************/
-static int set_h225_addr(struct sk_buff **pskb,
+static int set_h225_addr(struct sk_buff *skb,
 			 unsigned char **data, int dataoff,
 			 TransportAddress *taddr,
 			 union nf_conntrack_address *addr, __be16 port)
 {
-	return set_addr(pskb, data, dataoff, taddr->ipAddress.ip,
+	return set_addr(skb, data, dataoff, taddr->ipAddress.ip,
 			addr->ip, port);
 }
 
 /****************************************************************************/
-static int set_h245_addr(struct sk_buff **pskb,
+static int set_h245_addr(struct sk_buff *skb,
 			 unsigned char **data, int dataoff,
 			 H245_TransportAddress *taddr,
 			 union nf_conntrack_address *addr, __be16 port)
 {
-	return set_addr(pskb, data, dataoff,
+	return set_addr(skb, data, dataoff,
 			taddr->unicastAddress.iPAddress.network,
 			addr->ip, port);
 }
 
 /****************************************************************************/
-static int set_sig_addr(struct sk_buff **pskb, struct nf_conn *ct,
+static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data,
 			TransportAddress *taddr, int count)
···
 					 NIPQUAD(addr.ip), port,
 					 NIPQUAD(ct->tuplehash[!dir].tuple.dst.u3.ip),
 					 info->sig_port[!dir]);
-				return set_h225_addr(pskb, data, 0, &taddr[i],
+				return set_h225_addr(skb, data, 0, &taddr[i],
 						     &ct->tuplehash[!dir].
 						     tuple.dst.u3,
 						     info->sig_port[!dir]);
···
 					 NIPQUAD(addr.ip), port,
 					 NIPQUAD(ct->tuplehash[!dir].tuple.src.u3.ip),
 					 info->sig_port[!dir]);
-				return set_h225_addr(pskb, data, 0, &taddr[i],
+				return set_h225_addr(skb, data, 0, &taddr[i],
 						     &ct->tuplehash[!dir].
 						     tuple.src.u3,
 						     info->sig_port[!dir]);
···
 }
 
 /****************************************************************************/
-static int set_ras_addr(struct sk_buff **pskb, struct nf_conn *ct,
+static int set_ras_addr(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data,
 			TransportAddress *taddr, int count)
···
 				 NIPQUAD(addr.ip), ntohs(port),
 				 NIPQUAD(ct->tuplehash[!dir].tuple.dst.u3.ip),
 				 ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port));
-			return set_h225_addr(pskb, data, 0, &taddr[i],
+			return set_h225_addr(skb, data, 0, &taddr[i],
 					     &ct->tuplehash[!dir].tuple.dst.u3,
 					     ct->tuplehash[!dir].tuple.
 								dst.u.udp.port);
···
 }
 
 /****************************************************************************/
-static int nat_rtp_rtcp(struct sk_buff **pskb, struct nf_conn *ct,
+static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data, int dataoff,
 			H245_TransportAddress *taddr,
···
 	}
 
 	/* Modify signal */
-	if (set_h245_addr(pskb, data, dataoff, taddr,
+	if (set_h245_addr(skb, data, dataoff, taddr,
 			  &ct->tuplehash[!dir].tuple.dst.u3,
 			  htons((port & htons(1)) ? nated_port + 1 :
 						    nated_port)) == 0) {
···
 }
 
 /****************************************************************************/
-static int nat_t120(struct sk_buff **pskb, struct nf_conn *ct,
+static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
 		    enum ip_conntrack_info ctinfo,
 		    unsigned char **data, int dataoff,
 		    H245_TransportAddress *taddr, __be16 port,
···
 	}
 
 	/* Modify signal */
-	if (set_h245_addr(pskb, data, dataoff, taddr,
+	if (set_h245_addr(skb, data, dataoff, taddr,
 			  &ct->tuplehash[!dir].tuple.dst.u3,
 			  htons(nated_port)) < 0) {
 		nf_ct_unexpect_related(exp);
···
 }
 
 /****************************************************************************/
-static int nat_h245(struct sk_buff **pskb, struct nf_conn *ct,
+static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
 		    enum ip_conntrack_info ctinfo,
 		    unsigned char **data, int dataoff,
 		    TransportAddress *taddr, __be16 port,
···
 	}
 
 	/* Modify signal */
-	if (set_h225_addr(pskb, data, dataoff, taddr,
+	if (set_h225_addr(skb, data, dataoff, taddr,
 			  &ct->tuplehash[!dir].tuple.dst.u3,
 			  htons(nated_port)) == 0) {
 		/* Save ports */
···
 }
 
 /****************************************************************************/
-static int nat_q931(struct sk_buff **pskb, struct nf_conn *ct,
+static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
 		    enum ip_conntrack_info ctinfo,
 		    unsigned char **data, TransportAddress *taddr, int idx,
 		    __be16 port, struct nf_conntrack_expect *exp)
···
 	}
 
 	/* Modify signal */
-	if (set_h225_addr(pskb, data, 0, &taddr[idx],
+	if (set_h225_addr(skb, data, 0, &taddr[idx],
 			  &ct->tuplehash[!dir].tuple.dst.u3,
 			  htons(nated_port)) == 0) {
 		/* Save ports */
···
 		if (idx > 0 &&
 		    get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
 		    (ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
-			set_h225_addr(pskb, data, 0, &taddr[0],
+			set_h225_addr(skb, data, 0, &taddr[0],
 				      &ct->tuplehash[!dir].tuple.dst.u3,
 				      info->sig_port[!dir]);
 		}
···
 }
 
 /****************************************************************************/
-static int nat_callforwarding(struct sk_buff **pskb, struct nf_conn *ct,
+static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
 			      enum ip_conntrack_info ctinfo,
 			      unsigned char **data, int dataoff,
 			      TransportAddress *taddr, __be16 port,
···
 	}
 
 	/* Modify signal */
-	if (!set_h225_addr(pskb, data, dataoff, taddr,
+	if (!set_h225_addr(skb, data, dataoff, taddr,
 			   &ct->tuplehash[!dir].tuple.dst.u3,
 			   htons(nated_port)) == 0) {
 		nf_ct_unexpect_related(exp);

net/ipv4/netfilter/nf_nat_helper.c

···
 }
 
 /* Unusual, but possible case. */
-static int enlarge_skb(struct sk_buff **pskb, unsigned int extra)
+static int enlarge_skb(struct sk_buff *skb, unsigned int extra)
 {
-	struct sk_buff *nskb;
-
-	if ((*pskb)->len + extra > 65535)
+	if (skb->len + extra > 65535)
 		return 0;
 
-	nskb = skb_copy_expand(*pskb, skb_headroom(*pskb), extra, GFP_ATOMIC);
-	if (!nskb)
+	if (pskb_expand_head(skb, 0, extra - skb_tailroom(skb), GFP_ATOMIC))
 		return 0;
 
-	/* Transfer socket to new skb. */
-	if ((*pskb)->sk)
-		skb_set_owner_w(nskb, (*pskb)->sk);
-	kfree_skb(*pskb);
-	*pskb = nskb;
 	return 1;
 }
 
···
  *
  * */
 int
-nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
+nf_nat_mangle_tcp_packet(struct sk_buff *skb,
 			 struct nf_conn *ct,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned int match_offset,
···
 			 const char *rep_buffer,
 			 unsigned int rep_len)
 {
-	struct rtable *rt = (struct rtable *)(*pskb)->dst;
+	struct rtable *rt = (struct rtable *)skb->dst;
 	struct iphdr *iph;
 	struct tcphdr *tcph;
 	int oldlen, datalen;
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return 0;
 
 	if (rep_len > match_len &&
-	    rep_len - match_len > skb_tailroom(*pskb) &&
-	    !enlarge_skb(pskb, rep_len - match_len))
+	    rep_len - match_len > skb_tailroom(skb) &&
+	    !enlarge_skb(skb, rep_len - match_len))
 		return 0;
 
-	SKB_LINEAR_ASSERT(*pskb);
+	SKB_LINEAR_ASSERT(skb);
 
-	iph = ip_hdr(*pskb);
+	iph = ip_hdr(skb);
 	tcph = (void *)iph + iph->ihl*4;
 
-	oldlen = (*pskb)->len - iph->ihl*4;
-	mangle_contents(*pskb, iph->ihl*4 + tcph->doff*4,
+	oldlen = skb->len - iph->ihl*4;
+	mangle_contents(skb, iph->ihl*4 + tcph->doff*4,
 			match_offset, match_len, rep_buffer, rep_len);
 
-	datalen = (*pskb)->len - iph->ihl*4;
-	if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
+	datalen = skb->len - iph->ihl*4;
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		if (!(rt->rt_flags & RTCF_LOCAL) &&
-		    (*pskb)->dev->features & NETIF_F_V4_CSUM) {
-			(*pskb)->ip_summed = CHECKSUM_PARTIAL;
-			(*pskb)->csum_start = skb_headroom(*pskb) +
-					      skb_network_offset(*pskb) +
-					      iph->ihl * 4;
-			(*pskb)->csum_offset = offsetof(struct tcphdr, check);
+		    skb->dev->features & NETIF_F_V4_CSUM) {
+			skb->ip_summed = CHECKSUM_PARTIAL;
+			skb->csum_start = skb_headroom(skb) +
+					  skb_network_offset(skb) +
+					  iph->ihl * 4;
+			skb->csum_offset = offsetof(struct tcphdr, check);
 			tcph->check = ~tcp_v4_check(datalen,
 						    iph->saddr, iph->daddr, 0);
 		} else {
···
 								datalen, 0));
 		}
 	} else
-		nf_proto_csum_replace2(&tcph->check, *pskb,
+		nf_proto_csum_replace2(&tcph->check, skb,
 				       htons(oldlen), htons(datalen), 1);
 
 	if (rep_len != match_len) {
···
 				    (int)rep_len - (int)match_len,
 				    ct, ctinfo);
 		/* Tell TCP window tracking about seq change */
-		nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb),
+		nf_conntrack_tcp_update(skb, ip_hdrlen(skb),
 					ct, CTINFO2DIR(ctinfo));
 	}
 	return 1;
···
  *       should be fairly easy to do.
  */
 int
-nf_nat_mangle_udp_packet(struct sk_buff **pskb,
+nf_nat_mangle_udp_packet(struct sk_buff *skb,
 			 struct nf_conn *ct,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned int match_offset,
···
 			 const char *rep_buffer,
 			 unsigned int rep_len)
 {
-	struct rtable *rt = (struct rtable *)(*pskb)->dst;
+	struct rtable *rt = (struct rtable *)skb->dst;
 	struct iphdr *iph;
 	struct udphdr *udph;
 	int datalen, oldlen;
 
 	/* UDP helpers might accidentally mangle the wrong packet */
-	iph = ip_hdr(*pskb);
-	if ((*pskb)->len < iph->ihl*4 + sizeof(*udph) +
+	iph = ip_hdr(skb);
+	if (skb->len < iph->ihl*4 + sizeof(*udph) +
 			       match_offset + match_len)
 		return 0;
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return 0;
 
 	if (rep_len > match_len &&
-	    rep_len - match_len > skb_tailroom(*pskb) &&
-	    !enlarge_skb(pskb, rep_len - match_len))
+	    rep_len - match_len > skb_tailroom(skb) &&
+	    !enlarge_skb(skb, rep_len - match_len))
 		return 0;
 
-	iph = ip_hdr(*pskb);
+	iph = ip_hdr(skb);
 	udph = (void *)iph + iph->ihl*4;
 
-	oldlen = (*pskb)->len - iph->ihl*4;
-	mangle_contents(*pskb, iph->ihl*4 + sizeof(*udph),
+	oldlen = skb->len - iph->ihl*4;
+	mangle_contents(skb, iph->ihl*4 + sizeof(*udph),
 			match_offset, match_len, rep_buffer, rep_len);
 
 	/* update the length of the UDP packet */
-	datalen = (*pskb)->len - iph->ihl*4;
+	datalen = skb->len - iph->ihl*4;
 	udph->len = htons(datalen);
 
 	/* fix udp checksum if udp checksum was previously calculated */
-	if (!udph->check && (*pskb)->ip_summed != CHECKSUM_PARTIAL)
+	if (!udph->check && skb->ip_summed != CHECKSUM_PARTIAL)
 		return 1;
 
-	if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
+	if (skb->ip_summed != CHECKSUM_PARTIAL) {
 		if (!(rt->rt_flags & RTCF_LOCAL) &&
-		    (*pskb)->dev->features & NETIF_F_V4_CSUM) {
-			(*pskb)->ip_summed = CHECKSUM_PARTIAL;
-			(*pskb)->csum_start = skb_headroom(*pskb) +
-					      skb_network_offset(*pskb) +
-					      iph->ihl * 4;
-			(*pskb)->csum_offset = offsetof(struct udphdr, check);
+		    skb->dev->features & NETIF_F_V4_CSUM) {
+			skb->ip_summed = CHECKSUM_PARTIAL;
+			skb->csum_start = skb_headroom(skb) +
+					  skb_network_offset(skb) +
+					  iph->ihl * 4;
+			skb->csum_offset = offsetof(struct udphdr, check);
 			udph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
 							 datalen, IPPROTO_UDP,
 							 0);
···
 				udph->check = CSUM_MANGLED_0;
 		}
 	} else
-		nf_proto_csum_replace2(&udph->check, *pskb,
+		nf_proto_csum_replace2(&udph->check, skb,
 				       htons(oldlen), htons(datalen), 1);
 
 	return 1;
···
 
 /* TCP SACK sequence number adjustment */
 static inline unsigned int
-nf_nat_sack_adjust(struct sk_buff **pskb,
+nf_nat_sack_adjust(struct sk_buff *skb,
 		   struct tcphdr *tcph,
 		   struct nf_conn *ct,
 		   enum ip_conntrack_info ctinfo)
···
 	unsigned int dir, optoff, optend;
 	struct nf_conn_nat *nat = nfct_nat(ct);
 
-	optoff = ip_hdrlen(*pskb) + sizeof(struct tcphdr);
-	optend = ip_hdrlen(*pskb) + tcph->doff * 4;
+	optoff = ip_hdrlen(skb) + sizeof(struct tcphdr);
+	optend = ip_hdrlen(skb) + tcph->doff * 4;
 
-	if (!skb_make_writable(pskb, optend))
+	if (!skb_make_writable(skb, optend))
 		return 0;
 
 	dir = CTINFO2DIR(ctinfo);
 
 	while (optoff < optend) {
 		/* Usually: option, length. */
-		unsigned char *op = (*pskb)->data + optoff;
+		unsigned char *op = skb->data + optoff;
 
 		switch (op[0]) {
 		case TCPOPT_EOL:
···
 			if (op[0] == TCPOPT_SACK &&
 			    op[1] >= 2+TCPOLEN_SACK_PERBLOCK &&
 			    ((op[1] - 2) % TCPOLEN_SACK_PERBLOCK) == 0)
-				sack_adjust(*pskb, tcph, optoff+2,
+				sack_adjust(skb, tcph, optoff+2,
 					    optoff+op[1], &nat->seq[!dir]);
 			optoff += op[1];
 		}
···
 
 /* TCP sequence number adjustment.  Returns 1 on success, 0 on failure */
 int
-nf_nat_seq_adjust(struct sk_buff **pskb,
+nf_nat_seq_adjust(struct sk_buff *skb,
 		  struct nf_conn *ct,
 		  enum ip_conntrack_info ctinfo)
 {
···
 	this_way = &nat->seq[dir];
 	other_way = &nat->seq[!dir];
 
-	if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
+	if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
 		return 0;
 
-	tcph = (void *)(*pskb)->data + ip_hdrlen(*pskb);
+	tcph = (void *)skb->data + ip_hdrlen(skb);
 	if (after(ntohl(tcph->seq), this_way->correction_pos))
 		newseq = htonl(ntohl(tcph->seq) + this_way->offset_after);
 	else
···
 	else
 		newack = htonl(ntohl(tcph->ack_seq) - other_way->offset_before);
 
-	nf_proto_csum_replace4(&tcph->check, *pskb, tcph->seq, newseq, 0);
-	nf_proto_csum_replace4(&tcph->check, *pskb, tcph->ack_seq, newack, 0);
+	nf_proto_csum_replace4(&tcph->check, skb, tcph->seq, newseq, 0);
+	nf_proto_csum_replace4(&tcph->check, skb, tcph->ack_seq, newack, 0);
 
 	pr_debug("Adjusting sequence number from %u->%u, ack from %u->%u\n",
 		 ntohl(tcph->seq), ntohl(newseq), ntohl(tcph->ack_seq),
···
 	tcph->seq = newseq;
 	tcph->ack_seq = newack;
 
-	if (!nf_nat_sack_adjust(pskb, tcph, ct, ctinfo))
+	if (!nf_nat_sack_adjust(skb, tcph, ct, ctinfo))
 		return 0;
 
-	nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb), ct, dir);
+	nf_conntrack_tcp_update(skb, ip_hdrlen(skb), ct, dir);
 
 	return 1;
 }

net/ipv4/netfilter/nf_nat_irc.c

···
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_nat_irc");
 
-static unsigned int help(struct sk_buff **pskb,
+static unsigned int help(struct sk_buff *skb,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned int matchoff,
 			 unsigned int matchlen,
···
 	pr_debug("nf_nat_irc: inserting '%s' == %u.%u.%u.%u, port %u\n",
 		 buffer, NIPQUAD(ip), port);
 
-	ret = nf_nat_mangle_tcp_packet(pskb, exp->master, ctinfo,
+	ret = nf_nat_mangle_tcp_packet(skb, exp->master, ctinfo,
 				       matchoff, matchlen, buffer,
 				       strlen(buffer));
 	if (ret != NF_ACCEPT)

net/ipv4/netfilter/nf_nat_pptp.c

···
 
 /* outbound packets == from PNS to PAC */
 static int
-pptp_outbound_pkt(struct sk_buff **pskb,
+pptp_outbound_pkt(struct sk_buff *skb,
 		  struct nf_conn *ct,
 		  enum ip_conntrack_info ctinfo,
 		  struct PptpControlHeader *ctlh,
···
 		 ntohs(REQ_CID(pptpReq, cid_off)), ntohs(new_callid));
 
 	/* mangle packet */
-	if (nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+	if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
 				     cid_off + sizeof(struct pptp_pkt_hdr) +
 				     sizeof(struct PptpControlHeader),
 				     sizeof(new_callid), (char *)&new_callid,
···
 
 /* inbound packets == from PAC to PNS */
 static int
-pptp_inbound_pkt(struct sk_buff **pskb,
+pptp_inbound_pkt(struct sk_buff *skb,
 		 struct nf_conn *ct,
 		 enum ip_conntrack_info ctinfo,
 		 struct PptpControlHeader *ctlh,
···
 	pr_debug("altering peer call id from 0x%04x to 0x%04x\n",
 		 ntohs(REQ_CID(pptpReq, pcid_off)), ntohs(new_pcid));
 
-	if (nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+	if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
 				     pcid_off + sizeof(struct pptp_pkt_hdr) +
 				     sizeof(struct PptpControlHeader),
 				     sizeof(new_pcid), (char *)&new_pcid,

net/ipv4/netfilter/nf_nat_proto_gre.c

···
 
 /* manipulate a GRE packet according to maniptype */
 static int
-gre_manip_pkt(struct sk_buff **pskb, unsigned int iphdroff,
+gre_manip_pkt(struct sk_buff *skb, unsigned int iphdroff,
 	      const struct nf_conntrack_tuple *tuple,
 	      enum nf_nat_manip_type maniptype)
 {
 	struct gre_hdr *greh;
 	struct gre_hdr_pptp *pgreh;
-	struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
+	struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
 	unsigned int hdroff = iphdroff + iph->ihl * 4;
 
 	/* pgreh includes two optional 32bit fields which are not required
 	 * to be there.  That's where the magic '8' comes from */
-	if (!skb_make_writable(pskb, hdroff + sizeof(*pgreh) - 8))
+	if (!skb_make_writable(skb, hdroff + sizeof(*pgreh) - 8))
 		return 0;
 
-	greh = (void *)(*pskb)->data + hdroff;
+	greh = (void *)skb->data + hdroff;
 	pgreh = (struct gre_hdr_pptp *)greh;
 
 	/* we only have destination manip of a packet, since 'source key'

net/ipv4/netfilter/nf_nat_proto_icmp.c

···
 }
 
 static int
-icmp_manip_pkt(struct sk_buff **pskb,
+icmp_manip_pkt(struct sk_buff *skb,
 	       unsigned int iphdroff,
 	       const struct nf_conntrack_tuple *tuple,
 	       enum nf_nat_manip_type maniptype)
 {
-	struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
+	struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
 	struct icmphdr *hdr;
 	unsigned int hdroff = iphdroff + iph->ihl*4;
 
-	if (!skb_make_writable(pskb, hdroff + sizeof(*hdr)))
+	if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
 		return 0;
 
-	hdr = (struct icmphdr *)((*pskb)->data + hdroff);
-	nf_proto_csum_replace2(&hdr->checksum, *pskb,
+	hdr = (struct icmphdr *)(skb->data + hdroff);
+	nf_proto_csum_replace2(&hdr->checksum, skb,
 			       hdr->un.echo.id, tuple->src.u.icmp.id, 0);
 	hdr->un.echo.id = tuple->src.u.icmp.id;
 	return 1;

net/ipv4/netfilter/nf_nat_proto_tcp.c

···
 }
 
 static int
-tcp_manip_pkt(struct sk_buff **pskb,
+tcp_manip_pkt(struct sk_buff *skb,
 	      unsigned int iphdroff,
 	      const struct nf_conntrack_tuple *tuple,
 	      enum nf_nat_manip_type maniptype)
 {
-	struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
+	struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
 	struct tcphdr *hdr;
 	unsigned int hdroff = iphdroff + iph->ihl*4;
 	__be32 oldip, newip;
···
 	/* this could be a inner header returned in icmp packet; in such
 	   cases we cannot update the checksum field since it is outside of
 	   the 8 bytes of transport layer headers we are guaranteed */
-	if ((*pskb)->len >= hdroff + sizeof(struct tcphdr))
+	if (skb->len >= hdroff + sizeof(struct tcphdr))
 		hdrsize = sizeof(struct tcphdr);
 
-	if (!skb_make_writable(pskb, hdroff + hdrsize))
+	if (!skb_make_writable(skb, hdroff + hdrsize))
 		return 0;
 
-	iph = (struct iphdr *)((*pskb)->data + iphdroff);
-	hdr = (struct tcphdr *)((*pskb)->data + hdroff);
+	iph = (struct iphdr *)(skb->data + iphdroff);
+	hdr = (struct tcphdr *)(skb->data + hdroff);
 
 	if (maniptype == IP_NAT_MANIP_SRC) {
 		/* Get rid of src ip and src pt */
···
 	if (hdrsize < sizeof(*hdr))
 		return 1;
 
-	nf_proto_csum_replace4(&hdr->check, *pskb, oldip, newip, 1);
-	nf_proto_csum_replace2(&hdr->check, *pskb, oldport, newport, 0);
+	nf_proto_csum_replace4(&hdr->check, skb, oldip, newip, 1);
+	nf_proto_csum_replace2(&hdr->check, skb, oldport, newport, 0);
 	return 1;
 }
 

net/ipv4/netfilter/nf_nat_proto_udp.c

···
 }
 
 static int
-udp_manip_pkt(struct sk_buff **pskb,
+udp_manip_pkt(struct sk_buff *skb,
 	      unsigned int iphdroff,
 	      const struct nf_conntrack_tuple *tuple,
 	      enum nf_nat_manip_type maniptype)
 {
-	struct iphdr *iph = (struct iphdr *)((*pskb)->data + iphdroff);
+	struct iphdr *iph = (struct iphdr *)(skb->data + iphdroff);
 	struct udphdr *hdr;
 	unsigned int hdroff = iphdroff + iph->ihl*4;
 	__be32 oldip, newip;
 	__be16 *portptr, newport;
 
-	if (!skb_make_writable(pskb, hdroff + sizeof(*hdr)))
+	if (!skb_make_writable(skb, hdroff + sizeof(*hdr)))
 		return 0;
 
-	iph = (struct iphdr *)((*pskb)->data + iphdroff);
-	hdr = (struct udphdr *)((*pskb)->data + hdroff);
+	iph = (struct iphdr *)(skb->data + iphdroff);
+	hdr = (struct udphdr *)(skb->data + hdroff);
 
 	if (maniptype == IP_NAT_MANIP_SRC) {
 		/* Get rid of src ip and src pt */
···
 		newport = tuple->dst.u.udp.port;
 		portptr = &hdr->dest;
 	}
-	if (hdr->check || (*pskb)->ip_summed == CHECKSUM_PARTIAL) {
-		nf_proto_csum_replace4(&hdr->check, *pskb, oldip, newip, 1);
-		nf_proto_csum_replace2(&hdr->check, *pskb, *portptr, newport,
+	if (hdr->check || skb->ip_summed == CHECKSUM_PARTIAL) {
+		nf_proto_csum_replace4(&hdr->check, skb, oldip, newip, 1);
+		nf_proto_csum_replace2(&hdr->check, skb, *portptr, newport,
 				       0);
 		if (!hdr->check)
 			hdr->check = CSUM_MANGLED_0;

net/ipv4/netfilter/nf_nat_proto_unknown.c

···
 }
 
 static int
-unknown_manip_pkt(struct sk_buff **pskb,
+unknown_manip_pkt(struct sk_buff *skb,
 		  unsigned int iphdroff,
 		  const struct nf_conntrack_tuple *tuple,
 		  enum nf_nat_manip_type maniptype)

net/ipv4/netfilter/nf_nat_rule.c

···
 };
 
 /* Source NAT */
-static unsigned int ipt_snat_target(struct sk_buff **pskb,
+static unsigned int ipt_snat_target(struct sk_buff *skb,
 				    const struct net_device *in,
 				    const struct net_device *out,
 				    unsigned int hooknum,
···
 
 	NF_CT_ASSERT(hooknum == NF_IP_POST_ROUTING);
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	/* Connection must be valid and new. */
 	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ||
···
 	ip_rt_put(rt);
 }
 
-static unsigned int ipt_dnat_target(struct sk_buff **pskb,
+static unsigned int ipt_dnat_target(struct sk_buff *skb,
 				    const struct net_device *in,
 				    const struct net_device *out,
 				    unsigned int hooknum,
···
 	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING ||
 		     hooknum == NF_IP_LOCAL_OUT);
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	/* Connection must be valid and new. */
 	NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
 
 	if (hooknum == NF_IP_LOCAL_OUT &&
 	    mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
-		warn_if_extra_mangle(ip_hdr(*pskb)->daddr,
+		warn_if_extra_mangle(ip_hdr(skb)->daddr,
 				     mr->range[0].min_ip);
 
 	return nf_nat_setup_info(ct, &mr->range[0], hooknum);
···
 	return nf_nat_setup_info(ct, &range, hooknum);
 }
 
-int nf_nat_rule_find(struct sk_buff **pskb,
+int nf_nat_rule_find(struct sk_buff *skb,
 		     unsigned int hooknum,
 		     const struct net_device *in,
 		     const struct net_device *out,
···
 {
 	int ret;
 
-	ret = ipt_do_table(pskb, hooknum, in, out, &nat_table);
+	ret = ipt_do_table(skb, hooknum, in, out, &nat_table);
 
 	if (ret == NF_ACCEPT) {
 		if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))

net/ipv4/netfilter/nf_nat_sip.c

···
 	}
 }
 
-static int map_sip_addr(struct sk_buff **pskb, enum ip_conntrack_info ctinfo,
+static int map_sip_addr(struct sk_buff *skb, enum ip_conntrack_info ctinfo,
 			struct nf_conn *ct, const char **dptr, size_t dlen,
 			enum sip_header_pos pos, struct addr_map *map)
 {
···
 	} else
 		return 1;
 
-	if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo,
+	if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
 				      matchoff, matchlen, addr, addrlen))
 		return 0;
-	*dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr);
+	*dptr = skb->data + ip_hdrlen(skb) + sizeof(struct udphdr);
 	return 1;
 
 }
 
-static unsigned int ip_nat_sip(struct sk_buff **pskb,
+static unsigned int ip_nat_sip(struct sk_buff *skb,
 			       enum ip_conntrack_info ctinfo,
 			       struct nf_conn *ct,
 			       const char **dptr)
···
 	struct addr_map map;
 	int dataoff, datalen;
 
-	dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
-	datalen = (*pskb)->len - dataoff;
+	dataoff = ip_hdrlen(skb) + sizeof(struct udphdr);
+	datalen = skb->len - dataoff;
 	if (datalen < sizeof("SIP/2.0") - 1)
 		return NF_ACCEPT;
 
···
 		else
 			pos = POS_REQ_URI;
 
-		if (!map_sip_addr(pskb, ctinfo, ct, dptr, datalen, pos, &map))
+		if (!map_sip_addr(skb, ctinfo, ct, dptr, datalen, pos, &map))
 			return NF_DROP;
 	}
 
-	if (!map_sip_addr(pskb, ctinfo, ct, dptr, datalen, POS_FROM, &map) ||
-	    !map_sip_addr(pskb, ctinfo, ct, dptr, datalen, POS_TO, &map) ||
-	    !map_sip_addr(pskb, ctinfo, ct, dptr, datalen, POS_VIA, &map) ||
-	    !map_sip_addr(pskb, ctinfo, ct, dptr, datalen, POS_CONTACT, &map))
+	if (!map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_FROM, &map) ||
+	    !map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_TO, &map) ||
+	    !map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_VIA, &map) ||
+	    !map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_CONTACT, &map))
 		return NF_DROP;
 	return NF_ACCEPT;
 }
 
-static unsigned int mangle_sip_packet(struct sk_buff **pskb,
+static unsigned int mangle_sip_packet(struct sk_buff *skb,
 				      enum ip_conntrack_info ctinfo,
 				      struct nf_conn *ct,
 				      const char **dptr, size_t dlen,
···
 	if (ct_sip_get_info(ct, *dptr, dlen, &matchoff, &matchlen, pos) <= 0)
 		return 0;
 
-	if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo,
+	if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
 				      matchoff, matchlen, buffer, bufflen))
 		return 0;
 
 	/* We need to reload this. Thanks Patrick. */
-	*dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr);
+	*dptr = skb->data + ip_hdrlen(skb) + sizeof(struct udphdr);
 	return 1;
 }
 
-static int mangle_content_len(struct sk_buff **pskb,
+static int mangle_content_len(struct sk_buff *skb,
 			      enum ip_conntrack_info ctinfo,
 			      struct nf_conn *ct,
 			      const char *dptr)
···
 	char buffer[sizeof("65536")];
 	int bufflen;
 
-	dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
+	dataoff = ip_hdrlen(skb) + sizeof(struct udphdr);
 
 	/* Get actual SDP lenght */
-	if (ct_sip_get_info(ct, dptr, (*pskb)->len - dataoff, &matchoff,
+	if (ct_sip_get_info(ct, dptr, skb->len - dataoff, &matchoff,
 			    &matchlen, POS_SDP_HEADER) > 0) {
 
 		/* since ct_sip_get_info() give us a pointer passing 'v='
 		   we need to add 2 bytes in this count. */
-		int c_len = (*pskb)->len - dataoff - matchoff + 2;
+		int c_len = skb->len - dataoff - matchoff + 2;
 
 		/* Now, update SDP length */
-		if (ct_sip_get_info(ct, dptr, (*pskb)->len - dataoff, &matchoff,
+		if (ct_sip_get_info(ct, dptr, skb->len - dataoff, &matchoff,
 				    &matchlen, POS_CONTENT) > 0) {
 
 			bufflen = sprintf(buffer, "%u", c_len);
-			return nf_nat_mangle_udp_packet(pskb, ct, ctinfo,
+			return nf_nat_mangle_udp_packet(skb, ct, ctinfo,
 							matchoff, matchlen,
 							buffer, bufflen);
 		}
···
 	return 0;
 }
 
-static unsigned int mangle_sdp(struct sk_buff **pskb,
+static unsigned int mangle_sdp(struct sk_buff *skb,
 			       enum ip_conntrack_info ctinfo,
 			       struct nf_conn *ct,
 			       __be32 newip, u_int16_t port,
···
 	char buffer[sizeof("nnn.nnn.nnn.nnn")];
 	unsigned int dataoff, bufflen;
 
-	dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
+	dataoff = ip_hdrlen(skb) + sizeof(struct udphdr);
 
 	/* Mangle owner and contact info. */
 	bufflen = sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(newip));
-	if (!mangle_sip_packet(pskb, ctinfo, ct, &dptr, (*pskb)->len - dataoff,
+	if (!mangle_sip_packet(skb, ctinfo, ct, &dptr, skb->len - dataoff,
 			       buffer, bufflen, POS_OWNER_IP4))
 		return 0;
 
-	if (!mangle_sip_packet(pskb, ctinfo, ct, &dptr, (*pskb)->len - dataoff,
+	if (!mangle_sip_packet(skb, ctinfo, ct, &dptr, skb->len - dataoff,
 			       buffer, bufflen, POS_CONNECTION_IP4))
 		return 0;
 
 	/* Mangle media port. */
 	bufflen = sprintf(buffer, "%u", port);
-	if (!mangle_sip_packet(pskb, ctinfo, ct, &dptr, (*pskb)->len - dataoff,
+	if (!mangle_sip_packet(skb, ctinfo, ct, &dptr, skb->len - dataoff,
 			       buffer, bufflen, POS_MEDIA))
 		return 0;
 
-	return mangle_content_len(pskb, ctinfo, ct, dptr);
+	return mangle_content_len(skb, ctinfo, ct, dptr);
 }
 
 static void ip_nat_sdp_expect(struct nf_conn *ct,
···
 
 /* So, this packet has hit the connection tracking matching code.
    Mangle it, and change the expectation to match the new version. */
-static unsigned int ip_nat_sdp(struct sk_buff **pskb,
+static unsigned int ip_nat_sdp(struct sk_buff *skb,
 			       enum ip_conntrack_info ctinfo,
 			       struct nf_conntrack_expect *exp,
 			       const char *dptr)
···
 	if (port == 0)
 		return NF_DROP;
 
-	if (!mangle_sdp(pskb, ctinfo, ct, newip, port, dptr)) {
+	if (!mangle_sdp(skb, ctinfo, ct, newip, port, dptr)) {
 		nf_ct_unexpect_related(exp);
 		return NF_DROP;
 	}

net/ipv4/netfilter/nf_nat_snmp_basic.c

···
  */
 static int snmp_translate(struct nf_conn *ct,
 			  enum ip_conntrack_info ctinfo,
-			  struct sk_buff **pskb)
+			  struct sk_buff *skb)
 {
-	struct iphdr *iph = ip_hdr(*pskb);
+	struct iphdr *iph = ip_hdr(skb);
 	struct udphdr *udph = (struct udphdr *)((__be32 *)iph + iph->ihl);
 	u_int16_t udplen = ntohs(udph->len);
 	u_int16_t paylen = udplen - sizeof(struct udphdr);
···
 
 /* We don't actually set up expectations, just adjust internal IP
  * addresses if this is being NATted */
-static int help(struct sk_buff **pskb, unsigned int protoff,
+static int help(struct sk_buff *skb, unsigned int protoff,
 		struct nf_conn *ct,
 		enum ip_conntrack_info ctinfo)
 {
 	int dir = CTINFO2DIR(ctinfo);
 	unsigned int ret;
-	struct iphdr *iph = ip_hdr(*pskb);
+	struct iphdr *iph = ip_hdr(skb);
 	struct udphdr *udph = (struct udphdr *)((u_int32_t *)iph + iph->ihl);
 
 	/* SNMP replies and originating SNMP traps get mangled */
···
 	 * enough room for a UDP header.  Just verify the UDP length field so we
 	 * can mess around with the payload.
 	 */
-	if (ntohs(udph->len) != (*pskb)->len - (iph->ihl << 2)) {
+	if (ntohs(udph->len) != skb->len - (iph->ihl << 2)) {
 		 if (net_ratelimit())
 			 printk(KERN_WARNING "SNMP: dropping malformed packet "
 				"src=%u.%u.%u.%u dst=%u.%u.%u.%u\n",
···
 		 return NF_DROP;
 	}
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return NF_DROP;
 
 	spin_lock_bh(&snmp_lock);
-	ret = snmp_translate(ct, ctinfo, pskb);
+	ret = snmp_translate(ct, ctinfo, skb);
 	spin_unlock_bh(&snmp_lock);
 	return ret;
 }

net/ipv4/netfilter/nf_nat_standalone.c

···
 
 static unsigned int
 nf_nat_fn(unsigned int hooknum,
-	  struct sk_buff **pskb,
+	  struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  int (*okfn)(struct sk_buff *))
···
 
 	/* We never see fragments: conntrack defrags on pre-routing
 	   and local-out, and nf_nat_out protects post-routing. */
-	NF_CT_ASSERT(!(ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)));
+	NF_CT_ASSERT(!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)));
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	/* Can't track?  It's not due to stress, or conntrack would
 	   have dropped it.  Hence it's the user's responsibilty to
 	   packet filter it out, or implement conntrack/NAT for that
···
 		/* Exception: ICMP redirect to new connection (not in
 		   hash table yet).  We must not let this through, in
 		   case we're doing NAT to the same network. */
-		if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
+		if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
 			struct icmphdr _hdr, *hp;
 
-			hp = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
+			hp = skb_header_pointer(skb, ip_hdrlen(skb),
 						sizeof(_hdr), &_hdr);
 			if (hp != NULL &&
 			    hp->type == ICMP_REDIRECT)
···
 	switch (ctinfo) {
 	case IP_CT_RELATED:
 	case IP_CT_RELATED+IP_CT_IS_REPLY:
-		if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
+		if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
 			if (!nf_nat_icmp_reply_translation(ct, ctinfo,
-							   hooknum, pskb))
+							   hooknum, skb))
 				return NF_DROP;
 			else
 				return NF_ACCEPT;
···
 				/* LOCAL_IN hook doesn't have a chain!  */
 				ret = alloc_null_binding(ct, hooknum);
 			else
-				ret = nf_nat_rule_find(pskb, hooknum, in, out,
+				ret = nf_nat_rule_find(skb, hooknum, in, out,
 						       ct);
 
 			if (ret != NF_ACCEPT) {
···
 			     ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
 	}
 
-	return nf_nat_packet(ct, ctinfo, hooknum, pskb);
+	return nf_nat_packet(ct, ctinfo, hooknum, skb);
 }
 
 static unsigned int
 nf_nat_in(unsigned int hooknum,
-	  struct sk_buff **pskb,
+	  struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  int (*okfn)(struct sk_buff *))
 {
 	unsigned int ret;
-	__be32 daddr = ip_hdr(*pskb)->daddr;
+	__be32 daddr = ip_hdr(skb)->daddr;
 
-	ret = nf_nat_fn(hooknum, pskb, in, out, okfn);
+	ret = nf_nat_fn(hooknum, skb, in, out, okfn);
 	if (ret != NF_DROP && ret != NF_STOLEN &&
-	    daddr != ip_hdr(*pskb)->daddr) {
-		dst_release((*pskb)->dst);
-		(*pskb)->dst = NULL;
+	    daddr != ip_hdr(skb)->daddr) {
+		dst_release(skb->dst);
+		skb->dst = NULL;
 	}
 	return ret;
 }
 
 static unsigned int
 nf_nat_out(unsigned int hooknum,
-	   struct sk_buff **pskb,
+	   struct sk_buff *skb,
 	   const struct net_device *in,
 	   const struct net_device *out,
 	   int (*okfn)(struct sk_buff *))
···
 	unsigned int ret;
 
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr) ||
-	    ip_hdrlen(*pskb) < sizeof(struct iphdr))
+	if (skb->len < sizeof(struct iphdr) ||
+	    ip_hdrlen(skb) < sizeof(struct iphdr))
 		return NF_ACCEPT;
 
-	ret = nf_nat_fn(hooknum, pskb, in, out, okfn);
+	ret = nf_nat_fn(hooknum, skb, in, out, okfn);
 #ifdef CONFIG_XFRM
 	if (ret != NF_DROP && ret != NF_STOLEN &&
-	    (ct = nf_ct_get(*pskb, &ctinfo)) != NULL) {
+	    (ct = nf_ct_get(skb, &ctinfo)) != NULL) {
 		enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 
 		if (ct->tuplehash[dir].tuple.src.u3.ip !=
···
 		    || ct->tuplehash[dir].tuple.src.u.all !=
 		       ct->tuplehash[!dir].tuple.dst.u.all
 		    )
-			return ip_xfrm_me_harder(pskb) == 0 ? ret : NF_DROP;
+			return ip_xfrm_me_harder(skb) == 0 ? ret : NF_DROP;
 	}
 #endif
 	return ret;
···
 
 static unsigned int
 nf_nat_local_fn(unsigned int hooknum,
-		struct sk_buff **pskb,
+		struct sk_buff *skb,
 		const struct net_device *in,
 		const struct net_device *out,
 		int (*okfn)(struct sk_buff *))
···
 	unsigned int ret;
 
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr) ||
-	    ip_hdrlen(*pskb) < sizeof(struct iphdr))
+	if (skb->len < sizeof(struct iphdr) ||
+	    ip_hdrlen(skb) < sizeof(struct iphdr))
 		return NF_ACCEPT;
 
-	ret = nf_nat_fn(hooknum, pskb, in, out, okfn);
+	ret = nf_nat_fn(hooknum, skb, in, out, okfn);
 	if (ret != NF_DROP && ret != NF_STOLEN &&
-	    (ct = nf_ct_get(*pskb, &ctinfo)) != NULL) {
+	    (ct = nf_ct_get(skb, &ctinfo)) != NULL) {
 		enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
 
 		if (ct->tuplehash[dir].tuple.dst.u3.ip !=
 		    ct->tuplehash[!dir].tuple.src.u3.ip) {
-			if (ip_route_me_harder(pskb, RTN_UNSPEC))
+			if (ip_route_me_harder(skb, RTN_UNSPEC))
 				ret = NF_DROP;
 		}
 #ifdef CONFIG_XFRM
 		else if (ct->tuplehash[dir].tuple.dst.u.all !=
 			 ct->tuplehash[!dir].tuple.src.u.all)
-			if (ip_xfrm_me_harder(pskb))
+			if (ip_xfrm_me_harder(skb))
 				ret = NF_DROP;
 #endif
 	}
···
 
 static unsigned int
 nf_nat_adjust(unsigned int hooknum,
-	      struct sk_buff **pskb,
+	      struct sk_buff *skb,
 	      const struct net_device *in,
 	      const struct net_device *out,
 	      int (*okfn)(struct sk_buff *))
···
 	struct nf_conn *ct;
 	enum ip_conntrack_info ctinfo;
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	if (ct && test_bit(IPS_SEQ_ADJUST_BIT, &ct->status)) {
 		pr_debug("nf_nat_standalone: adjusting sequence number\n");
-		if (!nf_nat_seq_adjust(pskb, ct, ctinfo))
+		if (!nf_nat_seq_adjust(skb, ct, ctinfo))
 			return NF_DROP;
 	}
 	return NF_ACCEPT;

net/ipv4/netfilter/nf_nat_tftp.c

···
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_nat_tftp");
 
-static unsigned int help(struct sk_buff **pskb,
+static unsigned int help(struct sk_buff *skb,
 			 enum ip_conntrack_info ctinfo,
 			 struct nf_conntrack_expect *exp)
 {

net/ipv4/proc.c

···
 	seq_printf(seq, "UDP: inuse %d\n", fold_prot_inuse(&udp_prot));
 	seq_printf(seq, "UDPLITE: inuse %d\n", fold_prot_inuse(&udplite_prot));
 	seq_printf(seq, "RAW: inuse %d\n", fold_prot_inuse(&raw_prot));
-	seq_printf(seq,  "FRAG: inuse %d memory %d\n", ip_frag_nqueues,
-		   atomic_read(&ip_frag_mem));
+	seq_printf(seq,  "FRAG: inuse %d memory %d\n",
+			ip_frag_nqueues(), ip_frag_mem());
 	return 0;
 }
 

net/ipv4/sysctl_net_ipv4.c

···
 #include <net/route.h>
 #include <net/tcp.h>
 #include <net/cipso_ipv4.h>
+#include <net/inet_frag.h>
 
 /* From af_inet.c */
 extern int sysctl_ip_nonlocal_bind;
···
 	{
 		.ctl_name	= NET_IPV4_IPFRAG_HIGH_THRESH,
 		.procname	= "ipfrag_high_thresh",
-		.data		= &sysctl_ipfrag_high_thresh,
+		.data		= &ip4_frags_ctl.high_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
···
 	{
 		.ctl_name	= NET_IPV4_IPFRAG_LOW_THRESH,
 		.procname	= "ipfrag_low_thresh",
-		.data		= &sysctl_ipfrag_low_thresh,
+		.data		= &ip4_frags_ctl.low_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
···
 	{
 		.ctl_name	= NET_IPV4_IPFRAG_TIME,
 		.procname	= "ipfrag_time",
-		.data		= &sysctl_ipfrag_time,
+		.data		= &ip4_frags_ctl.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,
···
 	{
 		.ctl_name	= NET_IPV4_IPFRAG_SECRET_INTERVAL,
 		.procname	= "ipfrag_secret_interval",
-		.data		= &sysctl_ipfrag_secret_interval,
+		.data		= &ip4_frags_ctl.secret_interval,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,

net/ipv4/tcp_input.c

···
 }
 
 /* Mark head of queue up as lost. */
-static void tcp_mark_head_lost(struct sock *sk,
-			       int packets, u32 high_seq)
+static void tcp_mark_head_lost(struct sock *sk, int packets)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct sk_buff *skb;
···
 		tp->lost_skb_hint = skb;
 		tp->lost_cnt_hint = cnt;
 		cnt += tcp_skb_pcount(skb);
-		if (cnt > packets || after(TCP_SKB_CB(skb)->end_seq, high_seq))
+		if (cnt > packets || after(TCP_SKB_CB(skb)->end_seq, tp->high_seq))
 			break;
 		if (!(TCP_SKB_CB(skb)->sacked & (TCPCB_SACKED_ACKED|TCPCB_LOST))) {
 			TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
···
 		int lost = tp->fackets_out - tp->reordering;
 		if (lost <= 0)
 			lost = 1;
-		tcp_mark_head_lost(sk, lost, tp->high_seq);
+		tcp_mark_head_lost(sk, lost);
 	} else {
-		tcp_mark_head_lost(sk, 1, tp->high_seq);
+		tcp_mark_head_lost(sk, 1);
 	}
 
 	/* New heuristics: it is possible only after we switched
···
 	    before(tp->snd_una, tp->high_seq) &&
 	    icsk->icsk_ca_state != TCP_CA_Open &&
 	    tp->fackets_out > tp->reordering) {
-		tcp_mark_head_lost(sk, tp->fackets_out-tp->reordering, tp->high_seq);
+		tcp_mark_head_lost(sk, tp->fackets_out - tp->reordering);
 		NET_INC_STATS_BH(LINUX_MIB_TCPLOSS);
 	}
 

net/ipv4/xfrm4_output.c

···
 	while (likely((err = xfrm4_output_one(skb)) == 0)) {
 		nf_reset(skb);
 
-		err = nf_hook(PF_INET, NF_IP_LOCAL_OUT, &skb, NULL,
+		err = nf_hook(PF_INET, NF_IP_LOCAL_OUT, skb, NULL,
 			      skb->dst->dev, dst_output);
 		if (unlikely(err != 1))
 			break;
···
 		if (!skb->dst->xfrm)
 			return dst_output(skb);
 
-		err = nf_hook(PF_INET, NF_IP_POST_ROUTING, &skb, NULL,
+		err = nf_hook(PF_INET, NF_IP_POST_ROUTING, skb, NULL,
 			      skb->dst->dev, xfrm4_output_finish2);
 		if (unlikely(err != 1))
 			break;

net/ipv6/exthdrs.c

···
 
 struct tlvtype_proc {
 	int	type;
-	int	(*func)(struct sk_buff **skbp, int offset);
+	int	(*func)(struct sk_buff *skb, int offset);
 };
 
 /*********************
···
 
 /* An unknown option is detected, decide what to do */
 
-static int ip6_tlvopt_unknown(struct sk_buff **skbp, int optoff)
+static int ip6_tlvopt_unknown(struct sk_buff *skb, int optoff)
 {
-	struct sk_buff *skb = *skbp;
-
 	switch ((skb_network_header(skb)[optoff] & 0xC0) >> 6) {
 	case 0: /* ignore */
 		return 1;
···
 
 /* Parse tlv encoded option header (hop-by-hop or destination) */
 
-static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
+static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
 	struct tlvtype_proc *curr;
 	const unsigned char *nh = skb_network_header(skb);
 	int off = skb_network_header_len(skb);
···
 					/* type specific length/alignment
 					   checks will be performed in the
 					   func(). */
-					if (curr->func(skbp, off) == 0)
+					if (curr->func(skb, off) == 0)
 						return 0;
 					break;
 				}
 			}
 			if (curr->type < 0) {
-				if (ip6_tlvopt_unknown(skbp, off) == 0)
+				if (ip6_tlvopt_unknown(skb, off) == 0)
 					return 0;
 			}
 			break;
···
  *****************************/
 
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
-static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
+static int ipv6_dest_hao(struct sk_buff *skb, int optoff)
 {
-	struct sk_buff *skb = *skbp;
 	struct ipv6_destopt_hao *hao;
 	struct inet6_skb_parm *opt = IP6CB(skb);
 	struct ipv6hdr *ipv6h = ipv6_hdr(skb);
···
 		goto discard;
 
 	if (skb_cloned(skb)) {
-		struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
-		struct inet6_skb_parm *opt2;
-
-		if (skb2 == NULL)
+		if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
 			goto discard;
 
-		opt2 = IP6CB(skb2);
-		memcpy(opt2, opt, sizeof(*opt2));
-
-		kfree_skb(skb);
-
 		/* update all variable using below by copied skbuff */
-		*skbp = skb = skb2;
-		hao = (struct ipv6_destopt_hao *)(skb_network_header(skb2) +
+		hao = (struct ipv6_destopt_hao *)(skb_network_header(skb) +
 						  optoff);
-		ipv6h = ipv6_hdr(skb2);
+		ipv6h = ipv6_hdr(skb);
 	}
 
 	if (skb->ip_summed == CHECKSUM_COMPLETE)
···
 	{-1,			NULL}
 };
 
-static int ipv6_destopt_rcv(struct sk_buff **skbp)
+static int ipv6_destopt_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
 	struct inet6_skb_parm *opt = IP6CB(skb);
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
 	__u16 dstbuf;
···
 #endif
 
 	dst = dst_clone(skb->dst);
-	if (ip6_parse_tlv(tlvprocdestopt_lst, skbp)) {
+	if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
 		dst_release(dst);
-		skb = *skbp;
 		skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
 		opt = IP6CB(skb);
 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
···
   NONE header. No data in packet.
  ********************************/
 
-static int ipv6_nodata_rcv(struct sk_buff **skbp)
+static int ipv6_nodata_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
-
 	kfree_skb(skb);
 	return 0;
 }
···
   Routing header.
  ********************************/
 
-static int ipv6_rthdr_rcv(struct sk_buff **skbp)
+static int ipv6_rthdr_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
 	struct inet6_skb_parm *opt = IP6CB(skb);
 	struct in6_addr *addr = NULL;
 	struct in6_addr daddr;
···
 	   Do not damage packets queued somewhere.
 	 */
 	if (skb_cloned(skb)) {
-		struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
 		/* the copy is a forwarded packet */
-		if (skb2 == NULL) {
+		if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
 			IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
 					 IPSTATS_MIB_OUTDISCARDS);
 			kfree_skb(skb);
 			return -1;
 		}
-		kfree_skb(skb);
-		*skbp = skb = skb2;
-		opt = IP6CB(skb2);
-		hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb2);
+		hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb);
 	}
 
 	if (skb->ip_summed == CHECKSUM_COMPLETE)
···
 
 /* Router Alert as of RFC 2711 */
 
-static int ipv6_hop_ra(struct sk_buff **skbp, int optoff)
+static int ipv6_hop_ra(struct sk_buff *skb, int optoff)
 {
-	struct sk_buff *skb = *skbp;
 	const unsigned char *nh = skb_network_header(skb);
 
 	if (nh[optoff + 1] == 2) {
···
 
 /* Jumbo payload */
 
-static int ipv6_hop_jumbo(struct sk_buff **skbp, int optoff)
+static int ipv6_hop_jumbo(struct sk_buff *skb, int optoff)
 {
-	struct sk_buff *skb = *skbp;
 	const unsigned char *nh = skb_network_header(skb);
 	u32 pkt_len;
 
···
 	{ -1, }
 };
 
-int ipv6_parse_hopopts(struct sk_buff **skbp)
+int ipv6_parse_hopopts(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
 	struct inet6_skb_parm *opt = IP6CB(skb);
 
 	/*
···
 	}
 
 	opt->hop = sizeof(struct ipv6hdr);
-	if (ip6_parse_tlv(tlvprochopopt_lst, skbp)) {
-		skb = *skbp;
+	if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {
 		skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
 		opt = IP6CB(skb);
 		opt->nhoff = sizeof(struct ipv6hdr);

net/ipv6/icmp.c

···
 static DEFINE_PER_CPU(struct socket *, __icmpv6_socket) = NULL;
 #define icmpv6_socket	__get_cpu_var(__icmpv6_socket)
 
-static int icmpv6_rcv(struct sk_buff **pskb);
+static int icmpv6_rcv(struct sk_buff *skb);
 
 static struct inet6_protocol icmpv6_protocol = {
 	.handler	=	icmpv6_rcv,
···
  *	Handle icmp messages
  */
 
-static int icmpv6_rcv(struct sk_buff **pskb)
+static int icmpv6_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct net_device *dev = skb->dev;
 	struct inet6_dev *idev = __in6_dev_get(dev);
 	struct in6_addr *saddr, *daddr;

net/ipv6/inet6_connection_sock.c

···
 	__ip6_dst_store(sk, dst, daddr, saddr);
 
 #ifdef CONFIG_XFRM
-	if (dst) {
+	{
 		struct rt6_info *rt = (struct rt6_info  *)dst;
 		rt->rt6i_flow_cache_genid = atomic_read(&flow_cache_genid);
 	}

net/ipv6/ip6_input.c

···
 	}
 
 	if (hdr->nexthdr == NEXTHDR_HOP) {
-		if (ipv6_parse_hopopts(&skb) < 0) {
+		if (ipv6_parse_hopopts(skb) < 0) {
 			IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
 			rcu_read_unlock();
 			return 0;
···
  */
 
 
-static inline int ip6_input_finish(struct sk_buff *skb)
+static int ip6_input_finish(struct sk_buff *skb)
 {
 	struct inet6_protocol *ipprot;
 	struct sock *raw_sk;
···
 		    !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
 			goto discard;
 
-		ret = ipprot->handler(&skb);
+		ret = ipprot->handler(skb);
 		if (ret > 0)
 			goto resubmit;
 		else if (ret == 0)

net/ipv6/ip6_output.c

···
 	spin_unlock_bh(&ip6_id_lock);
 }
 
-static inline int ip6_output_finish(struct sk_buff *skb)
+static int ip6_output_finish(struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb->dst;
 

net/ipv6/netfilter.c

···
 	}
 }
 
-static int nf_ip6_reroute(struct sk_buff **pskb, const struct nf_info *info)
+static int nf_ip6_reroute(struct sk_buff *skb, const struct nf_info *info)
 {
 	struct ip6_rt_info *rt_info = nf_info_reroute(info);
 
 	if (info->hook == NF_IP6_LOCAL_OUT) {
-		struct ipv6hdr *iph = ipv6_hdr(*pskb);
+		struct ipv6hdr *iph = ipv6_hdr(skb);
 		if (!ipv6_addr_equal(&iph->daddr, &rt_info->daddr) ||
 		    !ipv6_addr_equal(&iph->saddr, &rt_info->saddr))
-			return ip6_route_me_harder(*pskb);
+			return ip6_route_me_harder(skb);
 	}
 	return 0;
 }

net/ipv6/netfilter/ip6_queue.c

···
 ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
 {
 	int diff;
+	int err;
 	struct ipv6hdr *user_iph = (struct ipv6hdr *)v->payload;
 
 	if (v->data_len < sizeof(*user_iph))
···
 		if (v->data_len > 0xFFFF)
 			return -EINVAL;
 		if (diff > skb_tailroom(e->skb)) {
-			struct sk_buff *newskb;
-
-			newskb = skb_copy_expand(e->skb,
-						 skb_headroom(e->skb),
-						 diff,
-						 GFP_ATOMIC);
-			if (newskb == NULL) {
+			err = pskb_expand_head(e->skb, 0,
+					       diff - skb_tailroom(e->skb),
+					       GFP_ATOMIC);
+			if (err) {
 				printk(KERN_WARNING "ip6_queue: OOM "
 				      "in mangle, dropping packet\n");
-				return -ENOMEM;
+				return err;
 			}
-			if (e->skb->sk)
-				skb_set_owner_w(newskb, e->skb->sk);
-			kfree_skb(e->skb);
-			e->skb = newskb;
 		}
 		skb_put(e->skb, diff);
 	}
-	if (!skb_make_writable(&e->skb, v->data_len))
+	if (!skb_make_writable(e->skb, v->data_len))
 		return -ENOMEM;
 	skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
 	e->skb->ip_summed = CHECKSUM_NONE;

net/ipv6/netfilter/ip6_tables.c

···
 }
 
 static unsigned int
-ip6t_error(struct sk_buff **pskb,
+ip6t_error(struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  unsigned int hooknum,
···
 
 /* Returns one of the generic firewall policies, like NF_ACCEPT. */
 unsigned int
-ip6t_do_table(struct sk_buff **pskb,
+ip6t_do_table(struct sk_buff *skb,
 	      unsigned int hook,
 	      const struct net_device *in,
 	      const struct net_device *out,
···
 	do {
 		IP_NF_ASSERT(e);
 		IP_NF_ASSERT(back);
-		if (ip6_packet_match(*pskb, indev, outdev, &e->ipv6,
+		if (ip6_packet_match(skb, indev, outdev, &e->ipv6,
 			&protoff, &offset, &hotdrop)) {
 			struct ip6t_entry_target *t;
 
 			if (IP6T_MATCH_ITERATE(e, do_match,
-					       *pskb, in, out,
+					       skb, in, out,
 					       offset, protoff, &hotdrop) != 0)
 				goto no_match;
 
 			ADD_COUNTER(e->counters,
-				    ntohs(ipv6_hdr(*pskb)->payload_len)
+				    ntohs(ipv6_hdr(skb)->payload_len)
 				    + IPV6_HDR_LEN,
 				    1);
 
···
 #if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
     defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
 			/* The packet is traced: log it */
-			if (unlikely((*pskb)->nf_trace))
-				trace_packet(*pskb, hook, in, out,
+			if (unlikely(skb->nf_trace))
+				trace_packet(skb, hook, in, out,
 					     table->name, private, e);
 #endif
 			/* Standard target? */
···
 				((struct ip6t_entry *)table_base)->comefrom
 					= 0xeeeeeeec;
 #endif
-				verdict = t->u.kernel.target->target(pskb,
+				verdict = t->u.kernel.target->target(skb,
 								     in, out,
 								     hook,
 								     t->u.kernel.target,

net/ipv6/netfilter/ip6t_HL.c

···
 MODULE_DESCRIPTION("IP6 tables Hop Limit modification module");
 MODULE_LICENSE("GPL");
 
-static unsigned int ip6t_hl_target(struct sk_buff **pskb,
+static unsigned int ip6t_hl_target(struct sk_buff *skb,
 				   const struct net_device *in,
 				   const struct net_device *out,
 				   unsigned int hooknum,
···
 	const struct ip6t_HL_info *info = targinfo;
 	int new_hl;
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return NF_DROP;
 
-	ip6h = ipv6_hdr(*pskb);
+	ip6h = ipv6_hdr(skb);
 
 	switch (info->mode) {
 		case IP6T_HL_SET:

net/ipv6/netfilter/ip6t_LOG.c

···
 }
 
 static unsigned int
-ip6t_log_target(struct sk_buff **pskb,
+ip6t_log_target(struct sk_buff *skb,
 		const struct net_device *in,
 		const struct net_device *out,
 		unsigned int hooknum,
···
 	li.u.log.level = loginfo->level;
 	li.u.log.logflags = loginfo->logflags;
 
-	ip6t_log_packet(PF_INET6, hooknum, *pskb, in, out, &li,
-			loginfo->prefix);
+	ip6t_log_packet(PF_INET6, hooknum, skb, in, out, &li, loginfo->prefix);
 	return XT_CONTINUE;
 }
 

net/ipv6/netfilter/ip6t_REJECT.c

···
 	icmpv6_send(skb_in, ICMPV6_DEST_UNREACH, code, 0, NULL);
 }
 
-static unsigned int reject6_target(struct sk_buff **pskb,
+static unsigned int reject6_target(struct sk_buff *skb,
 			   const struct net_device *in,
 			   const struct net_device *out,
 			   unsigned int hooknum,
···
 	   must return an absolute verdict. --RR */
 	switch (reject->with) {
 	case IP6T_ICMP6_NO_ROUTE:
-		send_unreach(*pskb, ICMPV6_NOROUTE, hooknum);
+		send_unreach(skb, ICMPV6_NOROUTE, hooknum);
 		break;
 	case IP6T_ICMP6_ADM_PROHIBITED:
-		send_unreach(*pskb, ICMPV6_ADM_PROHIBITED, hooknum);
+		send_unreach(skb, ICMPV6_ADM_PROHIBITED, hooknum);
 		break;
 	case IP6T_ICMP6_NOT_NEIGHBOUR:
-		send_unreach(*pskb, ICMPV6_NOT_NEIGHBOUR, hooknum);
+		send_unreach(skb, ICMPV6_NOT_NEIGHBOUR, hooknum);
 		break;
 	case IP6T_ICMP6_ADDR_UNREACH:
-		send_unreach(*pskb, ICMPV6_ADDR_UNREACH, hooknum);
+		send_unreach(skb, ICMPV6_ADDR_UNREACH, hooknum);
 		break;
 	case IP6T_ICMP6_PORT_UNREACH:
-		send_unreach(*pskb, ICMPV6_PORT_UNREACH, hooknum);
+		send_unreach(skb, ICMPV6_PORT_UNREACH, hooknum);
 		break;
 	case IP6T_ICMP6_ECHOREPLY:
 		/* Do nothing */
 		break;
 	case IP6T_TCP_RESET:
-		send_reset(*pskb);
+		send_reset(skb);
 		break;
 	default:
 		if (net_ratelimit())

net/ipv6/netfilter/ip6table_filter.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ip6t_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ip6t_do_table(pskb, hook, in, out, &packet_filter);
+	return ip6t_do_table(skb, hook, in, out, &packet_filter);
 }
 
 static unsigned int
 ip6t_local_out_hook(unsigned int hook,
-		   struct sk_buff **pskb,
+		   struct sk_buff *skb,
 		   const struct net_device *in,
 		   const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
 {
 #if 0
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr)
-	    || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr)
+	    || ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("ip6t_hook: happy cracking.\n");
 		return NF_ACCEPT;
 	}
 #endif
 
-	return ip6t_do_table(pskb, hook, in, out, &packet_filter);
+	return ip6t_do_table(skb, hook, in, out, &packet_filter);
 }
 
 static struct nf_hook_ops ip6t_ops[] = {

net/ipv6/netfilter/ip6table_mangle.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ip6t_route_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ip6t_do_table(pskb, hook, in, out, &packet_mangler);
+	return ip6t_do_table(skb, hook, in, out, &packet_mangler);
 }
 
 static unsigned int
 ip6t_local_hook(unsigned int hook,
-		   struct sk_buff **pskb,
+		   struct sk_buff *skb,
 		   const struct net_device *in,
 		   const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
···
 
 #if 0
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct iphdr)
-	    || ip_hdrlen(*pskb) < sizeof(struct iphdr)) {
+	if (skb->len < sizeof(struct iphdr)
+	    || ip_hdrlen(skb) < sizeof(struct iphdr)) {
 		if (net_ratelimit())
 			printk("ip6t_hook: happy cracking.\n");
 		return NF_ACCEPT;
···
 #endif
 
 	/* save source/dest address, mark, hoplimit, flowlabel, priority,  */
-	memcpy(&saddr, &ipv6_hdr(*pskb)->saddr, sizeof(saddr));
-	memcpy(&daddr, &ipv6_hdr(*pskb)->daddr, sizeof(daddr));
-	mark = (*pskb)->mark;
-	hop_limit = ipv6_hdr(*pskb)->hop_limit;
+	memcpy(&saddr, &ipv6_hdr(skb)->saddr, sizeof(saddr));
+	memcpy(&daddr, &ipv6_hdr(skb)->daddr, sizeof(daddr));
+	mark = skb->mark;
+	hop_limit = ipv6_hdr(skb)->hop_limit;
 
 	/* flowlabel and prio (includes version, which shouldn't change either */
-	flowlabel = *((u_int32_t *)ipv6_hdr(*pskb));
+	flowlabel = *((u_int32_t *)ipv6_hdr(skb));
 
-	ret = ip6t_do_table(pskb, hook, in, out, &packet_mangler);
+	ret = ip6t_do_table(skb, hook, in, out, &packet_mangler);
 
 	if (ret != NF_DROP && ret != NF_STOLEN
-		&& (memcmp(&ipv6_hdr(*pskb)->saddr, &saddr, sizeof(saddr))
-		    || memcmp(&ipv6_hdr(*pskb)->daddr, &daddr, sizeof(daddr))
-		    || (*pskb)->mark != mark
-		    || ipv6_hdr(*pskb)->hop_limit != hop_limit))
-		return ip6_route_me_harder(*pskb) == 0 ? ret : NF_DROP;
+		&& (memcmp(&ipv6_hdr(skb)->saddr, &saddr, sizeof(saddr))
+		    || memcmp(&ipv6_hdr(skb)->daddr, &daddr, sizeof(daddr))
+		    || skb->mark != mark
+		    || ipv6_hdr(skb)->hop_limit != hop_limit))
+		return ip6_route_me_harder(skb) == 0 ? ret : NF_DROP;
 
 	return ret;
 }

net/ipv6/netfilter/ip6table_raw.c

···
 /* The work comes in here from netfilter.c. */
 static unsigned int
 ip6t_hook(unsigned int hook,
-	 struct sk_buff **pskb,
+	 struct sk_buff *skb,
 	 const struct net_device *in,
 	 const struct net_device *out,
 	 int (*okfn)(struct sk_buff *))
 {
-	return ip6t_do_table(pskb, hook, in, out, &packet_raw);
+	return ip6t_do_table(skb, hook, in, out, &packet_raw);
 }
 
 static struct nf_hook_ops ip6t_ops[] = {

net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c

···
 #include <linux/icmp.h>
 #include <linux/sysctl.h>
 #include <net/ipv6.h>
+#include <net/inet_frag.h>
 
 #include <linux/netfilter_ipv6.h>
 #include <net/netfilter/nf_conntrack.h>
···
 }
 
 static unsigned int ipv6_confirm(unsigned int hooknum,
-				 struct sk_buff **pskb,
+				 struct sk_buff *skb,
 				 const struct net_device *in,
 				 const struct net_device *out,
 				 int (*okfn)(struct sk_buff *))
···
 	struct nf_conntrack_helper *helper;
 	enum ip_conntrack_info ctinfo;
 	unsigned int ret, protoff;
-	unsigned int extoff = (u8 *)(ipv6_hdr(*pskb) + 1) - (*pskb)->data;
-	unsigned char pnum = ipv6_hdr(*pskb)->nexthdr;
+	unsigned int extoff = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
+	unsigned char pnum = ipv6_hdr(skb)->nexthdr;
 
 
 	/* This is where we call the helper: as the packet goes out. */
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY)
 		goto out;
 
···
 	if (!helper)
 		goto out;
 
-	protoff = nf_ct_ipv6_skip_exthdr(*pskb, extoff, &pnum,
-					 (*pskb)->len - extoff);
-	if (protoff > (*pskb)->len || pnum == NEXTHDR_FRAGMENT) {
+	protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum,
+					 skb->len - extoff);
+	if (protoff > skb->len || pnum == NEXTHDR_FRAGMENT) {
 		pr_debug("proto header not found\n");
 		return NF_ACCEPT;
 	}
 
-	ret = helper->help(pskb, protoff, ct, ctinfo);
+	ret = helper->help(skb, protoff, ct, ctinfo);
 	if (ret != NF_ACCEPT)
 		return ret;
 out:
 	/* We've seen it coming out the other side: confirm it */
-	return nf_conntrack_confirm(pskb);
+	return nf_conntrack_confirm(skb);
 }
 
 static unsigned int ipv6_defrag(unsigned int hooknum,
-				struct sk_buff **pskb,
+				struct sk_buff *skb,
 				const struct net_device *in,
 				const struct net_device *out,
 				int (*okfn)(struct sk_buff *))
···
 	struct sk_buff *reasm;
 
 	/* Previously seen (loopback)?  */
-	if ((*pskb)->nfct)
+	if (skb->nfct)
 		return NF_ACCEPT;
 
-	reasm = nf_ct_frag6_gather(*pskb);
+	reasm = nf_ct_frag6_gather(skb);
 
 	/* queued */
 	if (reasm == NULL)
 		return NF_STOLEN;
 
 	/* error occured or not fragmented */
-	if (reasm == *pskb)
+	if (reasm == skb)
 		return NF_ACCEPT;
 
 	nf_ct_frag6_output(hooknum, reasm, (struct net_device *)in,
···
 }
 
 static unsigned int ipv6_conntrack_in(unsigned int hooknum,
-				      struct sk_buff **pskb,
+				      struct sk_buff *skb,
 				      const struct net_device *in,
 				      const struct net_device *out,
 				      int (*okfn)(struct sk_buff *))
 {
-	struct sk_buff *reasm = (*pskb)->nfct_reasm;
+	struct sk_buff *reasm = skb->nfct_reasm;
 
 	/* This packet is fragmented and has reassembled packet. */
 	if (reasm) {
···
 		if (!reasm->nfct) {
 			unsigned int ret;
 
-			ret = nf_conntrack_in(PF_INET6, hooknum, &reasm);
+			ret = nf_conntrack_in(PF_INET6, hooknum, reasm);
 			if (ret != NF_ACCEPT)
 				return ret;
 		}
 		nf_conntrack_get(reasm->nfct);
-		(*pskb)->nfct = reasm->nfct;
-		(*pskb)->nfctinfo = reasm->nfctinfo;
+		skb->nfct = reasm->nfct;
+		skb->nfctinfo = reasm->nfctinfo;
 		return NF_ACCEPT;
 	}
 
-	return nf_conntrack_in(PF_INET6, hooknum, pskb);
+	return nf_conntrack_in(PF_INET6, hooknum, skb);
 }
 
 static unsigned int ipv6_conntrack_local(unsigned int hooknum,
-					 struct sk_buff **pskb,
+					 struct sk_buff *skb,
 					 const struct net_device *in,
 					 const struct net_device *out,
 					 int (*okfn)(struct sk_buff *))
 {
 	/* root is playing with raw sockets. */
-	if ((*pskb)->len < sizeof(struct ipv6hdr)) {
+	if (skb->len < sizeof(struct ipv6hdr)) {
 		if (net_ratelimit())
 			printk("ipv6_conntrack_local: packet too short\n");
 		return NF_ACCEPT;
 	}
-	return ipv6_conntrack_in(hooknum, pskb, in, out, okfn);
+	return ipv6_conntrack_in(hooknum, skb, in, out, okfn);
 }
 
 static struct nf_hook_ops ipv6_conntrack_ops[] = {
···
 	{
 		.ctl_name	= NET_NF_CONNTRACK_FRAG6_TIMEOUT,
 		.procname	= "nf_conntrack_frag6_timeout",
-		.data		= &nf_ct_frag6_timeout,
+		.data		= &nf_frags_ctl.timeout,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,
···
 	{
 		.ctl_name	= NET_NF_CONNTRACK_FRAG6_LOW_THRESH,
 		.procname	= "nf_conntrack_frag6_low_thresh",
-		.data		= &nf_ct_frag6_low_thresh,
+		.data		= &nf_frags_ctl.low_thresh,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec,
···
 	{
 		.ctl_name	= NET_NF_CONNTRACK_FRAG6_HIGH_THRESH,
 		.procname	= "nf_conntrack_frag6_high_thresh",
-		.data		= &nf_ct_frag6_high_thresh,
+		.data		= &nf_frags_ctl.high_thresh,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec,

net/ipv6/netfilter/nf_conntrack_reasm.c

···
 
 #include <net/sock.h>
 #include <net/snmp.h>
+#include <net/inet_frag.h>
 
 #include <net/ipv6.h>
 #include <net/protocol.h>
···
 #define NF_CT_FRAG6_LOW_THRESH 196608  /* == 192*1024 */
 #define NF_CT_FRAG6_TIMEOUT IPV6_FRAG_TIMEOUT
 
-unsigned int nf_ct_frag6_high_thresh __read_mostly = 256*1024;
-unsigned int nf_ct_frag6_low_thresh __read_mostly = 192*1024;
-unsigned long nf_ct_frag6_timeout __read_mostly = IPV6_FRAG_TIMEOUT;
-
 struct nf_ct_frag6_skb_cb
 {
 	struct inet6_skb_parm	h;
···
 
 struct nf_ct_frag6_queue
 {
-	struct hlist_node	list;
-	struct list_head	lru_list;	/* lru list member	*/
+	struct inet_frag_queue	q;
 
 	__be32			id;		/* fragment id		*/
 	struct in6_addr		saddr;
 	struct in6_addr		daddr;
 
-	spinlock_t		lock;
-	atomic_t		refcnt;
-	struct timer_list	timer;		/* expire timer		*/
-	struct sk_buff		*fragments;
-	int			len;
-	int			meat;
-	ktime_t			stamp;
 	unsigned int		csum;
-	__u8			last_in;	/* has first/last segment arrived? */
-#define COMPLETE		4
-#define FIRST_IN		2
-#define LAST_IN			1
 	__u16			nhoffset;
 };
 
-/* Hash table. */
+struct inet_frags_ctl nf_frags_ctl __read_mostly = {
+	.high_thresh	 = 256 * 1024,
+	.low_thresh	 = 192 * 1024,
+	.timeout	 = IPV6_FRAG_TIMEOUT,
+	.secret_interval = 10 * 60 * HZ,
+};
 
-#define FRAG6Q_HASHSZ	64
-
-static struct hlist_head nf_ct_frag6_hash[FRAG6Q_HASHSZ];
-static DEFINE_RWLOCK(nf_ct_frag6_lock);
-static u32 nf_ct_frag6_hash_rnd;
-static LIST_HEAD(nf_ct_frag6_lru_list);
-int nf_ct_frag6_nqueues = 0;
-
-static __inline__ void __fq_unlink(struct nf_ct_frag6_queue *fq)
-{
-	hlist_del(&fq->list);
-	list_del(&fq->lru_list);
-	nf_ct_frag6_nqueues--;
-}
-
-static __inline__ void fq_unlink(struct nf_ct_frag6_queue *fq)
-{
-	write_lock(&nf_ct_frag6_lock);
-	__fq_unlink(fq);
-	write_unlock(&nf_ct_frag6_lock);
-}
+static struct inet_frags nf_frags;
 
 static unsigned int ip6qhashfn(__be32 id, struct in6_addr *saddr,
 			       struct in6_addr *daddr)
···
 
 	a += JHASH_GOLDEN_RATIO;
 	b += JHASH_GOLDEN_RATIO;
-	c += nf_ct_frag6_hash_rnd;
+	c += nf_frags.rnd;
 	__jhash_mix(a, b, c);
 
 	a += (__force u32)saddr->s6_addr32[3];
···
 	c += (__force u32)id;
 	__jhash_mix(a, b, c);
 
-	return c & (FRAG6Q_HASHSZ - 1);
+	return c & (INETFRAGS_HASHSZ - 1);
 }
 
-static struct timer_list nf_ct_frag6_secret_timer;
-int nf_ct_frag6_secret_interval = 10 * 60 * HZ;
-
-static void nf_ct_frag6_secret_rebuild(unsigned long dummy)
+static unsigned int nf_hashfn(struct inet_frag_queue *q)
 {
-	unsigned long now = jiffies;
-	int i;
+	struct nf_ct_frag6_queue *nq;
 
-	write_lock(&nf_ct_frag6_lock);
-	get_random_bytes(&nf_ct_frag6_hash_rnd, sizeof(u32));
-	for (i = 0; i < FRAG6Q_HASHSZ; i++) {
-		struct nf_ct_frag6_queue *q;
-		struct hlist_node *p, *n;
-
-		hlist_for_each_entry_safe(q, p, n, &nf_ct_frag6_hash[i], list) {
-			unsigned int hval = ip6qhashfn(q->id,
-						       &q->saddr,
-						       &q->daddr);
-			if (hval != i) {
-				hlist_del(&q->list);
-				/* Relink to new hash chain. */
-				hlist_add_head(&q->list,
-					       &nf_ct_frag6_hash[hval]);
-			}
-		}
-	}
-	write_unlock(&nf_ct_frag6_lock);
-
-	mod_timer(&nf_ct_frag6_secret_timer, now + nf_ct_frag6_secret_interval);
+	nq = container_of(q, struct nf_ct_frag6_queue, q);
+	return ip6qhashfn(nq->id, &nq->saddr, &nq->daddr);
 }
 
-atomic_t nf_ct_frag6_mem = ATOMIC_INIT(0);
+static void nf_skb_free(struct sk_buff *skb)
+{
+	if (NFCT_FRAG6_CB(skb)->orig)
+		kfree_skb(NFCT_FRAG6_CB(skb)->orig);
+}
 
 /* Memory Tracking Functions. */
 static inline void frag_kfree_skb(struct sk_buff *skb, unsigned int *work)
 {
 	if (work)
 		*work -= skb->truesize;
-	atomic_sub(skb->truesize, &nf_ct_frag6_mem);
-	if (NFCT_FRAG6_CB(skb)->orig)
-		kfree_skb(NFCT_FRAG6_CB(skb)->orig);
-
+	atomic_sub(skb->truesize, &nf_frags.mem);
+	nf_skb_free(skb);
 	kfree_skb(skb);
 }
 
-static inline void frag_free_queue(struct nf_ct_frag6_queue *fq,
-				   unsigned int *work)
+static void nf_frag_free(struct inet_frag_queue *q)
 {
-	if (work)
-		*work -= sizeof(struct nf_ct_frag6_queue);
-	atomic_sub(sizeof(struct nf_ct_frag6_queue), &nf_ct_frag6_mem);
-	kfree(fq);
+	kfree(container_of(q, struct nf_ct_frag6_queue, q));
 }
 
 static inline struct nf_ct_frag6_queue *frag_alloc_queue(void)
 {
-	struct nf_ct_frag6_queue *fq = kmalloc(sizeof(struct nf_ct_frag6_queue), GFP_ATOMIC);
+	struct nf_ct_frag6_queue *fq;
 
-	if (!fq)
+	fq = kzalloc(sizeof(struct nf_ct_frag6_queue), GFP_ATOMIC);
+	if (fq == NULL)
 		return NULL;
-	atomic_add(sizeof(struct nf_ct_frag6_queue), &nf_ct_frag6_mem);
+	atomic_add(sizeof(struct nf_ct_frag6_queue), &nf_frags.mem);
 	return fq;
 }
 
 /* Destruction primitives. */
 
-/* Complete destruction of fq. */
-static void nf_ct_frag6_destroy(struct nf_ct_frag6_queue *fq,
-				unsigned int *work)
+static __inline__ void fq_put(struct nf_ct_frag6_queue *fq)
 {
-	struct sk_buff *fp;
-
-	BUG_TRAP(fq->last_in&COMPLETE);
-	BUG_TRAP(del_timer(&fq->timer) == 0);
-
-	/* Release all fragment data. */
-	fp = fq->fragments;
-	while (fp) {
-		struct sk_buff *xp = fp->next;
-
-		frag_kfree_skb(fp, work);
-		fp = xp;
-	}
-
-	frag_free_queue(fq, work);
-}
-
-static __inline__ void fq_put(struct nf_ct_frag6_queue *fq, unsigned int *work)
-{
-	if (atomic_dec_and_test(&fq->refcnt))
-		nf_ct_frag6_destroy(fq, work);
+	inet_frag_put(&fq->q, &nf_frags);
 }
 
 /* Kill fq entry. It is not destroyed immediately,
···
  */
 static __inline__ void fq_kill(struct nf_ct_frag6_queue *fq)
 {
-	if (del_timer(&fq->timer))
-		atomic_dec(&fq->refcnt);
-
-	if (!(fq->last_in & COMPLETE)) {
-		fq_unlink(fq);
-		atomic_dec(&fq->refcnt);
-		fq->last_in |= COMPLETE;
-	}
+	inet_frag_kill(&fq->q, &nf_frags);
 }
 
 static void nf_ct_frag6_evictor(void)
 {
-	struct nf_ct_frag6_queue *fq;
-	struct list_head *tmp;
-	unsigned int work;
-
-	work = atomic_read(&nf_ct_frag6_mem);
-	if (work <= nf_ct_frag6_low_thresh)
-		return;
-
-	work -= nf_ct_frag6_low_thresh;
-	while (work > 0) {
-		read_lock(&nf_ct_frag6_lock);
-		if (list_empty(&nf_ct_frag6_lru_list)) {
-			read_unlock(&nf_ct_frag6_lock);
-			return;
-		}
-		tmp = nf_ct_frag6_lru_list.next;
-		BUG_ON(tmp == NULL);
-		fq = list_entry(tmp, struct nf_ct_frag6_queue, lru_list);
-		atomic_inc(&fq->refcnt);
-		read_unlock(&nf_ct_frag6_lock);
-
-		spin_lock(&fq->lock);
-		if (!(fq->last_in&COMPLETE))
-			fq_kill(fq);
-		spin_unlock(&fq->lock);
-
-		fq_put(fq, &work);
-	}
+	inet_frag_evictor(&nf_frags);
 }
 
 static void nf_ct_frag6_expire(unsigned long data)
 {
 	struct nf_ct_frag6_queue *fq = (struct nf_ct_frag6_queue *) data;
 
-	spin_lock(&fq->lock);
+	spin_lock(&fq->q.lock);
 
-	if (fq->last_in & COMPLETE)
+	if (fq->q.last_in & COMPLETE)
 		goto out;
 
 	fq_kill(fq);
 
 out:
-	spin_unlock(&fq->lock);
-	fq_put(fq, NULL);
+	spin_unlock(&fq->q.lock);
+	fq_put(fq);
 }
 
 /* Creation primitives. */
···
 	struct hlist_node *n;
 #endif
 
-	write_lock(&nf_ct_frag6_lock);
+	write_lock(&nf_frags.lock);
 #ifdef CONFIG_SMP
-	hlist_for_each_entry(fq, n, &nf_ct_frag6_hash[hash], list) {
+	hlist_for_each_entry(fq, n, &nf_frags.hash[hash], q.list) {
 		if (fq->id == fq_in->id &&
 		    ipv6_addr_equal(&fq_in->saddr, &fq->saddr) &&
 		    ipv6_addr_equal(&fq_in->daddr, &fq->daddr)) {
-			atomic_inc(&fq->refcnt);
-			write_unlock(&nf_ct_frag6_lock);
-			fq_in->last_in |= COMPLETE;
-			fq_put(fq_in, NULL);
+			atomic_inc(&fq->q.refcnt);
+			write_unlock(&nf_frags.lock);
+			fq_in->q.last_in |= COMPLETE;
+			fq_put(fq_in);
 			return fq;
 		}
 	}
 #endif
 	fq = fq_in;
 
-	if (!mod_timer(&fq->timer, jiffies + nf_ct_frag6_timeout))
-		atomic_inc(&fq->refcnt);
+	if (!mod_timer(&fq->q.timer, jiffies + nf_frags_ctl.timeout))
+		atomic_inc(&fq->q.refcnt);
 
-	atomic_inc(&fq->refcnt);
-	hlist_add_head(&fq->list, &nf_ct_frag6_hash[hash]);
-	INIT_LIST_HEAD(&fq->lru_list);
-	list_add_tail(&fq->lru_list, &nf_ct_frag6_lru_list);
-	nf_ct_frag6_nqueues++;
-	write_unlock(&nf_ct_frag6_lock);
+	atomic_inc(&fq->q.refcnt);
+	hlist_add_head(&fq->q.list, &nf_frags.hash[hash]);
+	INIT_LIST_HEAD(&fq->q.lru_list);
+	list_add_tail(&fq->q.lru_list, &nf_frags.lru_list);
+	nf_frags.nqueues++;
+	write_unlock(&nf_frags.lock);
 	return fq;
 }
 
···
 		goto oom;
 	}
 
-	memset(fq, 0, sizeof(struct nf_ct_frag6_queue));
-
 	fq->id = id;
 	ipv6_addr_copy(&fq->saddr, src);
 	ipv6_addr_copy(&fq->daddr, dst);
 
-	setup_timer(&fq->timer, nf_ct_frag6_expire, (unsigned long)fq);
-	spin_lock_init(&fq->lock);
-	atomic_set(&fq->refcnt, 1);
+	setup_timer(&fq->q.timer, nf_ct_frag6_expire, (unsigned long)fq);
+	spin_lock_init(&fq->q.lock);
+	atomic_set(&fq->q.refcnt, 1);
 
 	return nf_ct_frag6_intern(hash, fq);
 
···
 	struct hlist_node *n;
 	unsigned int hash = ip6qhashfn(id, src, dst);
 
-	read_lock(&nf_ct_frag6_lock);
-	hlist_for_each_entry(fq, n, &nf_ct_frag6_hash[hash], list) {
+	read_lock(&nf_frags.lock);
+	hlist_for_each_entry(fq, n, &nf_frags.hash[hash], q.list) {
 		if (fq->id == id &&
 		    ipv6_addr_equal(src, &fq->saddr) &&
 		    ipv6_addr_equal(dst, &fq->daddr)) {
-			atomic_inc(&fq->refcnt);
-			read_unlock(&nf_ct_frag6_lock);
+			atomic_inc(&fq->q.refcnt);
+			read_unlock(&nf_frags.lock);
 			return fq;
 		}
 	}
-	read_unlock(&nf_ct_frag6_lock);
+	read_unlock(&nf_frags.lock);
 
 	return nf_ct_frag6_create(hash, id, src, dst);
 }
···
 	struct sk_buff *prev, *next;
 	int offset, end;
 
-	if (fq->last_in & COMPLETE) {
+	if (fq->q.last_in & COMPLETE) {
 		pr_debug("Allready completed\n");
 		goto err;
 	}
···
 		/* If we already have some bits beyond end
 		 * or have different end, the segment is corrupted.
 		 */
-		if (end < fq->len ||
-		    ((fq->last_in & LAST_IN) && end != fq->len)) {
+		if (end < fq->q.len ||
+		    ((fq->q.last_in & LAST_IN) && end != fq->q.len)) {
 			pr_debug("already received last fragment\n");
 			goto err;
 		}
-		fq->last_in |= LAST_IN;
-		fq->len = end;
+		fq->q.last_in |= LAST_IN;
+		fq->q.len = end;
 	} else {
 		/* Check if the fragment is rounded to 8 bytes.
 		 * Required by the RFC.
···
 			pr_debug("end of fragment not rounded to 8 bytes.\n");
 			return -1;
 		}
-		if (end > fq->len) {
+		if (end > fq->q.len) {
 			/* Some bits beyond end -> corruption. */
-			if (fq->last_in & LAST_IN) {
+			if (fq->q.last_in & LAST_IN) {
 				pr_debug("last packet already reached.\n");
 				goto err;
 			}
-			fq->len = end;
+			fq->q.len = end;
 		}
 	}
 
···
 	 * this fragment, right?
 	 */
 	prev = NULL;
-	for (next = fq->fragments; next != NULL; next = next->next) {
+	for (next = fq->q.fragments; next != NULL; next = next->next) {
 		if (NFCT_FRAG6_CB(next)->offset >= offset)
 			break;	/* bingo! */
 		prev = next;
···
 
 			/* next fragment */
 			NFCT_FRAG6_CB(next)->offset += i;
-			fq->meat -= i;
+			fq->q.meat -= i;
 			if (next->ip_summed != CHECKSUM_UNNECESSARY)
 				next->ip_summed = CHECKSUM_NONE;
 			break;
···
 			if (prev)
 				prev->next = next;
 			else
-				fq->fragments = next;
+				fq->q.fragments = next;
 
-			fq->meat -= free_it->len;
+			fq->q.meat -= free_it->len;
 			frag_kfree_skb(free_it, NULL);
 		}
 	}
···
 	if (prev)
 		prev->next = skb;
 	else
-		fq->fragments = skb;
+		fq->q.fragments = skb;
 
 	skb->dev = NULL;
-	fq->stamp = skb->tstamp;
-	fq->meat += skb->len;
-	atomic_add(skb->truesize, &nf_ct_frag6_mem);
+	fq->q.stamp = skb->tstamp;
+	fq->q.meat += skb->len;
+	atomic_add(skb->truesize, &nf_frags.mem);
 
 	/* The first fragment.
 	 * nhoffset is obtained from the first fragment, of course.
 	 */
 	if (offset == 0) {
 		fq->nhoffset = nhoff;
-		fq->last_in |= FIRST_IN;
+		fq->q.last_in |= FIRST_IN;
 	}
-	write_lock(&nf_ct_frag6_lock);
-	list_move_tail(&fq->lru_list, &nf_ct_frag6_lru_list);
-	write_unlock(&nf_ct_frag6_lock);
+	write_lock(&nf_frags.lock);
+	list_move_tail(&fq->q.lru_list, &nf_frags.lru_list);
+	write_unlock(&nf_frags.lock);
 	return 0;
 
 err:
···
 static struct sk_buff *
 nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 {
-	struct sk_buff *fp, *op, *head = fq->fragments;
+	struct sk_buff *fp, *op, *head = fq->q.fragments;
 	int    payload_len;
 
 	fq_kill(fq);
···
 
 	/* Unfragmented part is taken from the first segment. */
 	payload_len = ((head->data - skb_network_header(head)) -
-		       sizeof(struct ipv6hdr) + fq->len -
+		       sizeof(struct ipv6hdr) + fq->q.len -
 		       sizeof(struct frag_hdr));
 	if (payload_len > IPV6_MAXPLEN) {
 		pr_debug("payload len is too large.\n");
···
 		clone->ip_summed = head->ip_summed;
 
 		NFCT_FRAG6_CB(clone)->orig = NULL;
-		atomic_add(clone->truesize, &nf_ct_frag6_mem);
+		atomic_add(clone->truesize, &nf_frags.mem);
 	}
 
 	/* We have to remove fragment header from datagram and to relocate
···
 	skb_shinfo(head)->frag_list = head->next;
 	skb_reset_transport_header(head);
 	skb_push(head, head->data - skb_network_header(head));
-	atomic_sub(head->truesize, &nf_ct_frag6_mem);
+	atomic_sub(head->truesize, &nf_frags.mem);
 
 	for (fp=head->next; fp; fp = fp->next) {
 		head->data_len += fp->len;
···
 		else if (head->ip_summed == CHECKSUM_COMPLETE)
 			head->csum = csum_add(head->csum, fp->csum);
 		head->truesize += fp->truesize;
-		atomic_sub(fp->truesize, &nf_ct_frag6_mem);
+		atomic_sub(fp->truesize, &nf_frags.mem);
 	}
 
 	head->next = NULL;
 	head->dev = dev;
-	head->tstamp = fq->stamp;
+	head->tstamp = fq->q.stamp;
 	ipv6_hdr(head)->payload_len = htons(payload_len);
 
 	/* Yes, and fold redundant checksum back. 8) */
···
 					  skb_network_header_len(head),
 					  head->csum);
 
-	fq->fragments = NULL;
+	fq->q.fragments = NULL;
 
 	/* all original skbs are linked into the NFCT_FRAG6_CB(head).orig */
 	fp = skb_shinfo(head)->frag_list;
···
 		goto ret_orig;
 	}
 
-	if (atomic_read(&nf_ct_frag6_mem) > nf_ct_frag6_high_thresh)
+	if (atomic_read(&nf_frags.mem) > nf_frags_ctl.high_thresh)
 		nf_ct_frag6_evictor();
 
 	fq = fq_find(fhdr->identification, &hdr->saddr, &hdr->daddr);
···
 		goto ret_orig;
 	}
 
-	spin_lock(&fq->lock);
+	spin_lock(&fq->q.lock);
 
 	if (nf_ct_frag6_queue(fq, clone, fhdr, nhoff) < 0) {
-		spin_unlock(&fq->lock);
+		spin_unlock(&fq->q.lock);
 		pr_debug("Can't insert skb to queue\n");
-		fq_put(fq, NULL);
+		fq_put(fq);
 		goto ret_orig;
 	}
 
-	if (fq->last_in == (FIRST_IN|LAST_IN) && fq->meat == fq->len) {
+	if (fq->q.last_in == (FIRST_IN|LAST_IN) && fq->q.meat == fq->q.len) {
 		ret_skb = nf_ct_frag6_reasm(fq, dev);
 		if (ret_skb == NULL)
 			pr_debug("Can't reassemble fragmented packets\n");
 	}
-	spin_unlock(&fq->lock);
+	spin_unlock(&fq->q.lock);
 
-	fq_put(fq, NULL);
+	fq_put(fq);
 	return ret_skb;
 
 ret_orig:
···
 
 int nf_ct_frag6_init(void)
 {
-	nf_ct_frag6_hash_rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
-				   (jiffies ^ (jiffies >> 6)));
-
-	setup_timer(&nf_ct_frag6_secret_timer, nf_ct_frag6_secret_rebuild, 0);
-	nf_ct_frag6_secret_timer.expires = jiffies
-					   + nf_ct_frag6_secret_interval;
-	add_timer(&nf_ct_frag6_secret_timer);
+	nf_frags.ctl = &nf_frags_ctl;
+	nf_frags.hashfn = nf_hashfn;
+	nf_frags.destructor = nf_frag_free;
+	nf_frags.skb_free = nf_skb_free;
+	nf_frags.qsize = sizeof(struct nf_ct_frag6_queue);
+	inet_frags_init(&nf_frags);
 
 	return 0;
 }
 
 void nf_ct_frag6_cleanup(void)
 {
-	del_timer(&nf_ct_frag6_secret_timer);
-	nf_ct_frag6_low_thresh = 0;
+	inet_frags_fini(&nf_frags);
+
+	nf_frags_ctl.low_thresh = 0;
 	nf_ct_frag6_evictor();
 }

net/ipv6/proc.c

···
 	seq_printf(seq, "RAW6: inuse %d\n",
 		       fold_prot_inuse(&rawv6_prot));
 	seq_printf(seq, "FRAG6: inuse %d memory %d\n",
-		       ip6_frag_nqueues, atomic_read(&ip6_frag_mem));
+		       ip6_frag_nqueues(), ip6_frag_mem());
 	return 0;
 }
 

net/ipv6/reassembly.c

···
 #include <linux/icmpv6.h>
 #include <linux/random.h>
 #include <linux/jhash.h>
+#include <linux/skbuff.h>
 
 #include <net/sock.h>
 #include <net/snmp.h>
···
 #include <net/rawv6.h>
 #include <net/ndisc.h>
 #include <net/addrconf.h>
-
-int sysctl_ip6frag_high_thresh __read_mostly = 256*1024;
-int sysctl_ip6frag_low_thresh __read_mostly = 192*1024;
-
-int sysctl_ip6frag_time __read_mostly = IPV6_FRAG_TIMEOUT;
+#include <net/inet_frag.h>
 
 struct ip6frag_skb_cb
 {
···
 
 struct frag_queue
 {
-	struct hlist_node	list;
-	struct list_head lru_list;		/* lru list member	*/
+	struct inet_frag_queue	q;
 
 	__be32			id;		/* fragment id		*/
 	struct in6_addr		saddr;
 	struct in6_addr		daddr;
 
-	spinlock_t		lock;
-	atomic_t		refcnt;
-	struct timer_list	timer;		/* expire timer		*/
-	struct sk_buff		*fragments;
-	int			len;
-	int			meat;
 	int			iif;
-	ktime_t			stamp;
 	unsigned int		csum;
-	__u8			last_in;	/* has first/last segment arrived? */
-#define COMPLETE		4
-#define FIRST_IN		2
-#define LAST_IN			1
 	__u16			nhoffset;
 };
 
-/* Hash table. */
+struct inet_frags_ctl ip6_frags_ctl __read_mostly = {
+	.high_thresh 	 = 256 * 1024,
+	.low_thresh	 = 192 * 1024,
+	.timeout	 = IPV6_FRAG_TIMEOUT,
+	.secret_interval = 10 * 60 * HZ,
+};
 
-#define IP6Q_HASHSZ	64
+static struct inet_frags ip6_frags;
 
-static struct hlist_head ip6_frag_hash[IP6Q_HASHSZ];
-static DEFINE_RWLOCK(ip6_frag_lock);
-static u32 ip6_frag_hash_rnd;
-static LIST_HEAD(ip6_frag_lru_list);
-int ip6_frag_nqueues = 0;
-
-static __inline__ void __fq_unlink(struct frag_queue *fq)
+int ip6_frag_nqueues(void)
 {
-	hlist_del(&fq->list);
-	list_del(&fq->lru_list);
-	ip6_frag_nqueues--;
+	return ip6_frags.nqueues;
 }
 
-static __inline__ void fq_unlink(struct frag_queue *fq)
+int ip6_frag_mem(void)
 {
-	write_lock(&ip6_frag_lock);
-	__fq_unlink(fq);
-	write_unlock(&ip6_frag_lock);
+	return atomic_read(&ip6_frags.mem);
 }
+
+static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
+			  struct net_device *dev);
 
 /*
  * callers should be careful not to use the hash value outside the ipfrag_lock
···
 
 	a += JHASH_GOLDEN_RATIO;
 	b += JHASH_GOLDEN_RATIO;
-	c += ip6_frag_hash_rnd;
+	c += ip6_frags.rnd;
 	__jhash_mix(a, b, c);
 
 	a += (__force u32)saddr->s6_addr32[3];
···
 	c += (__force u32)id;
 	__jhash_mix(a, b, c);
 
-	return c & (IP6Q_HASHSZ - 1);
+	return c & (INETFRAGS_HASHSZ - 1);
 }
 
-static struct timer_list ip6_frag_secret_timer;
-int sysctl_ip6frag_secret_interval __read_mostly = 10 * 60 * HZ;
-
-static void ip6_frag_secret_rebuild(unsigned long dummy)
+static unsigned int ip6_hashfn(struct inet_frag_queue *q)
 {
-	unsigned long now = jiffies;
-	int i;
+	struct frag_queue *fq;
 
-	write_lock(&ip6_frag_lock);
-	get_random_bytes(&ip6_frag_hash_rnd, sizeof(u32));
-	for (i = 0; i < IP6Q_HASHSZ; i++) {
-		struct frag_queue *q;
-		struct hlist_node *p, *n;
-
-		hlist_for_each_entry_safe(q, p, n, &ip6_frag_hash[i], list) {
-			unsigned int hval = ip6qhashfn(q->id,
-						       &q->saddr,
-						       &q->daddr);
-
-			if (hval != i) {
-				hlist_del(&q->list);
-
-				/* Relink to new hash chain. */
-				hlist_add_head(&q->list,
-					       &ip6_frag_hash[hval]);
-
-			}
-		}
-	}
-	write_unlock(&ip6_frag_lock);
-
-	mod_timer(&ip6_frag_secret_timer, now + sysctl_ip6frag_secret_interval);
+	fq = container_of(q, struct frag_queue, q);
+	return ip6qhashfn(fq->id, &fq->saddr, &fq->daddr);
 }
-
-atomic_t ip6_frag_mem = ATOMIC_INIT(0);
 
 /* Memory Tracking Functions. */
 static inline void frag_kfree_skb(struct sk_buff *skb, int *work)
 {
 	if (work)
 		*work -= skb->truesize;
-	atomic_sub(skb->truesize, &ip6_frag_mem);
+	atomic_sub(skb->truesize, &ip6_frags.mem);
 	kfree_skb(skb);
 }
 
-static inline void frag_free_queue(struct frag_queue *fq, int *work)
+static void ip6_frag_free(struct inet_frag_queue *fq)
 {
-	if (work)
-		*work -= sizeof(struct frag_queue);
-	atomic_sub(sizeof(struct frag_queue), &ip6_frag_mem);
-	kfree(fq);
+	kfree(container_of(fq, struct frag_queue, q));
 }
 
 static inline struct frag_queue *frag_alloc_queue(void)
···
 
 	if(!fq)
 		return NULL;
-	atomic_add(sizeof(struct frag_queue), &ip6_frag_mem);
+	atomic_add(sizeof(struct frag_queue), &ip6_frags.mem);
 	return fq;
 }
 
 /* Destruction primitives. */
 
-/* Complete destruction of fq. */
-static void ip6_frag_destroy(struct frag_queue *fq, int *work)
+static __inline__ void fq_put(struct frag_queue *fq)
 {
-	struct sk_buff *fp;
-
-	BUG_TRAP(fq->last_in&COMPLETE);
-	BUG_TRAP(del_timer(&fq->timer) == 0);
-
-	/* Release all fragment data. */
-	fp = fq->fragments;
-	while (fp) {
-		struct sk_buff *xp = fp->next;
-
-		frag_kfree_skb(fp, work);
-		fp = xp;
-	}
-
-	frag_free_queue(fq, work);
-}
-
-static __inline__ void fq_put(struct frag_queue *fq, int *work)
-{
-	if (atomic_dec_and_test(&fq->refcnt))
-		ip6_frag_destroy(fq, work);
+	inet_frag_put(&fq->q, &ip6_frags);
 }
 
 /* Kill fq entry. It is not destroyed immediately,
···
  */
 static __inline__ void fq_kill(struct frag_queue *fq)
 {
-	if (del_timer(&fq->timer))
-		atomic_dec(&fq->refcnt);
-
-	if (!(fq->last_in & COMPLETE)) {
-		fq_unlink(fq);
-		atomic_dec(&fq->refcnt);
-		fq->last_in |= COMPLETE;
-	}
+	inet_frag_kill(&fq->q, &ip6_frags);
 }
 
 static void ip6_evictor(struct inet6_dev *idev)
 {
-	struct frag_queue *fq;
-	struct list_head *tmp;
-	int work;
+	int evicted;
 
-	work = atomic_read(&ip6_frag_mem) - sysctl_ip6frag_low_thresh;
-	if (work <= 0)
-		return;
-
-	while(work > 0) {
-		read_lock(&ip6_frag_lock);
-		if (list_empty(&ip6_frag_lru_list)) {
-			read_unlock(&ip6_frag_lock);
-			return;
-		}
-		tmp = ip6_frag_lru_list.next;
-		fq = list_entry(tmp, struct frag_queue, lru_list);
-		atomic_inc(&fq->refcnt);
-		read_unlock(&ip6_frag_lock);
-
-		spin_lock(&fq->lock);
-		if (!(fq->last_in&COMPLETE))
-			fq_kill(fq);
-		spin_unlock(&fq->lock);
-
-		fq_put(fq, &work);
-		IP6_INC_STATS_BH(idev, IPSTATS_MIB_REASMFAILS);
-	}
+	evicted = inet_frag_evictor(&ip6_frags);
+	if (evicted)
+		IP6_ADD_STATS_BH(idev, IPSTATS_MIB_REASMFAILS, evicted);
 }
 
 static void ip6_frag_expire(unsigned long data)
···
 	struct frag_queue *fq = (struct frag_queue *) data;
 	struct net_device *dev = NULL;
 
-	spin_lock(&fq->lock);
+	spin_lock(&fq->q.lock);
 
-	if (fq->last_in & COMPLETE)
+	if (fq->q.last_in & COMPLETE)
 		goto out;
 
 	fq_kill(fq);
···
 	rcu_read_unlock();
 
 	/* Don't send error if the first segment did not arrive. */
-	if (!(fq->last_in&FIRST_IN) || !fq->fragments)
+	if (!(fq->q.last_in&FIRST_IN) || !fq->q.fragments)
 		goto out;
 
 	/*
···
 	   segment was received. And do not use fq->dev
 	   pointer directly, device might already disappeared.
 	 */
-	fq->fragments->dev = dev;
-	icmpv6_send(fq->fragments, ICMPV6_TIME_EXCEED, ICMPV6_EXC_FRAGTIME, 0, dev);
+	fq->q.fragments->dev = dev;
+	icmpv6_send(fq->q.fragments, ICMPV6_TIME_EXCEED, ICMPV6_EXC_FRAGTIME, 0, dev);
 out:
 	if (dev)
 		dev_put(dev);
-	spin_unlock(&fq->lock);
-	fq_put(fq, NULL);
+	spin_unlock(&fq->q.lock);
+	fq_put(fq);
 }
 
 /* Creation primitives. */
···
 	struct hlist_node *n;
 #endif
 
-	write_lock(&ip6_frag_lock);
+	write_lock(&ip6_frags.lock);
 	hash = ip6qhashfn(fq_in->id, &fq_in->saddr, &fq_in->daddr);
 #ifdef CONFIG_SMP
-	hlist_for_each_entry(fq, n, &ip6_frag_hash[hash], list) {
+	hlist_for_each_entry(fq, n, &ip6_frags.hash[hash], q.list) {
 		if (fq->id == fq_in->id &&
 		    ipv6_addr_equal(&fq_in->saddr, &fq->saddr) &&
 		    ipv6_addr_equal(&fq_in->daddr, &fq->daddr)) {
-			atomic_inc(&fq->refcnt);
-			write_unlock(&ip6_frag_lock);
-			fq_in->last_in |= COMPLETE;
-			fq_put(fq_in, NULL);
+			atomic_inc(&fq->q.refcnt);
+			write_unlock(&ip6_frags.lock);
+			fq_in->q.last_in |= COMPLETE;
+			fq_put(fq_in);
 			return fq;
 		}
 	}
 #endif
 	fq = fq_in;
 
-	if (!mod_timer(&fq->timer, jiffies + sysctl_ip6frag_time))
-		atomic_inc(&fq->refcnt);
+	if (!mod_timer(&fq->q.timer, jiffies + ip6_frags_ctl.timeout))
+		atomic_inc(&fq->q.refcnt);
 
-	atomic_inc(&fq->refcnt);
-	hlist_add_head(&fq->list, &ip6_frag_hash[hash]);
-	INIT_LIST_HEAD(&fq->lru_list);
-	list_add_tail(&fq->lru_list, &ip6_frag_lru_list);
-	ip6_frag_nqueues++;
-	write_unlock(&ip6_frag_lock);
+	atomic_inc(&fq->q.refcnt);
+	hlist_add_head(&fq->q.list, &ip6_frags.hash[hash]);
+	INIT_LIST_HEAD(&fq->q.lru_list);
+	list_add_tail(&fq->q.lru_list, &ip6_frags.lru_list);
+	ip6_frags.nqueues++;
+	write_unlock(&ip6_frags.lock);
 	return fq;
 }
 
···
 	ipv6_addr_copy(&fq->saddr, src);
 	ipv6_addr_copy(&fq->daddr, dst);
 
-	init_timer(&fq->timer);
-	fq->timer.function = ip6_frag_expire;
-	fq->timer.data = (long) fq;
-	spin_lock_init(&fq->lock);
-	atomic_set(&fq->refcnt, 1);
+	init_timer(&fq->q.timer);
+	fq->q.timer.function = ip6_frag_expire;
+	fq->q.timer.data = (long) fq;
+	spin_lock_init(&fq->q.lock);
+	atomic_set(&fq->q.refcnt, 1);
 
 	return ip6_frag_intern(fq);
 
···
 	struct hlist_node *n;
 	unsigned int hash;
 
-	read_lock(&ip6_frag_lock);
+	read_lock(&ip6_frags.lock);
 	hash = ip6qhashfn(id, src, dst);
-	hlist_for_each_entry(fq, n, &ip6_frag_hash[hash], list) {
+	hlist_for_each_entry(fq, n, &ip6_frags.hash[hash], q.list) {
 		if (fq->id == id &&
 		    ipv6_addr_equal(src, &fq->saddr) &&
 		    ipv6_addr_equal(dst, &fq->daddr)) {
-			atomic_inc(&fq->refcnt);
-			read_unlock(&ip6_frag_lock);
+			atomic_inc(&fq->q.refcnt);
+			read_unlock(&ip6_frags.lock);
 			return fq;
 		}
 	}
-	read_unlock(&ip6_frag_lock);
+	read_unlock(&ip6_frags.lock);
 
 	return ip6_frag_create(id, src, dst, idev);
 }
 
 
-static void ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
+static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
 			   struct frag_hdr *fhdr, int nhoff)
 {
 	struct sk_buff *prev, *next;
+	struct net_device *dev;
 	int offset, end;
 
-	if (fq->last_in & COMPLETE)
+	if (fq->q.last_in & COMPLETE)
 		goto err;
 
 	offset = ntohs(fhdr->frag_off) & ~0x7;
···
 		icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
 				  ((u8 *)&fhdr->frag_off -
 				   skb_network_header(skb)));
-		return;
+		return -1;
 	}
 
 	if (skb->ip_summed == CHECKSUM_COMPLETE) {
···
 		/* If we already have some bits beyond end
 		 * or have different end, the segment is corrupted.
 		 */
-		if (end < fq->len ||
-		    ((fq->last_in & LAST_IN) && end != fq->len))
+		if (end < fq->q.len ||
+		    ((fq->q.last_in & LAST_IN) && end != fq->q.len))
 			goto err;
-		fq->last_in |= LAST_IN;
-		fq->len = end;
+		fq->q.last_in |= LAST_IN;
+		fq->q.len = end;
 	} else {
 		/* Check if the fragment is rounded to 8 bytes.
 		 * Required by the RFC.
···
 					 IPSTATS_MIB_INHDRERRORS);
 			icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
 					  offsetof(struct ipv6hdr, payload_len));
-			return;
+			return -1;
 		}
-		if (end > fq->len) {
+		if (end > fq->q.len) {
 			/* Some bits beyond end -> corruption. */
-			if (fq->last_in & LAST_IN)
+			if (fq->q.last_in & LAST_IN)
 				goto err;
-			fq->len = end;
+			fq->q.len = end;
 		}
 	}
 
···
 	 * this fragment, right?
 	 */
 	prev = NULL;
-	for(next = fq->fragments; next != NULL; next = next->next) {
+	for(next = fq->q.fragments; next != NULL; next = next->next) {
 		if (FRAG6_CB(next)->offset >= offset)
 			break;	/* bingo! */
 		prev = next;
···
 			if (!pskb_pull(next, i))
 				goto err;
 			FRAG6_CB(next)->offset += i;	/* next fragment */
-			fq->meat -= i;
+			fq->q.meat -= i;
 			if (next->ip_summed != CHECKSUM_UNNECESSARY)
 				next->ip_summed = CHECKSUM_NONE;
 			break;
···
 			if (prev)
 				prev->next = next;
 			else
-				fq->fragments = next;
+				fq->q.fragments = next;
 
-			fq->meat -= free_it->len;
+			fq->q.meat -= free_it->len;
 			frag_kfree_skb(free_it, NULL);
 		}
 	}
···
 	if (prev)
 		prev->next = skb;
 	else
-		fq->fragments = skb;
+		fq->q.fragments = skb;
 
-	if (skb->dev)
-		fq->iif = skb->dev->ifindex;
-	skb->dev = NULL;
-	fq->stamp = skb->tstamp;
-	fq->meat += skb->len;
-	atomic_add(skb->truesize, &ip6_frag_mem);
+	dev = skb->dev;
+	if (dev) {
+		fq->iif = dev->ifindex;
+		skb->dev = NULL;
+	}
+	fq->q.stamp = skb->tstamp;
+	fq->q.meat += skb->len;
+	atomic_add(skb->truesize, &ip6_frags.mem);
 
 	/* The first fragment.
 	 * nhoffset is obtained from the first fragment, of course.
 	 */
 	if (offset == 0) {
 		fq->nhoffset = nhoff;
-		fq->last_in |= FIRST_IN;
+		fq->q.last_in |= FIRST_IN;
 	}
-	write_lock(&ip6_frag_lock);
-	list_move_tail(&fq->lru_list, &ip6_frag_lru_list);
-	write_unlock(&ip6_frag_lock);
-	return;
+
+	if (fq->q.last_in == (FIRST_IN | LAST_IN) && fq->q.meat == fq->q.len)
+		return ip6_frag_reasm(fq, prev, dev);
+
+	write_lock(&ip6_frags.lock);
+	list_move_tail(&fq->q.lru_list, &ip6_frags.lru_list);
+	write_unlock(&ip6_frags.lock);
+	return -1;
 
 err:
 	IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_REASMFAILS);
 	kfree_skb(skb);
+	return -1;
 }
 
 /*
···
  *	queue is eligible for reassembly i.e. it is not COMPLETE,
  *	the last and the first frames arrived and all the bits are here.
  */
-static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff **skb_in,
+static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
 			  struct net_device *dev)
 {
-	struct sk_buff *fp, *head = fq->fragments;
+	struct sk_buff *fp, *head = fq->q.fragments;
 	int    payload_len;
 	unsigned int nhoff;
 
 	fq_kill(fq);
+
+	/* Make the one we just received the head. */
+	if (prev) {
+		head = prev->next;
+		fp = skb_clone(head, GFP_ATOMIC);
+
+		if (!fp)
+			goto out_oom;
+
+		fp->next = head->next;
+		prev->next = fp;
+
+		skb_morph(head, fq->q.fragments);
+		head->next = fq->q.fragments->next;
+
+		kfree_skb(fq->q.fragments);
+		fq->q.fragments = head;
+	}
 
 	BUG_TRAP(head != NULL);
 	BUG_TRAP(FRAG6_CB(head)->offset == 0);
 
 	/* Unfragmented part is taken from the first segment. */
 	payload_len = ((head->data - skb_network_header(head)) -
-		       sizeof(struct ipv6hdr) + fq->len -
+		       sizeof(struct ipv6hdr) + fq->q.len -
 		       sizeof(struct frag_hdr));
 	if (payload_len > IPV6_MAXPLEN)
 		goto out_oversize;
···
 		head->len -= clone->len;
 		clone->csum = 0;
 		clone->ip_summed = head->ip_summed;
-		atomic_add(clone->truesize, &ip6_frag_mem);
+		atomic_add(clone->truesize, &ip6_frags.mem);
 	}
 
 	/* We have to remove fragment header from datagram and to relocate
···
 	skb_shinfo(head)->frag_list = head->next;
 	skb_reset_transport_header(head);
 	skb_push(head, head->data - skb_network_header(head));
-	atomic_sub(head->truesize, &ip6_frag_mem);
+	atomic_sub(head->truesize, &ip6_frags.mem);
 
 	for (fp=head->next; fp; fp = fp->next) {
 		head->data_len += fp->len;
···
 		else if (head->ip_summed == CHECKSUM_COMPLETE)
 			head->csum = csum_add(head->csum, fp->csum);
 		head->truesize += fp->truesize;
-		atomic_sub(fp->truesize, &ip6_frag_mem);
+		atomic_sub(fp->truesize, &ip6_frags.mem);
 	}
 
 	head->next = NULL;
 	head->dev = dev;
-	head->tstamp = fq->stamp;
+	head->tstamp = fq->q.stamp;
 	ipv6_hdr(head)->payload_len = htons(payload_len);
 	IP6CB(head)->nhoff = nhoff;
-
-	*skb_in = head;
 
 	/* Yes, and fold redundant checksum back. 8) */
 	if (head->ip_summed == CHECKSUM_COMPLETE)
···
 	rcu_read_lock();
 	IP6_INC_STATS_BH(__in6_dev_get(dev), IPSTATS_MIB_REASMOKS);
 	rcu_read_unlock();
-	fq->fragments = NULL;
+	fq->q.fragments = NULL;
 	return 1;
 
 out_oversize:
···
 	return -1;
 }
 
-static int ipv6_frag_rcv(struct sk_buff **skbp)
+static int ipv6_frag_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *skbp;
-	struct net_device *dev = skb->dev;
 	struct frag_hdr *fhdr;
 	struct frag_queue *fq;
 	struct ipv6hdr *hdr = ipv6_hdr(skb);
···
 		return 1;
 	}
 
-	if (atomic_read(&ip6_frag_mem) > sysctl_ip6frag_high_thresh)
+	if (atomic_read(&ip6_frags.mem) > ip6_frags_ctl.high_thresh)
 		ip6_evictor(ip6_dst_idev(skb->dst));
 
 	if ((fq = fq_find(fhdr->identification, &hdr->saddr, &hdr->daddr,
 			  ip6_dst_idev(skb->dst))) != NULL) {
-		int ret = -1;
+		int ret;
 
-		spin_lock(&fq->lock);
+		spin_lock(&fq->q.lock);
 
-		ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff);
+		ret = ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff);
 
-		if (fq->last_in == (FIRST_IN|LAST_IN) &&
-		    fq->meat == fq->len)
-			ret = ip6_frag_reasm(fq, skbp, dev);
-
-		spin_unlock(&fq->lock);
-		fq_put(fq, NULL);
+		spin_unlock(&fq->q.lock);
+		fq_put(fq);
 		return ret;
 	}
 
···
 	if (inet6_add_protocol(&frag_protocol, IPPROTO_FRAGMENT) < 0)
 		printk(KERN_ERR "ipv6_frag_init: Could not register protocol\n");
 
-	ip6_frag_hash_rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
-				   (jiffies ^ (jiffies >> 6)));
-
-	init_timer(&ip6_frag_secret_timer);
-	ip6_frag_secret_timer.function = ip6_frag_secret_rebuild;
-	ip6_frag_secret_timer.expires = jiffies + sysctl_ip6frag_secret_interval;
-	add_timer(&ip6_frag_secret_timer);
+	ip6_frags.ctl = &ip6_frags_ctl;
+	ip6_frags.hashfn = ip6_hashfn;
+	ip6_frags.destructor = ip6_frag_free;
+	ip6_frags.skb_free = NULL;
+	ip6_frags.qsize = sizeof(struct frag_queue);
+	inet_frags_init(&ip6_frags);
 }

net/ipv6/route.c

···
 	return rt;
 }
 
-static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
+static struct rt6_info *ip6_pol_route(struct fib6_table *table, int oif,
 					    struct flowi *fl, int flags)
 {
 	struct fib6_node *fn;
···
 	fn = fib6_lookup(&table->tb6_root, &fl->fl6_dst, &fl->fl6_src);
 
 restart:
-	rt = rt6_select(fn, fl->iif, strict | reachable);
+	rt = rt6_select(fn, oif, strict | reachable);
 	BACKTRACK(&fl->fl6_src);
 	if (rt == &ip6_null_entry ||
 	    rt->rt6i_flags & RTF_CACHE)
···
 	rt->u.dst.__use++;
 
 	return rt;
+}
+
+static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
+					    struct flowi *fl, int flags)
+{
+	return ip6_pol_route(table, fl->iif, fl, flags);
 }
 
 void ip6_route_input(struct sk_buff *skb)
···
 static struct rt6_info *ip6_pol_route_output(struct fib6_table *table,
 					     struct flowi *fl, int flags)
 {
-	struct fib6_node *fn;
-	struct rt6_info *rt, *nrt;
-	int strict = 0;
-	int attempts = 3;
-	int err;
-	int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
-
-	strict |= flags & RT6_LOOKUP_F_IFACE;
-
-relookup:
-	read_lock_bh(&table->tb6_lock);
-
-restart_2:
-	fn = fib6_lookup(&table->tb6_root, &fl->fl6_dst, &fl->fl6_src);
-
-restart:
-	rt = rt6_select(fn, fl->oif, strict | reachable);
-	BACKTRACK(&fl->fl6_src);
-	if (rt == &ip6_null_entry ||
-	    rt->rt6i_flags & RTF_CACHE)
-		goto out;
-
-	dst_hold(&rt->u.dst);
-	read_unlock_bh(&table->tb6_lock);
-
-	if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP))
-		nrt = rt6_alloc_cow(rt, &fl->fl6_dst, &fl->fl6_src);
-	else {
-#if CLONE_OFFLINK_ROUTE
-		nrt = rt6_alloc_clone(rt, &fl->fl6_dst);
-#else
-		goto out2;
-#endif
-	}
-
-	dst_release(&rt->u.dst);
-	rt = nrt ? : &ip6_null_entry;
-
-	dst_hold(&rt->u.dst);
-	if (nrt) {
-		err = ip6_ins_rt(nrt);
-		if (!err)
-			goto out2;
-	}
-
-	if (--attempts <= 0)
-		goto out2;
-
-	/*
-	 * Race condition! In the gap, when table->tb6_lock was
-	 * released someone could insert this route.  Relookup.
-	 */
-	dst_release(&rt->u.dst);
-	goto relookup;
-
-out:
-	if (reachable) {
-		reachable = 0;
-		goto restart_2;
-	}
-	dst_hold(&rt->u.dst);
-	read_unlock_bh(&table->tb6_lock);
-out2:
-	rt->u.dst.lastuse = jiffies;
-	rt->u.dst.__use++;
-	return rt;
+	return ip6_pol_route(table, fl->oif, fl, flags);
 }
 
 struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)

net/ipv6/sysctl_net_ipv6.c

···
 #include <net/ndisc.h>
 #include <net/ipv6.h>
 #include <net/addrconf.h>
+#include <net/inet_frag.h>
 
 #ifdef CONFIG_SYSCTL
 
···
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_HIGH_THRESH,
 		.procname	= "ip6frag_high_thresh",
-		.data		= &sysctl_ip6frag_high_thresh,
+		.data		= &ip6_frags_ctl.high_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
···
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_LOW_THRESH,
 		.procname	= "ip6frag_low_thresh",
-		.data		= &sysctl_ip6frag_low_thresh,
+		.data		= &ip6_frags_ctl.low_thresh,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec
···
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_TIME,
 		.procname	= "ip6frag_time",
-		.data		= &sysctl_ip6frag_time,
+		.data		= &ip6_frags_ctl.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,
···
 	{
 		.ctl_name	= NET_IPV6_IP6FRAG_SECRET_INTERVAL,
 		.procname	= "ip6frag_secret_interval",
-		.data		= &sysctl_ip6frag_secret_interval,
+		.data		= &ip6_frags_ctl.secret_interval,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_jiffies,

net/ipv6/tcp_ipv6.c

···
 	return 0;
 }
 
-static int tcp_v6_rcv(struct sk_buff **pskb)
+static int tcp_v6_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct tcphdr *th;
 	struct sock *sk;
 	int ret;

net/ipv6/tunnel6.c

···
 
 EXPORT_SYMBOL(xfrm6_tunnel_deregister);
 
-static int tunnel6_rcv(struct sk_buff **pskb)
+static int tunnel6_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct xfrm6_tunnel *handler;
 
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
···
 	return 0;
 }
 
-static int tunnel46_rcv(struct sk_buff **pskb)
+static int tunnel46_rcv(struct sk_buff *skb)
 {
-	struct sk_buff *skb = *pskb;
 	struct xfrm6_tunnel *handler;
 
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))

net/ipv6/udp.c

···
 	return 0;
 }
 
-int __udp6_lib_rcv(struct sk_buff **pskb, struct hlist_head udptable[],
+int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
 		   int proto)
 {
-	struct sk_buff *skb = *pskb;
 	struct sock *sk;
 	struct udphdr *uh;
 	struct net_device *dev = skb->dev;
···
 	return 0;
 }
 
-static __inline__ int udpv6_rcv(struct sk_buff **pskb)
+static __inline__ int udpv6_rcv(struct sk_buff *skb)
 {
-	return __udp6_lib_rcv(pskb, udp_hash, IPPROTO_UDP);
+	return __udp6_lib_rcv(skb, udp_hash, IPPROTO_UDP);
 }
 
 /*

net/ipv6/udp_impl.h

···
 #include <net/addrconf.h>
 #include <net/inet_common.h>
 
-extern int  	__udp6_lib_rcv(struct sk_buff **, struct hlist_head [], int );
+extern int  	__udp6_lib_rcv(struct sk_buff *, struct hlist_head [], int );
 extern void 	__udp6_lib_err(struct sk_buff *, struct inet6_skb_parm *,
 			       int , int , int , __be32 , struct hlist_head []);
 

net/ipv6/udplite.c

···
 
 DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6) __read_mostly;
 
-static int udplitev6_rcv(struct sk_buff **pskb)
+static int udplitev6_rcv(struct sk_buff *skb)
 {
-	return __udp6_lib_rcv(pskb, udplite_hash, IPPROTO_UDPLITE);
+	return __udp6_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
 }
 
 static void udplitev6_err(struct sk_buff *skb,

net/ipv6/xfrm6_input.c

···
 
 EXPORT_SYMBOL(xfrm6_rcv_spi);
 
-int xfrm6_rcv(struct sk_buff **pskb)
+int xfrm6_rcv(struct sk_buff *skb)
 {
-	return xfrm6_rcv_spi(*pskb, 0);
+	return xfrm6_rcv_spi(skb, 0);
 }
 
 EXPORT_SYMBOL(xfrm6_rcv);

net/ipv6/xfrm6_output.c

···
 	while (likely((err = xfrm6_output_one(skb)) == 0)) {
 		nf_reset(skb);
 
-		err = nf_hook(PF_INET6, NF_IP6_LOCAL_OUT, &skb, NULL,
+		err = nf_hook(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL,
 			      skb->dst->dev, dst_output);
 		if (unlikely(err != 1))
 			break;
···
 		if (!skb->dst->xfrm)
 			return dst_output(skb);
 
-		err = nf_hook(PF_INET6, NF_IP6_POST_ROUTING, &skb, NULL,
+		err = nf_hook(PF_INET6, NF_IP6_POST_ROUTING, skb, NULL,
 			      skb->dst->dev, xfrm6_output_finish2);
 		if (unlikely(err != 1))
 			break;

net/netfilter/core.c

···
 EXPORT_SYMBOL(nf_unregister_hooks);
 
 unsigned int nf_iterate(struct list_head *head,
-			struct sk_buff **skb,
+			struct sk_buff *skb,
 			int hook,
 			const struct net_device *indev,
 			const struct net_device *outdev,
···
 
 /* Returns 1 if okfn() needs to be executed by the caller,
  * -EPERM for NF_DROP, 0 otherwise. */
-int nf_hook_slow(int pf, unsigned int hook, struct sk_buff **pskb,
+int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
 		 struct net_device *indev,
 		 struct net_device *outdev,
 		 int (*okfn)(struct sk_buff *),
···
 
 	elem = &nf_hooks[pf][hook];
 next_hook:
-	verdict = nf_iterate(&nf_hooks[pf][hook], pskb, hook, indev,
+	verdict = nf_iterate(&nf_hooks[pf][hook], skb, hook, indev,
 			     outdev, &elem, okfn, hook_thresh);
 	if (verdict == NF_ACCEPT || verdict == NF_STOP) {
 		ret = 1;
 		goto unlock;
 	} else if (verdict == NF_DROP) {
-		kfree_skb(*pskb);
+		kfree_skb(skb);
 		ret = -EPERM;
 	} else if ((verdict & NF_VERDICT_MASK)  == NF_QUEUE) {
 		NFDEBUG("nf_hook: Verdict = QUEUE.\n");
-		if (!nf_queue(*pskb, elem, pf, hook, indev, outdev, okfn,
+		if (!nf_queue(skb, elem, pf, hook, indev, outdev, okfn,
 			      verdict >> NF_VERDICT_BITS))
 			goto next_hook;
 	}
···
 EXPORT_SYMBOL(nf_hook_slow);
 
 
-int skb_make_writable(struct sk_buff **pskb, unsigned int writable_len)
+int skb_make_writable(struct sk_buff *skb, unsigned int writable_len)
 {
-	struct sk_buff *nskb;
-
-	if (writable_len > (*pskb)->len)
+	if (writable_len > skb->len)
 		return 0;
 
 	/* Not exclusive use of packet?  Must copy. */
-	if (skb_cloned(*pskb) && !skb_clone_writable(*pskb, writable_len))
-		goto copy_skb;
-	if (skb_shared(*pskb))
-		goto copy_skb;
+	if (!skb_cloned(skb)) {
+		if (writable_len <= skb_headlen(skb))
+			return 1;
+	} else if (skb_clone_writable(skb, writable_len))
+		return 1;
 
-	return pskb_may_pull(*pskb, writable_len);
+	if (writable_len <= skb_headlen(skb))
+		writable_len = 0;
+	else
+		writable_len -= skb_headlen(skb);
 
-copy_skb:
-	nskb = skb_copy(*pskb, GFP_ATOMIC);
-	if (!nskb)
-		return 0;
-	BUG_ON(skb_is_nonlinear(nskb));
-
-	/* Rest of kernel will get very unhappy if we pass it a
-	   suddenly-orphaned skbuff */
-	if ((*pskb)->sk)
-		skb_set_owner_w(nskb, (*pskb)->sk);
-	kfree_skb(*pskb);
-	*pskb = nskb;
-	return 1;
+	return !!__pskb_pull_tail(skb, writable_len);
 }
 EXPORT_SYMBOL(skb_make_writable);
 

net/netfilter/nf_conntrack_amanda.c

···
 module_param(ts_algo, charp, 0400);
 MODULE_PARM_DESC(ts_algo, "textsearch algorithm to use (default kmp)");
 
-unsigned int (*nf_nat_amanda_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
 				   enum ip_conntrack_info ctinfo,
 				   unsigned int matchoff,
 				   unsigned int matchlen,
···
 	},
 };
 
-static int amanda_help(struct sk_buff **pskb,
+static int amanda_help(struct sk_buff *skb,
 		       unsigned int protoff,
 		       struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo)
···
 
 	/* increase the UDP timeout of the master connection as replies from
 	 * Amanda clients to the server can be quite delayed */
-	nf_ct_refresh(ct, *pskb, master_timeout * HZ);
+	nf_ct_refresh(ct, skb, master_timeout * HZ);
 
 	/* No data? */
 	dataoff = protoff + sizeof(struct udphdr);
-	if (dataoff >= (*pskb)->len) {
+	if (dataoff >= skb->len) {
 		if (net_ratelimit())
-			printk("amanda_help: skblen = %u\n", (*pskb)->len);
+			printk("amanda_help: skblen = %u\n", skb->len);
 		return NF_ACCEPT;
 	}
 
 	memset(&ts, 0, sizeof(ts));
-	start = skb_find_text(*pskb, dataoff, (*pskb)->len,
+	start = skb_find_text(skb, dataoff, skb->len,
 			      search[SEARCH_CONNECT].ts, &ts);
 	if (start == UINT_MAX)
 		goto out;
 	start += dataoff + search[SEARCH_CONNECT].len;
 
 	memset(&ts, 0, sizeof(ts));
-	stop = skb_find_text(*pskb, start, (*pskb)->len,
+	stop = skb_find_text(skb, start, skb->len,
 			     search[SEARCH_NEWLINE].ts, &ts);
 	if (stop == UINT_MAX)
 		goto out;
···
 
 	for (i = SEARCH_DATA; i <= SEARCH_INDEX; i++) {
 		memset(&ts, 0, sizeof(ts));
-		off = skb_find_text(*pskb, start, stop, search[i].ts, &ts);
+		off = skb_find_text(skb, start, stop, search[i].ts, &ts);
 		if (off == UINT_MAX)
 			continue;
 		off += start + search[i].len;
 
 		len = min_t(unsigned int, sizeof(pbuf) - 1, stop - off);
-		if (skb_copy_bits(*pskb, off, pbuf, len))
+		if (skb_copy_bits(skb, off, pbuf, len))
 			break;
 		pbuf[len] = '\0';
 
···
 
 		nf_nat_amanda = rcu_dereference(nf_nat_amanda_hook);
 		if (nf_nat_amanda && ct->status & IPS_NAT_MASK)
-			ret = nf_nat_amanda(pskb, ctinfo, off - dataoff,
+			ret = nf_nat_amanda(skb, ctinfo, off - dataoff,
 					    len, exp);
 		else if (nf_ct_expect_related(exp) != 0)
 			ret = NF_DROP;

net/netfilter/nf_conntrack_core.c

···
 
 /* Confirm a connection given skb; places it in hash table */
 int
-__nf_conntrack_confirm(struct sk_buff **pskb)
+__nf_conntrack_confirm(struct sk_buff *skb)
 {
 	unsigned int hash, repl_hash;
 	struct nf_conntrack_tuple_hash *h;
···
 	struct hlist_node *n;
 	enum ip_conntrack_info ctinfo;
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	/* ipt_REJECT uses nf_conntrack_attach to attach related
 	   ICMP/TCP RST packets in other direction.  Actual packet
···
 	write_unlock_bh(&nf_conntrack_lock);
 	help = nfct_help(ct);
 	if (help && help->helper)
-		nf_conntrack_event_cache(IPCT_HELPER, *pskb);
+		nf_conntrack_event_cache(IPCT_HELPER, skb);
 #ifdef CONFIG_NF_NAT_NEEDED
 	if (test_bit(IPS_SRC_NAT_DONE_BIT, &ct->status) ||
 	    test_bit(IPS_DST_NAT_DONE_BIT, &ct->status))
-		nf_conntrack_event_cache(IPCT_NATINFO, *pskb);
+		nf_conntrack_event_cache(IPCT_NATINFO, skb);
 #endif
 	nf_conntrack_event_cache(master_ct(ct) ?
-				 IPCT_RELATED : IPCT_NEW, *pskb);
+				 IPCT_RELATED : IPCT_NEW, skb);
 	return NF_ACCEPT;
 
 out:
···
 }
 
 unsigned int
-nf_conntrack_in(int pf, unsigned int hooknum, struct sk_buff **pskb)
+nf_conntrack_in(int pf, unsigned int hooknum, struct sk_buff *skb)
 {
 	struct nf_conn *ct;
 	enum ip_conntrack_info ctinfo;
···
 	int ret;
 
 	/* Previously seen (loopback or untracked)?  Ignore. */
-	if ((*pskb)->nfct) {
+	if (skb->nfct) {
 		NF_CT_STAT_INC_ATOMIC(ignore);
 		return NF_ACCEPT;
 	}
 
 	/* rcu_read_lock()ed by nf_hook_slow */
 	l3proto = __nf_ct_l3proto_find((u_int16_t)pf);
-	ret = l3proto->get_l4proto(*pskb, skb_network_offset(*pskb),
+	ret = l3proto->get_l4proto(skb, skb_network_offset(skb),
 				   &dataoff, &protonum);
 	if (ret <= 0) {
 		pr_debug("not prepared to track yet or error occured\n");
···
 	 * inverse of the return code tells to the netfilter
 	 * core what to do with the packet. */
 	if (l4proto->error != NULL &&
-	    (ret = l4proto->error(*pskb, dataoff, &ctinfo, pf, hooknum)) <= 0) {
+	    (ret = l4proto->error(skb, dataoff, &ctinfo, pf, hooknum)) <= 0) {
 		NF_CT_STAT_INC_ATOMIC(error);
 		NF_CT_STAT_INC_ATOMIC(invalid);
 		return -ret;
 	}
 
-	ct = resolve_normal_ct(*pskb, dataoff, pf, protonum, l3proto, l4proto,
+	ct = resolve_normal_ct(skb, dataoff, pf, protonum, l3proto, l4proto,
 			       &set_reply, &ctinfo);
 	if (!ct) {
 		/* Not valid part of a connection */
···
 		return NF_DROP;
 	}
 
-	NF_CT_ASSERT((*pskb)->nfct);
+	NF_CT_ASSERT(skb->nfct);
 
-	ret = l4proto->packet(ct, *pskb, dataoff, ctinfo, pf, hooknum);
+	ret = l4proto->packet(ct, skb, dataoff, ctinfo, pf, hooknum);
 	if (ret < 0) {
 		/* Invalid: inverse of the return code tells
 		 * the netfilter core what to do */
 		pr_debug("nf_conntrack_in: Can't track with proto module\n");
-		nf_conntrack_put((*pskb)->nfct);
-		(*pskb)->nfct = NULL;
+		nf_conntrack_put(skb->nfct);
+		skb->nfct = NULL;
 		NF_CT_STAT_INC_ATOMIC(invalid);
 		return -ret;
 	}
 
 	if (set_reply && !test_and_set_bit(IPS_SEEN_REPLY_BIT, &ct->status))
-		nf_conntrack_event_cache(IPCT_STATUS, *pskb);
+		nf_conntrack_event_cache(IPCT_STATUS, skb);
 
 	return ret;
 }

net/netfilter/nf_conntrack_ftp.c

···
 static int loose;
 module_param(loose, bool, 0600);
 
-unsigned int (*nf_nat_ftp_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
 				enum ip_conntrack_info ctinfo,
 				enum nf_ct_ftp_type type,
 				unsigned int matchoff,
···
 	}
 }
 
-static int help(struct sk_buff **pskb,
+static int help(struct sk_buff *skb,
 		unsigned int protoff,
 		struct nf_conn *ct,
 		enum ip_conntrack_info ctinfo)
···
 		return NF_ACCEPT;
 	}
 
-	th = skb_header_pointer(*pskb, protoff, sizeof(_tcph), &_tcph);
+	th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph);
 	if (th == NULL)
 		return NF_ACCEPT;
 
 	dataoff = protoff + th->doff * 4;
 	/* No data? */
-	if (dataoff >= (*pskb)->len) {
+	if (dataoff >= skb->len) {
 		pr_debug("ftp: dataoff(%u) >= skblen(%u)\n", dataoff,
-			 (*pskb)->len);
+			 skb->len);
 		return NF_ACCEPT;
 	}
-	datalen = (*pskb)->len - dataoff;
+	datalen = skb->len - dataoff;
 
 	spin_lock_bh(&nf_ftp_lock);
-	fb_ptr = skb_header_pointer(*pskb, dataoff, datalen, ftp_buffer);
+	fb_ptr = skb_header_pointer(skb, dataoff, datalen, ftp_buffer);
 	BUG_ON(fb_ptr == NULL);
 
 	ends_in_nl = (fb_ptr[datalen - 1] == '\n');
···
 	 * (possibly changed) expectation itself. */
 	nf_nat_ftp = rcu_dereference(nf_nat_ftp_hook);
 	if (nf_nat_ftp && ct->status & IPS_NAT_MASK)
-		ret = nf_nat_ftp(pskb, ctinfo, search[dir][i].ftptype,
+		ret = nf_nat_ftp(skb, ctinfo, search[dir][i].ftptype,
 				 matchoff, matchlen, exp);
 	else {
 		/* Can't expect this?  Best to drop packet now. */
···
 	/* Now if this ends in \n, update ftp info.  Seq may have been
 	 * adjusted by NAT code. */
 	if (ends_in_nl)
-		update_nl_seq(seq, ct_ftp_info, dir, *pskb);
+		update_nl_seq(seq, ct_ftp_info, dir, skb);
  out:
 	spin_unlock_bh(&nf_ftp_lock);
 	return ret;

net/netfilter/nf_conntrack_h323_main.c

···
 				     "(determined by routing information)");
 
 /* Hooks for NAT */
-int (*set_h245_addr_hook) (struct sk_buff **pskb,
+int (*set_h245_addr_hook) (struct sk_buff *skb,
 			   unsigned char **data, int dataoff,
 			   H245_TransportAddress *taddr,
 			   union nf_conntrack_address *addr, __be16 port)
 			   __read_mostly;
-int (*set_h225_addr_hook) (struct sk_buff **pskb,
+int (*set_h225_addr_hook) (struct sk_buff *skb,
 			   unsigned char **data, int dataoff,
 			   TransportAddress *taddr,
 			   union nf_conntrack_address *addr, __be16 port)
 			   __read_mostly;
-int (*set_sig_addr_hook) (struct sk_buff **pskb,
+int (*set_sig_addr_hook) (struct sk_buff *skb,
 			  struct nf_conn *ct,
 			  enum ip_conntrack_info ctinfo,
 			  unsigned char **data,
 			  TransportAddress *taddr, int count) __read_mostly;
-int (*set_ras_addr_hook) (struct sk_buff **pskb,
+int (*set_ras_addr_hook) (struct sk_buff *skb,
 			  struct nf_conn *ct,
 			  enum ip_conntrack_info ctinfo,
 			  unsigned char **data,
 			  TransportAddress *taddr, int count) __read_mostly;
-int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
+int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
 			  struct nf_conn *ct,
 			  enum ip_conntrack_info ctinfo,
 			  unsigned char **data, int dataoff,
···
 			  __be16 port, __be16 rtp_port,
 			  struct nf_conntrack_expect *rtp_exp,
 			  struct nf_conntrack_expect *rtcp_exp) __read_mostly;
-int (*nat_t120_hook) (struct sk_buff **pskb,
+int (*nat_t120_hook) (struct sk_buff *skb,
 		      struct nf_conn *ct,
 		      enum ip_conntrack_info ctinfo,
 		      unsigned char **data, int dataoff,
 		      H245_TransportAddress *taddr, __be16 port,
 		      struct nf_conntrack_expect *exp) __read_mostly;
-int (*nat_h245_hook) (struct sk_buff **pskb,
+int (*nat_h245_hook) (struct sk_buff *skb,
 		      struct nf_conn *ct,
 		      enum ip_conntrack_info ctinfo,
 		      unsigned char **data, int dataoff,
 		      TransportAddress *taddr, __be16 port,
 		      struct nf_conntrack_expect *exp) __read_mostly;
-int (*nat_callforwarding_hook) (struct sk_buff **pskb,
+int (*nat_callforwarding_hook) (struct sk_buff *skb,
 				struct nf_conn *ct,
 				enum ip_conntrack_info ctinfo,
 				unsigned char **data, int dataoff,
 				TransportAddress *taddr, __be16 port,
 				struct nf_conntrack_expect *exp) __read_mostly;
-int (*nat_q931_hook) (struct sk_buff **pskb,
+int (*nat_q931_hook) (struct sk_buff *skb,
 		      struct nf_conn *ct,
 		      enum ip_conntrack_info ctinfo,
 		      unsigned char **data, TransportAddress *taddr, int idx,
···
 static struct nf_conntrack_helper nf_conntrack_helper_ras[];
 
 /****************************************************************************/
-static int get_tpkt_data(struct sk_buff **pskb, unsigned int protoff,
+static int get_tpkt_data(struct sk_buff *skb, unsigned int protoff,
 			 struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			 unsigned char **data, int *datalen, int *dataoff)
 {
···
 	int tpktoff;
 
 	/* Get TCP header */
-	th = skb_header_pointer(*pskb, protoff, sizeof(_tcph), &_tcph);
+	th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph);
 	if (th == NULL)
 		return 0;
 
···
 	tcpdataoff = protoff + th->doff * 4;
 
 	/* Get TCP data length */
-	tcpdatalen = (*pskb)->len - tcpdataoff;
+	tcpdatalen = skb->len - tcpdataoff;
 	if (tcpdatalen <= 0)	/* No TCP data */
 		goto clear_out;
 
 	if (*data == NULL) {	/* first TPKT */
 		/* Get first TPKT pointer */
-		tpkt = skb_header_pointer(*pskb, tcpdataoff, tcpdatalen,
+		tpkt = skb_header_pointer(skb, tcpdataoff, tcpdatalen,
 					  h323_buffer);
 		BUG_ON(tpkt == NULL);
 
···
 }
 
 /****************************************************************************/
-static int expect_rtp_rtcp(struct sk_buff **pskb, struct nf_conn *ct,
+static int expect_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
 			   enum ip_conntrack_info ctinfo,
 			   unsigned char **data, int dataoff,
 			   H245_TransportAddress *taddr)
···
 		   (nat_rtp_rtcp = rcu_dereference(nat_rtp_rtcp_hook)) &&
 		   ct->status & IPS_NAT_MASK) {
 		/* NAT needed */
-		ret = nat_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+		ret = nat_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
 				   taddr, port, rtp_port, rtp_exp, rtcp_exp);
 	} else {		/* Conntrack only */
 		if (nf_ct_expect_related(rtp_exp) == 0) {
···
 }
 
 /****************************************************************************/
-static int expect_t120(struct sk_buff **pskb,
+static int expect_t120(struct sk_buff *skb,
 		       struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, int dataoff,
···
 	    (nat_t120 = rcu_dereference(nat_t120_hook)) &&
 	    ct->status & IPS_NAT_MASK) {
 		/* NAT needed */
-		ret = nat_t120(pskb, ct, ctinfo, data, dataoff, taddr,
+		ret = nat_t120(skb, ct, ctinfo, data, dataoff, taddr,
 			       port, exp);
 	} else {		/* Conntrack only */
 		if (nf_ct_expect_related(exp) == 0) {
···
 }
 
 /****************************************************************************/
-static int process_h245_channel(struct sk_buff **pskb,
+static int process_h245_channel(struct sk_buff *skb,
 				struct nf_conn *ct,
 				enum ip_conntrack_info ctinfo,
 				unsigned char **data, int dataoff,
···
 
 	if (channel->options & eH2250LogicalChannelParameters_mediaChannel) {
 		/* RTP */
-		ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
 				      &channel->mediaChannel);
 		if (ret < 0)
 			return -1;
···
 	if (channel->
 	    options & eH2250LogicalChannelParameters_mediaControlChannel) {
 		/* RTCP */
-		ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
 				      &channel->mediaControlChannel);
 		if (ret < 0)
 			return -1;
···
 }
 
 /****************************************************************************/
-static int process_olc(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, int dataoff,
 		       OpenLogicalChannel *olc)
···
 	if (olc->forwardLogicalChannelParameters.multiplexParameters.choice ==
 	    eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters)
 	{
-		ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+		ret = process_h245_channel(skb, ct, ctinfo, data, dataoff,
 					   &olc->
 					   forwardLogicalChannelParameters.
 					   multiplexParameters.
···
 		eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
 	{
 		ret =
-		    process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+		    process_h245_channel(skb, ct, ctinfo, data, dataoff,
 					 &olc->
 					 reverseLogicalChannelParameters.
 					 multiplexParameters.
···
 	    t120.choice == eDataProtocolCapability_separateLANStack &&
 	    olc->separateStack.networkAddress.choice ==
 	    eNetworkAccessParameters_networkAddress_localAreaAddress) {
-		ret = expect_t120(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_t120(skb, ct, ctinfo, data, dataoff,
 				  &olc->separateStack.networkAddress.
 				  localAreaAddress);
 		if (ret < 0)
···
 }
 
 /****************************************************************************/
-static int process_olca(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data, int dataoff,
 			OpenLogicalChannelAck *olca)
···
 		choice ==
 		eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
 	{
-		ret = process_h245_channel(pskb, ct, ctinfo, data, dataoff,
+		ret = process_h245_channel(skb, ct, ctinfo, data, dataoff,
 					   &olca->
 					   reverseLogicalChannelParameters.
 					   multiplexParameters.
···
 		if (ack->options &
 		    eH2250LogicalChannelAckParameters_mediaChannel) {
 			/* RTP */
-			ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+			ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
 					      &ack->mediaChannel);
 			if (ret < 0)
 				return -1;
···
 		if (ack->options &
 		    eH2250LogicalChannelAckParameters_mediaControlChannel) {
 			/* RTCP */
-			ret = expect_rtp_rtcp(pskb, ct, ctinfo, data, dataoff,
+			ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
 					      &ack->mediaControlChannel);
 			if (ret < 0)
 				return -1;
···
 	if ((olca->options & eOpenLogicalChannelAck_separateStack) &&
 		olca->separateStack.networkAddress.choice ==
 		eNetworkAccessParameters_networkAddress_localAreaAddress) {
-		ret = expect_t120(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_t120(skb, ct, ctinfo, data, dataoff,
 				  &olca->separateStack.networkAddress.
 				  localAreaAddress);
 		if (ret < 0)
···
 }
 
 /****************************************************************************/
-static int process_h245(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_h245(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data, int dataoff,
 			MultimediaSystemControlMessage *mscm)
···
 	case eMultimediaSystemControlMessage_request:
 		if (mscm->request.choice ==
 		    eRequestMessage_openLogicalChannel) {
-			return process_olc(pskb, ct, ctinfo, data, dataoff,
+			return process_olc(skb, ct, ctinfo, data, dataoff,
 					   &mscm->request.openLogicalChannel);
 		}
 		pr_debug("nf_ct_h323: H.245 Request %d\n",
···
 	case eMultimediaSystemControlMessage_response:
 		if (mscm->response.choice ==
 		    eResponseMessage_openLogicalChannelAck) {
-			return process_olca(pskb, ct, ctinfo, data, dataoff,
+			return process_olca(skb, ct, ctinfo, data, dataoff,
 					    &mscm->response.
 					    openLogicalChannelAck);
 		}
···
 }
 
 /****************************************************************************/
-static int h245_help(struct sk_buff **pskb, unsigned int protoff,
+static int h245_help(struct sk_buff *skb, unsigned int protoff,
 		     struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 {
 	static MultimediaSystemControlMessage mscm;
···
 	    ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
 		return NF_ACCEPT;
 	}
-	pr_debug("nf_ct_h245: skblen = %u\n", (*pskb)->len);
+	pr_debug("nf_ct_h245: skblen = %u\n", skb->len);
 
 	spin_lock_bh(&nf_h323_lock);
 
 	/* Process each TPKT */
-	while (get_tpkt_data(pskb, protoff, ct, ctinfo,
+	while (get_tpkt_data(skb, protoff, ct, ctinfo,
 			     &data, &datalen, &dataoff)) {
 		pr_debug("nf_ct_h245: TPKT len=%d ", datalen);
 		NF_CT_DUMP_TUPLE(&ct->tuplehash[CTINFO2DIR(ctinfo)].tuple);
···
 		}
 
 		/* Process H.245 signal */
-		if (process_h245(pskb, ct, ctinfo, &data, dataoff, &mscm) < 0)
+		if (process_h245(skb, ct, ctinfo, &data, dataoff, &mscm) < 0)
 			goto drop;
 	}
 
···
 }
 
 /****************************************************************************/
-static int expect_h245(struct sk_buff **pskb, struct nf_conn *ct,
+static int expect_h245(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, int dataoff,
 		       TransportAddress *taddr)
···
 	    (nat_h245 = rcu_dereference(nat_h245_hook)) &&
 	    ct->status & IPS_NAT_MASK) {
 		/* NAT needed */
-		ret = nat_h245(pskb, ct, ctinfo, data, dataoff, taddr,
+		ret = nat_h245(skb, ct, ctinfo, data, dataoff, taddr,
 			       port, exp);
 	} else {		/* Conntrack only */
 		if (nf_ct_expect_related(exp) == 0) {
···
 }
 
 /****************************************************************************/
-static int expect_callforwarding(struct sk_buff **pskb,
+static int expect_callforwarding(struct sk_buff *skb,
 				 struct nf_conn *ct,
 				 enum ip_conntrack_info ctinfo,
 				 unsigned char **data, int dataoff,
···
 	    (nat_callforwarding = rcu_dereference(nat_callforwarding_hook)) &&
 	    ct->status & IPS_NAT_MASK) {
 		/* Need NAT */
-		ret = nat_callforwarding(pskb, ct, ctinfo, data, dataoff,
+		ret = nat_callforwarding(skb, ct, ctinfo, data, dataoff,
 					 taddr, port, exp);
 	} else {		/* Conntrack only */
 		if (nf_ct_expect_related(exp) == 0) {
···
 }
 
 /****************************************************************************/
-static int process_setup(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned char **data, int dataoff,
 			 Setup_UUIE *setup)
···
 	pr_debug("nf_ct_q931: Setup\n");
 
 	if (setup->options & eSetup_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &setup->h245Address);
 		if (ret < 0)
 			return -1;
···
 			 NIP6(*(struct in6_addr *)&addr), ntohs(port),
 			 NIP6(*(struct in6_addr *)&ct->tuplehash[!dir].tuple.src.u3),
 			 ntohs(ct->tuplehash[!dir].tuple.src.u.tcp.port));
-		ret = set_h225_addr(pskb, data, dataoff,
+		ret = set_h225_addr(skb, data, dataoff,
 				    &setup->destCallSignalAddress,
 				    &ct->tuplehash[!dir].tuple.src.u3,
 				    ct->tuplehash[!dir].tuple.src.u.tcp.port);
···
 			 NIP6(*(struct in6_addr *)&addr), ntohs(port),
 			 NIP6(*(struct in6_addr *)&ct->tuplehash[!dir].tuple.dst.u3),
 			 ntohs(ct->tuplehash[!dir].tuple.dst.u.tcp.port));
-		ret = set_h225_addr(pskb, data, dataoff,
+		ret = set_h225_addr(skb, data, dataoff,
 				    &setup->sourceCallSignalAddress,
 				    &ct->tuplehash[!dir].tuple.dst.u3,
 				    ct->tuplehash[!dir].tuple.dst.u.tcp.port);
···
 
 	if (setup->options & eSetup_UUIE_fastStart) {
 		for (i = 0; i < setup->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &setup->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_callproceeding(struct sk_buff **pskb,
+static int process_callproceeding(struct sk_buff *skb,
 				  struct nf_conn *ct,
 				  enum ip_conntrack_info ctinfo,
 				  unsigned char **data, int dataoff,
···
 	pr_debug("nf_ct_q931: CallProceeding\n");
 
 	if (callproc->options & eCallProceeding_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &callproc->h245Address);
 		if (ret < 0)
 			return -1;
···
 
 	if (callproc->options & eCallProceeding_UUIE_fastStart) {
 		for (i = 0; i < callproc->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &callproc->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_connect(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_connect(struct sk_buff *skb, struct nf_conn *ct,
 			   enum ip_conntrack_info ctinfo,
 			   unsigned char **data, int dataoff,
 			   Connect_UUIE *connect)
···
 	pr_debug("nf_ct_q931: Connect\n");
 
 	if (connect->options & eConnect_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &connect->h245Address);
 		if (ret < 0)
 			return -1;
···
 
 	if (connect->options & eConnect_UUIE_fastStart) {
 		for (i = 0; i < connect->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &connect->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_alerting(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_alerting(struct sk_buff *skb, struct nf_conn *ct,
 			    enum ip_conntrack_info ctinfo,
 			    unsigned char **data, int dataoff,
 			    Alerting_UUIE *alert)
···
 	pr_debug("nf_ct_q931: Alerting\n");
 
 	if (alert->options & eAlerting_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &alert->h245Address);
 		if (ret < 0)
 			return -1;
···
 
 	if (alert->options & eAlerting_UUIE_fastStart) {
 		for (i = 0; i < alert->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &alert->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_facility(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_facility(struct sk_buff *skb, struct nf_conn *ct,
 			    enum ip_conntrack_info ctinfo,
 			    unsigned char **data, int dataoff,
 			    Facility_UUIE *facility)
···
 
 	if (facility->reason.choice == eFacilityReason_callForwarded) {
 		if (facility->options & eFacility_UUIE_alternativeAddress)
-			return expect_callforwarding(pskb, ct, ctinfo, data,
+			return expect_callforwarding(skb, ct, ctinfo, data,
 						     dataoff,
 						     &facility->
 						     alternativeAddress);
···
 	}
 
 	if (facility->options & eFacility_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &facility->h245Address);
 		if (ret < 0)
 			return -1;
···
 
 	if (facility->options & eFacility_UUIE_fastStart) {
 		for (i = 0; i < facility->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &facility->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_progress(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_progress(struct sk_buff *skb, struct nf_conn *ct,
 			    enum ip_conntrack_info ctinfo,
 			    unsigned char **data, int dataoff,
 			    Progress_UUIE *progress)
···
 	pr_debug("nf_ct_q931: Progress\n");
 
 	if (progress->options & eProgress_UUIE_h245Address) {
-		ret = expect_h245(pskb, ct, ctinfo, data, dataoff,
+		ret = expect_h245(skb, ct, ctinfo, data, dataoff,
 				  &progress->h245Address);
 		if (ret < 0)
 			return -1;
···
 
 	if (progress->options & eProgress_UUIE_fastStart) {
 		for (i = 0; i < progress->fastStart.count; i++) {
-			ret = process_olc(pskb, ct, ctinfo, data, dataoff,
+			ret = process_olc(skb, ct, ctinfo, data, dataoff,
 					  &progress->fastStart.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int process_q931(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_q931(struct sk_buff *skb, struct nf_conn *ct,
 			enum ip_conntrack_info ctinfo,
 			unsigned char **data, int dataoff, Q931 *q931)
 {
···
 
 	switch (pdu->h323_message_body.choice) {
 	case eH323_UU_PDU_h323_message_body_setup:
-		ret = process_setup(pskb, ct, ctinfo, data, dataoff,
+		ret = process_setup(skb, ct, ctinfo, data, dataoff,
 				    &pdu->h323_message_body.setup);
 		break;
 	case eH323_UU_PDU_h323_message_body_callProceeding:
-		ret = process_callproceeding(pskb, ct, ctinfo, data, dataoff,
+		ret = process_callproceeding(skb, ct, ctinfo, data, dataoff,
 					     &pdu->h323_message_body.
 					     callProceeding);
 		break;
 	case eH323_UU_PDU_h323_message_body_connect:
-		ret = process_connect(pskb, ct, ctinfo, data, dataoff,
+		ret = process_connect(skb, ct, ctinfo, data, dataoff,
 				      &pdu->h323_message_body.connect);
 		break;
 	case eH323_UU_PDU_h323_message_body_alerting:
-		ret = process_alerting(pskb, ct, ctinfo, data, dataoff,
+		ret = process_alerting(skb, ct, ctinfo, data, dataoff,
 				       &pdu->h323_message_body.alerting);
 		break;
 	case eH323_UU_PDU_h323_message_body_facility:
-		ret = process_facility(pskb, ct, ctinfo, data, dataoff,
+		ret = process_facility(skb, ct, ctinfo, data, dataoff,
 				       &pdu->h323_message_body.facility);
 		break;
 	case eH323_UU_PDU_h323_message_body_progress:
-		ret = process_progress(pskb, ct, ctinfo, data, dataoff,
+		ret = process_progress(skb, ct, ctinfo, data, dataoff,
 				       &pdu->h323_message_body.progress);
 		break;
 	default:
···
 
 	if (pdu->options & eH323_UU_PDU_h245Control) {
 		for (i = 0; i < pdu->h245Control.count; i++) {
-			ret = process_h245(pskb, ct, ctinfo, data, dataoff,
+			ret = process_h245(skb, ct, ctinfo, data, dataoff,
 					   &pdu->h245Control.item[i]);
 			if (ret < 0)
 				return -1;
···
 }
 
 /****************************************************************************/
-static int q931_help(struct sk_buff **pskb, unsigned int protoff,
+static int q931_help(struct sk_buff *skb, unsigned int protoff,
 		     struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 {
 	static Q931 q931;
···
 	    ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
 		return NF_ACCEPT;
 	}
-	pr_debug("nf_ct_q931: skblen = %u\n", (*pskb)->len);
+	pr_debug("nf_ct_q931: skblen = %u\n", skb->len);
 
 	spin_lock_bh(&nf_h323_lock);
 
 	/* Process each TPKT */
-	while (get_tpkt_data(pskb, protoff, ct, ctinfo,
+	while (get_tpkt_data(skb, protoff, ct, ctinfo,
 			     &data, &datalen, &dataoff)) {
 		pr_debug("nf_ct_q931: TPKT len=%d ", datalen);
 		NF_CT_DUMP_TUPLE(&ct->tuplehash[CTINFO2DIR(ctinfo)].tuple);
···
 		}
 
 		/* Process Q.931 signal */
-		if (process_q931(pskb, ct, ctinfo, &data, dataoff, &q931) < 0)
+		if (process_q931(skb, ct, ctinfo, &data, dataoff, &q931) < 0)
 			goto drop;
 	}
 
···
 };
 
 /****************************************************************************/
-static unsigned char *get_udp_data(struct sk_buff **pskb, unsigned int protoff,
+static unsigned char *get_udp_data(struct sk_buff *skb, unsigned int protoff,
 				   int *datalen)
 {
 	struct udphdr _uh, *uh;
 	int dataoff;
 
-	uh = skb_header_pointer(*pskb, protoff, sizeof(_uh), &_uh);
+	uh = skb_header_pointer(skb, protoff, sizeof(_uh), &_uh);
 	if (uh == NULL)
 		return NULL;
 	dataoff = protoff + sizeof(_uh);
-	if (dataoff >= (*pskb)->len)
+	if (dataoff >= skb->len)
 		return NULL;
-	*datalen = (*pskb)->len - dataoff;
-	return skb_header_pointer(*pskb, dataoff, *datalen, h323_buffer);
+	*datalen = skb->len - dataoff;
+	return skb_header_pointer(skb, dataoff, *datalen, h323_buffer);
 }
 
 /****************************************************************************/
···
 }
 
 /****************************************************************************/
-static int expect_q931(struct sk_buff **pskb, struct nf_conn *ct,
+static int expect_q931(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data,
 		       TransportAddress *taddr, int count)
···
 
 	nat_q931 = rcu_dereference(nat_q931_hook);
 	if (nat_q931 && ct->status & IPS_NAT_MASK) {	/* Need NAT */
-		ret = nat_q931(pskb, ct, ctinfo, data, taddr, i, port, exp);
+		ret = nat_q931(skb, ct, ctinfo, data, taddr, i, port, exp);
 	} else {		/* Conntrack only */
 		if (nf_ct_expect_related(exp) == 0) {
 			pr_debug("nf_ct_ras: expect Q.931 ");
···
 }
 
 /****************************************************************************/
-static int process_grq(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_grq(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, GatekeeperRequest *grq)
 {
···
 
 	set_ras_addr = rcu_dereference(set_ras_addr_hook);
 	if (set_ras_addr && ct->status & IPS_NAT_MASK)	/* NATed */
-		return set_ras_addr(pskb, ct, ctinfo, data,
+		return set_ras_addr(skb, ct, ctinfo, data,
 				    &grq->rasAddress, 1);
 	return 0;
 }
 
 /****************************************************************************/
-static int process_gcf(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_gcf(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, GatekeeperConfirm *gcf)
 {
···
 }
 
 /****************************************************************************/
-static int process_rrq(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_rrq(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, RegistrationRequest *rrq)
 {
···
 
 	pr_debug("nf_ct_ras: RRQ\n");
 
-	ret = expect_q931(pskb, ct, ctinfo, data,
+	ret = expect_q931(skb, ct, ctinfo, data,
 			  rrq->callSignalAddress.item,
 			  rrq->callSignalAddress.count);
 	if (ret < 0)
···
 
 	set_ras_addr = rcu_dereference(set_ras_addr_hook);
 	if (set_ras_addr && ct->status & IPS_NAT_MASK) {
-		ret = set_ras_addr(pskb, ct, ctinfo, data,
+		ret = set_ras_addr(skb, ct, ctinfo, data,
 				   rrq->rasAddress.item,
 				   rrq->rasAddress.count);
 		if (ret < 0)
···
 }
 
 /****************************************************************************/
-static int process_rcf(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_rcf(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, RegistrationConfirm *rcf)
 {
···
 
 	set_sig_addr = rcu_dereference(set_sig_addr_hook);
 	if (set_sig_addr && ct->status & IPS_NAT_MASK) {
-		ret = set_sig_addr(pskb, ct, ctinfo, data,
+		ret = set_sig_addr(skb, ct, ctinfo, data,
 					rcf->callSignalAddress.item,
 					rcf->callSignalAddress.count);
 		if (ret < 0)
···
 	if (info->timeout > 0) {
 		pr_debug("nf_ct_ras: set RAS connection timeout to "
 			 "%u seconds\n", info->timeout);
-		nf_ct_refresh(ct, *pskb, info->timeout * HZ);
+		nf_ct_refresh(ct, skb, info->timeout * HZ);
 
 		/* Set expect timeout */
 		read_lock_bh(&nf_conntrack_lock);
···
 }
 
 /****************************************************************************/
-static int process_urq(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_urq(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, UnregistrationRequest *urq)
 {
···
 
 	set_sig_addr = rcu_dereference(set_sig_addr_hook);
 	if (set_sig_addr && ct->status & IPS_NAT_MASK) {
-		ret = set_sig_addr(pskb, ct, ctinfo, data,
+		ret = set_sig_addr(skb, ct, ctinfo, data,
 				   urq->callSignalAddress.item,
 				   urq->callSignalAddress.count);
 		if (ret < 0)
···
 	info->sig_port[!dir] = 0;
 
 	/* Give it 30 seconds for UCF or URJ */
-	nf_ct_refresh(ct, *pskb, 30 * HZ);
+	nf_ct_refresh(ct, skb, 30 * HZ);
 
 	return 0;
 }
 
 /****************************************************************************/
-static int process_arq(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, AdmissionRequest *arq)
 {
···
 	    port == info->sig_port[dir] &&
 	    set_h225_addr && ct->status & IPS_NAT_MASK) {
 		/* Answering ARQ */
-		return set_h225_addr(pskb, data, 0,
+		return set_h225_addr(skb, data, 0,
 				     &arq->destCallSignalAddress,
 				     &ct->tuplehash[!dir].tuple.dst.u3,
 				     info->sig_port[!dir]);
···
 	    !memcmp(&addr, &ct->tuplehash[dir].tuple.src.u3, sizeof(addr)) &&
 	    set_h225_addr && ct->status & IPS_NAT_MASK) {
 		/* Calling ARQ */
-		return set_h225_addr(pskb, data, 0,
+		return set_h225_addr(skb, data, 0,
 				     &arq->srcCallSignalAddress,
 				     &ct->tuplehash[!dir].tuple.dst.u3,
 				     port);
···
 }
 
 /****************************************************************************/
-static int process_acf(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_acf(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, AdmissionConfirm *acf)
 {
···
 		/* Answering ACF */
 		set_sig_addr = rcu_dereference(set_sig_addr_hook);
 		if (set_sig_addr && ct->status & IPS_NAT_MASK)
-			return set_sig_addr(pskb, ct, ctinfo, data,
+			return set_sig_addr(skb, ct, ctinfo, data,
 					    &acf->destCallSignalAddress, 1);
 		return 0;
 	}
···
 }
 
 /****************************************************************************/
-static int process_lrq(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_lrq(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, LocationRequest *lrq)
 {
···
 
 	set_ras_addr = rcu_dereference(set_ras_addr_hook);
 	if (set_ras_addr && ct->status & IPS_NAT_MASK)
-		return set_ras_addr(pskb, ct, ctinfo, data,
+		return set_ras_addr(skb, ct, ctinfo, data,
 				    &lrq->replyAddress, 1);
 	return 0;
 }
 
 /****************************************************************************/
-static int process_lcf(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_lcf(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, LocationConfirm *lcf)
 {
···
 }
 
 /****************************************************************************/
-static int process_irr(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_irr(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, InfoRequestResponse *irr)
 {
···
 
 	set_ras_addr = rcu_dereference(set_ras_addr_hook);
 	if (set_ras_addr && ct->status & IPS_NAT_MASK) {
-		ret = set_ras_addr(pskb, ct, ctinfo, data,
+		ret = set_ras_addr(skb, ct, ctinfo, data,
 				   &irr->rasAddress, 1);
 		if (ret < 0)
 			return -1;
···
 
 	set_sig_addr = rcu_dereference(set_sig_addr_hook);
 	if (set_sig_addr && ct->status & IPS_NAT_MASK) {
-		ret = set_sig_addr(pskb, ct, ctinfo, data,
+		ret = set_sig_addr(skb, ct, ctinfo, data,
 					irr->callSignalAddress.item,
 					irr->callSignalAddress.count);
 		if (ret < 0)
···
 }
 
 /****************************************************************************/
-static int process_ras(struct sk_buff **pskb, struct nf_conn *ct,
+static int process_ras(struct sk_buff *skb, struct nf_conn *ct,
 		       enum ip_conntrack_info ctinfo,
 		       unsigned char **data, RasMessage *ras)
 {
 	switch (ras->choice) {
 	case eRasMessage_gatekeeperRequest:
-		return process_grq(pskb, ct, ctinfo, data,
+		return process_grq(skb, ct, ctinfo, data,
 				   &ras->gatekeeperRequest);
 	case eRasMessage_gatekeeperConfirm:
-		return process_gcf(pskb, ct, ctinfo, data,
+		return process_gcf(skb, ct, ctinfo, data,
 				   &ras->gatekeeperConfirm);
 	case eRasMessage_registrationRequest:
-		return process_rrq(pskb, ct, ctinfo, data,
+		return process_rrq(skb, ct, ctinfo, data,
 				   &ras->registrationRequest);
 	case eRasMessage_registrationConfirm:
-		return process_rcf(pskb, ct, ctinfo, data,
+		return process_rcf(skb, ct, ctinfo, data,
 				   &ras->registrationConfirm);
 	case eRasMessage_unregistrationRequest:
-		return process_urq(pskb, ct, ctinfo, data,
+		return process_urq(skb, ct, ctinfo, data,
 				   &ras->unregistrationRequest);
 	case eRasMessage_admissionRequest:
-		return process_arq(pskb, ct, ctinfo, data,
+		return process_arq(skb, ct, ctinfo, data,
 				   &ras->admissionRequest);
 	case eRasMessage_admissionConfirm:
-		return process_acf(pskb, ct, ctinfo, data,
+		return process_acf(skb, ct, ctinfo, data,
 				   &ras->admissionConfirm);
 	case eRasMessage_locationRequest:
-		return process_lrq(pskb, ct, ctinfo, data,
+		return process_lrq(skb, ct, ctinfo, data,
 				   &ras->locationRequest);
 	case eRasMessage_locationConfirm:
-		return process_lcf(pskb, ct, ctinfo, data,
+		return process_lcf(skb, ct, ctinfo, data,
 				   &ras->locationConfirm);
 	case eRasMessage_infoRequestResponse:
-		return process_irr(pskb, ct, ctinfo, data,
+		return process_irr(skb, ct, ctinfo, data,
 				   &ras->infoRequestResponse);
 	default:
 		pr_debug("nf_ct_ras: RAS message %d\n", ras->choice);
···
 }
 
 /****************************************************************************/
-static int ras_help(struct sk_buff **pskb, unsigned int protoff,
+static int ras_help(struct sk_buff *skb, unsigned int protoff,
 		    struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 {
 	static RasMessage ras;
···
 	int datalen = 0;
 	int ret;
 
-	pr_debug("nf_ct_ras: skblen = %u\n", (*pskb)->len);
+	pr_debug("nf_ct_ras: skblen = %u\n", skb->len);
 
 	spin_lock_bh(&nf_h323_lock);
 
 	/* Get UDP data */
-	data = get_udp_data(pskb, protoff, &datalen);
+	data = get_udp_data(skb, protoff, &datalen);
 	if (data == NULL)
 		goto accept;
 	pr_debug("nf_ct_ras: RAS message len=%d ", datalen);
···
 	}
 
 	/* Process RAS message */
-	if (process_ras(pskb, ct, ctinfo, &data, &ras) < 0)
+	if (process_ras(skb, ct, ctinfo, &data, &ras) < 0)
 		goto drop;
 
       accept:

net/netfilter/nf_conntrack_irc.c

···
 static char *irc_buffer;
 static DEFINE_SPINLOCK(irc_buffer_lock);
 
-unsigned int (*nf_nat_irc_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
 				enum ip_conntrack_info ctinfo,
 				unsigned int matchoff,
 				unsigned int matchlen,
···
 	return 0;
 }
 
-static int help(struct sk_buff **pskb, unsigned int protoff,
+static int help(struct sk_buff *skb, unsigned int protoff,
 		struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 {
 	unsigned int dataoff;
···
 		return NF_ACCEPT;
 
 	/* Not a full tcp header? */
-	th = skb_header_pointer(*pskb, protoff, sizeof(_tcph), &_tcph);
+	th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph);
 	if (th == NULL)
 		return NF_ACCEPT;
 
 	/* No data? */
 	dataoff = protoff + th->doff*4;
-	if (dataoff >= (*pskb)->len)
+	if (dataoff >= skb->len)
 		return NF_ACCEPT;
 
 	spin_lock_bh(&irc_buffer_lock);
-	ib_ptr = skb_header_pointer(*pskb, dataoff, (*pskb)->len - dataoff,
+	ib_ptr = skb_header_pointer(skb, dataoff, skb->len - dataoff,
 				    irc_buffer);
 	BUG_ON(ib_ptr == NULL);
 
 	data = ib_ptr;
-	data_limit = ib_ptr + (*pskb)->len - dataoff;
+	data_limit = ib_ptr + skb->len - dataoff;
 
 	/* strlen("\1DCC SENT t AAAAAAAA P\1\n")=24
 	 * 5+MINMATCHLEN+strlen("t AAAAAAAA P\1\n")=14 */
···
 		data += 5;
 		/* we have at least (19+MINMATCHLEN)-5 bytes valid data left */
 
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 		pr_debug("DCC found in master %u.%u.%u.%u:%u %u.%u.%u.%u:%u\n",
 			 NIPQUAD(iph->saddr), ntohs(th->source),
 			 NIPQUAD(iph->daddr), ntohs(th->dest));
···
 
 			nf_nat_irc = rcu_dereference(nf_nat_irc_hook);
 			if (nf_nat_irc && ct->status & IPS_NAT_MASK)
-				ret = nf_nat_irc(pskb, ctinfo,
+				ret = nf_nat_irc(skb, ctinfo,
 						 addr_beg_p - ib_ptr,
 						 addr_end_p - addr_beg_p,
 						 exp);

net/netfilter/nf_conntrack_netbios_ns.c

···
 module_param(timeout, uint, 0400);
 MODULE_PARM_DESC(timeout, "timeout for master connection/replies in seconds");
 
-static int help(struct sk_buff **pskb, unsigned int protoff,
+static int help(struct sk_buff *skb, unsigned int protoff,
 		struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 {
 	struct nf_conntrack_expect *exp;
-	struct iphdr *iph = ip_hdr(*pskb);
-	struct rtable *rt = (struct rtable *)(*pskb)->dst;
+	struct iphdr *iph = ip_hdr(skb);
+	struct rtable *rt = (struct rtable *)skb->dst;
 	struct in_device *in_dev;
 	__be32 mask = 0;
 
 	/* we're only interested in locally generated packets */
-	if ((*pskb)->sk == NULL)
+	if (skb->sk == NULL)
 		goto out;
 	if (rt == NULL || !(rt->rt_flags & RTCF_BROADCAST))
 		goto out;
···
 	nf_ct_expect_related(exp);
 	nf_ct_expect_put(exp);
 
-	nf_ct_refresh(ct, *pskb, timeout * HZ);
+	nf_ct_refresh(ct, skb, timeout * HZ);
 out:
 	return NF_ACCEPT;
 }

net/netfilter/nf_conntrack_pptp.c

···
 static DEFINE_SPINLOCK(nf_pptp_lock);
 
 int
-(*nf_nat_pptp_hook_outbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
 			     struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			     struct PptpControlHeader *ctlh,
 			     union pptp_ctrl_union *pptpReq) __read_mostly;
 EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_outbound);
 
 int
-(*nf_nat_pptp_hook_inbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
 			    struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			    struct PptpControlHeader *ctlh,
 			    union pptp_ctrl_union *pptpReq) __read_mostly;
···
 }
 
 static inline int
-pptp_inbound_pkt(struct sk_buff **pskb,
+pptp_inbound_pkt(struct sk_buff *skb,
 		 struct PptpControlHeader *ctlh,
 		 union pptp_ctrl_union *pptpReq,
 		 unsigned int reqlen,
···
 
 	nf_nat_pptp_inbound = rcu_dereference(nf_nat_pptp_hook_inbound);
 	if (nf_nat_pptp_inbound && ct->status & IPS_NAT_MASK)
-		return nf_nat_pptp_inbound(pskb, ct, ctinfo, ctlh, pptpReq);
+		return nf_nat_pptp_inbound(skb, ct, ctinfo, ctlh, pptpReq);
 	return NF_ACCEPT;
 
 invalid:
···
 }
 
 static inline int
-pptp_outbound_pkt(struct sk_buff **pskb,
+pptp_outbound_pkt(struct sk_buff *skb,
 		  struct PptpControlHeader *ctlh,
 		  union pptp_ctrl_union *pptpReq,
 		  unsigned int reqlen,
···
 
 	nf_nat_pptp_outbound = rcu_dereference(nf_nat_pptp_hook_outbound);
 	if (nf_nat_pptp_outbound && ct->status & IPS_NAT_MASK)
-		return nf_nat_pptp_outbound(pskb, ct, ctinfo, ctlh, pptpReq);
+		return nf_nat_pptp_outbound(skb, ct, ctinfo, ctlh, pptpReq);
 	return NF_ACCEPT;
 
 invalid:
···
 
 /* track caller id inside control connection, call expect_related */
 static int
-conntrack_pptp_help(struct sk_buff **pskb, unsigned int protoff,
+conntrack_pptp_help(struct sk_buff *skb, unsigned int protoff,
 		    struct nf_conn *ct, enum ip_conntrack_info ctinfo)
 
 {
···
 	struct pptp_pkt_hdr _pptph, *pptph;
 	struct PptpControlHeader _ctlh, *ctlh;
 	union pptp_ctrl_union _pptpReq, *pptpReq;
-	unsigned int tcplen = (*pskb)->len - protoff;
+	unsigned int tcplen = skb->len - protoff;
 	unsigned int datalen, reqlen, nexthdr_off;
 	int oldsstate, oldcstate;
 	int ret;
···
 		return NF_ACCEPT;
 
 	nexthdr_off = protoff;
-	tcph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_tcph), &_tcph);
+	tcph = skb_header_pointer(skb, nexthdr_off, sizeof(_tcph), &_tcph);
 	BUG_ON(!tcph);
 	nexthdr_off += tcph->doff * 4;
 	datalen = tcplen - tcph->doff * 4;
 
-	pptph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_pptph), &_pptph);
+	pptph = skb_header_pointer(skb, nexthdr_off, sizeof(_pptph), &_pptph);
 	if (!pptph) {
 		pr_debug("no full PPTP header, can't track\n");
 		return NF_ACCEPT;
···
 		return NF_ACCEPT;
 	}
 
-	ctlh = skb_header_pointer(*pskb, nexthdr_off, sizeof(_ctlh), &_ctlh);
+	ctlh = skb_header_pointer(skb, nexthdr_off, sizeof(_ctlh), &_ctlh);
 	if (!ctlh)
 		return NF_ACCEPT;
 	nexthdr_off += sizeof(_ctlh);
···
 	if (reqlen > sizeof(*pptpReq))
 		reqlen = sizeof(*pptpReq);
 
-	pptpReq = skb_header_pointer(*pskb, nexthdr_off, reqlen, &_pptpReq);
+	pptpReq = skb_header_pointer(skb, nexthdr_off, reqlen, &_pptpReq);
 	if (!pptpReq)
 		return NF_ACCEPT;
 
···
 	 * established from PNS->PAC.  However, RFC makes no guarantee */
 	if (dir == IP_CT_DIR_ORIGINAL)
 		/* client -> server (PNS -> PAC) */
-		ret = pptp_outbound_pkt(pskb, ctlh, pptpReq, reqlen, ct,
+		ret = pptp_outbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
 					ctinfo);
 	else
 		/* server -> client (PAC -> PNS) */
-		ret = pptp_inbound_pkt(pskb, ctlh, pptpReq, reqlen, ct,
+		ret = pptp_inbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
 				       ctinfo);
 	pr_debug("sstate: %d->%d, cstate: %d->%d\n",
 		 oldsstate, info->sstate, oldcstate, info->cstate);

net/netfilter/nf_conntrack_sane.c

···
 	/* other fields aren't interesting for conntrack */
 };
 
-static int help(struct sk_buff **pskb,
+static int help(struct sk_buff *skb,
 		unsigned int protoff,
 		struct nf_conn *ct,
 		enum ip_conntrack_info ctinfo)
···
 		return NF_ACCEPT;
 
 	/* Not a full tcp header? */
-	th = skb_header_pointer(*pskb, protoff, sizeof(_tcph), &_tcph);
+	th = skb_header_pointer(skb, protoff, sizeof(_tcph), &_tcph);
 	if (th == NULL)
 		return NF_ACCEPT;
 
 	/* No data? */
 	dataoff = protoff + th->doff * 4;
-	if (dataoff >= (*pskb)->len)
+	if (dataoff >= skb->len)
 		return NF_ACCEPT;
 
-	datalen = (*pskb)->len - dataoff;
+	datalen = skb->len - dataoff;
 
 	spin_lock_bh(&nf_sane_lock);
-	sb_ptr = skb_header_pointer(*pskb, dataoff, datalen, sane_buffer);
+	sb_ptr = skb_header_pointer(skb, dataoff, datalen, sane_buffer);
 	BUG_ON(sb_ptr == NULL);
 
 	if (dir == IP_CT_DIR_ORIGINAL) {

net/netfilter/nf_conntrack_sip.c

···
 module_param(sip_timeout, uint, 0600);
 MODULE_PARM_DESC(sip_timeout, "timeout for the master SIP session");
 
-unsigned int (*nf_nat_sip_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
 				enum ip_conntrack_info ctinfo,
 				struct nf_conn *ct,
 				const char **dptr) __read_mostly;
 EXPORT_SYMBOL_GPL(nf_nat_sip_hook);
 
-unsigned int (*nf_nat_sdp_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
 				enum ip_conntrack_info ctinfo,
 				struct nf_conntrack_expect *exp,
 				const char *dptr) __read_mostly;
···
 }
 EXPORT_SYMBOL_GPL(ct_sip_get_info);
 
-static int set_expected_rtp(struct sk_buff **pskb,
+static int set_expected_rtp(struct sk_buff *skb,
 			    struct nf_conn *ct,
 			    enum ip_conntrack_info ctinfo,
 			    union nf_conntrack_address *addr,
···
 
 	nf_nat_sdp = rcu_dereference(nf_nat_sdp_hook);
 	if (nf_nat_sdp && ct->status & IPS_NAT_MASK)
-		ret = nf_nat_sdp(pskb, ctinfo, exp, dptr);
+		ret = nf_nat_sdp(skb, ctinfo, exp, dptr);
 	else {
 		if (nf_ct_expect_related(exp) != 0)
 			ret = NF_DROP;
···
 	return ret;
 }
 
-static int sip_help(struct sk_buff **pskb,
+static int sip_help(struct sk_buff *skb,
 		    unsigned int protoff,
 		    struct nf_conn *ct,
 		    enum ip_conntrack_info ctinfo)
···
 
 	/* No Data ? */
 	dataoff = protoff + sizeof(struct udphdr);
-	if (dataoff >= (*pskb)->len)
+	if (dataoff >= skb->len)
 		return NF_ACCEPT;
 
-	nf_ct_refresh(ct, *pskb, sip_timeout * HZ);
+	nf_ct_refresh(ct, skb, sip_timeout * HZ);
 
-	if (!skb_is_nonlinear(*pskb))
-		dptr = (*pskb)->data + dataoff;
+	if (!skb_is_nonlinear(skb))
+		dptr = skb->data + dataoff;
 	else {
 		pr_debug("Copy of skbuff not supported yet.\n");
 		goto out;
···
 
 	nf_nat_sip = rcu_dereference(nf_nat_sip_hook);
 	if (nf_nat_sip && ct->status & IPS_NAT_MASK) {
-		if (!nf_nat_sip(pskb, ctinfo, ct, &dptr)) {
+		if (!nf_nat_sip(skb, ctinfo, ct, &dptr)) {
 			ret = NF_DROP;
 			goto out;
 		}
 	}
 
-	datalen = (*pskb)->len - dataoff;
+	datalen = skb->len - dataoff;
 	if (datalen < sizeof("SIP/2.0 200") - 1)
 		goto out;
 
···
 				ret = NF_DROP;
 				goto out;
 			}
-			ret = set_expected_rtp(pskb, ct, ctinfo, &addr,
+			ret = set_expected_rtp(skb, ct, ctinfo, &addr,
 					       htons(port), dptr);
 		}
 	}

net/netfilter/nf_conntrack_tftp.c

···
 module_param_array(ports, ushort, &ports_c, 0400);
 MODULE_PARM_DESC(ports, "Port numbers of TFTP servers");
 
-unsigned int (*nf_nat_tftp_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_tftp_hook)(struct sk_buff *skb,
 				 enum ip_conntrack_info ctinfo,
 				 struct nf_conntrack_expect *exp) __read_mostly;
 EXPORT_SYMBOL_GPL(nf_nat_tftp_hook);
 
-static int tftp_help(struct sk_buff **pskb,
+static int tftp_help(struct sk_buff *skb,
 		     unsigned int protoff,
 		     struct nf_conn *ct,
 		     enum ip_conntrack_info ctinfo)
···
 	int family = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
 	typeof(nf_nat_tftp_hook) nf_nat_tftp;
 
-	tfh = skb_header_pointer(*pskb, protoff + sizeof(struct udphdr),
+	tfh = skb_header_pointer(skb, protoff + sizeof(struct udphdr),
 				 sizeof(_tftph), &_tftph);
 	if (tfh == NULL)
 		return NF_ACCEPT;
···
 
 		nf_nat_tftp = rcu_dereference(nf_nat_tftp_hook);
 		if (nf_nat_tftp && ct->status & IPS_NAT_MASK)
-			ret = nf_nat_tftp(pskb, ctinfo, exp);
+			ret = nf_nat_tftp(skb, ctinfo, exp);
 		else if (nf_ct_expect_related(exp) != 0)
 			ret = NF_DROP;
 		nf_ct_expect_put(exp);

net/netfilter/nf_internals.h

···
 
 /* core.c */
 extern unsigned int nf_iterate(struct list_head *head,
-				struct sk_buff **skb,
+				struct sk_buff *skb,
 				int hook,
 				const struct net_device *indev,
 				const struct net_device *outdev,

net/netfilter/nf_queue.c

···
 
 	if (verdict == NF_ACCEPT) {
 		afinfo = nf_get_afinfo(info->pf);
-		if (!afinfo || afinfo->reroute(&skb, info) < 0)
+		if (!afinfo || afinfo->reroute(skb, info) < 0)
 			verdict = NF_DROP;
 	}
 
 	if (verdict == NF_ACCEPT) {
 	next_hook:
 		verdict = nf_iterate(&nf_hooks[info->pf][info->hook],
-				     &skb, info->hook,
+				     skb, info->hook,
 				     info->indev, info->outdev, &elem,
 				     info->okfn, INT_MIN);
 	}

net/netfilter/nfnetlink_queue.c

···
 nfqnl_mangle(void *data, int data_len, struct nfqnl_queue_entry *e)
 {
 	int diff;
+	int err;
 
 	diff = data_len - e->skb->len;
 	if (diff < 0) {
···
 		if (data_len > 0xFFFF)
 			return -EINVAL;
 		if (diff > skb_tailroom(e->skb)) {
-			struct sk_buff *newskb;
-
-			newskb = skb_copy_expand(e->skb,
-						 skb_headroom(e->skb),
-						 diff,
-						 GFP_ATOMIC);
-			if (newskb == NULL) {
+			err = pskb_expand_head(e->skb, 0,
+					       diff - skb_tailroom(e->skb),
+					       GFP_ATOMIC);
+			if (err) {
 				printk(KERN_WARNING "nf_queue: OOM "
 				      "in mangle, dropping packet\n");
-				return -ENOMEM;
+				return err;
 			}
-			if (e->skb->sk)
-				skb_set_owner_w(newskb, e->skb->sk);
-			kfree_skb(e->skb);
-			e->skb = newskb;
 		}
 		skb_put(e->skb, diff);
 	}
-	if (!skb_make_writable(&e->skb, data_len))
+	if (!skb_make_writable(e->skb, data_len))
 		return -ENOMEM;
 	skb_copy_to_linear_data(e->skb, data, data_len);
 	e->skb->ip_summed = CHECKSUM_NONE;

net/netfilter/xt_CLASSIFY.c

···
 MODULE_ALIAS("ip6t_CLASSIFY");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
 {
 	const struct xt_classify_target_info *clinfo = targinfo;
 
-	(*pskb)->priority = clinfo->priority;
+	skb->priority = clinfo->priority;
 	return XT_CONTINUE;
 }
 

net/netfilter/xt_CONNMARK.c

···
 #include <net/netfilter/nf_conntrack_ecache.h>
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
 	u_int32_t mark;
 	u_int32_t newmark;
 
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 	if (ct) {
 		switch(markinfo->mode) {
 		case XT_CONNMARK_SET:
 			newmark = (ct->mark & ~markinfo->mask) | markinfo->mark;
 			if (newmark != ct->mark) {
 				ct->mark = newmark;
-				nf_conntrack_event_cache(IPCT_MARK, *pskb);
+				nf_conntrack_event_cache(IPCT_MARK, skb);
 			}
 			break;
 		case XT_CONNMARK_SAVE:
 			newmark = (ct->mark & ~markinfo->mask) |
-				  ((*pskb)->mark & markinfo->mask);
+				  (skb->mark & markinfo->mask);
 			if (ct->mark != newmark) {
 				ct->mark = newmark;
-				nf_conntrack_event_cache(IPCT_MARK, *pskb);
+				nf_conntrack_event_cache(IPCT_MARK, skb);
 			}
 			break;
 		case XT_CONNMARK_RESTORE:
-			mark = (*pskb)->mark;
+			mark = skb->mark;
 			diff = (ct->mark ^ mark) & markinfo->mask;
-			(*pskb)->mark = mark ^ diff;
+			skb->mark = mark ^ diff;
 			break;
 		}
 	}

net/netfilter/xt_CONNSECMARK.c

···
 	}
 }
 
-static unsigned int target(struct sk_buff **pskb, const struct net_device *in,
+static unsigned int target(struct sk_buff *skb, const struct net_device *in,
 			   const struct net_device *out, unsigned int hooknum,
 			   const struct xt_target *target,
 			   const void *targinfo)
 {
-	struct sk_buff *skb = *pskb;
 	const struct xt_connsecmark_target_info *info = targinfo;
 
 	switch (info->mode) {

net/netfilter/xt_DSCP.c

···
 MODULE_ALIAS("ipt_DSCP");
 MODULE_ALIAS("ip6t_DSCP");
 
-static unsigned int target(struct sk_buff **pskb,
+static unsigned int target(struct sk_buff *skb,
 			   const struct net_device *in,
 			   const struct net_device *out,
 			   unsigned int hooknum,
···
 			   const void *targinfo)
 {
 	const struct xt_DSCP_info *dinfo = targinfo;
-	u_int8_t dscp = ipv4_get_dsfield(ip_hdr(*pskb)) >> XT_DSCP_SHIFT;
+	u_int8_t dscp = ipv4_get_dsfield(ip_hdr(skb)) >> XT_DSCP_SHIFT;
 
 	if (dscp != dinfo->dscp) {
-		if (!skb_make_writable(pskb, sizeof(struct iphdr)))
+		if (!skb_make_writable(skb, sizeof(struct iphdr)))
 			return NF_DROP;
 
-		ipv4_change_dsfield(ip_hdr(*pskb), (__u8)(~XT_DSCP_MASK),
+		ipv4_change_dsfield(ip_hdr(skb), (__u8)(~XT_DSCP_MASK),
 				    dinfo->dscp << XT_DSCP_SHIFT);
 
 	}
 	return XT_CONTINUE;
 }
 
-static unsigned int target6(struct sk_buff **pskb,
+static unsigned int target6(struct sk_buff *skb,
 			    const struct net_device *in,
 			    const struct net_device *out,
 			    unsigned int hooknum,
···
 			    const void *targinfo)
 {
 	const struct xt_DSCP_info *dinfo = targinfo;
-	u_int8_t dscp = ipv6_get_dsfield(ipv6_hdr(*pskb)) >> XT_DSCP_SHIFT;
+	u_int8_t dscp = ipv6_get_dsfield(ipv6_hdr(skb)) >> XT_DSCP_SHIFT;
 
 	if (dscp != dinfo->dscp) {
-		if (!skb_make_writable(pskb, sizeof(struct ipv6hdr)))
+		if (!skb_make_writable(skb, sizeof(struct ipv6hdr)))
 			return NF_DROP;
 
-		ipv6_change_dsfield(ipv6_hdr(*pskb), (__u8)(~XT_DSCP_MASK),
+		ipv6_change_dsfield(ipv6_hdr(skb), (__u8)(~XT_DSCP_MASK),
 				    dinfo->dscp << XT_DSCP_SHIFT);
 	}
 	return XT_CONTINUE;

net/netfilter/xt_MARK.c

···
 MODULE_ALIAS("ip6t_MARK");
 
 static unsigned int
-target_v0(struct sk_buff **pskb,
+target_v0(struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  unsigned int hooknum,
···
 {
 	const struct xt_mark_target_info *markinfo = targinfo;
 
-	(*pskb)->mark = markinfo->mark;
+	skb->mark = markinfo->mark;
 	return XT_CONTINUE;
 }
 
 static unsigned int
-target_v1(struct sk_buff **pskb,
+target_v1(struct sk_buff *skb,
 	  const struct net_device *in,
 	  const struct net_device *out,
 	  unsigned int hooknum,
···
 		break;
 
 	case XT_MARK_AND:
-		mark = (*pskb)->mark & markinfo->mark;
+		mark = skb->mark & markinfo->mark;
 		break;
 
 	case XT_MARK_OR:
-		mark = (*pskb)->mark | markinfo->mark;
+		mark = skb->mark | markinfo->mark;
 		break;
 	}
 
-	(*pskb)->mark = mark;
+	skb->mark = mark;
 	return XT_CONTINUE;
 }
 

net/netfilter/xt_NFLOG.c

···
 MODULE_ALIAS("ip6t_NFLOG");
 
 static unsigned int
-nflog_target(struct sk_buff **pskb,
+nflog_target(struct sk_buff *skb,
 	     const struct net_device *in, const struct net_device *out,
 	     unsigned int hooknum, const struct xt_target *target,
 	     const void *targinfo)
···
 	li.u.ulog.group	     = info->group;
 	li.u.ulog.qthreshold = info->threshold;
 
-	nf_log_packet(target->family, hooknum, *pskb, in, out, &li,
+	nf_log_packet(target->family, hooknum, skb, in, out, &li,
 		      "%s", info->prefix);
 	return XT_CONTINUE;
 }

net/netfilter/xt_NFQUEUE.c

···
 MODULE_ALIAS("arpt_NFQUEUE");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,

net/netfilter/xt_NOTRACK.c

···
 MODULE_ALIAS("ip6t_NOTRACK");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
···
        const void *targinfo)
 {
 	/* Previously seen (loopback)? Ignore. */
-	if ((*pskb)->nfct != NULL)
+	if (skb->nfct != NULL)
 		return XT_CONTINUE;
 
 	/* Attach fake conntrack entry.
 	   If there is a real ct entry correspondig to this packet,
 	   it'll hang aroun till timing out. We don't deal with it
 	   for performance reasons. JK */
-	(*pskb)->nfct = &nf_conntrack_untracked.ct_general;
-	(*pskb)->nfctinfo = IP_CT_NEW;
-	nf_conntrack_get((*pskb)->nfct);
+	skb->nfct = &nf_conntrack_untracked.ct_general;
+	skb->nfctinfo = IP_CT_NEW;
+	nf_conntrack_get(skb->nfct);
 
 	return XT_CONTINUE;
 }

net/netfilter/xt_SECMARK.c

···
 
 static u8 mode;
 
-static unsigned int target(struct sk_buff **pskb, const struct net_device *in,
+static unsigned int target(struct sk_buff *skb, const struct net_device *in,
 			   const struct net_device *out, unsigned int hooknum,
 			   const struct xt_target *target,
 			   const void *targinfo)
···
 		BUG();
 	}
 
-	(*pskb)->secmark = secmark;
+	skb->secmark = secmark;
 	return XT_CONTINUE;
 }
 

net/netfilter/xt_TCPMSS.c

···
 }
 
 static int
-tcpmss_mangle_packet(struct sk_buff **pskb,
+tcpmss_mangle_packet(struct sk_buff *skb,
 		     const struct xt_tcpmss_info *info,
 		     unsigned int tcphoff,
 		     unsigned int minlen)
···
 	u16 newmss;
 	u8 *opt;
 
-	if (!skb_make_writable(pskb, (*pskb)->len))
+	if (!skb_make_writable(skb, skb->len))
 		return -1;
 
-	tcplen = (*pskb)->len - tcphoff;
-	tcph = (struct tcphdr *)(skb_network_header(*pskb) + tcphoff);
+	tcplen = skb->len - tcphoff;
+	tcph = (struct tcphdr *)(skb_network_header(skb) + tcphoff);
 
 	/* Since it passed flags test in tcp match, we know it is is
 	   not a fragment, and has data >= tcp header length.  SYN
···
 	if (tcplen != tcph->doff*4) {
 		if (net_ratelimit())
 			printk(KERN_ERR "xt_TCPMSS: bad length (%u bytes)\n",
-			       (*pskb)->len);
+			       skb->len);
 		return -1;
 	}
 
 	if (info->mss == XT_TCPMSS_CLAMP_PMTU) {
-		if (dst_mtu((*pskb)->dst) <= minlen) {
+		if (dst_mtu(skb->dst) <= minlen) {
 			if (net_ratelimit())
 				printk(KERN_ERR "xt_TCPMSS: "
 				       "unknown or invalid path-MTU (%u)\n",
-				       dst_mtu((*pskb)->dst));
+				       dst_mtu(skb->dst));
 			return -1;
 		}
-		newmss = dst_mtu((*pskb)->dst) - minlen;
+		newmss = dst_mtu(skb->dst) - minlen;
 	} else
 		newmss = info->mss;
 
···
 			opt[i+2] = (newmss & 0xff00) >> 8;
 			opt[i+3] = newmss & 0x00ff;
 
-			nf_proto_csum_replace2(&tcph->check, *pskb,
+			nf_proto_csum_replace2(&tcph->check, skb,
 					       htons(oldmss), htons(newmss), 0);
 			return 0;
 		}
···
 	/*
 	 * MSS Option not found ?! add it..
 	 */
-	if (skb_tailroom((*pskb)) < TCPOLEN_MSS) {
-		struct sk_buff *newskb;
-
-		newskb = skb_copy_expand(*pskb, skb_headroom(*pskb),
-					 TCPOLEN_MSS, GFP_ATOMIC);
-		if (!newskb)
+	if (skb_tailroom(skb) < TCPOLEN_MSS) {
+		if (pskb_expand_head(skb, 0,
+				     TCPOLEN_MSS - skb_tailroom(skb),
+				     GFP_ATOMIC))
 			return -1;
-		kfree_skb(*pskb);
-		*pskb = newskb;
-		tcph = (struct tcphdr *)(skb_network_header(*pskb) + tcphoff);
+		tcph = (struct tcphdr *)(skb_network_header(skb) + tcphoff);
 	}
 
-	skb_put((*pskb), TCPOLEN_MSS);
+	skb_put(skb, TCPOLEN_MSS);
 
 	opt = (u_int8_t *)tcph + sizeof(struct tcphdr);
 	memmove(opt + TCPOLEN_MSS, opt, tcplen - sizeof(struct tcphdr));
 
-	nf_proto_csum_replace2(&tcph->check, *pskb,
+	nf_proto_csum_replace2(&tcph->check, skb,
 			       htons(tcplen), htons(tcplen + TCPOLEN_MSS), 1);
 	opt[0] = TCPOPT_MSS;
 	opt[1] = TCPOLEN_MSS;
 	opt[2] = (newmss & 0xff00) >> 8;
 	opt[3] = newmss & 0x00ff;
 
-	nf_proto_csum_replace4(&tcph->check, *pskb, 0, *((__be32 *)opt), 0);
+	nf_proto_csum_replace4(&tcph->check, skb, 0, *((__be32 *)opt), 0);
 
 	oldval = ((__be16 *)tcph)[6];
 	tcph->doff += TCPOLEN_MSS/4;
-	nf_proto_csum_replace2(&tcph->check, *pskb,
+	nf_proto_csum_replace2(&tcph->check, skb,
 				oldval, ((__be16 *)tcph)[6], 0);
 	return TCPOLEN_MSS;
 }
 
 static unsigned int
-xt_tcpmss_target4(struct sk_buff **pskb,
+xt_tcpmss_target4(struct sk_buff *skb,
 		  const struct net_device *in,
 		  const struct net_device *out,
 		  unsigned int hooknum,
 		  const struct xt_target *target,
 		  const void *targinfo)
 {
-	struct iphdr *iph = ip_hdr(*pskb);
+	struct iphdr *iph = ip_hdr(skb);
 	__be16 newlen;
 	int ret;
 
-	ret = tcpmss_mangle_packet(pskb, targinfo, iph->ihl * 4,
+	ret = tcpmss_mangle_packet(skb, targinfo, iph->ihl * 4,
 				   sizeof(*iph) + sizeof(struct tcphdr));
 	if (ret < 0)
 		return NF_DROP;
 	if (ret > 0) {
-		iph = ip_hdr(*pskb);
+		iph = ip_hdr(skb);
 		newlen = htons(ntohs(iph->tot_len) + ret);
 		nf_csum_replace2(&iph->check, iph->tot_len, newlen);
 		iph->tot_len = newlen;
···
 
 #if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
 static unsigned int
-xt_tcpmss_target6(struct sk_buff **pskb,
+xt_tcpmss_target6(struct sk_buff *skb,
 		  const struct net_device *in,
 		  const struct net_device *out,
 		  unsigned int hooknum,
 		  const struct xt_target *target,
 		  const void *targinfo)
 {
-	struct ipv6hdr *ipv6h = ipv6_hdr(*pskb);
+	struct ipv6hdr *ipv6h = ipv6_hdr(skb);
 	u8 nexthdr;
 	int tcphoff;
 	int ret;
 
 	nexthdr = ipv6h->nexthdr;
-	tcphoff = ipv6_skip_exthdr(*pskb, sizeof(*ipv6h), &nexthdr);
+	tcphoff = ipv6_skip_exthdr(skb, sizeof(*ipv6h), &nexthdr);
 	if (tcphoff < 0) {
 		WARN_ON(1);
 		return NF_DROP;
 	}
-	ret = tcpmss_mangle_packet(pskb, targinfo, tcphoff,
+	ret = tcpmss_mangle_packet(skb, targinfo, tcphoff,
 				   sizeof(*ipv6h) + sizeof(struct tcphdr));
 	if (ret < 0)
 		return NF_DROP;
 	if (ret > 0) {
-		ipv6h = ipv6_hdr(*pskb);
+		ipv6h = ipv6_hdr(skb);
 		ipv6h->payload_len = htons(ntohs(ipv6h->payload_len) + ret);
 	}
 	return XT_CONTINUE;

net/netfilter/xt_TRACE.c

···
 MODULE_ALIAS("ip6t_TRACE");
 
 static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
        const struct net_device *in,
        const struct net_device *out,
        unsigned int hooknum,
        const struct xt_target *target,
        const void *targinfo)
 {
-	(*pskb)->nf_trace = 1;
+	skb->nf_trace = 1;
 	return XT_CONTINUE;
 }
 

net/netlink/af_netlink.c

···
 		nl_table[unit].cb_mutex = cb_mutex;
 		nl_table[unit].module = module;
 		nl_table[unit].registered = 1;
+	} else {
+		kfree(listeners);
 	}
 	netlink_table_ungrab();
 

net/sched/act_ipt.c

···
 	/* yes, we have to worry about both in and out dev
 	 worry later - danger - this API seems to have changed
 	 from earlier kernels */
-
-	/* iptables targets take a double skb pointer in case the skb
-	 * needs to be replaced. We don't own the skb, so this must not
-	 * happen. The pskb_expand_head above should make sure of this */
-	ret = ipt->tcfi_t->u.kernel.target->target(&skb, skb->dev, NULL,
+	ret = ipt->tcfi_t->u.kernel.target->target(skb, skb->dev, NULL,
 						   ipt->tcfi_hook,
 						   ipt->tcfi_t->u.kernel.target,
 						   ipt->tcfi_t->data);

net/sched/sch_ingress.c

···
 #ifndef CONFIG_NET_CLS_ACT
 #ifdef CONFIG_NETFILTER
 static unsigned int
-ing_hook(unsigned int hook, struct sk_buff **pskb,
+ing_hook(unsigned int hook, struct sk_buff *skb,
 			     const struct net_device *indev,
 			     const struct net_device *outdev,
 			     int (*okfn)(struct sk_buff *))
 {
 
 	struct Qdisc *q;
-	struct sk_buff *skb = *pskb;
 	struct net_device *dev = skb->dev;
 	int fwres=NF_ACCEPT;
 
 	DPRINTK("ing_hook: skb %s dev=%s len=%u\n",
 		skb->sk ? "(owned)" : "(unowned)",
-		skb->dev ? (*pskb)->dev->name : "(no dev)",
+		skb->dev ? skb->dev->name : "(no dev)",
 		skb->len);
 
 	if (dev->qdisc_ingress) {

net/sctp/ipv6.c

···
 	.flags         = SCTP_PROTOSW_FLAG,
 };
 
-static int sctp6_rcv(struct sk_buff **pskb)
+static int sctp6_rcv(struct sk_buff *skb)
 {
-	return sctp_rcv(*pskb) ? -1 : 0;
+	return sctp_rcv(skb) ? -1 : 0;
 }
 
 static struct inet6_protocol sctpv6_protocol = {

security/selinux/hooks.c

···
 }
 
 static unsigned int selinux_ip_postroute_last(unsigned int hooknum,
-                                              struct sk_buff **pskb,
+                                              struct sk_buff *skb,
                                               const struct net_device *in,
                                               const struct net_device *out,
                                               int (*okfn)(struct sk_buff *),
···
 	char *addrp;
 	int len, err = 0;
 	struct sock *sk;
-	struct sk_buff *skb = *pskb;
 	struct avc_audit_data ad;
 	struct net_device *dev = (struct net_device *)out;
 	struct sk_security_struct *sksec;
···
 }
 
 static unsigned int selinux_ipv4_postroute_last(unsigned int hooknum,
-						struct sk_buff **pskb,
+						struct sk_buff *skb,
 						const struct net_device *in,
 						const struct net_device *out,
 						int (*okfn)(struct sk_buff *))
 {
-	return selinux_ip_postroute_last(hooknum, pskb, in, out, okfn, PF_INET);
+	return selinux_ip_postroute_last(hooknum, skb, in, out, okfn, PF_INET);
 }
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 
 static unsigned int selinux_ipv6_postroute_last(unsigned int hooknum,
-						struct sk_buff **pskb,
+						struct sk_buff *skb,
 						const struct net_device *in,
 						const struct net_device *out,
 						int (*okfn)(struct sk_buff *))
 {
-	return selinux_ip_postroute_last(hooknum, pskb, in, out, okfn, PF_INET6);
+	return selinux_ip_postroute_last(hooknum, skb, in, out, okfn, PF_INET6);
 }
 
 #endif	/* IPV6 */