Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

1) Don't use shared bluetooth antenna in iwlwifi driver for management
frames, from Emmanuel Grumbach.

2) Fix device ID check in ath9k driver, from Felix Fietkau.

3) Off by one in xen-netback BUG checks, from Dan Carpenter.

4) Fix IFLA_VF_PORT netlink attribute validation, from Daniel Borkmann.

5) Fix races in setting peeked bit flag in SKBs during datagram
receive. If it's shared we have to clone it otherwise the value can
easily be corrupted. Fix from Herbert Xu.

6) Revert fec clock handling change, causes regressions. From Fabio
Estevam.

7) Fix use after free in fq_codel and sfq packet schedulers, from WANG
Cong.

8) ipvlan bug fixes (memory leaks, missing rcu_dereference_bh, etc.)
from WANG Cong and Konstantin Khlebnikov.

9) Memory leak in act_bpf packet action, from Alexei Starovoitov.

10) ARM bpf JIT bug fixes from Nicolas Schichan.

11) Fix backwards compat of ANY_LAYOUT in virtio_net driver, from
Michael S Tsirkin.

12) Destruction of bond with different ARP header types not handled
correctly, fix from Nikolay Aleksandrov.

13) Revert GRO receive support in ipv6 SIT tunnel driver, causes
regressions because the GRO packets created cannot be processed
properly on the GSO side if we forward the frame. From Herbert Xu.

14) TCCR update race and other fixes to ravb driver from Sergei
Shtylyov.

15) Fix SKB leaks in caif_queue_rcv_skb(), from Eric Dumazet.

16) Fix panics on packet scheduler filter replace, from Daniel Borkmann.

17) Make sure AF_PACKET sees properly IP headers in defragmented frames
(via PACKET_FANOUT_FLAG_DEFRAG option), from Edward Hyunkoo Jee.

18) AF_NETLINK cannot hold mutex in RCU callback, fix from Florian
Westphal.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (84 commits)
ravb: fix ring memory allocation
net: phy: dp83867: Fix warning check for setting the internal delay
openvswitch: allocate nr_node_ids flow_stats instead of num_possible_nodes
netlink: don't hold mutex in rcu callback when releasing mmapd ring
ARM: net: fix vlan access instructions in ARM JIT.
ARM: net: handle negative offsets in BPF JIT.
ARM: net: fix condition for load_order > 0 when translating load instructions.
tcp: suppress a division by zero warning
drivers: net: cpsw: remove tx event processing in rx napi poll
inet: frags: fix defragmented packet's IP header for af_packet
net: mvneta: fix refilling for Rx DMA buffers
stmmac: fix setting of driver data in stmmac_dvr_probe
sched: cls_flow: fix panic on filter replace
sched: cls_flower: fix panic on filter replace
sched: cls_bpf: fix panic on filter replace
net/mdio: fix mdio_bus_match for c45 PHY
net: ratelimit warnings about dst entry refcount underflow or overflow
caif: fix leaks and race in caif_queue_rcv_skb()
qmi_wwan: add the second QMI/network interface for Sierra Wireless MC7305/MC7355
ravb: fix race updating TCCR
...

arch/arm/net/bpf_jit_32.c

···
 
 int bpf_jit_enable __read_mostly;
 
-static u64 jit_get_skb_b(struct sk_buff *skb, unsigned offset)
+static inline int call_neg_helper(struct sk_buff *skb, int offset, void *ret,
+		      unsigned int size)
+{
+	void *ptr = bpf_internal_load_pointer_neg_helper(skb, offset, size);
+
+	if (!ptr)
+		return -EFAULT;
+	memcpy(ret, ptr, size);
+	return 0;
+}
+
+static u64 jit_get_skb_b(struct sk_buff *skb, int offset)
 {
 	u8 ret;
 	int err;
 
-	err = skb_copy_bits(skb, offset, &ret, 1);
+	if (offset < 0)
+		err = call_neg_helper(skb, offset, &ret, 1);
+	else
+		err = skb_copy_bits(skb, offset, &ret, 1);
 
 	return (u64)err << 32 | ret;
 }
 
-static u64 jit_get_skb_h(struct sk_buff *skb, unsigned offset)
+static u64 jit_get_skb_h(struct sk_buff *skb, int offset)
 {
 	u16 ret;
 	int err;
 
-	err = skb_copy_bits(skb, offset, &ret, 2);
+	if (offset < 0)
+		err = call_neg_helper(skb, offset, &ret, 2);
+	else
+		err = skb_copy_bits(skb, offset, &ret, 2);
 
 	return (u64)err << 32 | ntohs(ret);
 }
 
-static u64 jit_get_skb_w(struct sk_buff *skb, unsigned offset)
+static u64 jit_get_skb_w(struct sk_buff *skb, int offset)
 {
 	u32 ret;
 	int err;
 
-	err = skb_copy_bits(skb, offset, &ret, 4);
+	if (offset < 0)
+		err = call_neg_helper(skb, offset, &ret, 4);
+	else
+		err = skb_copy_bits(skb, offset, &ret, 4);
 
 	return (u64)err << 32 | ntohl(ret);
 }
···
 		case BPF_LD | BPF_B | BPF_ABS:
 			load_order = 0;
 load:
-			/* the interpreter will deal with the negative K */
-			if ((int)k < 0)
-				return -ENOTSUPP;
 			emit_mov_i(r_off, k, ctx);
 load_common:
 			ctx->seen |= SEEN_DATA | SEEN_CALL;
···
 				emit(ARM_SUB_I(r_scratch, r_skb_hl,
 					       1 << load_order), ctx);
 				emit(ARM_CMP_R(r_scratch, r_off), ctx);
-				condt = ARM_COND_HS;
+				condt = ARM_COND_GE;
 			} else {
 				emit(ARM_CMP_R(r_skb_hl, r_off), ctx);
 				condt = ARM_COND_HI;
 			}
+
+			/*
+			 * test for negative offset, only if we are
+			 * currently scheduled to take the fast
+			 * path. this will update the flags so that
+			 * the slowpath instruction are ignored if the
+			 * offset is negative.
+			 *
+			 * for loard_order == 0 the HI condition will
+			 * make loads at offset 0 take the slow path too.
+			 */
+			_emit(condt, ARM_CMP_I(r_off, 0), ctx);
 
 			_emit(condt, ARM_ADD_R(r_scratch, r_off, r_skb_data),
 			      ctx);
···
 			off = offsetof(struct sk_buff, vlan_tci);
 			emit(ARM_LDRH_I(r_A, r_skb, off), ctx);
 			if (code == (BPF_ANC | SKF_AD_VLAN_TAG))
-				OP_IMM3(ARM_AND, r_A, r_A, VLAN_VID_MASK, ctx);
-			else
-				OP_IMM3(ARM_AND, r_A, r_A, VLAN_TAG_PRESENT, ctx);
+				OP_IMM3(ARM_AND, r_A, r_A, ~VLAN_TAG_PRESENT, ctx);
+			else {
+				OP_IMM3(ARM_LSR, r_A, r_A, 12, ctx);
+				OP_IMM3(ARM_AND, r_A, r_A, 0x1, ctx);
+			}
 			break;
 		case BPF_ANC | SKF_AD_QUEUE:
 			ctx->seen |= SEEN_SKB;

drivers/bluetooth/btbcm.c

···
 
 	/* Read Verbose Config Version Info */
 	skb = btbcm_read_verbose_config(hdev);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
-		get_unaligned_le16(skb->data + 5));
-	kfree_skb(skb);
+	if (!IS_ERR(skb)) {
+		BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name, skb->data[1],
+			get_unaligned_le16(skb->data + 5));
+		kfree_skb(skb);
+	}
 
 	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 

drivers/isdn/gigaset/ser-gigaset.c

···
 	cs->hw.ser->tty = tty;
 	atomic_set(&cs->hw.ser->refcnt, 1);
 	init_completion(&cs->hw.ser->dead_cmp);
-
 	tty->disc_data = cs;
+
+	/* Set the amount of data we're willing to receive per call
+	 * from the hardware driver to half of the input buffer size
+	 * to leave some reserve.
+	 * Note: We don't do flow control towards the hardware driver.
+	 * If more data is received than will fit into the input buffer,
+	 * it will be dropped and an error will be logged. This should
+	 * never happen as the device is slow and the buffer size ample.
+	 */
+	tty->receive_room = RBUFSIZE/2;
 
 	/* OK.. Initialization of the datastructures and the HW is done.. Now
 	 * startup system and notify the LL that we are ready to run
···
 {
 	gigaset_tty_close(tty);
 	return 0;
-}
-
-/*
- * Read on the tty.
- * Unused, received data goes only to the Gigaset driver.
- */
-static ssize_t
-gigaset_tty_read(struct tty_struct *tty, struct file *file,
-		 unsigned char __user *buf, size_t count)
-{
-	return -EAGAIN;
-}
-
-/*
- * Write on the tty.
- * Unused, transmit data comes only from the Gigaset driver.
- */
-static ssize_t
-gigaset_tty_write(struct tty_struct *tty, struct file *file,
-		  const unsigned char *buf, size_t count)
-{
-	return -EAGAIN;
 }
 
 /*
···
 	.open		= gigaset_tty_open,
 	.close		= gigaset_tty_close,
 	.hangup		= gigaset_tty_hangup,
-	.read		= gigaset_tty_read,
-	.write		= gigaset_tty_write,
 	.ioctl		= gigaset_tty_ioctl,
 	.receive_buf	= gigaset_tty_receive,
 	.write_wakeup	= gigaset_tty_wakeup,

drivers/net/bonding/bond_main.c

···
 	call_netdevice_notifiers(NETDEV_CHANGEADDR, bond_dev);
 }
 
+static struct slave *bond_get_old_active(struct bonding *bond,
+					 struct slave *new_active)
+{
+	struct slave *slave;
+	struct list_head *iter;
+
+	bond_for_each_slave(bond, slave, iter) {
+		if (slave == new_active)
+			continue;
+
+		if (ether_addr_equal(bond->dev->dev_addr, slave->dev->dev_addr))
+			return slave;
+	}
+
+	return NULL;
+}
+
 /* bond_do_fail_over_mac
  *
  * Perform special MAC address swapping for fail_over_mac settings
···
 		 */
 		if (!new_active)
 			return;
+
+		if (!old_active)
+			old_active = bond_get_old_active(bond, new_active);
 
 		if (old_active) {
 			ether_addr_copy(tmp_mac, new_active->dev->dev_addr);
···
 
 err_undo_flags:
 	/* Enslave of first slave has failed and we need to fix master's mac */
-	if (!bond_has_slaves(bond) &&
-	    ether_addr_equal_64bits(bond_dev->dev_addr, slave_dev->dev_addr))
-		eth_hw_addr_random(bond_dev);
+	if (!bond_has_slaves(bond)) {
+		if (ether_addr_equal_64bits(bond_dev->dev_addr,
+					    slave_dev->dev_addr))
+			eth_hw_addr_random(bond_dev);
+		if (bond_dev->type != ARPHRD_ETHER) {
+			ether_setup(bond_dev);
+			bond_dev->flags |= IFF_MASTER;
+			bond_dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+		}
+	}
 
 	return res;
 }
···
 		bond_dev->priv_flags |= IFF_DISABLE_NETPOLL;
 		netdev_info(bond_dev, "Destroying bond %s\n",
 			    bond_dev->name);
+		bond_remove_proc_entry(bond);
 		unregister_netdevice(bond_dev);
 	}
 	return ret;

drivers/net/can/at91_can.c

···
 
 	cf->can_id |= CAN_ERR_CRTL;
 	cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
-	netif_receive_skb(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 }
 
 /**
···
 	}
 
 	at91_read_mb(dev, mb, cf);
-	netif_receive_skb(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 
 	can_led_event(dev, CAN_LED_EVENT_RX);
 }
···
 		return 0;
 
 	at91_poll_err_frame(dev, cf, reg_sr);
-	netif_receive_skb(skb);
 
 	dev->stats.rx_packets++;
 	dev->stats.rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 
 	return 1;
 }
···
 		return;
 
 	at91_irq_err_state(dev, cf, new_state);
-	netif_rx(skb);
 
 	dev->stats.rx_packets++;
 	dev->stats.rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	priv->can.state = new_state;
 }

drivers/net/can/bfin_can.c

···
 		cf->data[6 - i] = (6 - i) < cf->can_dlc ? (val >> 8) : 0;
 	}
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 }
 
 static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
···
 
 	priv->can.state = state;
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }

drivers/net/can/cc770/cc770.c

···
 		for (i = 0; i < cf->can_dlc; i++)
 			cf->data[i] = cc770_read_reg(priv, msgobj[mo].data[i]);
 	}
-	netif_rx(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 }
 
 static int cc770_err(struct net_device *dev, u8 status)
···
 		}
 	}
 
-	netif_rx(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }

drivers/net/can/flexcan.c

···
 		return 0;
 
 	do_bus_err(dev, cf, reg_esr);
-	netif_receive_skb(skb);
 
 	dev->stats.rx_packets++;
 	dev->stats.rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 
 	return 1;
 }
···
 	if (unlikely(new_state == CAN_STATE_BUS_OFF))
 		can_bus_off(dev);
 
-	netif_receive_skb(skb);
-
 	dev->stats.rx_packets++;
 	dev->stats.rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 
 	return 1;
 }
···
 	}
 
 	flexcan_read_fifo(dev, cf);
-	netif_receive_skb(skb);
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_receive_skb(skb);
 
 	can_led_event(dev, CAN_LED_EVENT_RX);
 

drivers/net/can/grcan.c

···
 				cf->data[i] = (u8)(slot[j] >> shift);
 			}
 		}
-		netif_receive_skb(skb);
 
 		/* Update statistics and read pointer */
 		stats->rx_packets++;
 		stats->rx_bytes += cf->can_dlc;
+		netif_receive_skb(skb);
+
 		rd = grcan_ring_add(rd, GRCAN_MSG_SIZE, dma->rx.size);
 	}
 

drivers/net/can/sja1000/sja1000.c

···
 	/* release receive buffer */
 	sja1000_write_cmdreg(priv, CMD_RRB);
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	can_led_event(dev, CAN_LED_EVENT_RX);
 }
···
 			can_bus_off(dev);
 	}
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }

drivers/net/can/slcan.c

···
 
 	memcpy(skb_put(skb, sizeof(struct can_frame)),
 	       &cf, sizeof(struct can_frame));
-	netif_rx_ni(skb);
 
 	sl->dev->stats.rx_packets++;
 	sl->dev->stats.rx_bytes += cf.can_dlc;
+	netif_rx_ni(skb);
 }
 
 /* parse tty input stream */

drivers/net/can/spi/mcp251x.c

···
 	if (ret)
 		goto out_clk;
 
-	priv->power = devm_regulator_get(&spi->dev, "vdd");
-	priv->transceiver = devm_regulator_get(&spi->dev, "xceiver");
+	priv->power = devm_regulator_get_optional(&spi->dev, "vdd");
+	priv->transceiver = devm_regulator_get_optional(&spi->dev, "xceiver");
 	if ((PTR_ERR(priv->power) == -EPROBE_DEFER) ||
 	    (PTR_ERR(priv->transceiver) == -EPROBE_DEFER)) {
 		ret = -EPROBE_DEFER;
···
 	struct spi_device *spi = to_spi_device(dev);
 	struct mcp251x_priv *priv = spi_get_drvdata(spi);
 
-	if (priv->after_suspend & AFTER_SUSPEND_POWER) {
+	if (priv->after_suspend & AFTER_SUSPEND_POWER)
 		mcp251x_power_enable(priv->power, 1);
+
+	if (priv->after_suspend & AFTER_SUSPEND_UP) {
+		mcp251x_power_enable(priv->transceiver, 1);
 		queue_work(priv->wq, &priv->restart_work);
 	} else {
-		if (priv->after_suspend & AFTER_SUSPEND_UP) {
-			mcp251x_power_enable(priv->transceiver, 1);
-			queue_work(priv->wq, &priv->restart_work);
-		} else {
-			priv->after_suspend = 0;
-		}
+		priv->after_suspend = 0;
 	}
+
 	priv->force_quit = 0;
 	enable_irq(spi->irq);
 	return 0;

drivers/net/can/ti_hecc.c

···
 		}
 	}
 
-	netif_rx(skb);
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }

drivers/net/can/usb/ems_usb.c

···
 			cf->data[i] = msg->msg.can_msg.msg[i];
 	}
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 }
 
 static void ems_usb_rx_err(struct ems_usb *dev, struct ems_cpc_msg *msg)
···
 		stats->rx_errors++;
 	}
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 }
 
 /*

drivers/net/can/usb/esd_usb2.c

···
 			cf->data[7] = rxerr;
 		}
 
-		netif_rx(skb);
-
 		priv->bec.txerr = txerr;
 		priv->bec.rxerr = rxerr;
 
 		stats->rx_packets++;
 		stats->rx_bytes += cf->can_dlc;
+		netif_rx(skb);
 	}
 }
 
···
 				cf->data[i] = msg->msg.rx.data[i];
 		}
 
-		netif_rx(skb);
-
 		stats->rx_packets++;
 		stats->rx_bytes += cf->can_dlc;
+		netif_rx(skb);
 	}
 
 	return;

drivers/net/can/usb/peak_usb/pcan_usb.c

···
 		hwts->hwtstamp = timeval_to_ktime(tv);
 	}
 
-	netif_rx(skb);
 	mc->netdev->stats.rx_packets++;
 	mc->netdev->stats.rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }
···
 	hwts = skb_hwtstamps(skb);
 	hwts->hwtstamp = timeval_to_ktime(tv);
 
-	/* push the skb */
-	netif_rx(skb);
-
 	/* update statistics */
 	mc->netdev->stats.rx_packets++;
 	mc->netdev->stats.rx_bytes += cf->can_dlc;
+	/* push the skb */
+	netif_rx(skb);
 
 	return 0;
 

drivers/net/can/usb/peak_usb/pcan_usb_pro.c

···
 	hwts = skb_hwtstamps(skb);
 	hwts->hwtstamp = timeval_to_ktime(tv);
 
-	netif_rx(skb);
 	netdev->stats.rx_packets++;
 	netdev->stats.rx_bytes += can_frame->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }
···
 	peak_usb_get_ts_tv(&usb_if->time_ref, le32_to_cpu(er->ts32), &tv);
 	hwts = skb_hwtstamps(skb);
 	hwts->hwtstamp = timeval_to_ktime(tv);
-	netif_rx(skb);
 	netdev->stats.rx_packets++;
 	netdev->stats.rx_bytes += can_frame->can_dlc;
+	netif_rx(skb);
 
 	return 0;
 }

drivers/net/can/usb/usb_8dev.c

···
 	priv->bec.txerr = txerr;
 	priv->bec.rxerr = rxerr;
 
-	netif_rx(skb);
-
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
+	netif_rx(skb);
 }
 
 /* Read data and status frames */
···
 		else
 			memcpy(cf->data, msg->data, cf->can_dlc);
 
-		netif_rx(skb);
-
 		stats->rx_packets++;
 		stats->rx_bytes += cf->can_dlc;
+		netif_rx(skb);
 
 		can_led_event(priv->netdev, CAN_LED_EVENT_RX);
 	} else {

drivers/net/dsa/bcm_sf2.c

···
 	}
 
 	/* Include the pseudo-PHY address and the broadcast PHY address to
-	 * divert reads towards our workaround
+	 * divert reads towards our workaround. This is only required for
+	 * 7445D0, since 7445E0 disconnects the internal switch pseudo-PHY such
+	 * that we can use the regular SWITCH_MDIO master controller instead.
+	 *
+	 * By default, DSA initializes ds->phys_mii_mask to ds->phys_port_mask
+	 * to have a 1:1 mapping between Port address and PHY address in order
+	 * to utilize the slave_mii_bus instance to read from Port PHYs. This is
+	 * not what we want here, so we initialize phys_mii_mask 0 to always
+	 * utilize the "master" MDIO bus backed by the "mdio-unimac" driver.
 	 */
-	ds->phys_mii_mask |= ((1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0));
+	if (of_machine_is_compatible("brcm,bcm7445d0"))
+		ds->phys_mii_mask |= ((1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0));
+	else
+		ds->phys_mii_mask = 0;
 
 	rev = reg_readl(priv, REG_SWITCH_REVISION);
 	priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &

drivers/net/dsa/mv88e6xxx.c

···
 
 	newfid = __ffs(ps->fid_mask);
 	ps->fid[port] = newfid;
-	ps->fid_mask &= (1 << newfid);
+	ps->fid_mask &= ~(1 << newfid);
 	ps->bridge_mask[fid] &= ~(1 << port);
 	ps->bridge_mask[newfid] = 1 << port;
 

drivers/net/ethernet/freescale/fec_main.c

···
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
-#include <linux/pm_runtime.h>
 #include <linux/ptrace.h>
 #include <linux/errno.h>
 #include <linux/ioport.h>
···
 #define FEC_ENET_RAEM_V	0x8
 #define FEC_ENET_RAFL_V	0x8
 #define FEC_ENET_OPD_V	0xFFF0
-#define FEC_MDIO_PM_TIMEOUT  100 /* ms */
 
 static struct platform_device_id fec_devtype[] = {
 	{
···
 static int fec_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
 {
 	struct fec_enet_private *fep = bus->priv;
-	struct device *dev = &fep->pdev->dev;
 	unsigned long time_left;
-	int ret = 0;
-
-	ret = pm_runtime_get_sync(dev);
-	if (IS_ERR_VALUE(ret))
-		return ret;
 
 	fep->mii_timeout = 0;
 	init_completion(&fep->mdio_done);
···
 	if (time_left == 0) {
 		fep->mii_timeout = 1;
 		netdev_err(fep->netdev, "MDIO read timeout\n");
-		ret = -ETIMEDOUT;
-		goto out;
+		return -ETIMEDOUT;
 	}
 
-	ret = FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
-
-out:
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-
-	return ret;
+	/* return value */
+	return FEC_MMFR_DATA(readl(fep->hwp + FEC_MII_DATA));
 }
 
 static int fec_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
 			   u16 value)
 {
 	struct fec_enet_private *fep = bus->priv;
-	struct device *dev = &fep->pdev->dev;
 	unsigned long time_left;
-	int ret = 0;
-
-	ret = pm_runtime_get_sync(dev);
-	if (IS_ERR_VALUE(ret))
-		return ret;
 
 	fep->mii_timeout = 0;
 	init_completion(&fep->mdio_done);
···
 	if (time_left == 0) {
 		fep->mii_timeout = 1;
 		netdev_err(fep->netdev, "MDIO write timeout\n");
-		ret  = -ETIMEDOUT;
+		return -ETIMEDOUT;
 	}
 
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-
-	return ret;
+	return 0;
 }
 
 static int fec_enet_clk_enable(struct net_device *ndev, bool enable)
···
 		ret = clk_prepare_enable(fep->clk_ahb);
 		if (ret)
 			return ret;
+		ret = clk_prepare_enable(fep->clk_ipg);
+		if (ret)
+			goto failed_clk_ipg;
 		if (fep->clk_enet_out) {
 			ret = clk_prepare_enable(fep->clk_enet_out);
 			if (ret)
···
 		}
 	} else {
 		clk_disable_unprepare(fep->clk_ahb);
+		clk_disable_unprepare(fep->clk_ipg);
 		if (fep->clk_enet_out)
 			clk_disable_unprepare(fep->clk_enet_out);
 		if (fep->clk_ptp) {
···
 	if (fep->clk_enet_out)
 		clk_disable_unprepare(fep->clk_enet_out);
 failed_clk_enet_out:
+		clk_disable_unprepare(fep->clk_ipg);
+failed_clk_ipg:
 		clk_disable_unprepare(fep->clk_ahb);
 
 	return ret;
···
 	struct fec_enet_private *fep = netdev_priv(ndev);
 	int ret;
 
-	ret = pm_runtime_get_sync(&fep->pdev->dev);
-	if (IS_ERR_VALUE(ret))
-		return ret;
-
 	pinctrl_pm_select_default_state(&fep->pdev->dev);
 	ret = fec_enet_clk_enable(ndev, true);
 	if (ret)
-		goto clk_enable;
+		return ret;
 
 	/* I should reset the ring buffers here, but I don't yet know
 	 * a simple way to do that.
···
 	fec_enet_free_buffers(ndev);
 err_enet_alloc:
 	fec_enet_clk_enable(ndev, false);
-clk_enable:
-	pm_runtime_mark_last_busy(&fep->pdev->dev);
-	pm_runtime_put_autosuspend(&fep->pdev->dev);
 	pinctrl_pm_select_sleep_state(&fep->pdev->dev);
 	return ret;
 }
···
 
 	fec_enet_clk_enable(ndev, false);
 	pinctrl_pm_select_sleep_state(&fep->pdev->dev);
-	pm_runtime_mark_last_busy(&fep->pdev->dev);
-	pm_runtime_put_autosuspend(&fep->pdev->dev);
-
 	fec_enet_free_buffers(ndev);
 
 	return 0;
···
 	if (ret)
 		goto failed_clk;
 
-	ret = clk_prepare_enable(fep->clk_ipg);
-	if (ret)
-		goto failed_clk_ipg;
-
 	fep->reg_phy = devm_regulator_get(&pdev->dev, "phy");
 	if (!IS_ERR(fep->reg_phy)) {
 		ret = regulator_enable(fep->reg_phy);
···
 	netif_carrier_off(ndev);
 	fec_enet_clk_enable(ndev, false);
 	pinctrl_pm_select_sleep_state(&pdev->dev);
-	pm_runtime_set_active(&pdev->dev);
-	pm_runtime_enable(&pdev->dev);
 
 	ret = register_netdev(ndev);
 	if (ret)
···
 
 	fep->rx_copybreak = COPYBREAK_DEFAULT;
 	INIT_WORK(&fep->tx_timeout_work, fec_enet_timeout_work);
-
-	pm_runtime_set_autosuspend_delay(&pdev->dev, FEC_MDIO_PM_TIMEOUT);
-	pm_runtime_use_autosuspend(&pdev->dev);
-	pm_runtime_mark_last_busy(&pdev->dev);
-	pm_runtime_put_autosuspend(&pdev->dev);
-
 	return 0;
 
 failed_register:
···
 	if (fep->reg_phy)
 		regulator_disable(fep->reg_phy);
 failed_regulator:
-	clk_disable_unprepare(fep->clk_ipg);
-failed_clk_ipg:
 	fec_enet_clk_enable(ndev, false);
 failed_clk:
 failed_phy:
···
 	return ret;
 }
 
-static int __maybe_unused fec_runtime_suspend(struct device *dev)
-{
-	struct net_device *ndev = dev_get_drvdata(dev);
-	struct fec_enet_private *fep = netdev_priv(ndev);
-
-	clk_disable_unprepare(fep->clk_ipg);
-
-	return 0;
-}
-
-static int __maybe_unused fec_runtime_resume(struct device *dev)
-{
-	struct net_device *ndev = dev_get_drvdata(dev);
-	struct fec_enet_private *fep = netdev_priv(ndev);
-
-	return clk_prepare_enable(fep->clk_ipg);
-}
-
-static const struct dev_pm_ops fec_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(fec_suspend, fec_resume)
-	SET_RUNTIME_PM_OPS(fec_runtime_suspend, fec_runtime_resume, NULL)
-};
+static SIMPLE_DEV_PM_OPS(fec_pm_ops, fec_suspend, fec_resume);
 
 static struct platform_driver fec_driver = {
 	.driver	= {

drivers/net/ethernet/marvell/mvneta.c

···
 		     struct mvneta_rx_queue *rxq)
 {
 	struct net_device *dev = pp->dev;
-	int rx_done, rx_filled;
+	int rx_done;
 	u32 rcvd_pkts = 0;
 	u32 rcvd_bytes = 0;
 
···
 		rx_todo = rx_done;
 
 	rx_done = 0;
-	rx_filled = 0;
 
 	/* Fairness NAPI loop */
 	while (rx_done < rx_todo) {
···
 		int rx_bytes, err;
 
 		rx_done++;
-		rx_filled++;
 		rx_status = rx_desc->status;
 		rx_bytes = rx_desc->data_size - (ETH_FCS_LEN + MVNETA_MH_SIZE);
 		data = (unsigned char *)rx_desc->buf_cookie;
···
 			continue;
 		}
 
+		/* Refill processing */
+		err = mvneta_rx_refill(pp, rx_desc);
+		if (err) {
+			netdev_err(dev, "Linux processing - Can't refill\n");
+			rxq->missed++;
+			goto err_drop_frame;
+		}
+
 		skb = build_skb(data, pp->frag_size > PAGE_SIZE ? 0 : pp->frag_size);
 		if (!skb)
 			goto err_drop_frame;
···
 		mvneta_rx_csum(pp, rx_status, skb);
 
 		napi_gro_receive(&pp->napi, skb);
-
-		/* Refill processing */
-		err = mvneta_rx_refill(pp, rx_desc);
-		if (err) {
-			netdev_err(dev, "Linux processing - Can't refill\n");
-			rxq->missed++;
-			rx_filled--;
-		}
 	}
 
 	if (rcvd_pkts) {
···
 	}
 
 	/* Update rxq management counters */
-	mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_filled);
+	mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done);
 
 	return rx_done;
 }

drivers/net/ethernet/renesas/ravb_main.c

···
 	struct ravb_desc *desc = NULL;
 	int rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
 	int tx_ring_size = sizeof(*tx_desc) * priv->num_tx_ring[q];
-	struct sk_buff *skb;
 	dma_addr_t dma_addr;
-	void *buffer;
 	int i;
 
 	priv->cur_rx[q] = 0;
···
 	memset(priv->rx_ring[q], 0, rx_ring_size);
 	/* Build RX ring buffer */
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
-		priv->rx_skb[q][i] = NULL;
-		skb = netdev_alloc_skb(ndev, PKT_BUF_SZ + RAVB_ALIGN - 1);
-		if (!skb)
-			break;
-		ravb_set_buffer_align(skb);
 		/* RX descriptor */
 		rx_desc = &priv->rx_ring[q][i];
 		/* The size of the buffer should be on 16-byte boundary. */
 		rx_desc->ds_cc = cpu_to_le16(ALIGN(PKT_BUF_SZ, 16));
-		dma_addr = dma_map_single(&ndev->dev, skb->data,
+		dma_addr = dma_map_single(&ndev->dev, priv->rx_skb[q][i]->data,
 					  ALIGN(PKT_BUF_SZ, 16),
 					  DMA_FROM_DEVICE);
-		if (dma_mapping_error(&ndev->dev, dma_addr)) {
-			dev_kfree_skb(skb);
-			break;
-		}
-		priv->rx_skb[q][i] = skb;
+		/* We just set the data size to 0 for a failed mapping which
+		 * should prevent DMA from happening...
+		 */
+		if (dma_mapping_error(&ndev->dev, dma_addr))
+			rx_desc->ds_cc = cpu_to_le16(0);
 		rx_desc->dptr = cpu_to_le32(dma_addr);
 		rx_desc->die_dt = DT_FEMPTY;
 	}
 	rx_desc = &priv->rx_ring[q][i];
 	rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
 	rx_desc->die_dt = DT_LINKFIX; /* type */
-	priv->dirty_rx[q] = (u32)(i - priv->num_rx_ring[q]);
 
 	memset(priv->tx_ring[q], 0, tx_ring_size);
 	/* Build TX ring buffer */
 	for (i = 0; i < priv->num_tx_ring[q]; i++) {
-		priv->tx_skb[q][i] = NULL;
-		priv->tx_buffers[q][i] = NULL;
-		buffer = kmalloc(PKT_BUF_SZ + RAVB_ALIGN - 1, GFP_KERNEL);
-		if (!buffer)
-			break;
-		/* Aligned TX buffer */
-		priv->tx_buffers[q][i] = buffer;
 		tx_desc = &priv->tx_ring[q][i];
 		tx_desc->die_dt = DT_EEMPTY;
 	}
···
 static int ravb_ring_init(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
+	struct sk_buff *skb;
 	int ring_size;
+	void *buffer;
+	int i;
 
 	/* Allocate RX and TX skb rings */
 	priv->rx_skb[q] = kcalloc(priv->num_rx_ring[q],
···
 	if (!priv->rx_skb[q] || !priv->tx_skb[q])
 		goto error;
 
+	for (i = 0; i < priv->num_rx_ring[q]; i++) {
+		skb = netdev_alloc_skb(ndev, PKT_BUF_SZ + RAVB_ALIGN - 1);
+		if (!skb)
+			goto error;
+		ravb_set_buffer_align(skb);
+		priv->rx_skb[q][i] = skb;
+	}
+
 	/* Allocate rings for the aligned buffers */
 	priv->tx_buffers[q] = kcalloc(priv->num_tx_ring[q],
 				      sizeof(*priv->tx_buffers[q]), GFP_KERNEL);
 	if (!priv->tx_buffers[q])
 		goto error;
+
+	for (i = 0; i < priv->num_tx_ring[q]; i++) {
+		buffer = kmalloc(PKT_BUF_SZ + RAVB_ALIGN - 1, GFP_KERNEL);
+		if (!buffer)
+			goto error;
+		/* Aligned TX buffer */
+		priv->tx_buffers[q][i] = buffer;
+	}
 
 	/* Allocate all RX descriptors. */
 	ring_size = sizeof(struct ravb_ex_rx_desc) * (priv->num_rx_ring[q] + 1);
···
 		if (--boguscnt < 0)
 			break;
 
+		/* We use 0-byte descriptors to mark the DMA mapping errors */
+		if (!pkt_len)
+			continue;
+
 		if (desc_status & MSC_MC)
 			stats->multicast++;
 
···
 
 			skb = priv->rx_skb[q][entry];
 			priv->rx_skb[q][entry] = NULL;
-			dma_sync_single_for_cpu(&ndev->dev,
-						le32_to_cpu(desc->dptr),
-						ALIGN(PKT_BUF_SZ, 16),
-						DMA_FROM_DEVICE);
+			dma_unmap_single(&ndev->dev, le32_to_cpu(desc->dptr),
+					 ALIGN(PKT_BUF_SZ, 16),
+					 DMA_FROM_DEVICE);
 			get_ts &= (q == RAVB_NC) ?
 					RAVB_RXTSTAMP_TYPE_V2_L2_EVENT :
 					~RAVB_RXTSTAMP_TYPE_V2_L2_EVENT;
···
 			if (!skb)
 				break;	/* Better luck next round. */
 			ravb_set_buffer_align(skb);
-			dma_unmap_single(&ndev->dev, le32_to_cpu(desc->dptr),
-					 ALIGN(PKT_BUF_SZ, 16),
-					 DMA_FROM_DEVICE);
 			dma_addr = dma_map_single(&ndev->dev, skb->data,
 						  le16_to_cpu(desc->ds_cc),
 						  DMA_FROM_DEVICE);
 			skb_checksum_none_assert(skb);
-			if (dma_mapping_error(&ndev->dev, dma_addr)) {
-				dev_kfree_skb_any(skb);
-				break;
-			}
+			/* We just set the data size to 0 for a failed mapping
+			 * which should prevent DMA  from happening...
+			 */
+			if (dma_mapping_error(&ndev->dev, dma_addr))
+				desc->ds_cc = cpu_to_le16(0);
 			desc->dptr = cpu_to_le32(dma_addr);
 			priv->rx_skb[q][entry] = skb;
 		}
···
 	u32 dma_addr;
 	void *buffer;
 	u32 entry;
-	u32 tccr;
 
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->cur_tx[q] - priv->dirty_tx[q] >= priv->num_tx_ring[q]) {
···
 	dma_wmb();
 	desc->die_dt = DT_FSINGLE;
 
-	tccr = ravb_read(ndev, TCCR);
-	if (!(tccr & (TCCR_TSRQ0 << q)))
-		ravb_write(ndev, tccr | (TCCR_TSRQ0 << q), TCCR);
+	ravb_write(ndev, ravb_read(ndev, TCCR) | (TCCR_TSRQ0 << q), TCCR);
 
 	priv->cur_tx[q]++;
 	if (priv->cur_tx[q] - priv->dirty_tx[q] >= priv->num_tx_ring[q] &&

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

···
 	if (res->mac)
 		memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);
 
-	dev_set_drvdata(device, priv);
+	dev_set_drvdata(device, priv->dev);
 
 	/* Verify driver arguments */
 	stmmac_verify_args();

drivers/net/ethernet/ti/cpsw.c

···
 static int cpsw_poll(struct napi_struct *napi, int budget)
 {
 	struct cpsw_priv	*priv = napi_to_priv(napi);
-	int			num_tx, num_rx;
-
-	num_tx = cpdma_chan_process(priv->txch, 128);
+	int			num_rx;
 
 	num_rx = cpdma_chan_process(priv->rxch, budget);
 	if (num_rx < budget) {
···
 		}
 	}
 
-	if (num_rx || num_tx)
-		cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
-			 num_rx, num_tx);
+	if (num_rx)
+		cpsw_dbg(priv, intr, "poll %d rx pkts\n", num_rx);
 
 	return num_rx;
 }

drivers/net/ethernet/ti/netcp_core.c

···
 	}
 	mutex_unlock(&netcp_modules_lock);
 
-	netcp_rxpool_refill(netcp);
 	napi_enable(&netcp->rx_napi);
 	napi_enable(&netcp->tx_napi);
 	knav_queue_enable_notify(netcp->tx_compl_q);
 	knav_queue_enable_notify(netcp->rx_queue);
+	netcp_rxpool_refill(netcp);
 	netif_tx_wake_all_queues(ndev);
 	dev_dbg(netcp->ndev_dev, "netcp device %s opened\n", ndev->name);
 	return 0;

drivers/net/ipvlan/ipvlan.h

···
 	struct ipvl_port	*port;
 	struct net_device	*phy_dev;
 	struct list_head	addrs;
-	int			ipv4cnt;
-	int			ipv6cnt;
 	struct ipvl_pcpu_stats	__percpu *pcpu_stats;
 	DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
 	netdev_features_t	sfeatures;
···
 	return rcu_dereference(d->rx_handler_data);
 }
 
+static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d)
+{
+	return rcu_dereference_bh(d->rx_handler_data);
+}
+
 static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
 {
 	return rtnl_dereference(d->rx_handler_data);
···
 bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6);
 struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port,
 					const void *iaddr, bool is_v6);
-void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync);
+void ipvlan_ht_addr_del(struct ipvl_addr *addr);
 #endif /* __IPVLAN_H */

drivers/net/ipvlan/ipvlan_core.c

···
 		hlist_add_head_rcu(&addr->hlnode, &port->hlhead[hash]);
 }
 
-void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync)
+void ipvlan_ht_addr_del(struct ipvl_addr *addr)
 {
 	hlist_del_init_rcu(&addr->hlnode);
-	if (sync)
-		synchronize_rcu();
 }
 
 struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan,
···
 int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ipvl_dev *ipvlan = netdev_priv(dev);
-	struct ipvl_port *port = ipvlan_port_get_rcu(ipvlan->phy_dev);
+	struct ipvl_port *port = ipvlan_port_get_rcu_bh(ipvlan->phy_dev);
 
 	if (!port)
 		goto out;

drivers/net/ipvlan/ipvlan_main.c

···
 	else
 		dev->flags &= ~IFF_NOARP;
 
-	if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
-		list_for_each_entry(addr, &ipvlan->addrs, anode)
-			ipvlan_ht_addr_add(ipvlan, addr);
-	}
+	list_for_each_entry(addr, &ipvlan->addrs, anode)
+		ipvlan_ht_addr_add(ipvlan, addr);
+
 	return dev_uc_add(phy_dev, phy_dev->dev_addr);
 }
 
···
 
 	dev_uc_del(phy_dev, phy_dev->dev_addr);
 
-	if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
-		list_for_each_entry(addr, &ipvlan->addrs, anode)
-			ipvlan_ht_addr_del(addr, !dev->dismantle);
-	}
+	list_for_each_entry(addr, &ipvlan->addrs, anode)
+		ipvlan_ht_addr_del(addr);
+
 	return 0;
 }
 
···
 	ipvlan->port = port;
 	ipvlan->sfeatures = IPVLAN_FEATURES;
 	INIT_LIST_HEAD(&ipvlan->addrs);
-	ipvlan->ipv4cnt = 0;
-	ipvlan->ipv6cnt = 0;
 
 	/* TODO Probably put random address here to be presented to the
 	 * world but keep using the physical-dev address for the outgoing
···
 	struct ipvl_dev *ipvlan = netdev_priv(dev);
 	struct ipvl_addr *addr, *next;
 
-	if (ipvlan->ipv6cnt > 0 || ipvlan->ipv4cnt > 0) {
-		list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) {
-			ipvlan_ht_addr_del(addr, !dev->dismantle);
-			list_del(&addr->anode);
-		}
+	list_for_each_entry_safe(addr, next, &ipvlan->addrs, anode) {
+		ipvlan_ht_addr_del(addr);
+		list_del(&addr->anode);
+		kfree_rcu(addr, rcu);
 	}
+
 	list_del_rcu(&ipvlan->pnode);
 	unregister_netdevice_queue(dev, head);
 	netdev_upper_dev_unlink(ipvlan->phy_dev, dev);
···
 	memcpy(&addr->ip6addr, ip6_addr, sizeof(struct in6_addr));
 	addr->atype = IPVL_IPV6;
 	list_add_tail(&addr->anode, &ipvlan->addrs);
-	ipvlan->ipv6cnt++;
+
 	/* If the interface is not up, the address will be added to the hash
 	 * list by ipvlan_open.
 	 */
···
 	if (!addr)
 		return;
 
-	ipvlan_ht_addr_del(addr, true);
+	ipvlan_ht_addr_del(addr);
 	list_del(&addr->anode);
-	ipvlan->ipv6cnt--;
-	WARN_ON(ipvlan->ipv6cnt < 0);
 	kfree_rcu(addr, rcu);
 
 	return;
···
 	struct inet6_ifaddr *if6 = (struct inet6_ifaddr *)ptr;
 	struct net_device *dev = (struct net_device *)if6->idev->dev;
 	struct ipvl_dev *ipvlan = netdev_priv(dev);
+
+	/* FIXME IPv6 autoconf calls us from bh without RTNL */
+	if (in_softirq())
+		return NOTIFY_DONE;
 
 	if (!netif_is_ipvlan(dev))
 		return NOTIFY_DONE;
···
 	memcpy(&addr->ip4addr, ip4_addr, sizeof(struct in_addr));
 	addr->atype = IPVL_IPV4;
 	list_add_tail(&addr->anode, &ipvlan->addrs);
-	ipvlan->ipv4cnt++;
+
 	/* If the interface is not up, the address will be added to the hash
 	 * list by ipvlan_open.
 	 */
···
 	if (!addr)
 		return;
 
-	ipvlan_ht_addr_del(addr, true);
+	ipvlan_ht_addr_del(addr);
 	list_del(&addr->anode);
-	ipvlan->ipv4cnt--;
-	WARN_ON(ipvlan->ipv4cnt < 0);
 	kfree_rcu(addr, rcu);
 
 	return;

drivers/net/phy/dp83867.c

···
 			return ret;
 	}
 
-	if ((phydev->interface >= PHY_INTERFACE_MODE_RGMII_ID) ||
+	if ((phydev->interface >= PHY_INTERFACE_MODE_RGMII_ID) &&
 	    (phydev->interface <= PHY_INTERFACE_MODE_RGMII_RXID)) {
 		val = phy_read_mmd_indirect(phydev, DP83867_RGMIICTL,
 					    DP83867_DEVADDR, phydev->addr);

drivers/net/phy/mdio_bus.c

···
 {
 	struct phy_device *phydev = to_phy_device(dev);
 	struct phy_driver *phydrv = to_phy_driver(drv);
+	const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids);
+	int i;
 
 	if (of_driver_match_device(dev, drv))
 		return 1;
···
 	if (phydrv->match_phy_device)
 		return phydrv->match_phy_device(phydev);
 
-	return (phydrv->phy_id & phydrv->phy_id_mask) ==
-		(phydev->phy_id & phydrv->phy_id_mask);
+	if (phydev->is_c45) {
+		for (i = 1; i < num_ids; i++) {
+			if (!(phydev->c45_ids.devices_in_package & (1 << i)))
+				continue;
+
+			if ((phydrv->phy_id & phydrv->phy_id_mask) ==
+			    (phydev->c45_ids.device_ids[i] &
+			     phydrv->phy_id_mask))
+				return 1;
+		}
+		return 0;
+	} else {
+		return (phydrv->phy_id & phydrv->phy_id_mask) ==
+			(phydev->phy_id & phydrv->phy_id_mask);
+	}
 }
 
 #ifdef CONFIG_PM

drivers/net/usb/qmi_wwan.c

···
 	{QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
 	{QMI_FIXED_INTF(0x1199, 0x901f, 8)},    /* Sierra Wireless EM7355 */
 	{QMI_FIXED_INTF(0x1199, 0x9041, 8)},	/* Sierra Wireless MC7305/MC7355 */
+	{QMI_FIXED_INTF(0x1199, 0x9041, 10)},	/* Sierra Wireless MC7305/MC7355 */
 	{QMI_FIXED_INTF(0x1199, 0x9051, 8)},	/* Netgear AirCard 340U */
 	{QMI_FIXED_INTF(0x1199, 0x9053, 8)},	/* Sierra Wireless Modem */
 	{QMI_FIXED_INTF(0x1199, 0x9054, 8)},	/* Sierra Wireless Modem */

drivers/net/virtio_net.c

···
 	else
 		vi->hdr_len = sizeof(struct virtio_net_hdr);
 
-	if (virtio_has_feature(vdev, VIRTIO_F_ANY_LAYOUT))
+	if (virtio_has_feature(vdev, VIRTIO_F_ANY_LAYOUT) ||
+	    virtio_has_feature(vdev, VIRTIO_F_VERSION_1))
 		vi->any_header_sg = true;
 
 	if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ))

drivers/net/wireless/ath/ath9k/hw.c

···
 		return;
 	case AR9300_DEVID_QCA956X:
 		ah->hw_version.macVersion = AR_SREV_VERSION_9561;
+		return;
 	}
 
 	val = REG_READ(ah, AR_SREV) & AR_SREV_ID;

drivers/net/wireless/iwlwifi/iwl-fh.h

···
 #define RX_QUEUE_MASK                         255
 #define RX_QUEUE_SIZE_LOG                     8
 
+/*
+ * RX related structures and functions
+ */
+#define RX_FREE_BUFFERS 64
+#define RX_LOW_WATERMARK 8
+
 /**
  * struct iwl_rb_status - reserve buffer status
  * 	host memory mapped FH registers

drivers/net/wireless/iwlwifi/iwl-nvm-parse.c

···
 		hw_addr = (const u8 *)(mac_override +
 				 MAC_ADDRESS_OVERRIDE_FAMILY_8000);
 
-		/* The byte order is little endian 16 bit, meaning 214365 */
-		data->hw_addr[0] = hw_addr[1];
-		data->hw_addr[1] = hw_addr[0];
-		data->hw_addr[2] = hw_addr[3];
-		data->hw_addr[3] = hw_addr[2];
-		data->hw_addr[4] = hw_addr[5];
-		data->hw_addr[5] = hw_addr[4];
+		/*
+		 * Store the MAC address from MAO section.
+		 * No byte swapping is required in MAO section
+		 */
+		memcpy(data->hw_addr, hw_addr, ETH_ALEN);
 
 		/*
 		 * Force the use of the OTP MAC address in case of reserved MAC

drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h

···
  * iwl_umac_scan_flags
  *@IWL_UMAC_SCAN_FLAG_PREEMPTIVE: scan process triggered by this scan request
  *	can be preempted by other scan requests with higher priority.
- *	The low priority scan is aborted.
+ *	The low priority scan will be resumed when the higher proirity scan is
+ *	completed.
  *@IWL_UMAC_SCAN_FLAG_START_NOTIF: notification will be sent to the driver
  *	when scan starts.
  */

drivers/net/wireless/iwlwifi/mvm/scan.c

···
 	cmd->uid = cpu_to_le32(uid);
 	cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params));
 
+	if (type == IWL_MVM_SCAN_SCHED)
+		cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
+
 	if (iwl_mvm_scan_use_ebs(mvm, vif, n_iterations))
 		cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
 				     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |

drivers/net/wireless/iwlwifi/mvm/sta.c

···
 	bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);
 	u8 sta_id;
 	int ret;
+	static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};
 
 	lockdep_assert_held(&mvm->mutex);
 
···
 end:
 	IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
 		      keyconf->cipher, keyconf->keylen, keyconf->keyidx,
-		      sta->addr, ret);
+		      sta ? sta->addr : zero_addr, ret);
 	return ret;
 }
 

drivers/net/wireless/iwlwifi/mvm/time-event.c

···
 {
 	lockdep_assert_held(&mvm->time_event_lock);
 
-	if (te_data->id == TE_MAX)
+	if (!te_data->vif)
 		return;
 
 	list_del(&te_data->list);

drivers/net/wireless/iwlwifi/mvm/tx.c

···
 
 	if (info->band == IEEE80211_BAND_2GHZ &&
 	    !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
-		rate_flags = BIT(mvm->cfg->non_shared_ant) << RATE_MCS_ANT_POS;
+		rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
 	else
 		rate_flags =
 			BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;

drivers/net/wireless/iwlwifi/pcie/drv.c

···
 /* 3165 Series */
 	{IWL_PCI_DEVICE(0x3165, 0x4010, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3165, 0x4012, iwl3165_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x3166, 0x4212, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3165, 0x4410, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3165, 0x4510, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3165, 0x4110, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3166, 0x4310, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3166, 0x4210, iwl3165_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x3165, 0x8010, iwl3165_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x3165, 0x8110, iwl3165_2ac_cfg)},
 
 /* 7265 Series */
 	{IWL_PCI_DEVICE(0x095A, 0x5010, iwl7265_2ac_cfg)},
···
 	{IWL_PCI_DEVICE(0x24F4, 0x1130, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F4, 0x1030, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xC010, iwl8260_2ac_cfg)},
+	{IWL_PCI_DEVICE(0x24F3, 0xC110, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xD010, iwl8260_2ac_cfg)},
-	{IWL_PCI_DEVICE(0x24F4, 0xC030, iwl8260_2ac_cfg)},
-	{IWL_PCI_DEVICE(0x24F4, 0xD030, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xC050, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0xD050, iwl8260_2ac_cfg)},
 	{IWL_PCI_DEVICE(0x24F3, 0x8010, iwl8260_2ac_cfg)},

drivers/net/wireless/iwlwifi/pcie/internal.h

···
 #include "iwl-io.h"
 #include "iwl-op-mode.h"
 
-/*
- * RX related structures and functions
- */
-#define RX_NUM_QUEUES 1
-#define RX_POST_REQ_ALLOC 2
-#define RX_CLAIM_REQ_ALLOC 8
-#define RX_POOL_SIZE ((RX_CLAIM_REQ_ALLOC - RX_POST_REQ_ALLOC) * RX_NUM_QUEUES)
-#define RX_LOW_WATERMARK 8
-
 struct iwl_host_cmd;
 
 /*This file includes the declaration that are internal to the
···
  * struct iwl_rxq - Rx queue
  * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
  * @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
+ * @pool:
+ * @queue:
  * @read: Shared index to newest available Rx buffer
  * @write: Shared index to oldest written Rx packet
  * @free_count: Number of pre-allocated buffers in rx_free
- * @used_count: Number of RBDs handled to allocator to use for allocation
  * @write_actual:
- * @rx_free: list of RBDs with allocated RB ready for use
- * @rx_used: list of RBDs with no RB attached
+ * @rx_free: list of free SKBs for use
+ * @rx_used: List of Rx buffers with no SKB
  * @need_update: flag to indicate we need to update read/write index
  * @rb_stts: driver's pointer to receive buffer status
  * @rb_stts_dma: bus address of receive buffer status
  * @lock:
- * @pool: initial pool of iwl_rx_mem_buffer for the queue
- * @queue: actual rx queue
  *
  * NOTE:  rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
  */
 struct iwl_rxq {
 	__le32 *bd;
 	dma_addr_t bd_dma;
+	struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
+	struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
 	u32 read;
 	u32 write;
 	u32 free_count;
-	u32 used_count;
 	u32 write_actual;
 	struct list_head rx_free;
 	struct list_head rx_used;
···
 	struct iwl_rb_status *rb_stts;
 	dma_addr_t rb_stts_dma;
 	spinlock_t lock;
-	struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE];
-	struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
-};
-
-/**
- * struct iwl_rb_allocator - Rx allocator
- * @pool: initial pool of allocator
- * @req_pending: number of requests the allcator had not processed yet
- * @req_ready: number of requests honored and ready for claiming
- * @rbd_allocated: RBDs with pages allocated and ready to be handled to
- *	the queue. This is a list of &struct iwl_rx_mem_buffer
- * @rbd_empty: RBDs with no page attached for allocator use. This is a list
- *	of &struct iwl_rx_mem_buffer
- * @lock: protects the rbd_allocated and rbd_empty lists
- * @alloc_wq: work queue for background calls
- * @rx_alloc: work struct for background calls
- */
-struct iwl_rb_allocator {
-	struct iwl_rx_mem_buffer pool[RX_POOL_SIZE];
-	atomic_t req_pending;
-	atomic_t req_ready;
-	struct list_head rbd_allocated;
-	struct list_head rbd_empty;
-	spinlock_t lock;
-	struct workqueue_struct *alloc_wq;
-	struct work_struct rx_alloc;
 };
 
 struct iwl_dma_ptr {
···
 /**
  * struct iwl_trans_pcie - PCIe transport specific data
  * @rxq: all the RX queue data
- * @rba: allocator for RX replenishing
+ * @rx_replenish: work that will be called when buffers need to be allocated
  * @drv - pointer to iwl_drv
  * @trans: pointer to the generic transport area
  * @scd_base_addr: scheduler sram base address in SRAM
···
  */
 struct iwl_trans_pcie {
 	struct iwl_rxq rxq;
-	struct iwl_rb_allocator rba;
+	struct work_struct rx_replenish;
 	struct iwl_trans *trans;
 	struct iwl_drv *drv;
 

drivers/net/wireless/iwlwifi/pcie/rx.c

···
 /******************************************************************************
  *
  * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
···
  * resets the Rx queue buffers with new memory.
  *
  * The management in the driver is as follows:
- * + A list of pre-allocated RBDs is stored in iwl->rxq->rx_free.
- *   When the interrupt handler is called, the request is processed.
- *   The page is either stolen - transferred to the upper layer
- *   or reused - added immediately to the iwl->rxq->rx_free list.
- * + When the page is stolen - the driver updates the matching queue's used
- *   count, detaches the RBD and transfers it to the queue used list.
- *   When there are two used RBDs - they are transferred to the allocator empty
- *   list. Work is then scheduled for the allocator to start allocating
- *   eight buffers.
- *   When there are another 6 used RBDs - they are transferred to the allocator
- *   empty list and the driver tries to claim the pre-allocated buffers and
- *   add them to iwl->rxq->rx_free. If it fails - it continues to claim them
- *   until ready.
- *   When there are 8+ buffers in the free list - either from allocation or from
- *   8 reused unstolen pages - restock is called to update the FW and indexes.
- * + In order to make sure the allocator always has RBDs to use for allocation
- *   the allocator has initial pool in the size of num_queues*(8-2) - the
- *   maximum missing RBDs per allocation request (request posted with 2
- *    empty RBDs, there is no guarantee when the other 6 RBDs are supplied).
- *   The queues supplies the recycle of the rest of the RBDs.
+ * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
+ *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
+ *   to replenish the iwl->rxq->rx_free.
+ * + In iwl_pcie_rx_replenish (scheduled) if 'processed' != 'read' then the
+ *   iwl->rxq is replenished and the READ INDEX is updated (updating the
+ *   'processed' and 'read' driver indexes as well)
  * + A received packet is processed and handed to the kernel network stack,
  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
- * + If there are no allocated buffers in iwl->rxq->rx_free,
+ * + The Host/Firmware iwl->rxq is replenished at irq thread time from the
+ *   rx_free list. If there are no allocated buffers in iwl->rxq->rx_free,
  *   the READ INDEX is not incremented and iwl->status(RX_STALLED) is set.
  *   If there were enough free buffers and RX_STALLED is set it is cleared.
  *
···
  *
  * iwl_rxq_alloc()            Allocates rx_free
  * iwl_pcie_rx_replenish()    Replenishes rx_free list from rx_used, and calls
- *                            iwl_pcie_rxq_restock.
- *                            Used only during initialization.
+ *                            iwl_pcie_rxq_restock
  * iwl_pcie_rxq_restock()     Moves available buffers from rx_free into Rx
  *                            queue, updates firmware pointers, and updates
- *                            the WRITE index.
- * iwl_pcie_rx_allocator()     Background work for allocating pages.
+ *                            the WRITE index.  If insufficient rx_free buffers
+ *                            are available, schedules iwl_pcie_rx_replenish
  *
  * -- enable interrupts --
  * ISR - iwl_rx()             Detach iwl_rx_mem_buffers from pool up to the
  *                            READ INDEX, detaching the SKB from the pool.
  *                            Moves the packet buffer from queue to rx_used.
- *                            Posts and claims requests to the allocator.
  *                            Calls iwl_pcie_rxq_restock to refill any empty
  *                            slots.
- *
- * RBD life-cycle:
- *
- * Init:
- * rxq.pool -> rxq.rx_used -> rxq.rx_free -> rxq.queue
- *
- * Regular Receive interrupt:
- * Page Stolen:
- * rxq.queue -> rxq.rx_used -> allocator.rbd_empty ->
- * allocator.rbd_allocated -> rxq.rx_free -> rxq.queue
- * Page not Stolen:
- * rxq.queue -> rxq.rx_free -> rxq.queue
  * ...
  *
  */
···
 		rxq->free_count--;
 	}
 	spin_unlock(&rxq->lock);
+	/* If the pre-allocated buffer pool is dropping low, schedule to
+	 * refill it */
+	if (rxq->free_count <= RX_LOW_WATERMARK)
+		schedule_work(&trans_pcie->rx_replenish);
 
 	/* If we've added more space for the firmware to place data, tell it.
 	 * Increment device's write pointer in multiples of 8. */
···
 }
 
 /*
- * iwl_pcie_rx_alloc_page - allocates and returns a page.
- *
- */
-static struct page *iwl_pcie_rx_alloc_page(struct iwl_trans *trans)
-{
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_rxq *rxq = &trans_pcie->rxq;
-	struct page *page;
-	gfp_t gfp_mask = GFP_KERNEL;
-
-	if (rxq->free_count > RX_LOW_WATERMARK)
-		gfp_mask |= __GFP_NOWARN;
-
-	if (trans_pcie->rx_page_order > 0)
-		gfp_mask |= __GFP_COMP;
-
-	/* Alloc a new receive buffer */
-	page = alloc_pages(gfp_mask, trans_pcie->rx_page_order);
-	if (!page) {
-		if (net_ratelimit())
-			IWL_DEBUG_INFO(trans, "alloc_pages failed, order: %d\n",
-				       trans_pcie->rx_page_order);
-		/* Issue an error if the hardware has consumed more than half
-		 * of its free buffer list and we don't have enough
-		 * pre-allocated buffers.
-`		 */
-		if (rxq->free_count <= RX_LOW_WATERMARK &&
-		    iwl_rxq_space(rxq) > (RX_QUEUE_SIZE / 2) &&
-		    net_ratelimit())
-			IWL_CRIT(trans,
-				 "Failed to alloc_pages with GFP_KERNEL. Only %u free buffers remaining.\n",
-				 rxq->free_count);
-		return NULL;
-	}
-	return page;
-}
-
-/*
  * iwl_pcie_rxq_alloc_rbs - allocate a page for each used RBD
  *
  * A used RBD is an Rx buffer that has been given to the stack. To use it again
···
  * iwl_pcie_rxq_restock. The latter function will update the HW to use the newly
  * allocated buffers.
  */
-static void iwl_pcie_rxq_alloc_rbs(struct iwl_trans *trans)
+static void iwl_pcie_rxq_alloc_rbs(struct iwl_trans *trans, gfp_t priority)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *rxq = &trans_pcie->rxq;
 	struct iwl_rx_mem_buffer *rxb;
 	struct page *page;
+	gfp_t gfp_mask = priority;
 
 	while (1) {
 		spin_lock(&rxq->lock);
···
 		}
 		spin_unlock(&rxq->lock);
 
+		if (rxq->free_count > RX_LOW_WATERMARK)
+			gfp_mask |= __GFP_NOWARN;
+
+		if (trans_pcie->rx_page_order > 0)
+			gfp_mask |= __GFP_COMP;
+
 		/* Alloc a new receive buffer */
-		page = iwl_pcie_rx_alloc_page(trans);
-		if (!page)
+		page = alloc_pages(gfp_mask, trans_pcie->rx_page_order);
+		if (!page) {
+			if (net_ratelimit())
+				IWL_DEBUG_INFO(trans, "alloc_pages failed, "
+					   "order: %d\n",
+					   trans_pcie->rx_page_order);
+
+			if ((rxq->free_count <= RX_LOW_WATERMARK) &&
+			    net_ratelimit())
+				IWL_CRIT(trans, "Failed to alloc_pages with %s."
+					 "Only %u free buffers remaining.\n",
+					 priority == GFP_ATOMIC ?
+					 "GFP_ATOMIC" : "GFP_KERNEL",
+					 rxq->free_count);
+			/* We don't reschedule replenish work here -- we will
+			 * call the restock method and if it still needs
+			 * more buffers it will schedule replenish */
 			return;
+		}
 
 		spin_lock(&rxq->lock);
 
···
 
 	lockdep_assert_held(&rxq->lock);
 
-	for (i = 0; i < RX_QUEUE_SIZE; i++) {
+	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
 		if (!rxq->pool[i].page)
 			continue;
 		dma_unmap_page(trans->dev, rxq->pool[i].page_dma,
···
  * When moving to rx_free an page is allocated for the slot.
  *
  * Also restock the Rx queue via iwl_pcie_rxq_restock.
- * This is called only during initialization
+ * This is called as a scheduled work item (except for during initialization)
  */
-static void iwl_pcie_rx_replenish(struct iwl_trans *trans)
+static void iwl_pcie_rx_replenish(struct iwl_trans *trans, gfp_t gfp)
 {
-	iwl_pcie_rxq_alloc_rbs(trans);
+	iwl_pcie_rxq_alloc_rbs(trans, gfp);
 
 	iwl_pcie_rxq_restock(trans);
 }
 
-/*
- * iwl_pcie_rx_allocator - Allocates pages in the background for RX queues
- *
- * Allocates for each received request 8 pages
- * Called as a scheduled work item.
- */
-static void iwl_pcie_rx_allocator(struct iwl_trans *trans)
+static void iwl_pcie_rx_replenish_work(struct work_struct *data)
 {
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
-
-	while (atomic_read(&rba->req_pending)) {
-		int i;
-		struct list_head local_empty;
-		struct list_head local_allocated;
-
-		INIT_LIST_HEAD(&local_allocated);
-		spin_lock(&rba->lock);
-		/* swap out the entire rba->rbd_empty to a local list */
-		list_replace_init(&rba->rbd_empty, &local_empty);
-		spin_unlock(&rba->lock);
-
-		for (i = 0; i < RX_CLAIM_REQ_ALLOC;) {
-			struct iwl_rx_mem_buffer *rxb;
-			struct page *page;
-
-			/* List should never be empty - each reused RBD is
-			 * returned to the list, and initial pool covers any
-			 * possible gap between the time the page is allocated
-			 * to the time the RBD is added.
-			 */
-			BUG_ON(list_empty(&local_empty));
-			/* Get the first rxb from the rbd list */
-			rxb = list_first_entry(&local_empty,
-					       struct iwl_rx_mem_buffer, list);
-			BUG_ON(rxb->page);
-
-			/* Alloc a new receive buffer */
-			page = iwl_pcie_rx_alloc_page(trans);
-			if (!page)
-				continue;
-			rxb->page = page;
-
-			/* Get physical address of the RB */
-			rxb->page_dma = dma_map_page(trans->dev, page, 0,
-					PAGE_SIZE << trans_pcie->rx_page_order,
-					DMA_FROM_DEVICE);
-			if (dma_mapping_error(trans->dev, rxb->page_dma)) {
-				rxb->page = NULL;
-				__free_pages(page, trans_pcie->rx_page_order);
-				continue;
-			}
-			/* dma address must be no more than 36 bits */
-			BUG_ON(rxb->page_dma & ~DMA_BIT_MASK(36));
-			/* and also 256 byte aligned! */
-			BUG_ON(rxb->page_dma & DMA_BIT_MASK(8));
-
-			/* move the allocated entry to the out list */
-			list_move(&rxb->list, &local_allocated);
-			i++;
-		}
-
-		spin_lock(&rba->lock);
-		/* add the allocated rbds to the allocator allocated list */
-		list_splice_tail(&local_allocated, &rba->rbd_allocated);
-		/* add the unused rbds back to the allocator empty list */
-		list_splice_tail(&local_empty, &rba->rbd_empty);
-		spin_unlock(&rba->lock);
-
-		atomic_dec(&rba->req_pending);
-		atomic_inc(&rba->req_ready);
-	}
-}
-
-/*
- * iwl_pcie_rx_allocator_get - Returns the pre-allocated pages
-.*
-.* Called by queue when the queue posted allocation request and
- * has freed 8 RBDs in order to restock itself.
- */
-static int iwl_pcie_rx_allocator_get(struct iwl_trans *trans,
-				     struct iwl_rx_mem_buffer
-				     *out[RX_CLAIM_REQ_ALLOC])
-{
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
-	int i;
-
-	if (atomic_dec_return(&rba->req_ready) < 0) {
-		atomic_inc(&rba->req_ready);
-		IWL_DEBUG_RX(trans,
-			     "Allocation request not ready, pending requests = %d\n",
-			     atomic_read(&rba->req_pending));
-		return -ENOMEM;
-	}
-
-	spin_lock(&rba->lock);
-	for (i = 0; i < RX_CLAIM_REQ_ALLOC; i++) {
-		/* Get next free Rx buffer, remove it from free list */
-		out[i] = list_first_entry(&rba->rbd_allocated,
-			       struct iwl_rx_mem_buffer, list);
-		list_del(&out[i]->list);
-	}
-	spin_unlock(&rba->lock);
-
-	return 0;
-}
-
-static void iwl_pcie_rx_allocator_work(struct work_struct *data)
-{
-	struct iwl_rb_allocator *rba_p =
-		container_of(data, struct iwl_rb_allocator, rx_alloc);
 	struct iwl_trans_pcie *trans_pcie =
-		container_of(rba_p, struct iwl_trans_pcie, rba);
+	    container_of(data, struct iwl_trans_pcie, rx_replenish);
 
-	iwl_pcie_rx_allocator(trans_pcie->trans);
+	iwl_pcie_rx_replenish(trans_pcie->trans, GFP_KERNEL);
 }
 
 static int iwl_pcie_rx_alloc(struct iwl_trans *trans)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *rxq = &trans_pcie->rxq;
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
 	struct device *dev = trans->dev;
 
 	memset(&trans_pcie->rxq, 0, sizeof(trans_pcie->rxq));
 
 	spin_lock_init(&rxq->lock);
-	spin_lock_init(&rba->lock);
 
 	if (WARN_ON(rxq->bd || rxq->rb_stts))
 		return -EINVAL;
···
 	INIT_LIST_HEAD(&rxq->rx_free);
 	INIT_LIST_HEAD(&rxq->rx_used);
 	rxq->free_count = 0;
-	rxq->used_count = 0;
 
-	for (i = 0; i < RX_QUEUE_SIZE; i++)
+	for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
 		list_add(&rxq->pool[i].list, &rxq->rx_used);
-}
-
-static void iwl_pcie_rx_init_rba(struct iwl_rb_allocator *rba)
-{
-	int i;
-
-	lockdep_assert_held(&rba->lock);
-
-	INIT_LIST_HEAD(&rba->rbd_allocated);
-	INIT_LIST_HEAD(&rba->rbd_empty);
-
-	for (i = 0; i < RX_POOL_SIZE; i++)
-		list_add(&rba->pool[i].list, &rba->rbd_empty);
-}
-
-static void iwl_pcie_rx_free_rba(struct iwl_trans *trans)
-{
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
-	int i;
-
-	lockdep_assert_held(&rba->lock);
-
-	for (i = 0; i < RX_POOL_SIZE; i++) {
-		if (!rba->pool[i].page)
-			continue;
-		dma_unmap_page(trans->dev, rba->pool[i].page_dma,
-			       PAGE_SIZE << trans_pcie->rx_page_order,
-			       DMA_FROM_DEVICE);
-		__free_pages(rba->pool[i].page, trans_pcie->rx_page_order);
-		rba->pool[i].page = NULL;
-	}
 }
 
 int iwl_pcie_rx_init(struct iwl_trans *trans)
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *rxq = &trans_pcie->rxq;
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
 	int i, err;
 
 	if (!rxq->bd) {
···
 		if (err)
 			return err;
 	}
-	if (!rba->alloc_wq)
-		rba->alloc_wq = alloc_workqueue("rb_allocator",
-						WQ_HIGHPRI | WQ_UNBOUND, 1);
-	INIT_WORK(&rba->rx_alloc, iwl_pcie_rx_allocator_work);
-
-	spin_lock(&rba->lock);
-	atomic_set(&rba->req_pending, 0);
-	atomic_set(&rba->req_ready, 0);
-	/* free all first - we might be reconfigured for a different size */
-	iwl_pcie_rx_free_rba(trans);
-	iwl_pcie_rx_init_rba(rba);
-	spin_unlock(&rba->lock);
 
 	spin_lock(&rxq->lock);
+
+	INIT_WORK(&trans_pcie->rx_replenish, iwl_pcie_rx_replenish_work);
 
 	/* free all first - we might be reconfigured for a different size */
 	iwl_pcie_rxq_free_rbs(trans);
···
 	memset(rxq->rb_stts, 0, sizeof(*rxq->rb_stts));
 	spin_unlock(&rxq->lock);
 
-	iwl_pcie_rx_replenish(trans);
+	iwl_pcie_rx_replenish(trans, GFP_KERNEL);
 
 	iwl_pcie_rx_hw_init(trans, rxq);
 
···
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *rxq = &trans_pcie->rxq;
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
 
 	/*if rxq->bd is NULL, it means that nothing has been allocated,
 	 * exit now */
···
 		return;
 	}
 
-	cancel_work_sync(&rba->rx_alloc);
-	if (rba->alloc_wq) {
-		destroy_workqueue(rba->alloc_wq);
-		rba->alloc_wq = NULL;
-	}
-
-	spin_lock(&rba->lock);
-	iwl_pcie_rx_free_rba(trans);
-	spin_unlock(&rba->lock);
+	cancel_work_sync(&trans_pcie->rx_replenish);
 
 	spin_lock(&rxq->lock);
 	iwl_pcie_rxq_free_rbs(trans);
···
 		IWL_DEBUG_INFO(trans, "Free rxq->rb_stts which is NULL\n");
 	rxq->rb_stts_dma = 0;
 	rxq->rb_stts = NULL;
-}
-
-/*
- * iwl_pcie_rx_reuse_rbd - Recycle used RBDs
- *
- * Called when a RBD can be reused. The RBD is transferred to the allocator.
- * When there are 2 empty RBDs - a request for allocation is posted
- */
-static void iwl_pcie_rx_reuse_rbd(struct iwl_trans *trans,
-				  struct iwl_rx_mem_buffer *rxb,
-				  struct iwl_rxq *rxq)
-{
-	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-	struct iwl_rb_allocator *rba = &trans_pcie->rba;
-
-	/* Count the used RBDs */
-	rxq->used_count++;
-
-	/* Move the RBD to the used list, will be moved to allocator in batches
-	 * before claiming or posting a request*/
-	list_add_tail(&rxb->list, &rxq->rx_used);
-
-	/* If we have RX_POST_REQ_ALLOC new released rx buffers -
-	 * issue a request for allocator. Modulo RX_CLAIM_REQ_ALLOC is
-	 * used for the case we failed to claim RX_CLAIM_REQ_ALLOC,
-	 * after but we still need to post another request.
-	 */
-	if ((rxq->used_count % RX_CLAIM_REQ_ALLOC) == RX_POST_REQ_ALLOC) {
-		/* Move the 2 RBDs to the allocator ownership.
-		 Allocator has another 6 from pool for the request completion*/
-		spin_lock(&rba->lock);
-		list_splice_tail_init(&rxq->rx_used, &rba->rbd_empty);
-		spin_unlock(&rba->lock);
-
-		atomic_inc(&rba->req_pending);
-		queue_work(rba->alloc_wq, &rba->rx_alloc);
-	}
 }
 
 static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans,
···
 			 */
 			__free_pages(rxb->page, trans_pcie->rx_page_order);
 			rxb->page = NULL;
-			iwl_pcie_rx_reuse_rbd(trans, rxb, rxq);
+			list_add_tail(&rxb->list, &rxq->rx_used);
 		} else {
 			list_add_tail(&rxb->list, &rxq->rx_free);
 			rxq->free_count++;
 		}
 	} else
-		iwl_pcie_rx_reuse_rbd(trans, rxb, rxq);
+		list_add_tail(&rxb->list, &rxq->rx_used);
 }
 
 /*
···
 {
 	struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
 	struct iwl_rxq *rxq = &trans_pcie->rxq;
-	u32 r, i, j;
+	u32 r, i;
+	u8 fill_rx = 0;
+	u32 count = 8;
+	int total_empty;
 
 restart:
 	spin_lock(&rxq->lock);
···
 	if (i == r)
 		IWL_DEBUG_RX(trans, "HW = SW = %d\n", r);
 
+	/* calculate total frames need to be restock after handling RX */
+	total_empty = r - rxq->write_actual;
+	if (total_empty < 0)
+		total_empty += RX_QUEUE_SIZE;
+
+	if (total_empty > (RX_QUEUE_SIZE / 2))
+		fill_rx = 1;
+
 	while (i != r) {
 		struct iwl_rx_mem_buffer *rxb;
 
···
 		iwl_pcie_rx_handle_rb(trans, rxb);
 
 		i = (i + 1) & RX_QUEUE_MASK;
-
-		/* If we have RX_CLAIM_REQ_ALLOC released rx buffers -
-		 * try to claim the pre-allocated buffers from the allocator */
-		if (rxq->used_count >= RX_CLAIM_REQ_ALLOC) {
-			struct iwl_rb_allocator *rba = &trans_pcie->rba;
-			struct iwl_rx_mem_buffer *out[RX_CLAIM_REQ_ALLOC];
-
-			/* Add the remaining 6 empty RBDs for allocator use */
-			spin_lock(&rba->lock);
-			list_splice_tail_init(&rxq->rx_used, &rba->rbd_empty);
-			spin_unlock(&rba->lock);
-
-			/* If not ready - continue, will try to reclaim later.
-			* No need to reschedule work - allocator exits only on
-			* success */
-			if (!iwl_pcie_rx_allocator_get(trans, out)) {
-				/* If success - then RX_CLAIM_REQ_ALLOC
-				 * buffers were retrieved and should be added
-				 * to free list */
-				rxq->used_count -= RX_CLAIM_REQ_ALLOC;
-				for (j = 0; j < RX_CLAIM_REQ_ALLOC; j++) {
-					list_add_tail(&out[j]->list,
-						      &rxq->rx_free);
-					rxq->free_count++;
-				}
+		/* If there are a lot of unused frames,
+		 * restock the Rx queue so ucode wont assert. */
+		if (fill_rx) {
+			count++;
+			if (count >= 8) {
+				rxq->read = i;
+				spin_unlock(&rxq->lock);
+				iwl_pcie_rx_replenish(trans, GFP_ATOMIC);
+				count = 0;
+				goto restart;
 			}
-		}
-		/* handle restock for two cases:
-		* - we just pulled buffers from the allocator
-		* - we have 8+ unstolen pages accumulated */
-		if (rxq->free_count >=  RX_CLAIM_REQ_ALLOC) {
-			rxq->read = i;
-			spin_unlock(&rxq->lock);
-			iwl_pcie_rxq_restock(trans);
-			goto restart;
 		}
 	}
 
 	/* Backtrack one entry */
 	rxq->read = i;
 	spin_unlock(&rxq->lock);
+
+	if (fill_rx)
+		iwl_pcie_rx_replenish(trans, GFP_ATOMIC);
+	else
+		iwl_pcie_rxq_restock(trans);
 
 	if (trans_pcie->napi.poll)
 		napi_gro_flush(&trans_pcie->napi, false);

drivers/net/wireless/iwlwifi/pcie/trans.c

···
 
 static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux)
 {
-	if (!trans->cfg->apmg_not_supported)
+	if (trans->cfg->apmg_not_supported)
 		return;
 
 	if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold))
···
 	struct iwl_trans_pcie *trans_pcie;
 	struct iwl_trans *trans;
 	u16 pci_cmd;
-	int err;
+	int ret;
 
 	trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie),
 				&pdev->dev, cfg, &trans_ops_pcie, 0);
···
 	spin_lock_init(&trans_pcie->ref_lock);
 	init_waitqueue_head(&trans_pcie->ucode_write_waitq);
 
-	err = pci_enable_device(pdev);
-	if (err)
+	ret = pci_enable_device(pdev);
+	if (ret)
 		goto out_no_pci;
 
 	if (!cfg->base_params->pcie_l1_allowed) {
···
 
 	pci_set_master(pdev);
 
-	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
-	if (!err)
-		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
-	if (err) {
-		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (!err)
-			err = pci_set_consistent_dma_mask(pdev,
+	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
+	if (!ret)
+		ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
+	if (ret) {
+		ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (!ret)
+			ret = pci_set_consistent_dma_mask(pdev,
 							  DMA_BIT_MASK(32));
 		/* both attempts failed: */
-		if (err) {
+		if (ret) {
 			dev_err(&pdev->dev, "No suitable DMA available\n");
 			goto out_pci_disable_device;
 		}
 	}
 
-	err = pci_request_regions(pdev, DRV_NAME);
-	if (err) {
+	ret = pci_request_regions(pdev, DRV_NAME);
+	if (ret) {
 		dev_err(&pdev->dev, "pci_request_regions failed\n");
 		goto out_pci_disable_device;
 	}
···
 	trans_pcie->hw_base = pci_ioremap_bar(pdev, 0);
 	if (!trans_pcie->hw_base) {
 		dev_err(&pdev->dev, "pci_ioremap_bar failed\n");
-		err = -ENODEV;
+		ret = -ENODEV;
 		goto out_pci_release_regions;
 	}
 
···
 	trans_pcie->pci_dev = pdev;
 	iwl_disable_interrupts(trans);
 
-	err = pci_enable_msi(pdev);
-	if (err) {
-		dev_err(&pdev->dev, "pci_enable_msi failed(0X%x)\n", err);
+	ret = pci_enable_msi(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "pci_enable_msi failed(0X%x)\n", ret);
 		/* enable rfkill interrupt: hw bug w/a */
 		pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
 		if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
···
 	 */
 	if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
 		unsigned long flags;
-		int ret;
 
 		trans->hw_rev = (trans->hw_rev & 0xfff0) |
 				(CSR_HW_REV_STEP(trans->hw_rev << 2) << 2);
+
+		ret = iwl_pcie_prepare_card_hw(trans);
+		if (ret) {
+			IWL_WARN(trans, "Exit HW not ready\n");
+			goto out_pci_disable_msi;
+		}
 
 		/*
 		 * in-order to recognize C step driver should read chip version
···
 	/* Initialize the wait queue for commands */
 	init_waitqueue_head(&trans_pcie->wait_command_queue);
 
-	if (iwl_pcie_alloc_ict(trans))
+	ret = iwl_pcie_alloc_ict(trans);
+	if (ret)
 		goto out_pci_disable_msi;
 
-	err = request_threaded_irq(pdev->irq, iwl_pcie_isr,
+	ret = request_threaded_irq(pdev->irq, iwl_pcie_isr,
 				   iwl_pcie_irq_handler,
 				   IRQF_SHARED, DRV_NAME, trans);
-	if (err) {
+	if (ret) {
 		IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq);
 		goto out_free_ict;
 	}
···
 	pci_disable_device(pdev);
 out_no_pci:
 	iwl_trans_free(trans);
-	return ERR_PTR(err);
+	return ERR_PTR(ret);
 }

drivers/net/xen-netback/netback.c

···
 		smp_rmb();
 
 		while (dc != dp) {
-			BUG_ON(gop - queue->tx_unmap_ops > MAX_PENDING_REQS);
+			BUG_ON(gop - queue->tx_unmap_ops >= MAX_PENDING_REQS);
 			pending_idx =
 				queue->dealloc_ring[pending_index(dc++)];
 
-			pending_idx_release[gop-queue->tx_unmap_ops] =
+			pending_idx_release[gop - queue->tx_unmap_ops] =
 				pending_idx;
-			queue->pages_to_unmap[gop-queue->tx_unmap_ops] =
+			queue->pages_to_unmap[gop - queue->tx_unmap_ops] =
 				queue->mmap_pages[pending_idx];
 			gnttab_set_unmap_op(gop,
 					    idx_to_kaddr(queue, pending_idx),

include/net/cfg80211.h

···
 			     struct cfg80211_chan_def *chandef,
 			     enum nl80211_iftype iftype);
 
+/**
+ * cfg80211_reg_can_beacon_relax - check if beaconing is allowed with relaxation
+ * @wiphy: the wiphy
+ * @chandef: the channel definition
+ * @iftype: interface type
+ *
+ * Return: %true if there is no secondary channel or the secondary channel(s)
+ * can be used for beaconing (i.e. is not a radar channel etc.). This version
+ * also checks if IR-relaxation conditions apply, to allow beaconing under
+ * more permissive conditions.
+ *
+ * Requires the RTNL to be held.
+ */
+bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
+				   struct cfg80211_chan_def *chandef,
+				   enum nl80211_iftype iftype);
+
 /*
  * cfg80211_ch_switch_notify - update wdev channel and notify userspace
  * @dev: the device which switched channels

include/net/ip.h

···
 }
 
 /* datagram.c */
+int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
 int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
 
 void ip4_datagram_release_cb(struct sock *sk);

net/ax25/ax25_subr.c

···
 {
 	ax25_clear_queues(ax25);
 
+	ax25_stop_heartbeat(ax25);
 	ax25_stop_t1timer(ax25);
 	ax25_stop_t2timer(ax25);
 	ax25_stop_t3timer(ax25);

net/bridge/br_mdb.c

···
 	if (state == MDB_TEMPORARY)
 		mod_timer(&p->timer, now + br->multicast_membership_interval);
 
-	br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
 	return 0;
 }
 

net/bridge/br_multicast.c

···
 				       struct bridge_mcast_own_query *query);
 static void br_multicast_add_router(struct net_bridge *br,
 				    struct net_bridge_port *port);
+static void br_ip4_multicast_leave_group(struct net_bridge *br,
+					 struct net_bridge_port *port,
+					 __be32 group,
+					 __u16 vid);
+#if IS_ENABLED(CONFIG_IPV6)
+static void br_ip6_multicast_leave_group(struct net_bridge *br,
+					 struct net_bridge_port *port,
+					 const struct in6_addr *group,
+					 __u16 vid);
+#endif
 unsigned int br_mdb_rehash_seq;
 
 static inline int br_ip_equal(const struct br_ip *a, const struct br_ip *b)
···
 			continue;
 		}
 
-		err = br_ip4_multicast_add_group(br, port, group, vid);
-		if (err)
-			break;
+		if ((type == IGMPV3_CHANGE_TO_INCLUDE ||
+		     type == IGMPV3_MODE_IS_INCLUDE) &&
+		    ntohs(grec->grec_nsrcs) == 0) {
+			br_ip4_multicast_leave_group(br, port, group, vid);
+		} else {
+			err = br_ip4_multicast_add_group(br, port, group, vid);
+			if (err)
+				break;
+		}
 	}
 
 	return err;
···
 			continue;
 		}
 
-		err = br_ip6_multicast_add_group(br, port, &grec->grec_mca,
-						 vid);
-		if (err)
-			break;
+		if ((grec->grec_type == MLD2_CHANGE_TO_INCLUDE ||
+		     grec->grec_type == MLD2_MODE_IS_INCLUDE) &&
+		    ntohs(*nsrcs) == 0) {
+			br_ip6_multicast_leave_group(br, port, &grec->grec_mca,
+						     vid);
+		} else {
+			err = br_ip6_multicast_add_group(br, port,
+							 &grec->grec_mca, vid);
+			if (!err)
+				break;
+		}
 	}
 
 	return err;

net/caif/caif_socket.c

···
  * Copied from sock.c:sock_queue_rcv_skb(), but changed so packets are
  * not dropped, but CAIF is sending flow off instead.
  */
-static int caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
+static void caif_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
 	int err;
 	unsigned long flags;
 	struct sk_buff_head *list = &sk->sk_receive_queue;
 	struct caifsock *cf_sk = container_of(sk, struct caifsock, sk);
+	bool queued = false;
 
 	if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
 		(unsigned int)sk->sk_rcvbuf && rx_flow_is_on(cf_sk)) {
···
 
 	err = sk_filter(sk, skb);
 	if (err)
-		return err;
+		goto out;
+
 	if (!sk_rmem_schedule(sk, skb, skb->truesize) && rx_flow_is_on(cf_sk)) {
 		set_rx_flow_off(cf_sk);
 		net_dbg_ratelimited("sending flow OFF due to rmem_schedule\n");
···
 	}
 	skb->dev = NULL;
 	skb_set_owner_r(skb, sk);
-	/* Cache the SKB length before we tack it onto the receive
-	 * queue. Once it is added it no longer belongs to us and
-	 * may be freed by other threads of control pulling packets
-	 * from the queue.
-	 */
 	spin_lock_irqsave(&list->lock, flags);
-	if (!sock_flag(sk, SOCK_DEAD))
+	queued = !sock_flag(sk, SOCK_DEAD);
+	if (queued)
 		__skb_queue_tail(list, skb);
 	spin_unlock_irqrestore(&list->lock, flags);
-
-	if (!sock_flag(sk, SOCK_DEAD))
+out:
+	if (queued)
 		sk->sk_data_ready(sk);
 	else
 		kfree_skb(skb);
-	return 0;
 }
 
 /* Packet Receive Callback function called from CAIF Stack */

net/core/datagram.c

···
 	goto out;
 }
 
+static int skb_set_peeked(struct sk_buff *skb)
+{
+	struct sk_buff *nskb;
+
+	if (skb->peeked)
+		return 0;
+
+	/* We have to unshare an skb before modifying it. */
+	if (!skb_shared(skb))
+		goto done;
+
+	nskb = skb_clone(skb, GFP_ATOMIC);
+	if (!nskb)
+		return -ENOMEM;
+
+	skb->prev->next = nskb;
+	skb->next->prev = nskb;
+	nskb->prev = skb->prev;
+	nskb->next = skb->next;
+
+	consume_skb(skb);
+	skb = nskb;
+
+done:
+	skb->peeked = 1;
+
+	return 0;
+}
+
 /**
  *	__skb_recv_datagram - Receive a datagram skbuff
  *	@sk: socket
···
 struct sk_buff *__skb_recv_datagram(struct sock *sk, unsigned int flags,
 				    int *peeked, int *off, int *err)
 {
+	struct sk_buff_head *queue = &sk->sk_receive_queue;
 	struct sk_buff *skb, *last;
+	unsigned long cpu_flags;
 	long timeo;
 	/*
 	 * Caller is allowed not to check sk->sk_err before skb_recv_datagram()
···
 		 * Look at current nfs client by the way...
 		 * However, this function was correct in any case. 8)
 		 */
-		unsigned long cpu_flags;
-		struct sk_buff_head *queue = &sk->sk_receive_queue;
 		int _off = *off;
 
 		last = (struct sk_buff *)queue;
···
 					_off -= skb->len;
 					continue;
 				}
-				skb->peeked = 1;
+
+				error = skb_set_peeked(skb);
+				if (error)
+					goto unlock_err;
+
 				atomic_inc(&skb->users);
 			} else
 				__skb_unlink(skb, queue);
···
 
 	return NULL;
 
+unlock_err:
+	spin_unlock_irqrestore(&queue->lock, cpu_flags);
 no_packet:
 	*err = error;
 	return NULL;
···
 		    !skb->csum_complete_sw)
 			netdev_rx_csum_fault(skb->dev);
 	}
-	skb->csum_valid = !sum;
+	if (!skb_shared(skb))
+		skb->csum_valid = !sum;
 	return sum;
 }
 EXPORT_SYMBOL(__skb_checksum_complete_head);
···
 			netdev_rx_csum_fault(skb->dev);
 	}
 
-	/* Save full packet checksum */
-	skb->csum = csum;
-	skb->ip_summed = CHECKSUM_COMPLETE;
-	skb->csum_complete_sw = 1;
-	skb->csum_valid = !sum;
+	if (!skb_shared(skb)) {
+		/* Save full packet checksum */
+		skb->csum = csum;
+		skb->ip_summed = CHECKSUM_COMPLETE;
+		skb->csum_complete_sw = 1;
+		skb->csum_valid = !sum;
+	}
 
 	return sum;
 }

net/core/dst.c

···
 		int newrefcnt;
 
 		newrefcnt = atomic_dec_return(&dst->__refcnt);
-		WARN_ON(newrefcnt < 0);
+		if (unlikely(newrefcnt < 0))
+			net_warn_ratelimited("%s: dst:%p refcnt:%d\n",
+					     __func__, dst, newrefcnt);
 		if (unlikely(dst->flags & DST_NOCACHE) && !newrefcnt)
 			call_rcu(&dst->rcu_head, dst_destroy_rcu);
 	}

net/core/rtnetlink.c

···
 			goto errout;
 
 		nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) {
-			if (nla_type(attr) != IFLA_VF_PORT)
-				continue;
-			err = nla_parse_nested(port, IFLA_PORT_MAX,
-				attr, ifla_port_policy);
+			if (nla_type(attr) != IFLA_VF_PORT ||
+			    nla_len(attr) < NLA_HDRLEN) {
+				err = -EINVAL;
+				goto errout;
+			}
+			err = nla_parse_nested(port, IFLA_PORT_MAX, attr,
+					       ifla_port_policy);
 			if (err < 0)
 				goto errout;
 			if (!port[IFLA_PORT_VF]) {

net/ipv4/datagram.c

···
 #include <net/route.h>
 #include <net/tcp_states.h>
 
-int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	struct sockaddr_in *usin = (struct sockaddr_in *) uaddr;
···
 		return -EAFNOSUPPORT;
 
 	sk_dst_reset(sk);
-
-	lock_sock(sk);
 
 	oif = sk->sk_bound_dev_if;
 	saddr = inet->inet_saddr;
···
 	sk_dst_set(sk, &rt->dst);
 	err = 0;
 out:
-	release_sock(sk);
 	return err;
+}
+EXPORT_SYMBOL(__ip4_datagram_connect);
+
+int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+{
+	int res;
+
+	lock_sock(sk);
+	res = __ip4_datagram_connect(sk, uaddr, addr_len);
+	release_sock(sk);
+	return res;
 }
 EXPORT_SYMBOL(ip4_datagram_connect);
 

net/ipv4/inet_hashtables.c

···
 
 int inet_ehash_locks_alloc(struct inet_hashinfo *hashinfo)
 {
+	unsigned int locksz = sizeof(spinlock_t);
 	unsigned int i, nblocks = 1;
 
-	if (sizeof(spinlock_t) != 0) {
+	if (locksz != 0) {
 		/* allocate 2 cache lines or at least one spinlock per cpu */
-		nblocks = max_t(unsigned int,
-				2 * L1_CACHE_BYTES / sizeof(spinlock_t),
-				1);
+		nblocks = max(2U * L1_CACHE_BYTES / locksz, 1U);
 		nblocks = roundup_pow_of_two(nblocks * num_possible_cpus());
 
 		/* no more locks than number of hash buckets */
 		nblocks = min(nblocks, hashinfo->ehash_mask + 1);
 
-		hashinfo->ehash_locks =	kmalloc_array(nblocks, sizeof(spinlock_t),
+		hashinfo->ehash_locks =	kmalloc_array(nblocks, locksz,
 						      GFP_KERNEL | __GFP_NOWARN);
 		if (!hashinfo->ehash_locks)
-			hashinfo->ehash_locks = vmalloc(nblocks * sizeof(spinlock_t));
+			hashinfo->ehash_locks = vmalloc(nblocks * locksz);
 
 		if (!hashinfo->ehash_locks)
 			return -ENOMEM;

net/ipv4/ip_fragment.c

···
 	ihl = ip_hdrlen(skb);
 
 	/* Determine the position of this fragment. */
-	end = offset + skb->len - ihl;
+	end = offset + skb->len - skb_network_offset(skb) - ihl;
 	err = -EINVAL;
 
 	/* Is this the final fragment? */
···
 		goto err;
 
 	err = -ENOMEM;
-	if (!pskb_pull(skb, ihl))
+	if (!pskb_pull(skb, skb_network_offset(skb) + ihl))
 		goto err;
 
 	err = pskb_trim_rcsum(skb, end - offset);
···
 	} else {
 		iph->frag_off = 0;
 	}
+
+	ip_send_check(iph);
 
 	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS);
 	qp->q.fragments = NULL;

net/ipv4/tcp_input.c

···
 	const struct inet_connection_sock *icsk = inet_csk(sk);
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct sk_buff *skb;
-	bool new_recovery = false;
+	bool new_recovery = icsk->icsk_ca_state < TCP_CA_Recovery;
 	bool is_reneg;			/* is receiver reneging on SACKs? */
 
 	/* Reduce ssthresh if it has not yet been made inside this window. */
 	if (icsk->icsk_ca_state <= TCP_CA_Disorder ||
 	    !after(tp->high_seq, tp->snd_una) ||
 	    (icsk->icsk_ca_state == TCP_CA_Loss && !icsk->icsk_retransmits)) {
-		new_recovery = true;
 		tp->prior_ssthresh = tcp_current_ssthresh(sk);
 		tp->snd_ssthresh = icsk->icsk_ca_ops->ssthresh(sk);
 		tcp_ca_event(sk, CA_EVENT_LOSS);

net/ipv6/datagram.c

···
 	return ipv6_addr_v4mapped(a) && (a->s6_addr32[3] == 0);
 }
 
-int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
 	struct sockaddr_in6	*usin = (struct sockaddr_in6 *) uaddr;
 	struct inet_sock	*inet = inet_sk(sk);
···
 	if (usin->sin6_family == AF_INET) {
 		if (__ipv6_only_sock(sk))
 			return -EAFNOSUPPORT;
-		err = ip4_datagram_connect(sk, uaddr, addr_len);
+		err = __ip4_datagram_connect(sk, uaddr, addr_len);
 		goto ipv4_connected;
 	}
 
···
 		sin.sin_addr.s_addr = daddr->s6_addr32[3];
 		sin.sin_port = usin->sin6_port;
 
-		err = ip4_datagram_connect(sk,
-					   (struct sockaddr *) &sin,
-					   sizeof(sin));
+		err = __ip4_datagram_connect(sk,
+					     (struct sockaddr *) &sin,
+					     sizeof(sin));
 
 ipv4_connected:
 		if (err)
···
 out:
 	fl6_sock_release(flowlabel);
 	return err;
+}
+
+int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+{
+	int res;
+
+	lock_sock(sk);
+	res = __ip6_datagram_connect(sk, uaddr, addr_len);
+	release_sock(sk);
+	return res;
 }
 EXPORT_SYMBOL_GPL(ip6_datagram_connect);
 

net/ipv6/ip6_offload.c

···
 static const struct net_offload sit_offload = {
 	.callbacks = {
 		.gso_segment	= ipv6_gso_segment,
-		.gro_receive	= ipv6_gro_receive,
-		.gro_complete	= ipv6_gro_complete,
 	},
 };
 

net/mac80211/debugfs_netdev.c

···
 
 	debugfs_remove_recursive(sdata->vif.debugfs_dir);
 	sdata->vif.debugfs_dir = NULL;
+	sdata->debugfs.subdir_stations = NULL;
 }
 
 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)

net/mac80211/iface.c

···
 	ieee80211_teardown_sdata(sdata);
 }
 
-/*
- * Remove all interfaces, may only be called at hardware unregistration
- * time because it doesn't do RCU-safe list removals.
- */
 void ieee80211_remove_interfaces(struct ieee80211_local *local)
 {
 	struct ieee80211_sub_if_data *sdata, *tmp;
···
 
 	ASSERT_RTNL();
 
-	/*
-	 * Close all AP_VLAN interfaces first, as otherwise they
-	 * might be closed while the AP interface they belong to
-	 * is closed, causing unregister_netdevice_many() to crash.
+	/* Before destroying the interfaces, make sure they're all stopped so
+	 * that the hardware is stopped. Otherwise, the driver might still be
+	 * iterating the interfaces during the shutdown, e.g. from a worker
+	 * or from RX processing or similar, and if it does so (using atomic
+	 * iteration) while we're manipulating the list, the iteration will
+	 * crash.
+	 *
+	 * After this, the hardware should be stopped and the driver should
+	 * have stopped all of its activities, so that we can do RCU-unaware
+	 * manipulations of the interface list below.
 	 */
-	list_for_each_entry(sdata, &local->interfaces, list)
-		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
-			dev_close(sdata->dev);
+	cfg80211_shutdown_all_interfaces(local->hw.wiphy);
+
+	WARN(local->open_count, "%s: open count remains %d\n",
+	     wiphy_name(local->hw.wiphy), local->open_count);
 
 	mutex_lock(&local->iflist_mtx);
 	list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {

net/mac80211/mesh_plink.c

···
 		if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
 			/* AID */
 			pos = skb_put(skb, 2);
-			put_unaligned_le16(plid, pos + 2);
+			put_unaligned_le16(plid, pos);
 		}
 		if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
 		    ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
···
 						WLAN_SP_MESH_PEERING_CONFIRM) {
 		baseaddr += 4;
 		baselen += 4;
+
+		if (baselen > len)
+			return;
 	}
 	ieee802_11_parse_elems(baseaddr, len - baselen, true, &elems);
 	mesh_process_plink_frame(sdata, mgmt, &elems);

net/mac80211/pm.c

···
 			if (sdata->vif.type != NL80211_IFTYPE_STATION)
 				continue;
 			ieee80211_mgd_quiesce(sdata);
+			/* If suspended during TX in progress, and wowlan
+			 * is enabled (connection will be active) there
+			 * can be a race where the driver is put out
+			 * of power-save due to TX and during suspend
+			 * dynamic_ps_timer is cancelled and TX packet
+			 * is flushed, leaving the driver in ACTIVE even
+			 * after resuming until dynamic_ps_timer puts
+			 * driver back in DOZE.
+			 */
+			if (sdata->u.mgd.associated &&
+			    sdata->u.mgd.powersave &&
+			     !(local->hw.conf.flags & IEEE80211_CONF_PS)) {
+				local->hw.conf.flags |= IEEE80211_CONF_PS;
+				ieee80211_hw_config(local,
+						    IEEE80211_CONF_CHANGE_PS);
+			}
 		}
 
 		err = drv_suspend(local, wowlan);

net/mac80211/tdls.c

···
 	struct ieee80211_channel *ch;
 	struct cfg80211_chan_def chandef;
 	int i, subband_start;
+	struct wiphy *wiphy = sdata->local->hw.wiphy;
 
 	for (i = start; i <= end; i += spacing) {
 		if (!ch_cnt)
···
 			/* we will be active on the channel */
 			cfg80211_chandef_create(&chandef, ch,
 						NL80211_CHAN_NO_HT);
-			if (cfg80211_reg_can_beacon(sdata->local->hw.wiphy,
-						    &chandef,
-						    sdata->wdev.iftype)) {
+			if (cfg80211_reg_can_beacon_relax(wiphy, &chandef,
+							  sdata->wdev.iftype)) {
 				ch_cnt++;
 				/*
 				 * check if the next channel is also part of

net/mac80211/tx.c

···
 			queued = true;
 			info->control.vif = &tx->sdata->vif;
 			info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
-			info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
+			info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS |
+					IEEE80211_TX_CTL_NO_PS_BUFFER |
+					IEEE80211_TX_STATUS_EOSP;
 			__skb_queue_tail(&tid_tx->pending, skb);
 			if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER)
 				purge_skb = __skb_dequeue(&tid_tx->pending);

net/netlink/af_netlink.c

···
 	return NULL;
 }
 
+
+static void
+__netlink_set_ring(struct sock *sk, struct nl_mmap_req *req, bool tx_ring, void **pg_vec,
+		   unsigned int order)
+{
+	struct netlink_sock *nlk = nlk_sk(sk);
+	struct sk_buff_head *queue;
+	struct netlink_ring *ring;
+
+	queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue;
+	ring  = tx_ring ? &nlk->tx_ring : &nlk->rx_ring;
+
+	spin_lock_bh(&queue->lock);
+
+	ring->frame_max		= req->nm_frame_nr - 1;
+	ring->head		= 0;
+	ring->frame_size	= req->nm_frame_size;
+	ring->pg_vec_pages	= req->nm_block_size / PAGE_SIZE;
+
+	swap(ring->pg_vec_len, req->nm_block_nr);
+	swap(ring->pg_vec_order, order);
+	swap(ring->pg_vec, pg_vec);
+
+	__skb_queue_purge(queue);
+	spin_unlock_bh(&queue->lock);
+
+	WARN_ON(atomic_read(&nlk->mapped));
+
+	if (pg_vec)
+		free_pg_vec(pg_vec, order, req->nm_block_nr);
+}
+
 static int netlink_set_ring(struct sock *sk, struct nl_mmap_req *req,
-			    bool closing, bool tx_ring)
+			    bool tx_ring)
 {
 	struct netlink_sock *nlk = nlk_sk(sk);
 	struct netlink_ring *ring;
-	struct sk_buff_head *queue;
 	void **pg_vec = NULL;
 	unsigned int order = 0;
-	int err;
 
 	ring  = tx_ring ? &nlk->tx_ring : &nlk->rx_ring;
-	queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue;
 
-	if (!closing) {
-		if (atomic_read(&nlk->mapped))
-			return -EBUSY;
-		if (atomic_read(&ring->pending))
-			return -EBUSY;
-	}
+	if (atomic_read(&nlk->mapped))
+		return -EBUSY;
+	if (atomic_read(&ring->pending))
+		return -EBUSY;
 
 	if (req->nm_block_nr) {
 		if (ring->pg_vec != NULL)
···
 			return -EINVAL;
 	}
 
-	err = -EBUSY;
 	mutex_lock(&nlk->pg_vec_lock);
-	if (closing || atomic_read(&nlk->mapped) == 0) {
-		err = 0;
-		spin_lock_bh(&queue->lock);
-
-		ring->frame_max		= req->nm_frame_nr - 1;
-		ring->head		= 0;
-		ring->frame_size	= req->nm_frame_size;
-		ring->pg_vec_pages	= req->nm_block_size / PAGE_SIZE;
-
-		swap(ring->pg_vec_len, req->nm_block_nr);
-		swap(ring->pg_vec_order, order);
-		swap(ring->pg_vec, pg_vec);
-
-		__skb_queue_purge(queue);
-		spin_unlock_bh(&queue->lock);
-
-		WARN_ON(atomic_read(&nlk->mapped));
+	if (atomic_read(&nlk->mapped) == 0) {
+		__netlink_set_ring(sk, req, tx_ring, pg_vec, order);
+		mutex_unlock(&nlk->pg_vec_lock);
+		return 0;
 	}
+
 	mutex_unlock(&nlk->pg_vec_lock);
 
 	if (pg_vec)
 		free_pg_vec(pg_vec, order, req->nm_block_nr);
-	return err;
+
+	return -EBUSY;
 }
 
 static void netlink_mm_open(struct vm_area_struct *vma)
···
 
 		memset(&req, 0, sizeof(req));
 		if (nlk->rx_ring.pg_vec)
-			netlink_set_ring(sk, &req, true, false);
+			__netlink_set_ring(sk, &req, false, NULL, 0);
 		memset(&req, 0, sizeof(req));
 		if (nlk->tx_ring.pg_vec)
-			netlink_set_ring(sk, &req, true, true);
+			__netlink_set_ring(sk, &req, true, NULL, 0);
 	}
 #endif /* CONFIG_NETLINK_MMAP */
 
···
 			return -EINVAL;
 		if (copy_from_user(&req, optval, sizeof(req)))
 			return -EFAULT;
-		err = netlink_set_ring(sk, &req, false,
+		err = netlink_set_ring(sk, &req,
 				       optname == NETLINK_TX_RING);
 		break;
 	}

net/openvswitch/flow_table.c

···
 	BUILD_BUG_ON(sizeof(struct sw_flow_key) % sizeof(long));
 
 	flow_cache = kmem_cache_create("sw_flow", sizeof(struct sw_flow)
-				       + (num_possible_nodes()
+				       + (nr_node_ids
 					  * sizeof(struct flow_stats *)),
 				       0, 0, NULL);
 	if (flow_cache == NULL)

net/sched/act_bpf.c

···
 		bpf_prog_put(prog->filter);
 	else
 		bpf_prog_destroy(prog->filter);
+
+	kfree(prog->bpf_ops);
+	kfree(prog->bpf_name);
 }
 
 static struct tc_action_ops act_bpf_ops __read_mostly = {

net/sched/cls_bpf.c

···
 		goto errout;
 
 	if (oldprog) {
-		list_replace_rcu(&prog->link, &oldprog->link);
+		list_replace_rcu(&oldprog->link, &prog->link);
 		tcf_unbind_filter(tp, &oldprog->res);
 		call_rcu(&oldprog->rcu, __cls_bpf_delete_prog);
 	} else {

net/sched/cls_flow.c

···
 	if (!fnew)
 		goto err2;
 
+	tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
+
 	fold = (struct flow_filter *)*arg;
 	if (fold) {
 		err = -EINVAL;
···
 		fnew->mask  = ~0U;
 		fnew->tp = tp;
 		get_random_bytes(&fnew->hashrnd, 4);
-		tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
 	}
 
 	fnew->perturb_timer.function = flow_perturbation;
···
 	if (*arg == 0)
 		list_add_tail_rcu(&fnew->list, &head->filters);
 	else
-		list_replace_rcu(&fnew->list, &fold->list);
+		list_replace_rcu(&fold->list, &fnew->list);
 
 	*arg = (unsigned long)fnew;
 

net/sched/cls_flower.c

···
 	*arg = (unsigned long) fnew;
 
 	if (fold) {
-		list_replace_rcu(&fnew->list, &fold->list);
+		list_replace_rcu(&fold->list, &fnew->list);
 		tcf_unbind_filter(tp, &fold->res);
 		call_rcu(&fold->rcu, fl_destroy_filter);
 	} else {

net/sched/sch_fq_codel.c

···
 	skb = dequeue_head(flow);
 	len = qdisc_pkt_len(skb);
 	q->backlogs[idx] -= len;
-	kfree_skb(skb);
 	sch->q.qlen--;
 	qdisc_qstats_drop(sch);
 	qdisc_qstats_backlog_dec(sch, skb);
+	kfree_skb(skb);
 	flow->dropped++;
 	return idx;
+}
+
+static unsigned int fq_codel_qdisc_drop(struct Qdisc *sch)
+{
+	unsigned int prev_backlog;
+
+	prev_backlog = sch->qstats.backlog;
+	fq_codel_drop(sch);
+	return prev_backlog - sch->qstats.backlog;
 }
 
 static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
···
 	.enqueue	=	fq_codel_enqueue,
 	.dequeue	=	fq_codel_dequeue,
 	.peek		=	qdisc_peek_dequeued,
-	.drop		=	fq_codel_drop,
+	.drop		=	fq_codel_qdisc_drop,
 	.init		=	fq_codel_init,
 	.reset		=	fq_codel_reset,
 	.destroy	=	fq_codel_destroy,

net/sched/sch_sfq.c

···
 		len = qdisc_pkt_len(skb);
 		slot->backlog -= len;
 		sfq_dec(q, x);
-		kfree_skb(skb);
 		sch->q.qlen--;
 		qdisc_qstats_drop(sch);
 		qdisc_qstats_backlog_dec(sch, skb);
+		kfree_skb(skb);
 		return len;
 	}
 

net/wireless/chan.c

···
 	return false;
 }
 
-bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
-			     struct cfg80211_chan_def *chandef,
-			     enum nl80211_iftype iftype)
+static bool _cfg80211_reg_can_beacon(struct wiphy *wiphy,
+				     struct cfg80211_chan_def *chandef,
+				     enum nl80211_iftype iftype,
+				     bool check_no_ir)
 {
 	bool res;
 	u32 prohibited_flags = IEEE80211_CHAN_DISABLED |
 			       IEEE80211_CHAN_RADAR;
 
-	trace_cfg80211_reg_can_beacon(wiphy, chandef, iftype);
+	trace_cfg80211_reg_can_beacon(wiphy, chandef, iftype, check_no_ir);
 
-	/*
-	 * Under certain conditions suggested by some regulatory bodies a
-	 * GO/STA can IR on channels marked with IEEE80211_NO_IR. Set this flag
-	 * only if such relaxations are not enabled and the conditions are not
-	 * met.
-	 */
-	if (!cfg80211_ir_permissive_chan(wiphy, iftype, chandef->chan))
+	if (check_no_ir)
 		prohibited_flags |= IEEE80211_CHAN_NO_IR;
 
 	if (cfg80211_chandef_dfs_required(wiphy, chandef, iftype) > 0 &&
···
 	trace_cfg80211_return_bool(res);
 	return res;
 }
+
+bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
+			     struct cfg80211_chan_def *chandef,
+			     enum nl80211_iftype iftype)
+{
+	return _cfg80211_reg_can_beacon(wiphy, chandef, iftype, true);
+}
 EXPORT_SYMBOL(cfg80211_reg_can_beacon);
+
+bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
+				   struct cfg80211_chan_def *chandef,
+				   enum nl80211_iftype iftype)
+{
+	bool check_no_ir;
+
+	ASSERT_RTNL();
+
+	/*
+	 * Under certain conditions suggested by some regulatory bodies a
+	 * GO/STA can IR on channels marked with IEEE80211_NO_IR. Set this flag
+	 * only if such relaxations are not enabled and the conditions are not
+	 * met.
+	 */
+	check_no_ir = !cfg80211_ir_permissive_chan(wiphy, iftype,
+						   chandef->chan);
+
+	return _cfg80211_reg_can_beacon(wiphy, chandef, iftype, check_no_ir);
+}
+EXPORT_SYMBOL(cfg80211_reg_can_beacon_relax);
 
 int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
 				 struct cfg80211_chan_def *chandef)

net/wireless/nl80211.c

···
 	switch (iftype) {
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_P2P_GO:
-		if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
+		if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
+						   iftype)) {
 			result = -EINVAL;
 			break;
 		}
···
 	} else if (!nl80211_get_ap_channel(rdev, &params))
 		return -EINVAL;
 
-	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
-				     wdev->iftype))
+	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
+					   wdev->iftype))
 		return -EINVAL;
 
 	if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
···
 	if (err)
 		return err;
 
-	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
-				     wdev->iftype))
+	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
+					   wdev->iftype))
 		return -EINVAL;
 
 	err = cfg80211_chandef_dfs_required(wdev->wiphy,
···
 		return -EINVAL;
 
 	/* we will be active on the TDLS link */
-	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
+	if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
+					   wdev->iftype))
 		return -EINVAL;
 
 	/* don't allow switching to DFS channels */

net/wireless/reg.c

···
 	reg_regdb_query(alpha2);
 
 	if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) {
-		pr_info("Exceeded CRDA call max attempts. Not calling CRDA\n");
+		pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n");
 		return -EINVAL;
 	}
 
 	if (!is_world_regdom((char *) alpha2))
-		pr_info("Calling CRDA for country: %c%c\n",
+		pr_debug("Calling CRDA for country: %c%c\n",
 			alpha2[0], alpha2[1]);
 	else
-		pr_info("Calling CRDA to update world regulatory domain\n");
+		pr_debug("Calling CRDA to update world regulatory domain\n");
 
 	return kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, env);
 }
···
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_P2P_GO:
 	case NL80211_IFTYPE_ADHOC:
-		return cfg80211_reg_can_beacon(wiphy, &chandef, iftype);
+		return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype);
 	case NL80211_IFTYPE_STATION:
 	case NL80211_IFTYPE_P2P_CLIENT:
 		return cfg80211_chandef_usable(wiphy, &chandef,

net/wireless/trace.h

···
 
 TRACE_EVENT(cfg80211_reg_can_beacon,
 	TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef,
-		 enum nl80211_iftype iftype),
-	TP_ARGS(wiphy, chandef, iftype),
+		 enum nl80211_iftype iftype, bool check_no_ir),
+	TP_ARGS(wiphy, chandef, iftype, check_no_ir),
 	TP_STRUCT__entry(
 		WIPHY_ENTRY
 		CHAN_DEF_ENTRY
 		__field(enum nl80211_iftype, iftype)
+		__field(bool, check_no_ir)
 	),
 	TP_fast_assign(
 		WIPHY_ASSIGN;
 		CHAN_DEF_ASSIGN(chandef);
 		__entry->iftype = iftype;
+		__entry->check_no_ir = check_no_ir;
 	),
-	TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT ", iftype=%d",
-		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG, __entry->iftype)
+	TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT ", iftype=%d check_no_ir=%s",
+		  WIPHY_PR_ARG, CHAN_DEF_PR_ARG, __entry->iftype,
+		  BOOL_TO_STR(__entry->check_no_ir))
 );
 
 TRACE_EVENT(cfg80211_chandef_dfs_required,