net: use symbolic values for ndo_start_xmit() return codes

Convert magic values 1 and -1 to NETDEV_TX_BUSY and NETDEV_TX_LOCKED respectively.

0 (NETDEV_TX_OK) is not changed to keep the noise down, except in very few cases
where its in direct proximity to one of the other values.

Signed-off-by: Patrick McHardy <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/isdn/i4l/isdn_net.c

···
 	lp = isdn_net_get_locked_lp(nd);
 	if (!lp) {
 		printk(KERN_WARNING "%s: all channels busy - requeuing!\n", ndev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	/* we have our lp locked from now on */
 
···
 					spin_unlock_irqrestore(&dev->lock, flags);
 					isdn_net_dial();	/* Initiate dialing */
 					netif_stop_queue(ndev);
-					return 1;	/* let upper layer requeue skb packet */
+					return NETDEV_TX_BUSY;	/* let upper layer requeue skb packet */
 				}
 #endif
 				/* Initiate dialing */
 				spin_unlock_irqrestore(&dev->lock, flags);
 				isdn_net_dial();
 				isdn_net_device_stop_queue(lp);
-				return 1;
+				return NETDEV_TX_BUSY;
 			} else {
 				isdn_net_unreachable(ndev, skb,
 						     "No phone number");

drivers/message/fusion/mptlan.c

···
 
 		printk (KERN_ERR "%s: no tx context available: %u\n",
 			__func__, priv->mpt_txfidx_tail);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	mf = mpt_get_msg_frame(LanCtx, mpt_dev);
···
 
 		printk (KERN_ERR "%s: Unable to alloc request frame\n",
 			__func__);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--];

drivers/net/3c505.c

···
 			pr_debug("%s: failed to transmit packet\n", dev->name);
 		}
 		spin_unlock_irqrestore(&adapter->lock, flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	if (elp_debug >= 3)
 		pr_debug("%s: packet of length %d sent\n", dev->name, (int) skb->len);

drivers/net/3c515.c

···
 		int i;
 
 		if (vp->tx_full)	/* No room to transmit with */
-			return 1;
+			return NETDEV_TX_BUSY;
 		if (vp->cur_tx != 0)
 			prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE];
 		else

drivers/net/3c527.c

···
 	netif_stop_queue(dev);
 
 	if(atomic_read(&lp->tx_count)==0) {
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	if (skb_padto(skb, ETH_ZLEN)) {

drivers/net/3c59x.c

···
 			pr_warning("%s: BUG! Tx Ring full, refusing to send buffer.\n",
 				   dev->name);
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	vp->tx_skbuff[entry] = skb;

drivers/net/7990.c

···
 	unsigned long flags;
 
         if (!TX_BUFFS_AVAIL)
-                return -1;
+                return NETDEV_TX_LOCKED;
 
 	netif_stop_queue (dev);
 

drivers/net/8139cp.c

···
 		spin_unlock_irqrestore(&cp->lock, intr_flags);
 		pr_err(PFX "%s: BUG! Tx Ring full when queue awake!\n",
 		       dev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 #if CP_VLAN_TAG_USED

drivers/net/a2065.c

···
 
 	if (!TX_BUFFS_AVAIL){
 		local_irq_restore(flags);
-		return -1;
+		return NETDEV_TX_LOCKED;
 	}
 
 #ifdef DEBUG_DRIVER

drivers/net/arm/at91_ether.c

···
 		dev->trans_start = jiffies;
 	} else {
 		printk(KERN_ERR "at91_ether.c: at91ether_start_xmit() called, but device is busy!\n");
-		return 1;	/* if we return anything but zero, dev.c:1055 calls kfree_skb(skb)
+		return NETDEV_TX_BUSY;	/* if we return anything but zero, dev.c:1055 calls kfree_skb(skb)
 				on this skb, he also reports -ENETDOWN and printk's, so either
 				we free and return(0) or don't free and return 1 */
 	}

drivers/net/arm/ether3.c

···
 
 	if (priv(dev)->tx_tail == next_ptr) {
 		local_irq_restore(flags);
-		return 1;	/* unable to queue */
+		return NETDEV_TX_BUSY;	/* unable to queue */
 	}
 
 	dev->trans_start = jiffies;

drivers/net/au1000_eth.c

···
 		/* We've wrapped around and the transmitter is still busy */
 		netif_stop_queue(dev);
 		aup->tx_full = 1;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	else if (buff_stat & TX_T_DONE) {
 		update_tx_stats(dev, ptxd->status);

drivers/net/cassini.c

···
 	 *      individual queues.
 	 */
 	if (cas_xmit_tx_ringN(cp, ring++ & N_TX_RINGS_MASK, skb))
-		return 1;
+		return NETDEV_TX_BUSY;
 	dev->trans_start = jiffies;
 	return 0;
 }

drivers/net/cs89x0.c

···
 
 		spin_unlock_irq(&lp->lock);
 		if (net_debug) printk("cs89x0: Tx buffer not free!\n");
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	/* Write the contents of the packet */
 	writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);

drivers/net/de600.c

···
 	if (free_tx_pages <= 0) {	/* Do timeouts, to avoid hangs. */
 		tickssofar = jiffies - dev->trans_start;
 		if (tickssofar < 5)
-			return 1;
+			return NETDEV_TX_BUSY;
 		/* else */
 		printk(KERN_WARNING "%s: transmit timed out (%d), %s?\n", dev->name, tickssofar, "network cable problem");
 		/* Restart the adapter. */
 		spin_lock_irqsave(&de600_lock, flags);
 		if (adapter_init(dev)) {
 			spin_unlock_irqrestore(&de600_lock, flags);
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 		spin_unlock_irqrestore(&de600_lock, flags);
 	}
···
 		if (was_down || (de600_read_byte(READ_DATA, dev) != 0xde)) {
 			if (adapter_init(dev)) {
 				spin_unlock_irqrestore(&de600_lock, flags);
-				return 1;
+				return NETDEV_TX_BUSY;
 			}
 		}
 	}

drivers/net/de620.c

···
 	case (TXBF0 | TXBF1): /* NONE!!! */
 		printk(KERN_WARNING "%s: No tx-buffer available!\n", dev->name);
 		spin_unlock_irqrestore(&de620_lock, flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	de620_write_block(dev, buffer, skb->len, len-skb->len);
 

drivers/net/defxx.c

···
 	{
 		skb_pull(skb,3);
 		spin_unlock_irqrestore(&bp->lock, flags);
-		return(1);			/* requeue packet for later */
+		return NETDEV_TX_BUSY;	/* requeue packet for later */
 	}
 
 	/*

drivers/net/depca.c

···
 		if (TX_BUFFS_AVAIL)
 			netif_start_queue(dev);
 	} else
-		status = -1;
+		status = NETDEV_TX_LOCKED;
 
       out:
 	return status;
···
 
 		lp->tx_new = (++end) & lp->txRingMask;	/* update current pointers */
 	} else {
-		status = -1;
+		status = NETDEV_TX_LOCKED;
 	}
 
 	return status;

drivers/net/dm9000.c

···
 	dm9000_dbg(db, 3, "%s:\n", __func__);
 
 	if (db->tx_pkt_cnt > 1)
-		return 1;
+		return NETDEV_TX_BUSY;
 
 	spin_lock_irqsave(&db->lock, flags);
 

drivers/net/e100.c

···
 		/* This is a hard error - log it. */
 		DPRINTK(TX_ERR, DEBUG, "Out of Tx resources, returning skb\n");
 		netif_stop_queue(netdev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	netdev->trans_start = jiffies;

drivers/net/ewrk3.c

···
 err_out:
 	ENABLE_IRQs;
 	spin_unlock_irq (&lp->hw_lock);
-	return 1;
+	return NETDEV_TX_BUSY;
 }
 
 /*

drivers/net/fec.c

···
 
 	if (!fep->link) {
 		/* Link is down or autonegotiation is in progress. */
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	spin_lock_irqsave(&fep->hw_lock, flags);
···
 		 */
 		printk("%s: tx queue full!.\n", dev->name);
 		spin_unlock_irqrestore(&fep->hw_lock, flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Clear all of the status flags */

drivers/net/hamachi.c

···
 		status=readw(hmp->base + TxStatus);
 		if( !(status & 0x0001) || (status & 0x0002))
 			writew(0x0001, hmp->base + TxCmd);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Caution: the write order is important here, set the field

drivers/net/hamradio/baycom_epp.c

···
 		return 0;
 	}
 	if (bc->skb)
-		return -1;
+		return NETDEV_TX_LOCKED;
 	/* strip KISS byte */
 	if (skb->len >= HDLCDRV_MAXFLEN+1 || skb->len < 3) {
 		dev_kfree_skb(skb);

drivers/net/hamradio/hdlcdrv.c

···
 		return 0;
 	}
 	if (sm->skb)
-		return -1;
+		return NETDEV_TX_LOCKED;
 	netif_stop_queue(dev);
 	sm->skb = skb;
 	return 0;

drivers/net/hamradio/mkiss.c

···
 
 	if (!netif_running(dev))  {
 		printk(KERN_ERR "mkiss: %s: xmit call when iface is down\n", dev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	if (netif_queue_stopped(dev)) {
···
 		 */
 		if (time_before(jiffies, dev->trans_start + 20 * HZ)) {
 			/* 20 sec timeout not reached */
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 
 		printk(KERN_ERR "mkiss: %s: transmit timed out, %s?\n", dev->name,

drivers/net/ibm_newemac/core.c

···
  stop_queue:
 	netif_stop_queue(ndev);
 	DBG2(dev, "stopped TX queue" NL);
-	return 1;
+	return NETDEV_TX_BUSY;
 }
 
 /* Tx lock BHs */

drivers/net/irda/au1k_ir.c

···
 		printk(KERN_DEBUG "%s: tx_full\n", dev->name);
 		netif_stop_queue(dev);
 		aup->tx_full = 1;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	else if (((aup->tx_head + 1) & (NUM_IR_DESC - 1)) == aup->tx_tail) {
 		printk(KERN_DEBUG "%s: tx_full\n", dev->name);
 		netif_stop_queue(dev);
 		aup->tx_full = 1;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	pDB = aup->tx_db_inuse[aup->tx_head];

drivers/net/irda/sir_dev.c

···
 				 * stopped so the network layer will retry after the
 				 * fsm completes and wakes the queue.
 				 */
-				 return 1;
+				 return NETDEV_TX_BUSY;
 			}
 			else if (unlikely(err)) {
 				/* other fatal error - forget the speed change and

drivers/net/lib8390.c

···
 		spin_unlock(&ei_local->page_lock);
 		enable_irq_lockdep_irqrestore(dev->irq, &flags);
 		dev->stats.tx_errors++;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/*

drivers/net/mac89x0.c

···
 		/* Gasp!  It hasn't.  But that shouldn't happen since
 		   we're waiting for TxOk, so return 1 and requeue this packet. */
 		local_irq_restore(flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Write the contents of the packet */

drivers/net/macb.c

···
 			"BUG! Tx Ring full when queue awake!\n");
 		dev_dbg(&bp->pdev->dev, "tx_head = %u, tx_tail = %u\n",
 			bp->tx_head, bp->tx_tail);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	entry = bp->tx_head;

drivers/net/mace.c

···
 	netif_stop_queue(dev);
 	mp->tx_fullup = 1;
 	spin_unlock_irqrestore(&mp->lock, flags);
-	return 1;		/* can't take it at the moment */
+	return NETDEV_TX_BUSY;		/* can't take it at the moment */
     }
     spin_unlock_irqrestore(&mp->lock, flags);
 

drivers/net/myri10ge/myri10ge.c

···
 		/* we are out of transmit resources */
 		tx->stop_queue++;
 		netif_tx_stop_queue(netdev_queue);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Setup checksum offloading, if needed */

drivers/net/myri_sbus.c

···
 
 	if (!TX_BUFFS_AVAIL(head, tail)) {
 		DTX(("no buffs available, returning 1\n"));
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	spin_lock_irqsave(&mp->irq_lock, flags);

drivers/net/ni65.c

···
 
 	if (test_and_set_bit(0, (void*)&p->lock)) {
 		printk(KERN_ERR "%s: Queue was locked.\n", dev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	{

drivers/net/ns83820.c

···
 	if (unlikely(dev->CFG_cache & CFG_LNKSTS)) {
 		netif_stop_queue(ndev);
 		if (unlikely(dev->CFG_cache & CFG_LNKSTS))
-			return 1;
+			return NETDEV_TX_BUSY;
 		netif_start_queue(ndev);
 	}
 
···
 			netif_start_queue(ndev);
 			goto again;
 		}
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	if (free_idx == dev->tx_intr_idx) {

drivers/net/pcmcia/axnet_cs.c

···
 		outb_p(ENISR_ALL, e8390_base + EN0_IMR);
 		spin_unlock_irqrestore(&ei_local->page_lock, flags);
 		dev->stats.tx_errors++;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/*

drivers/net/pcmcia/fmvj18x_cs.c

···
 	if (length > ETH_FRAME_LEN) {
 	    printk(KERN_NOTICE "%s: Attempting to send a large packet"
 		   " (%d bytes).\n", dev->name, length);
-	    return 1;
+	    return NETDEV_TX_BUSY;
 	}
 
 	DEBUG(4, "%s: Transmitting a packet of length %lu.\n",

drivers/net/pcmcia/smc91c92_cs.c

···
 	dev->stats.tx_aborted_errors++;
 	printk(KERN_DEBUG "%s: Internal error -- sent packet while busy.\n",
 	       dev->name);
-	return 1;
+	return NETDEV_TX_BUSY;
     }
     smc->saved_skb = skb;
 

drivers/net/pcmcia/xirc2ps_cs.c

···
     DEBUG(2 + (okay ? 2 : 0), "%s: avail. tx space=%u%s\n",
 	  dev->name, freespace, okay ? " (okay)":" (not enough)");
     if (!okay) { /* not enough space */
-	return 1;  /* upper layer may decide to requeue this packet */
+	return NETDEV_TX_BUSY;  /* upper layer may decide to requeue this packet */
     }
     /* send the packet */
     PutWord(XIRCREG_EDP, (u_short)pktlen);

drivers/net/plip.c

···
 	struct plip_local *snd = &nl->snd_data;
 
 	if (netif_queue_stopped(dev))
-		return 1;
+		return NETDEV_TX_BUSY;
 
 	/* We may need to grab the bus */
 	if (!nl->port_owner) {
 		if (parport_claim(nl->pardev))
-			return 1;
+			return NETDEV_TX_BUSY;
 		nl->port_owner = 1;
 	}
 
···
 	if (skb->len > dev->mtu + dev->hard_header_len) {
 		printk(KERN_WARNING "%s: packet too big, %d.\n", dev->name, (int)skb->len);
 		netif_start_queue (dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	if (net_debug > 2)

drivers/net/sb1250-mac.c

···
 		netif_stop_queue(dev);
 		spin_unlock_irqrestore(&sc->sbm_lock, flags);
 
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	dev->trans_start = jiffies;

drivers/net/sh_eth.c

···
 		if (!sh_eth_txfree(ndev)) {
 			netif_stop_queue(ndev);
 			spin_unlock_irqrestore(&mdp->lock, flags);
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 	}
 	spin_unlock_irqrestore(&mdp->lock, flags);

drivers/net/sis900.c

···
 	/* Don't transmit data before the complete of auto-negotiation */
 	if(!sis_priv->autong_complete){
 		netif_stop_queue(net_dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	spin_lock_irqsave(&sis_priv->lock, flags);

drivers/net/skfp/skfddi.c

···
 	if (bp->QueueSkb == 0) {	// return with tbusy set: queue full
 
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	bp->QueueSkb--;
 	skb_queue_tail(&bp->SendSkbQueue, skb);

drivers/net/smc9194.c

···
 		/* THIS SHOULD NEVER HAPPEN. */
 		dev->stats.tx_aborted_errors++;
 		printk(CARDNAME": Bad Craziness - sent packet while busy.\n" );
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	lp->saved_skb = skb;
 

drivers/net/sonic.c

···
 	if (!laddr) {
 		printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
 		dev_kfree_skb(skb);
-		return 1;
+		return NETDEV_TX_BUSY
 	}
 
 	sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0);       /* clear status */

drivers/net/starfire.c

···
 	 */
 	if ((np->cur_tx - np->dirty_tx) + skb_num_frags(skb) * 2 > TX_RING_SIZE) {
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 #if defined(ZEROCOPY) && defined(HAS_BROKEN_FIRMWARE)

drivers/net/sun3_82586.c

···
 #if(NUM_XMIT_BUFFS > 1)
 	if(test_and_set_bit(0,(void *) &p->lock)) {
 		printk("%s: Queue was locked\n",dev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	else
 #endif

drivers/net/sun3lance.c

···
 	if (netif_queue_stopped(dev)) {
 		int tickssofar = jiffies - dev->trans_start;
 		if (tickssofar < 20)
-			return( 1 );
+			return NETDEV_TX_BUSY;
 
 		DPRINTK( 1, ( "%s: transmit timed out, status %04x, resetting.\n",
 					  dev->name, DREG ));
···
 	if (test_and_set_bit( 0, (void*)&lp->lock ) != 0) {
 		printk( "%s: tx queue lock!.\n", dev->name);
 		/* don't clear dev->tbusy flag. */
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	AREG = CSR0;

drivers/net/sunhme.c

···
 		spin_unlock_irq(&hp->happy_lock);
 		printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n",
 		       dev->name);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	entry = hp->tx_new;

drivers/net/tlan.c

···
 			  dev->name, priv->txHead, priv->txTail );
 		netif_stop_queue(dev);
 		priv->txBusyCount++;
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	tail_list->forward = 0;

drivers/net/tokenring/3c359.c

···
 		return 0;
 	} else {
 		spin_unlock_irqrestore(&xl_priv->xl_lock,flags) ; 
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 }

drivers/net/tokenring/lanstreamer.c

···
 	} else {
 	        netif_stop_queue(dev);
 	        spin_unlock_irqrestore(&streamer_priv->streamer_lock,flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 }
 

drivers/net/tokenring/olympic.c

···
 		return 0;
 	} else {
 		spin_unlock_irqrestore(&olympic_priv->olympic_lock,flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	} 
 
 }

drivers/net/tokenring/smctr.c

···
         netif_stop_queue(dev);
 
         if(tp->QueueSkb == 0)
-                return (1);     /* Return with tbusy set: queue full */
+                return NETDEV_TX_BUSY;     /* Return with tbusy set: queue full */
 
         tp->QueueSkb--;
         skb_queue_tail(&tp->SendSkbQueue, skb);

drivers/net/tokenring/tms380tr.c

···
 		if (tms380tr_debug > 0)
 			printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
 		spin_unlock_irqrestore(&tp->lock, flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	dmabuf = 0;

drivers/net/tulip/de2104x.c

···
 	if (tx_free == 0) {
 		netif_stop_queue(dev);
 		spin_unlock_irq(&de->lock);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	tx_free--;
 

drivers/net/tulip/de4x5.c

···
 {
     struct de4x5_private *lp = netdev_priv(dev);
     u_long iobase = dev->base_addr;
-    int status = 0;
+    int status = NETDEV_TX_OK;
     u_long flags = 0;
 
     netif_stop_queue(dev);
     if (!lp->tx_enable) {                   /* Cannot send for now */
-	return -1;
+	return NETDEV_TX_LOCKED;
     }
 
     /*
···
 
     /* Test if cache is already locked - requeue skb if so */
     if (test_and_set_bit(0, (void *)&lp->cache.lock) && !lp->interrupt)
-	return -1;
+	return NETDEV_TX_LOCKED;
 
     /* Transmit descriptor ring full or stale skb */
     if (netif_queue_stopped(dev) || (u_long) lp->tx_skb[lp->tx_new] > 1) {

drivers/net/tulip/dmfe.c

···
 		spin_unlock_irqrestore(&db->lock, flags);
 		printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n",
 		       db->tx_queue_cnt);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Disable NIC interrupt */

drivers/net/tulip/uli526x.c

···
 	if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
 		spin_unlock_irqrestore(&db->lock, flags);
 		printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n", db->tx_packet_cnt);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	/* Disable NIC interrupt */

drivers/net/wan/dlci.c

···
 	{
 		case DLCI_RET_OK:
 			dev->stats.tx_packets++;
-			ret = 0;
+			ret = NETDEV_TX_OK;
 			break;
 			case DLCI_RET_ERR:
 			dev->stats.tx_errors++;
-			ret = 0;
+			ret = NETDEV_TX_OK;
 			break;
 			case DLCI_RET_DROP:
 			dev->stats.tx_dropped++;
-			ret = 1;
+			ret = NETDEV_TX_BUSY;
 			break;
 	}
 	/* Alan Cox recommends always returning 0, and always freeing the packet */

drivers/net/wan/sbni.c

···
 		}
 	}
 
-	return  1;
+	return NETDEV_TX_BUSY;
 }
 
 #else	/* CONFIG_SBNI_MULTILINE */

drivers/net/wan/wanxl.c

···
 #endif
 		netif_stop_queue(dev);
 		spin_unlock_irq(&port->lock);
-		return 1;       /* request packet to be queued */
+		return NETDEV_TX_BUSY;       /* request packet to be queued */
 	}
 
 #ifdef DEBUG_PKT

drivers/net/wireless/airo.c

···
 		netif_stop_queue (dev);
 		if (npacks > MAXTXQ) {
 			dev->stats.tx_fifo_errors++;
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 		skb_queue_tail (&ai->txq, skb);
 		return 0;
···
 
 		if (i == MAX_FIDS / 2) {
 			dev->stats.tx_fifo_errors++;
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 	}
 	/* check min length*/
···
 
 		if (i == MAX_FIDS) {
 			dev->stats.tx_fifo_errors++;
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 	}
 	/* check min length*/

drivers/net/wireless/arlan-main.c

···
 	arlan_process_interrupt(dev);
 	netif_stop_queue (dev);
 	ARLAN_DEBUG_EXIT("arlan_tx");
-	return 1;
+	return NETDEV_TX_BUSY;
 }
 
 

drivers/net/wireless/atmel.c

···
 		spin_unlock_irqrestore(&priv->irqlock, flags);
 		spin_unlock_bh(&priv->timerlock);
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	frame_ctl = IEEE80211_FTYPE_DATA;

drivers/net/wireless/hostap/hostap_80211_tx.c

···
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
-	int ret = 1;
+	int ret = NETDEV_TX_BUSY;
 	u16 fc;
 	struct hostap_tx_data tx;
 	ap_tx_ret tx_ret;

drivers/net/wireless/ipw2x00/libipw_tx.c

···
 	spin_unlock_irqrestore(&ieee->lock, flags);
 	netif_stop_queue(dev);
 	dev->stats.tx_errors++;
-	return 1;
+	return NETDEV_TX_BUSY;
 }
 EXPORT_SYMBOL(ieee80211_xmit);
 

drivers/net/wireless/ray_cs.c

···
 
 	if (!(pcmcia_dev_present(link))) {
 		DEBUG(2, "ray_dev_start_xmit - device not present\n");
-		return -1;
+		return NETDEV_TX_LOCKED;
 	}
 	DEBUG(3, "ray_dev_start_xmit(skb=%p, dev=%p)\n", skb, dev);
 	if (local->authentication_state == NEED_TO_AUTH) {
···
 		if (!build_auth_frame(local, local->auth_id, OPEN_AUTH_REQUEST)) {
 			local->authentication_state = AUTHENTICATED;
 			netif_stop_queue(dev);
-			return 1;
+			return NETDEV_TX_BUSY;
 		}
 	}
 
···
 	case XMIT_NO_CCS:
 	case XMIT_NEED_AUTH:
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	case XMIT_NO_INTR:
 	case XMIT_MSG_BAD:
 	case XMIT_OK:

drivers/net/wireless/strip.c

···
 	if (!netif_running(dev)) {
 		printk(KERN_ERR "%s: xmit call when iface is down\n",
 		       dev->name);
-		return (1);
+		return NETDEV_TX_BUSY;
 	}
 
 	netif_stop_queue(dev);

drivers/net/wireless/wavelan.c

···
 		spin_unlock_irqrestore(&lp->spinlock, flags);
 		/* Check that we can continue */
 		if (lp->tx_n_in_use == (NTXBLOCKS - 1))
-			return 1;
+			return NETDEV_TX_BUSY;
 	}
 
 	/* Do we need some padding? */
···
 		skb_copy_from_linear_data(skb, data, skb->len);
 		/* Write packet on the card */
 		if(wv_packet_write(dev, data, ETH_ZLEN))
-			return 1;	/* We failed */
+			return NETDEV_TX_BUSY;	/* We failed */
 	}
 	else if(wv_packet_write(dev, skb->data, skb->len))
-		return 1;	/* We failed */
+		return NETDEV_TX_BUSY;	/* We failed */
 
 
 	dev_kfree_skb(skb);

drivers/s390/net/netiucv.c

···
 		return NETDEV_TX_BUSY;
 	}
 	dev->trans_start = jiffies;
-	rc = netiucv_transmit_skb(privptr->conn, skb) != 0;
+	rc = netiucv_transmit_skb(privptr->conn, skb);
 	netiucv_clear_busy(dev);
-	return rc;
+	return rc ? NETDEV_TX_BUSY : NETDEV_TX_OK;
 }
 
 /**

drivers/staging/et131x/et131x_netdev.c

···
 			 * available
 			 */
 			netif_stop_queue(netdev);
-			status = 1;
+			status = NETDEV_TX_BUSY;
 		} else {
 			DBG_WARNING(et131x_dbginfo,
 				    "Misc error; drop packet\n");
-			status = 0;
+			status = NETDEV_TX_OK;
 		}
 	}
 

drivers/staging/rtl8187se/ieee80211/ieee80211_tx.c

···
 	spin_unlock_irqrestore(&ieee->lock, flags);
 	netif_stop_queue(dev);
 	stats->tx_errors++;
-	return 1;
+	return NETDEV_TX_BUSY;
 
 }
 

drivers/staging/wlan-ng/p80211netdev.c

···
 		/* success and more buf */
 		/* avail, re: hw_txdata */
 		netif_wake_queue(wlandev->netdev);
-		result = 0;
+		result = NETDEV_TX_OK;
 	} else if (txresult == 1) {
 		/* success, no more avail */
 		pr_debug("txframe success, no more bufs\n");
 		/* netdev->tbusy = 1;  don't set here, irqhdlr */
 		/*   may have already cleared it */
-		result = 0;
+		result = NETDEV_TX_OK;
 	} else if (txresult == 2) {
 		/* alloc failure, drop frame */
 		pr_debug("txframe returned alloc_fail\n");
-		result = 1;
+		result = NETDEV_TX_BUSY;
 	} else {
 		/* buffer full or queue busy, drop frame. */
 		pr_debug("txframe returned full or busy\n");
-		result = 1;
+		result = NETDEV_TX_BUSY;
 	}
 
 failed:

drivers/usb/gadget/u_ether.c

···
 	 */
 	if (list_empty(&dev->tx_reqs)) {
 		spin_unlock_irqrestore(&dev->req_lock, flags);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 
 	req = container_of(dev->tx_reqs.next, struct usb_request, list);

net/mac80211/tx.c

···
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_local *local = sdata->local;
-	int ret = 1, head_need;
+	int ret = NETDEV_TX_BUSY, head_need;
 	u16 ethertype, hdrlen,  meshhdrlen = 0;
 	__le16 fc;
 	struct ieee80211_hdr hdr;

net/rose/rose_dev.c

···
 
 	if (!netif_running(dev)) {
 		printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n");
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	dev_kfree_skb(skb);
 	stats->tx_errors++;

net/sched/sch_teql.c

···
 
 	if (busy) {
 		netif_stop_queue(dev);
-		return 1;
+		return NETDEV_TX_BUSY;
 	}
 	dev->stats.tx_errors++;