Commit 7161c76f authored by David S. Miller's avatar David S. Miller
Browse files

atm: clip: Convert over to dst_neigh_lookup(). 



CLIP only support ipv4, and this is evidenced by the fact that it
is a device specific extension of arp_tbl, so this conversion is
pretty straightforward.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3329bdfc

net/atm/clip.c

+13 −4
Original line number Diff line number Diff line
@@ -328,6 +328,8 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb, 
	struct atmarp_entry *entry;

	struct neighbour *n;

	struct atm_vcc *vcc;

	struct rtable *rt;

	__be32 *daddr;

	int old;

	unsigned long flags;
@@ -338,7 +340,12 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb, 
		dev->stats.tx_dropped++;

		return NETDEV_TX_OK;

	}

	n = dst_get_neighbour_noref(dst);

	rt = (struct rtable *) dst;

	if (rt->rt_gateway)

		daddr = &rt->rt_gateway;

	else

		daddr = &ip_hdr(skb)->daddr;

	n = dst_neigh_lookup(dst, daddr);

	if (!n) {

		pr_err("NO NEIGHBOUR !\n");

		dev_kfree_skb(skb);
@@ -358,7 +365,7 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb, 
			dev_kfree_skb(skb);

			dev->stats.tx_dropped++;

		}

		return NETDEV_TX_OK;

		goto out_release_neigh;

	}

	pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);

	ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
@@ -377,14 +384,14 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb, 
	old = xchg(&entry->vccs->xoff, 1);	/* assume XOFF ... */

	if (old) {

		pr_warning("XOFF->XOFF transition\n");

		return NETDEV_TX_OK;

		goto out_release_neigh;

	}

	dev->stats.tx_packets++;

	dev->stats.tx_bytes += skb->len;

	vcc->send(vcc, skb);

	if (atm_may_send(vcc, 0)) {

		entry->vccs->xoff = 0;

		return NETDEV_TX_OK;

		goto out_release_neigh;

	}

	spin_lock_irqsave(&clip_priv->xoff_lock, flags);

	netif_stop_queue(dev);	/* XOFF -> throttle immediately */
@@ -396,6 +403,8 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb, 
	   of the brief netif_stop_queue. If this isn't true or if it

	   changes, use netif_wake_queue instead. */

	spin_unlock_irqrestore(&clip_priv->xoff_lock, flags);

out_release_neigh:

	neigh_release(n);

	return NETDEV_TX_OK;

}