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: David S. Miller <davem@davemloft.net>

diff --git a/net/atm/clip.c b/net/atm/clip.c
index c12c2582457cf80cb2844563196a3473a9d17e00..ef95a30306fa3e7845e4778c9757dca10efd5ce2 100644 (file)
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -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;
 }