net: skb->dst accessors

[safe/jmp/linux-2.6] / net / ipv4 / ip_gre.c

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 85ddad4..44e2a3d 100644 (file)
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -643,8 +643,7 @@ static int ipgre_rcv(struct sk_buff *skb)
                stats->rx_packets++;
                stats->rx_bytes += len;
                skb->dev = tunnel->dev;
-               dst_release(skb->dst);
-               skb->dst = NULL;
+               skb_dst_drop(skb);
                nf_reset(skb);
 
                skb_reset_network_header(skb);
@@ -698,7 +697,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        if ((dst = tiph->daddr) == 0) {
                /* NBMA tunnel */
 
-               if (skb->dst == NULL) {
+               if (skb_dst(skb) == NULL) {
                        stats->tx_fifo_errors++;
                        goto tx_error;
                }
@@ -712,7 +711,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
                else if (skb->protocol == htons(ETH_P_IPV6)) {
                        struct in6_addr *addr6;
                        int addr_type;
-                       struct neighbour *neigh = skb->dst->neighbour;
+                       struct neighbour *neigh = skb_dst(skb)->neighbour;
 
                        if (neigh == NULL)
                                goto tx_error;
@@ -766,10 +765,10 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        if (df)
                mtu = dst_mtu(&rt->u.dst) - dev->hard_header_len - tunnel->hlen;
        else
-               mtu = skb->dst ? dst_mtu(skb->dst) : dev->mtu;
+               mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
 
-       if (skb->dst)
-               skb->dst->ops->update_pmtu(skb->dst, mtu);
+       if (skb_dst(skb))
+               skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
 
        if (skb->protocol == htons(ETH_P_IP)) {
                df |= (old_iph->frag_off&htons(IP_DF));
@@ -783,14 +782,14 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        }
 #ifdef CONFIG_IPV6
        else if (skb->protocol == htons(ETH_P_IPV6)) {
-               struct rt6_info *rt6 = (struct rt6_info *)skb->dst;
+               struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
 
-               if (rt6 && mtu < dst_mtu(skb->dst) && mtu >= IPV6_MIN_MTU) {
+               if (rt6 && mtu < dst_mtu(skb_dst(skb)) && mtu >= IPV6_MIN_MTU) {
                        if ((tunnel->parms.iph.daddr &&
                             !ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
                            rt6->rt6i_dst.plen == 128) {
                                rt6->rt6i_flags |= RTF_MODIFIED;
-                               skb->dst->metrics[RTAX_MTU-1] = mtu;
+                               skb_dst(skb)->metrics[RTAX_MTU-1] = mtu;
                        }
                }
 
@@ -837,8 +836,8 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
        memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
        IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
                              IPSKB_REROUTED);
-       dst_release(skb->dst);
-       skb->dst = &rt->u.dst;
+       skb_dst_drop(skb);
+       skb_dst_set(skb, &rt->u.dst);
 
        /*
         *      Push down and install the IPIP header.