net: skb->dst accessors
Define three accessors to get/set dst attached to a skb
struct dst_entry *skb_dst(const struct sk_buff *skb)
void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)
void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;
Delete skb->dst field
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index b3a59bd..68e5230 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -575,8 +575,7 @@
tunnel->dev->stats.rx_packets++;
tunnel->dev->stats.rx_bytes += skb->len;
skb->dev = tunnel->dev;
- dst_release(skb->dst);
- skb->dst = NULL;
+ skb_dst_drop(skb);
nf_reset(skb);
ipip6_ecn_decapsulate(iph, skb);
netif_rx(skb);
@@ -638,8 +637,8 @@
if (dev->priv_flags & IFF_ISATAP) {
struct neighbour *neigh = NULL;
- if (skb->dst)
- neigh = skb->dst->neighbour;
+ if (skb_dst(skb))
+ neigh = skb_dst(skb)->neighbour;
if (neigh == NULL) {
if (net_ratelimit())
@@ -663,8 +662,8 @@
if (!dst) {
struct neighbour *neigh = NULL;
- if (skb->dst)
- neigh = skb->dst->neighbour;
+ if (skb_dst(skb))
+ neigh = skb_dst(skb)->neighbour;
if (neigh == NULL) {
if (net_ratelimit())
@@ -714,7 +713,7 @@
if (tiph->frag_off)
mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
else
- mtu = skb->dst ? dst_mtu(skb->dst) : dev->mtu;
+ mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
if (mtu < 68) {
stats->collisions++;
@@ -723,8 +722,8 @@
}
if (mtu < IPV6_MIN_MTU)
mtu = IPV6_MIN_MTU;
- if (tunnel->parms.iph.daddr && skb->dst)
- skb->dst->ops->update_pmtu(skb->dst, mtu);
+ if (tunnel->parms.iph.daddr && skb_dst(skb))
+ skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
if (skb->len > mtu) {
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu, dev);
@@ -768,8 +767,8 @@
skb_reset_network_header(skb);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags = 0;
- 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.