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/route.c b/net/ipv6/route.c
index 032a5ec..658293e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -800,7 +800,7 @@
if (rt6_need_strict(&iph->daddr) && skb->dev->type != ARPHRD_PIMREG)
flags |= RT6_LOOKUP_F_IFACE;
- skb->dst = fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input);
+ skb_dst_set(skb, fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input));
}
static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table *table,
@@ -911,7 +911,7 @@
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0, skb->dev);
- rt = (struct rt6_info *) skb->dst;
+ rt = (struct rt6_info *) skb_dst(skb);
if (rt) {
if (rt->rt6i_flags&RTF_CACHE) {
dst_set_expires(&rt->u.dst, 0);
@@ -1868,7 +1868,7 @@
static int ip6_pkt_drop(struct sk_buff *skb, int code, int ipstats_mib_noroutes)
{
int type;
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
switch (ipstats_mib_noroutes) {
case IPSTATS_MIB_INNOROUTES:
type = ipv6_addr_type(&ipv6_hdr(skb)->daddr);
@@ -1895,7 +1895,7 @@
static int ip6_pkt_discard_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_OUTNOROUTES);
}
@@ -1908,7 +1908,7 @@
static int ip6_pkt_prohibit_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
}
@@ -2366,7 +2366,7 @@
skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr));
rt = (struct rt6_info*) ip6_route_output(net, NULL, &fl);
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
err = rt6_fill_node(net, skb, rt, &fl.fl6_dst, &fl.fl6_src, iif,
RTM_NEWROUTE, NETLINK_CB(in_skb).pid,