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authorEric Dumazet <dada1@cosmosbay.com>2008-03-05 18:30:47 -0800
committerDavid S. Miller <davem@davemloft.net>2008-03-05 18:30:47 -0800
commitee6b967301b4aa5d4a4b61e2f682f086266db9fb (patch)
tree197c2430f87733dc80d00d1971f1be2a0e562358 /net/ipv4/tcp_ipv4.c
parenta05c44f6d5fb6cd29da04f96bf5ffaa05f545ac5 (diff)
downloadblackbird-op-linux-ee6b967301b4aa5d4a4b61e2f682f086266db9fb.tar.gz
blackbird-op-linux-ee6b967301b4aa5d4a4b61e2f682f086266db9fb.zip
[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts
(Anonymous) unions can help us to avoid ugly casts. A common cast it the (struct rtable *)skb->dst one. Defining an union like : union { struct dst_entry *dst; struct rtable *rtable; }; permits to use skb->rtable in place. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 3873c4dbeaeb..a79e324638eb 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -552,7 +552,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
if (th->rst)
return;
- if (((struct rtable *)skb->dst)->rt_type != RTN_LOCAL)
+ if (skb->rtable->rt_type != RTN_LOCAL)
return;
/* Swap the send and the receive. */
@@ -1262,8 +1262,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
#endif
/* Never answer to SYNs send to broadcast or multicast */
- if (((struct rtable *)skb->dst)->rt_flags &
- (RTCF_BROADCAST | RTCF_MULTICAST))
+ if (skb->rtable->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
goto drop;
/* TW buckets are converted to open requests without
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