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authorFlorian Westphal <fw@strlen.de>2008-03-24 01:21:28 -0400
committerDavid S. Miller <davem@davemloft.net>2008-03-24 01:21:28 -0400
commit2051f11fb86b0056fec440fe7e9fa8370d60a5c6 (patch)
treee93befbb8fb6590994b51aa213bf9596c0070bc1 /include
parent310afe86af8ddd96a06b75aa61ef1af233f80e89 (diff)
[TCP]: Shrink syncookie_secret by 8 byte.
the first u32 copied from syncookie_secret is overwritten by the minute-counter four lines below. After adjusting the destination address, the size of syncookie_secret can be reduced accordingly. AFAICS, the only other user of syncookie_secret[] is the ipv6 syncookie support. Because ipv6 syncookies only grab 44 bytes from syncookie_secret[], this shouldn't affect them in any way. With fixes from Glenn Griffin. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Glenn Griffin <ggriffin.kernel@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/tcp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 67cc3956d29c..723b36851dde 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -436,7 +436,7 @@ extern int tcp_disconnect(struct sock *sk, int flags);
436extern void tcp_unhash(struct sock *sk); 436extern void tcp_unhash(struct sock *sk);
437 437
438/* From syncookies.c */ 438/* From syncookies.c */
439extern __u32 syncookie_secret[2][16-3+SHA_DIGEST_WORDS]; 439extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];
440extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, 440extern struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
441 struct ip_options *opt); 441 struct ip_options *opt);
442extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, 442extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb,