diff options
| author | Florian Westphal <fw@strlen.de> | 2008-03-24 01:21:28 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-24 01:21:28 -0400 |
| commit | 2051f11fb86b0056fec440fe7e9fa8370d60a5c6 (patch) | |
| tree | e93befbb8fb6590994b51aa213bf9596c0070bc1 /net/ipv6/syncookies.c | |
| parent | 310afe86af8ddd96a06b75aa61ef1af233f80e89 (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 'net/ipv6/syncookies.c')
| -rw-r--r-- | net/ipv6/syncookies.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 827c5aa7524c..3a622e7abc02 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c | |||
| @@ -22,7 +22,7 @@ | |||
| 22 | #include <net/tcp.h> | 22 | #include <net/tcp.h> |
| 23 | 23 | ||
| 24 | extern int sysctl_tcp_syncookies; | 24 | extern int sysctl_tcp_syncookies; |
| 25 | extern __u32 syncookie_secret[2][16-3+SHA_DIGEST_WORDS]; | 25 | extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS]; |
| 26 | 26 | ||
| 27 | #define COOKIEBITS 24 /* Upper bits store count */ | 27 | #define COOKIEBITS 24 /* Upper bits store count */ |
| 28 | #define COOKIEMASK (((__u32)1 << COOKIEBITS) - 1) | 28 | #define COOKIEMASK (((__u32)1 << COOKIEBITS) - 1) |