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authorFlorian Westphal <fw@strlen.de>2009-04-19 13:43:48 +0400
committerDavid S. Miller <davem@davemloft.net>2009-04-20 13:25:26 +0400
commita0f82f64e26929776c58a5c93c2ecb38e3d82815 (patch)
tree8c39812fc6fc8133cc28944e38b44c941d8fa3ce /include/linux/tcp.h
parent7eebb0b28f755e297d355a205bb04945b256db6b (diff)
downloadlinux-a0f82f64e26929776c58a5c93c2ecb38e3d82815.tar.xz
syncookies: remove last_synq_overflow from struct tcp_sock
last_synq_overflow eats 4 or 8 bytes in struct tcp_sock, even though it is only used when a listening sockets syn queue is full. We can (ab)use rx_opt.ts_recent_stamp to store the same information; it is not used otherwise as long as a socket is in listen state. Move linger2 around to avoid splitting struct mtu_probe across cacheline boundary on 32 bit arches. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 9d5078bd23a3..8afac76cd748 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -377,7 +377,7 @@ struct tcp_sock {
unsigned int keepalive_time; /* time before keep alive takes place */
unsigned int keepalive_intvl; /* time interval between keep alive probes */
- unsigned long last_synq_overflow;
+ int linger2;
/* Receiver side RTT estimation */
struct {
@@ -406,8 +406,6 @@ struct tcp_sock {
/* TCP MD5 Signagure Option information */
struct tcp_md5sig_info *md5sig_info;
#endif
-
- int linger2;
};
static inline struct tcp_sock *tcp_sk(const struct sock *sk)