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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-09-07 14:18:36 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-09-07 14:18:36 -0700 |
| commit | 7e66eaf14e19c032433be7c4df3c892fa2a5282f (patch) | |
| tree | 56b0d5f9d16eb18744e102f3f216715196cd62e6 /include/net/tcp.h | |
| parent | d3654d7ef3adad0083525cfb6fe27be62cb83d0d (diff) | |
| parent | c6a389f123b9f68d605bb7e0f9b32ec1e3e14132 (diff) | |
Merge commit 'v3.1-rc4' into next
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index cda30ea354a..149a415d1e0 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -122,7 +122,13 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo); #endif #define TCP_RTO_MAX ((unsigned)(120*HZ)) #define TCP_RTO_MIN ((unsigned)(HZ/5)) -#define TCP_TIMEOUT_INIT ((unsigned)(3*HZ)) /* RFC 1122 initial RTO value */ +#define TCP_TIMEOUT_INIT ((unsigned)(1*HZ)) /* RFC2988bis initial RTO value */ +#define TCP_TIMEOUT_FALLBACK ((unsigned)(3*HZ)) /* RFC 1122 initial RTO value, now + * used as a fallback RTO for the + * initial data transmission if no + * valid RTT sample has been acquired, + * most likely due to retrans in 3WHS. + */ #define TCP_RESOURCE_PROBE_INTERVAL ((unsigned)(HZ/2U)) /* Maximal interval between probes * for local resources. @@ -295,7 +301,7 @@ static inline void tcp_synq_overflow(struct sock *sk) static inline int tcp_synq_no_recent_overflow(const struct sock *sk) { unsigned long last_overflow = tcp_sk(sk)->rx_opt.ts_recent_stamp; - return time_after(jiffies, last_overflow + TCP_TIMEOUT_INIT); + return time_after(jiffies, last_overflow + TCP_TIMEOUT_FALLBACK); } extern struct proto tcp_prot; @@ -508,6 +514,7 @@ extern void tcp_initialize_rcv_mss(struct sock *sk); extern int tcp_mtu_to_mss(struct sock *sk, int pmtu); extern int tcp_mss_to_mtu(struct sock *sk, int mss); extern void tcp_mtup_init(struct sock *sk); +extern void tcp_valid_rtt_meas(struct sock *sk, u32 seq_rtt); static inline void tcp_bound_rto(const struct sock *sk) { |