diff options
Diffstat (limited to 'include/net')
-rw-r--r-- | include/net/tcp.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 1b94b9bfe2dc..b55b4891029e 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h | |||
@@ -265,6 +265,19 @@ static inline int tcp_too_many_orphans(struct sock *sk, int num) | |||
265 | atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2]); | 265 | atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2]); |
266 | } | 266 | } |
267 | 267 | ||
268 | /* syncookies: remember time of last synqueue overflow */ | ||
269 | static inline void tcp_synq_overflow(struct sock *sk) | ||
270 | { | ||
271 | tcp_sk(sk)->rx_opt.ts_recent_stamp = jiffies; | ||
272 | } | ||
273 | |||
274 | /* syncookies: no recent synqueue overflow on this listening socket? */ | ||
275 | static inline int tcp_synq_no_recent_overflow(const struct sock *sk) | ||
276 | { | ||
277 | unsigned long last_overflow = tcp_sk(sk)->rx_opt.ts_recent_stamp; | ||
278 | return time_after(jiffies, last_overflow + TCP_TIMEOUT_INIT); | ||
279 | } | ||
280 | |||
268 | extern struct proto tcp_prot; | 281 | extern struct proto tcp_prot; |
269 | 282 | ||
270 | #define TCP_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.tcp_statistics, field) | 283 | #define TCP_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.tcp_statistics, field) |