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| author |   bluhm <bluhm@openbsd.org> | 2016-07-20 19:57:53 +0000 |
|---|---|---|
| committer | bluhm <bluhm@openbsd.org> | 2016-07-20 19:57:53 +0000 |
| commit | 01461878cdf93c9dff6ec80e05aa8f172daae557 (patch) | |
| tree | 6b714dfd8aafaa50efa6022838f1fcbadb62d59a /sys/netinet/tcp_var.h | |
| parent | Use more compact idiom to select architecture dependent files to compile. No (diff) | |
| download | wireguard-openbsd-01461878cdf93c9dff6ec80e05aa8f172daae557.tar.xz wireguard-openbsd-01461878cdf93c9dff6ec80e05aa8f172daae557.zip | |
To tune the TCP SYN cache we need more information. Print the
relevant counters with netstat -s -p tcp.
OK henning@
Diffstat (limited to 'sys/netinet/tcp_var.h')
| -rw-r--r-- | sys/netinet/tcp_var.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h index 22619571321..ebf72fade0c 100644 --- a/sys/netinet/tcp_var.h +++ b/sys/netinet/tcp_var.h @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_var.h,v 1.114 2016/07/20 09:15:28 bluhm Exp $ */ +/* $OpenBSD: tcp_var.h,v 1.115 2016/07/20 19:57:53 bluhm Exp $ */ /* $NetBSD: tcp_var.h,v 1.17 1996/02/13 23:44:24 christos Exp $ */ /* @@ -454,6 +454,12 @@ struct tcpstat { u_int64_t tcps_sc_collisions; /* # of hash collisions */ u_int64_t tcps_sc_retransmitted;/* # of retransmissions */ u_int64_t tcps_sc_seedrandom; /* # of syn cache seeds with random */ + u_int64_t tcps_sc_hash_size; /* hash buckets in current syn cache */ + u_int64_t tcps_sc_entry_count; /* # of entries in current syn cache */ + u_int64_t tcps_sc_entry_limit; /* limit of syn cache entries */ + u_int64_t tcps_sc_bucket_maxlen;/* maximum # of entries in any bucket */ + u_int64_t tcps_sc_bucket_limit; /* limit of syn cache bucket list */ + u_int64_t tcps_sc_uses_left; /* use counter of current syn cache */ u_int64_t tcps_conndrained; /* # of connections drained */ @@ -584,6 +590,7 @@ extern int tcp_syn_cache_limit; /* max entries for compressed state engine */ extern int tcp_syn_bucket_limit;/* max entries per hash bucket */ extern int tcp_syn_use_limit; /* number of uses before reseeding hash */ extern struct syn_cache_set tcp_syn_cache[]; +extern int tcp_syn_cache_active; /* active syn cache, may be 0 or 1 */ int tcp_attach(struct socket *); void tcp_canceltimers(struct tcpcb *); |