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authorEric Dumazet <edumazet@google.com>2015-10-02 21:43:32 +0300
committerDavid S. Miller <davem@davemloft.net>2015-10-03 14:32:41 +0300
commit079096f103faca2dd87342cca6f23d4b34da8871 (patch)
treefa3fb0fdc064f1611c464384e70a7a402179808f /include/net/inet_connection_sock.h
parent2feda34192a379f8b35a7c6c5826b2f23e884f32 (diff)
downloadlinux-079096f103faca2dd87342cca6f23d4b34da8871.tar.xz
tcp/dccp: install syn_recv requests into ehash table
In this patch, we insert request sockets into TCP/DCCP regular ehash table (where ESTABLISHED and TIMEWAIT sockets are) instead of using the per listener hash table. ACK packets find SYN_RECV pseudo sockets without having to find and lock the listener. In nominal conditions, this halves pressure on listener lock. Note that this will allow for SO_REUSEPORT refinements, so that we can select a listener using cpu/numa affinities instead of the prior 'consistent hash', since only SYN packets will apply this selection logic. We will shrink listen_sock in the following patch to ease code review. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ying Cai <ycai@google.com> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_connection_sock.h')
-rw-r--r--include/net/inet_connection_sock.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index b2e2e30befa9..730aa034cd3d 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -258,10 +258,6 @@ inet_csk_rto_backoff(const struct inet_connection_sock *icsk,
struct sock *inet_csk_accept(struct sock *sk, int flags, int *err);
-struct request_sock *inet_csk_search_req(struct sock *sk,
- const __be16 rport,
- const __be32 raddr,
- const __be32 laddr);
int inet_csk_bind_conflict(const struct sock *sk,
const struct inet_bind_bucket *tb, bool relax);
int inet_csk_get_port(struct sock *sk, unsigned short snum);