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[TCP]: Add pluggable congestion control algorithm infrastructure.

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Allow TCP to have multiple pluggable congestion control algorithms.
Algorithms are defined by a set of operations and can be built in
or modules.  The legacy "new RENO" algorithm is used as a starting
point and fallback.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2005-06-23 12:19:55 -07:00
committed by David S. Miller
parent a8ad86f2dc
commit 317a76f9a4
13 changed files with 399 additions and 999 deletions
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3
net/ipv4/tcp_ipv4.c
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@@ -2048,6 +2048,7 @@ static int tcp_v4_init_sock(struct sock *sk)
tp->mss_cache_std = tp->mss_cache = 536;
tp->reordering = sysctl_tcp_reordering;
tp->ca_ops = &tcp_reno;
sk->sk_state = TCP_CLOSE;
@@ -2070,6 +2071,8 @@ int tcp_v4_destroy_sock(struct sock *sk)
tcp_clear_xmit_timers(sk);
tcp_cleanup_congestion_control(tp);
/* Cleanup up the write buffer. */
sk_stream_writequeue_purge(sk);