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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2008-09-20 21:25:15 -0700
committerDavid S. Miller <davem@davemloft.net>2008-09-20 21:25:15 -0700
commitef9da47c7cc64d69526331f315e76b5680d4048f (patch)
tree97407b83c7c339dbe1fd0948c30f35e1680562ec /include
parentf0ceb0ed86b4792a4ed9d3438f5f7572e48f9803 (diff)
tcp: don't clear retransmit_skb_hint when not necessary
Most importantly avoid doing it with cumulative ACK. Not clearing means that we no longer need n^2 processing in resolution of each fast recovery. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/tcp.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 220f54cf42ec..ea815723d414 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1037,10 +1037,15 @@ static inline void tcp_mib_init(struct net *net)
}
/* from STCP */
-static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp)
+static inline void tcp_clear_retrans_hints_partial(struct tcp_sock *tp)
{
tp->lost_skb_hint = NULL;
tp->scoreboard_skb_hint = NULL;
+}
+
+static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp)
+{
+ tcp_clear_retrans_hints_partial(tp);
tp->retransmit_skb_hint = NULL;
}