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authorEric Dumazet <eric.dumazet@gmail.com>2009-11-30 12:53:30 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-30 12:53:30 -0800
commit1fdf475aa141a669af8db6ccc7015f0b725087de (patch)
tree7298a884935feb59352566ca6119856a0e322cb5
parent0cae200eec6330cd2c20b24279597be1da50dc93 (diff)
tcp: tcp_disconnect() should clear window_clamp
NFS can reuse its TCP socket after calling tcp_disconnect(). We noticed window scaling was not negotiated in SYN packet of next connection request. Fix is to clear tp->window_clamp in tcp_disconnect(). Reported-by: Krzysztof Oledzki <ole@ans.pl> Tested-by: Krzysztof Oledzki <ole@ans.pl> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/tcp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f1813bc71088..d7a884c534a6 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2059,6 +2059,7 @@ int tcp_disconnect(struct sock *sk, int flags)
tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
tp->snd_cwnd_cnt = 0;
tp->bytes_acked = 0;
+ tp->window_clamp = 0;
tcp_set_ca_state(sk, TCP_CA_Open);
tcp_clear_retrans(tp);
inet_csk_delack_init(sk);