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authorDavid S. Miller <davem@davemloft.net>2008-09-08 20:28:59 -0400
committerDavid S. Miller <davem@davemloft.net>2008-09-08 20:28:59 -0400
commit0a68a20cc3eafa73bb54097c28b921147d7d3685 (patch)
tree8e5f315226b618cb8e050a0c7653c8ec134501e3 /net/ipv4/tcp_input.c
parent17dce5dfe38ae2fb359b61e855f5d8a3a8b7892b (diff)
parenta3cbdde8e9c38b66b4f13ac5d6ff1939ded0ff20 (diff)
Merge branch 'dccp' of git://eden-feed.erg.abdn.ac.uk/dccp_exp
Conflicts: net/dccp/input.c net/dccp/options.c
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index f79a51607292..9da9f19ece8a 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -811,25 +811,12 @@ void tcp_update_metrics(struct sock *sk)
811 } 811 }
812} 812}
813 813
814/* Numbers are taken from RFC3390.
815 *
816 * John Heffner states:
817 *
818 * The RFC specifies a window of no more than 4380 bytes
819 * unless 2*MSS > 4380. Reading the pseudocode in the RFC
820 * is a bit misleading because they use a clamp at 4380 bytes
821 * rather than use a multiplier in the relevant range.
822 */
823__u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst) 814__u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst)
824{ 815{
825 __u32 cwnd = (dst ? dst_metric(dst, RTAX_INITCWND) : 0); 816 __u32 cwnd = (dst ? dst_metric(dst, RTAX_INITCWND) : 0);
826 817
827 if (!cwnd) { 818 if (!cwnd)
828 if (tp->mss_cache > 1460) 819 cwnd = rfc3390_bytes_to_packets(tp->mss_cache);
829 cwnd = 2;
830 else
831 cwnd = (tp->mss_cache > 1095) ? 3 : 4;
832 }
833 return min_t(__u32, cwnd, tp->snd_cwnd_clamp); 820 return min_t(__u32, cwnd, tp->snd_cwnd_clamp);
834} 821}
835 822