diff options
| author |   Florin Coras <fcoras@cisco.com> | 2017-05-04 14:25:50 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2017-05-07 12:38:39 +0000 |
| commit | c8343412ee0deaa8e9192cbc4846aae1e9f48a4d (patch) | |
| tree | abcf3611fe398e7744dc9c9bdb080a1453caa9e4 /src/vnet/tcp/tcp_input.c | |
| parent | 3af90fceb61d0c236709c25df936bbbf304cbff5 (diff) | |
Include TCP options in segment size computation
Ensure that TCP data plus options does not exceed peer's advertised MSS.
Change-Id: I0de824cb3619346f0394dd694942fc1cf33a82b7
Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
| -rw-r--r-- | src/vnet/tcp/tcp_input.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index e9c52c5e..d268251c 100644 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -389,10 +389,14 @@ static int tcp_update_rtt (tcp_connection_t * tc, u32 ack) { u32 mrtt = 0; + u8 rtx_acked; + + /* Determine if only rtx bytes are acked. TODO fast retransmit */ + rtx_acked = tc->rto_boff && (tc->bytes_acked <= tc->snd_mss); /* Karn's rule, part 1. Don't use retransmitted segments to estimate * RTT because they're ambiguous. */ - if (tc->rtt_ts && seq_geq (ack, tc->rtt_seq) && !tc->rto_boff) + if (tc->rtt_ts && seq_geq (ack, tc->rtt_seq) && !rtx_acked) { mrtt = tcp_time_now () - tc->rtt_ts; } |