diff options
| author |   Florin Coras <fcoras@cisco.com> | 2019-09-12 18:36:44 -0700 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-10-02 01:49:36 +0000 |
| commit | d4aa3d9f885ee9b260008c4bde7884949a86afea (patch) | |
| tree | 35340d6fb1f4af971832ea263dd0a7fc0aa72b92 /src/vnet/tcp/tcp_newreno.c | |
| parent | 45aab261a16373bb933ff4551290ac0f77f1cc44 (diff) | |
tcp: use sacks for timer based recovery
Type: feature
If available, reuse sack scoreboard in timer triggered retransmit to
minimize spurious retransmits.
Additional changes/refactoring:
- limited transmit updates
- add sacked rxt count to scoreboard
- prr pacing of fast retransmits
- startup pacing updates
- changed loss window to flight + mss
Change-Id: I057de6a9d6401698bd1031d5cf5cfbb62f2bdf61
Signed-off-by: Florin Coras <fcoras@cisco.com>
(cherry picked from commit 36ebcfffbc7ab0e83b4bb8dfaec16bf16cafb954)
Diffstat (limited to 'src/vnet/tcp/tcp_newreno.c')
| -rw-r--r-- | src/vnet/tcp/tcp_newreno.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/src/vnet/tcp/tcp_newreno.c b/src/vnet/tcp/tcp_newreno.c index 8b704a6ba04..e9213a2e6d9 100644 --- a/src/vnet/tcp/tcp_newreno.c +++ b/src/vnet/tcp/tcp_newreno.c @@ -20,17 +20,11 @@ newreno_congestion (tcp_connection_t * tc) { tc->ssthresh = clib_max (tcp_flight_size (tc) / 2, 2 * tc->snd_mss); tc->cwnd = tc->ssthresh; - /* Post retransmit update cwnd to ssthresh and account for the - * three segments that have left the network and should've been - * buffered at the receiver XXX */ - if (!tcp_opts_sack_permitted (&tc->rcv_opts)) - tc->cwnd += 3 * tc->snd_mss; } static void newreno_loss (tcp_connection_t * tc) { - tc->ssthresh = clib_max (tcp_flight_size (tc) / 2, 2 * tc->snd_mss); tc->cwnd = tcp_loss_wnd (tc); } |