git: fb6ac317c065 - releng/13.0 - rack: unbreak TCP fast open for the client side
Michael Tuexen
tuexen at FreeBSD.org
Mon Mar 8 13:21:27 UTC 2021
The branch releng/13.0 has been updated by tuexen:
URL: https://cgit.FreeBSD.org/src/commit/?id=fb6ac317c065a3d760927cbbc1f12e604b44391f
commit fb6ac317c065a3d760927cbbc1f12e604b44391f
Author: Michael Tuexen <tuexen at FreeBSD.org>
AuthorDate: 2021-03-05 14:57:26 +0000
Commit: Michael Tuexen <tuexen at FreeBSD.org>
CommitDate: 2021-03-08 12:46:26 +0000
rack: unbreak TCP fast open for the client side
Allow sending user data on the SYN segment.
Reviewed by: rrs
Approved by: re (gjb)
Differential Revision: https://reviews.freebsd.org/D29082
Sponsored by: Netflix, Inc.
(cherry picked from commit 705d06b289e9821439b7b694d766cad75bc064e5)
(cherry picked from commit 873f8376015c12febec3619976a8c30fbead4ad6)
---
sys/netinet/tcp_stacks/rack.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c
index 4d1a4cc8a0eb..104468bee53b 100644
--- a/sys/netinet/tcp_stacks/rack.c
+++ b/sys/netinet/tcp_stacks/rack.c
@@ -12297,7 +12297,8 @@ again:
* If sack_rxmit is true we are retransmitting from the scoreboard
* in which case len is already set.
*/
- if ((sack_rxmit == 0) && TCPS_HAVEESTABLISHED(tp->t_state)) {
+ if ((sack_rxmit == 0) &&
+ (TCPS_HAVEESTABLISHED(tp->t_state) || IS_FASTOPEN(tp->t_flags))) {
uint32_t avail;
avail = sbavail(sb);
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