The branch stable/13 has been updated by rscheff:
URL:
https://cgit.FreeBSD.org/src/commit/?id=25fb4c363b299c26c35158fa059379af4a007253
commit 25fb4c363b299c26c35158fa059379af4a007253
Author: Richard Scheffenegger <rsch...@freebsd.org>
AuthorDate: 2021-02-25 17:36:49 +0000
Commit: Richard Scheffenegger <rsch...@freebsd.org>
CommitDate: 2021-02-28 08:09:33 +0000
PRR: Avoid accounting left-edge twice in partial ACK.
Reviewed By: #transport, kbowling
MFC after: 3 days
Sponsored by: NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D28819
(cherry picked from commit 31d7a27c6e88c3d5bd0907774ec70176a92da5bb)
---
sys/netinet/tcp_input.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
index 96c594a4c7cd..e096f2a13679 100644
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -3932,9 +3932,7 @@ tcp_prr_partialack(struct tcpcb *tp, struct tcphdr *th)
* (del_data) and an estimate of how many bytes are in the
* network.
*/
- if (SEQ_GEQ(th->th_ack, tp->snd_una))
- del_data = BYTES_THIS_ACK(tp, th);
- del_data += tp->sackhint.delivered_data;
+ del_data = tp->sackhint.delivered_data;
if (V_tcp_do_rfc6675_pipe)
pipe = tcp_compute_pipe(tp);
else
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