git: 1abc27dd52e5 - main - tcp rack: simplify computation of rsm start and end
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Date: Tue, 02 Aug 2022 10:49:24 UTC
The branch main has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=1abc27dd52e5fd151472439004f20dc798887ae1 commit 1abc27dd52e5fd151472439004f20dc798887ae1 Author: Michael Tuexen <tuexen@FreeBSD.org> AuthorDate: 2022-08-02 10:45:56 +0000 Commit: Michael Tuexen <tuexen@FreeBSD.org> CommitDate: 2022-08-02 10:45:56 +0000 tcp rack: simplify computation of rsm start and end While there, also fix the setting of the SYN related flag. Reviewed by: rrs MFC after: 1 week Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D35862 --- sys/netinet/tcp_stacks/rack.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/sys/netinet/tcp_stacks/rack.c b/sys/netinet/tcp_stacks/rack.c index ce33f507bc1c..c3008b38dd4f 100644 --- a/sys/netinet/tcp_stacks/rack.c +++ b/sys/netinet/tcp_stacks/rack.c @@ -12610,14 +12610,11 @@ rack_init(struct tcpcb *tp) rsm->r_rtr_bytes = 0; if (tp->t_flags & TF_SENTFIN) rsm->r_flags |= RACK_HAS_FIN; - rsm->r_end = tp->snd_max; - if (tp->snd_una == tp->iss) { - /* The data space is one beyond snd_una */ + if ((tp->snd_una == tp->iss) && + !TCPS_HAVEESTABLISHED(tp->t_state)) rsm->r_flags |= RACK_HAS_SYN; - rsm->r_start = tp->iss; - rsm->r_end = rsm->r_start + (tp->snd_max - tp->snd_una); - } else - rsm->r_start = tp->snd_una; + rsm->r_start = tp->snd_una; + rsm->r_end = tp->snd_max; rsm->r_dupack = 0; if (rack->rc_inp->inp_socket->so_snd.sb_mb != NULL) { rsm->m = sbsndmbuf(&rack->rc_inp->inp_socket->so_snd, 0, &rsm->soff);