Date: Fri, 9 Dec 2016 17:58:07 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r309744 - head/sys/netinet Message-ID: <201612091758.uB9Hw7lK087325@repo.freebsd.org>
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Author: tuexen Date: Fri Dec 9 17:58:07 2016 New Revision: 309744 URL: https://svnweb.freebsd.org/changeset/base/309744 Log: Don't bundle a SACK chunk with a SHUTDOWN chunk if it is not required. MFC after: 1 week Modified: head/sys/netinet/sctp_indata.c Modified: head/sys/netinet/sctp_indata.c ============================================================================== --- head/sys/netinet/sctp_indata.c Fri Dec 9 17:57:17 2016 (r309743) +++ head/sys/netinet/sctp_indata.c Fri Dec 9 17:58:07 2016 (r309744) @@ -2437,13 +2437,17 @@ sctp_sack_check(struct sctp_tcb *stcb, i { struct sctp_association *asoc; uint32_t highest_tsn; + int is_a_gap; + sctp_slide_mapping_arrays(stcb); asoc = &stcb->asoc; if (SCTP_TSN_GT(asoc->highest_tsn_inside_nr_map, asoc->highest_tsn_inside_map)) { highest_tsn = asoc->highest_tsn_inside_nr_map; } else { highest_tsn = asoc->highest_tsn_inside_map; } + /* Is there a gap now? */ + is_a_gap = SCTP_TSN_GT(highest_tsn, stcb->asoc.cumulative_tsn); /* * Now we need to see if we need to queue a sack or just start the @@ -2462,13 +2466,10 @@ sctp_sack_check(struct sctp_tcb *stcb, i } sctp_send_shutdown(stcb, ((stcb->asoc.alternate) ? stcb->asoc.alternate : stcb->asoc.primary_destination)); - sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); + if (is_a_gap) { + sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); + } } else { - int is_a_gap; - - /* is there a gap now ? */ - is_a_gap = SCTP_TSN_GT(highest_tsn, stcb->asoc.cumulative_tsn); - /* * CMT DAC algorithm: increase number of packets received * since last ack
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