From owner-svn-src-all@freebsd.org Sun Dec 18 13:45:06 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F4216C86C4A; Sun, 18 Dec 2016 13:45:05 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C350112EC; Sun, 18 Dec 2016 13:45:05 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id uBIDj4Et090747; Sun, 18 Dec 2016 13:45:04 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id uBIDj4nx090746; Sun, 18 Dec 2016 13:45:04 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201612181345.uBIDj4nx090746@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sun, 18 Dec 2016 13:45:04 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r310223 - stable/11/sys/netinet X-SVN-Group: stable-11 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Dec 2016 13:45:06 -0000 Author: tuexen Date: Sun Dec 18 13:45:04 2016 New Revision: 310223 URL: https://svnweb.freebsd.org/changeset/base/310223 Log: MFC r309744: Don't bundle a SACK chunk with a SHUTDOWN chunk if it is not required. Modified: stable/11/sys/netinet/sctp_indata.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/sctp_indata.c ============================================================================== --- stable/11/sys/netinet/sctp_indata.c Sun Dec 18 13:13:09 2016 (r310222) +++ stable/11/sys/netinet/sctp_indata.c Sun Dec 18 13:45:04 2016 (r310223) @@ -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