From owner-svn-src-all@FreeBSD.ORG Mon Mar 23 23:34:22 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 521DE883; Mon, 23 Mar 2015 23:34:22 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::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 3D3D5F63; Mon, 23 Mar 2015 23:34:22 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t2NNYMnk073338; Mon, 23 Mar 2015 23:34:22 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t2NNYMt8073337; Mon, 23 Mar 2015 23:34:22 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201503232334.t2NNYMt8073337@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Mon, 23 Mar 2015 23:34:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r280404 - head/sys/netinet X-SVN-Group: head 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: 2.1.18-1 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: Mon, 23 Mar 2015 23:34:22 -0000 Author: tuexen Date: Mon Mar 23 23:34:21 2015 New Revision: 280404 URL: https://svnweb.freebsd.org/changeset/base/280404 Log: When an ICMP message is received and the MTU shrinks, only mark outstanding chunks for retransmissions. MFC after: 3 days Modified: head/sys/netinet/sctp_usrreq.c Modified: head/sys/netinet/sctp_usrreq.c ============================================================================== --- head/sys/netinet/sctp_usrreq.c Mon Mar 23 23:06:32 2015 (r280403) +++ head/sys/netinet/sctp_usrreq.c Mon Mar 23 23:34:21 2015 (r280404) @@ -125,21 +125,19 @@ sctp_pathmtu_adjustment(struct sctp_tcb if (chk->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_decrease(chk); sctp_total_flight_decrease(stcb, chk); - } - if (chk->sent != SCTP_DATAGRAM_RESEND) { + chk->sent = SCTP_DATAGRAM_RESEND; sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); + chk->rec.data.doing_fast_retransmit = 0; + if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { + sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU, + chk->whoTo->flight_size, + chk->book_size, + (uintptr_t) chk->whoTo, + chk->rec.data.TSN_seq); + } + /* Clear any time so NO RTT is being done */ + chk->do_rtt = 0; } - chk->sent = SCTP_DATAGRAM_RESEND; - chk->rec.data.doing_fast_retransmit = 0; - if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { - sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU, - chk->whoTo->flight_size, - chk->book_size, - (uintptr_t) chk->whoTo, - chk->rec.data.TSN_seq); - } - /* Clear any time so NO RTT is being done */ - chk->do_rtt = 0; } } }