From owner-svn-src-head@freebsd.org Fri Nov 30 07:11:01 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DC244115AEC9; Fri, 30 Nov 2018 07:11:01 +0000 (UTC) (envelope-from arybchik@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 23C69728CA; Fri, 30 Nov 2018 07:11:01 +0000 (UTC) (envelope-from arybchik@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 mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 53215252C6; Fri, 30 Nov 2018 07:10:55 +0000 (UTC) (envelope-from arybchik@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wAU7AtnO084648; Fri, 30 Nov 2018 07:10:55 GMT (envelope-from arybchik@FreeBSD.org) Received: (from arybchik@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wAU7At8p084647; Fri, 30 Nov 2018 07:10:55 GMT (envelope-from arybchik@FreeBSD.org) Message-Id: <201811300710.wAU7At8p084647@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: arybchik set sender to arybchik@FreeBSD.org using -f From: Andrew Rybchenko Date: Fri, 30 Nov 2018 07:10:55 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341326 - head/sys/dev/sfxge/common X-SVN-Group: head X-SVN-Commit-Author: arybchik X-SVN-Commit-Paths: head/sys/dev/sfxge/common X-SVN-Commit-Revision: 341326 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 23C69728CA X-Spamd-Result: default: False [0.50 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_SPAM_MEDIUM(0.26)[0.256,0]; NEURAL_HAM_SHORT(-0.06)[-0.063,0]; NEURAL_SPAM_LONG(0.31)[0.307,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Nov 2018 07:11:02 -0000 Author: arybchik Date: Fri Nov 30 07:10:54 2018 New Revision: 341326 URL: https://svnweb.freebsd.org/changeset/base/341326 Log: sfxge(4): ensure EvQ poll stops when abort is requested If an event handler requested an abort, only the inner loop was guarenteed to be broken out of - the outer loop could continue if total == batch. Fix this by poisoning batch to ensure it is different to total. Submitted by: Mark Spender Sponsored by: Solarflare Communications, Inc. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D18287 Modified: head/sys/dev/sfxge/common/efx_ev.c Modified: head/sys/dev/sfxge/common/efx_ev.c ============================================================================== --- head/sys/dev/sfxge/common/efx_ev.c Fri Nov 30 07:10:43 2018 (r341325) +++ head/sys/dev/sfxge/common/efx_ev.c Fri Nov 30 07:10:54 2018 (r341326) @@ -509,6 +509,14 @@ efx_ev_qpoll( if (should_abort) { /* Ignore subsequent events */ total = index + 1; + + /* + * Poison batch to ensure the outer + * loop is broken out of. + */ + EFSYS_ASSERT(batch <= EFX_EV_BATCH); + batch += (EFX_EV_BATCH << 1); + EFSYS_ASSERT(total != batch); break; } }