From owner-svn-src-all@freebsd.org Tue Nov 27 14:15:12 2018 Return-Path: Delivered-To: svn-src-all@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 4AE11114DA6B; Tue, 27 Nov 2018 14:15:12 +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 E59E67CD1C; Tue, 27 Nov 2018 14:15:11 +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 1BFBB1C608; Tue, 27 Nov 2018 14:15:09 +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 wAREF8A7060912; Tue, 27 Nov 2018 14:15:08 GMT (envelope-from arybchik@FreeBSD.org) Received: (from arybchik@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wAREF8r3060911; Tue, 27 Nov 2018 14:15:08 GMT (envelope-from arybchik@FreeBSD.org) Message-Id: <201811271415.wAREF8r3060911@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: arybchik set sender to arybchik@FreeBSD.org using -f From: Andrew Rybchenko Date: Tue, 27 Nov 2018 14:15:08 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341060 - 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: 341060 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: E59E67CD1C X-Spamd-Result: default: False [1.66 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_SPAM_LONG(0.47)[0.465,0]; NEURAL_SPAM_MEDIUM(0.64)[0.643,0]; NEURAL_SPAM_SHORT(0.56)[0.556,0] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 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: Tue, 27 Nov 2018 14:15:12 -0000 Author: arybchik Date: Tue Nov 27 14:15:08 2018 New Revision: 341060 URL: https://svnweb.freebsd.org/changeset/base/341060 Log: sfxge(4): improve robustness of MAC stats get via MCDI Previously the code relied on the callers of efx_mcdi_mac_stats to provide a DMA buffer or NULL depending on the action. Fix this so that the DMA buffer is only passed in the request when needed, and that an error is reported for a missing DMA buffer. Submitted by: Andy Moreton Sponsored by: Solarflare Communications, Inc. Differential Revision: https://reviews.freebsd.org/D18174 Modified: head/sys/dev/sfxge/common/efx_mcdi.c Modified: head/sys/dev/sfxge/common/efx_mcdi.c ============================================================================== --- head/sys/dev/sfxge/common/efx_mcdi.c Tue Nov 27 14:14:57 2018 (r341059) +++ head/sys/dev/sfxge/common/efx_mcdi.c Tue Nov 27 14:15:08 2018 (r341060) @@ -1843,9 +1843,15 @@ efx_mcdi_mac_stats( MAC_STATS_IN_PERIODIC_NOEVENT, !events, MAC_STATS_IN_PERIOD_MS, (enable | events) ? period_ms : 0); - if (esmp != NULL) { + if (enable || events || upload) { uint32_t bytes = MC_CMD_MAC_NSTATS * sizeof (uint64_t); + /* Periodic stats or stats upload require a DMA buffer */ + if (esmp == NULL) { + rc = EINVAL; + goto fail1; + } + EFX_STATIC_ASSERT(MC_CMD_MAC_NSTATS * sizeof (uint64_t) <= EFX_MAC_STATS_SIZE); @@ -1856,8 +1862,6 @@ efx_mcdi_mac_stats( MCDI_IN_SET_DWORD(req, MAC_STATS_IN_DMA_ADDR_HI, EFSYS_MEM_ADDR(esmp) >> 32); MCDI_IN_SET_DWORD(req, MAC_STATS_IN_DMA_LEN, bytes); - } else { - EFSYS_ASSERT(!upload && !enable && !events); } /* @@ -1875,12 +1879,14 @@ efx_mcdi_mac_stats( if ((req.emr_rc != ENOENT) || (enp->en_rx_qcount + enp->en_tx_qcount != 0)) { rc = req.emr_rc; - goto fail1; + goto fail2; } } return (0); +fail2: + EFSYS_PROBE(fail2); fail1: EFSYS_PROBE1(fail1, efx_rc_t, rc);