From patchwork Wed Mar 23 10:12:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cao jin X-Patchwork-Id: 8648551 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E0E8DC0553 for ; Wed, 23 Mar 2016 10:17:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 853E5201FA for ; Wed, 23 Mar 2016 10:17:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6219C203AA for ; Wed, 23 Mar 2016 10:17:51 +0000 (UTC) Received: from localhost ([::1]:42380 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aifrK-0006zg-5m for patchwork-qemu-devel@patchwork.kernel.org; Wed, 23 Mar 2016 06:17:50 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33236) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aifk7-0002kt-Jc for qemu-devel@nongnu.org; Wed, 23 Mar 2016 06:10:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aifk6-0003D6-KC for qemu-devel@nongnu.org; Wed, 23 Mar 2016 06:10:23 -0400 Received: from [59.151.112.132] (port=40160 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aifk6-00038w-2A for qemu-devel@nongnu.org; Wed, 23 Mar 2016 06:10:22 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="4887727" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 23 Mar 2016 18:10:21 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id C0764408D260; Wed, 23 Mar 2016 18:10:15 +0800 (CST) Received: from G08FNSTD140223.g08.fujitsu.local (10.167.226.69) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Wed, 23 Mar 2016 18:10:15 +0800 From: Cao jin To: Date: Wed, 23 Mar 2016 18:12:00 +0800 Message-ID: <1458727927-15082-6-git-send-email-caoj.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1458727927-15082-1-git-send-email-caoj.fnst@cn.fujitsu.com> References: <1458727927-15082-1-git-send-email-caoj.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.69] X-yoursite-MailScanner-ID: C0764408D260.AA379 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Cc: chen.fan.fnst@cn.fujitsu.com, izumi.taku@jp.fujitsu.com, alex.williamson@redhat.com, mst@redhat.com Subject: [Qemu-devel] [patch v5 05/12] vfio: refine function vfio_pci_host_match X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Chen Fan Signed-off-by: Chen Fan --- hw/vfio/pci.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 0516d94..5b23a86 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2060,14 +2060,27 @@ static void vfio_pci_post_reset(VFIOPCIDevice *vdev) vfio_intx_enable(vdev); } +static int vfio_pci_name_to_addr(const char *name, PCIHostDeviceAddress *addr) +{ + if (strlen(name) != 12 || + sscanf(name, "%04x:%02x:%02x.%1x", &addr->domain, + &addr->bus, &addr->slot, &addr->function) != 4) { + return -EINVAL; + } + + return 0; +} + static bool vfio_pci_host_match(PCIHostDeviceAddress *addr, const char *name) { - char tmp[13]; + PCIHostDeviceAddress tmp; - sprintf(tmp, "%04x:%02x:%02x.%1x", addr->domain, - addr->bus, addr->slot, addr->function); + if (vfio_pci_name_to_addr(name, &tmp)) { + return false; + } - return (strcmp(tmp, name) == 0); + return (tmp.domain == addr->domain && tmp.bus == addr->bus && + tmp.slot == addr->slot && tmp.function == addr->function); } static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single)