From patchwork Fri Sep 23 15:50:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: luzhipeng X-Patchwork-Id: 12986727 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 17572ECAAD8 for ; Fri, 23 Sep 2022 15:56:52 +0000 (UTC) Received: from localhost ([::1]:44402 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1obl2p-0004ef-OQ for qemu-devel@archiver.kernel.org; Fri, 23 Sep 2022 11:56:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57174) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1obkxf-0006CG-KK for qemu-devel@nongnu.org; Fri, 23 Sep 2022 11:51:31 -0400 Received: from [106.39.185.57] (port=43656 helo=smtp.cecloud.com) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1obkxS-0007UZ-NL for qemu-devel@nongnu.org; Fri, 23 Sep 2022 11:51:31 -0400 Received: from localhost (localhost [127.0.0.1]) by smtp.cecloud.com (Postfix) with ESMTP id 92B6CFC0204; Fri, 23 Sep 2022 23:51:09 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 0 Received: from localhost.localdomain (1.39.88.218.broad.cd.sc.dynamic.163data.com.cn [218.88.39.1]) by smtp.cecloud.com (postfix) whith ESMTP id P51403T281470656377200S1663948267784997_; Fri, 23 Sep 2022 23:51:09 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: luzhipeng@cestc.cn X-SENDER: luzhipeng@cestc.cn X-LOGIN-NAME: luzhipeng@cestc.cn X-FST-TO: qemu-devel@nongnu.org X-RCPT-COUNT: 3 X-SENDER-IP: 218.88.39.1 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: luzhipeng To: qemu-devel Cc: Jason Wang , lu zhipeng Subject: [PATCH] virtio: del net client if net_init_tap_one failed Date: Fri, 23 Sep 2022 23:50:46 +0800 Message-Id: <20220923155046.1571-1-luzhipeng@cestc.cn> X-Mailer: git-send-email 2.34.0.windows.1 MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 106.39.185.57 (failed) Received-SPF: pass client-ip=106.39.185.57; envelope-from=luzhipeng@cestc.cn; helo=smtp.cecloud.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: lu zhipeng If the net tap initializes successful, but failed during network card hot-plugging, the net-tap will remains, so cleanup. Signed-off-by: lu zhipeng --- net/tap.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/net/tap.c b/net/tap.c index b3ddfd4a74..e203d07a12 100644 --- a/net/tap.c +++ b/net/tap.c @@ -686,7 +686,7 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, tap_set_sndbuf(s->fd, tap, &err); if (err) { error_propagate(errp, err); - return; + goto failed; } if (tap->has_fd || tap->has_fds) { @@ -726,12 +726,12 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, } else { warn_report_err(err); } - return; + goto failed; } if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { error_setg_errno(errp, errno, "%s: Can't use file descriptor %d", name, fd); - return; + goto failed; } } else { vhostfd = open("/dev/vhost-net", O_RDWR); @@ -743,11 +743,11 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, warn_report("tap: open vhost char device failed: %s", strerror(errno)); } - return; + goto failed; } if (!g_unix_set_fd_nonblocking(vhostfd, true, NULL)) { error_setg_errno(errp, errno, "Failed to set FD nonblocking"); - return; + goto failed; } } options.opaque = (void *)(uintptr_t)vhostfd; @@ -760,11 +760,17 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, } else { warn_report(VHOST_NET_INIT_FAILED); } - return; + goto failed; } } else if (vhostfdname) { error_setg(errp, "vhostfd(s)= is not valid without vhost"); + goto failed; } + + return; + +failed: + qemu_del_net_client(&s->nc); } static int get_fds(char *str, char *fds[], int max)