From patchwork Tue Jul 21 03:05:27 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Du, Fan" X-Patchwork-Id: 6832021 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 42F2E9F457 for ; Tue, 21 Jul 2015 03:07:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 670AB204E3 for ; Tue, 21 Jul 2015 03:07:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 31E7D204E7 for ; Tue, 21 Jul 2015 03:06:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754046AbbGUDGz (ORCPT ); Mon, 20 Jul 2015 23:06:55 -0400 Received: from mga09.intel.com ([134.134.136.24]:4868 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753031AbbGUDGx (ORCPT ); Mon, 20 Jul 2015 23:06:53 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP; 20 Jul 2015 20:06:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,512,1432623600"; d="scan'208";a="609780193" Received: from dufan-optiplex-9010.bj.intel.com ([10.238.155.102]) by orsmga003.jf.intel.com with ESMTP; 20 Jul 2015 20:06:40 -0700 From: Fan Du To: kvm@vger.kernel.org Cc: will.deacon@arm.com, marc.zyngier@arm.com, andre.przywara@arm.com, Fan Du Subject: [PATCH 1/2] kvmtool: Introduce downscript option for virtio-net Date: Tue, 21 Jul 2015 11:05:27 +0800 Message-Id: <1437447928-24286-2-git-send-email-fan.du@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1437447928-24286-1-git-send-email-fan.du@intel.com> References: <1437447928-24286-1-git-send-email-fan.du@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-8.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, 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 To detach tap device automatically from bridge when exiting, just like what the reverse of "script" does. Signed-off-by: Fan Du --- include/kvm/virtio-net.h | 1 + virtio/net.c | 50 +++++++++++++++++++++++++++++++++++++----------- 2 files changed, 40 insertions(+), 11 deletions(-) diff --git a/include/kvm/virtio-net.h b/include/kvm/virtio-net.h index f435cc3..d136a09 100644 --- a/include/kvm/virtio-net.h +++ b/include/kvm/virtio-net.h @@ -9,6 +9,7 @@ struct virtio_net_params { const char *guest_ip; const char *host_ip; const char *script; + const char *downscript; const char *trans; const char *tapif; char guest_mac[6]; diff --git a/virtio/net.c b/virtio/net.c index 4a6a855..55dd9d9 100644 --- a/virtio/net.c +++ b/virtio/net.c @@ -294,6 +294,26 @@ static int virtio_net_request_tap(struct net_dev *ndev, struct ifreq *ifr, return ret; } +static int virtio_net_exec_script(const char* script, char *tap_name) +{ + int ret; + int pid; + int status; + + pid = fork(); + if (pid == 0) { + execl(script, script, tap_name, NULL); + _exit(1); + } else { + waitpid(pid, &status, 0); + if (WIFEXITED(status) && WEXITSTATUS(status) != 0) { + pr_warning("Fail to setup tap by %s", script); + return -1; + } + } + return 0; +} + static bool virtio_net__tap_init(struct net_dev *ndev) { int sock = socket(AF_INET, SOCK_STREAM, 0); @@ -339,17 +359,8 @@ static bool virtio_net__tap_init(struct net_dev *ndev) } if (strcmp(params->script, "none")) { - pid = fork(); - if (pid == 0) { - execl(params->script, params->script, ndev->tap_name, NULL); - _exit(1); - } else { - waitpid(pid, &status, 0); - if (WIFEXITED(status) && WEXITSTATUS(status) != 0) { - pr_warning("Fail to setup tap by %s", params->script); - goto fail; - } - } + if(virtio_net_exec_script(params->script, ndev->tap_name) < 0) + goto fail; } else if (!skipconf) { memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, ndev->tap_name, sizeof(ndev->tap_name)); @@ -702,6 +713,8 @@ static int set_net_param(struct kvm *kvm, struct virtio_net_params *p, die("Unknown network mode %s, please use user, tap or none", kvm->cfg.network); } else if (strcmp(param, "script") == 0) { p->script = strdup(val); + } else if (strcmp(param, "downscript") == 0) { + p->downscript = strdup(val); } else if (strcmp(param, "guest_ip") == 0) { p->guest_ip = strdup(val); } else if (strcmp(param, "host_ip") == 0) { @@ -877,6 +890,21 @@ virtio_dev_init(virtio_net__init); int virtio_net__exit(struct kvm *kvm) { + int pid; + int status; + struct virtio_net_params *params; + struct net_dev *ndev; + struct list_head *ptr; + + list_for_each(ptr, &ndevs) { + ndev = list_entry(ptr, struct net_dev, list); + params = ndev->params; + /* Cleanup any tap device which attached to bridge */ + if (ndev->mode == NET_MODE_TAP && + strcmp(params->downscript, "none")) { + virtio_net_exec_script(params->downscript, ndev->tap_name); + } + } return 0; } virtio_dev_exit(virtio_net__exit);