From patchwork Wed Jan 27 08:29:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhanghailiang X-Patchwork-Id: 8131131 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 53C27BEEE5 for ; Wed, 27 Jan 2016 08:35:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A3FDC20295 for ; Wed, 27 Jan 2016 08:35:38 +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 D9A4C2025B for ; Wed, 27 Jan 2016 08:35:37 +0000 (UTC) Received: from localhost ([::1]:48573 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aOLZg-0006sp-Nq for patchwork-qemu-devel@patchwork.kernel.org; Wed, 27 Jan 2016 03:35:37 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aOLZY-0006o4-JE for qemu-devel@nongnu.org; Wed, 27 Jan 2016 03:35:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aOLZV-0007YO-ED for qemu-devel@nongnu.org; Wed, 27 Jan 2016 03:35:28 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:23634) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aOLZU-0007XR-MK for qemu-devel@nongnu.org; Wed, 27 Jan 2016 03:35:25 -0500 Received: from 172.24.1.47 (EHLO szxeml426-hub.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DDT69761; Wed, 27 Jan 2016 16:30:10 +0800 (CST) Received: from localhost (10.177.24.212) by szxeml426-hub.china.huawei.com (10.82.67.181) with Microsoft SMTP Server id 14.3.235.1; Wed, 27 Jan 2016 16:29:59 +0800 From: zhanghailiang To: Date: Wed, 27 Jan 2016 16:29:38 +0800 Message-ID: <1453883380-10532-4-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1453883380-10532-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1453883380-10532-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.56A8807F.0014, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 396b1def9e4c1def45480e00042a2243 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 58.251.152.64 Cc: jasowang@redhat.com, zhanghailiang , zhangchen.fnst@cn.fujitsu.com, hongyang.yang@easystack.cn Subject: [Qemu-devel] [PATCH RFC v2 3/5] net/filter: Introduce a helper to add a filter to the netdev 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 We add a new helper function netdev_add_filter(), this function can help adding a filter object to a netdev. Besides, we add a is_default member for struct NetFilterState to indicate whether the filter is default or not. Signed-off-by: zhanghailiang --- v2: -Re-implement netdev_add_filter() by re-using object_create() (Jason's suggestion) --- include/net/filter.h | 7 +++++ net/filter.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 87 insertions(+) diff --git a/include/net/filter.h b/include/net/filter.h index af3c53c..ee1c024 100644 --- a/include/net/filter.h +++ b/include/net/filter.h @@ -55,6 +55,7 @@ struct NetFilterState { char *netdev_id; NetClientState *netdev; NetFilterDirection direction; + bool is_default; bool enabled; QTAILQ_ENTRY(NetFilterState) next; }; @@ -74,4 +75,10 @@ ssize_t qemu_netfilter_pass_to_next(NetClientState *sender, int iovcnt, void *opaque); +void netdev_add_filter(const char *netdev_id, + const char *filter_type, + const char *id, + bool is_default, + Error **errp); + #endif /* QEMU_NET_FILTER_H */ diff --git a/net/filter.c b/net/filter.c index d08a2be..dc7aa9b 100644 --- a/net/filter.c +++ b/net/filter.c @@ -214,6 +214,86 @@ static void netfilter_complete(UserCreatable *uc, Error **errp) QTAILQ_INSERT_TAIL(&nf->netdev->filters, nf, next); } +QemuOptsList qemu_filter_opts = { + .name = "default-filter", + .head = QTAILQ_HEAD_INITIALIZER(qemu_filter_opts.head), + .desc = { + { + .name = "qom-type", + .type = QEMU_OPT_STRING, + },{ + .name = "id", + .type = QEMU_OPT_STRING, + },{ + .name = "netdev", + .type = QEMU_OPT_STRING, + },{ + .name = "status", + .type = QEMU_OPT_STRING, + }, + { /* end of list */ } + }, +}; + +static void filter_set_default_flag(const char *id, + bool is_default, + Error **errp) +{ + Object *obj, *container; + NetFilterState *nf; + + container = object_get_objects_root(); + obj = object_resolve_path_component(container, id); + if (!obj) { + error_setg(errp, "object id not found"); + return; + } + nf = NETFILTER(obj); + nf->is_default = is_default; +} + +void netdev_add_filter(const char *netdev_id, + const char *filter_type, + const char *id, + bool is_default, + Error **errp) +{ + NetClientState *nc = qemu_find_netdev(netdev_id); + char *optarg; + QemuOpts *opts = NULL; + Error *err = NULL; + + /* FIXME: Not support multiple queues */ + if (!nc || nc->queue_index > 1) { + return; + } + /* Not support vhost-net */ + if (get_vhost_net(nc)) { + return; + } + + optarg = g_strdup_printf("qom-type=%s,id=%s,netdev=%s,status=%s", + filter_type, id, netdev_id, is_default ? "disable" : "enable"); + opts = qemu_opts_parse_noisily(&qemu_filter_opts, + optarg, false); + if (!opts) { + error_report("Failed to parse param '%s'", optarg); + exit(1); + } + g_free(optarg); + if (object_create(NULL, opts, &err) < 0) { + error_report("Failed to create object"); + goto out_clean; + } + filter_set_default_flag(id, is_default, &err); + +out_clean: + qemu_opts_del(opts); + if (err) { + error_propagate(errp, err); + } +} + static void netfilter_finalize(Object *obj) { NetFilterState *nf = NETFILTER(obj);