From nobody Sun Feb 8 12:53:12 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1519208595158854.3123902160802; Wed, 21 Feb 2018 02:23:15 -0800 (PST) Received: from localhost ([::1]:59908 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eoRYN-00080K-Oc for importer@patchew.org; Wed, 21 Feb 2018 05:23:11 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53752) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eoRUC-0004hn-0L for qemu-devel@nongnu.org; Wed, 21 Feb 2018 05:18:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eoRU7-0001V6-5A for qemu-devel@nongnu.org; Wed, 21 Feb 2018 05:18:51 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38550 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eoRU7-0001UW-1s for qemu-devel@nongnu.org; Wed, 21 Feb 2018 05:18:47 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5357F40FB630 for ; Wed, 21 Feb 2018 10:18:46 +0000 (UTC) Received: from thh440s.redhat.com (ovpn-116-123.ams2.redhat.com [10.36.116.123]) by smtp.corp.redhat.com (Postfix) with ESMTP id BEA742024CA7; Wed, 21 Feb 2018 10:18:44 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Jason Wang , "Dr. David Alan Gilbert" Date: Wed, 21 Feb 2018 11:18:31 +0100 Message-Id: <1519208316-18812-3-git-send-email-thuth@redhat.com> In-Reply-To: <1519208316-18812-1-git-send-email-thuth@redhat.com> References: <1519208316-18812-1-git-send-email-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 21 Feb 2018 10:18:46 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 21 Feb 2018 10:18:46 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'thuth@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v3 2/7] net: List available netdevs with "-netdev help" X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Other options like "-chardev" or "-device" feature a nice help text with the available devices when being called with "help" or "?". Since it is quite useful, especially if you want to see which network backends have been compiled into the QEMU binary, let's provide such a help text for "-netdev", too. Reviewed-by: Paolo Bonzini Reviewed-by: Eric Blake Signed-off-by: Thomas Huth --- net/net.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/net/net.c b/net/net.c index e213a61..cf07e15 100644 --- a/net/net.c +++ b/net/net.c @@ -1086,6 +1086,38 @@ static int net_client_init1(const void *object, bool= is_netdev, Error **errp) return 0; } =20 +static void show_netdevs(void) +{ + int idx; + const char *available_netdevs[] =3D { + "socket", + "hubport", + "tap", +#ifdef CONFIG_SLIRP + "user", +#endif +#ifdef CONFIG_L2TPV3 + "l2tpv3", +#endif +#ifdef CONFIG_VDE + "vde", +#endif +#ifdef CONFIG_NET_BRIDGE + "bridge", +#endif +#ifdef CONFIG_NETMAP + "netmap", +#endif +#ifdef CONFIG_POSIX + "vhost-user", +#endif + }; + + printf("Available netdev backend types:\n"); + for (idx =3D 0; idx < ARRAY_SIZE(available_netdevs); idx++) { + puts(available_netdevs[idx]); + } +} =20 int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) { @@ -1094,7 +1126,10 @@ int net_client_init(QemuOpts *opts, bool is_netdev, = Error **errp) int ret =3D -1; Visitor *v =3D opts_visitor_new(opts); =20 - { + if (is_netdev && is_help_option(qemu_opt_get(opts, "type"))) { + show_netdevs(); + exit(0); + } else { /* Parse convenience option format ip6-net=3Dfec0::0[/64] */ const char *ip6_net =3D qemu_opt_get(opts, "ipv6-net"); =20 --=20 1.8.3.1