From patchwork Tue May 12 12:03:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 471296 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id A3CED140D16 for ; Tue, 12 May 2015 22:12:27 +1000 (AEST) Received: from localhost ([::1]:42642 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys92v-0005OE-E5 for incoming@patchwork.ozlabs.org; Tue, 12 May 2015 08:12:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53860) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys8uA-0007Uh-Pl for qemu-devel@nongnu.org; Tue, 12 May 2015 08:03:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ys8u1-00040B-Uk for qemu-devel@nongnu.org; Tue, 12 May 2015 08:03:22 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44605) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ys8u1-0003zb-NS for qemu-devel@nongnu.org; Tue, 12 May 2015 08:03:13 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 5B8B1BDD96 for ; Tue, 12 May 2015 12:03:13 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-129.ams2.redhat.com [10.36.116.129]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t4CC3AvX008776 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 12 May 2015 08:03:12 -0400 Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 05E2A304390E; Tue, 12 May 2015 14:03:07 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Tue, 12 May 2015 14:03:00 +0200 Message-Id: <1431432187-10993-9-git-send-email-armbru@redhat.com> In-Reply-To: <1431432187-10993-1-git-send-email-armbru@redhat.com> References: <1431432187-10993-1-git-send-email-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: stefanha@redhat.com Subject: [Qemu-devel] [PATCH 08/15] tap: Convert net_init_tap_one() to Error 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- net/tap.c | 70 ++++++++++++++++++++++++++++++++++----------------------------- 1 file changed, 38 insertions(+), 32 deletions(-) diff --git a/net/tap.c b/net/tap.c index d54222d..d1f5644 100644 --- a/net/tap.c +++ b/net/tap.c @@ -600,11 +600,11 @@ static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr, #define MAX_TAP_QUEUES 1024 -static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, - const char *model, const char *name, - const char *ifname, const char *script, - const char *downscript, const char *vhostfdname, - int vnet_hdr, int fd) +static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, + const char *model, const char *name, + const char *ifname, const char *script, + const char *downscript, const char *vhostfdname, + int vnet_hdr, int fd, Error **errp) { Error *err = NULL; TAPState *s = net_tap_fd_init(peer, model, name, fd, vnet_hdr); @@ -612,8 +612,8 @@ static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, tap_set_sndbuf(s->fd, tap, &err); if (err) { - error_report_err(err); - return -1; + error_propagate(errp, err); + return; } if (tap->has_fd || tap->has_fds) { @@ -644,30 +644,28 @@ static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, if (tap->has_vhostfd || tap->has_vhostfds) { vhostfd = monitor_fd_param(cur_mon, vhostfdname, &err); if (vhostfd == -1) { - error_report_err(err); - return -1; + error_propagate(errp, err); + return; } } else { vhostfd = open("/dev/vhost-net", O_RDWR); if (vhostfd < 0) { - error_report("tap: open vhost char device failed: %s", - strerror(errno)); - return -1; + error_setg_errno(errp, errno, + "tap: open vhost char device failed: %s"); + return; } } options.opaque = (void *)(uintptr_t)vhostfd; s->vhost_net = vhost_net_init(&options); if (!s->vhost_net) { - error_report("vhost-net requested but could not be initialized"); - return -1; + error_setg(errp, + "vhost-net requested but could not be initialized"); + return; } } else if (tap->has_vhostfd || tap->has_vhostfds) { - error_report("vhostfd= is not valid without vhost"); - return -1; + error_setg(errp, "vhostfd= is not valid without vhost"); } - - return 0; } static int get_fds(char *str, char *fds[], int max) @@ -741,9 +739,11 @@ int net_init_tap(const NetClientOptions *opts, const char *name, vnet_hdr = tap_probe_vnet_hdr(fd); - if (net_init_tap_one(tap, peer, "tap", name, NULL, - script, downscript, - vhostfdname, vnet_hdr, fd)) { + net_init_tap_one(tap, peer, "tap", name, NULL, + script, downscript, + vhostfdname, vnet_hdr, fd, &err); + if (err) { + error_report_err(err); return -1; } } else if (tap->has_fds) { @@ -786,10 +786,12 @@ int net_init_tap(const NetClientOptions *opts, const char *name, return -1; } - if (net_init_tap_one(tap, peer, "tap", name, ifname, - script, downscript, - tap->has_vhostfds ? vhost_fds[i] : NULL, - vnet_hdr, fd)) { + net_init_tap_one(tap, peer, "tap", name, ifname, + script, downscript, + tap->has_vhostfds ? vhost_fds[i] : NULL, + vnet_hdr, fd, &err); + if (err) { + error_report_err(err); return -1; } } @@ -810,9 +812,11 @@ int net_init_tap(const NetClientOptions *opts, const char *name, fcntl(fd, F_SETFL, O_NONBLOCK); vnet_hdr = tap_probe_vnet_hdr(fd); - if (net_init_tap_one(tap, peer, "bridge", name, ifname, - script, downscript, vhostfdname, - vnet_hdr, fd)) { + net_init_tap_one(tap, peer, "bridge", name, ifname, + script, downscript, vhostfdname, + vnet_hdr, fd, &err); + if (err) { + error_report_err(err); close(fd); return -1; } @@ -846,10 +850,12 @@ int net_init_tap(const NetClientOptions *opts, const char *name, } } - if (net_init_tap_one(tap, peer, "tap", name, ifname, - i >= 1 ? "no" : script, - i >= 1 ? "no" : downscript, - vhostfdname, vnet_hdr, fd)) { + net_init_tap_one(tap, peer, "tap", name, ifname, + i >= 1 ? "no" : script, + i >= 1 ? "no" : downscript, + vhostfdname, vnet_hdr, fd, &err); + if (err) { + error_report_err(err); close(fd); return -1; }