[v1] virtio,pc,pci: features, cleanups, fixes

[PULL 01/51] virtio_net: Modify virtio_net_get_config to early return

Michael S. Tsirkin posted 51 patches 2 years, 11 months ago

Diff against v1 v1 v1 v1 v1 v1 v1 v2 v4
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Maintainers: Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, "Daniel P. Berrangé" <berrange@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>, Richard Henderson <richard.henderson@linaro.org>, Gerd Hoffmann <kraxel@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Yanan Wang <wangyanan55@huawei.com>, BALATON Zoltan <balaton@eik.bme.hu>, Stefano Stabellini <sstabellini@kernel.org>, Anthony Perard <anthony.perard@citrix.com>, Paul Durrant <paul@xen.org>, John Snow <jsnow@redhat.com>, Alberto Garcia <berto@igalia.com>, Corey Minyard <minyard@acm.org>, "Hervé Poussineau" <hpoussin@reactos.org>, Aurelien Jarno <aurelien@aurel32.net>, Pavel Pisa <pisa@cmp.felk.cvut.cz>, Vikram Garhwal <fnu.vikram@xilinx.com>, Jason Wang <jasowang@redhat.com>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, Stefan Weil <sw@weilnetz.de>, Jiri Pirko <jiri@resnulli.us>, Sven Schnelle <svens@stackframe.org>, Keith Busch <kbusch@kernel.org>, Klaus Jensen <its@irrelevant.dk>, Huacai Chen <chenhuacai@kernel.org>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Helge Deller <deller@gmx.de>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Yoshinori Sato <ysato@users.sourceforge.jp>, Magnus Damm <magnus.damm@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Daniel Henrique Barboza <danielhb413@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>, Yuval Shaia <yuval.shaia.ml@gmail.com>, Matthew Rosato <mjrosato@linux.ibm.com>, Eric Farman <farman@linux.ibm.com>, Thomas Huth <thuth@redhat.com>, Halil Pasic <pasic@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Fam Zheng <fam@euphon.net>, Alex Williamson <alex.williamson@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Viresh Kumar <viresh.kumar@linaro.org>, "Gonglei (Arei)" <arei.gonglei@huawei.com>, Beniamino Galvani <b.galvani@gmail.com>, Laurent Vivier <laurent@vivier.eu>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Ben Widawsky <ben.widawsky@intel.com>, Jonathan Cameron <jonathan.cameron@huawei.com>, Alistair Francis <Alistair.Francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Palmer Dabbelt <palmer@dabbelt.com>, Xiaojuan Yang <yangxiaojuan@loongson.cn>, Song Gao <gaosong@loongson.cn>, Francisco Iglesias <francisco.iglesias@amd.com>, Andrey Smirnov <andrew.smirnov@gmail.com>, Paul Burton <paulburton@kernel.org>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Elena Ufimtseva <elena.ufimtseva@oracle.com>, Jagannathan Raman <jag.raman@oracle.com>, John G Johnson <john.g.johnson@oracle.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Riku Voipio <riku.voipio@iki.fi>, Michael Roth <michael.roth@amd.com>, Konstantin Kostiuk <kkostiuk@redhat.com>, Taylor Simpson <tsimpson@quicinc.com>, Alexander Bulekov <alxndr@bu.edu>, Bandan Das <bsd@redhat.com>, Darren Kenny <darren.kenny@oracle.com>, Qiuhao Li <Qiuhao.Li@outlook.com>

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[PULL 01/51] virtio_net: Modify virtio_net_get_config to early return

Posted by Michael S. Tsirkin 2 years, 11 months ago

From: Eugenio Pérez <eperezma@redhat.com>

Next patches introduce more code on vhost-vdpa branch, with already have
too much indentation.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221221115015.1400889-2-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/net/virtio-net.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 9cbdfa5547..b30038d130 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -168,20 +168,22 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
     if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_VHOST_VDPA) {
         ret = vhost_net_get_config(get_vhost_net(nc->peer), (uint8_t *)&netcfg,
                                    n->config_size);
-        if (ret != -1) {
-            /*
-             * Some NIC/kernel combinations present 0 as the mac address.  As
-             * that is not a legal address, try to proceed with the
-             * address from the QEMU command line in the hope that the
-             * address has been configured correctly elsewhere - just not
-             * reported by the device.
-             */
-            if (memcmp(&netcfg.mac, &zero, sizeof(zero)) == 0) {
-                info_report("Zero hardware mac address detected. Ignoring.");
-                memcpy(netcfg.mac, n->mac, ETH_ALEN);
-            }
-            memcpy(config, &netcfg, n->config_size);
+        if (ret == -1) {
+            return;
         }
+
+        /*
+         * Some NIC/kernel combinations present 0 as the mac address.  As that
+         * is not a legal address, try to proceed with the address from the
+         * QEMU command line in the hope that the address has been configured
+         * correctly elsewhere - just not reported by the device.
+         */
+        if (memcmp(&netcfg.mac, &zero, sizeof(zero)) == 0) {
+            info_report("Zero hardware mac address detected. Ignoring.");
+            memcpy(netcfg.mac, n->mac, ETH_ALEN);
+        }
+
+        memcpy(config, &netcfg, n->config_size);
     }
 }
 
-- 
MST