[Qemu-devel] [PATCH] net: set endianness on all backend devices

[Laurent Vivier <lvivier@redhat.com>]

commit 5be7d9f1b1452613b95c6ba70b8d7ad3d0797991
       vhost-net: tell tap backend about the vnet endianness

makes vhost net to set the endianness of the device, but only for
the first device.

In case of multiqueue, we have multiple devices... This patch sets the
endianness for all the devices of the interface.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 hw/net/vhost_net.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 318c3e6..10e233a 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -300,21 +300,19 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs,
     BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(dev)));
     VirtioBusState *vbus = VIRTIO_BUS(qbus);
     VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(vbus);
-    int r, e, i;
+    int r, e, i, j;
 
     if (!k->set_guest_notifiers) {
         error_report("binding does not support guest notifiers");
-        r = -ENOSYS;
-        goto err;
+        return -ENOSYS;
     }
 
-    r = vhost_net_set_vnet_endian(dev, ncs[0].peer, true);
-    if (r < 0) {
-        goto err;
-    }
-
-    for (i = 0; i < total_queues; i++) {
-        vhost_net_set_vq_index(get_vhost_net(ncs[i].peer), i * 2);
+    for (j = 0; j < total_queues; j++) {
+        r = vhost_net_set_vnet_endian(dev, ncs[j].peer, true);
+        if (r < 0) {
+            goto err_endian;
+        }
+        vhost_net_set_vq_index(get_vhost_net(ncs[j].peer), j * 2);
     }
 
     r = k->set_guest_notifiers(qbus->parent, total_queues * 2, true);
@@ -343,8 +341,9 @@ err_start:
         fflush(stderr);
     }
 err_endian:
-    vhost_net_set_vnet_endian(dev, ncs[0].peer, false);
-err:
+    while (--j >= 0) {
+        vhost_net_set_vnet_endian(dev, ncs[j].peer, false);
+    }
     return r;
 }
 
-- 
1.8.3.1