virtio_net: Don't enable NAPI when interface is down

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Commit 4e09ff5362 ("virtio-net: disable NAPI only when enabled during
XDP set") tried to fix inappropriate NAPI enabling/disabling when
!netif_running(), but was not complete.

On error path virtio_net could enable NAPI even when !netif_running().
This can cause enabling NAPI twice on virtnet_open(), which would
trigger BUG_ON() in napi_enable().

Fixes: 4941d472bf ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Toshiaki Makita 2019-01-29 09:45:53 +09:00 • committed by David S. Miller

parent 41ef81be79

commit 8be4d9a492

1 changed files with 4 additions and 2 deletions

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6

drivers/net/virtio_net.c

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