From e4166625edfd2d808ddda00c7e7e901f4f3b8cc0 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Tue, 21 May 2013 20:03:58 +0000 Subject: [PATCH] virtio_net: enable napi for all possible queues during open Commit 55257d72bd1c51f25106350f4983ec19f62ed1fa (virtio-net: fill only rx queues which are being used) only does the napi enabling during open for curr_queue_pairs. This will break multiqueue receiving since napi of new queues were still disabled after changing the number of queues. This patch fixes this by enabling napi for all possible queues during open. Cc: Sasha Levin Signed-off-by: Jason Wang Acked-by: Rusty Russell Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- drivers/net/virtio_net.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 655bb25eed2b..c9e00387d999 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -636,10 +636,11 @@ static int virtnet_open(struct net_device *dev) struct virtnet_info *vi = netdev_priv(dev); int i; - for (i = 0; i < vi->curr_queue_pairs; i++) { - /* Make sure we have some buffers: if oom use wq. */ - if (!try_fill_recv(&vi->rq[i], GFP_KERNEL)) - schedule_delayed_work(&vi->refill, 0); + for (i = 0; i < vi->max_queue_pairs; i++) { + if (i < vi->curr_queue_pairs) + /* Make sure we have some buffers: if oom use wq. */ + if (!try_fill_recv(&vi->rq[i], GFP_KERNEL)) + schedule_delayed_work(&vi->refill, 0); virtnet_napi_enable(&vi->rq[i]); } -- 2.20.1