mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2025-08-06 07:17:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

virtio: net: Add missing virtqueue_kick in free_pkt

Browse Source 
Every virtqueue_add must eventually be followed by virtqueue_kick for to
properly notify the peer that new buffers have been put into the queue.

This is currently missing for virtio-net and may result in non-working
network when the host has depleted the rx buffers and waits for new
buffers. Depending on the host it may busy poll on the virtio queue or
wait for the kick. Qemu does the latter and may break.

Signed-off-by: Christian Speich <c.speich@avm.de>
This commit is contained in:
Christian Speich 2025-07-24 14:29:59 +02:00 committed by Jerome Forissier
parent 3c1ac44caa
commit d1b4bfc984
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/virtio/virtio_net.c
View File

@ -128,6 +128,7 @@ static int virtio_net_free_pkt(struct udevice *dev, uchar *packet, int length)
/* Put the buffer back to the rx ring */
virtqueue_add(priv->rx_vq, sgs, 0, 1);
virtqueue_kick(priv->rx_vq);
return 0;
}