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virtio-net: don't let virtio core to validate used length 

For RX virtuqueue, the used length is validated in all the three paths
(big, small and mergeable). For control vq, we never tries to use used
length. So this patch forbids the core to validate the used length.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20211027022107.14357-3-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang 2021-10-27 10:21:05 +08:00 committed by Michael S. Tsirkin
parent 939779f515
commit 816625c136
1 changed files with 1 additions and 0 deletions
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drivers/net/virtio_net.c
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@ -3385,6 +3385,7 @@ static struct virtio_driver virtio_net_driver = {
.feature_table_size = ARRAY_SIZE(features),
.feature_table_legacy = features_legacy,
.feature_table_size_legacy = ARRAY_SIZE(features_legacy),
.suppress_used_validation = true,
.driver.name = KBUILD_MODNAME,
.driver.owner = THIS_MODULE,
.id_table = id_table,