From: Jason Wang Date: Wed, 27 Oct 2021 02:21:05 +0000 (+0800) Subject: virtio-net: don't let virtio core to validate used length X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=816625c13652cef5b2c49082d652875da6f2ad7a;p=linux.git 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 Link: https://lore.kernel.org/r/20211027022107.14357-3-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin --- diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 6d8c8745bf242..7c43bfc1ce444 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -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,