[PATCH V3 08/10] virtio-net: don't let virtio core to validate used length
From: Jason Wang <hidden>
Date: 2021-10-19 07:04:30
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Subsystem:
networking drivers, the rest, virtio net driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
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 <redacted> --- drivers/net/virtio_net.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 79bd2585ec6b..6a8b52aed05f 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c@@ -3384,6 +3384,7 @@ 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,
--
2.25.1
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