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authorJason Wang <jasowang@redhat.com>2016-12-23 22:37:24 +0800
committerDavid S. Miller <davem@davemloft.net>2016-12-23 13:48:53 -0500
commit73b62bd085f4737679ea9afc7867fa5f99ba7d1b (patch)
tree01bf204163ac9b4654963d8a95186a5f52750bc6 /drivers/net
parentd3a51d6cbc8a31bf924be1fe116e461138b1cddc (diff)
downloadlinux-73b62bd085f4737679ea9afc7867fa5f99ba7d1b.tar.bz2
virtio-net: remove the warning before XDP linearizing
Since we use EWMA to estimate the size of rx buffer. When rx buffer size is underestimated, it's usual to have a packet with more than one buffers. Consider this is not a bug, remove the warning and correct the comment before XDP linearizing. Cc: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/virtio_net.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 08327e005ccc..1067253b98be 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -552,14 +552,8 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
struct page *xdp_page;
u32 act;
- /* No known backend devices should send packets with
- * more than a single buffer when XDP conditions are
- * met. However it is not strictly illegal so the case
- * is handled as an exception and a warning is thrown.
- */
+ /* This happens when rx buffer size is underestimated */
if (unlikely(num_buf > 1)) {
- bpf_warn_invalid_xdp_buffer();
-
/* linearize data for XDP */
xdp_page = xdp_linearize_page(rq, num_buf,
page, offset, &len);