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| author |   Jason Wang <jasowang@redhat.com> | 2016-12-23 22:37:24 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-12-23 13:48:53 -0500 |
| commit | 73b62bd085f4737679ea9afc7867fa5f99ba7d1b (patch) | |
| tree | 01bf204163ac9b4654963d8a95186a5f52750bc6 | |
| parent | Merge branch 'mlxsw-router-fixes' (diff) | |
| download | linux-dev-73b62bd085f4737679ea9afc7867fa5f99ba7d1b.tar.xz linux-dev-73b62bd085f4737679ea9afc7867fa5f99ba7d1b.zip | |
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>
| -rw-r--r-- | drivers/net/virtio_net.c | 8 |
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); |