Commit 73b62bd0 authored by Jason Wang's avatar Jason Wang Committed by David S. Miller

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: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d3a51d6c
...@@ -552,14 +552,8 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, ...@@ -552,14 +552,8 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
struct page *xdp_page; struct page *xdp_page;
u32 act; u32 act;
/* No known backend devices should send packets with /* This happens when rx buffer size is underestimated */
* 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.
*/
if (unlikely(num_buf > 1)) { if (unlikely(num_buf > 1)) {
bpf_warn_invalid_xdp_buffer();
/* linearize data for XDP */ /* linearize data for XDP */
xdp_page = xdp_linearize_page(rq, num_buf, xdp_page = xdp_linearize_page(rq, num_buf,
page, offset, &len); page, offset, &len);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment