virtio_net: convert to use generic xdp_frame and xdp_return_frame API

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The virtio_net driver assumes XDP frames are always released based on
page refcnt (via put_page).  Thus, is only queues the XDP data pointer
address and uses virt_to_head_page() to retrieve struct page.

Use the XDP return API to get away from such assumptions. Instead
queue an xdp_frame, which allow us to use the xdp_return_frame API,
when releasing the frame.

V8: Avoid endianness issues (found by kbuild test robot)
V9: Change __virtnet_xdp_xmit from bool to int return value (found by Dan Carpenter)

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jesper Dangaard Brouer 2018-04-17 16:45:52 +02:00 • committed by David S. Miller

parent 1ffcbc8537

commit cac320c850

1 changed files with 29 additions and 25 deletions

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drivers/net/virtio_net.c

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