bpf: fix virtio-net's length calc for XDP_PASS

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In commit 6870de435b ("bpf: make virtio compatible w/
bpf_xdp_adjust_tail") i didn't account for vi->hdr_len during new
packet's length calculation after bpf_prog_run in receive_mergeable.
because of this all packets, if they were passed to the kernel,
were truncated by 12 bytes.

Fixes:6870de435b90 ("bpf: make virtio compatible w/ bpf_xdp_adjust_tail")
Reported-by: David Ahern <dsahern@gmail.com>

Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Nikita V. Shirokov 2018-04-22 21:16:48 -07:00 • committed by Daniel Borkmann

parent 48d7a07ba3

commit aaa6452763

1 changed files with 1 additions and 1 deletions

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drivers/net/virtio_net.c

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