virtio-net: fix page miscount during XDP linearizing

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We don't put page during linearizing, the would cause leaking when
xmit through XDP_TX or the packet exceeds PAGE_SIZE. Fix them by
put page accordingly. Also decrease the number of buffers during
linearizing to make sure caller can free buffers correctly when packet
exceeds PAGE_SIZE. With this patch, we won't get OOM after linearize
huge number of packets.

Cc: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2016-12-23 22:37:26 +08:00 • committed by David S. Miller

parent 275be061b3

commit 56a86f84b8

1 changed files with 11 additions and 8 deletions

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drivers/net/virtio_net.c

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