tun: make tun_build_skb() thread safe

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tun_build_skb() is not thread safe since it uses per queue page frag,
this will break things when multiple threads are sending through same
queue. Switch to use per-thread generator (no lock involved).

Fixes: 66ccbc9c87 ("tap: use build_skb() for small packet")
Tested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2017-08-16 22:14:33 +08:00 • committed by David S. Miller

parent ba5c4dac03

commit 0bbd7dad34

1 changed files with 1 additions and 6 deletions

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7

drivers/net/tun.c

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