Thread (5 messages) 5 messages, 3 authors, 2017-08-17

Re: [PATCH] tun: make tun_build_skb() thread safe

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From: Jason Wang <hidden>
Date: 2017-08-16 14:30:09
Also in: lkml


On 2017年08月16日 22:14, Jason Wang wrote:
From: Eric Dumazet <redacted>

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: 66ccbc9c87c2 ("tap: use build_skb() for small packet")
Tested-by: Jason Wang <redacted>
Signed-off-by: Eric Dumazet <redacted>
Signed-off-by: Jason Wang <redacted>
---
  drivers/net/tun.c | 7 +------
Forget to mention, this is for net-next.

Thanks
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