netdev - Re: What is lock_sock() before skb_free

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Message-ID: <49E98AD5.2010008@cosmosbay.com>
Date:	Sat, 18 Apr 2009 10:09:57 +0200
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
CC:	netdev@...r.kernel.org
Subject: Re: What is lock_sock() before skb_free_datagram() for?

Tetsuo Handa a écrit :
> Hello.
> 
> udp_recvmsg() and udpv6_recvmsg() call skb_free_datagram() with 
> lock_sock().
> But raw_recvmsg() and rawv6_recvmsg() call skb_free_datagram() 
> without
> lock_sock().
> Is it OK?

Yes it is.

UDP protocol has memory accounting in recent kernels, not RAW.

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