netdev - Re: [PATCH 5/6] unix: Support peeking offset for datagram and seqpacket sockets

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Date:	Tue, 21 Feb 2012 18:49:56 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 5/6] unix: Support peeking offset for datagram and
 seqpacket sockets

Le mardi 21 février 2012 à 21:31 +0400, Pavel Emelyanov a écrit :
> The sk_peek_off manipulations are protected with the unix_sk->readlock mutex.
> This mutex is enough since all we need is to syncronize setting the offset
> vs reading the queue head. The latter is fully covered with the mentioned lock.
> 
> The recently added __skb_recv_datagram's offset is used to pick the skb to
> read the data from.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...allels.com>
> 
> ---
>  net/unix/af_unix.c |   30 +++++++++++++++++++++++++-----
>  1 files changed, 25 insertions(+), 5 deletions(-)

Very nice !

Acked-by: Eric Dumazet <eric.dumazet@...il.com>



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