Re: [RESEND] [PATCH] tcp: fix for splice receive when used with software LRO

[David Miller <davem@davemloft.net>]

From: Octavian Purdila <opurdila@ixiacom.com>
Date: Wed, 18 Jun 2008 19:07:16 +0300

>     tcp: fix for splice receive when used with software LRO
>     
>     If an skb has nr_frags set to zero but its frag_list is not empty (as
>     it can happen if software LRO is enabled), and a previous
>     tcp_read_sock has consumed the linear part of the skb, then
>     __skb_splice_bits:
>     
>     (a) incorrectly reports an error and
>     
>     (b) forgets to update the offset to account for the linear part
>     
>     Any of the two problems will cause the subsequent __skb_splice_bits
>     call (the one that handles the frag_list skbs) to either skip data,
>     or, if the unadjusted offset is greater then the size of the next skb
>     in the frag_list, make tcp_splice_read loop forever.
>     
>     Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>

Applied, th anks Octavian.