netdev - Re: [PATCH] ipv6: udp packets following an UFO enqueued packet need also be handled by UFO

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Date:	Wed, 02 Oct 2013 04:53:55 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org,
	davem@...emloft.net, kuznet@....inr.ac.ru, jmorris@...ei.org,
	kaber@...sh.net, herbert@...dor.apana.org.au,
	hannes@...essinduktion.org
Subject: Re: [PATCH] ipv6: udp packets following an UFO enqueued packet need
 also be handled by UFO


> This patch should fix this on ipv4 as well:
> 
> Subject: ip_output: do skb ufo init for peeked non ufo skb as well
> 

Is it an official patch ? s/Subject:/[PATCH]/ 

> Now, if user application does:

Any idea when the bug was added (commit id + title) ?

> sendto len<mtu flag MSG_MORE
> sendto len>mtu flag 0
> The skb is not treated as fragmented one because it is not initialized
> that way. So move the initialization to fix this.
> 
> Signed-off-by: Jiri Pirko <jiri@...nulli.us>
> ---
>  net/ipv4/ip_output.c | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
> index a04d872..bd21c5d 100644
> --- a/net/ipv4/ip_output.c
> +++ b/net/ipv4/ip_output.c
> @@ -772,15 +772,19 @@ static inline int ip_ufo_append_data(struct sock *sk,
>  		/* initialize protocol header pointer */
>  		skb->transport_header = skb->network_header + fragheaderlen;
>  
> -		skb->ip_summed = CHECKSUM_PARTIAL;
>  		skb->csum = 0;

Any idea why we have skb->csum = 0 here ?

Thanks !


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