netdev - Re: [patch net-next 1/4] [patch nf-next v2] IPVS: ICMPv6 checksum calculation

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Message-ID: <Pine.LNX.4.58.1008262234270.3055@u.domain.uli>
Date:	Thu, 26 Aug 2010 22:36:24 +0300 (EEST)
From:	Julian Anastasov <ja@....bg>
To:	Simon Horman <horms@...ge.net.au>
cc:	lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	Wensong Zhang <wensong@...ux-vs.org>,
	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Xiaoyu Du <tingsrain@...il.com>
Subject: Re: [patch net-next 1/4] [patch nf-next v2] IPVS: ICMPv6 checksum
 calculation


	Hello,

On Thu, 26 Aug 2010, Simon Horman wrote:

> Cc: Xiaoyu Du <tingsrain@...il.com>
> Signed-off-by: Julian Anastasov <ja@....bg>
> Signed-off-by: Simon Horman <horms@...ge.net.au>
> 
> Index: nf-next-2.6/net/netfilter/ipvs/ip_vs_core.c
> ===================================================================
> --- nf-next-2.6.orig/net/netfilter/ipvs/ip_vs_core.c	2010-08-25 16:57:37.000000000 +0900
> +++ nf-next-2.6/net/netfilter/ipvs/ip_vs_core.c	2010-08-25 17:02:35.000000000 +0900
> @@ -637,9 +637,11 @@ void ip_vs_nat_icmp_v6(struct sk_buff *s
>  	}
>  
>  	/* And finally the ICMP checksum */
> -	icmph->icmp6_cksum = 0;
> -	/* TODO IPv6: is this correct for ICMPv6? */
> -	ip_vs_checksum_complete(skb, icmp_offset);
> +	icmph->icmp6_cksum = ~csum_ipv6_magic(&iph->saddr, &iph->daddr,
> +					      skb->len - icmp_offset,
> +					      IPPROTO_ICMPV6, 0);
> +	skb->csum_start = skb_network_header(skb) - skb->head + icmp_offset;
> +	skb->csum_offset = offsetof(struct icmp6hdr, icmp6_cksum);
>  	skb->ip_summed = CHECKSUM_UNNECESSARY;

	Ops, this should be CHECKSUM_PARTIAL

>  	if (inout)

Regards

--
Julian Anastasov <ja@....bg>
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