linux-kernel - Re: [patch nf-next] IPVS: ICMPv6 checksum calculation

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Message-ID: <AANLkTikwd8Tfj2tZrfgFi+OGhJGOSMAFhPqSVtSrAX-f@mail.gmail.com>
Date:	Mon, 23 Aug 2010 10:54:32 +0800
From:	xiaoyu Du <tingsrain@...il.com>
To:	Julian Anastasov <ja@....bg>
Cc:	Simon Horman <horms@...ge.net.au>,
	David Miller <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, lvs-devel@...r.kernel.org,
	netfilter-devel@...r.kernel.org, kaber@...sh.net
Subject: Re: [patch nf-next] IPVS: ICMPv6 checksum calculation

Yes, I had added it and test it, it works.

2010/8/20 Julian Anastasov <ja@....bg>:
>
>        Hello,
>
> On Fri, 20 Aug 2010, xiaoyu Du wrote:
>
>> I just replied to thank for his idea then, as he gived me some ideas
>> on how to manipulate
>> checksum. I tested the code today, but it doesn't seem to work. (I just wrote a
>> netfilter module and hooked the code on local_out , then ping6 the
>> address on another PC,
>> It failed.). I'll find out why.
>
>        May be because I copied csum_ipv6_magic() code from
> your patch. Please, try with one '~' before csum_ipv6_magic.
>
>> >> >>>      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_PARTIAL;
>
> Regards
>
> --
> Julian Anastasov <ja@....bg>
>
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