linux-kernel - Re: [PATCH] SCTP: IPv4 mapped addr not returned in SCTPv6 accept()

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Date:	Thu, 26 Jul 2007 16:49:40 -0400
From:	Vlad Yasevich <vladislav.yasevich@...com>
To:	Dave Johnson <djohnson+linux-kernel@...starentnetworks.com>
Cc:	lksctp-developers@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Srinivas Akkipeddi <sakkiped@...rentnetworks.com>
Subject: Re: [PATCH] SCTP: IPv4 mapped addr not returned in SCTPv6 accept()

Dave Johnson wrote:
> Vlad Yasevich writes:
>> Ok.  First, this is a different bug, so I would prefer a separate patch.
>> Also, I see the problem and it's ugly, but this solution is not really correct,
>> both conceptually and code wise.
>>
>> Conceptually, the v4 code should never worry about V4-mapped addresses and shouldn't
>> muck with them.  They are IPv6 addresses and there should be a clean separation.
>>
>> Code wise, the code in the __sctp_connect() is terrible.
>>
>> Does the attached patch work for you in this case.
> 
> yes, with the v4mapped in ipv6.c and your patch, connect and accept
> both work with v4 mapped addresses.
> 
> Note instead of:
> 
>> +	af = sctp_get_af_specific(sa_addr->sa.sa_family);
>> +	af->to_sk_daddr(sa_addr, sk);
> 
> you should have:
> 
>> +	af = sctp_get_af_specific(sa_addr->sa_family);
>> +	af->to_sk_daddr((union sctp_addr *)sa_addr, sk);
> 
> 

Feel free to clean it up and submit both patches.

-vlad
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