netdev - Re: [RFC][PATCH 3/3] IPv4:Check IP_MULTICAST

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Date:	Tue, 10 Jun 2008 17:07:34 +0800
From:	Shan Wei <shanwei@...fujitsu.com>
To:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
CC:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [RFC][PATCH 3/3] IPv4:Check IP_MULTICAST_LOOP option value

YOSHIFUJI Hideaki / 吉藤英明 写道:
> In article <484E3C0A.1000808@...fujitsu.com> (at Tue, 10 Jun 2008 16:32:10 +0800), Shan Wei <shanwei@...fujitsu.com> says:
> 
>> YOSHIFUJI Hideaki / 吉藤英明 写道:
>>> In article <484E3293.8000507@...fujitsu.com> (at Tue, 10 Jun 2008 15:51:47 +0800), Shan Wei <shanwei@...fujitsu.com> says:
>>>
>>>> The IP_MULTICAST_LOOP option can only be set with o or 1. When 
>>>> other valuse are set, the kernel should return an error of EINVAL.
>>>>
>>>> In addition, the option should not be uesd by SOCK_STREAM type,
>>>> same as IP_MULTICAST_IF, IP_MULTICAST_TTL.
>>>>   
>>>> But the kernel doesn't check them.
>>> Is there any standard reference about this?
>>>
>> I have not found it.
>> But, the IP_MULTICAST_LOOP option is same as IPV6_MULTICAST_LOOP.
> 
> I disagree.
> We follow what traditional BSDs do, and they do not check if the
> value is 0 or 1 for IP_MULTICAST_LOOP.
> On the other hand, they do for IPV6_MULTICAST_LOOP.
> 
Ok.
no need to check "val".

The option should not be uesd by SOCK_STREAM type.
how do you think of ?
> --yoshfuji
> 
> 
> 


-- 
Regards
単 衛
--------------------------------------------------
Shan Wei
Development Dept.I

Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
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