netdev - Re: Multicast routing stops functioning after 4G multicast packets recived.

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Date:	Thu, 19 Dec 2013 07:15:37 -0800
From:	Ben Greear <greearb@...delatech.com>
To:	Bob Falken <NetFestivalHaveFun@....com>, netdev@...r.kernel.org
Subject: Re: Multicast routing stops functioning after 4G multicast packets
 recived.

On 12/19/2013 07:09 AM, Hannes Frederic Sowa wrote:
> On Thu, Dec 19, 2013 at 03:48:16PM +0100, Bob Falken wrote:
>> Hello, I have an issue after kernel 2.6.37 and above.
>> If i roll back to kernel 2.6.36.4 everything is fine.
>> if recive more than 4294967295 multicast packets, the kernel does not register the multicast packets. and multicast routing does not functioning.
>> (Tested bouth FIB_HASH and FIB_TRIE)
>> Tested with xorp and pimd.
>> I have abount 24 multicast groups, and it takes me about 17hours to reproduce the issue after a reboot.
>> Reboot is reqired to fix the issue. (Tested to stop/start pimd/xorp, reload network module for the network interface "e1000e",
>> Used birdge adapter and remove bridge adapter and readd bridge adapter to clear counters. none of thouse solves the issue.)
>
> Please test this with a recent kernel. 2.6.37 is really old and you normally
> won't get good support here with such old kernels.

Note that he did test up to 3.11.9 and it still showed failures.

Thanks,
Ben

>
> Greetings,
>
>    Hannes
>
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-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

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