netdev - [RFC][LAPB] write_queue limit in lapb_data

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Date:	Wed, 2 Apr 2008 13:50:17 +0400
From:	"Matvejchikov Ilya" <matvejchikov@...il.com>
To:	"David Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [RFC][LAPB] write_queue limit in lapb_data_request

>  > LAPB doesn't check for write_queue length in lapb_data_request(). So
>  > in some conditions it may grow unlimited. There is a potential problem
>  > for small systems.
>  >
>  > It seems like this for me:
>
>  It doesn't enforce limits on any of it's queued from what
>  I can tell.

I'm sorry. It's not quiet clear to me what you mean. As far as I know
LAPB internals there is only one place where write_queue may increase.
In other cases the ack_queue is used.

>
>  Without a thorough audit of resource limit enforcement in
>  this protocol stack, changing things here might be more
>  trouble than it's worth.
>

Thanks.
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