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Date:      Tue, 7 Nov 2006 10:39:23 +0530
From:      <sivakumar.subramani@wipro.com>
To:        <freebsd-net@freebsd.org>, <freebsd-stable@freebsd.org>
Subject:   Regarding Jumbo frame implementation in bge 
Message-ID:  <821C7AD2A9F78942B86059792262577315B072@blr-m3-msg.wipro.com>

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Hi,
=0D
In bge driver, we have BGE_JUMBO_FRAMELEN defined to 9018.
if_bgereg.h:#define BGE_JUMBO_FRAMELEN  9018
=0D
This macro is used to allocate the memory for jumbo buffer. If I have a
MTU size of 2000, still bge will allocate the jumbo buffer of size
BGE_JUMBO_FRAMELEN. Instead can we make the size to be depend on the
MTU. I mean instead of using BGE_JUMBO_FRAMELEN macro we can use MTU +
IP header + CRC for Jumbo buffer size.
=0D
Any reason for allocating a hard coded 9018 size all Jumbo MTU frame
(whether it is 9000 / 2000)?
=0D
Thanks,
~Siva



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