On Tue, 18 May 2010, Pyun YongHyeon wrote:
On Tue, May 18, 2010 at 10:53:27PM +0000, Bjoern A. Zeeb wrote:
On Tue, 18 May 2010, Pyun YongHyeon wrote:
On Tue, May 18, 2010 at 03:27:33AM +0000, Bjoern A. Zeeb wrote:
On Mon, 10 May 2010, Pyun YongHyeon wrote:
Author: yongari
Date: Mon May 10 17:14:14 2010
New Revision: 207851
URL: http://svn.freebsd.org/changeset/base/207851
Log:
Implement TSO and TSO over VLAN. Increase number of allowed
fragmentation of mbuf chain to 32 from 16 because TSO can send 64KB
sized packet which in turn requires long list of mbuf chain. Due to
lack of documentation, I'm not sure whether driver have to pull up
ethernet/IP/TCP header with options to make controller work but
driver have to parse TCP header to update pseudo TCP checksum
anyway. The controller expects pseudo TCP checksum computed by
upper stack and the checksum should follow the MS NDIS
specification to make TSO work.
Tested by: xclin <xclin <> cs dot nctu dot edu dot tw >
This brings in INET as a dependency for the driver and fails on my
nooptions INET
nooptions INET6
kernels (in_pseudo()).
AFAIK sge(4) is not the only driver that has INET dependency. I
think we need IPv6 offloading framework(checksum offloading, TSO4
There is no checksum on IPv6.
Yes, but controllers that computes only partial checksum for
received frames require parsing IPv4/IPv6 header to support
checksum offloading. If we have good framework we can avoid
duplicated code as well as INET/INET6 dependency.
and TSO6) before removing INET dependency in various drivers.
Most recent ethernet controllers support IPv6 offloading and
FreeBSD still lacks these nice features.
This is true, but we should (still) fix this and work on a better
solution. You may remember that I tried to get this discussion
started twice during the last 12 months. First time after I added
the inet depency in sys/conf/files for all the other drivers that
have the same problem(s).
I will be very happy to chat with you and np@ and maybe tuexen@ for
SCTP and Drew and Jack again to get this all sorted out.
I'm also happy to go that direction.
Great!
But it wouldn't be for 8.1-RELEASE, right?
Right.
--
Bjoern A. Zeeb (from 21) Micky Rosa:
But as we've all said, this game is about the past and the future,
and tonight we forget about the past. We just focus on the future.
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