From: Roland Dreier <rdreier@cisco.com>
To: David Miller <davem@davemloft.net>
Cc: tom@opengridcomputing.com, jeff@garzik.org,
swise@opengridcomputing.com, mshefty@ichips.intel.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
general@lists.openfabrics.org
Subject: Re: [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP ports from the host TCP port space.
Date: Fri, 17 Aug 2007 16:31:07 -0700 [thread overview]
Message-ID: <adafy2hyc04.fsf@cisco.com> (raw)
In-Reply-To: <20070817.142756.65194845.davem@davemloft.net> (David Miller's message of "Fri, 17 Aug 2007 14:27:56 -0700 (PDT)")
> > > When using RDMA you lose the capability to do packet shaping,
> > > classification, and all the other wonderful networking facilities
> > > you've grown to love and use over the years.
> >
> > Same thing with TSO and LRO and who knows what else.
>
> Not true at all. Full classification and filtering still is usable
> with TSO and LRO.
Well, obviously with TSO and LRO the packets that the stack sends or
receives are not the same as what's on the wire. Whether that breaks
your wonderful networking facilities or not depends on the specifics
of the particular facility I guess -- for example shaping is clearly
broken by TSO. (And people can wonder what the packet trains TSO
creates do to congestion control on the internet, but the netdev crowd
has already decided that TSO is "good" and RDMA is "bad")
- R.
next prev parent reply other threads:[~2007-08-17 23:31 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-07 14:37 [PATCH RFC] RDMA/CMA: Allocate PS_TCP ports from the host TCP port space Steve Wise
2007-08-07 14:54 ` Evgeniy Polyakov
2007-08-07 15:06 ` Steve Wise
2007-08-07 15:39 ` Evgeniy Polyakov
2007-08-09 18:49 ` Steve Wise
2007-08-09 21:40 ` [ofa-general] " Sean Hefty
2007-08-09 21:55 ` David Miller
2007-08-09 23:22 ` Sean Hefty
2007-08-15 14:42 ` Steve Wise
2007-08-16 2:26 ` Jeff Garzik
2007-08-16 3:11 ` Roland Dreier
2007-08-16 3:27 ` [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP portsfrom " Sean Hefty
2007-08-16 13:43 ` [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP ports from " Tom Tucker
2007-08-16 21:17 ` David Miller
2007-08-17 19:52 ` Roland Dreier
2007-08-17 21:27 ` David Miller
2007-08-17 23:31 ` Roland Dreier [this message]
2007-08-18 0:00 ` David Miller
2007-08-18 5:23 ` Roland Dreier
2007-08-18 6:44 ` David Miller
2007-08-19 7:01 ` [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP portsfrom " Sean Hefty
2007-08-19 7:23 ` David Miller
2007-08-19 17:33 ` [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCPportsfrom " Felix Marti
2007-08-19 19:32 ` David Miller
2007-08-19 19:49 ` Felix Marti
2007-08-19 23:04 ` David Miller
2007-08-20 0:32 ` Felix Marti
2007-08-20 0:40 ` David Miller
2007-08-20 0:47 ` Felix Marti
2007-08-20 1:05 ` David Miller
2007-08-20 1:41 ` Felix Marti
2007-08-20 11:07 ` Andi Kleen
2007-08-20 16:26 ` Felix Marti
2007-08-20 19:16 ` Rick Jones
2007-08-20 9:43 ` Evgeniy Polyakov
2007-08-20 16:53 ` Felix Marti
2007-08-20 18:10 ` Andi Kleen
2007-08-20 19:02 ` Felix Marti
2007-08-20 20:18 ` Thomas Graf
2007-08-20 20:33 ` Andi Kleen
2007-08-20 20:33 ` Patrick Geoffray
2007-08-21 4:21 ` Felix Marti
2007-08-19 23:27 ` Andi Kleen
2007-08-19 23:12 ` David Miller
2007-08-20 1:45 ` Felix Marti
2007-08-20 0:18 ` Herbert Xu
2007-08-21 1:16 ` [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCP ports from " Roland Dreier
2007-08-21 6:58 ` David Miller
2007-08-28 19:38 ` Roland Dreier
2007-08-28 20:43 ` David Miller
2007-10-08 21:54 ` Steve Wise
2007-10-09 13:44 ` James Lentini
2007-10-10 21:01 ` Sean Hefty
2007-10-10 23:04 ` David Miller
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