netdev - Re: [PATCH 3/14] nes: connection manager routines

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Message-ID: <46BB81BD.2040904@opengridcomputing.com>
Date:	Thu, 09 Aug 2007 16:06:05 -0500
From:	Steve Wise <swise@...ngridcomputing.com>
To:	Glenn Grundstrom <ggrundstrom@...Effect.com>
CC:	Andi Kleen <andi@...stfloor.org>, rdreier@...co.com,
	ewg@...ts.openfabrics.org, netdev@...r.kernel.org
Subject: Re: [PATCH 3/14] nes: connection manager routines

Glenn Grundstrom wrote:
> This code is far from a TCP stack.  It's main purpose is to exchange
> RDMA MPA request/response messages that are required by the iWarp specs
> and therefore needed by our hardware.  All RNIC hardware vendors need
> this MPA message exchange, including those already accepted into
> kernel.org.  Do you have an alternative suggestion?
> 

For the record, the existing linux RNICS don't exactly work this way:

Ammasso handles all TCP connection setup and MPA negotiation in HW/FW. 
The connection setup interface between the RNIC and host driver are 
strictly for RDMA connections.

Chelsio has a message based interface to the HW/FW for establishing
TCP connections and exchanging data in streaming mode.  No TCP
processing is done in the driver.

Steve.
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