To: Mahesh <maheshk@cdac.in>
Cc: David Miller <davem@davemloft.net>, linux-kernel@vger.kernel.org,
       kernelnewbies@nl.linux.org, general@lists.openfabrics.org
Subject: Re: [HOWTO] accessing the DMA mapped data
References: <4642D095.6070305@cdac.in> <20070510.014751.74749340.davem@daveml
	oft.net> <4642FFA7.4040303@cdac.in>
	<20070510.043233.08323827.davem@davemloft.net>
	<464304DD.9070600@cdac.in>
From: Roland Dreier <rdreier@cisco.com>
Date: Thu, 10 May 2007 11:27:56 -0700
In-Reply-To: <464304DD.9070600@cdac.in> (Mahesh's message of "Thu, 10 May 2007 17:11:17 +0530")
Message-ID: <ada4pmk1qkz.fsf@cisco.com>
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 > Here I am dealing with a infiniband (see www.openfabrics.org)
 > network device driver. The layer above the driver is the standard
 > infiniband core interface. Now I have a situation where I need to
 > peek into the packets and do some modifications(some hacking). So I
 > just want know whether I can access the original data region using
 > the bus address generated by the dma_map_single.

If you give more details about what you're trying to do, maybe I can
suggest a good way to accomplish it.

Also for IB-related stuff you may want to at least CC
<general@lists.openfabrics.org> to get the best info.
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