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Date:	Wed, 21 Nov 2007 10:38:16 -0800
From:	"Anil Veerabhadrappa" <anilgv@...adcom.com>
To:	"Mike Christie" <michaelc@...wisc.edu>
cc:	"Mike Christie" <mchristi@...hat.com>,
	"Michael Chan" <mchan@...adcom.com>, davem@...emloft.net,
	netdev@...r.kernel.org, open-iscsi@...glegroups.com,
	talm@...adcom.com, lusinsky@...adcom.com, uri@...adcom.com,
	"SCSI Mailing List" <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH v3 2/2][BNX2]: Add iSCSI support to BNX2 devices.


> >> The sysfs bits related to the hba should be use one of the scsi sysfs 
> >> facilities or if they are related to iscsi bits and are generic then 
> >> through the iscsi hba
> > 
> > bnx2i needs 2 sysfs entries -
> > 1. QP size info - this is used to size per connection shared data
> > structures to issue work requests to chip (login, scsi cmd, tmf, nopin)
> > and get completions from the chip (scsi completions, async messages,
> > etc'). This is a iSCSI HBA attribute
> > 2. port mapper - we can be more flexible on classifying this as either
> > iSCSI HBA attribute or bnx2i driver global attribute
> > Can hooks be added to iSCSI transport class to include these?
> > 
> 
> Which ones were they exactly? I think JamesB wanted only common 
> transport values in the transport class. If it is driver specific then 
> it should go on the host or target or device with the scsi_host_template 
> attrs.
> 

It's a chicken & egg issue to put "port mapper" sysfs entry in scsi host
attributes. Application won't see sysfs unless initiator creates an
iSCSI session and driver can't create an iSCSI session without a tcp
port. I was wondering if there is a better way than using IOCTL in this
situation?

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