netdev - Re: [PATCH 07/11] IB/cma: Helper functions to access port space IDRs

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Message-ID: <5586B361.7060500@mellanox.com>
Date:	Sun, 21 Jun 2015 15:51:45 +0300
From:	Haggai Eran <haggaie@...lanox.com>
To:	"Hefty, Sean" <sean.hefty@...el.com>,
	Doug Ledford <dledford@...hat.com>
CC:	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Liran Liss <liranl@...lanox.com>,
	Guy Shapiro <guysh@...lanox.com>,
	Shachar Raindel <raindel@...lanox.com>,
	Yotam Kenneth <yotamke@...lanox.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Subject: Re: [PATCH 07/11] IB/cma: Helper functions to access port space IDRs

On 16/06/2015 01:36, Hefty, Sean wrote:
>> Add helper functions to access the IDRs by port-space and port number.
>>
>> Pass around the port-space enum in cma.c instead of using pointers to
>> port-space IDRs.
> 
> What is the motivation for this change?

In the next patch ("IB/cma: Add net_dev and private data checks to RDMA
CM"), in cma_id_from_event(), I pass the port-space that is extracted
from the service ID to cma_ps_find(). Without this patch, I would need
to find the correct port-space IDR, effectively duplicating the code in
cma_select_inet_ps().

Regards,
Haggai

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