linux-kernel - Re: [PATCH v2 10/17] IB/Verbs: Adopt management helpers for IB helpers

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Message-ID: <20150407201259.GA17147@obsidianresearch.com>
Date:	Tue, 7 Apr 2015 14:12:59 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Michael Wang <yun.wang@...fitbricks.com>
Cc:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org, Hal Rosenstock <hal.rosenstock@...il.com>,
	Tom Tucker <tom@...ngridcomputing.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Mike Marciniszyn <infinipath@...el.com>,
	Eli Cohen <eli@...lanox.com>,
	Faisal Latif <faisal.latif@...el.com>,
	Upinder Malhi <umalhi@...co.com>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	"David S. Miller" <davem@...emloft.net>,
	Ira Weiny <ira.weiny@...el.com>,
	PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
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	Or Gerlitz <ogerlitz@...lanox.com>,
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	Haggai Eran <haggaie@...lanox.com>,
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	Moni Shoua <monis@...lanox.com>, Jiri Kosina <jkosina@...e.cz>,
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	Mitesh Ahuja <mitesh.ahuja@...lex.com>,
	Li RongQing <roy.qing.li@...il.com>,
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	Erez Shitrit <erezsh@...lanox.com>,
	Tom Gundersen <teg@...m.no>,
	Chuck Lever <chuck.lever@...cle.com>
Subject: Re: [PATCH v2 10/17] IB/Verbs: Adopt management helpers for IB
 helpers

On Tue, Apr 07, 2015 at 02:35:22PM +0200, Michael Wang wrote:
> index f704254..4e61104 100644
> +++ b/drivers/infiniband/core/sa_query.c
> @@ -540,7 +540,7 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
>  	ah_attr->port_num = port_num;
>  	ah_attr->static_rate = rec->rate;
>  
> -	force_grh = rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_ETHERNET;
> +	force_grh = !rdma_transport_ib(device, port_num);

Maybe these tests should be called cap_mandatory_grh - but I'm not
really sure how iWarp uses the GRH fields in the AH...

Jason
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