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

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Message-ID: <5524E5A9.2090803@profitbricks.com>
Date:	Wed, 08 Apr 2015 10:24:09 +0200
From:	Michael Wang <yun.wang@...fitbricks.com>
To:	"Hefty, Sean" <sean.hefty@...el.com>,
	Roland Dreier <roland@...nel.org>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	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>,
	infinipath <infinipath@...el.com>, Eli Cohen <eli@...lanox.com>,
	"Latif, Faisal" <faisal.latif@...el.com>,
	Upinder Malhi <umalhi@...co.com>,
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	"J. Bruce Fields" <bfields@...ldses.org>,
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	Moni Shoua <monis@...lanox.com>, Jiri Kosina <jkosina@...e.cz>,
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	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 04/07/2015 08:40 PM, Hefty, Sean wrote:
[snip]
>> @@ -200,11 +200,9 @@ int ib_init_ah_from_wc(struct ib_device *device, u8
>> port_num, struct ib_wc *wc,
>>  	u32 flow_class;
>>  	u16 gid_index;
>>  	int ret;
>> -	int is_eth = (rdma_port_get_link_layer(device, port_num) ==
>> -			IB_LINK_LAYER_ETHERNET);
>>
>>  	memset(ah_attr, 0, sizeof *ah_attr);
>> -	if (is_eth) {
>> +	if (!rdma_transport_ib(device, port_num)) {
>>  		if (!(wc->wc_flags & IB_WC_GRH))
>>  			return -EPROTOTYPE;
>>
>> @@ -873,7 +871,7 @@ int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
>>  	union ib_gid  sgid;
>>
>>  	if ((*qp_attr_mask & IB_QP_AV)  &&
>> -	    (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num)
>> == IB_LINK_LAYER_ETHERNET)) {
>> +	    (!rdma_transport_ib(qp->device, qp_attr->ah_attr.port_num))) {
>>  		ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
>>  				   qp_attr->ah_attr.grh.sgid_index, &sgid);
>>  		if (ret)
> 
> The above checks would be better as:
> 
> 	force_grh = rdma_transport_iboe(...)
> 
> They are RoCE/IBoE specific checks.

Got it, will be in next version :-)

Regards,
Michael Wang

> 
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