netdev - RE: [PATCH 04/11] IB/cm: Expose DGID in SIDR request events

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Date:	Mon, 15 Jun 2015 21:32:53 +0000
From:	"Hefty, Sean" <sean.hefty@...el.com>
To:	Haggai Eran <haggaie@...lanox.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 04/11] IB/cm: Expose DGID in SIDR request events

>  drivers/infiniband/core/cm.c | 7 +++++++
>  include/rdma/ib_cm.h         | 2 ++
>  2 files changed, 9 insertions(+)
> 
> diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
> index c5f5f89e274a..46f99ec4080a 100644
> --- a/drivers/infiniband/core/cm.c
> +++ b/drivers/infiniband/core/cm.c
> @@ -2983,6 +2983,13 @@ static void cm_format_sidr_req_event(struct cm_work
> *work,
>  	param->pkey = __be16_to_cpu(sidr_req_msg->pkey);
>  	param->listen_id = listen_id;
>  	param->service_id = sidr_req_msg->service_id;
> +	if (work->mad_recv_wc->wc->wc_flags & IB_WC_GRH) {
> +		param->grh = 1;
> +		memcpy(&param->dgid, &work->mad_recv_wc->recv_buf.grh->dgid,
> +		       sizeof(param->dgid));
> +	} else {
> +		param->grh = 0;

What is the use case here?  Are you trying to sort by device?  How does the GID of the GMP relate to the listen?

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