linux-kernel - Re: [PATCH v6 01/26] IB/Verbs: Implement new callback query

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Message-ID: <553A5362.3040808@talpey.com>
Date:	Fri, 24 Apr 2015 10:29:54 -0400
From:	Tom Talpey <tom@...pey.com>
To:	Michael Wang <yun.wang@...fitbricks.com>,
	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal@....mellanox.co.il>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
CC:	Steve Wise <swise@...ngridcomputing.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Doug Ledford <dledford@...hat.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Tom Tucker <tom@...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>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>
Subject: Re: [PATCH v6 01/26] IB/Verbs: Implement new callback query_transport()

On 4/24/2015 8:23 AM, Michael Wang wrote:
> Add new callback query_transport() and implement for each HW.
>
> Mapping List:
> 		node-type	link-layer	old-transport	new-transport
> ...
> mlx4    	IB_CA		IB/ETH		IB		IB/IBOE
> mlx5    	IB_CA		IB		IB		IB
> ...
> diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
> index 57c9809..b6f2f58 100644
> --- a/drivers/infiniband/hw/mlx5/main.c
> +++ b/drivers/infiniband/hw/mlx5/main.c
> @@ -262,6 +262,12 @@ out:
>   	return err;
>   }
>
> +static enum rdma_transport_type
> +mlx5_ib_query_transport(struct ib_device *device, u8 port_num)
> +{
> +	return RDMA_TRANSPORT_IB;
> +}
> +


Just noticed that mlx5 is not being coded as RoCE-capable like mlx4.
The mlx5 driver is for the new ConnectX-4, which implements all three
of IB, RoCE and RoCEv2, right? Are those last two not supported?


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