linux-kernel - Re: [PATCH v5 25/27] IB/Verbs: Use management helper cap_eth

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Message-ID: <20150422001150.GY15893@phlsvsds.ph.intel.com>
Date:	Tue, 21 Apr 2015 20:11:51 -0400
From:	"ira.weiny" <ira.weiny@...el.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, hal@....mellanox.co.il,
	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>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>,
	Tom Talpey <tom@...pey.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Doug Ledford <dledford@...hat.com>
Subject: Re: [PATCH v5 25/27] IB/Verbs: Use management helper cap_eth_ah()

On Mon, Apr 20, 2015 at 10:43:03AM +0200, Michael Wang wrote:
> 
> Introduce helper cap_eth_ah() to help us check if the port of an
> IB device support Ethernet Address Handler.
> 
> Cc: Hal Rosenstock <hal@....mellanox.co.il>
> Cc: Steve Wise <swise@...ngridcomputing.com>
> Cc: Tom Talpey <tom@...pey.com>
> Cc: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
> Cc: Doug Ledford <dledford@...hat.com>
> Cc: Ira Weiny <ira.weiny@...el.com>
> Cc: Sean Hefty <sean.hefty@...el.com>
> Signed-off-by: Michael Wang <yun.wang@...fitbricks.com>

Reviewed-by: Ira Weiny <ira.weiny@...el.com>

> ---
>  drivers/infiniband/core/cma.c      |  2 +-
>  drivers/infiniband/core/sa_query.c |  2 +-
>  drivers/infiniband/core/verbs.c    |  2 +-
>  include/rdma/ib_verbs.h            | 15 +++++++++++++++
>  4 files changed, 18 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
> index 9c1f5b72..b9f7ccc 100644
> --- a/drivers/infiniband/core/cma.c
> +++ b/drivers/infiniband/core/cma.c
> @@ -732,7 +732,7 @@ static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv,
>  	int ret;
>  	u16 pkey;
>  
> -	if (rdma_tech_iboe(id_priv->id.device, id_priv->id.port_num))
> +	if (cap_eth_ah(id_priv->id.device, id_priv->id.port_num))
>  		pkey = 0xffff;
>  	else
>  		pkey = ib_addr_get_pkey(dev_addr);
> diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
> index f14a66f..063c17c 100644
> --- a/drivers/infiniband/core/sa_query.c
> +++ 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_tech_iboe(device, port_num);
> +	force_grh = cap_eth_ah(device, port_num);
>  
>  	if (rec->hop_limit > 1 || force_grh) {
>  		ah_attr->ah_flags = IB_AH_GRH;
> diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
> index 7264860..ee4b5cb 100644
> --- a/drivers/infiniband/core/verbs.c
> +++ b/drivers/infiniband/core/verbs.c
> @@ -202,7 +202,7 @@ int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
>  	int ret;
>  
>  	memset(ah_attr, 0, sizeof *ah_attr);
> -	if (rdma_tech_iboe(device, port_num)) {
> +	if (cap_eth_ah(device, port_num)) {
>  		if (!(wc->wc_flags & IB_WC_GRH))
>  			return -EPROTOTYPE;
>  
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 9cfab09..45050cb 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -1894,6 +1894,21 @@ static inline int cap_af_ib(struct ib_device *device, u8 port_num)
>  }
>  
>  /**
> + * cap_eth_ah - Check if the port of device has the capability
> + * Ethernet Address Handler.
> + *
> + * @device: Device to be checked
> + * @port_num: Port number of the device
> + *
> + * Return 0 when port of the device don't support
> + * Ethernet Address Handler.
> + */
> +static inline int cap_eth_ah(struct ib_device *device, u8 port_num)
> +{
> +	return rdma_tech_iboe(device, port_num);
> +}
> +
> +/**
>   * cap_read_multi_sge - Check if the port of device has the capability
>   * RDMA Read Multiple Scatter-Gather Entries.
>   *
> -- 
> 2.1.0
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