linux-kernel - Re: [PATCH v5 16/27] IB/Verbs: Use management helper cap_ib

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Message-ID: <20150422000859.GP15893@phlsvsds.ph.intel.com>
Date:	Tue, 21 Apr 2015 20:09:00 -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 16/27] IB/Verbs: Use management helper cap_ib_mad()

On Mon, Apr 20, 2015 at 10:39:12AM +0200, Michael Wang wrote:
> 
> Introduce helper cap_ib_mad() to help us check if the port of an
> IB device support Infiniband Management Datagrams.
> 
> 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/mad.c      |  6 +++---
>  drivers/infiniband/core/user_mad.c |  6 +++---
>  include/rdma/ib_verbs.h            | 15 +++++++++++++++
>  3 files changed, 21 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
> index 1822932..4315aeb 100644
> --- a/drivers/infiniband/core/mad.c
> +++ b/drivers/infiniband/core/mad.c
> @@ -3066,7 +3066,7 @@ static void ib_mad_init_device(struct ib_device *device)
>  	}
>  
>  	for (i = start; i <= end; i++) {
> -		if (!rdma_ib_or_iboe(device, i))
> +		if (!cap_ib_mad(device, i))
>  			continue;
>  
>  		if (ib_mad_port_open(device, i)) {
> @@ -3087,7 +3087,7 @@ error_agent:
>  
>  error:
>  	while (--i >= start) {
> -		if (!rdma_ib_or_iboe(device, i))
> +		if (!cap_ib_mad(device, i))
>  			continue;
>  
>  		if (ib_agent_port_close(device, i))
> @@ -3111,7 +3111,7 @@ static void ib_mad_remove_device(struct ib_device *device)
>  	}
>  
>  	for (i = start; i <= end; i++) {
> -		if (!rdma_ib_or_iboe(device, i))
> +		if (!cap_ib_mad(device, i))
>  			continue;
>  
>  		if (ib_agent_port_close(device, i))
> diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
> index 71fc8ba..b52884b 100644
> --- a/drivers/infiniband/core/user_mad.c
> +++ b/drivers/infiniband/core/user_mad.c
> @@ -1294,7 +1294,7 @@ static void ib_umad_add_one(struct ib_device *device)
>  	umad_dev->end_port   = e;
>  
>  	for (i = s; i <= e; ++i) {
> -		if (!rdma_ib_or_iboe(device, i))
> +		if (!cap_ib_mad(device, i))
>  			continue;
>  
>  		umad_dev->port[i - s].umad_dev = umad_dev;
> @@ -1317,7 +1317,7 @@ static void ib_umad_add_one(struct ib_device *device)
>  
>  err:
>  	while (--i >= s) {
> -		if (!rdma_ib_or_iboe(device, i))
> +		if (!cap_ib_mad(device, i))
>  			continue;
>  
>  		ib_umad_kill_port(&umad_dev->port[i - s]);
> @@ -1335,7 +1335,7 @@ static void ib_umad_remove_one(struct ib_device *device)
>  		return;
>  
>  	for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i) {
> -		if (rdma_ib_or_iboe(device, i))
> +		if (cap_ib_mad(device, i))
>  			ib_umad_kill_port(&umad_dev->port[i]);
>  	}
>  
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index a12e876..624e963 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -1773,6 +1773,21 @@ static inline int rdma_ib_or_iboe(struct ib_device *device, u8 port_num)
>  	return (tp == RDMA_TRANSPORT_IB || tp == RDMA_TRANSPORT_IBOE);
>  }
>  
> +/**
> + * cap_ib_mad - Check if the port of device has the capability Infiniband
> + * Management Datagrams.
> + *
> + * @device: Device to be checked
> + * @port_num: Port number of the device
> + *
> + * Return 0 when port of the device don't support Infiniband
> + * Management Datagrams.
> + */
> +static inline int cap_ib_mad(struct ib_device *device, u8 port_num)
> +{
> +	return rdma_ib_or_iboe(device, port_num);
> +}
> +
>  int ib_query_gid(struct ib_device *device,
>  		 u8 port_num, int index, union ib_gid *gid);
>  
> -- 
> 2.1.0
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