Re: [PATCH v5 18/27] IB/Verbs: Use management helper cap_ib_cm()

[ira.weiny]

On Mon, Apr 20, 2015 at 10:40:04AM +0200, Michael Wang wrote:
> 
> Introduce helper cap_ib_cm() to help us check if the port of an
> IB device support Infiniband Communication Manager.
> 
> Cc: Hal Rosenstock <hal@xxxxxxxxxxxxxxxxxx>
> Cc: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
> Cc: Tom Talpey <tom@xxxxxxxxxx>
> Cc: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
> Cc: Doug Ledford <dledford@xxxxxxxxxx>
> Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
> Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
> Signed-off-by: Michael Wang <yun.wang@xxxxxxxxxxxxxxxx>

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

> ---
>  drivers/infiniband/core/cm.c  |  6 +++---
>  drivers/infiniband/core/cma.c | 19 +++++++++----------
>  drivers/infiniband/core/ucm.c |  2 +-
>  include/rdma/ib_verbs.h       | 15 +++++++++++++++
>  4 files changed, 28 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
> index 3c10b75..eae4c9f 100644
> --- a/drivers/infiniband/core/cm.c
> +++ b/drivers/infiniband/core/cm.c
> @@ -3781,7 +3781,7 @@ static void cm_add_one(struct ib_device *ib_device)
>  
>  	set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
>  	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
> -		if (!rdma_ib_or_iboe(ib_device, i))
> +		if (!cap_ib_cm(ib_device, i))
>  			continue;
>  
>  		port = kzalloc(sizeof *port, GFP_KERNEL);
> @@ -3832,7 +3832,7 @@ error1:
>  	port_modify.set_port_cap_mask = 0;
>  	port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
>  	while (--i) {
> -		if (!rdma_ib_or_iboe(ib_device, i))
> +		if (!cap_ib_cm(ib_device, i))
>  			continue;
>  
>  		port = cm_dev->port[i-1];
> @@ -3864,7 +3864,7 @@ static void cm_remove_one(struct ib_device *ib_device)
>  	write_unlock_irqrestore(&cm.device_lock, flags);
>  
>  	for (i = 1; i <= ib_device->phys_port_cnt; i++) {
> -		if (!rdma_ib_or_iboe(ib_device, i))
> +		if (!cap_ib_cm(ib_device, i))
>  			continue;
>  
>  		port = cm_dev->port[i-1];
> diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
> index ec64b97..ff59dbc 100644
> --- a/drivers/infiniband/core/cma.c
> +++ b/drivers/infiniband/core/cma.c
> @@ -766,7 +766,7 @@ int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
>  	int ret = 0;
>  
>  	id_priv = container_of(id, struct rdma_id_private, id);
> -	if (rdma_ib_or_iboe(id->device, id->port_num)) {
> +	if (cap_ib_cm(id->device, id->port_num)) {
>  		if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD))
>  			ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask);
>  		else
> @@ -1054,7 +1054,7 @@ void rdma_destroy_id(struct rdma_cm_id *id)
>  	mutex_unlock(&id_priv->handler_mutex);
>  
>  	if (id_priv->cma_dev) {
> -		if (rdma_ib_or_iboe(id_priv->id.device, 1)) {
> +		if (cap_ib_cm(id_priv->id.device, 1)) {
>  			if (id_priv->cm_id.ib)
>  				ib_destroy_cm_id(id_priv->cm_id.ib);
>  		} else if (rdma_tech_iwarp(id_priv->id.device, 1)) {
> @@ -1637,8 +1637,7 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
>  	struct rdma_cm_id *id;
>  	int ret;
>  
> -	if (cma_family(id_priv) == AF_IB &&
> -	    !rdma_ib_or_iboe(cma_dev->device, 1))
> +	if (cma_family(id_priv) == AF_IB && !cap_ib_cm(cma_dev->device, 1))
>  		return;
>  
>  	id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps,
> @@ -2029,7 +2028,7 @@ static int cma_bind_loopback(struct rdma_id_private *id_priv)
>  	mutex_lock(&lock);
>  	list_for_each_entry(cur_dev, &dev_list, list) {
>  		if (cma_family(id_priv) == AF_IB &&
> -		    !rdma_ib_or_iboe(cur_dev->device, 1))
> +		    !cap_ib_cm(cur_dev->device, 1))
>  			continue;
>  
>  		if (!cma_dev)
> @@ -2538,7 +2537,7 @@ int rdma_listen(struct rdma_cm_id *id, int backlog)
>  
>  	id_priv->backlog = backlog;
>  	if (id->device) {
> -		if (rdma_ib_or_iboe(id->device, 1)) {
> +		if (cap_ib_cm(id->device, 1)) {
>  			ret = cma_ib_listen(id_priv);
>  			if (ret)
>  				goto err;
> @@ -2882,7 +2881,7 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
>  		id_priv->srq = conn_param->srq;
>  	}
>  
> -	if (rdma_ib_or_iboe(id->device, id->port_num)) {
> +	if (cap_ib_cm(id->device, id->port_num)) {
>  		if (id->qp_type == IB_QPT_UD)
>  			ret = cma_resolve_ib_udp(id_priv, conn_param);
>  		else
> @@ -2993,7 +2992,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
>  		id_priv->srq = conn_param->srq;
>  	}
>  
> -	if (rdma_ib_or_iboe(id->device, id->port_num)) {
> +	if (cap_ib_cm(id->device, id->port_num)) {
>  		if (id->qp_type == IB_QPT_UD) {
>  			if (conn_param)
>  				ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,
> @@ -3056,7 +3055,7 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
>  	if (!id_priv->cm_id.ib)
>  		return -EINVAL;
>  
> -	if (rdma_ib_or_iboe(id->device, id->port_num)) {
> +	if (cap_ib_cm(id->device, id->port_num)) {
>  		if (id->qp_type == IB_QPT_UD)
>  			ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0,
>  						private_data, private_data_len);
> @@ -3083,7 +3082,7 @@ int rdma_disconnect(struct rdma_cm_id *id)
>  	if (!id_priv->cm_id.ib)
>  		return -EINVAL;
>  
> -	if (rdma_ib_or_iboe(id->device, id->port_num)) {
> +	if (cap_ib_cm(id->device, id->port_num)) {
>  		ret = cma_modify_qp_err(id_priv);
>  		if (ret)
>  			goto out;
> diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
> index 70e0ccb..f7290c8 100644
> --- a/drivers/infiniband/core/ucm.c
> +++ b/drivers/infiniband/core/ucm.c
> @@ -1253,7 +1253,7 @@ static void ib_ucm_add_one(struct ib_device *device)
>  	dev_t base;
>  	struct ib_ucm_device *ucm_dev;
>  
> -	if (!device->alloc_ucontext || !rdma_ib_or_iboe(device, 1))
> +	if (!device->alloc_ucontext || !cap_ib_cm(device, 1))
>  		return;
>  
>  	ucm_dev = kzalloc(sizeof *ucm_dev, GFP_KERNEL);
> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
> index 873b9a6..6805e3e 100644
> --- a/include/rdma/ib_verbs.h
> +++ b/include/rdma/ib_verbs.h
> @@ -1803,6 +1803,21 @@ static inline int cap_ib_smi(struct ib_device *device, u8 port_num)
>  	return rdma_tech_ib(device, port_num);
>  }
>  
> +/**
> + * cap_ib_cm - Check if the port of device has the capability Infiniband
> + * Communication Manager.
> + *
> + * @device: Device to be checked
> + * @port_num: Port number of the device
> + *
> + * Return 0 when port of the device don't support Infiniband
> + * Communication Manager.
> + */
> +static inline int cap_ib_cm(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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