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Commit fbdb0a91 authored by Steve Wise's avatar Steve Wise Committed by Doug Ledford
Browse files

RDMA/CMA: add rdma_iw_cm_id() and rdma_res_to_id() helpers 



Add a helper function for iwarp drivers to be able to map an
rdma_cm_id to an iw_cm_id.  This is useful for dumping driver specific
NLDEV/RESTRACK connection state.

Add a helper to return the rdma_cm_id pointer from the rdma_restack
pointer.  This is needed for rdma drivers to map a res entry back to
the public rdma_cm_id struct.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent b06f2efd

drivers/infiniband/core/cma.c

+28 −0
Original line number Diff line number Diff line
@@ -146,6 +146,34 @@ const void *rdma_consumer_reject_data(struct rdma_cm_id *id, 
}

EXPORT_SYMBOL(rdma_consumer_reject_data);



/**

 * rdma_iw_cm_id() - return the iw_cm_id pointer for this cm_id.

 * @id: Communication Identifier

 */

struct iw_cm_id *rdma_iw_cm_id(struct rdma_cm_id *id)

{

	struct rdma_id_private *id_priv;



	id_priv = container_of(id, struct rdma_id_private, id);

	if (id->device->node_type == RDMA_NODE_RNIC)

		return id_priv->cm_id.iw;

	return NULL;

}

EXPORT_SYMBOL(rdma_iw_cm_id);



/**

 * rdma_res_to_id() - return the rdma_cm_id pointer for this restrack.

 * @res: rdma resource tracking entry pointer

 */

struct rdma_cm_id *rdma_res_to_id(struct rdma_restrack_entry *res)

{

	struct rdma_id_private *id_priv =

		container_of(res, struct rdma_id_private, res);



	return &id_priv->id;

}

EXPORT_SYMBOL(rdma_res_to_id);



static void cma_add_one(struct ib_device *device);

static void cma_remove_one(struct ib_device *device, void *client_data);

include/rdma/rdma_cm.h

+3 −0
Original line number Diff line number Diff line
@@ -420,4 +420,7 @@ const void *rdma_consumer_reject_data(struct rdma_cm_id *id, 
void rdma_read_gids(struct rdma_cm_id *cm_id, union ib_gid *sgid,

		    union ib_gid *dgid);



struct iw_cm_id *rdma_iw_cm_id(struct rdma_cm_id *cm_id);

struct rdma_cm_id *rdma_res_to_id(struct rdma_restrack_entry *res);



#endif /* RDMA_CM_H */