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: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/cma.c | 28 ++++++++++++++++++++++++++++
include/rdma/rdma_cm.h | 3 +++
2 files changed, 31 insertions(+)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 8c85b24..f841953 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -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);
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index 6909347..c5c1435 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -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 */
--
1.8.3.1
--
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