RDMA/cma: Save PID of ID's owner

Save the PID associated with an RDMA CM ID for reporting via netlink.

Signed-off-by: Nir Muchtar <nirm@voltaire.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 5dd9acb92c3a..b6a33b3c516d 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -133,6 +133,7 @@ struct rdma_id_private {
         u32                     seq_num;
         u32                     qkey;
         u32                     qp_num;
+        pid_t                   owner;
         u8                      srq;
         u8                      tos;
         u8                      reuseaddr;
@@ -420,6 +421,7 @@ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler,
         if (!id_priv)
                 return ERR_PTR(-ENOMEM);
 
+        id_priv->owner = task_pid_nr(current);
         id_priv->state = RDMA_CM_IDLE;
         id_priv->id.context = context;
         id_priv->id.event_handler = event_handler;
@@ -2746,6 +2748,9 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
         int ret;
 
         id_priv = container_of(id, struct rdma_id_private, id);
+
+        id_priv->owner = task_pid_nr(current);
+
         if (!cma_comp(id_priv, RDMA_CM_CONNECT))
                 return -EINVAL;
 
@@ -3385,6 +3390,7 @@ static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb)
                                 }
                         }
 
+                        id_stats->pid           = id_priv->owner;
                         id_stats->port_space    = id->ps;
                         id_stats->cm_state      = id_priv->state;
                         id_stats->qp_num        = id_priv->qp_num;