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>

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 5dd9acb..b6a33b3 100644 (file)
--- 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;