IB/mlx4: Fix CM REQ retries in paravirt mode

[karo-tx-linux.git] / drivers / infiniband / hw / mlx4 / cm.c

diff --git a/drivers/infiniband/hw/mlx4/cm.c b/drivers/infiniband/hw/mlx4/cm.c
index 1e6c526450d9ce8f93f165af1027b937e3db1847..fedaf82601054a38c10c67cc81cf92b0c0612953 100644 (file)
--- a/drivers/infiniband/hw/mlx4/cm.c
+++ b/drivers/infiniband/hw/mlx4/cm.c
@@ -323,6 +323,9 @@ int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id
                        mad->mad_hdr.attr_id == CM_REP_ATTR_ID ||
                        mad->mad_hdr.attr_id == CM_SIDR_REQ_ATTR_ID) {
                sl_cm_id = get_local_comm_id(mad);
+               id = id_map_get(ibdev, &pv_cm_id, slave_id, sl_cm_id);
+               if (id)
+                       goto cont;
                id = id_map_alloc(ibdev, slave_id, sl_cm_id);
                if (IS_ERR(id)) {
                        mlx4_ib_warn(ibdev, "%s: id{slave: %d, sl_cm_id: 0x%x} Failed to id_map_alloc\n",
@@ -343,6 +346,7 @@ int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id
                return -EINVAL;
        }
 
+cont:
        set_local_comm_id(mad, id->pv_cm_id);
 
        if (mad->mad_hdr.attr_id == CM_DREQ_ATTR_ID)