Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[sfrench/cifs-2.6.git] / drivers / net / ethernet / mellanox / mlx4 / qp.c

diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 07198cacbb20d509d1a002ddd8096364c0c10e16..40af619479254d10e8db34092c53ab223e259bb8 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -389,6 +389,41 @@ err_icm:
 
 EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
 
+#define MLX4_UPDATE_QP_SUPPORTED_ATTRS MLX4_UPDATE_QP_SMAC
+int mlx4_update_qp(struct mlx4_dev *dev, struct mlx4_qp *qp,
+                  enum mlx4_update_qp_attr attr,
+                  struct mlx4_update_qp_params *params)
+{
+       struct mlx4_cmd_mailbox *mailbox;
+       struct mlx4_update_qp_context *cmd;
+       u64 pri_addr_path_mask = 0;
+       int err = 0;
+
+       mailbox = mlx4_alloc_cmd_mailbox(dev);
+       if (IS_ERR(mailbox))
+               return PTR_ERR(mailbox);
+
+       cmd = (struct mlx4_update_qp_context *)mailbox->buf;
+
+       if (!attr || (attr & ~MLX4_UPDATE_QP_SUPPORTED_ATTRS))
+               return -EINVAL;
+
+       if (attr & MLX4_UPDATE_QP_SMAC) {
+               pri_addr_path_mask |= 1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX;
+               cmd->qp_context.pri_path.grh_mylmc = params->smac_index;
+       }
+
+       cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask);
+
+       err = mlx4_cmd(dev, mailbox->dma, qp->qpn & 0xffffff, 0,
+                      MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A,
+                      MLX4_CMD_NATIVE);
+
+       mlx4_free_cmd_mailbox(dev, mailbox);
+       return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_update_qp);
+
 void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp)
 {
        struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;