common/mlx5: fix user mode register access attribute

[dpdk.git] / drivers / common / mlx5 / linux / mlx5_common_os.h

diff --git a/drivers/common/mlx5/linux/mlx5_common_os.h b/drivers/common/mlx5/linux/mlx5_common_os.h
index c2957f9..83066e7 100644 (file)
--- a/drivers/common/mlx5/linux/mlx5_common_os.h
+++ b/drivers/common/mlx5/linux/mlx5_common_os.h
@@ -284,4 +284,23 @@ mlx5_os_free(void *addr)
 void
 mlx5_set_context_attr(struct rte_device *dev, struct ibv_context *ctx);
 
+/**
+ * This is used to query system_image_guid as describing in PRM.
+ *
+ * @param dev[in]
+ *  Pointer to a device instance as PCIe id.
+ * @param guid[out]
+ *  Pointer to the buffer to hold device guid.
+ *  Guid is uint64_t and corresponding to 17 bytes string.
+ * @param len[in]
+ *  Guid buffer length, 17 bytes at least.
+ *
+ * @return
+ *  -1 if internal failure.
+ *  0 if OFED doesn't support.
+ *  >0 if success.
+ */
+int
+mlx5_get_device_guid(const struct rte_pci_addr *dev, uint8_t *guid, size_t len);
+
 #endif /* RTE_PMD_MLX5_COMMON_OS_H_ */