[dpdk-dev] [PATCH v3 03/15] common/mlx5: move description of PCI sysfs functions

[Xueming Li <xuemingl@nvidia.com>]

From: Thomas Monjalon <thomas@monjalon.net>

The Linux-specific functions mlx5_get_pci_addr() and
mlx5_get_ifname_sysfs() are better described in the .h file.

The requirement for using mlx5_get_pci_addr() is explicit:
the node /device must exist in the provided sysfs path.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
 drivers/common/mlx5/linux/mlx5_common_os.c | 22 ------------------
 drivers/common/mlx5/mlx5_common.h          | 26 ++++++++++++++++++++++
 2 files changed, 26 insertions(+), 22 deletions(-)

diff --git a/drivers/common/mlx5/linux/mlx5_common_os.c b/drivers/common/mlx5/linux/mlx5_common_os.c
index 78a9723075..337e9df8cb 100644
--- a/drivers/common/mlx5/linux/mlx5_common_os.c
+++ b/drivers/common/mlx5/linux/mlx5_common_os.c
@@ -23,17 +23,6 @@
 const struct mlx5_glue *mlx5_glue;
 #endif
 
-/**
- * Get PCI information by sysfs device path.
- *
- * @param dev_path
- *   Pointer to device sysfs folder name.
- * @param[out] pci_addr
- *   PCI bus address output buffer.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
 int
 mlx5_dev_to_pci_addr(const char *dev_path,
 		     struct rte_pci_addr *pci_addr)
@@ -159,17 +148,6 @@ mlx5_translate_port_name(const char *port_name_in,
 	port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
 }
 
-/**
- * Get kernel interface name from IB device path.
- *
- * @param[in] ibdev_path
- *   Pointer to IB device path.
- * @param[out] ifname
- *   Interface name output buffer.
- *
- * @return
- *   0 on success, a negative errno value otherwise and rte_errno is set.
- */
 int
 mlx5_get_ifname_sysfs(const char *ibdev_path, char *ifname)
 {
diff --git a/drivers/common/mlx5/mlx5_common.h b/drivers/common/mlx5/mlx5_common.h
index a2a69ebf5e..b83fdc204d 100644
--- a/drivers/common/mlx5/mlx5_common.h
+++ b/drivers/common/mlx5/mlx5_common.h
@@ -204,8 +204,34 @@ check_cqe(volatile struct mlx5_cqe *cqe, const uint16_t cqes_n,
 	return MLX5_CQE_STATUS_SW_OWN;
 }
 
+/*
+ * Get PCI address from sysfs of a PCI-related device.
+ *
+ * @param[in] dev_path
+ *   The sysfs path should not point to the direct plain PCI device.
+ *   Instead, the node "/device/" is used to access the real device.
+ * @param[out] pci_addr
+ *   Parsed PCI address.
+ *
+ * @return
+ *   - 0 on success.
+ *   - Negative value and rte_errno is set otherwise.
+ */
 __rte_internal
 int mlx5_dev_to_pci_addr(const char *dev_path, struct rte_pci_addr *pci_addr);
+
+/*
+ * Get kernel network interface name from sysfs IB device path.
+ *
+ * @param[in] ibdev_path
+ *   The sysfs path to IB device.
+ * @param[out] ifname
+ *   Interface name output of size IF_NAMESIZE.
+ *
+ * @return
+ *   - 0 on success.
+ *   - Negative value and rte_errno is set otherwise.
+ */
 __rte_internal
 int mlx5_get_ifname_sysfs(const char *ibdev_path, char *ifname);
 
-- 
2.25.1