[dpdk-dev,v3,1/5] ethdev: add access to eeprom

diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index 1b4fb97..bb183e2 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -749,6 +749,17 @@  Supports getting/setting device eeprom data.
   ``rte_eth_dev_set_eeprom()``.
 
 
+.. _nic_features_module_eeprom_dump:
+
+Module EEPROM dump
+------------------
+
+Supports getting information and data of plugin module eeprom.
+
+* **[implements] eth_dev_ops**: ``get_module_info``, ``get_module_eeprom``.
+* **[related]    API**: ``rte_eth_dev_get_module_info()``, ``rte_eth_dev_get_module_eeprom()``.
+
+
 .. _nic_features_register_dump:
 
 Registers dump
diff --git a/lib/librte_ether/rte_dev_info.h b/lib/librte_ether/rte_dev_info.h
index 6b68584..c15a0fa 100644
--- a/lib/librte_ether/rte_dev_info.h
+++ b/lib/librte_ether/rte_dev_info.h
@@ -28,4 +28,22 @@  struct rte_dev_eeprom_info {
 	uint32_t magic; /**< Device-specific key, such as device-id */
 };
 
+/*
+ * Placeholder for accessing plugin module eeprom
+ */
+struct rte_dev_module_info {
+	uint32_t type; /**< Type of plugin module eeprom */
+	uint32_t eeprom_len; /**< Length of plugin module eeprom */
+};
+
+/* EEPROM Standards for plug in modules */
+#define ETH_MODULE_SFF_8079             0x1
+#define ETH_MODULE_SFF_8079_LEN         256
+#define ETH_MODULE_SFF_8472             0x2
+#define ETH_MODULE_SFF_8472_LEN         512
+#define ETH_MODULE_SFF_8636             0x3
+#define ETH_MODULE_SFF_8636_LEN         256
+#define ETH_MODULE_SFF_8436             0x4
+#define ETH_MODULE_SFF_8436_LEN         256
+
 #endif /* _RTE_DEV_INFO_H_ */
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 0590f0c..b83643d 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -4044,6 +4044,32 @@  int rte_eth_set_queue_rate_limit(uint16_t port_id, uint16_t queue_idx,
 }
 
 int
+rte_eth_dev_get_module_info(uint16_t port_id,
+			    struct rte_dev_module_info *modinfo)
+{
+	struct rte_eth_dev *dev;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+
+	dev = &rte_eth_devices[port_id];
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->get_module_info, -ENOTSUP);
+	return (*dev->dev_ops->get_module_info)(dev, modinfo);
+}
+
+	int
+rte_eth_dev_get_module_eeprom(uint16_t port_id,
+		struct rte_dev_eeprom_info *info)
+{
+	struct rte_eth_dev *dev;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+
+	dev = &rte_eth_devices[port_id];
+	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->get_module_eeprom, -ENOTSUP);
+	return (*dev->dev_ops->get_module_eeprom)(dev, info);
+}
+
+int
 rte_eth_dev_get_dcb_info(uint16_t port_id,
 			     struct rte_eth_dcb_info *dcb_info)
 {
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 0361533..e8b1d94 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -3262,6 +3262,41 @@  int rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
 int rte_eth_dev_set_eeprom(uint16_t port_id, struct rte_dev_eeprom_info *info);
 
 /**
+ * Retrieve the type and size of plugin module EEPROM
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param modinfo
+ *   The type and size of plugin module EEPROM.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EIO) if device is removed.
+ *   - others depends on the specific operations implementation.
+ */
+int rte_eth_dev_get_module_info(uint16_t port_id,
+				struct rte_dev_module_info *modinfo);
+
+/**
+ * Retrieve the data of plugin module EEPROM
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param info
+ *   The template includes the plugin module EEPROM attributes, and the
+ *   buffer for return plugin module EEPROM data.
+ * @return
+ *   - (0) if successful.
+ *   - (-ENOTSUP) if hardware doesn't support.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-EIO) if device is removed.
+ *   - others depends on the specific operations implementation.
+ */
+int rte_eth_dev_get_module_eeprom(uint16_t port_id,
+				  struct rte_dev_eeprom_info *info);
+
+/**
  * Set the list of multicast addresses to filter on an Ethernet device.
  *
  * @param port_id
diff --git a/lib/librte_ether/rte_ethdev_core.h b/lib/librte_ether/rte_ethdev_core.h
index e5681e4..26b5704 100644
--- a/lib/librte_ether/rte_ethdev_core.h
+++ b/lib/librte_ether/rte_ethdev_core.h
@@ -337,6 +337,14 @@  typedef int (*eth_set_eeprom_t)(struct rte_eth_dev *dev,
 				struct rte_dev_eeprom_info *info);
 /**< @internal Program eeprom data  */
 
+typedef int (*eth_get_module_info_t)(struct rte_eth_dev *dev,
+				     struct rte_dev_module_info *modinfo);
+/**< @internal Retrieve type and size of plugin module eeprom */
+
+typedef int (*eth_get_module_eeprom_t)(struct rte_eth_dev *dev,
+				       struct rte_dev_eeprom_info *info);
+/**< @internal Retrieve plugin module eeprom data */
+
 typedef int (*eth_l2_tunnel_eth_type_conf_t)
 	(struct rte_eth_dev *dev, struct rte_eth_l2_tunnel_conf *l2_tunnel);
 /**< @internal config l2 tunnel ether type */
@@ -467,6 +475,10 @@  struct eth_dev_ops {
 	eth_get_eeprom_t           get_eeprom;        /**< Get eeprom data. */
 	eth_set_eeprom_t           set_eeprom;        /**< Set eeprom. */
 
+	eth_get_module_info_t      get_module_info;
+	/** Get plugin module eeprom attribute. */
+	eth_get_module_eeprom_t    get_module_eeprom;
+	/** Get plugin module eeprom data. */
 
 	eth_filter_ctrl_t          filter_ctrl; /**< common filter control. */
 
diff --git a/lib/librte_ether/rte_ethdev_version.map b/lib/librte_ether/rte_ethdev_version.map
index 87f02fb..ae4b2ad 100644
--- a/lib/librte_ether/rte_ethdev_version.map
+++ b/lib/librte_ether/rte_ethdev_version.map
@@ -201,6 +201,8 @@  DPDK_18.02 {
 	global:
 
 	rte_eth_dev_filter_ctrl;
+	rte_eth_dev_get_module_info;
+	rte_eth_dev_get_module_eeprom;
 
 } DPDK_17.11;