The driver may change offloads info into dev->data->dev_conf
in dev_configure which may cause apps use outdated values.
Add a new API to get actual device configuration.
Acked-by: Andrew Rybchenko <andrew.rybche...@oktetlabs.ru>
Signed-off-by: Jie Wang <jie1x.w...@intel.com>
---
doc/guides/rel_notes/release_21_11.rst | 4 ++++
lib/ethdev/rte_ethdev.c | 20 ++++++++++++++++++++
lib/ethdev/rte_ethdev.h | 18 ++++++++++++++++++
lib/ethdev/version.map | 1 +
4 files changed, 43 insertions(+)
diff --git a/doc/guides/rel_notes/release_21_11.rst
b/doc/guides/rel_notes/release_21_11.rst
index d5c762df62..5292149981 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -81,6 +81,10 @@ New Features
* Default VLAN strip behavior was changed. VLAN tag won't be stripped
unless ``DEV_RX_OFFLOAD_VLAN_STRIP`` offload is enabled.
+* **Added support for users get device configuration in ethdev.**
+
+ Added an ethdev API which can help users get device configuration.
+
* **Updated AF_XDP PMD.**
* Disabled secondary process support.
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 5fae7357c8..063e4925f8 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -3437,6 +3437,26 @@ rte_eth_dev_info_get(uint16_t port_id, struct
rte_eth_dev_info *dev_info)
return 0;
}
+int
+rte_eth_dev_conf_get(uint16_t port_id, struct rte_eth_conf *dev_conf)
+{
+ struct rte_eth_dev *dev;
+
+ RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+ dev = &rte_eth_devices[port_id];
+
+ if (dev_conf == NULL) {
+ RTE_ETHDEV_LOG(ERR,
+ "Cannot get ethdev port %u configuration to NULL\n",
+ port_id);
+ return -EINVAL;
+ }
+
+ memcpy(dev_conf, &dev->data->dev_conf, sizeof(struct rte_eth_conf));
+
+ return 0;
+}
+
int
rte_eth_dev_get_supported_ptypes(uint16_t port_id, uint32_t ptype_mask,
uint32_t *ptypes, int num)
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index cb847a2c38..58d10e5699 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -3052,6 +3052,24 @@ int rte_eth_macaddr_get(uint16_t port_id, struct
rte_ether_addr *mac_addr);
*/
int rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Retrieve the configuration of an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param dev_conf
+ * Location for Ethernet device configuration to be filled in.
+ * @return
+ * - (0) if successful.
+ * - (-ENODEV) if *port_id* invalid.
+ * - (-EINVAL) if bad parameter.
+ */
+__rte_experimental
+int rte_eth_dev_conf_get(uint16_t port_id, struct rte_eth_conf *dev_conf);
+
/**
* Retrieve the firmware version of a device.
*
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 29fb71f1af..4debda513b 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -247,6 +247,7 @@ EXPERIMENTAL {
rte_mtr_meter_policy_validate;
# added in 21.11
+ rte_eth_dev_conf_get;
rte_eth_rx_metadata_negotiate;
};
--
2.25.1
