[PATCH v3 1/2] ethdev: define a function to get eth dev structure
Kumara Parameshwaran
kumaraparamesh92 at gmail.com
Mon Jan 31 15:32:33 CET 2022
From: Kumara Parameshwaran <kparameshwar at vmware.com>
The PMDs would need a function to access the rte_eth_devices
global array
Cc: stable at dpdk.org
Signed-off-by: Kumara Parameshwaran <kparameshwar at vmware.com>
---
lib/ethdev/ethdev_driver.h | 18 ++++++++++++++++++
lib/ethdev/rte_ethdev.c | 11 +++++++++++
lib/ethdev/version.map | 1 +
3 files changed, 30 insertions(+)
diff --git a/lib/ethdev/ethdev_driver.h b/lib/ethdev/ethdev_driver.h
index d95605a355..7d27781f7d 100644
--- a/lib/ethdev/ethdev_driver.h
+++ b/lib/ethdev/ethdev_driver.h
@@ -1629,6 +1629,24 @@ rte_eth_hairpin_queue_peer_bind(uint16_t cur_port, uint16_t cur_queue,
struct rte_hairpin_peer_info *peer_info,
uint32_t direction);
+/**
+ * @internal
+ * Get rte_eth_dev from device name. The device name should be specified
+ * as below:
+ * - PCIe address (Domain:Bus:Device.Function), for example- 0000:2:00.0
+ * - SoC device name, for example- fsl-gmac0
+ * - vdev dpdk name, for example- net_[pcap0|null0|tap0]
+ *
+ * @param name
+ * pci address or name of the device
+ * @return
+ * - rte_eth_dev if successful
+ * - NULL on failure
+ */
+__rte_internal
+struct rte_eth_dev*
+rte_eth_dev_get_by_name(const char *name);
+
/**
* @internal
* Reset the current queue state and configuration to disconnect (unbind) it
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index a1d475a292..968475d107 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -894,6 +894,17 @@ rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id)
return -ENODEV;
}
+struct rte_eth_dev *
+rte_eth_dev_get_by_name(const char *name)
+{
+ uint16_t pid;
+
+ if (rte_eth_dev_get_port_by_name(name, &pid))
+ return NULL;
+
+ return &rte_eth_devices[pid];
+}
+
static int
eth_err(uint16_t port_id, int ret)
{
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index c2fb0669a4..1f7359c846 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -267,6 +267,7 @@ INTERNAL {
rte_eth_dev_callback_process;
rte_eth_dev_create;
rte_eth_dev_destroy;
+ rte_eth_dev_get_by_name;
rte_eth_dev_is_rx_hairpin_queue;
rte_eth_dev_is_tx_hairpin_queue;
rte_eth_dev_probing_finish;
--
2.17.1
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