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[dpdk-dev,v6,05/13] ethdev: Add rte_eth_dev_free to free specified device

Message ID 1422763322-13742-6-git-send-email-mukawa@igel.co.jp (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Tetsuya Mukawa Feb. 1, 2015, 4:01 a.m. UTC
This patch adds rte_eth_dev_free(). The function is used for changing a
attached status of the device that has specified name.

v6:
- Use rte_eth_dev structure as the paramter of rte_eth_dev_free().
v4:
- Add paramerter checking.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 lib/librte_ether/rte_ethdev.c | 11 +++++++++++
 lib/librte_ether/rte_ethdev.h | 14 ++++++++++++++
 2 files changed, 25 insertions(+)
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Patch

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index d70854f..b58bab3 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -260,6 +260,17 @@  rte_eth_dev_allocate(const char *name)
 	return eth_dev;
 }
 
+int
+rte_eth_dev_free(struct rte_eth_dev *eth_dev)
+{
+	if (eth_dev == NULL)
+		return -EINVAL;
+
+	eth_dev->attached = 0;
+	nb_ports--;
+	return 0;
+}
+
 static int
 rte_eth_dev_init(struct rte_pci_driver *pci_drv,
 		 struct rte_pci_device *pci_dev)
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index ca101f5..fbe7ac1 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1627,6 +1627,20 @@  extern uint8_t rte_eth_dev_count(void);
  */
 struct rte_eth_dev *rte_eth_dev_allocate(const char *name);
 
+/**
+ * Function for internal use by dummy drivers primarily, e.g. ring-based
+ * driver.
+ * Free the specified ethdev.
+ *
+ * @param eth_dev
+ * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
+ *   associated with the matching device and which have been [automatically]
+ *   allocated in the *rte_eth_devices* array.
+ * @return
+ *   - 0 on success, negative on error
+ */
+int rte_eth_dev_free(struct rte_eth_dev *eth_dev);
+
 struct eth_driver;
 /**
  * @internal