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ethdev: API for link up and down

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This patch adds API to support the functionality of setting link up and down.
It can be used to repeatedly stop and restart RX/TX of a port without
re-allocating resources for the port and re-configuring the port.

Signed-off-by: Ouyang Changchun <changchun.ouyang@intel.com>
Tested-by: Waterman Cao <waterman.cao@intel.com>
Acked by: Ivan Boule <ivan.boule@6wind.com>
This commit is contained in:
Ouyang Changchun 2014-05-28 15:15:00 +08:00 committed by Thomas Monjalon
parent 1d99384f4d
commit 915e678375
2 changed files with 72 additions and 0 deletions
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38
lib/librte_ether/rte_ethdev.c
View File

@ -814,6 +814,44 @@ rte_eth_dev_stop(uint8_t port_id)
(*dev->dev_ops->dev_stop)(dev);
}
int
rte_eth_dev_set_link_up(uint8_t port_id)
{
struct rte_eth_dev *dev;
/* This function is only safe when called from the primary process
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
if (port_id >= nb_ports) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_set_link_up, -ENOTSUP);
return (*dev->dev_ops->dev_set_link_up)(dev);
}
int
rte_eth_dev_set_link_down(uint8_t port_id)
{
struct rte_eth_dev *dev;
/* This function is only safe when called from the primary process
* in a multi-process setup*/
PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
if (port_id >= nb_ports) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
return -EINVAL;
}
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_set_link_down, -ENOTSUP);
return (*dev->dev_ops->dev_set_link_down)(dev);
}
void
rte_eth_dev_close(uint8_t port_id)
{

34
lib/librte_ether/rte_ethdev.h
View File

@ -828,6 +828,12 @@ typedef int (*eth_dev_start_t)(struct rte_eth_dev *dev);
typedef void (*eth_dev_stop_t)(struct rte_eth_dev *dev);
/**< @internal Function used to stop a configured Ethernet device. */
typedef int (*eth_dev_set_link_up_t)(struct rte_eth_dev *dev);
/**< @internal Function used to link up a configured Ethernet device. */
typedef int (*eth_dev_set_link_down_t)(struct rte_eth_dev *dev);
/**< @internal Function used to link down a configured Ethernet device. */
typedef void (*eth_dev_close_t)(struct rte_eth_dev *dev);
/**< @internal Function used to close a configured Ethernet device. */
@ -1105,6 +1111,8 @@ struct eth_dev_ops {
eth_dev_configure_t dev_configure; /**< Configure device. */
eth_dev_start_t dev_start; /**< Start device. */
eth_dev_stop_t dev_stop; /**< Stop device. */
eth_dev_set_link_up_t dev_set_link_up; /**< Device link up. */
eth_dev_set_link_down_t dev_set_link_down; /**< Device link down. */
eth_dev_close_t dev_close; /**< Close device. */
eth_promiscuous_enable_t promiscuous_enable; /**< Promiscuous ON. */
eth_promiscuous_disable_t promiscuous_disable;/**< Promiscuous OFF. */
@ -1569,6 +1577,32 @@ extern int rte_eth_dev_start(uint8_t port_id);
*/
extern void rte_eth_dev_stop(uint8_t port_id);
/**
* Link up an Ethernet device.
*
* Set device link up will re-enable the device rx/tx
* functionality after it is previously set device linked down.
*
* @param port_id
* The port identifier of the Ethernet device.
* @return
* - 0: Success, Ethernet device linked up.
* - <0: Error code of the driver device link up function.
*/
extern int rte_eth_dev_set_link_up(uint8_t port_id);
/**
* Link down an Ethernet device.
* The device rx/tx functionality will be disabled if success,
* and it can be re-enabled with a call to
* rte_eth_dev_set_link_up()
*
* @param port_id
* The port identifier of the Ethernet device.
*/
extern int rte_eth_dev_set_link_down(uint8_t port_id);
/**
* Close an Ethernet device. The device cannot be restarted!
*