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net/mlx4: add link up/down callback functions

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Implement dev_set_link_up and dev_set_link_down device
operations. Code is inspired by mlx5 implementations.

Signed-off-by: Fengtian Guo <fengtian.guo@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
This commit is contained in:
Fengtian Guo 2016-07-04 10:24:19 +02:00 committed by Bruce Richardson
parent 3d04e05055
commit b12a4c911a
1 changed files with 86 additions and 0 deletions
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86
drivers/net/mlx4/mlx4.c
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@ -4327,6 +4327,90 @@ mlx4_dev_close(struct rte_eth_dev *dev)
memset(priv, 0, sizeof(*priv));
}
/**
* Change the link state (UP / DOWN).
*
* @param priv
* Pointer to Ethernet device private data.
* @param up
* Nonzero for link up, otherwise link down.
*
* @return
* 0 on success, errno value on failure.
*/
static int
priv_set_link(struct priv *priv, int up)
{
struct rte_eth_dev *dev = priv->dev;
int err;
unsigned int i;
if (up) {
err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
if (err)
return err;
for (i = 0; i < priv->rxqs_n; i++)
if ((*priv->rxqs)[i]->sp)
break;
/* Check if an sp queue exists.
* Note: Some old frames might be received.
*/
if (i == priv->rxqs_n)
dev->rx_pkt_burst = mlx4_rx_burst;
else
dev->rx_pkt_burst = mlx4_rx_burst_sp;
dev->tx_pkt_burst = mlx4_tx_burst;
} else {
err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
if (err)
return err;
dev->rx_pkt_burst = removed_rx_burst;
dev->tx_pkt_burst = removed_tx_burst;
}
return 0;
}
/**
* DPDK callback to bring the link DOWN.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, errno value on failure.
*/
static int
mlx4_set_link_down(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
priv_lock(priv);
err = priv_set_link(priv, 0);
priv_unlock(priv);
return err;
}
/**
* DPDK callback to bring the link UP.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, errno value on failure.
*/
static int
mlx4_set_link_up(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
priv_lock(priv);
err = priv_set_link(priv, 1);
priv_unlock(priv);
return err;
}
/**
* DPDK callback to get information about the device.
*
@ -5134,6 +5218,8 @@ static const struct eth_dev_ops mlx4_dev_ops = {
.dev_configure = mlx4_dev_configure,
.dev_start = mlx4_dev_start,
.dev_stop = mlx4_dev_stop,
.dev_set_link_down = mlx4_set_link_down,
.dev_set_link_up = mlx4_set_link_up,
.dev_close = mlx4_dev_close,
.promiscuous_enable = mlx4_promiscuous_enable,
.promiscuous_disable = mlx4_promiscuous_disable,