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ar71xx: ag71xx: make ring sizes configurable via ethtool

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SVN-Revision: 27041
This commit is contained in:
Gabor Juhos 2011-05-31 22:53:10 +00:00
parent 7a2651f633
commit 60d5abbc27
2 changed files with 56 additions and 0 deletions
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3
target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
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@ -57,6 +57,9 @@
#define AG71XX_TX_RING_SIZE_DEFAULT 64
#define AG71XX_RX_RING_SIZE_DEFAULT 128
#define AG71XX_TX_RING_SIZE_MAX 256
#define AG71XX_RX_RING_SIZE_MAX 256
#ifdef CONFIG_AG71XX_DEBUG
#define DBG(fmt, args...) printk(KERN_DEBUG fmt, ## args)
#else

53
target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
View file

@ -61,11 +61,64 @@ static void ag71xx_ethtool_set_msglevel(struct net_device *dev, u32 msg_level)
ag->msg_enable = msg_level;
}
static void ag71xx_ethtool_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *er)
{
struct ag71xx *ag = netdev_priv(dev);
er->tx_max_pending = AG71XX_TX_RING_SIZE_MAX;
er->rx_max_pending = AG71XX_RX_RING_SIZE_MAX;
er->rx_mini_max_pending = 0;
er->rx_jumbo_max_pending = 0;
er->tx_pending = ag->tx_ring.size;
er->rx_pending = ag->rx_ring.size;
er->rx_mini_pending = 0;
er->rx_jumbo_pending = 0;
}
static int ag71xx_ethtool_set_ringparam(struct net_device *dev,
struct ethtool_ringparam *er)
{
struct ag71xx *ag = netdev_priv(dev);
unsigned tx_size;
unsigned rx_size;
int err;
if (er->rx_mini_pending != 0||
er->rx_jumbo_pending != 0 ||
er->rx_pending == 0 ||
er->tx_pending == 0)
return -EINVAL;
tx_size = er->tx_pending < AG71XX_TX_RING_SIZE_MAX ?
er->tx_pending : AG71XX_TX_RING_SIZE_MAX;
rx_size = er->rx_pending < AG71XX_RX_RING_SIZE_MAX ?
er->rx_pending : AG71XX_RX_RING_SIZE_MAX;
if (netif_running(dev)) {
err = dev->netdev_ops->ndo_stop(dev);
if (err)
return err;
}
ag->tx_ring.size = tx_size;
ag->rx_ring.size = rx_size;
if (netif_running(dev))
err = dev->netdev_ops->ndo_open(dev);
return err;
}
struct ethtool_ops ag71xx_ethtool_ops = {
.set_settings = ag71xx_ethtool_set_settings,
.get_settings = ag71xx_ethtool_get_settings,
.get_drvinfo = ag71xx_ethtool_get_drvinfo,
.get_msglevel = ag71xx_ethtool_get_msglevel,
.set_msglevel = ag71xx_ethtool_set_msglevel,
.get_ringparam = ag71xx_ethtool_get_ringparam,
.set_ringparam = ag71xx_ethtool_set_ringparam,
.get_link = ethtool_op_get_link,
};