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authorGabor Juhos <juhosg@openwrt.org>2011-05-31 22:53:10 +0000
committerGabor Juhos <juhosg@openwrt.org>2011-05-31 22:53:10 +0000
commit60d5abbc27ac3dd71b72e38ab12e7ad710220dbb (patch)
tree35fbce4780986cfb344f3d19a8cad7d99b3b1ab8 /target/linux/ar71xx
parent7a2651f6334e8d8260714cccf73cee1b3fcdfb61 (diff)
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ar71xx: ag71xx: make ring sizes configurable via ethtool
SVN-Revision: 27041
Diffstat (limited to 'target/linux/ar71xx')
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h3
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c53
2 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index 64a82f1..1025bb4 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -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
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
index 1f1c6aa..498fbed 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_ethtool.c
@@ -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,
};