[PATCH] Add ethtool -g support to Spidernet network driver

Add ethtool -g (show ring sizes) support to the Spidernet network driver.

Signed-off-by: James K Lewis <jklewis@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/net/spider_net_ethtool.c b/drivers/net/spider_net_ethtool.c
index a5bb0b7633af..02209222b8c9 100644
--- a/drivers/net/spider_net_ethtool.c
+++ b/drivers/net/spider_net_ethtool.c
@@ -130,6 +130,18 @@ spider_net_ethtool_set_tx_csum(struct net_device *netdev, uint32_t data)
         return 0;
 }
 
+static void
+spider_net_ethtool_get_ringparam(struct net_device *netdev,
+                                 struct ethtool_ringparam *ering)
+{
+        struct spider_net_card *card = netdev->priv;
+
+        ering->tx_max_pending = SPIDER_NET_TX_DESCRIPTORS_MAX;
+        ering->tx_pending = card->tx_desc;
+        ering->rx_max_pending = SPIDER_NET_RX_DESCRIPTORS_MAX;
+        ering->rx_pending = card->rx_desc;
+}
+
 struct ethtool_ops spider_net_ethtool_ops = {
         .get_settings           = spider_net_ethtool_get_settings,
         .get_drvinfo            = spider_net_ethtool_get_drvinfo,
@@ -141,5 +153,6 @@ struct ethtool_ops spider_net_ethtool_ops = {
         .set_rx_csum            = spider_net_ethtool_set_rx_csum,
         .get_tx_csum            = spider_net_ethtool_get_tx_csum,
         .set_tx_csum            = spider_net_ethtool_set_tx_csum,
+        .get_ringparam          = spider_net_ethtool_get_ringparam,
 };