wireless: add support for ethtool_ops->{get,set}_ringparam

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/net/wireless/ethtool.c b/net/wireless/ethtool.c
index ca4c825be93d..9bde4d1d3e9b 100644
--- a/net/wireless/ethtool.c
+++ b/net/wireless/ethtool.c
@@ -1,5 +1,6 @@
 #include <linux/utsname.h>
 #include <net/cfg80211.h>
+#include "core.h"
 #include "ethtool.h"
 
 static void cfg80211_get_drvinfo(struct net_device *dev,
@@ -37,9 +38,41 @@ static void cfg80211_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 	regs->len = 0;
 }
 
+static void cfg80211_get_ringparam(struct net_device *dev,
+				   struct ethtool_ringparam *rp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+	memset(rp, 0, sizeof(*rp));
+
+	if (rdev->ops->get_ringparam)
+		rdev->ops->get_ringparam(wdev->wiphy,
+					 &rp->tx_pending, &rp->tx_max_pending,
+					 &rp->rx_pending, &rp->rx_max_pending);
+}
+
+static int cfg80211_set_ringparam(struct net_device *dev,
+				  struct ethtool_ringparam *rp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+
+	if (rp->rx_mini_pending != 0 || rp->rx_jumbo_pending != 0)
+		return -EINVAL;
+
+	if (rdev->ops->set_ringparam)
+		return rdev->ops->set_ringparam(wdev->wiphy,
+						rp->tx_pending, rp->rx_pending);
+
+	return -ENOTSUPP;
+}
+
 const struct ethtool_ops cfg80211_ethtool_ops = {
 	.get_drvinfo = cfg80211_get_drvinfo,
 	.get_regs_len = cfg80211_get_regs_len,
 	.get_regs = cfg80211_get_regs,
 	.get_link = ethtool_op_get_link,
+	.get_ringparam = cfg80211_get_ringparam,
+	.set_ringparam = cfg80211_set_ringparam,
 };