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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-13 14:50:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-13 14:50:18 -0800
commitd89b218b801fd93ea95880f1c7fde348cbcc51c5 (patch)
treecd3c34e1811f9b2bc10ecfb957bf26cbd04c677e /net/core/ethtool.c
parent80a186074e72e2cd61f6716d90cf32ce54981a56 (diff)
parentbec68ff1637ca00bb1585a03a7be8a13380084de (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (108 commits) bridge: ensure to unlock in error path in br_multicast_query(). drivers/net/tulip/eeprom.c: fix bogus "(null)" in tulip init messages sky2: Avoid rtnl_unlock without rtnl_lock ipv6: Send netlink notification when DAD fails drivers/net/tg3.c: change the field used with the TG3_FLAG_10_100_ONLY constant ipconfig: Handle devices which take some time to come up. mac80211: Fix memory leak in ieee80211_if_write() mac80211: Fix (dynamic) power save entry ipw2200: use kmalloc for large local variables ath5k: read eeprom IQ calibration values correctly for G mode ath5k: fix I/Q calibration (for real) ath5k: fix TSF reset ath5k: use fixed antenna for tx descriptors libipw: split ieee->networks into small pieces mac80211: Fix sta_mtx unlocking on insert STA failure path rt2x00: remove KSEG1ADDR define from rt2x00soc.h net: add ColdFire support to the smc91x driver asix: fix setting mac address for AX88772 ipv6 ip6_tunnel: eliminate unused recursion field from ip6_tnl{}. net: Fix dev_mc_add() ...
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c103
1 files changed, 75 insertions, 28 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 0f2f82185ec4..f4cb6b6299d9 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
+#include <linux/bitops.h>
#include <asm/uaccess.h>
/*
@@ -199,10 +200,7 @@ static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
return dev->ethtool_ops->set_settings(dev, &cmd);
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
{
struct ethtool_drvinfo info;
const struct ethtool_ops *ops = dev->ethtool_ops;
@@ -214,6 +212,10 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use
info.cmd = ETHTOOL_GDRVINFO;
ops->get_drvinfo(dev, &info);
+ /*
+ * this method of obtaining string set info is deprecated;
+ * Use ETHTOOL_GSSET_INFO instead.
+ */
if (ops->get_sset_count) {
int rc;
@@ -237,10 +239,67 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use
return 0;
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_set_rxnfc(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
+ void __user *useraddr)
+{
+ struct ethtool_sset_info info;
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ u64 sset_mask;
+ int i, idx = 0, n_bits = 0, ret, rc;
+ u32 *info_buf = NULL;
+
+ if (!ops->get_sset_count)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&info, useraddr, sizeof(info)))
+ return -EFAULT;
+
+ /* store copy of mask, because we zero struct later on */
+ sset_mask = info.sset_mask;
+ if (!sset_mask)
+ return 0;
+
+ /* calculate size of return buffer */
+ n_bits = hweight64(sset_mask);
+
+ memset(&info, 0, sizeof(info));
+ info.cmd = ETHTOOL_GSSET_INFO;
+
+ info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
+ if (!info_buf)
+ return -ENOMEM;
+
+ /*
+ * fill return buffer based on input bitmask and successful
+ * get_sset_count return
+ */
+ for (i = 0; i < 64; i++) {
+ if (!(sset_mask & (1ULL << i)))
+ continue;
+
+ rc = ops->get_sset_count(dev, i);
+ if (rc >= 0) {
+ info.sset_mask |= (1ULL << i);
+ info_buf[idx++] = rc;
+ }
+ }
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &info, sizeof(info)))
+ goto out;
+
+ useraddr += offsetof(struct ethtool_sset_info, data);
+ if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
+ goto out;
+
+ ret = 0;
+
+out:
+ kfree(info_buf);
+ return ret;
+}
+
+static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rxnfc cmd;
@@ -253,10 +312,7 @@ static noinline int ethtool_set_rxnfc(struct net_device *dev, void __user *usera
return dev->ethtool_ops->set_rxnfc(dev, &cmd);
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_get_rxnfc(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rxnfc info;
const struct ethtool_ops *ops = dev->ethtool_ops;
@@ -328,10 +384,7 @@ static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
list->count++;
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_set_rx_ntuple(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rx_ntuple cmd;
const struct ethtool_ops *ops = dev->ethtool_ops;
@@ -799,10 +852,7 @@ static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
return ret;
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
{
struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
@@ -816,10 +866,7 @@ static noinline int ethtool_get_coalesce(struct net_device *dev, void __user *us
return 0;
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
+static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
{
struct ethtool_coalesce coalesce;
@@ -1229,10 +1276,7 @@ static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
return actor(dev, edata.data);
}
-/*
- * noinline attribute so that gcc doesnt use too much stack in dev_ethtool()
- */
-static noinline int ethtool_flash_device(struct net_device *dev, char __user *useraddr)
+static noinline_for_stack int ethtool_flash_device(struct net_device *dev, char __user *useraddr)
{
struct ethtool_flash efl;
@@ -1471,6 +1515,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
case ETHTOOL_GRXNTUPLE:
rc = ethtool_get_rx_ntuple(dev, useraddr);
break;
+ case ETHTOOL_GSSET_INFO:
+ rc = ethtool_get_sset_info(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}