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authorWey-Yi Guy <wey-yi.w.guy@intel.com>2009-09-17 10:43:45 -0700
committerJohn W. Linville <linville@tuxdriver.com>2009-10-07 16:39:33 -0400
commit01abfbb282482d01e2ac2e6b00e75b248bf517c8 (patch)
tree43a0363adf63eda3d06313ab82a0d27fbee171ad /drivers/net/wireless
parent47eef9bd1079edbc3e6606309c733a2316ca5a72 (diff)
iwlwifi: allow user change protection mechanism for HT
Allow user to change protection mechanism for HT between RTS/CTS and CTS-to-self through sysfs: Show current protection mechanism for HT cat /sys/class/net/wlan0/device/rts_ht_protection Change protection mechanism for HT (only allowed while not-associated) CTS-to-self: echo 0 > /sys/class/net/wlan0/device/rts_ht_protection RTS/CTS: echo 1 > /sys/class/net/wlan0/device/rts_ht_protection Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index a3739628c1d..2a7cc4bdf3f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2798,6 +2798,40 @@ static ssize_t show_statistics(struct device *d,
static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
+static ssize_t show_rts_ht_protection(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+
+ return sprintf(buf, "%s\n",
+ priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
+}
+
+static ssize_t store_rts_ht_protection(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct iwl_priv *priv = dev_get_drvdata(d);
+ unsigned long val;
+ int ret;
+
+ ret = strict_strtoul(buf, 10, &val);
+ if (ret)
+ IWL_INFO(priv, "Input is not in decimal form.\n");
+ else {
+ if (!iwl_is_associated(priv))
+ priv->cfg->use_rts_for_ht = val ? true : false;
+ else
+ IWL_ERR(priv, "Sta associated with AP - "
+ "Change protection mechanism is not allowed\n");
+ ret = count;
+ }
+ return ret;
+}
+
+static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
+ show_rts_ht_protection, store_rts_ht_protection);
+
/*****************************************************************************
*
@@ -2854,6 +2888,7 @@ static struct attribute *iwl_sysfs_entries[] = {
&dev_attr_statistics.attr,
&dev_attr_temperature.attr,
&dev_attr_tx_power.attr,
+ &dev_attr_rts_ht_protection.attr,
#ifdef CONFIG_IWLWIFI_DEBUG
&dev_attr_debug_level.attr,
#endif