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authorOlivier Hochreutiner <olivier.hochreutiner@epfl.ch>2006-03-08 03:13:55 +0800
committerJohn W. Linville <linville@tuxdriver.com>2006-03-17 15:08:04 -0500
commit651be26f2daf31e61faf4b55ada709cf39ec76a2 (patch)
treecac9bac812d1ecc1f85bce54a2591cab34752627
parent71de1f3dd14e3e39cef929506a9526779f5a447d (diff)
[PATCH] ipw2200: wireless extension sensitivity threshold support
The patch allows the user to set the handover threshold, i.e. the number of consecutively missed beacons that will trigger a roaming attempt. The disassociation threshold is set to 3 times the handover threshold. Signed-off-by: Olivier Hochreutiner <olivier.hochreutiner@epfl.ch> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--Documentation/networking/README.ipw220010
-rw-r--r--drivers/net/wireless/ipw2200.c48
-rw-r--r--drivers/net/wireless/ipw2200.h4
3 files changed, 61 insertions, 1 deletions
diff --git a/Documentation/networking/README.ipw2200 b/Documentation/networking/README.ipw2200
index 712c5681338..c2f693e24c7 100644
--- a/Documentation/networking/README.ipw2200
+++ b/Documentation/networking/README.ipw2200
@@ -30,6 +30,7 @@ Index
2. Ad-Hoc Networking
3. Interacting with Wireless Tools
3.1. iwconfig mode
+3.2. iwconfig sens
4. About the Version Numbers
5. Firmware installation
6. Support
@@ -383,6 +384,15 @@ When configuring the mode of the adapter, all run-time configured parameters
are reset to the value used when the module was loaded. This includes
channels, rates, ESSID, etc.
+3.2 iwconfig sens
+-----------------------------------------------
+
+The 'iwconfig ethX sens XX' command will not set the signal sensitivity
+threshold, as described in iwconfig documentation, but rather the number
+of consecutive missed beacons that will trigger handover, i.e. roaming
+to another access point. At the same time, it will set the disassociation
+threshold to 3 times the given value.
+
4. About the Version Numbers
-----------------------------------------------
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 954a095eeb5..078f33b01c2 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -8608,6 +8608,52 @@ static int ipw_wx_get_nick(struct net_device *dev,
return 0;
}
+static int ipw_wx_set_sens(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct ipw_priv *priv = ieee80211_priv(dev);
+ int err = 0;
+
+ IPW_DEBUG_WX("Setting roaming threshold to %d\n", wrqu->sens.value);
+ IPW_DEBUG_WX("Setting disassociate threshold to %d\n", 3*wrqu->sens.value);
+ mutex_lock(&priv->mutex);
+
+ if (wrqu->sens.fixed == 0)
+ {
+ priv->roaming_threshold = IPW_MB_ROAMING_THRESHOLD_DEFAULT;
+ priv->disassociate_threshold = IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT;
+ goto out;
+ }
+ if ((wrqu->sens.value > IPW_MB_ROAMING_THRESHOLD_MAX) ||
+ (wrqu->sens.value < IPW_MB_ROAMING_THRESHOLD_MIN)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ priv->roaming_threshold = wrqu->sens.value;
+ priv->disassociate_threshold = 3*wrqu->sens.value;
+ out:
+ mutex_unlock(&priv->mutex);
+ return err;
+}
+
+static int ipw_wx_get_sens(struct net_device *dev,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct ipw_priv *priv = ieee80211_priv(dev);
+ mutex_lock(&priv->mutex);
+ wrqu->sens.fixed = 1;
+ wrqu->sens.value = priv->roaming_threshold;
+ mutex_unlock(&priv->mutex);
+
+ IPW_DEBUG_WX("GET roaming threshold -> %s %d \n",
+ wrqu->power.disabled ? "OFF" : "ON", wrqu->power.value);
+
+ return 0;
+}
+
static int ipw_wx_set_rate(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
@@ -9429,6 +9475,8 @@ static iw_handler ipw_wx_handlers[] = {
IW_IOCTL(SIOCGIWFREQ) = ipw_wx_get_freq,
IW_IOCTL(SIOCSIWMODE) = ipw_wx_set_mode,
IW_IOCTL(SIOCGIWMODE) = ipw_wx_get_mode,
+ IW_IOCTL(SIOCSIWSENS) = ipw_wx_set_sens,
+ IW_IOCTL(SIOCGIWSENS) = ipw_wx_get_sens,
IW_IOCTL(SIOCGIWRANGE) = ipw_wx_get_range,
IW_IOCTL(SIOCSIWAP) = ipw_wx_set_wap,
IW_IOCTL(SIOCGIWAP) = ipw_wx_get_wap,
diff --git a/drivers/net/wireless/ipw2200.h b/drivers/net/wireless/ipw2200.h
index e8f133666c6..2033fc6f189 100644
--- a/drivers/net/wireless/ipw2200.h
+++ b/drivers/net/wireless/ipw2200.h
@@ -246,8 +246,10 @@ enum connection_manager_assoc_states {
#define HOST_NOTIFICATION_S36_MEASUREMENT_REFUSED 31
#define HOST_NOTIFICATION_STATUS_BEACON_MISSING 1
-#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT 24
+#define IPW_MB_ROAMING_THRESHOLD_MIN 1
#define IPW_MB_ROAMING_THRESHOLD_DEFAULT 8
+#define IPW_MB_ROAMING_THRESHOLD_MAX 30
+#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT 3*IPW_MB_ROAMING_THRESHOLD_DEFAULT
#define IPW_REAL_RATE_RX_PACKET_THRESHOLD 300
#define MACADRR_BYTE_LEN 6