iwinfo: expose txpower and frequency offset information

SVN-Revision: 29425

12 files changed, 280 insertions, 107 deletions

diff --git a/package/iwinfo/src/include/iwinfo.h b/package/iwinfo/src/include/iwinfo.h
index 86bf8b1b6d..198d57c9d2 100644
--- a/package/iwinfo/src/include/iwinfo.h
+++ b/package/iwinfo/src/include/iwinfo.h
@@ -120,7 +120,9 @@ extern const struct iwinfo_hardware_entry IWINFO_HARDWARE_ENTRIES[];
 struct iwinfo_ops {
 	int (*channel)(const char *, int *);
 	int (*frequency)(const char *, int *);
+	int (*frequency_offset)(const char *, int *);
 	int (*txpower)(const char *, int *);
+	int (*txpower_offset)(const char *, int *);
 	int (*bitrate)(const char *, int *);
 	int (*signal)(const char *, int *);
 	int (*noise)(const char *, int *);
diff --git a/package/iwinfo/src/include/iwinfo/madwifi.h b/package/iwinfo/src/include/iwinfo/madwifi.h
index ecbe749c8a..9acbc36460 100644
--- a/package/iwinfo/src/include/iwinfo/madwifi.h
+++ b/package/iwinfo/src/include/iwinfo/madwifi.h
@@ -32,7 +32,9 @@ int madwifi_get_bssid(const char *ifname, char *buf);
 int madwifi_get_country(const char *ifname, char *buf);
 int madwifi_get_channel(const char *ifname, int *buf);
 int madwifi_get_frequency(const char *ifname, int *buf);
+int madwifi_get_frequency_offset(const char *ifname, int *buf);
 int madwifi_get_txpower(const char *ifname, int *buf);
+int madwifi_get_txpower_offset(const char *ifname, int *buf);
 int madwifi_get_bitrate(const char *ifname, int *buf);
 int madwifi_get_signal(const char *ifname, int *buf);
 int madwifi_get_noise(const char *ifname, int *buf);
@@ -51,29 +53,31 @@ int madwifi_get_hardware_name(const char *ifname, char *buf);
 void madwifi_close(void);
 
 static const struct iwinfo_ops madwifi_ops = {
-	.channel        = madwifi_get_channel,
-	.frequency      = madwifi_get_frequency,
-	.txpower        = madwifi_get_txpower,
-	.bitrate        = madwifi_get_bitrate,
-	.signal         = madwifi_get_signal,
-	.noise          = madwifi_get_noise,
-	.quality        = madwifi_get_quality,
-	.quality_max    = madwifi_get_quality_max,
-	.mbssid_support = madwifi_get_mbssid_support,
-	.hwmodelist     = madwifi_get_hwmodelist,
-	.mode           = madwifi_get_mode,
-	.ssid           = madwifi_get_ssid,
-	.bssid          = madwifi_get_bssid,
-	.country        = madwifi_get_country,
-	.hardware_id    = madwifi_get_hardware_id,
-	.hardware_name  = madwifi_get_hardware_name,
-	.encryption     = madwifi_get_encryption,
-	.assoclist      = madwifi_get_assoclist,
-	.txpwrlist      = madwifi_get_txpwrlist,
-	.scanlist       = madwifi_get_scanlist,
-	.freqlist       = madwifi_get_freqlist,
-	.countrylist    = madwifi_get_countrylist,
-	.close          = madwifi_close
+	.channel          = madwifi_get_channel,
+	.frequency        = madwifi_get_frequency,
+	.frequency_offset = madwifi_get_frequency_offset,
+	.txpower          = madwifi_get_txpower,
+	.txpower_offset   = madwifi_get_txpower_offset,
+	.bitrate          = madwifi_get_bitrate,
+	.signal           = madwifi_get_signal,
+	.noise            = madwifi_get_noise,
+	.quality          = madwifi_get_quality,
+	.quality_max      = madwifi_get_quality_max,
+	.mbssid_support   = madwifi_get_mbssid_support,
+	.hwmodelist       = madwifi_get_hwmodelist,
+	.mode             = madwifi_get_mode,
+	.ssid             = madwifi_get_ssid,
+	.bssid            = madwifi_get_bssid,
+	.country          = madwifi_get_country,
+	.hardware_id      = madwifi_get_hardware_id,
+	.hardware_name    = madwifi_get_hardware_name,
+	.encryption       = madwifi_get_encryption,
+	.assoclist        = madwifi_get_assoclist,
+	.txpwrlist        = madwifi_get_txpwrlist,
+	.scanlist         = madwifi_get_scanlist,
+	.freqlist         = madwifi_get_freqlist,
+	.countrylist      = madwifi_get_countrylist,
+	.close            = madwifi_close
 };
 
 #endif
diff --git a/package/iwinfo/src/include/iwinfo/nl80211.h b/package/iwinfo/src/include/iwinfo/nl80211.h
index 3df25d34b4..fd0ddb43ab 100644
--- a/package/iwinfo/src/include/iwinfo/nl80211.h
+++ b/package/iwinfo/src/include/iwinfo/nl80211.h
@@ -63,7 +63,9 @@ int nl80211_get_bssid(const char *ifname, char *buf);
 int nl80211_get_country(const char *ifname, char *buf);
 int nl80211_get_channel(const char *ifname, int *buf);
 int nl80211_get_frequency(const char *ifname, int *buf);
+int nl80211_get_frequency_offset(const char *ifname, int *buf);
 int nl80211_get_txpower(const char *ifname, int *buf);
+int nl80211_get_txpower_offset(const char *ifname, int *buf);
 int nl80211_get_bitrate(const char *ifname, int *buf);
 int nl80211_get_signal(const char *ifname, int *buf);
 int nl80211_get_noise(const char *ifname, int *buf);
@@ -82,29 +84,31 @@ int nl80211_get_hardware_name(const char *ifname, char *buf);
 void nl80211_close(void);
 
 static const struct iwinfo_ops nl80211_ops = {
-	.channel        = nl80211_get_channel,
-	.frequency      = nl80211_get_frequency,
-	.txpower        = nl80211_get_txpower,
-	.bitrate        = nl80211_get_bitrate,
-	.signal         = nl80211_get_signal,
-	.noise          = nl80211_get_noise,
-	.quality        = nl80211_get_quality,
-	.quality_max    = nl80211_get_quality_max,
-	.mbssid_support = nl80211_get_mbssid_support,
-	.hwmodelist     = nl80211_get_hwmodelist,
-	.mode           = nl80211_get_mode,
-	.ssid           = nl80211_get_ssid,
-	.bssid          = nl80211_get_bssid,
-	.country        = nl80211_get_country,
-	.hardware_id    = nl80211_get_hardware_id,
-	.hardware_name  = nl80211_get_hardware_name,
-	.encryption     = nl80211_get_encryption,
-	.assoclist      = nl80211_get_assoclist,
-	.txpwrlist      = nl80211_get_txpwrlist,
-	.scanlist       = nl80211_get_scanlist,
-	.freqlist       = nl80211_get_freqlist,
-	.countrylist    = nl80211_get_countrylist,
-	.close          = nl80211_close
+	.channel          = nl80211_get_channel,
+	.frequency        = nl80211_get_frequency,
+	.frequency_offset = nl80211_get_frequency_offset,
+	.txpower          = nl80211_get_txpower,
+	.txpower_offset   = nl80211_get_txpower_offset,
+	.bitrate          = nl80211_get_bitrate,
+	.signal           = nl80211_get_signal,
+	.noise            = nl80211_get_noise,
+	.quality          = nl80211_get_quality,
+	.quality_max      = nl80211_get_quality_max,
+	.mbssid_support   = nl80211_get_mbssid_support,
+	.hwmodelist       = nl80211_get_hwmodelist,
+	.mode             = nl80211_get_mode,
+	.ssid             = nl80211_get_ssid,
+	.bssid            = nl80211_get_bssid,
+	.country          = nl80211_get_country,
+	.hardware_id      = nl80211_get_hardware_id,
+	.hardware_name    = nl80211_get_hardware_name,
+	.encryption       = nl80211_get_encryption,
+	.assoclist        = nl80211_get_assoclist,
+	.txpwrlist        = nl80211_get_txpwrlist,
+	.scanlist         = nl80211_get_scanlist,
+	.freqlist         = nl80211_get_freqlist,
+	.countrylist      = nl80211_get_countrylist,
+	.close            = nl80211_close
 };
 
 #endif
diff --git a/package/iwinfo/src/include/iwinfo/wext.h b/package/iwinfo/src/include/iwinfo/wext.h
index 4d2f4aa0a2..8412ef39b3 100644
--- a/package/iwinfo/src/include/iwinfo/wext.h
+++ b/package/iwinfo/src/include/iwinfo/wext.h
@@ -33,7 +33,9 @@ int wext_get_bssid(const char *ifname, char *buf);
 int wext_get_country(const char *ifname, char *buf);
 int wext_get_channel(const char *ifname, int *buf);
 int wext_get_frequency(const char *ifname, int *buf);
+int wext_get_frequency_offset(const char *ifname, int *buf);
 int wext_get_txpower(const char *ifname, int *buf);
+int wext_get_txpower_offset(const char *ifname, int *buf);
 int wext_get_bitrate(const char *ifname, int *buf);
 int wext_get_signal(const char *ifname, int *buf);
 int wext_get_noise(const char *ifname, int *buf);
@@ -52,29 +54,31 @@ int wext_get_hardware_name(const char *ifname, char *buf);
 void wext_close(void);
 
 static const struct iwinfo_ops wext_ops = {
-	.channel        = wext_get_channel,
-	.frequency      = wext_get_frequency,
-	.txpower        = wext_get_txpower,
-	.bitrate        = wext_get_bitrate,
-	.signal         = wext_get_signal,
-	.noise          = wext_get_noise,
-	.quality        = wext_get_quality,
-	.quality_max    = wext_get_quality_max,
-	.mbssid_support = wext_get_mbssid_support,
-	.hwmodelist     = wext_get_hwmodelist,
-	.mode           = wext_get_mode,
-	.ssid           = wext_get_ssid,
-	.bssid          = wext_get_bssid,
-	.country        = wext_get_country,
-	.hardware_id    = wext_get_hardware_id,
-	.hardware_name  = wext_get_hardware_name,
-	.encryption     = wext_get_encryption,
-	.assoclist      = wext_get_assoclist,
-	.txpwrlist      = wext_get_txpwrlist,
-	.scanlist       = wext_get_scanlist,
-	.freqlist       = wext_get_freqlist,
-	.countrylist    = wext_get_countrylist,
-	.close          = wext_close
+	.channel          = wext_get_channel,
+	.frequency        = wext_get_frequency,
+	.frequency_offset = wext_get_frequency_offset,
+	.txpower          = wext_get_txpower,
+	.txpower_offset   = wext_get_txpower_offset,
+	.bitrate          = wext_get_bitrate,
+	.signal           = wext_get_signal,
+	.noise            = wext_get_noise,
+	.quality          = wext_get_quality,
+	.quality_max      = wext_get_quality_max,
+	.mbssid_support   = wext_get_mbssid_support,
+	.hwmodelist       = wext_get_hwmodelist,
+	.mode             = wext_get_mode,
+	.ssid             = wext_get_ssid,
+	.bssid            = wext_get_bssid,
+	.country          = wext_get_country,
+	.hardware_id      = wext_get_hardware_id,
+	.hardware_name    = wext_get_hardware_name,
+	.encryption       = wext_get_encryption,
+	.assoclist        = wext_get_assoclist,
+	.txpwrlist        = wext_get_txpwrlist,
+	.scanlist         = wext_get_scanlist,
+	.freqlist         = wext_get_freqlist,
+	.countrylist      = wext_get_countrylist,
+	.close            = wext_close
 };
 
 #endif
diff --git a/package/iwinfo/src/include/iwinfo/wl.h b/package/iwinfo/src/include/iwinfo/wl.h
index 10be96aeb9..47dda47102 100644
--- a/package/iwinfo/src/include/iwinfo/wl.h
+++ b/package/iwinfo/src/include/iwinfo/wl.h
@@ -32,7 +32,9 @@ int wl_get_bssid(const char *ifname, char *buf);
 int wl_get_country(const char *ifname, char *buf);
 int wl_get_channel(const char *ifname, int *buf);
 int wl_get_frequency(const char *ifname, int *buf);
+int wl_get_frequency_offset(const char *ifname, int *buf);
 int wl_get_txpower(const char *ifname, int *buf);
+int wl_get_txpower_offset(const char *ifname, int *buf);
 int wl_get_bitrate(const char *ifname, int *buf);
 int wl_get_signal(const char *ifname, int *buf);
 int wl_get_noise(const char *ifname, int *buf);
@@ -52,29 +54,31 @@ int wl_get_hardware_name(const char *ifname, char *buf);
 void wl_close(void);
 
 static const struct iwinfo_ops wl_ops = {
-	.channel        = wl_get_channel,
-	.frequency      = wl_get_frequency,
-	.txpower        = wl_get_txpower,
-	.bitrate        = wl_get_bitrate,
-	.signal         = wl_get_signal,
-	.noise          = wl_get_noise,
-	.quality        = wl_get_quality,
-	.quality_max    = wl_get_quality_max,
-	.mbssid_support = wl_get_mbssid_support,
-	.hwmodelist     = wl_get_hwmodelist,
-	.mode           = wl_get_mode,
-	.ssid           = wl_get_ssid,
-	.bssid          = wl_get_bssid,
-	.country        = wl_get_country,
-	.hardware_id    = wl_get_hardware_id,
-	.hardware_name  = wl_get_hardware_name,
-	.encryption     = wl_get_encryption,
-	.assoclist      = wl_get_assoclist,
-	.txpwrlist      = wl_get_txpwrlist,
-	.scanlist       = wl_get_scanlist,
-	.freqlist       = wl_get_freqlist,
-	.countrylist    = wl_get_countrylist,
-	.close          = wl_close
+	.channel          = wl_get_channel,
+	.frequency        = wl_get_frequency,
+	.frequency_offset = wl_get_frequency_offset,
+	.txpower          = wl_get_txpower,
+	.txpower_offset   = wl_get_txpower_offset,
+	.bitrate          = wl_get_bitrate,
+	.signal           = wl_get_signal,
+	.noise            = wl_get_noise,
+	.quality          = wl_get_quality,
+	.quality_max      = wl_get_quality_max,
+	.mbssid_support   = wl_get_mbssid_support,
+	.hwmodelist       = wl_get_hwmodelist,
+	.mode             = wl_get_mode,
+	.ssid             = wl_get_ssid,
+	.bssid            = wl_get_bssid,
+	.country          = wl_get_country,
+	.hardware_id      = wl_get_hardware_id,
+	.hardware_name    = wl_get_hardware_name,
+	.encryption       = wl_get_encryption,
+	.assoclist        = wl_get_assoclist,
+	.txpwrlist        = wl_get_txpwrlist,
+	.scanlist         = wl_get_scanlist,
+	.freqlist         = wl_get_freqlist,
+	.countrylist      = wl_get_countrylist,
+	.close            = wl_close
 };
 
 #endif
diff --git a/package/iwinfo/src/iwinfo_cli.c b/package/iwinfo/src/iwinfo_cli.c
index bfa1d88ef9..d5be084bdb 100644
--- a/package/iwinfo/src/iwinfo_cli.c
+++ b/package/iwinfo/src/iwinfo_cli.c
@@ -311,6 +311,36 @@ static char * print_hardware_name(const struct iwinfo_ops *iw, const char *ifnam
 	return buf;
 }
 
+static char * print_txpower_offset(const struct iwinfo_ops *iw, const char *ifname)
+{
+	int off;
+	static char buf[12];
+
+	if (iw->txpower_offset(ifname, &off))
+		snprintf(buf, sizeof(buf), "unknown");
+	else if (off != 0)
+		snprintf(buf, sizeof(buf), "%d dB", off);
+	else
+		snprintf(buf, sizeof(buf), "none");
+
+	return buf;
+}
+
+static char * print_frequency_offset(const struct iwinfo_ops *iw, const char *ifname)
+{
+	int off;
+	static char buf[12];
+
+	if (iw->frequency_offset(ifname, &off))
+		snprintf(buf, sizeof(buf), "unknown");
+	else if (off != 0)
+		snprintf(buf, sizeof(buf), "%.3f GHz", ((float)off / 1000.0));
+	else
+		snprintf(buf, sizeof(buf), "none");
+
+	return buf;
+}
+
 static char * print_ssid(const struct iwinfo_ops *iw, const char *ifname)
 {
 	char buf[IWINFO_ESSID_MAX_SIZE+1] = { 0 };
@@ -473,6 +503,10 @@ static void print_info(const struct iwinfo_ops *iw, const char *ifname)
 	printf("          Hardware: %s [%s]\n",
 		print_hardware_id(iw, ifname),
 		print_hardware_name(iw, ifname));
+	printf("          TX power offset: %s\n",
+		print_txpower_offset(iw, ifname));
+	printf("          Frequency offset: %s\n",
+		print_frequency_offset(iw, ifname));
 	printf("          Supports VAPs: %s\n",
 		print_mbssid_supp(iw, ifname));
 }
diff --git a/package/iwinfo/src/iwinfo_lib.c b/package/iwinfo/src/iwinfo_lib.c
index e088d03f05..e33c795078 100644
--- a/package/iwinfo/src/iwinfo_lib.c
+++ b/package/iwinfo/src/iwinfo_lib.c
@@ -347,7 +347,7 @@ const struct iwinfo_hardware_entry IWINFO_HARDWARE_ENTRIES[] = {
 	{ VENDOR_UBNT, "SR71A",                 0x168c, 0x0027, 0x168c, 0x2082, 10,     0 },
 	{ VENDOR_UBNT, "SR71",                  0x168c, 0x0027, 0x0777, 0x4082, 10,     0 },
 #endif
-#ifdef NL80211
+#ifdef USE_NL80211
 	{ VENDOR_UBNT, "NanoStation M2",        0x168c, 0x002a, 0x0777, 0xe012, 10,     0 }, /* ToDo: confirm offset */
 	{ VENDOR_UBNT, "NanoStation M5",        0x168c, 0x002a, 0x0777, 0xe005,  5,     0 }, /* ToDo: confirm offset */
 	{ VENDOR_UBNT, "Bullet M2",             0x168c, 0x002a, 0x0777, 0xe202, 12,     0 },
diff --git a/package/iwinfo/src/iwinfo_lua.c b/package/iwinfo/src/iwinfo_lua.c
index 08eec18bd9..533236b4d2 100644
--- a/package/iwinfo/src/iwinfo_lua.c
+++ b/package/iwinfo/src/iwinfo_lua.c
@@ -558,7 +558,9 @@ static int iwinfo_L_countrylist(lua_State *L, int (*func)(const char *, char *,
 /* Broadcom */
 LUA_WRAP_INT(wl,channel)
 LUA_WRAP_INT(wl,frequency)
+LUA_WRAP_INT(wl,frequency_offset)
 LUA_WRAP_INT(wl,txpower)
+LUA_WRAP_INT(wl,txpower_offset)
 LUA_WRAP_INT(wl,bitrate)
 LUA_WRAP_INT(wl,signal)
 LUA_WRAP_INT(wl,noise)
@@ -584,7 +586,9 @@ LUA_WRAP_STRUCT(wl,hardware_id)
 /* Madwifi */
 LUA_WRAP_INT(madwifi,channel)
 LUA_WRAP_INT(madwifi,frequency)
+LUA_WRAP_INT(madwifi,frequency_offset)
 LUA_WRAP_INT(madwifi,txpower)
+LUA_WRAP_INT(madwifi,txpower_offset)
 LUA_WRAP_INT(madwifi,bitrate)
 LUA_WRAP_INT(madwifi,signal)
 LUA_WRAP_INT(madwifi,noise)
@@ -610,7 +614,9 @@ LUA_WRAP_STRUCT(madwifi,hardware_id)
 /* NL80211 */
 LUA_WRAP_INT(nl80211,channel)
 LUA_WRAP_INT(nl80211,frequency)
+LUA_WRAP_INT(nl80211,frequency_offset)
 LUA_WRAP_INT(nl80211,txpower)
+LUA_WRAP_INT(nl80211,txpower_offset)
 LUA_WRAP_INT(nl80211,bitrate)
 LUA_WRAP_INT(nl80211,signal)
 LUA_WRAP_INT(nl80211,noise)
@@ -635,7 +641,9 @@ LUA_WRAP_STRUCT(nl80211,hardware_id)
 /* Wext */
 LUA_WRAP_INT(wext,channel)
 LUA_WRAP_INT(wext,frequency)
+LUA_WRAP_INT(wext,frequency_offset)
 LUA_WRAP_INT(wext,txpower)
+LUA_WRAP_INT(wext,txpower_offset)
 LUA_WRAP_INT(wext,bitrate)
 LUA_WRAP_INT(wext,signal)
 LUA_WRAP_INT(wext,noise)
@@ -661,7 +669,9 @@ LUA_WRAP_STRUCT(wext,hardware_id)
 static const luaL_reg R_wl[] = {
 	LUA_REG(wl,channel),
 	LUA_REG(wl,frequency),
+	LUA_REG(wl,frequency_offset),
 	LUA_REG(wl,txpower),
+	LUA_REG(wl,txpower_offset),
 	LUA_REG(wl,bitrate),
 	LUA_REG(wl,signal),
 	LUA_REG(wl,noise),
@@ -690,7 +700,9 @@ static const luaL_reg R_wl[] = {
 static const luaL_reg R_madwifi[] = {
 	LUA_REG(madwifi,channel),
 	LUA_REG(madwifi,frequency),
+	LUA_REG(madwifi,frequency_offset),
 	LUA_REG(madwifi,txpower),
+	LUA_REG(madwifi,txpower_offset),
 	LUA_REG(madwifi,bitrate),
 	LUA_REG(madwifi,signal),
 	LUA_REG(madwifi,noise),
@@ -719,7 +731,9 @@ static const luaL_reg R_madwifi[] = {
 static const luaL_reg R_nl80211[] = {
 	LUA_REG(nl80211,channel),
 	LUA_REG(nl80211,frequency),
+	LUA_REG(nl80211,frequency_offset),
 	LUA_REG(nl80211,txpower),
+	LUA_REG(nl80211,txpower_offset),
 	LUA_REG(nl80211,bitrate),
 	LUA_REG(nl80211,signal),
 	LUA_REG(nl80211,noise),
@@ -747,7 +761,9 @@ static const luaL_reg R_nl80211[] = {
 static const luaL_reg R_wext[] = {
 	LUA_REG(wext,channel),
 	LUA_REG(wext,frequency),
+	LUA_REG(wext,frequency_offset),
 	LUA_REG(wext,txpower),
+	LUA_REG(wext,txpower_offset),
 	LUA_REG(wext,bitrate),
 	LUA_REG(wext,signal),
 	LUA_REG(wext,noise),
diff --git a/package/iwinfo/src/iwinfo_madwifi.c b/package/iwinfo/src/iwinfo_madwifi.c
index 50793c4937..732cfe56fe 100644
--- a/package/iwinfo/src/iwinfo_madwifi.c
+++ b/package/iwinfo/src/iwinfo_madwifi.c
@@ -1060,20 +1060,59 @@ int madwifi_get_hardware_id(const char *ifname, char *buf)
 	return 0;
 }
 
-int madwifi_get_hardware_name(const char *ifname, char *buf)
+static const struct iwinfo_hardware_entry *
+madwifi_get_hardware_entry(const char *ifname)
 {
 	struct iwinfo_hardware_id id;
-	struct iwinfo_hardware_entry *hw;
 
 	if (madwifi_get_hardware_id(ifname, (char *)&id))
-		return -1;
+		return NULL;
 
-	hw = iwinfo_hardware(&id);
+	return iwinfo_hardware(&id);
+}
 
-	if (hw)
-		sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
+int madwifi_get_hardware_name(const char *ifname, char *buf)
+{
+	char vendor[64];
+	char device[64];
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = madwifi_get_hardware_entry(ifname)))
+	{
+		madwifi_proc_file(ifname, "dev_vendor", vendor, sizeof(vendor));
+		madwifi_proc_file(ifname, "dev_name",   device, sizeof(device));
+
+		if (vendor[0] && device[0])
+			sprintf(buf, "%s %s", vendor, device);
+		else
+			sprintf(buf, "Generic Atheros");
+	}
 	else
-		sprintf(buf, "Generic Atheros");
+	{
+		sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
+	}
+
+	return 0;
+}
+
+int madwifi_get_txpower_offset(const char *ifname, int *buf)
+{
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = madwifi_get_hardware_entry(ifname)))
+		return -1;
+
+	*buf = hw->txpower_offset;
+	return 0;
+}
+
+int madwifi_get_frequency_offset(const char *ifname, int *buf)
+{
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = madwifi_get_hardware_entry(ifname)))
+		return -1;
 
+	*buf = hw->frequency_offset;
 	return 0;
 }
diff --git a/package/iwinfo/src/iwinfo_nl80211.c b/package/iwinfo/src/iwinfo_nl80211.c
index d3726821fc..4b8b37daa8 100644
--- a/package/iwinfo/src/iwinfo_nl80211.c
+++ b/package/iwinfo/src/iwinfo_nl80211.c
@@ -1634,20 +1634,47 @@ int nl80211_get_hardware_id(const char *ifname, char *buf)
 	return wext_get_hardware_id(ifname, buf);
 }
 
-int nl80211_get_hardware_name(const char *ifname, char *buf)
+static const struct iwinfo_hardware_entry *
+nl80211_get_hardware_entry(const char *ifname)
 {
 	struct iwinfo_hardware_id id;
-	struct iwinfo_hardware_entry *hw;
 
 	if (nl80211_get_hardware_id(ifname, (char *)&id))
-		return -1;
+		return NULL;
 
-	hw = iwinfo_hardware(&id);
+	return iwinfo_hardware(&id);
+}
 
-	if (hw)
-		sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
-	else
+int nl80211_get_hardware_name(const char *ifname, char *buf)
+{
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = nl80211_get_hardware_entry(ifname)))
 		sprintf(buf, "Generic MAC80211");
+	else
+		sprintf(buf, "%s %s", hw->vendor_name, hw->device_name);
+
+	return 0;
+}
+
+int nl80211_get_txpower_offset(const char *ifname, int *buf)
+{
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = nl80211_get_hardware_entry(ifname)))
+		return -1;
+
+	*buf = hw->txpower_offset;
+	return 0;
+}
+
+int nl80211_get_frequency_offset(const char *ifname, int *buf)
+{
+	const struct iwinfo_hardware_entry *hw;
+
+	if (!(hw = nl80211_get_hardware_entry(ifname)))
+		return -1;
 
+	*buf = hw->frequency_offset;
 	return 0;
 }
diff --git a/package/iwinfo/src/iwinfo_wext.c b/package/iwinfo/src/iwinfo_wext.c
index 3923c9e760..c74785f874 100644
--- a/package/iwinfo/src/iwinfo_wext.c
+++ b/package/iwinfo/src/iwinfo_wext.c
@@ -515,3 +515,17 @@ int wext_get_hardware_name(const char *ifname, char *buf)
 	sprintf(buf, "Generic WEXT");
 	return 0;
 }
+
+int wext_get_txpower_offset(const char *ifname, int *buf)
+{
+	/* Stub */
+	*buf = 0;
+	return -1;
+}
+
+int wext_get_frequency_offset(const char *ifname, int *buf)
+{
+	/* Stub */
+	*buf = 0;
+	return -1;
+}
diff --git a/package/iwinfo/src/iwinfo_wl.c b/package/iwinfo/src/iwinfo_wl.c
index 76984de336..7b39a9b863 100644
--- a/package/iwinfo/src/iwinfo_wl.c
+++ b/package/iwinfo/src/iwinfo_wl.c
@@ -585,3 +585,28 @@ int wl_get_hardware_name(const char *ifname, char *buf)
 
 	return 0;
 }
+
+int wl_get_txpower_offset(const char *ifname, int *buf)
+{
+	FILE *p;
+	char off[8];
+
+	*buf = 0;
+
+	if ((p = popen("/usr/sbin/nvram get opo", "r")) != NULL)
+	{
+		if (fread(off, 1, sizeof(off), p))
+			*buf = strtoul(off, NULL, 16);
+
+		pclose(p);
+	}
+
+	return 0;
+}
+
+int wl_get_frequency_offset(const char *ifname, int *buf)
+{
+	/* Stub */
+	*buf = 0;
+	return -1;
+}