From 1b77a6f4c49b29b83e3063d9deca1a38e97ad897 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Sun, 15 Nov 2009 15:21:03 +0000
Subject: [PATCH] libs/iwinfo: add *_get_freqlist()

---
 libs/iwinfo/src/iwinfo.h         |  5 ++++
 libs/iwinfo/src/iwinfo_lualib.c  | 39 ++++++++++++++++++++++++++++++++
 libs/iwinfo/src/iwinfo_madwifi.c | 26 +++++++++++++++++++++
 libs/iwinfo/src/iwinfo_madwifi.h |  1 +
 libs/iwinfo/src/iwinfo_wext.c    | 31 +++++++++++++++++++++++++
 libs/iwinfo/src/iwinfo_wext.h    |  1 +
 libs/iwinfo/src/iwinfo_wl.c      |  5 ++++
 libs/iwinfo/src/iwinfo_wl.h      |  1 +
 8 files changed, 109 insertions(+)

diff --git a/libs/iwinfo/src/iwinfo.h b/libs/iwinfo/src/iwinfo.h
index eebe6b419..f15e38327 100644
--- a/libs/iwinfo/src/iwinfo.h
+++ b/libs/iwinfo/src/iwinfo.h
@@ -36,6 +36,11 @@ struct iwinfo_txpwrlist_entry {
 	uint8_t	mw;
 };
 
+struct iwinfo_freqlist_entry {
+	uint8_t channel;
+	uint32_t mhz;
+};
+
 struct iwinfo_crypto_entry {
 	uint8_t	enabled;
 	uint8_t wpa_version;
diff --git a/libs/iwinfo/src/iwinfo_lualib.c b/libs/iwinfo/src/iwinfo_lualib.c
index 8eb4ad5dc..61ad5d325 100644
--- a/libs/iwinfo/src/iwinfo_lualib.c
+++ b/libs/iwinfo/src/iwinfo_lualib.c
@@ -210,6 +210,39 @@ static int iwinfo_L_scanlist(lua_State *L, int (*func)(const char *, char *, int
 	return 1;
 }
 
+/* Wrapper for frequency list */
+static int iwinfo_L_freqlist(lua_State *L, int (*func)(const char *, char *, int *))
+{
+	int i, x, len;
+	char rv[IWINFO_BUFSIZE];
+	const char *ifname = luaL_checkstring(L, 1);
+	struct iwinfo_freqlist_entry *e;
+
+	lua_newtable(L);
+	memset(rv, 0, sizeof(rv));
+
+	if( !(*func)(ifname, rv, &len) )
+	{
+		for( i = 0, x = 1; i < len; i += sizeof(struct iwinfo_freqlist_entry), x++ )
+		{
+			e = (struct iwinfo_freqlist_entry *) &rv[i];
+
+			lua_newtable(L);
+
+			/* MHz */
+			lua_pushinteger(L, e->mhz);
+			lua_setfield(L, -2, "mhz");
+
+			/* Channel */
+			lua_pushinteger(L, e->channel);
+			lua_setfield(L, -2, "channel");
+
+			lua_rawseti(L, -2, x);
+		}
+	}
+
+	return 1;
+}
 
 /* Broadcom */
 LUA_WRAP_INT(wl,channel)
@@ -227,6 +260,7 @@ LUA_WRAP_STRING(wl,enctype)
 LUA_WRAP_LIST(wl,assoclist)
 LUA_WRAP_LIST(wl,txpwrlist)
 LUA_WRAP_LIST(wl,scanlist)
+LUA_WRAP_LIST(wl,freqlist)
 
 /* Madwifi */
 LUA_WRAP_INT(madwifi,channel)
@@ -244,6 +278,7 @@ LUA_WRAP_STRING(madwifi,enctype)
 LUA_WRAP_LIST(madwifi,assoclist)
 LUA_WRAP_LIST(madwifi,txpwrlist)
 LUA_WRAP_LIST(madwifi,scanlist)
+LUA_WRAP_LIST(madwifi,freqlist)
 
 /* Wext */
 LUA_WRAP_INT(wext,channel)
@@ -261,6 +296,7 @@ LUA_WRAP_STRING(wext,enctype)
 LUA_WRAP_LIST(wext,assoclist)
 LUA_WRAP_LIST(wext,txpwrlist)
 LUA_WRAP_LIST(wext,scanlist)
+LUA_WRAP_LIST(wext,freqlist)
 
 /* Broadcom table */
 static const luaL_reg R_wl[] = {
@@ -278,6 +314,7 @@ static const luaL_reg R_wl[] = {
 	LUA_REG(wl,assoclist),
 	LUA_REG(wl,txpwrlist),
 	LUA_REG(wl,scanlist),
+	LUA_REG(wl,freqlist),
 	LUA_REG(wl,mbssid_support),
 	{ NULL, NULL }
 };
@@ -298,6 +335,7 @@ static const luaL_reg R_madwifi[] = {
 	LUA_REG(madwifi,assoclist),
 	LUA_REG(madwifi,txpwrlist),
 	LUA_REG(madwifi,scanlist),
+	LUA_REG(madwifi,freqlist),
 	LUA_REG(madwifi,mbssid_support),
 	{ NULL, NULL }
 };
@@ -318,6 +356,7 @@ static const luaL_reg R_wext[] = {
 	LUA_REG(wext,assoclist),
 	LUA_REG(wext,txpwrlist),
 	LUA_REG(wext,scanlist),
+	LUA_REG(wext,freqlist),
 	LUA_REG(wext,mbssid_support),
 	{ NULL, NULL }
 };
diff --git a/libs/iwinfo/src/iwinfo_madwifi.c b/libs/iwinfo/src/iwinfo_madwifi.c
index 1fe777f1d..99c02dcd0 100644
--- a/libs/iwinfo/src/iwinfo_madwifi.c
+++ b/libs/iwinfo/src/iwinfo_madwifi.c
@@ -494,6 +494,32 @@ int madwifi_get_scanlist(const char *ifname, char *buf, int *len)
 	return ret;
 }
 
+int madwifi_get_freqlist(const char *ifname, char *buf, int *len)
+{
+	int i, bl;
+	struct ieee80211req_chaninfo chans;
+	struct iwinfo_freqlist_entry entry;
+
+	if( get80211priv(ifname, IEEE80211_IOCTL_GETCHANINFO, &chans, sizeof(chans)) >= 0 )
+	{
+		bl = 0;
+
+		for( i = 0; i < chans.ic_nchans; i++ )
+		{
+			entry.mhz     = (int)(chans.ic_chans[i].ic_freq / 1000);
+			entry.channel = chans.ic_chans[i].ic_ieee;
+
+			memcpy(&buf[bl], &entry, sizeof(struct iwinfo_freqlist_entry));
+			bl += sizeof(struct iwinfo_freqlist_entry);
+		}
+
+		*len = bl;
+		return 0;
+	}
+
+	return -1;
+}
+
 int madwifi_get_mbssid_support(const char *ifname, int *buf)
 {
 	/* We assume that multi bssid is always possible */
diff --git a/libs/iwinfo/src/iwinfo_madwifi.h b/libs/iwinfo/src/iwinfo_madwifi.h
index 9c5b7fa58..18511c80c 100644
--- a/libs/iwinfo/src/iwinfo_madwifi.h
+++ b/libs/iwinfo/src/iwinfo_madwifi.h
@@ -37,6 +37,7 @@ int madwifi_get_enctype(const char *ifname, char *buf);
 int madwifi_get_assoclist(const char *ifname, char *buf, int *len);
 int madwifi_get_txpwrlist(const char *ifname, char *buf, int *len);
 int madwifi_get_scanlist(const char *ifname, char *buf, int *len);
+int madwifi_get_freqlist(const char *ifname, char *buf, int *len);
 int madwifi_get_mbssid_support(const char *ifname, int *buf);
 
 #endif
diff --git a/libs/iwinfo/src/iwinfo_wext.c b/libs/iwinfo/src/iwinfo_wext.c
index 387cb13b4..eebaea6af 100644
--- a/libs/iwinfo/src/iwinfo_wext.c
+++ b/libs/iwinfo/src/iwinfo_wext.c
@@ -394,6 +394,37 @@ int wext_get_txpwrlist(const char *ifname, char *buf, int *len)
 	return -1;	
 }
 
+int wext_get_freqlist(const char *ifname, char *buf, int *len)
+{
+	struct iwreq wrq;
+	struct iw_range range;
+	struct iwinfo_freqlist_entry entry;
+	int i, bl;
+
+	wrq.u.data.pointer = (caddr_t) &range;
+	wrq.u.data.length  = sizeof(struct iw_range);
+	wrq.u.data.flags   = 0;
+
+	if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
+	{
+		bl = 0;
+
+		for(i = 0; i < range.num_frequency; i++)
+		{
+			entry.mhz     = wext_freq2mhz(&range.freq[i]);
+			entry.channel = range.freq[i].i;
+
+			memcpy(&buf[bl], &entry, sizeof(struct iwinfo_freqlist_entry));
+			bl += sizeof(struct iwinfo_freqlist_entry);
+		}
+
+		*len = bl;
+		return 0;
+	}
+
+	return -1;
+}
+
 int wext_get_mbssid_support(const char *ifname, int *buf)
 {
 	/* No multi bssid support atm */
diff --git a/libs/iwinfo/src/iwinfo_wext.h b/libs/iwinfo/src/iwinfo_wext.h
index dd1922fc8..7861fdc9f 100644
--- a/libs/iwinfo/src/iwinfo_wext.h
+++ b/libs/iwinfo/src/iwinfo_wext.h
@@ -38,6 +38,7 @@ int wext_get_enctype(const char *ifname, char *buf);
 int wext_get_assoclist(const char *ifname, char *buf, int *len);
 int wext_get_txpwrlist(const char *ifname, char *buf, int *len);
 int wext_get_scanlist(const char *ifname, char *buf, int *len);
+int wext_get_freqlist(const char *ifname, char *buf, int *len);
 int wext_get_mbssid_support(const char *ifname, int *buf);
 
 #endif
diff --git a/libs/iwinfo/src/iwinfo_wl.c b/libs/iwinfo/src/iwinfo_wl.c
index 8519dbc56..f8ee4f3e3 100644
--- a/libs/iwinfo/src/iwinfo_wl.c
+++ b/libs/iwinfo/src/iwinfo_wl.c
@@ -389,6 +389,11 @@ int wl_get_scanlist(const char *ifname, char *buf, int *len)
 	return wext_get_scanlist(ifname, buf, len);
 }
 
+int wl_get_freqlist(const char *ifname, char *buf, int *len)
+{
+	return wext_get_freqlist(ifname, buf, len);
+}
+
 int wl_get_mbssid_support(const char *ifname, int *buf)
 {
 	wlc_rev_info_t revinfo;
diff --git a/libs/iwinfo/src/iwinfo_wl.h b/libs/iwinfo/src/iwinfo_wl.h
index 31832d985..2892715cd 100644
--- a/libs/iwinfo/src/iwinfo_wl.h
+++ b/libs/iwinfo/src/iwinfo_wl.h
@@ -37,6 +37,7 @@ int wl_get_enctype(const char *ifname, char *buf);
 int wl_get_assoclist(const char *ifname, char *buf, int *len);
 int wl_get_txpwrlist(const char *ifname, char *buf, int *len);
 int wl_get_scanlist(const char *ifname, char *buf, int *len);
+int wl_get_freqlist(const char *ifname, char *buf, int *len);
 int wl_get_mbssid_support(const char *ifname, int *buf);
 
 #endif
-- 
2.25.1