luci-app-mtk: show tx power info

package/mtk/applications/luci-app-mtk/luasrc/view/admin_mtk/mtk_wifi_overview.htm

@@ -85,7 +85,11 @@ local chipname
                         <span> <%:Work mode%>: <% if dev.ApCliEnable == "1" then %> APCli <% else %> AP <% end %> <br/> </span>
                         <%local temp = mtkwifi.get_temp(dev.devname)%>
                         <%if temp then%>
-                            <span> <%:Tempature%>: <%=temp%>&#176;C</span>
+                            <span> <%:Tempature%>: <%=temp%>&#176;C <br/> </span>
+                        <%end%>
+                        <%local txpwr = mtkwifi.get_txpwr(dev.devname)%>
+                        <%if txpwr then%>
+                            <span> <%:Tx Power%>: <%=txpwr%> dbm <br/> </span>
                         <%end%>
                         <%end%>
                     </td>

package/mtk/applications/luci-app-mtk/po/zh_Hans/mtk.po

@@ -46,6 +46,9 @@ msgstr "始终关闭"
 msgid "Tempature"
 msgstr "温度"
 
+msgid "Tx Power"
+msgstr "发射功率"
+
 msgid "Driver version"
 msgstr "驱动版本"
 

package/mtk/applications/luci-app-mtk/root/usr/lib/lua/mtkwifi.lua

@@ -344,6 +344,21 @@ function mtkwifi.__profile_applied_settings_path(profile)
     return bak
 end
 
+function mtkwifi.get_txpwr(devname)
+    local l1dat, l1 = mtkwifi.__get_l1dat()
+    local dridx = l1.DEV_RINDEX
+    local devs = mtkwifi.get_all_devs()
+
+    if devs and devs[devname] then
+        local ifname = l1dat and l1dat[dridx][devname].main_ifname
+        if ifname then
+            return c_getTxPower(ifname)['txpower']
+        end
+    end
+
+    return nil
+end
+
 function mtkwifi.get_temp(devname)
     local vif_name = nil
     local devs = mtkwifi.get_all_devs()

package/mtk/applications/luci-app-mtk/src/ioctl_helper.c

@@ -20,6 +20,7 @@ int luaopen_ioctl_helper(lua_State *L)
 	lua_register(L,"c_getWMode",getWMOde);
 	lua_register(L,"c_getTempature",getTempature);
 	lua_register(L,"c_scanResult",scanResult);
+	lua_register(L,"c_getTxPower",getTxPower);
 	return 0;
 }
 
@@ -100,6 +101,44 @@ int getTempature(lua_State *L)
 	return 1;
 }
 
+static unsigned int get_txpower(const char *interface)
+{
+	int socket_id;
+	struct iwreq wrq;
+	int txpower = 0;
+	socket_id = socket(AF_INET, SOCK_DGRAM, 0);
+	if (socket_id < 0) {
+		perror("socket() failed");
+		return socket_id;
+	}
+
+	snprintf(wrq.ifr_name, sizeof(wrq.ifr_name), "%s", interface);
+	wrq.u.txpower.flags = 0;
+
+	if(ioctl(socket_id, SIOCGIWTXPOW, &wrq) >= 0) {
+		txpower = wrq.u.txpower.value;
+	} else {
+		fprintf(stderr, "%s: ioctl fail\n", __func__);
+	}
+
+	close(socket_id);
+
+	return txpower;
+}
+
+int getTxPower(lua_State *L)
+{
+	char tempstr[5] = {0};
+	const char *interface = luaL_checkstring(L, 1);
+	snprintf(tempstr, sizeof(tempstr), "%d", get_txpower(interface));
+	lua_newtable(L);
+	lua_pushstring(L, "txpower");  /* push key */
+	lua_pushstring(L, tempstr);  /* push value */
+	lua_settable(L, -3);
+	/* Returning one table which is already on top of Lua stack. */
+	return 1;
+}
+
 static unsigned int get_w_mode(const char *interface)
 {
 	int socket_id;

package/mtk/applications/luci-app-mtk/src/mtwifi.h

@@ -208,6 +208,7 @@ int get_macaddr(lua_State *L);
 int convert_string_display(lua_State *L);
 int StaInfo(lua_State *L);
 int getWMOde(lua_State *L);
+int getTxPower(lua_State *L);
 int getTempature(lua_State *L);
 int scanResult(lua_State *L);
 void getRate(HTTRANSMIT_SETTING_FIX HTSetting, ULONG *fLastTxRxRate);