net: rename net.if to net.iface

Reserved words are always reserved in Lua, so let's not have people
typing net["if"]...

app/modules/net.c

@@ -1008,7 +1008,7 @@ field_from_ipaddr(lua_State *L, const char * field_name, ip_addr_t* addr) {
   lua_setfield(L, -2, field_name);
 }
 
-static int net_if_info( lua_State* L ) {
+static int net_iface_info( lua_State* L ) {
   int ifidx = luaL_optint(L, 1, 0);
 
   struct netif * nif = eagle_lwip_getif(ifidx);
@@ -1088,9 +1088,9 @@ LROT_BEGIN(net_dns)
   LROT_FUNCENTRY( resolve, net_dns_static )
 LROT_END( net_dns, net_dns, 0 )
 
-LROT_BEGIN(net_if)
-  LROT_FUNCENTRY( info, net_if_info )
-LROT_END(net_if, net_if, 0)
+LROT_BEGIN(net_iface)
+  LROT_FUNCENTRY( info, net_iface_info )
+LROT_END(net_iface, net_iface, 0)
 
 LROT_BEGIN(net)
   LROT_FUNCENTRY( createServer, net_createServer )
@@ -1099,7 +1099,7 @@ LROT_BEGIN(net)
   LROT_FUNCENTRY( multicastJoin, net_multicastJoin )
   LROT_FUNCENTRY( multicastLeave, net_multicastLeave )
   LROT_TABENTRY( dns, net_dns )
-  LROT_TABENTRY( if, net_if )
+  LROT_TABENTRY( iface, net_iface )
 #ifdef TLS_MODULE_PRESENT
   LROT_TABENTRY( cert, tls_cert )
 #endif

docs/modules/net.md

@@ -618,14 +618,14 @@ Sets the IP of the DNS server used to resolve hostnames. Default: resolver1.open
 #### See also
 [`net.dns:getdnsserver()`](#netdnsgetdnsserver)
 
-# net.if Module
+# net.iface Module
 
-## net.if.info()
+## net.iface.info()
 
 Return information about a network interface, specified by index.
 
 #### Syntax
-`net.if.info(if_index)`
+`net.iface.info(if_index)`
 
 #### Parameters
 - `if_index` the interface index; on ESP8266, `0` is the wifi client (STA) and `1`
@@ -652,7 +652,7 @@ reported here; use [`net.dns:getdnsserver()`](#netdnsgetdnsserver).
 
 #### Example
 
-`print(net.if.info(0).dhcp.ntp_server)` will show the NTP server suggested by
+`print(net.iface.info(0).dhcp.ntp_server)` will show the NTP server suggested by
 the DHCP server.
 
 # net.cert Module