ipacm/src/IPACM_IfaceManager.cpp

/*
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modification, are permitted provided that the following conditions are
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		* Redistributions in binary form must reproduce the above
			copyright notice, this list of conditions and the following
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			contributors may be used to endorse or promote products derived
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*/
/*!
	@file
	IPACM_IfaceManager.cpp

	@brief
	This file implements the IPAM iface_manager functionality.

	@Author
	Skylar Chang

*/
#include <string.h>
#include <sys/ioctl.h>

#include <IPACM_IfaceManager.h>
#include <IPACM_EvtDispatcher.h>
#include <IPACM_Defs.h>
#include <IPACM_Wlan.h>
#include <IPACM_Lan.h>
#include <IPACM_Wan.h>
#include <IPACM_Iface.h>
#include <IPACM_Log.h>

iface_instances *IPACM_IfaceManager::head = NULL;

IPACM_IfaceManager::IPACM_IfaceManager()
{
	IPACM_EvtDispatcher::registr(IPA_CFG_CHANGE_EVENT, this); 		// register for IPA_CFG_CHANGE event
	IPACM_EvtDispatcher::registr(IPA_LINK_UP_EVENT, this);
	IPACM_EvtDispatcher::registr(IPA_WLAN_AP_LINK_UP_EVENT, this);  // register for wlan AP-iface
	IPACM_EvtDispatcher::registr(IPA_WLAN_STA_LINK_UP_EVENT, this); // register for wlan STA-iface
#ifndef FEATURE_IPA_ANDROID
	/* only MDM targets support device on bridge mode */
	IPACM_EvtDispatcher::registr(IPA_BRIDGE_LINK_UP_EVENT, this); 	// register for IPA_BRIDGE_LINK_UP_EVENT event
#endif /* not defined(FEATURE_IPA_ANDROID)*/
	IPACM_EvtDispatcher::registr(IPA_USB_LINK_UP_EVENT, this); // register for USB-iface
	IPACM_EvtDispatcher::registr(IPA_WAN_EMBMS_LINK_UP_EVENT, this);  // register for wan eMBMS-iface
	return;
}

void IPACM_IfaceManager::event_callback(ipa_cm_event_id event, void *param)
{
	int ipa_interface_index;
	ipacm_event_data_fid *evt_data = (ipacm_event_data_fid *)param;
	ipacm_event_data_mac *StaData = (ipacm_event_data_mac *)param;
	ipacm_event_data_all *data_all = (ipacm_event_data_all *)param;
	ipacm_ifacemgr_data ifmgr_data;

	memset(&ifmgr_data,0,sizeof(ifmgr_data));

	switch(event)
	{
		case IPA_CFG_CHANGE_EVENT:
				IPACMDBG_H(" RESET IPACM_cfg \n");
				IPACM_Iface::ipacmcfg->Init();
			break;
		case IPA_BRIDGE_LINK_UP_EVENT:
			IPACMDBG_H(" Save the bridge0 mac info in IPACM_cfg \n");
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(data_all->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_BRIDGE_LINK_UP_EVENT: not supported iface id: %d\n", data_all->if_index);
				break;
			}
			/* check if iface is bridge interface*/
			if (strcmp(IPACM_Iface::ipacmcfg->ipa_virtual_iface_name, IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name) == 0)
			{
				IPACM_Iface::ipacmcfg->ipa_bridge_enable = true;
				memcpy(IPACM_Iface::ipacmcfg->bridge_mac,
								data_all->mac_addr,
								sizeof(IPACM_Iface::ipacmcfg->bridge_mac));
				IPACMDBG_H("cached bridge0 MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
						 IPACM_Iface::ipacmcfg->bridge_mac[0], IPACM_Iface::ipacmcfg->bridge_mac[1], IPACM_Iface::ipacmcfg->bridge_mac[2],
						 IPACM_Iface::ipacmcfg->bridge_mac[3], IPACM_Iface::ipacmcfg->bridge_mac[4], IPACM_Iface::ipacmcfg->bridge_mac[5]);
			}
			break;
		case IPA_LINK_UP_EVENT:
			IPACMDBG_H("Recieved IPA_LINK_UP_EVENT event: link up %d: \n", evt_data->if_index);
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(evt_data->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_LINK_UP_EVENT: not supported iface id: %d\n", evt_data->if_index);
				break;
			}
			/* LTE-backhaul */
			if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == EMBMS_IF)
			{
				IPACMDBG("WAN-EMBMS (%s) link already up, iface: %d: \n", IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,evt_data->if_index);
			}
			else if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == WAN_IF)
			{
				IPACMDBG_H("WAN-LTE (%s) link up, iface: %d: \n", IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,evt_data->if_index);
				ifmgr_data.if_index = evt_data->if_index;
				ifmgr_data.if_type = Q6_WAN;
				create_iface_instance(&ifmgr_data);
			}
			break;

		case IPA_USB_LINK_UP_EVENT:
			IPACMDBG_H("Recieved IPA_USB_LINK_UP_EVENT event: link up %d: \n", evt_data->if_index);
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(evt_data->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_USB_LINK_UP_EVENT: not supported iface id: %d\n", evt_data->if_index);
				break;
			}
			/* check if it's WAN_IF */
			if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == WAN_IF)
			{
				/* usb-backhaul using sta_mode ECM_WAN*/
				IPACMDBG_H("WAN-usb (%s) link up, iface: %d: \n", IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name, evt_data->if_index);
				ifmgr_data.if_index = evt_data->if_index;
				ifmgr_data.if_type = ECM_WAN;
				create_iface_instance(&ifmgr_data);
			}
			else
			{
				ifmgr_data.if_index = evt_data->if_index;
				ifmgr_data.if_type = Q6_WAN;
				create_iface_instance(&ifmgr_data);
			}
			break;

		case IPA_WLAN_AP_LINK_UP_EVENT:
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(evt_data->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_WLAN_AP_LINK_UP_EVENT: not supported iface id: %d\n", evt_data->if_index);
				break;
			}
			/* change iface category from unknown to WLAN_IF */
			if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == UNKNOWN_IF)
			{
				IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat = WLAN_IF;
				IPACMDBG_H("WLAN AP (%s) link up, iface: %d: \n", IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,evt_data->if_index);
				ifmgr_data.if_index = evt_data->if_index;
				ifmgr_data.if_type = Q6_WAN;
				create_iface_instance(&ifmgr_data);
			}
			else
			{
				IPACMDBG_H("iface %s already up and act as %d mode: \n",IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat);
			}
			break;

		case IPA_WLAN_STA_LINK_UP_EVENT:
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(StaData->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_WLAN_STA_LINK_UP_EVENT: not supported iface id: %d\n", StaData->if_index);
				break;
			}
			/* change iface category from unknown to WAN_IF */
			if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == UNKNOWN_IF)
			{
				/* wlan-backhaul using sta_mode WLAN_WAN */
				IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat = WAN_IF;
				IPACMDBG_H("WLAN STA (%s) link up, iface: %d: \n",
				IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name, StaData->if_index);

				ifmgr_data.if_index = StaData->if_index;
				ifmgr_data.if_type = WLAN_WAN;
				memcpy(ifmgr_data.mac_addr, StaData->mac_addr, sizeof(ifmgr_data.mac_addr));
				create_iface_instance(&ifmgr_data);
			}
			else
			{
				IPACMDBG_H("iface %s already up and act as %d mode: \n",
				IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,
						IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat);
			}
			break;

		/* Add new instance open for eMBMS iface and wan iface */
		case IPA_WAN_EMBMS_LINK_UP_EVENT:
			ipa_interface_index = IPACM_Iface::iface_ipa_index_query(evt_data->if_index);
			/* check for failure return */
			if (IPACM_FAILURE == ipa_interface_index) {
				IPACMERR("IPA_WAN_EMBMS_LINK_UP_EVENT: not supported iface id: %d\n", evt_data->if_index);
				break;
			}
			/* change iface category from unknown to EMBMS_IF */
			if ((IPACM_Iface::ipacmcfg->ipacm_odu_enable == true) && (IPACM_Iface::ipacmcfg->ipacm_odu_embms_enable == true))
			{
				IPACMDBG(" ODU-mode enable or not (%d) \n",IPACM_Iface::ipacmcfg->ipacm_odu_enable);
				if(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat == WAN_IF)
				{
					IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat=EMBMS_IF;
					IPACMDBG("WAN eMBMS (%s) link up, iface: %d: \n", IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,evt_data->if_index);
					ifmgr_data.if_index = StaData->if_index;
					ifmgr_data.if_type = Q6_WAN;
					create_iface_instance(&ifmgr_data);
				}
				else
				{
					IPACMDBG("iface %s already up and act as %d mode: \n",IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat);
				}
			}
			break;

		default:
			break;
	}
	return;
}

int IPACM_IfaceManager::create_iface_instance(ipacm_ifacemgr_data *param)
{
	int if_index = param->if_index;
	ipacm_wan_iface_type is_sta_mode = param->if_type;

	int ipa_interface_index;
	ipa_interface_index = IPACM_Iface::iface_ipa_index_query(if_index);

	if(ipa_interface_index == INVALID_IFACE)
	{
			IPACMDBG_H("Unhandled interface received, fid: %d\n",if_index);
			return IPACM_SUCCESS;
	}

	/* check if duplicate instance*/
	if(SearchInstance(ipa_interface_index) == IPA_INSTANCE_NOT_FOUND)
	{
		/* IPA_INSTANCE_NOT_FOUND */
		switch(IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat)
		{

		case LAN_IF:
			{
				IPACMDBG_H("Creating Lan interface\n");
				IPACM_Lan *lan = new IPACM_Lan(ipa_interface_index);
				IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, lan);
				//IPACM_EvtDispatcher::registr(IPA_ROUTE_ADD_EVENT, lan);
				//IPACM_EvtDispatcher::registr(IPA_ROUTE_DEL_EVENT, lan);
				IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, lan);
				IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_DEL_EVENT, lan);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, lan);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, lan);
#ifdef FEATURE_IPA_ANDROID
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_TETHER, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6_TETHER, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_TETHER, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6_TETHER, lan);
#ifdef FEATURE_IPACM_HAL
				IPACM_EvtDispatcher::registr(IPA_DOWNSTREAM_ADD, lan);
				IPACM_EvtDispatcher::registr(IPA_DOWNSTREAM_DEL, lan);
#endif
#else
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN, lan);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6, lan);
#endif
				IPACM_EvtDispatcher::registr(IPA_CFG_CHANGE_EVENT, lan); 				// register for IPA_CFG_CHANGE event
				IPACM_EvtDispatcher::registr(IPA_PRIVATE_SUBNET_CHANGE_EVENT, lan); 	// register for IPA_PRIVATE_SUBNET_CHANGE_EVENT event
#ifdef FEATURE_IPA_ANDROID
				IPACM_EvtDispatcher::registr(IPA_TETHERING_STATS_UPDATE_EVENT, lan);
#endif
				IPACM_EvtDispatcher::registr(IPA_CRADLE_WAN_MODE_SWITCH, lan);
				IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, lan);
				/* IPA_LAN_DELETE_SELF should be always last */
				IPACM_EvtDispatcher::registr(IPA_LAN_DELETE_SELF, lan);
				IPACMDBG_H("ipa_LAN (%s):ipa_index (%d) instance open/registr ok\n", lan->dev_name, lan->ipa_if_num);
				registr(ipa_interface_index, lan);
				/* solve the new_addr comes earlier issue */
                                IPACM_Iface::iface_addr_query(if_index);
			}
			break;

		case ETH_IF:
			{
				IPACMDBG_H("Creating ETH interface in router mode\n");
				IPACM_Lan *ETH = new IPACM_Lan(ipa_interface_index);
				IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, ETH);
				IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, ETH);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, ETH);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, ETH);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP, ETH);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6, ETH);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN, ETH);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6, ETH);
				IPACM_EvtDispatcher::registr(IPA_CRADLE_WAN_MODE_SWITCH, ETH);
				IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, ETH);
				/* IPA_LAN_DELETE_SELF should be always last */
				IPACM_EvtDispatcher::registr(IPA_LAN_DELETE_SELF, ETH);
				IPACMDBG_H("ipa_LAN (%s):ipa_index (%d) instance open/registr ok\n", ETH->dev_name, ETH->ipa_if_num);
				registr(ipa_interface_index, ETH);
				/* solve the new_addr comes earlier issue */
				IPACM_Iface::iface_addr_query(if_index);
			}
			break;

		case ODU_IF:
			{
				if(IPACM_Iface::ipacmcfg->ipacm_odu_router_mode == true)
				{
					IPACMDBG_H("Creating ODU interface in router mode\n");
					IPACM_Lan *odu = new IPACM_Lan(ipa_interface_index);
					IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, odu);
					IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, odu);
					IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_DEL_EVENT, odu);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, odu);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, odu);
					IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP, odu);
					IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6, odu);
					IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN, odu);
					IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6, odu);
					IPACM_EvtDispatcher::registr(IPA_CRADLE_WAN_MODE_SWITCH, odu);
					IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, odu);
					/* IPA_LAN_DELETE_SELF should be always last */
					IPACM_EvtDispatcher::registr(IPA_LAN_DELETE_SELF, odu);
					IPACMDBG_H("ipa_LAN (%s):ipa_index (%d) instance open/registr ok\n", odu->dev_name, odu->ipa_if_num);
					registr(ipa_interface_index, odu);
					/* solve the new_addr comes earlier issue */
					IPACM_Iface::iface_addr_query(if_index);
				}
				else
				{
					IPACMDBG_H("Creating ODU interface in bridge mode\n");
					IPACM_Lan *odu = new IPACM_Lan(ipa_interface_index);
					IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, odu);
					IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, odu);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, odu);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, odu);
					IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, odu);
					/* IPA_LAN_DELETE_SELF should be always last */
					IPACM_EvtDispatcher::registr(IPA_LAN_DELETE_SELF, odu);
					IPACMDBG_H("ipa_LAN (%s):ipa_index (%d) instance open/registr ok\n", odu->dev_name, odu->ipa_if_num);
					registr(ipa_interface_index, odu);
					/* solve the new_addr comes earlier issue */
					IPACM_Iface::iface_addr_query(if_index);
				}
			}
			break;

		case WLAN_IF:
			{
				IPACMDBG_H("Creating WLan interface\n");
				IPACM_Wlan *wl = new IPACM_Wlan(ipa_interface_index);
				IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_ROUTE_DEL_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_CLIENT_ADD_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_CLIENT_ADD_EVENT_EX, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_CLIENT_DEL_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_CLIENT_POWER_SAVE_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_CLIENT_RECOVER_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, wl);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, wl);
				IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, wl);
#ifdef FEATURE_IPA_ANDROID
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_TETHER, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6_TETHER, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_TETHER, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6_TETHER, wl);
#ifdef FEATURE_IPACM_HAL
				IPACM_EvtDispatcher::registr(IPA_DOWNSTREAM_ADD, wl);
				IPACM_EvtDispatcher::registr(IPA_DOWNSTREAM_DEL, wl);
#endif
#else
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_UP_V6, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN, wl);
				IPACM_EvtDispatcher::registr(IPA_HANDLE_WAN_DOWN_V6, wl);
#endif
				IPACM_EvtDispatcher::registr(IPA_PRIVATE_SUBNET_CHANGE_EVENT, wl); 	// register for IPA_PRIVATE_SUBNET_CHANGE_EVENT event
#ifdef FEATURE_ETH_BRIDGE_LE
				IPACM_EvtDispatcher::registr(IPA_CFG_CHANGE_EVENT, wl);
#endif
				IPACM_EvtDispatcher::registr(IPA_CRADLE_WAN_MODE_SWITCH, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_LINK_DOWN_EVENT, wl);
#ifndef FEATURE_IPA_ANDROID
				IPACM_EvtDispatcher::registr(IPA_WLAN_SWITCH_TO_SCC, wl);
				IPACM_EvtDispatcher::registr(IPA_WLAN_SWITCH_TO_MCC, wl);
#else
				IPACM_EvtDispatcher::registr(IPA_TETHERING_STATS_UPDATE_EVENT, wl);
#endif
				/* IPA_LAN_DELETE_SELF should be always last */
				IPACM_EvtDispatcher::registr(IPA_LAN_DELETE_SELF, wl);
				IPACMDBG_H("ipa_WLAN (%s):ipa_index (%d) instance open/registr ok\n", wl->dev_name, wl->ipa_if_num);
				registr(ipa_interface_index, wl);
				/* solve the new_addr comes earlier issue */
	            IPACM_Iface::iface_addr_query(if_index);
			}
			break;

		case WAN_IF:
			{
				if((IPACM_Iface::ipacmcfg->ipacm_odu_enable == false) || (IPACM_Iface::ipacmcfg->ipacm_odu_router_mode == true))
				{
					IPACMDBG_H("Creating Wan interface\n");
					IPACM_Wan *w;
					if(is_sta_mode == WLAN_WAN)
					{
						w = new IPACM_Wan(ipa_interface_index, is_sta_mode, param->mac_addr);
					}
					else
					{
						w = new IPACM_Wan(ipa_interface_index, is_sta_mode, NULL);
					}
					IPACM_EvtDispatcher::registr(IPA_ADDR_ADD_EVENT, w);
#ifdef FEATURE_IPA_ANDROID
					IPACM_EvtDispatcher::registr(IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT, w);
					IPACM_EvtDispatcher::registr(IPA_WAN_UPSTREAM_ROUTE_DEL_EVENT, w);
					if(is_sta_mode == Q6_WAN)
					{
						IPACM_EvtDispatcher::registr(IPA_NETWORK_STATS_UPDATE_EVENT, w);
					};
#else/* defined(FEATURE_IPA_ANDROID) */
					IPACM_EvtDispatcher::registr(IPA_ROUTE_ADD_EVENT, w);
					IPACM_EvtDispatcher::registr(IPA_ROUTE_DEL_EVENT, w);
#endif /* not defined(FEATURE_IPA_ANDROID)*/
					IPACM_EvtDispatcher::registr(IPA_FIREWALL_CHANGE_EVENT, w);
					IPACM_EvtDispatcher::registr(IPA_NEIGH_CLIENT_IP_ADDR_ADD_EVENT, w);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_ENABLE, w);
					IPACM_EvtDispatcher::registr(IPA_SW_ROUTING_DISABLE, w);
					IPACM_EvtDispatcher::registr(IPA_CFG_CHANGE_EVENT, w); 		// register for IPA_CFG_CHANGE event
					IPACM_EvtDispatcher::registr(IPA_WAN_XLAT_CONNECT_EVENT, w);
					if(is_sta_mode == WLAN_WAN)
					{
						IPACM_EvtDispatcher::registr(IPA_WLAN_LINK_DOWN_EVENT, w); // for STA mode
#ifndef FEATURE_IPA_ANDROID
						IPACM_EvtDispatcher::registr(IPA_WLAN_SWITCH_TO_SCC, w);
						IPACM_EvtDispatcher::registr(IPA_WLAN_SWITCH_TO_MCC, w);
#endif
					}
					else
					{
						IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, w);
					}

					IPACMDBG_H("ipa_WAN (%s):ipa_index (%d) instance open/registr ok\n", w->dev_name, w->ipa_if_num);
					registr(ipa_interface_index, w);
					/* solve the new_addr comes earlier issue */
					IPACM_Iface::iface_addr_query(if_index);
				}
			}
			break;

	    /* WAN-eMBMS instance */
		case EMBMS_IF:
			{
				IPACMDBG("Creating Wan-eMBSM interface\n");
				IPACM_Wan *embms = new IPACM_Wan(ipa_interface_index, is_sta_mode, NULL);
				IPACM_EvtDispatcher::registr(IPA_LINK_DOWN_EVENT, embms);
				IPACMDBG("ipa_WAN (%s):ipa_index (%d) instance open/registr ok\n", embms->dev_name, embms->ipa_if_num);
				registr(ipa_interface_index, embms);
			}
			break;

		default:
			IPACMDBG_H("Unhandled interface category received iface name: %s, category: %d\n",
			            IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].iface_name,
						       IPACM_Iface::ipacmcfg->iface_table[ipa_interface_index].if_cat);
			return IPACM_SUCCESS;
		}
	}
	return IPACM_SUCCESS;
}


int IPACM_IfaceManager::registr(int ipa_if_index, IPACM_Listener *obj)
{
	iface_instances *tmp = head,*nw;

	nw = (iface_instances *)malloc(sizeof(iface_instances));
	if(nw != NULL)
	{
		nw->ipa_if_index = ipa_if_index;
		nw->obj = obj;
		nw->next = NULL;
	}
	else
	{
		return IPACM_FAILURE;
	}

	if(head == NULL)
	{
		head = nw;
	}
	else
	{
		while(tmp->next)
		{
			tmp = tmp->next;
		}
		tmp->next = nw;
	}
	return IPACM_SUCCESS;
}

int IPACM_IfaceManager::deregistr(IPACM_Listener *param)
{
	iface_instances *tmp = head,*tmp1,*prev = head;

	while(tmp != NULL)
	{
		if(tmp->obj == param)
		{
			tmp1 = tmp;
			if(tmp == head)
			{
				head = head->next;
			}
			else if(tmp->next == NULL)
			{
				prev->next = NULL;
			}
			else
			{
				prev->next = tmp->next;
			}

			tmp = tmp->next;
			free(tmp1);
		}
		else
		{
			prev = tmp;
			tmp = tmp->next;
		}
	}
	return IPACM_SUCCESS;
}


int IPACM_IfaceManager::SearchInstance(int ipa_if_index)
{

	iface_instances *tmp = head;

	while(tmp != NULL)
	{
		if(ipa_if_index == tmp->ipa_if_index)
		{
			IPACMDBG_H("Find existed iface-instance name: %s\n",
							 IPACM_Iface::ipacmcfg->iface_table[ipa_if_index].iface_name);
			return IPA_INSTANCE_FOUND;
		}
		tmp = tmp->next;
	}

	IPACMDBG_H("No existed iface-instance name: %s,\n",
					 IPACM_Iface::ipacmcfg->iface_table[ipa_if_index].iface_name);

	return IPA_INSTANCE_NOT_FOUND;
}