ipacm/inc/IPACM_Wlan.h

/* 
Copyright (c) 2013, The Linux Foundation. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
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      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

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/*!
		@file
		IPACM_Wlan.h

		@brief
		This file implements the WLAN iface functionality.

		@Author
		Skylar Chang

*/
#ifndef IPACM_WLAN_H
#define IPACM_WLAN_H

#include <stdio.h>
#include <IPACM_CmdQueue.h>
#include <linux/msm_ipa.h>
#include "IPACM_Routing.h"
#include "IPACM_Filtering.h"
#include "IPACM_Lan.h"
#include "IPACM_Iface.h"
#include "IPACM_Conntrack_NATApp.h"

typedef struct _wlan_client_rt_hdl
{
	uint32_t wifi_rt_rule_hdl_v4;
	uint32_t wifi_rt_rule_hdl_v6[IPV6_NUM_ADDR];
	uint32_t wifi_rt_rule_hdl_v6_wan[IPV6_NUM_ADDR];
}wlan_client_rt_hdl;

typedef struct _ipa_wlan_client
{
	uint8_t mac[IPA_MAC_ADDR_SIZE];
	uint32_t v4_addr;
	uint32_t v6_addr[IPV6_NUM_ADDR][4];
	uint32_t hdr_hdl_v4;
	uint32_t hdr_hdl_v6;
	bool route_rule_set_v4;
	int route_rule_set_v6;
	bool ipv4_set;
	int ipv6_set;
	bool ipv4_header_set;
	bool ipv6_header_set;
	bool power_save_set;
	wlan_client_rt_hdl wifi_rt_hdl[0]; /* depends on number of tx properties */
}ipa_wlan_client;

typedef struct _wlan_ampdu_flt_rules
{
	uint32_t hdl[IPA_MAX_NUM_AMPDU_RULE];
	ipa_ip_type ip[IPA_MAX_NUM_AMPDU_RULE];
	int num_rules;
}wlan_ampdu_flt_rules;



/* wlan iface */
class IPACM_Wlan : public IPACM_Lan
{

public:

	IPACM_Wlan(int iface_index);
	~IPACM_Wlan(void);

	static int total_num_wifi_clients;

	void event_callback(ipa_cm_event_id event,
											void *data);

private:
	int wlan_client_len;
	ipa_wlan_client *wlan_client;

	int header_name_count; 
	int num_wifi_client;
	wlan_ampdu_flt_rules wlan_ampdu_flt_rule;

	NatApp *Nat_App;

	inline ipa_wlan_client* get_client_memptr(ipa_wlan_client *param, int cnt)
	{
	    char *ret = ((char *)param) + (wlan_client_len * cnt);
		return (ipa_wlan_client *)ret;
	}

	inline int get_wlan_client_index(uint8_t *mac_addr)
	{
		int cnt;
		int num_wifi_client_tmp = num_wifi_client;

		IPACMDBG("Passed MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
						 mac_addr[0], mac_addr[1], mac_addr[2],
						 mac_addr[3], mac_addr[4], mac_addr[5]);

		for(cnt = 0; cnt < num_wifi_client_tmp; cnt++)
		{
			IPACMDBG("stored MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
							 get_client_memptr(wlan_client, cnt)->mac[0],
							 get_client_memptr(wlan_client, cnt)->mac[1],
							 get_client_memptr(wlan_client, cnt)->mac[2],
							 get_client_memptr(wlan_client, cnt)->mac[3],
							 get_client_memptr(wlan_client, cnt)->mac[4],
							 get_client_memptr(wlan_client, cnt)->mac[5]);

			if(memcmp(get_client_memptr(wlan_client, cnt)->mac,
								mac_addr,
								sizeof(get_client_memptr(wlan_client, cnt)->mac)) == 0)
			{
				IPACMDBG("Matched client index: %d\n", cnt);
				return cnt;
			}
		}

		return IPACM_INVALID_INDEX;
	}

	inline int delete_default_qos_rtrules(int clt_indx, ipa_ip_type iptype)
	{
		uint32_t tx_index;
		uint32_t rt_hdl;
		int num_v6;

		if(iptype == IPA_IP_v4)
		{
		     for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++)
		     {
		        if((tx_prop->tx[tx_index].ip == IPA_IP_v4) && (get_client_memptr(wlan_client, clt_indx)->route_rule_set_v4==true)) /* for ipv4 */
			{
			       IPACMDBG("Delete client index %d ipv4 Qos rules for tx:%d \n", clt_indx,tx_index);
				rt_hdl = get_client_memptr(wlan_client, clt_indx)->wifi_rt_hdl[tx_index].wifi_rt_rule_hdl_v4;

				if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v4) == false)
				{
					return IPACM_FAILURE;
				}
			}
		     } /* end of for loop */

		     /* clean the 4 Qos ipv4 RT rules for client:clt_indx */
		     if(get_client_memptr(wlan_client, clt_indx)->route_rule_set_v4==true) /* for ipv4 */
		     {
				get_client_memptr(wlan_client, clt_indx)->route_rule_set_v4 = false;
		     }
		}

		if(iptype == IPA_IP_v6)
		{
		    for(tx_index = 0; tx_index < iface_query->num_tx_props; tx_index++)
		    {
		    		
		            if((tx_prop->tx[tx_index].ip == IPA_IP_v6) && (get_client_memptr(wlan_client, clt_indx)->route_rule_set_v6 != 0)) /* for ipv6 */
		            {
		    	        for(num_v6 =0;num_v6 < get_client_memptr(wlan_client, clt_indx)->route_rule_set_v6;num_v6++)	
		    	        {	
 		    	            IPACMDBG("Delete client index %d ipv6 Qos rules for %d-st ipv6 for tx:%d\n", clt_indx,num_v6,tx_index);
		    	        	rt_hdl = get_client_memptr(wlan_client, clt_indx)->wifi_rt_hdl[tx_index].wifi_rt_rule_hdl_v6[num_v6];                        
		    	        	if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false)
			{
		    	        		return IPACM_FAILURE;
		    	        	}

		    	        	rt_hdl = get_client_memptr(wlan_client, clt_indx)->wifi_rt_hdl[tx_index].wifi_rt_rule_hdl_v6_wan[num_v6];
				if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false)
				{
					return IPACM_FAILURE;
				}
			}
            
                    }			
		    } /* end of for loop */
		
		    /* clean the 4 Qos ipv6 RT rules for client:clt_indx */
		    if(get_client_memptr(wlan_client, clt_indx)->route_rule_set_v6 != 0) /* for ipv6 */
		    {
		                 get_client_memptr(wlan_client, clt_indx)->route_rule_set_v6 = 0;
                    }
		}
		
		return IPACM_SUCCESS;
	}

	/* handle wifi client initial,copy all partial headers (tx property) */
	int handle_wlan_client_init(uint8_t *mac_addr);

	/*handle wifi client */
	int handle_wlan_client_ipaddr(ipacm_event_data_all *data);

	/*handle wifi client routing rule*/
	int handle_wlan_client_route_rule(uint8_t *mac_addr, ipa_ip_type iptype);

	/*handle wifi client power-save mode*/
	int handle_wlan_client_pwrsave(uint8_t *mac_addr);

	/*handle wifi client del mode*/
	int handle_wlan_client_down_evt(uint8_t *mac_addr);

	/*duplicate ampdu filter rules for private subnet configuration*/
	int handle_private_subnet(ipa_ip_type iptype);

	/*duplicate ampdu filter rules for initial iface configuration*/
	int init_fl_rule(ipa_ip_type iptype);

	/*duplicate ampdu filter rules for new_address event*/
	int handle_addr_evt(ipacm_event_data_addr *data);

	/*duplicate ampdu filter rules for wan_up event*/
	int handle_wan_up(void);

	/*delete ampdu filter rules for wan_down event*/
	int handle_wan_down(void);

	/*duplicate ampdu filter rules for software_routing event*/
	int handle_software_routing_enable(void);

	/*delete ampdu filter rules for disabling software_routing event*/
	int handle_software_routing_disable(void);

	/*handle wlan iface down event*/
	int handle_down_evt();
};


#endif /* IPACM_WLAN_H */