ipacm/inc/IPACM_Lan.h

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/*!
	@file
	IPACM_Lan.h

	@brief
	This file implements the LAN iface definitions

	@Author
	Skylar Chang

*/
#ifndef IPACM_LAN_H
#define IPACM_LAN_H

#include <stdio.h>
#include <linux/msm_ipa.h>

#include "IPACM_CmdQueue.h"
#include "IPACM_Iface.h"
#include "IPACM_Routing.h"
#include "IPACM_Filtering.h"

#define IPA_MAX_NUM_UNICAST_ROUTE_RULES  6
#define IPA_WAN_DEFAULT_FILTER_RULE_HANDLES  1
#define IPA_PRIV_SUBNET_FILTER_RULE_HANDLES  3

/* store each lan-iface unicast routing rule and its handler*/
struct ipa_lan_rt_rule
{
	ipa_ip_type ip;
	uint32_t v4_addr;
	uint32_t v4_addr_mask;
	uint32_t v6_addr[4];
	uint32_t rt_rule_hdl[0];
};

/* lan iface */
class IPACM_Lan : public IPACM_Iface
{
public:

	IPACM_Lan(int iface_index);
	~IPACM_Lan();

	/* store lan's wan-up filter rule handlers */
	uint32_t lan_wan_fl_rule_hdl[IPA_WAN_DEFAULT_FILTER_RULE_HANDLES];

	/* store private-subnet filter rule handlers */
	uint32_t private_fl_rule_hdl[IPA_PRIV_SUBNET_FILTER_RULE_HANDLES];

	/* LAN-iface's callback function */
	void event_callback(ipa_cm_event_id event,
											void *data);

	/* configure filter rule for wan_up event*/
	virtual int handle_wan_up(void);

	/* delete filter rule for wan_down event*/
	virtual int handle_wan_down(void);

	/* configure private subnet filter rules*/
	virtual int handle_private_subnet(ipa_ip_type iptype);

	/* handle new_address event*/
	int handle_addr_evt(ipacm_event_data_addr *data);

private:

	/* dynamically allocate lan iface's unicast routing rule structure */
	int rt_rule_len;

	ipa_lan_rt_rule *route_rule;

	uint32_t v6_addr[IPV6_NUM_ADDR][4];

        int ipv6_set;

	/* store the number of lan-iface's unicast routing rule */
	int num_uni_rt;

	inline ipa_lan_rt_rule* get_rt_ruleptr(ipa_lan_rt_rule *param, int cnt)
	{
	    char *ret = ((char *)param) + (rt_rule_len * cnt);
	    return (ipa_lan_rt_rule *)ret;
	}

	/* handle unicast routing rule add event for ipv4 */
	int handle_route_add_evt(ipacm_event_data_addr *data);

	/* handle unicast routing rule add event for ipv6 */
	int handle_route_add_evt_v6(ipacm_event_data_all *data);

	/* handle unicast routing rule del event for ipv4 */
	int handle_route_del_evt(ipacm_event_data_addr *data);

	/* handle unicast routing rule del event for ipv6 */
	int handle_route_del_evt_v6(ipacm_event_data_all *data);

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

};

#endif /* IPACM_LAN_H */