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/*
 * IPACM_LanToLan.h
 *
 *  Created on: Mar 4th, 2014
 *      Author: Shihuan Liu
 */

#ifndef IPACM_LANTOLAN_H
#define IPACM_LANTOLAN_H

#include <stdint.h>
#include "linux/msm_ipa.h"
#include "IPACM_Iface.h"
#include "IPACM_Defs.h"
#include "IPACM_Lan.h"

#ifdef FEATURE_IPA_ANDROID
#include <libxml/list.h>
#endif /* defined(FEATURE_IPA_ANDROID) */
#include <list>

#define MAX_NUM_CACHED_CLIENT_ADD_EVENT 10
#define MAX_NUM_IFACE 10
#define MAX_NUM_CLIENT 16

struct vlan_iface_info
{
	char vlan_iface_name[IPA_RESOURCE_NAME_MAX];
	uint8_t vlan_id;
	uint32_t vlan_iface_ipv6_addr[4];
	uint8_t vlan_client_mac[6];
	uint32_t vlan_client_ipv6_addr[4];
};

struct l2tp_vlan_mapping_info
{
	/* the following are l2tp iface info (name, session id) */
	char l2tp_iface_name[IPA_RESOURCE_NAME_MAX];
	uint8_t l2tp_session_id;
	/* the following are mdm vlan iface info (name, vlan id, ipv6 addr) */
	char vlan_iface_name[IPA_RESOURCE_NAME_MAX];
	uint8_t vlan_id;
	uint32_t vlan_iface_ipv6_addr[4];
	/* the following are MIB3 vlan client info (mac, ipv6 addr) */
	uint8_t vlan_client_mac[6];
	uint32_t vlan_client_ipv6_addr[4];
	/* the following is MIB3 l2tp client info (mac) */
	uint8_t l2tp_client_mac[6];
};

struct rt_rule_info
{
	int num_hdl[IPA_IP_MAX];	/* one client may need more than one routing rules on the same routing table depending on tx_prop */
	uint32_t  rule_hdl[IPA_IP_MAX][MAX_NUM_PROP];
};

struct l2tp_rt_rule_info
{
	uint32_t first_pass_hdr_hdl;	/* first pass hdr template (IPv4 and IPv6 use the same hdr template) */
	uint32_t first_pass_hdr_proc_ctx_hdl[IPA_IP_MAX]; /* first pass hdr proc ctx */
	uint32_t second_pass_hdr_hdl;	/* second pass hdr template (IPv4 and IPv6 use the same hdr template) */
	int num_rt_hdl[IPA_IP_MAX];		/* number of TX properties for IPv4 and IPv6 respectively */
	uint32_t  first_pass_rt_rule_hdl[IPA_IP_MAX][MAX_NUM_PROP];	/* first pass routing rule */
	uint32_t  second_pass_rt_rule_hdl[MAX_NUM_PROP];	/*second pass routing rule (only ipv6 rt rule is needed) */
};

struct client_info
{
	uint8_t mac_addr[6];
	rt_rule_info inter_iface_rt_rule_hdl[IPA_HDR_L2_MAX];	/* routing rule handles of inter interface communication based on source l2 header type */
	rt_rule_info intra_iface_rt_rule_hdl;	/* routing rule handles of inter interface communication */
	bool is_l2tp_client;
	l2tp_vlan_mapping_info *mapping_info;
	l2tp_rt_rule_info l2tp_rt_rule_hdl[IPA_HDR_L2_MAX];
	int ep;
};

struct flt_rule_info
{
	client_info *p_client;
	uint32_t flt_rule_hdl[IPA_IP_MAX];
	uint32_t l2tp_first_pass_flt_rule_hdl[IPA_IP_MAX];	/* L2TP filtering rules are destination MAC based */
	uint32_t l2tp_second_pass_flt_rule_hdl;
};

struct peer_iface_info
{
	class IPACM_LanToLan_Iface *peer;
	char rt_tbl_name_for_rt[IPA_IP_MAX][IPA_RESOURCE_NAME_MAX];
	char rt_tbl_name_for_flt[IPA_IP_MAX][IPA_RESOURCE_NAME_MAX];
	list<flt_rule_info> flt_rule;
};

class IPACM_LanToLan_Iface
{
public:
	IPACM_LanToLan_Iface(IPACM_Lan *p_iface);
	~IPACM_LanToLan_Iface();

	void add_client_rt_rule_for_new_iface();

	void add_all_inter_interface_client_flt_rule(ipa_ip_type iptype);

	void add_all_intra_interface_client_flt_rule(ipa_ip_type iptype);

	void handle_down_event();

	void handle_wlan_scc_mcc_switch();

	void handle_intra_interface_info();

	void handle_new_iface_up(char rt_tbl_name_for_flt[][IPA_RESOURCE_NAME_MAX], char rt_tbl_name_for_rt[][IPA_RESOURCE_NAME_MAX],
		IPACM_LanToLan_Iface *peer_iface);

	void handle_client_add(uint8_t *mac, bool is_l2tp_client, l2tp_vlan_mapping_info *mapping_info, int ep);

	void handle_client_del(uint8_t *mac);

	void print_data_structure_info();

	IPACM_Lan* get_iface_pointer();

	bool get_m_is_ip_addr_assigned(ipa_ip_type iptype);

	void set_m_is_ip_addr_assigned(ipa_ip_type iptype, bool value);

	bool get_m_support_inter_iface_offload();

	bool get_m_support_intra_iface_offload();

	void increment_ref_cnt_peer_l2_hdr_type(ipa_hdr_l2_type peer_l2_type);

	void decrement_ref_cnt_peer_l2_hdr_type(ipa_hdr_l2_type peer_l2_type);
#ifdef FEATURE_L2TP
	void switch_to_l2tp_iface();

	bool set_l2tp_iface(char *vlan_iface_name);

	bool is_l2tp_iface();

	void handle_l2tp_enable();

	void handle_l2tp_disable();
#endif
private:

	IPACM_Lan *m_p_iface;
	bool m_is_ip_addr_assigned[IPA_IP_MAX];
	bool m_support_inter_iface_offload;
	bool m_support_intra_iface_offload;
	bool m_is_l2tp_iface;

	int ref_cnt_peer_l2_hdr_type[IPA_HDR_L2_MAX];	/* reference count of l2 header type of peer interfaces */
	uint32_t hdr_proc_ctx_for_inter_interface[IPA_HDR_L2_MAX];
	uint32_t hdr_proc_ctx_for_intra_interface;
	uint32_t hdr_proc_ctx_for_l2tp;		/* uc needs to remove 62 bytes IPv6 + L2TP + inner Ethernet header */

	list<client_info> m_client_info;	/* client list */
	list<peer_iface_info> m_peer_iface_info;	/* peer information list */

	/* The following members are for intra-interface communication*/
	peer_iface_info m_intra_interface_info;

	void add_one_client_flt_rule(IPACM_LanToLan_Iface *peer_iface, client_info *client);

	void add_client_flt_rule(peer_iface_info *peer, client_info *client, ipa_ip_type iptype);

	void del_one_client_flt_rule(IPACM_LanToLan_Iface *peer_iface, client_info *client);

	void del_client_flt_rule(peer_iface_info *peer, client_info *client);

	void add_client_rt_rule(peer_iface_info *peer, client_info *client);

	void del_client_rt_rule(peer_iface_info *peer, client_info *client);

	void add_l2tp_client_rt_rule(peer_iface_info *peer, client_info *client);

	void clear_all_flt_rule_for_one_peer_iface(peer_iface_info *peer);

	void clear_all_rt_rule_for_one_peer_iface(peer_iface_info *peer);

	void add_hdr_proc_ctx(ipa_hdr_l2_type peer_l2_type);

	void del_hdr_proc_ctx(ipa_hdr_l2_type peer_l2_type);

	void print_peer_info(peer_iface_info *peer_info);

};

class IPACM_LanToLan : public IPACM_Listener
{

public:

	static IPACM_LanToLan* p_instance;
	static IPACM_LanToLan* get_instance();
#ifdef FEATURE_L2TP
	bool has_l2tp_iface();
#endif

private:

	IPACM_LanToLan();

	~IPACM_LanToLan();

	bool m_has_l2tp_iface;

	list<class IPACM_LanToLan_Iface> m_iface;

	list<ipacm_event_eth_bridge> m_cached_client_add_event;

	list<vlan_iface_info> m_vlan_iface;

	list<l2tp_vlan_mapping_info> m_l2tp_vlan_mapping;

	void handle_iface_up(ipacm_event_eth_bridge *data);

	void handle_iface_down(ipacm_event_eth_bridge *data);

	void handle_client_add(ipacm_event_eth_bridge *data);

	void handle_client_del(ipacm_event_eth_bridge *data);

	void handle_wlan_scc_mcc_switch(ipacm_event_eth_bridge *data);

#ifdef FEATURE_L2TP
	void handle_add_vlan_iface(ipa_ioc_vlan_iface_info *data);

	void handle_del_vlan_iface(ipa_ioc_vlan_iface_info *data);

	void handle_add_l2tp_vlan_mapping(ipa_ioc_l2tp_vlan_mapping_info *data);

	void handle_del_l2tp_vlan_mapping(ipa_ioc_l2tp_vlan_mapping_info *data);

	void handle_vlan_client_info(ipacm_event_data_all *data);

	void handle_vlan_iface_info(ipacm_event_data_all *data);
#endif

	void handle_new_iface_up(IPACM_LanToLan_Iface *new_iface, IPACM_LanToLan_Iface *exist_iface);

	void event_callback(ipa_cm_event_id event, void* param);

	void handle_cached_client_add_event(IPACM_Lan *p_iface);

	void clear_cached_client_add_event(IPACM_Lan *p_iface);

	void print_data_structure_info();

};

#endif