M7350/data-ipa-cfg-mgr/ipacm/inc/IPACM_Lan.h

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

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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"
#include "IPACM_Config.h"
#include "IPACM_Conntrack_NATApp.h"

#define IPA_WAN_DEFAULT_FILTER_RULE_HANDLES  1
#define IPA_PRIV_SUBNET_FILTER_RULE_HANDLES  3
#define IPA_NUM_ODU_ROUTE_RULES 2
#define MAX_WAN_UL_FILTER_RULES MAX_NUM_EXT_PROPS
#define NUM_IPV4_ICMP_FLT_RULE 1
#define NUM_IPV6_ICMP_FLT_RULE 1

/* ndc bandwidth ipatetherstats <ifaceIn> <ifaceOut> */
/* <in->out_bytes> <in->out_pkts> <out->in_bytes> <out->in_pkts */

#define PIPE_STATS "%s %s %lu %lu %lu %lu"
#define IPA_PIPE_STATS_FILE_NAME "/data/misc/ipa/tether_stats"

/* 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];
};

typedef enum
{
	SRC_WLAN,
	SRC_LAN
} eth_bridge_src_iface;

typedef enum
{
	DST_WLAN,
	DST_LAN
} eth_bridge_dst_iface;

/* Support multiple eth client */
typedef struct _eth_client_rt_hdl
{
	uint32_t eth_rt_rule_hdl_v4;
	uint32_t eth_rt_rule_hdl_v6[IPV6_NUM_ADDR];
	uint32_t eth_rt_rule_hdl_v6_wan[IPV6_NUM_ADDR];
}eth_client_rt_hdl;

typedef struct _ipa_eth_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;
	eth_client_rt_hdl eth_rt_hdl[0]; /* depends on number of tx properties */
}ipa_eth_client;

struct lan2lan_flt_rule_hdl
{
	uint32_t rule_hdl;
	bool valid;
};

struct lan2lan_hdr_hdl
{
	uint32_t hdr_hdl;
	bool valid;
};

struct eth_bridge_client_flt_info
{
	uint8_t mac[IPA_MAC_ADDR_SIZE];
	uint32_t flt_rule_hdl_v4;
	bool flt_rule_set_v4;
	uint32_t flt_rule_hdl_v6;
	bool flt_rule_set_v6;
};

struct eth_bridge_client_rt_info
{
	uint8_t mac[IPA_MAC_ADDR_SIZE];
	uint32_t rt_rule_hdl[0];
};

struct hdr_proc_ctx_info
{
	uint32_t proc_ctx_hdl;
	bool valid;
};

struct eth_bridge_subnet_client_info
{
	uint8_t mac[IPA_MAC_ADDR_SIZE];
	int ipa_if_num;
};

/* 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_MAX_PRIVATE_SUBNET_ENTRIES];

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

	virtual int handle_wan_up(ipa_ip_type ip_type);

	/* configure filter rule for wan_up event*/
	virtual int handle_wan_up_ex(ipacm_ext_prop* ext_prop, ipa_ip_type iptype, uint8_t xlat_mux_id);

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

	/* delete filter rule for wan_down event*/
	virtual int handle_wan_down_v6(bool is_sta_mode);

	/* 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);

	int handle_addr_evt_odu_bridge(ipacm_event_data_addr* data);

	int handle_del_ipv6_addr(ipacm_event_data_all *data);

	static bool odu_up;

	/* install UL filter rule from Q6 */
	virtual int handle_uplink_filter_rule(ipacm_ext_prop* prop, ipa_ip_type iptype, uint8_t xlat_mux_id);

	int add_lan2lan_flt_rule(ipa_ip_type iptype, uint32_t src_v4_addr, uint32_t dst_v4_addr, uint32_t* src_v6_addr, uint32_t* dst_v6_addr, uint32_t* rule_hdl);

	int del_lan2lan_flt_rule(ipa_ip_type iptype, uint32_t rule_hdl);

	virtual int add_lan2lan_hdr(ipa_ip_type iptype, uint8_t* src_mac, uint8_t* dst_mac, uint32_t* hdr_hdl);

	int add_lan2lan_rt_rule(ipa_ip_type iptype, uint32_t src_v4_addr, uint32_t dst_v4_addr,
								uint32_t* src_v6_addr, uint32_t* dst_v6_addr, uint32_t hdr_hdl, lan_to_lan_rt_rule_hdl* rule_hdl);

	int del_lan2lan_rt_rule(ipa_ip_type iptype, lan_to_lan_rt_rule_hdl);

	int del_lan2lan_hdr(ipa_ip_type iptype, uint32_t hdr_hdl);

	int handle_cradle_wan_mode_switch(bool is_wan_bridge_mode);

	int install_ipv4_icmp_flt_rule();

	static ipa_hdr_l2_type lan_hdr_type;
	static ipa_hdr_l2_type wlan_hdr_type;

	static uint32_t usb_hdr_template_hdl;
	static uint32_t wlan_hdr_template_hdl;
	static uint32_t cpe_hdr_template_hdl;

	static hdr_proc_ctx_info lan_to_wlan_hdr_proc_ctx, wlan_to_usb_hdr_proc_ctx, wlan_to_cpe_hdr_proc_ctx;
	static hdr_proc_ctx_info wlan_to_wlan_hdr_proc_ctx;
	static hdr_proc_ctx_info cpe_to_usb_hdr_proc_ctx, usb_to_cpe_hdr_proc_ctx;

	static eth_bridge_subnet_client_info eth_bridge_wlan_client[IPA_LAN_TO_LAN_MAX_WLAN_CLIENT];
	static eth_bridge_subnet_client_info eth_bridge_lan_client[IPA_LAN_TO_LAN_MAX_LAN_CLIENT];

	static int num_wlan_client;
	static int num_lan_client;

	static bool is_usb_up;
	static bool is_cpe_up;

protected:

	lan2lan_flt_rule_hdl wlan_client_flt_rule_hdl_v4[IPA_LAN_TO_LAN_MAX_WLAN_CLIENT];
	lan2lan_flt_rule_hdl wlan_client_flt_rule_hdl_v6[IPA_LAN_TO_LAN_MAX_WLAN_CLIENT];
	lan2lan_flt_rule_hdl lan_client_flt_rule_hdl_v4[IPA_LAN_TO_LAN_MAX_LAN_CLIENT];
	lan2lan_flt_rule_hdl lan_client_flt_rule_hdl_v6[IPA_LAN_TO_LAN_MAX_LAN_CLIENT];

	eth_bridge_client_flt_info eth_bridge_wlan_client_flt_info[IPA_LAN_TO_LAN_MAX_WLAN_CLIENT];
	eth_bridge_client_flt_info eth_bridge_lan_client_flt_info[IPA_LAN_TO_LAN_MAX_LAN_CLIENT];

	int wlan_client_flt_info_count;
	int lan_client_flt_info_count;

	int client_rt_info_size_v4;
	int client_rt_info_size_v6;

	eth_bridge_client_rt_info* eth_bridge_lan_client_rt_from_lan_info_v4;
	int lan_client_rt_from_lan_info_count_v4;
	eth_bridge_client_rt_info* eth_bridge_lan_client_rt_from_lan_info_v6;
	int lan_client_rt_from_lan_info_count_v6;
	eth_bridge_client_rt_info* eth_bridge_lan_client_rt_from_wlan_info_v4;
	int lan_client_rt_from_wlan_info_count_v4;
	eth_bridge_client_rt_info* eth_bridge_lan_client_rt_from_wlan_info_v6;
	int lan_client_rt_from_wlan_info_count_v6;

	int each_client_rt_rule_count_v4;
	int each_client_rt_rule_count_v6;

	virtual int eth_bridge_handle_dummy_wlan_client_flt_rule(ipa_ip_type iptype);

	virtual int eth_bridge_handle_dummy_lan_client_flt_rule(ipa_ip_type iptype);

	int eth_bridge_add_lan_client_flt_rule(uint8_t* mac, ipa_ip_type iptype);

	int eth_bridge_del_lan_client_flt_rule(uint8_t* mac);

	int eth_bridge_add_wlan_client_flt_rule(uint8_t* mac, ipa_ip_type iptype);

	int eth_bridge_del_wlan_client_flt_rule(uint8_t* mac);

	int eth_bridge_post_lan_client_event(uint8_t* mac_addr, ipa_cm_event_id evt);

	int add_hdr_proc_ctx();

	int del_hdr_proc_ctx();

	ipa_hdr_proc_type get_hdr_proc_type(ipa_hdr_l2_type t1, ipa_hdr_l2_type t2);

	virtual int eth_bridge_install_cache_wlan_client_flt_rule(ipa_ip_type iptype);

	virtual int eth_bridge_install_cache_lan_client_flt_rule(ipa_ip_type iptype);

	int eth_bridge_add_lan_client_rt_rule(uint8_t* mac, eth_bridge_src_iface src, ipa_ip_type iptype);

	int eth_bridge_del_lan_client_rt_rule(uint8_t* mac, eth_bridge_src_iface src);

	eth_bridge_client_rt_info* eth_bridge_get_client_rt_info_ptr(uint8_t index, eth_bridge_src_iface src, ipa_ip_type iptype);

	void eth_bridge_add_lan_client(uint8_t* mac);

	void eth_bridge_del_lan_client(uint8_t* mac);

	int eth_bridge_get_hdr_template_hdl(uint32_t* hdr_hdl);



	virtual int add_dummy_lan2lan_flt_rule(ipa_ip_type iptype);

	virtual int add_dummy_private_subnet_flt_rule(ipa_ip_type iptype);

	int handle_private_subnet_android(ipa_ip_type iptype);

	int reset_to_dummy_flt_rule(ipa_ip_type iptype, uint32_t rule_hdl);

	/*handle lan2lan client active*/
	int handle_lan2lan_client_active(ipacm_event_data_all *data, ipa_cm_event_id event);

	virtual int install_ipv6_prefix_flt_rule(uint32_t* prefix);

	virtual void delete_ipv6_prefix_flt_rule();

	int install_ipv6_icmp_flt_rule();

	void post_del_self_evt();

	/* handle tethering stats */
	int handle_tethering_stats_event(ipa_get_data_stats_resp_msg_v01 *data);

	/* handle tethering client */
	int handle_tethering_client(bool reset, ipacm_client_enum ipa_client);

	lan2lan_flt_rule_hdl lan2lan_flt_rule_hdl_v4[MAX_OFFLOAD_PAIR];
	lan2lan_flt_rule_hdl lan2lan_flt_rule_hdl_v6[MAX_OFFLOAD_PAIR];

	uint8_t num_lan2lan_flt_rule_v4;
	uint8_t num_lan2lan_flt_rule_v6;

	lan2lan_hdr_hdl lan2lan_hdr_hdl_v4[MAX_OFFLOAD_PAIR];
	lan2lan_hdr_hdl lan2lan_hdr_hdl_v6[MAX_OFFLOAD_PAIR];

	/* store ipv4 UL filter rule handlers from Q6*/
	uint32_t wan_ul_fl_rule_hdl_v4[MAX_WAN_UL_FILTER_RULES];

	/* store ipv6 UL filter rule handlers from Q6*/
	uint32_t wan_ul_fl_rule_hdl_v6[MAX_WAN_UL_FILTER_RULES];

	virtual void install_tcp_ctl_flt_rule(ipa_ip_type iptype);

	uint32_t ipv4_icmp_flt_rule_hdl[NUM_IPV4_ICMP_FLT_RULE];
	uint32_t tcp_ctl_flt_rule_hdl_v4[NUM_TCP_CTL_FLT_RULE];
	uint32_t tcp_ctl_flt_rule_hdl_v6[NUM_TCP_CTL_FLT_RULE];

	uint32_t ipv6_prefix_flt_rule_hdl[NUM_IPV6_PREFIX_FLT_RULE];
	uint32_t ipv6_icmp_flt_rule_hdl[NUM_IPV6_ICMP_FLT_RULE];

	int num_wan_ul_fl_rule_v4;
	int num_wan_ul_fl_rule_v6;

	bool is_active;
	bool modem_ul_v4_set;
	bool modem_ul_v6_set;

	uint32_t if_ipv4_subnet;

	/* expected modem UL rules starting index */
	int exp_index_v4;
	int exp_index_v6;

private:

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

	bool is_mode_switch; /* indicate mode switch, need post internal up event */

	int eth_client_len;

	ipa_eth_client *eth_client;

	int header_name_count;

	int num_eth_client;

	NatApp *Nat_App;

	int ipv6_set;

	uint32_t ODU_hdr_hdl_v4, ODU_hdr_hdl_v6;

	uint32_t *odu_route_rule_v4_hdl;

	uint32_t *odu_route_rule_v6_hdl;

	bool ipv4_header_set;

	bool ipv6_header_set;

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

	inline int get_eth_client_index(uint8_t *mac_addr)
	{
		int cnt;
		int num_eth_client_tmp = num_eth_client;

		IPACMDBG_H("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_eth_client_tmp; cnt++)
		{
			IPACMDBG_H("stored MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
							 get_client_memptr(eth_client, cnt)->mac[0],
							 get_client_memptr(eth_client, cnt)->mac[1],
							 get_client_memptr(eth_client, cnt)->mac[2],
							 get_client_memptr(eth_client, cnt)->mac[3],
							 get_client_memptr(eth_client, cnt)->mac[4],
							 get_client_memptr(eth_client, cnt)->mac[5]);

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

		return IPACM_INVALID_INDEX;
	}

	inline int delete_eth_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(eth_client, clt_indx)->route_rule_set_v4==true)) /* for ipv4 */
				{
					IPACMDBG_H("Delete client index %d ipv4 RT-rules for tx:%d\n",clt_indx,tx_index);
					rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v4;

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

		     /* clean the ipv4 RT rules for eth-client:clt_indx */
		     if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v4==true) /* for ipv4 */
		     {
				get_client_memptr(eth_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(eth_client, clt_indx)->route_rule_set_v6 != 0)) /* for ipv6 */
				{
					for(num_v6 =0;num_v6 < get_client_memptr(eth_client, clt_indx)->route_rule_set_v6;num_v6++)
					{
						IPACMDBG_H("Delete client index %d ipv6 RT-rules for %d-st ipv6 for tx:%d\n", clt_indx,num_v6,tx_index);
						rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_rt_rule_hdl_v6[num_v6];
						if(m_routing.DeleteRoutingHdl(rt_hdl, IPA_IP_v6) == false)
							{
								return IPACM_FAILURE;
							}

							rt_hdl = get_client_memptr(eth_client, clt_indx)->eth_rt_hdl[tx_index].eth_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 ipv6 RT rules for eth-client:clt_indx */
		    if(get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 != 0) /* for ipv6 */
		    {
		        get_client_memptr(eth_client, clt_indx)->route_rule_set_v6 = 0;
            }
		}

		return IPACM_SUCCESS;
	}

	/* handle eth client initial, construct full headers (tx property) */
	int handle_eth_hdr_init(uint8_t *mac_addr);

	/* handle eth client ip-address */
	int handle_eth_client_ipaddr(ipacm_event_data_all *data);

	/* handle eth client routing rule*/
	int handle_eth_client_route_rule(uint8_t *mac_addr, ipa_ip_type iptype);

	/*handle eth client del mode*/
	int handle_eth_client_down_evt(uint8_t *mac_addr);

	/* handle odu client initial, construct full headers (tx property) */
	int handle_odu_hdr_init(uint8_t *mac_addr);

	/* handle odu default route rule configuration */
	int handle_odu_route_add();

	/* handle odu default route rule deletion */
	int handle_odu_route_del();

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

	/*handle lan2lan internal mesg posting*/
	int post_lan2lan_client_disconnect_msg(ipa_ip_type iptype);

	/*handle reset usb-client rt-rules */
	int handle_lan_client_reset_rt(ipa_ip_type iptype);
};

#endif /* IPACM_LAN_H */