/*
 * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
 *
 * Marek Lindner, Simon Wunderlich
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */


#ifndef _NET_BATMAN_ADV_TYPES_H_
#define _NET_BATMAN_ADV_TYPES_H_

#include "packet.h"
#include "bitarray.h"

#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \
	((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
	 sizeof(struct unicast_packet) : \
	 sizeof(struct bcast_packet))))


struct batman_if {
	struct list_head list;
	int16_t if_num;
	char *dev;
	char if_status;
	char addr_str[ETH_STR_LEN];
	struct net_device *net_dev;
	atomic_t seqno;
	unsigned char *packet_buff;
	int packet_len;
	struct kobject *hardif_obj;
	struct rcu_head rcu;

};

/**
  *	orig_node - structure for orig_list maintaining nodes of mesh
  *	@primary_addr: hosts primary interface address
  *	@last_valid: when last packet from this node was received
  *	@bcast_seqno_reset: time when the broadcast seqno window was reset
  *	@batman_seqno_reset: time when the batman seqno window was reset
  *	@flags: for now only VIS_SERVER flag
  *	@last_real_seqno: last and best known squence number
  *	@last_ttl: ttl of last received packet
  *	@last_bcast_seqno: last broadcast sequence number received by this host
  *
  *	@candidates: how many candidates are available
  *	@selected: next bonding candidate
 */
struct orig_node {
	uint8_t orig[ETH_ALEN];
	uint8_t primary_addr[ETH_ALEN];
	struct neigh_node *router;
	TYPE_OF_WORD *bcast_own;
	uint8_t *bcast_own_sum;
	uint8_t tq_own;
	int tq_asym_penalty;
	unsigned long last_valid;
	unsigned long bcast_seqno_reset;
	unsigned long batman_seqno_reset;
	uint8_t  flags;
	unsigned char *hna_buff;
	int16_t hna_buff_len;
	uint32_t last_real_seqno;
	uint8_t last_ttl;
	TYPE_OF_WORD bcast_bits[NUM_WORDS];
	uint32_t last_bcast_seqno;
	struct list_head neigh_list;
	struct {
		uint8_t candidates;
		struct neigh_node *selected;
	} bond;
};

/**
  *	neigh_node
  *	@last_valid: when last packet via this neighbor was received
 */
struct neigh_node {
	struct list_head list;
	uint8_t addr[ETH_ALEN];
	uint8_t real_packet_count;
	uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
	uint8_t tq_index;
	uint8_t tq_avg;
	uint8_t last_ttl;
	struct neigh_node *next_bond_candidate;
	unsigned long last_valid;
	TYPE_OF_WORD real_bits[NUM_WORDS];
	struct orig_node *orig_node;
	struct batman_if *if_incoming;
};

struct bat_priv {
	struct net_device_stats stats;
	atomic_t aggregation_enabled;
	atomic_t bonding_enabled;
	atomic_t vis_mode;
	atomic_t orig_interval;
	atomic_t log_level;
	char num_ifaces;
	struct debug_log *debug_log;
	struct batman_if *primary_if;
	struct kobject *mesh_obj;
	struct dentry *debug_dir;
};

struct socket_client {
	struct list_head queue_list;
	unsigned int queue_len;
	unsigned char index;
	spinlock_t lock;
	wait_queue_head_t queue_wait;
	struct bat_priv *bat_priv;
};

struct socket_packet {
	struct list_head list;
	size_t icmp_len;
	struct icmp_packet_rr icmp_packet;
};

struct hna_local_entry {
	uint8_t addr[ETH_ALEN];
	unsigned long last_seen;
	char never_purge;
};

struct hna_global_entry {
	uint8_t addr[ETH_ALEN];
	struct orig_node *orig_node;
};

/**
  *	forw_packet - structure for forw_list maintaining packets to be
  *	              send/forwarded
 */
struct forw_packet {
	struct hlist_node list;
	unsigned long send_time;
	uint8_t own;
	struct sk_buff *skb;
	unsigned char *packet_buff;
	uint16_t packet_len;
	uint32_t direct_link_flags;
	uint8_t num_packets;
	struct delayed_work delayed_work;
	struct batman_if *if_incoming;
};

/* While scanning for vis-entries of a particular vis-originator
 * this list collects its interfaces to create a subgraph/cluster
 * out of them later
 */
struct if_list_entry {
	uint8_t addr[ETH_ALEN];
	bool primary;
	struct hlist_node list;
};

struct debug_log {
	char log_buff[LOG_BUF_LEN];
	unsigned long log_start;
	unsigned long log_end;
	spinlock_t lock;
	wait_queue_head_t queue_wait;
};

#endif /* _NET_BATMAN_ADV_TYPES_H_ */