/*
 * bab.h
 * Copyright (C) 1997-2000 SpellCaster Telecommunications Inc.
 * $Id: bab.h,v 1.2 2004/07/22 18:11:18 bcrl Exp $
 * Released under the GNU Public License. See LICENSE file for details.
 */


struct bundle;
struct net;

struct chan {
	spinlock_t		chan_lock;
	channel_t		*ch;
	struct bundle		*bundle;
	struct bundle		*allocd_bundle;
	struct net		*net;

	struct chan		*next;	/* next channel in bundle */

	struct chan		*multihop_other;

	struct sk_buff_head	tx_q;
	struct sk_buff_head	rx_q;

	wait_queue_head_t	tx_wait;
	wait_queue_head_t	rx_wait;
	wait_queue_head_t	wait;
	int			user_status;
	int			use_count;
	unsigned		user_calltypes;

	int			lflags;
	int			rflags;
	unsigned int		callid;
	int			mtu;

	int			idx;
	u32			m_seq;

	unsigned		m_valid : 1;
	unsigned		dialing : 1;
	unsigned		user_active : 1;

	unsigned long		activity_jiffies;
	struct bdev_stats	final_stats;
	struct rcu_head		rcu_head;
};

#define FRAG_HASH_SIZE	(1 << 8)		/* size of fragment hash bucket -- must be a power of 2 */
#define FRAG_HASH_MASK	(FRAG_HASH_SIZE - 1)

struct bundle {
	spinlock_t		bundle_lock;
	
	struct net_device	*bdev;
	unsigned		use;

	struct sk_buff		*frag_skb;
	unsigned		frag_offset, frag_num, frag_split;
	u32			frag_seq;
	unsigned		min_frags, max_frags;

	unsigned long		tx_bytes, rx_bytes;	/* needed under 2.0 for Bandwidth on demand */

	int			index;
	unsigned		num_chan;
	struct chan		*chan;		/* pointer to current channel to transmit to in bundle */

	struct sk_buff		*tx_skb;

	struct net_device_stats	stats;

	int			lflags;
	int			rflags;
	u32			m_seq;
	u32			dummy_seq;

	char			name[IFNAMSIZ];

	int			num_frags;
	struct sk_buff		*frags[FRAG_HASH_SIZE];

	struct slcompress	*slhc;
#define BABYLON_MAX_FRAGS	16
	unsigned short		frag_lens[BABYLON_MAX_FRAGS];
};