/* *	Declarations of NET/ROM type objects. * *	Jonathan Naylor G4KLX	9/4/95 */ #ifndef _NETROM_H#define _NETROM_H  #include <linux/netrom.h>#include <linux/list.h>#include <net/sock.h> #define	NR_NETWORK_LEN			15#define	NR_TRANSPORT_LEN		5 #define	NR_PROTO_IP			0x0C #define	NR_PROTOEXT			0x00#define	NR_CONNREQ			0x01#define	NR_CONNACK			0x02#define	NR_DISCREQ			0x03#define	NR_DISCACK			0x04#define	NR_INFO				0x05#define	NR_INFOACK			0x06#define	NR_RESET			0x07 #define	NR_CHOKE_FLAG			0x80#define	NR_NAK_FLAG			0x40#define	NR_MORE_FLAG			0x20 /* Define Link State constants. */enum {	NR_STATE_0,	NR_STATE_1,	NR_STATE_2,	NR_STATE_3}; #define	NR_COND_ACK_PENDING		0x01#define	NR_COND_REJECT			0x02#define	NR_COND_PEER_RX_BUSY		0x04#define	NR_COND_OWN_RX_BUSY		0x08 #define NR_DEFAULT_T1			120000		/* Outstanding frames - 120 seconds */#define NR_DEFAULT_T2			5000		/* Response delay     - 5 seconds */#define NR_DEFAULT_N2			3		/* Number of Retries - 3 */#define	NR_DEFAULT_T4			180000		/* Busy Delay - 180 seconds */#define	NR_DEFAULT_IDLE			0		/* No Activity Timeout - none */#define	NR_DEFAULT_WINDOW		4		/* Default Window Size - 4 */#define	NR_DEFAULT_OBS			6		/* Default Obsolescence Count - 6 */#define	NR_DEFAULT_QUAL			10		/* Default Neighbour Quality - 10 */#define	NR_DEFAULT_TTL			16		/* Default Time To Live - 16 */#define	NR_DEFAULT_ROUTING		1		/* Is routing enabled ? */#define	NR_DEFAULT_FAILS		2		/* Link fails until route fails */#define	NR_DEFAULT_RESET		0		/* Sent / accept reset cmds? */ #define NR_MODULUS 			256#define NR_MAX_WINDOW_SIZE		127			/* Maximum Window Allowable - 127 */#define	NR_MAX_PACKET_SIZE		236			/* Maximum Packet Length - 236 */ struct nr_private {	struct net_device_stats	stats;}; struct nr_sock {	struct sock		sock;	ax25_address		user_addr, source_addr, dest_addr;	struct net_device		*device;	unsigned char		my_index,   my_id;	unsigned char		your_index, your_id;	unsigned char		state, condition, bpqext, window;	unsigned short		vs, vr, va, vl;	unsigned char		n2, n2count;	unsigned long		t1, t2, t4, idle;	unsigned short		fraglen;	struct timer_list	t1timer;	struct timer_list	t2timer;	struct timer_list	t4timer;	struct timer_list	idletimer;	struct sk_buff_head	ack_queue;	struct sk_buff_head	reseq_queue;	struct sk_buff_head	frag_queue;}; #define nr_sk(sk) ((struct nr_sock *)(sk)) struct nr_neigh {	struct hlist_node	neigh_node;	ax25_address		callsign;	ax25_digi		*digipeat;	ax25_cb			*ax25;	struct net_device	*dev;	unsigned char		quality;	unsigned char		locked;	unsigned short		count;	unsigned int		number;	unsigned char		failed;	atomic_t		refcount;}; struct nr_route {	unsigned char   quality;	unsigned char   obs_count;	struct nr_neigh *neighbour;}; struct nr_node {	struct hlist_node	node_node;	ax25_address		callsign;	char			mnemonic[7];	unsigned char		which;	unsigned char		count;	struct nr_route		routes[3];	atomic_t		refcount;	spinlock_t		node_lock;}; /********************************************************************* *	nr_node & nr_neigh lists, refcounting and locking *********************************************************************/ #define nr_node_hold(__nr_node) \	atomic_inc(&((__nr_node)->refcount)) static __inline__ void nr_node_put(struct nr_node *nr_node){	if (atomic_dec_and_test(&nr_node->refcount)) {		kfree(nr_node);	}} #define nr_neigh_hold(__nr_neigh) \	atomic_inc(&((__nr_neigh)->refcount)) static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh){	if (atomic_dec_and_test(&nr_neigh->refcount)) {		kfree(nr_neigh->digipeat);		kfree(nr_neigh);	}} /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter. */static __inline__ void nr_node_lock(struct nr_node *nr_node){	nr_node_hold(nr_node);	spin_lock_bh(&nr_node->node_lock);} static __inline__ void nr_node_unlock(struct nr_node *nr_node){	spin_unlock_bh(&nr_node->node_lock);	nr_node_put(nr_node);} #define nr_neigh_for_each(__nr_neigh, node, list) \	hlist_for_each_entry(__nr_neigh, node, list, neigh_node) #define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \	hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node) #define nr_node_for_each(__nr_node, node, list) \	hlist_for_each_entry(__nr_node, node, list, node_node) #define nr_node_for_each_safe(__nr_node, node, node2, list) \	hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node)  /*********************************************************************/ /* af_netrom.c */extern int  sysctl_netrom_default_path_quality;extern int  sysctl_netrom_obsolescence_count_initialiser;extern int  sysctl_netrom_network_ttl_initialiser;extern int  sysctl_netrom_transport_timeout;extern int  sysctl_netrom_transport_maximum_tries;extern int  sysctl_netrom_transport_acknowledge_delay;extern int  sysctl_netrom_transport_busy_delay;extern int  sysctl_netrom_transport_requested_window_size;extern int  sysctl_netrom_transport_no_activity_timeout;extern int  sysctl_netrom_routing_control;extern int  sysctl_netrom_link_fails_count;extern int  sysctl_netrom_reset_circuit; extern int  nr_rx_frame(struct sk_buff *, struct net_device *);extern void nr_destroy_socket(struct sock *); /* nr_dev.c */extern int  nr_rx_ip(struct sk_buff *, struct net_device *);extern void nr_setup(struct net_device *); /* nr_in.c */extern int  nr_process_rx_frame(struct sock *, struct sk_buff *); /* nr_loopback.c */extern void nr_loopback_init(void);extern void nr_loopback_clear(void);extern int  nr_loopback_queue(struct sk_buff *); /* nr_out.c */extern void nr_output(struct sock *, struct sk_buff *);extern void nr_send_nak_frame(struct sock *);extern void nr_kick(struct sock *);extern void nr_transmit_buffer(struct sock *, struct sk_buff *);extern void nr_establish_data_link(struct sock *);extern void nr_enquiry_response(struct sock *);extern void nr_check_iframes_acked(struct sock *, unsigned short); /* nr_route.c */extern void nr_rt_device_down(struct net_device *);extern struct net_device *nr_dev_first(void);extern struct net_device *nr_dev_get(ax25_address *);extern int  nr_rt_ioctl(unsigned int, void __user *);extern void nr_link_failed(ax25_cb *, int);extern int  nr_route_frame(struct sk_buff *, ax25_cb *);extern const struct file_operations nr_nodes_fops;extern const struct file_operations nr_neigh_fops;extern void nr_rt_free(void); /* nr_subr.c */extern void nr_clear_queues(struct sock *);extern void nr_frames_acked(struct sock *, unsigned short);extern void nr_requeue_frames(struct sock *);extern int  nr_validate_nr(struct sock *, unsigned short);extern int  nr_in_rx_window(struct sock *, unsigned short);extern void nr_write_internal(struct sock *, int); extern void __nr_transmit_reply(struct sk_buff *skb, int mine,	unsigned char cmdflags); /* * This routine is called when a Connect Acknowledge with the Choke Flag * set is needed to refuse a connection. */#define nr_transmit_refusal(skb, mine)					\do {									\	__nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG);	\} while (0) /* * This routine is called when we don't have a circuit matching an incoming * NET/ROM packet.  This is an G8PZT Xrouter extension. */#define nr_transmit_reset(skb, mine)					\do {									\	__nr_transmit_reply((skb), (mine), NR_RESET);			\} while (0) extern void nr_disconnect(struct sock *, int); /* nr_timer.c */extern void nr_init_timers(struct sock *sk);extern void nr_start_heartbeat(struct sock *);extern void nr_start_t1timer(struct sock *);extern void nr_start_t2timer(struct sock *);extern void nr_start_t4timer(struct sock *);extern void nr_start_idletimer(struct sock *);extern void nr_stop_heartbeat(struct sock *);extern void nr_stop_t1timer(struct sock *);extern void nr_stop_t2timer(struct sock *);extern void nr_stop_t4timer(struct sock *);extern void nr_stop_idletimer(struct sock *);extern int  nr_t1timer_running(struct sock *); /* sysctl_net_netrom.c */extern void nr_register_sysctl(void);extern void nr_unregister_sysctl(void); #endif