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Release 4.12 include/net/netrom.h

Directory: include/net
/*
 *      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 <linux/slab.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_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); } }

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#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)) { if (nr_neigh->ax25) ax25_cb_put(nr_neigh->ax25); kfree(nr_neigh->digipeat); kfree(nr_neigh); } }

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Jeroen Vreeken3673.47%150.00%
Jarek Poplawski1326.53%150.00%
Total49100.00%2100.00%

/* 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); }

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static __inline__ void nr_node_unlock(struct nr_node *nr_node) { spin_unlock_bh(&nr_node->node_lock); nr_node_put(nr_node); }

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#define nr_neigh_for_each(__nr_neigh, list) \ hlist_for_each_entry(__nr_neigh, list, neigh_node) #define nr_neigh_for_each_safe(__nr_neigh, node2, list) \ hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node) #define nr_node_for_each(__nr_node, list) \ hlist_for_each_entry(__nr_node, list, node_node) #define nr_node_for_each_safe(__nr_node, node2, list) \ hlist_for_each_entry_safe(__nr_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; int nr_rx_frame(struct sk_buff *, struct net_device *); void nr_destroy_socket(struct sock *); /* nr_dev.c */ int nr_rx_ip(struct sk_buff *, struct net_device *); void nr_setup(struct net_device *); /* nr_in.c */ int nr_process_rx_frame(struct sock *, struct sk_buff *); /* nr_loopback.c */ void nr_loopback_init(void); void nr_loopback_clear(void); int nr_loopback_queue(struct sk_buff *); /* nr_out.c */ void nr_output(struct sock *, struct sk_buff *); void nr_send_nak_frame(struct sock *); void nr_kick(struct sock *); void nr_transmit_buffer(struct sock *, struct sk_buff *); void nr_establish_data_link(struct sock *); void nr_enquiry_response(struct sock *); void nr_check_iframes_acked(struct sock *, unsigned short); /* nr_route.c */ void nr_rt_device_down(struct net_device *); struct net_device *nr_dev_first(void); struct net_device *nr_dev_get(ax25_address *); int nr_rt_ioctl(unsigned int, void __user *); void nr_link_failed(ax25_cb *, int); 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; void nr_rt_free(void); /* nr_subr.c */ void nr_clear_queues(struct sock *); void nr_frames_acked(struct sock *, unsigned short); void nr_requeue_frames(struct sock *); int nr_validate_nr(struct sock *, unsigned short); int nr_in_rx_window(struct sock *, unsigned short); void nr_write_internal(struct sock *, int); 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) void nr_disconnect(struct sock *, int); /* nr_timer.c */ void nr_init_timers(struct sock *sk); void nr_start_heartbeat(struct sock *); void nr_start_t1timer(struct sock *); void nr_start_t2timer(struct sock *); void nr_start_t4timer(struct sock *); void nr_start_idletimer(struct sock *); void nr_stop_heartbeat(struct sock *); void nr_stop_t1timer(struct sock *); void nr_stop_t2timer(struct sock *); void nr_stop_t4timer(struct sock *); void nr_stop_idletimer(struct sock *); int nr_t1timer_running(struct sock *); /* sysctl_net_netrom.c */ void nr_register_sysctl(void); void nr_unregister_sysctl(void); #endif

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Linus Torvalds (pre-git)77572.50%1653.33%
Jeroen Vreeken19017.77%13.33%
Ralf Bächle635.89%413.33%
Jarek Poplawski131.22%13.33%
Stephen Hemminger100.94%26.67%
David S. Miller80.75%26.67%
Sasha Levin40.37%13.33%
Tejun Heo30.28%13.33%
Arjan van de Ven20.19%13.33%
Al Viro10.09%13.33%
Total1069100.00%30100.00%
Directory: include/net
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