2 * Declarations of NET/ROM type objects.
4 * Jonathan Naylor G4KLX 9/4/95
10 #include <linux/netrom.h>
11 #include <linux/list.h>
14 #define NR_NETWORK_LEN 15
15 #define NR_TRANSPORT_LEN 5
17 #define NR_PROTO_IP 0x0C
19 #define NR_PROTOEXT 0x00
20 #define NR_CONNREQ 0x01
21 #define NR_CONNACK 0x02
22 #define NR_DISCREQ 0x03
23 #define NR_DISCACK 0x04
25 #define NR_INFOACK 0x06
28 #define NR_CHOKE_FLAG 0x80
29 #define NR_NAK_FLAG 0x40
30 #define NR_MORE_FLAG 0x20
32 /* Define Link State constants. */
40 #define NR_COND_ACK_PENDING 0x01
41 #define NR_COND_REJECT 0x02
42 #define NR_COND_PEER_RX_BUSY 0x04
43 #define NR_COND_OWN_RX_BUSY 0x08
45 #define NR_DEFAULT_T1 (120 * HZ) /* Outstanding frames - 120 seconds */
46 #define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */
47 #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
48 #define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */
49 #define NR_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */
50 #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
51 #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
52 #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
53 #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
54 #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
55 #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
56 #define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
58 #define NR_MODULUS 256
59 #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
60 #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
63 struct net_device_stats stats;
68 ax25_address user_addr, source_addr, dest_addr;
69 struct net_device *device;
70 unsigned char my_index, my_id;
71 unsigned char your_index, your_id;
72 unsigned char state, condition, bpqext, window;
73 unsigned short vs, vr, va, vl;
74 unsigned char n2, n2count;
75 unsigned long t1, t2, t4, idle;
76 unsigned short fraglen;
77 struct timer_list t1timer;
78 struct timer_list t2timer;
79 struct timer_list t4timer;
80 struct timer_list idletimer;
81 struct sk_buff_head ack_queue;
82 struct sk_buff_head reseq_queue;
83 struct sk_buff_head frag_queue;
86 #define nr_sk(sk) ((struct nr_sock *)(sk))
89 struct hlist_node neigh_node;
90 ax25_address callsign;
93 struct net_device *dev;
94 unsigned char quality;
103 unsigned char quality;
104 unsigned char obs_count;
105 struct nr_neigh *neighbour;
109 struct hlist_node node_node;
110 ax25_address callsign;
114 struct nr_route routes[3];
116 spinlock_t node_lock;
119 /*********************************************************************
120 * nr_node & nr_neigh lists, refcounting and locking
121 *********************************************************************/
123 #define nr_node_hold(__nr_node) \
124 atomic_inc(&((__nr_node)->refcount))
126 static __inline__ void nr_node_put(struct nr_node *nr_node)
128 if (atomic_dec_and_test(&nr_node->refcount)) {
133 #define nr_neigh_hold(__nr_neigh) \
134 atomic_inc(&((__nr_neigh)->refcount))
136 static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
138 if (atomic_dec_and_test(&nr_neigh->refcount)) {
139 kfree(nr_neigh->digipeat);
144 /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
146 static __inline__ void nr_node_lock(struct nr_node *nr_node)
148 nr_node_hold(nr_node);
149 spin_lock_bh(&nr_node->node_lock);
152 static __inline__ void nr_node_unlock(struct nr_node *nr_node)
154 spin_unlock_bh(&nr_node->node_lock);
155 nr_node_put(nr_node);
158 #define nr_neigh_for_each(__nr_neigh, node, list) \
159 hlist_for_each_entry(__nr_neigh, node, list, neigh_node)
161 #define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \
162 hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node)
164 #define nr_node_for_each(__nr_node, node, list) \
165 hlist_for_each_entry(__nr_node, node, list, node_node)
167 #define nr_node_for_each_safe(__nr_node, node, node2, list) \
168 hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node)
171 /*********************************************************************/
174 extern int sysctl_netrom_default_path_quality;
175 extern int sysctl_netrom_obsolescence_count_initialiser;
176 extern int sysctl_netrom_network_ttl_initialiser;
177 extern int sysctl_netrom_transport_timeout;
178 extern int sysctl_netrom_transport_maximum_tries;
179 extern int sysctl_netrom_transport_acknowledge_delay;
180 extern int sysctl_netrom_transport_busy_delay;
181 extern int sysctl_netrom_transport_requested_window_size;
182 extern int sysctl_netrom_transport_no_activity_timeout;
183 extern int sysctl_netrom_routing_control;
184 extern int sysctl_netrom_link_fails_count;
185 extern int sysctl_netrom_reset_circuit;
187 extern int nr_rx_frame(struct sk_buff *, struct net_device *);
188 extern void nr_destroy_socket(struct sock *);
191 extern int nr_rx_ip(struct sk_buff *, struct net_device *);
192 extern void nr_setup(struct net_device *);
195 extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
198 extern void nr_loopback_init(void);
199 extern void nr_loopback_clear(void);
200 extern int nr_loopback_queue(struct sk_buff *);
203 extern void nr_output(struct sock *, struct sk_buff *);
204 extern void nr_send_nak_frame(struct sock *);
205 extern void nr_kick(struct sock *);
206 extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
207 extern void nr_establish_data_link(struct sock *);
208 extern void nr_enquiry_response(struct sock *);
209 extern void nr_check_iframes_acked(struct sock *, unsigned short);
212 extern void nr_rt_device_down(struct net_device *);
213 extern struct net_device *nr_dev_first(void);
214 extern struct net_device *nr_dev_get(ax25_address *);
215 extern int nr_rt_ioctl(unsigned int, void __user *);
216 extern void nr_link_failed(ax25_cb *, int);
217 extern int nr_route_frame(struct sk_buff *, ax25_cb *);
218 extern struct file_operations nr_nodes_fops;
219 extern struct file_operations nr_neigh_fops;
220 extern void nr_rt_free(void);
223 extern void nr_clear_queues(struct sock *);
224 extern void nr_frames_acked(struct sock *, unsigned short);
225 extern void nr_requeue_frames(struct sock *);
226 extern int nr_validate_nr(struct sock *, unsigned short);
227 extern int nr_in_rx_window(struct sock *, unsigned short);
228 extern void nr_write_internal(struct sock *, int);
230 extern void __nr_transmit_reply(struct sk_buff *skb, int mine,
231 unsigned char cmdflags);
234 * This routine is called when a Connect Acknowledge with the Choke Flag
235 * set is needed to refuse a connection.
237 #define nr_transmit_refusal(skb, mine) \
239 __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
243 * This routine is called when we don't have a circuit matching an incoming
244 * NET/ROM packet. This is an G8PZT Xrouter extension.
246 #define nr_transmit_reset(skb, mine) \
248 __nr_transmit_reply((skb), (mine), NR_RESET); \
251 extern void nr_disconnect(struct sock *, int);
254 extern void nr_init_timers(struct sock *sk);
255 extern void nr_start_heartbeat(struct sock *);
256 extern void nr_start_t1timer(struct sock *);
257 extern void nr_start_t2timer(struct sock *);
258 extern void nr_start_t4timer(struct sock *);
259 extern void nr_start_idletimer(struct sock *);
260 extern void nr_stop_heartbeat(struct sock *);
261 extern void nr_stop_t1timer(struct sock *);
262 extern void nr_stop_t2timer(struct sock *);
263 extern void nr_stop_t4timer(struct sock *);
264 extern void nr_stop_idletimer(struct sock *);
265 extern int nr_t1timer_running(struct sock *);
267 /* sysctl_net_netrom.c */
268 extern void nr_register_sysctl(void);
269 extern void nr_unregister_sysctl(void);