2 * Declarations of NET/ROM type objects.
4 * Jonathan Naylor G4KLX 9/4/95
9 #include <linux/netrom.h>
10 #include <linux/list.h>
13 #define NR_NETWORK_LEN 15
14 #define NR_TRANSPORT_LEN 5
16 #define NR_PROTO_IP 0x0C
18 #define NR_PROTOEXT 0x00
19 #define NR_CONNREQ 0x01
20 #define NR_CONNACK 0x02
21 #define NR_DISCREQ 0x03
22 #define NR_DISCACK 0x04
24 #define NR_INFOACK 0x06
26 #define NR_CHOKE_FLAG 0x80
27 #define NR_NAK_FLAG 0x40
28 #define NR_MORE_FLAG 0x20
30 /* Define Link State constants. */
38 #define NR_COND_ACK_PENDING 0x01
39 #define NR_COND_REJECT 0x02
40 #define NR_COND_PEER_RX_BUSY 0x04
41 #define NR_COND_OWN_RX_BUSY 0x08
43 #define NR_DEFAULT_T1 (120 * HZ) /* Outstanding frames - 120 seconds */
44 #define NR_DEFAULT_T2 (5 * HZ) /* Response delay - 5 seconds */
45 #define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
46 #define NR_DEFAULT_T4 (180 * HZ) /* Busy Delay - 180 seconds */
47 #define NR_DEFAULT_IDLE (0 * 60 * HZ) /* No Activity Timeout - none */
48 #define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
49 #define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
50 #define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
51 #define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
52 #define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
53 #define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
55 #define NR_MODULUS 256
56 #define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
57 #define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
61 ax25_address user_addr, source_addr, dest_addr;
62 struct net_device *device;
63 unsigned char my_index, my_id;
64 unsigned char your_index, your_id;
65 unsigned char state, condition, bpqext, window;
66 unsigned short vs, vr, va, vl;
67 unsigned char n2, n2count;
68 unsigned long t1, t2, t4, idle;
69 unsigned short fraglen;
70 struct timer_list t1timer;
71 struct timer_list t2timer;
72 struct timer_list t4timer;
73 struct timer_list idletimer;
74 struct sk_buff_head ack_queue;
75 struct sk_buff_head reseq_queue;
76 struct sk_buff_head frag_queue;
79 #define nr_sk(sk) ((struct nr_sock *)(sk))
82 struct hlist_node neigh_node;
83 ax25_address callsign;
86 struct net_device *dev;
87 unsigned char quality;
96 unsigned char quality;
97 unsigned char obs_count;
98 struct nr_neigh *neighbour;
102 struct hlist_node node_node;
103 ax25_address callsign;
107 struct nr_route routes[3];
109 spinlock_t node_lock;
112 /*********************************************************************
113 * nr_node & nr_neigh lists, refcounting and locking
114 *********************************************************************/
116 #define nr_node_hold(__nr_node) \
117 atomic_inc(&((__nr_node)->refcount))
119 static __inline__ void nr_node_put(struct nr_node *nr_node)
121 if (atomic_dec_and_test(&nr_node->refcount)) {
126 #define nr_neigh_hold(__nr_neigh) \
127 atomic_inc(&((__nr_neigh)->refcount))
129 static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
131 if (atomic_dec_and_test(&nr_neigh->refcount)) {
132 if (nr_neigh->digipeat != NULL)
133 kfree(nr_neigh->digipeat);
138 /* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
140 static __inline__ void nr_node_lock(struct nr_node *nr_node)
142 nr_node_hold(nr_node);
143 spin_lock_bh(&nr_node->node_lock);
146 static __inline__ void nr_node_unlock(struct nr_node *nr_node)
148 spin_unlock_bh(&nr_node->node_lock);
149 nr_node_put(nr_node);
152 #define nr_neigh_for_each(__nr_neigh, node, list) \
153 hlist_for_each_entry(__nr_neigh, node, list, neigh_node)
155 #define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \
156 hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node)
158 #define nr_node_for_each(__nr_node, node, list) \
159 hlist_for_each_entry(__nr_node, node, list, node_node)
161 #define nr_node_for_each_safe(__nr_node, node, node2, list) \
162 hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node)
165 /*********************************************************************/
168 extern int sysctl_netrom_default_path_quality;
169 extern int sysctl_netrom_obsolescence_count_initialiser;
170 extern int sysctl_netrom_network_ttl_initialiser;
171 extern int sysctl_netrom_transport_timeout;
172 extern int sysctl_netrom_transport_maximum_tries;
173 extern int sysctl_netrom_transport_acknowledge_delay;
174 extern int sysctl_netrom_transport_busy_delay;
175 extern int sysctl_netrom_transport_requested_window_size;
176 extern int sysctl_netrom_transport_no_activity_timeout;
177 extern int sysctl_netrom_routing_control;
178 extern int sysctl_netrom_link_fails_count;
179 extern int nr_rx_frame(struct sk_buff *, struct net_device *);
180 extern void nr_destroy_socket(struct sock *);
183 extern int nr_rx_ip(struct sk_buff *, struct net_device *);
184 extern void nr_setup(struct net_device *);
187 extern int nr_process_rx_frame(struct sock *, struct sk_buff *);
190 extern void nr_loopback_init(void);
191 extern void nr_loopback_clear(void);
192 extern int nr_loopback_queue(struct sk_buff *);
195 extern void nr_output(struct sock *, struct sk_buff *);
196 extern void nr_send_nak_frame(struct sock *);
197 extern void nr_kick(struct sock *);
198 extern void nr_transmit_buffer(struct sock *, struct sk_buff *);
199 extern void nr_establish_data_link(struct sock *);
200 extern void nr_enquiry_response(struct sock *);
201 extern void nr_check_iframes_acked(struct sock *, unsigned short);
204 extern void nr_rt_device_down(struct net_device *);
205 extern struct net_device *nr_dev_first(void);
206 extern struct net_device *nr_dev_get(ax25_address *);
207 extern int nr_rt_ioctl(unsigned int, void __user *);
208 extern void nr_link_failed(ax25_cb *, int);
209 extern int nr_route_frame(struct sk_buff *, ax25_cb *);
210 extern struct file_operations nr_nodes_fops;
211 extern struct file_operations nr_neigh_fops;
212 extern void nr_rt_free(void);
215 extern void nr_clear_queues(struct sock *);
216 extern void nr_frames_acked(struct sock *, unsigned short);
217 extern void nr_requeue_frames(struct sock *);
218 extern int nr_validate_nr(struct sock *, unsigned short);
219 extern int nr_in_rx_window(struct sock *, unsigned short);
220 extern void nr_write_internal(struct sock *, int);
221 extern void nr_transmit_refusal(struct sk_buff *, int);
222 extern void nr_disconnect(struct sock *, int);
225 extern void nr_init_timers(struct sock *sk);
226 extern void nr_start_heartbeat(struct sock *);
227 extern void nr_start_t1timer(struct sock *);
228 extern void nr_start_t2timer(struct sock *);
229 extern void nr_start_t4timer(struct sock *);
230 extern void nr_start_idletimer(struct sock *);
231 extern void nr_stop_heartbeat(struct sock *);
232 extern void nr_stop_t1timer(struct sock *);
233 extern void nr_stop_t2timer(struct sock *);
234 extern void nr_stop_t4timer(struct sock *);
235 extern void nr_stop_idletimer(struct sock *);
236 extern int nr_t1timer_running(struct sock *);
238 /* sysctl_net_netrom.c */
239 extern void nr_register_sysctl(void);
240 extern void nr_unregister_sysctl(void);