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rose.h
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1 /*
2  * Declarations of Rose type objects.
3  *
4  * Jonathan Naylor G4KLX 25/8/96
5  */
6 
7 #ifndef _ROSE_H
8 #define _ROSE_H
9 
10 #include <linux/rose.h>
11 #include <net/sock.h>
12 
13 #define ROSE_ADDR_LEN 5
14 
15 #define ROSE_MIN_LEN 3
16 
17 #define ROSE_CALL_REQ_ADDR_LEN_OFF 3
18 #define ROSE_CALL_REQ_ADDR_LEN_VAL 0xAA /* each address is 10 digits */
19 #define ROSE_CALL_REQ_DEST_ADDR_OFF 4
20 #define ROSE_CALL_REQ_SRC_ADDR_OFF 9
21 #define ROSE_CALL_REQ_FACILITIES_OFF 14
22 
23 #define ROSE_GFI 0x10
24 #define ROSE_Q_BIT 0x80
25 #define ROSE_D_BIT 0x40
26 #define ROSE_M_BIT 0x10
27 
28 #define ROSE_CALL_REQUEST 0x0B
29 #define ROSE_CALL_ACCEPTED 0x0F
30 #define ROSE_CLEAR_REQUEST 0x13
31 #define ROSE_CLEAR_CONFIRMATION 0x17
32 #define ROSE_DATA 0x00
33 #define ROSE_INTERRUPT 0x23
34 #define ROSE_INTERRUPT_CONFIRMATION 0x27
35 #define ROSE_RR 0x01
36 #define ROSE_RNR 0x05
37 #define ROSE_REJ 0x09
38 #define ROSE_RESET_REQUEST 0x1B
39 #define ROSE_RESET_CONFIRMATION 0x1F
40 #define ROSE_REGISTRATION_REQUEST 0xF3
41 #define ROSE_REGISTRATION_CONFIRMATION 0xF7
42 #define ROSE_RESTART_REQUEST 0xFB
43 #define ROSE_RESTART_CONFIRMATION 0xFF
44 #define ROSE_DIAGNOSTIC 0xF1
45 #define ROSE_ILLEGAL 0xFD
46 
47 /* Define Link State constants. */
48 
49 enum {
50  ROSE_STATE_0, /* Ready */
51  ROSE_STATE_1, /* Awaiting Call Accepted */
52  ROSE_STATE_2, /* Awaiting Clear Confirmation */
53  ROSE_STATE_3, /* Data Transfer */
54  ROSE_STATE_4, /* Awaiting Reset Confirmation */
55  ROSE_STATE_5 /* Deferred Call Acceptance */
56 };
57 
58 #define ROSE_DEFAULT_T0 180000 /* Default T10 T20 value */
59 #define ROSE_DEFAULT_T1 200000 /* Default T11 T21 value */
60 #define ROSE_DEFAULT_T2 180000 /* Default T12 T22 value */
61 #define ROSE_DEFAULT_T3 180000 /* Default T13 T23 value */
62 #define ROSE_DEFAULT_HB 5000 /* Default Holdback value */
63 #define ROSE_DEFAULT_IDLE 0 /* No Activity Timeout - none */
64 #define ROSE_DEFAULT_ROUTING 1 /* Default routing flag */
65 #define ROSE_DEFAULT_FAIL_TIMEOUT 120000 /* Time until link considered usable */
66 #define ROSE_DEFAULT_MAXVC 50 /* Maximum number of VCs per neighbour */
67 #define ROSE_DEFAULT_WINDOW_SIZE 7 /* Default window size */
68 
69 #define ROSE_MODULUS 8
70 #define ROSE_MAX_PACKET_SIZE 251 /* Maximum packet size */
71 
72 #define ROSE_COND_ACK_PENDING 0x01
73 #define ROSE_COND_PEER_RX_BUSY 0x02
74 #define ROSE_COND_OWN_RX_BUSY 0x04
75 
76 #define FAC_NATIONAL 0x00
77 #define FAC_CCITT 0x0F
78 
79 #define FAC_NATIONAL_RAND 0x7F
80 #define FAC_NATIONAL_FLAGS 0x3F
81 #define FAC_NATIONAL_DEST_DIGI 0xE9
82 #define FAC_NATIONAL_SRC_DIGI 0xEB
83 #define FAC_NATIONAL_FAIL_CALL 0xED
84 #define FAC_NATIONAL_FAIL_ADD 0xEE
85 #define FAC_NATIONAL_DIGIS 0xEF
86 
87 #define FAC_CCITT_DEST_NSAP 0xC9
88 #define FAC_CCITT_SRC_NSAP 0xCB
89 
90 struct rose_neigh {
91  struct rose_neigh *next;
92  ax25_address callsign;
93  ax25_digi *digipeat;
94  ax25_cb *ax25;
95  struct net_device *dev;
96  unsigned short count;
97  unsigned short use;
98  unsigned int number;
99  char restarted;
100  char dce_mode;
101  char loopback;
102  struct sk_buff_head queue;
103  struct timer_list t0timer;
104  struct timer_list ftimer;
105 };
106 
107 struct rose_node {
108  struct rose_node *next;
109  rose_address address;
110  unsigned short mask;
111  unsigned char count;
112  char loopback;
113  struct rose_neigh *neighbour[3];
114 };
115 
116 struct rose_route {
117  struct rose_route *next;
118  unsigned int lci1, lci2;
119  rose_address src_addr, dest_addr;
120  ax25_address src_call, dest_call;
121  struct rose_neigh *neigh1, *neigh2;
122  unsigned int rand;
123 };
124 
125 struct rose_sock {
126  struct sock sock;
127  rose_address source_addr, dest_addr;
128  ax25_address source_call, dest_call;
129  unsigned char source_ndigis, dest_ndigis;
130  ax25_address source_digis[ROSE_MAX_DIGIS];
131  ax25_address dest_digis[ROSE_MAX_DIGIS];
132  struct rose_neigh *neighbour;
133  struct net_device *device;
134  unsigned int lci, rand;
135  unsigned char state, condition, qbitincl, defer;
136  unsigned char cause, diagnostic;
137  unsigned short vs, vr, va, vl;
138  unsigned long t1, t2, t3, hb, idle;
139 #ifdef M_BIT
140  unsigned short fraglen;
141  struct sk_buff_head frag_queue;
142 #endif
143  struct sk_buff_head ack_queue;
144  struct rose_facilities_struct facilities;
145  struct timer_list timer;
146  struct timer_list idletimer;
147 };
148 
149 #define rose_sk(sk) ((struct rose_sock *)(sk))
150 
151 /* af_rose.c */
152 extern ax25_address rose_callsign;
153 extern int sysctl_rose_restart_request_timeout;
154 extern int sysctl_rose_call_request_timeout;
155 extern int sysctl_rose_reset_request_timeout;
156 extern int sysctl_rose_clear_request_timeout;
157 extern int sysctl_rose_no_activity_timeout;
158 extern int sysctl_rose_ack_hold_back_timeout;
159 extern int sysctl_rose_routing_control;
160 extern int sysctl_rose_link_fail_timeout;
161 extern int sysctl_rose_maximum_vcs;
162 extern int sysctl_rose_window_size;
163 extern int rosecmp(rose_address *, rose_address *);
164 extern int rosecmpm(rose_address *, rose_address *, unsigned short);
165 extern char *rose2asc(char *buf, const rose_address *);
166 extern struct sock *rose_find_socket(unsigned int, struct rose_neigh *);
167 extern void rose_kill_by_neigh(struct rose_neigh *);
168 extern unsigned int rose_new_lci(struct rose_neigh *);
169 extern int rose_rx_call_request(struct sk_buff *, struct net_device *, struct rose_neigh *, unsigned int);
170 extern void rose_destroy_socket(struct sock *);
171 
172 /* rose_dev.c */
173 extern void rose_setup(struct net_device *);
174 
175 /* rose_in.c */
176 extern int rose_process_rx_frame(struct sock *, struct sk_buff *);
177 
178 /* rose_link.c */
179 extern void rose_start_ftimer(struct rose_neigh *);
180 extern void rose_stop_ftimer(struct rose_neigh *);
181 extern void rose_stop_t0timer(struct rose_neigh *);
182 extern int rose_ftimer_running(struct rose_neigh *);
183 extern void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *, unsigned short);
184 extern void rose_transmit_clear_request(struct rose_neigh *, unsigned int, unsigned char, unsigned char);
185 extern void rose_transmit_link(struct sk_buff *, struct rose_neigh *);
186 
187 /* rose_loopback.c */
188 extern void rose_loopback_init(void);
189 extern void rose_loopback_clear(void);
190 extern int rose_loopback_queue(struct sk_buff *, struct rose_neigh *);
191 
192 /* rose_out.c */
193 extern void rose_kick(struct sock *);
194 extern void rose_enquiry_response(struct sock *);
195 
196 /* rose_route.c */
197 extern struct rose_neigh *rose_loopback_neigh;
198 extern const struct file_operations rose_neigh_fops;
199 extern const struct file_operations rose_nodes_fops;
200 extern const struct file_operations rose_routes_fops;
201 
202 extern void rose_add_loopback_neigh(void);
203 extern int __must_check rose_add_loopback_node(rose_address *);
204 extern void rose_del_loopback_node(rose_address *);
205 extern void rose_rt_device_down(struct net_device *);
206 extern void rose_link_device_down(struct net_device *);
207 extern struct net_device *rose_dev_first(void);
208 extern struct net_device *rose_dev_get(rose_address *);
209 extern struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *);
210 extern struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *, unsigned char *, int);
211 extern int rose_rt_ioctl(unsigned int, void __user *);
212 extern void rose_link_failed(ax25_cb *, int);
213 extern int rose_route_frame(struct sk_buff *, ax25_cb *);
214 extern void rose_rt_free(void);
215 
216 /* rose_subr.c */
217 extern void rose_clear_queues(struct sock *);
218 extern void rose_frames_acked(struct sock *, unsigned short);
219 extern void rose_requeue_frames(struct sock *);
220 extern int rose_validate_nr(struct sock *, unsigned short);
221 extern void rose_write_internal(struct sock *, int);
222 extern int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *);
223 extern int rose_parse_facilities(unsigned char *, unsigned int, struct rose_facilities_struct *);
224 extern void rose_disconnect(struct sock *, int, int, int);
225 
226 /* rose_timer.c */
227 extern void rose_start_heartbeat(struct sock *);
228 extern void rose_start_t1timer(struct sock *);
229 extern void rose_start_t2timer(struct sock *);
230 extern void rose_start_t3timer(struct sock *);
231 extern void rose_start_hbtimer(struct sock *);
232 extern void rose_start_idletimer(struct sock *);
233 extern void rose_stop_heartbeat(struct sock *);
234 extern void rose_stop_timer(struct sock *);
235 extern void rose_stop_idletimer(struct sock *);
236 
237 /* sysctl_net_rose.c */
238 extern void rose_register_sysctl(void);
239 extern void rose_unregister_sysctl(void);
240 
241 #endif
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