1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Declarations of Rose type objects. 4 * 5 * Jonathan Naylor G4KLX 25/8/96 6 */ 7 8 #ifndef _ROSE_H 9 #define _ROSE_H 10 11 #include <linux/rose.h> 12 #include <net/ax25.h> 13 #include <net/sock.h> 14 15 #define ROSE_ADDR_LEN 5 16 17 #define ROSE_MIN_LEN 3 18 19 #define ROSE_CALL_REQ_ADDR_LEN_OFF 3 20 #define ROSE_CALL_REQ_ADDR_LEN_VAL 0xAA /* each address is 10 digits */ 21 #define ROSE_CALL_REQ_DEST_ADDR_OFF 4 22 #define ROSE_CALL_REQ_SRC_ADDR_OFF 9 23 #define ROSE_CALL_REQ_FACILITIES_OFF 14 24 25 #define ROSE_GFI 0x10 26 #define ROSE_Q_BIT 0x80 27 #define ROSE_D_BIT 0x40 28 #define ROSE_M_BIT 0x10 29 30 #define ROSE_CALL_REQUEST 0x0B 31 #define ROSE_CALL_ACCEPTED 0x0F 32 #define ROSE_CLEAR_REQUEST 0x13 33 #define ROSE_CLEAR_CONFIRMATION 0x17 34 #define ROSE_DATA 0x00 35 #define ROSE_INTERRUPT 0x23 36 #define ROSE_INTERRUPT_CONFIRMATION 0x27 37 #define ROSE_RR 0x01 38 #define ROSE_RNR 0x05 39 #define ROSE_REJ 0x09 40 #define ROSE_RESET_REQUEST 0x1B 41 #define ROSE_RESET_CONFIRMATION 0x1F 42 #define ROSE_REGISTRATION_REQUEST 0xF3 43 #define ROSE_REGISTRATION_CONFIRMATION 0xF7 44 #define ROSE_RESTART_REQUEST 0xFB 45 #define ROSE_RESTART_CONFIRMATION 0xFF 46 #define ROSE_DIAGNOSTIC 0xF1 47 #define ROSE_ILLEGAL 0xFD 48 49 /* Define Link State constants. */ 50 51 enum { 52 ROSE_STATE_0, /* Ready */ 53 ROSE_STATE_1, /* Awaiting Call Accepted */ 54 ROSE_STATE_2, /* Awaiting Clear Confirmation */ 55 ROSE_STATE_3, /* Data Transfer */ 56 ROSE_STATE_4, /* Awaiting Reset Confirmation */ 57 ROSE_STATE_5 /* Deferred Call Acceptance */ 58 }; 59 60 #define ROSE_DEFAULT_T0 180000 /* Default T10 T20 value */ 61 #define ROSE_DEFAULT_T1 200000 /* Default T11 T21 value */ 62 #define ROSE_DEFAULT_T2 180000 /* Default T12 T22 value */ 63 #define ROSE_DEFAULT_T3 180000 /* Default T13 T23 value */ 64 #define ROSE_DEFAULT_HB 5000 /* Default Holdback value */ 65 #define ROSE_DEFAULT_IDLE 0 /* No Activity Timeout - none */ 66 #define ROSE_DEFAULT_ROUTING 1 /* Default routing flag */ 67 #define ROSE_DEFAULT_FAIL_TIMEOUT 120000 /* Time until link considered usable */ 68 #define ROSE_DEFAULT_MAXVC 50 /* Maximum number of VCs per neighbour */ 69 #define ROSE_DEFAULT_WINDOW_SIZE 7 /* Default window size */ 70 71 #define ROSE_MODULUS 8 72 #define ROSE_MAX_PACKET_SIZE 251 /* Maximum packet size */ 73 74 #define ROSE_COND_ACK_PENDING 0x01 75 #define ROSE_COND_PEER_RX_BUSY 0x02 76 #define ROSE_COND_OWN_RX_BUSY 0x04 77 78 #define FAC_NATIONAL 0x00 79 #define FAC_CCITT 0x0F 80 81 #define FAC_NATIONAL_RAND 0x7F 82 #define FAC_NATIONAL_FLAGS 0x3F 83 #define FAC_NATIONAL_DEST_DIGI 0xE9 84 #define FAC_NATIONAL_SRC_DIGI 0xEB 85 #define FAC_NATIONAL_FAIL_CALL 0xED 86 #define FAC_NATIONAL_FAIL_ADD 0xEE 87 #define FAC_NATIONAL_DIGIS 0xEF 88 89 #define FAC_CCITT_DEST_NSAP 0xC9 90 #define FAC_CCITT_SRC_NSAP 0xCB 91 92 struct rose_neigh { 93 struct rose_neigh *next; 94 ax25_address callsign; 95 ax25_digi *digipeat; 96 ax25_cb *ax25; 97 struct net_device *dev; 98 unsigned short count; 99 unsigned short use; 100 unsigned int number; 101 char restarted; 102 char dce_mode; 103 char loopback; 104 struct sk_buff_head queue; 105 struct timer_list t0timer; 106 struct timer_list ftimer; 107 }; 108 109 struct rose_node { 110 struct rose_node *next; 111 rose_address address; 112 unsigned short mask; 113 unsigned char count; 114 char loopback; 115 struct rose_neigh *neighbour[3]; 116 }; 117 118 struct rose_route { 119 struct rose_route *next; 120 unsigned int lci1, lci2; 121 rose_address src_addr, dest_addr; 122 ax25_address src_call, dest_call; 123 struct rose_neigh *neigh1, *neigh2; 124 unsigned int rand; 125 }; 126 127 struct rose_sock { 128 struct sock sock; 129 rose_address source_addr, dest_addr; 130 ax25_address source_call, dest_call; 131 unsigned char source_ndigis, dest_ndigis; 132 ax25_address source_digis[ROSE_MAX_DIGIS]; 133 ax25_address dest_digis[ROSE_MAX_DIGIS]; 134 struct rose_neigh *neighbour; 135 struct net_device *device; 136 unsigned int lci, rand; 137 unsigned char state, condition, qbitincl, defer; 138 unsigned char cause, diagnostic; 139 unsigned short vs, vr, va, vl; 140 unsigned long t1, t2, t3, hb, idle; 141 #ifdef M_BIT 142 unsigned short fraglen; 143 struct sk_buff_head frag_queue; 144 #endif 145 struct sk_buff_head ack_queue; 146 struct rose_facilities_struct facilities; 147 struct timer_list timer; 148 struct timer_list idletimer; 149 }; 150 151 #define rose_sk(sk) ((struct rose_sock *)(sk)) 152 153 /* af_rose.c */ 154 extern ax25_address rose_callsign; 155 extern int sysctl_rose_restart_request_timeout; 156 extern int sysctl_rose_call_request_timeout; 157 extern int sysctl_rose_reset_request_timeout; 158 extern int sysctl_rose_clear_request_timeout; 159 extern int sysctl_rose_no_activity_timeout; 160 extern int sysctl_rose_ack_hold_back_timeout; 161 extern int sysctl_rose_routing_control; 162 extern int sysctl_rose_link_fail_timeout; 163 extern int sysctl_rose_maximum_vcs; 164 extern int sysctl_rose_window_size; 165 166 int rosecmp(const rose_address *, const rose_address *); 167 int rosecmpm(const rose_address *, const rose_address *, unsigned short); 168 char *rose2asc(char *buf, const rose_address *); 169 struct sock *rose_find_socket(unsigned int, struct rose_neigh *); 170 void rose_kill_by_neigh(struct rose_neigh *); 171 unsigned int rose_new_lci(struct rose_neigh *); 172 int rose_rx_call_request(struct sk_buff *, struct net_device *, 173 struct rose_neigh *, unsigned int); 174 void rose_destroy_socket(struct sock *); 175 176 /* rose_dev.c */ 177 void rose_setup(struct net_device *); 178 179 /* rose_in.c */ 180 int rose_process_rx_frame(struct sock *, struct sk_buff *); 181 182 /* rose_link.c */ 183 void rose_start_ftimer(struct rose_neigh *); 184 void rose_stop_ftimer(struct rose_neigh *); 185 void rose_stop_t0timer(struct rose_neigh *); 186 int rose_ftimer_running(struct rose_neigh *); 187 void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *, 188 unsigned short); 189 void rose_transmit_clear_request(struct rose_neigh *, unsigned int, 190 unsigned char, unsigned char); 191 void rose_transmit_link(struct sk_buff *, struct rose_neigh *); 192 193 /* rose_loopback.c */ 194 void rose_loopback_init(void); 195 void rose_loopback_clear(void); 196 int rose_loopback_queue(struct sk_buff *, struct rose_neigh *); 197 198 /* rose_out.c */ 199 void rose_kick(struct sock *); 200 void rose_enquiry_response(struct sock *); 201 202 /* rose_route.c */ 203 extern struct rose_neigh *rose_loopback_neigh; 204 extern const struct seq_operations rose_neigh_seqops; 205 extern const struct seq_operations rose_node_seqops; 206 extern struct seq_operations rose_route_seqops; 207 208 void rose_add_loopback_neigh(void); 209 int __must_check rose_add_loopback_node(const rose_address *); 210 void rose_del_loopback_node(const rose_address *); 211 void rose_rt_device_down(struct net_device *); 212 void rose_link_device_down(struct net_device *); 213 struct net_device *rose_dev_first(void); 214 struct net_device *rose_dev_get(rose_address *); 215 struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *); 216 struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *, 217 unsigned char *, int); 218 int rose_rt_ioctl(unsigned int, void __user *); 219 void rose_link_failed(ax25_cb *, int); 220 int rose_route_frame(struct sk_buff *, ax25_cb *); 221 void rose_rt_free(void); 222 223 /* rose_subr.c */ 224 void rose_clear_queues(struct sock *); 225 void rose_frames_acked(struct sock *, unsigned short); 226 void rose_requeue_frames(struct sock *); 227 int rose_validate_nr(struct sock *, unsigned short); 228 void rose_write_internal(struct sock *, int); 229 int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *); 230 int rose_parse_facilities(unsigned char *, unsigned int, 231 struct rose_facilities_struct *); 232 void rose_disconnect(struct sock *, int, int, int); 233 234 /* rose_timer.c */ 235 void rose_start_heartbeat(struct sock *); 236 void rose_start_t1timer(struct sock *); 237 void rose_start_t2timer(struct sock *); 238 void rose_start_t3timer(struct sock *); 239 void rose_start_hbtimer(struct sock *); 240 void rose_start_idletimer(struct sock *); 241 void rose_stop_heartbeat(struct sock *); 242 void rose_stop_timer(struct sock *); 243 void rose_stop_idletimer(struct sock *); 244 245 /* sysctl_net_rose.c */ 246 void rose_register_sysctl(void); 247 void rose_unregister_sysctl(void); 248 249 #endif 250