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