include/net/rose.h

   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