include/net/rose.h

   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
 164 int rosecmp(rose_address *, rose_address *);
 165 int rosecmpm(rose_address *, rose_address *, unsigned short);
 166 char *rose2asc(char *buf, const rose_address *);
 167 struct sock *rose_find_socket(unsigned int, struct rose_neigh *);
 168 void rose_kill_by_neigh(struct rose_neigh *);
 169 unsigned int rose_new_lci(struct rose_neigh *);
 170 int rose_rx_call_request(struct sk_buff *, struct net_device *,
 171                          struct rose_neigh *, unsigned int);
 172 void rose_destroy_socket(struct sock *);
 173
 174 /* rose_dev.c */
 175 void rose_setup(struct net_device *);
 176
 177 /* rose_in.c */
 178 int rose_process_rx_frame(struct sock *, struct sk_buff *);
 179
 180 /* rose_link.c */
 181 void rose_start_ftimer(struct rose_neigh *);
 182 void rose_stop_ftimer(struct rose_neigh *);
 183 void rose_stop_t0timer(struct rose_neigh *);
 184 int rose_ftimer_running(struct rose_neigh *);
 185 void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *,
 186                           unsigned short);
 187 void rose_transmit_clear_request(struct rose_neigh *, unsigned int,
 188                                  unsigned char, unsigned char);
 189 void rose_transmit_link(struct sk_buff *, struct rose_neigh *);
 190
 191 /* rose_loopback.c */
 192 void rose_loopback_init(void);
 193 void rose_loopback_clear(void);
 194 int rose_loopback_queue(struct sk_buff *, struct rose_neigh *);
 195
 196 /* rose_out.c */
 197 void rose_kick(struct sock *);
 198 void rose_enquiry_response(struct sock *);
 199
 200 /* rose_route.c */
 201 extern struct rose_neigh *rose_loopback_neigh;
 202 extern const struct file_operations rose_neigh_fops;
 203 extern const struct file_operations rose_nodes_fops;
 204 extern const struct file_operations rose_routes_fops;
 205
 206 void rose_add_loopback_neigh(void);
 207 int __must_check rose_add_loopback_node(rose_address *);
 208 void rose_del_loopback_node(rose_address *);
 209 void rose_rt_device_down(struct net_device *);
 210 void rose_link_device_down(struct net_device *);
 211 struct net_device *rose_dev_first(void);
 212 struct net_device *rose_dev_get(rose_address *);
 213 struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *);
 214 struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *,
 215                                   unsigned char *, int);
 216 int rose_rt_ioctl(unsigned int, void __user *);
 217 void rose_link_failed(ax25_cb *, int);
 218 int rose_route_frame(struct sk_buff *, ax25_cb *);
 219 void rose_rt_free(void);
 220
 221 /* rose_subr.c */
 222 void rose_clear_queues(struct sock *);
 223 void rose_frames_acked(struct sock *, unsigned short);
 224 void rose_requeue_frames(struct sock *);
 225 int rose_validate_nr(struct sock *, unsigned short);
 226 void rose_write_internal(struct sock *, int);
 227 int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *);
 228 int rose_parse_facilities(unsigned char *, unsigned int,
 229                           struct rose_facilities_struct *);
 230 void rose_disconnect(struct sock *, int, int, int);
 231
 232 /* rose_timer.c */
 233 void rose_start_heartbeat(struct sock *);
 234 void rose_start_t1timer(struct sock *);
 235 void rose_start_t2timer(struct sock *);
 236 void rose_start_t3timer(struct sock *);
 237 void rose_start_hbtimer(struct sock *);
 238 void rose_start_idletimer(struct sock *);
 239 void rose_stop_heartbeat(struct sock *);
 240 void rose_stop_timer(struct sock *);
 241 void rose_stop_idletimer(struct sock *);
 242
 243 /* sysctl_net_rose.c */
 244 void rose_register_sysctl(void);
 245 void rose_unregister_sysctl(void);
 246
 247 #endif