| 1 | /* @(#)if_ddn.c 7.2 (Berkeley) %G% */ |
| 2 | |
| 3 | |
| 4 | /************************************************************************\ |
| 5 | |
| 6 | ________________________________________________________ |
| 7 | / \ |
| 8 | | AAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | |
| 9 | | AAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | |
| 10 | | AAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | |
| 11 | | AAAA AAAA CCCC CCCC | |
| 12 | | AAAA AAAA CCCC CCCC | |
| 13 | | AAAA AAAA CCCC CCCC | |
| 14 | | AAAA AAAA CCCC CCCC | |
| 15 | | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | |
| 16 | | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | |
| 17 | | AAAA AAAAAAAAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | |
| 18 | \________________________________________________________/ |
| 19 | |
| 20 | Copyright (c) 1985 by Advanced Computer Communications |
| 21 | 720 Santa Barbara Street, Santa Barbara, California 93101 |
| 22 | (805) 963-9431 |
| 23 | |
| 24 | This software may be duplicated and used on systems |
| 25 | which are licensed to run U.C. Berkeley versions of |
| 26 | the UNIX operating system. Any duplication of any |
| 27 | part of this software must include a copy of ACC's |
| 28 | copyright notice. |
| 29 | |
| 30 | |
| 31 | File: |
| 32 | if_ddn.c |
| 33 | |
| 34 | Author: |
| 35 | Art Berggreen |
| 36 | |
| 37 | Project: |
| 38 | 4.2 DDN X.25 network driver |
| 39 | |
| 40 | Function: |
| 41 | This is a network device driver for BSD 4.2 UNIX which |
| 42 | provides an interface between IP and ACC's ACP625 |
| 43 | (IF-11/X25) for connecting to the Defense Data Network. |
| 44 | |
| 45 | Components: |
| 46 | |
| 47 | Revision History: |
| 48 | 16-May-1985: V1.0 - First release. |
| 49 | Art Berggreen. |
| 50 | |
| 51 | \************************************************************************/ |
| 52 | \f |
| 53 | |
| 54 | /* if_ddn.c V1.0 5/16/85 */ |
| 55 | |
| 56 | /* |
| 57 | * ACC ACP625 DDN/X.25 Network device driver |
| 58 | */ |
| 59 | |
| 60 | /* #define DDNDEBUG 1 /* Enable definition for Debug code */ |
| 61 | |
| 62 | #include "ddn.h" |
| 63 | #if NDDN > 0 |
| 64 | #include "../machine/pte.h" |
| 65 | |
| 66 | #include "param.h" |
| 67 | #include "systm.h" |
| 68 | #include "mbuf.h" |
| 69 | #include "buf.h" |
| 70 | #include "protosw.h" |
| 71 | #include "socket.h" |
| 72 | #include "vmmac.h" |
| 73 | #include "errno.h" |
| 74 | #include "time.h" |
| 75 | #include "kernel.h" |
| 76 | #include "ioctl.h" |
| 77 | |
| 78 | #include "../net/if.h" |
| 79 | #include "../net/netisr.h" |
| 80 | #include "../net/route.h" |
| 81 | |
| 82 | #ifdef INET |
| 83 | #include "../netinet/in.h" |
| 84 | #include "../netinet/in_systm.h" |
| 85 | #include "../netinet/in_var.h" |
| 86 | #include "../netinet/ip.h" |
| 87 | #endif |
| 88 | |
| 89 | #include "../vax/cpu.h" |
| 90 | #include "../vax/mtpr.h" |
| 91 | #include "if_ddnreg.h" |
| 92 | #include "if_ddnvar.h" |
| 93 | #include "if_uba.h" |
| 94 | #include "../vaxuba/ubareg.h" |
| 95 | #include "../vaxuba/ubavar.h" |
| 96 | |
| 97 | \f |
| 98 | |
| 99 | /* declare global functions */ |
| 100 | |
| 101 | int ddnprobe(); |
| 102 | int ddnattach(); |
| 103 | int ddnreset(); |
| 104 | int ddninit(); |
| 105 | int ddnoutput(); |
| 106 | int ddntimer(); |
| 107 | int ddnioctl(); |
| 108 | int ddnintr(); |
| 109 | |
| 110 | /* declare local functions */ |
| 111 | |
| 112 | static void x25_init(); |
| 113 | static struct ddn_cb *locate_x25_lcn(); |
| 114 | static boolean convert_ip_addr(); |
| 115 | static int convert_x25_addr(); |
| 116 | static boolean make_x25_call(); |
| 117 | static void ddn_start(); |
| 118 | static void ddn_iorq(); |
| 119 | static void start_chn(); |
| 120 | static void ddn_data(); |
| 121 | static void ddn_supr(); |
| 122 | static void supr_msg(); |
| 123 | static boolean decode_ring(); |
| 124 | static void clear_lcn(); |
| 125 | static void send_restart(); |
| 126 | static void send_supr(); |
| 127 | #ifdef DDNDEBUG |
| 128 | static void prt_addr(); |
| 129 | static void prt_bytes(); |
| 130 | #endif DDNDEBUG |
| 131 | \f |
| 132 | |
| 133 | struct uba_device *ddninfo[NDDN]; /* ptrs to device info */ |
| 134 | u_short ddnstd[] = { 0766740, 0 }; /* standard addresses */ |
| 135 | struct uba_driver ddndriver = /* device driver info */ |
| 136 | { |
| 137 | ddnprobe, /* device probe routine */ |
| 138 | 0, /* slave probe routine */ |
| 139 | ddnattach, /* device attach routine */ |
| 140 | 0, /* "dmago" routine */ |
| 141 | ddnstd, /* device address */ |
| 142 | "ddn", /* device name */ |
| 143 | ddninfo /* ptr to device info ptrs */ |
| 144 | }; |
| 145 | |
| 146 | static u_char init_msg[] = |
| 147 | { |
| 148 | LINE_CNTL, /* set command code */ |
| 149 | 0x00, /* not used */ |
| 150 | 0x00, /* not used */ |
| 151 | 0x00, /* extension length (set at runtime) */ |
| 152 | LINK_DISABLE, /* link disable */ |
| 153 | /* LINK_LOOPBACK, /* loopback mode */ |
| 154 | /* LOOP_INTERNAL, /* = internal loopback */ |
| 155 | PKT_SIZE, /* packet size */ |
| 156 | 0x80, /* 128 - LSB */ |
| 157 | 0x00, /* 128 - MSB */ |
| 158 | PKT_WINDOW, /* packet window */ |
| 159 | 0x02, /* = 2 */ |
| 160 | LINK_ENABLE /* link enable */ |
| 161 | }; |
| 162 | |
| 163 | u_char cb_cmnd[4] = |
| 164 | { |
| 165 | CALL, |
| 166 | 0, |
| 167 | 0, |
| 168 | 0 |
| 169 | }; |
| 170 | |
| 171 | u_char cb_called_addr[16] = {0}; |
| 172 | |
| 173 | u_char cb_calling_addr[16] = {0}; |
| 174 | |
| 175 | u_char cb_facilities[64] = {0}; |
| 176 | |
| 177 | u_char cb_protocol[5] = {0}; |
| 178 | |
| 179 | u_char cb_user_data[1] = {0}; |
| 180 | |
| 181 | #ifdef DDNDEBUG |
| 182 | int ddn_debug = 1; /* values 0-8 cause increasing verbosity */ |
| 183 | #endif DDNDEBUG |
| 184 | \f |
| 185 | |
| 186 | /***********************************************************************\ |
| 187 | * * |
| 188 | * Information for each device unit is maintained in an array * |
| 189 | * of structures named ddn_softc[]. The array is indexed by * |
| 190 | * unit number. Each entry includes the network interface * |
| 191 | * structure (ddn_if) used by the routing code to locate the * |
| 192 | * interface, an array of Logical Channel control blocks which * |
| 193 | * maintain information about each of the Logical Channels (LCNs) * |
| 194 | * through which X.25 virtual calls are established, a queue of * |
| 195 | * I/O requests pending for the UMC, the UNIBUS interrupt vector * |
| 196 | * for the unit and misc flags. The Logical Channel Control * |
| 197 | * blocks maintain information about the state of each LCN, * |
| 198 | * a queue of outbound data, Half Duplex Channel (HDX) blocks * |
| 199 | * used for queuing I/O requests to the UMC and an ifuba * |
| 200 | * structure which records the UNIBUS resources being held by * |
| 201 | * the LCN. * |
| 202 | * * |
| 203 | \***********************************************************************/ |
| 204 | |
| 205 | struct sioq /* Start I/O queue head */ |
| 206 | { |
| 207 | struct hdx_chan *sq_head; /* queue head */ |
| 208 | struct hdx_chan *sq_tail; /* queue tail */ |
| 209 | }; |
| 210 | |
| 211 | struct hdx_chan /* HDX channel block */ |
| 212 | { |
| 213 | struct hdx_chan *hc_next; /* link to next HDX channel */ |
| 214 | u_char hc_chan; /* HDX channel number */ |
| 215 | u_char hc_adx; /* address bits 17-16 */ |
| 216 | u_short hc_addr; /* address bits 15-00 */ |
| 217 | u_short hc_cnt; /* byte count */ |
| 218 | u_char hc_func; /* I/O function */ |
| 219 | u_char hc_sbfc; /* I/O subfunction */ |
| 220 | }; |
| 221 | |
| 222 | struct ddn_cb /* Logical Channel control block */ |
| 223 | { |
| 224 | struct in_addr dc_inaddr; /* remote Internet address */ |
| 225 | u_char dc_lcn; /* LCN number */ |
| 226 | u_char dc_state; /* LCN state */ |
| 227 | u_short dc_timer; /* LCN timer */ |
| 228 | struct ifqueue dc_oq; /* LCN output queue */ |
| 229 | struct hdx_chan dc_rchan; /* LCN read HDX channel */ |
| 230 | struct hdx_chan dc_wchan; /* LCN write HDX channel */ |
| 231 | struct ifuba dc_ifuba; /* UNIBUS resources */ |
| 232 | u_short dc_flags; /* misc flags */ |
| 233 | }; |
| 234 | |
| 235 | struct ddn_softc /* device control structure */ |
| 236 | { |
| 237 | struct ifnet ddn_if; /* network-visible interface */ |
| 238 | struct ddn_cb ddn_cb[NDDNCH+1]; /* Logical Channel cntl blks */ |
| 239 | struct sioq ddn_sioq; /* start I/O queue */ |
| 240 | int ddn_vector; /* UNIBUS interrupt vector */ |
| 241 | u_short ddn_flags; /* misc flags */ |
| 242 | struct in_addr ddn_ipaddr; /* local IP address */ |
| 243 | } ddn_softc[NDDN]; |
| 244 | \f |
| 245 | |
| 246 | /***********************************************************************\ |
| 247 | * ddnprobe() * |
| 248 | ************************************************************************* |
| 249 | * * |
| 250 | * This routine probes the device to obtain the UNIBUS interrupt * |
| 251 | * vector. Since the UMC is a soft vector device, we obtain * |
| 252 | * an unused vector from the uba structure and return that. * |
| 253 | * The UMC is given the vector and the board is reset. * |
| 254 | * In order to save the vector in the device info structure, we * |
| 255 | * place it in a static temporary where the attach routine can * |
| 256 | * find it and save it in the device info structure. This is * |
| 257 | * necessary because probe only provides a pointer to the device * |
| 258 | * and we have no idea which unit is being referenced. This * |
| 259 | * works in 4.2 because the attach routine is called immediately * |
| 260 | * after a successful probe. * |
| 261 | * * |
| 262 | \***********************************************************************/ |
| 263 | |
| 264 | #define INIT_DELAY (100 * 2) /* time for board initialization */ |
| 265 | /* ( in 10 millisecond ticks) */ |
| 266 | |
| 267 | static int savevec; /* static variable for vector */ |
| 268 | |
| 269 | ddnprobe(reg) |
| 270 | caddr_t reg; |
| 271 | { |
| 272 | register int br, cvec; /* r11, r10 value-result */ |
| 273 | register struct ddnregs *addr = (struct ddnregs *)reg; |
| 274 | register int delay_time; |
| 275 | |
| 276 | #ifdef lint |
| 277 | br = 0; cvec = br; br = cvec; ddnintr(0); |
| 278 | #endif |
| 279 | |
| 280 | cvec = savevec = (uba_hd[numuba].uh_lastiv -= 4); /* return vector */ |
| 281 | br = 0x15; /* return bus level */ |
| 282 | |
| 283 | addr->ioini = 0; /* clear handshake flags */ |
| 284 | addr->ionmi = 0; |
| 285 | addr->staack = 0; |
| 286 | addr->xfrgnt = 0; |
| 287 | addr->iovect = cvec >> 2; /* pass vector to UMC */ |
| 288 | addr->csr = DDN_RST; /* reset the board */ |
| 289 | delay_time = mfpr(TODR) + INIT_DELAY; |
| 290 | while(delay_time > mfpr(TODR)) /* wait */ ; |
| 291 | |
| 292 | return (sizeof(struct ddnregs)); |
| 293 | } |
| 294 | \f |
| 295 | |
| 296 | /***********************************************************************\ |
| 297 | * ddnattach * |
| 298 | ************************************************************************* |
| 299 | * * |
| 300 | * This routine attaches the device to the network software. * |
| 301 | * The network interface structure is filled in. The device * |
| 302 | * will be initialized when the system is ready to accept packets. * |
| 303 | * * |
| 304 | \***********************************************************************/ |
| 305 | |
| 306 | ddnattach(ui) |
| 307 | struct uba_device *ui; |
| 308 | { |
| 309 | register struct ddn_softc *ds = &ddn_softc[ui->ui_unit]; |
| 310 | |
| 311 | ds->ddn_vector = savevec; /* save vector from probe() */ |
| 312 | ds->ddn_if.if_unit = ui->ui_unit; /* set unit number */ |
| 313 | ds->ddn_if.if_name = "ddn"; /* set device name */ |
| 314 | ds->ddn_if.if_mtu = DDNMTU; /* set max msg size */ |
| 315 | ds->ddn_if.if_init = ddninit; /* set init routine addr */ |
| 316 | ds->ddn_if.if_ioctl = ddnioctl; /* set ioctl routine addr */ |
| 317 | ds->ddn_if.if_output = ddnoutput; /* set output routine addr */ |
| 318 | ds->ddn_if.if_reset = ddnreset; /* set reset routine addr */ |
| 319 | ds->ddn_if.if_watchdog = ddntimer; /* set timer routine addr */ |
| 320 | if_attach(&ds->ddn_if); |
| 321 | } |
| 322 | \f |
| 323 | |
| 324 | /***********************************************************************\ |
| 325 | * ddnreset() * |
| 326 | ************************************************************************* |
| 327 | * * |
| 328 | * Reset of interface after UNIBUS reset. * |
| 329 | * If interface is on specified uba, reset its state. * |
| 330 | * * |
| 331 | \***********************************************************************/ |
| 332 | |
| 333 | ddnreset(unit, uban) |
| 334 | int unit, uban; |
| 335 | { |
| 336 | register struct uba_device *ui; |
| 337 | register struct ddnregs *addr; |
| 338 | register int delay_time; |
| 339 | |
| 340 | if (unit >= NDDN || (ui = ddninfo[unit]) == 0 || ui->ui_alive == 0 || |
| 341 | ui->ui_ubanum != uban) |
| 342 | return; |
| 343 | |
| 344 | printf(" ddn%d", unit); |
| 345 | |
| 346 | addr = (struct ddnregs *)ui->ui_addr; |
| 347 | addr->ioini = 0; /* clear handshake flags */ |
| 348 | addr->ionmi = 0; |
| 349 | addr->staack = 0; |
| 350 | addr->xfrgnt = 0; |
| 351 | addr->iovect = ddn_softc[unit].ddn_vector >> 2; /* pass vector to UMC */ |
| 352 | addr->csr = DDN_RST; /* reset the board */ |
| 353 | delay_time = mfpr(TODR) + INIT_DELAY; |
| 354 | while(delay_time > mfpr(TODR)) /* wait */ ; |
| 355 | |
| 356 | ddninit(unit); |
| 357 | } |
| 358 | \f |
| 359 | |
| 360 | /***********************************************************************\ |
| 361 | * ddninit() * |
| 362 | ************************************************************************* |
| 363 | * * |
| 364 | * This routine initializes the interface for operation. The * |
| 365 | * device control blocks are initialized, UNIBUS resources are * |
| 366 | * allocated and an X.25 initialization message is sent to the * |
| 367 | * UMC. * |
| 368 | * * |
| 369 | \***********************************************************************/ |
| 370 | |
| 371 | ddninit(unit) |
| 372 | int unit; |
| 373 | { |
| 374 | register struct ddn_softc *ds = &ddn_softc[unit]; |
| 375 | register struct ddn_cb *dc; |
| 376 | register struct uba_device *ui = ddninfo[unit]; |
| 377 | int lcn, s; |
| 378 | |
| 379 | #ifdef DDNDEBUG |
| 380 | if (ddn_debug > 0) |
| 381 | { |
| 382 | printf("ddn%d: ddninit()\n", unit); |
| 383 | } |
| 384 | #endif DDNDEBUG |
| 385 | |
| 386 | if (ds->ddn_if.if_addrlist == 0) /* if we have no internet addr */ |
| 387 | return; /* don't init yet */ |
| 388 | |
| 389 | dc = ds->ddn_cb; /* setup ptr to first LCN cntl block */ |
| 390 | |
| 391 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* for all LCN's ... */ |
| 392 | { |
| 393 | dc->dc_lcn = lcn; /* record LCN */ |
| 394 | dc->dc_inaddr.s_addr = 0; /* clear remote internet addr */ |
| 395 | dc->dc_state = LC_DOWN; /* init LCN state */ |
| 396 | dc->dc_timer = TMO_OFF; /* turn LCN timer off */ |
| 397 | |
| 398 | /* init LCN output queue */ |
| 399 | |
| 400 | dc->dc_oq.ifq_head = (struct mbuf *)0; |
| 401 | dc->dc_oq.ifq_tail = (struct mbuf *)0; |
| 402 | dc->dc_oq.ifq_len = 0; |
| 403 | dc->dc_oq.ifq_maxlen = DDN_OQMAX; |
| 404 | dc->dc_oq.ifq_drops = 0; |
| 405 | |
| 406 | /* init HDX channels */ |
| 407 | |
| 408 | dc->dc_rchan.hc_next = (struct hdx_chan *)0; |
| 409 | dc->dc_rchan.hc_chan = lcn * 2; |
| 410 | dc->dc_wchan.hc_next = (struct hdx_chan *)0; |
| 411 | dc->dc_wchan.hc_chan = (lcn * 2) + 1; |
| 412 | |
| 413 | /* init UNIBUS resources */ |
| 414 | |
| 415 | if (if_ubainit(&dc->dc_ifuba, ui->ui_ubanum, |
| 416 | 0, (int)btoc(DDNMTU)) == 0) |
| 417 | { |
| 418 | printf("ddn%d: failed getting UBA resources for lcn %d\n", |
| 419 | unit, lcn); |
| 420 | ds->ddn_if.if_flags &= ~(IFF_RUNNING | IFF_UP); |
| 421 | return; |
| 422 | } |
| 423 | |
| 424 | dc->dc_flags = 0; /* initialize flags */ |
| 425 | |
| 426 | dc++; /* point at next cntl blk */ |
| 427 | } |
| 428 | |
| 429 | ds->ddn_sioq.sq_head = (struct hdx_chan *)0; |
| 430 | ds->ddn_sioq.sq_tail = (struct hdx_chan *)0; |
| 431 | ds->ddn_if.if_flags |= IFF_RUNNING; |
| 432 | |
| 433 | s = splimp(); |
| 434 | |
| 435 | dc = ds->ddn_cb; /* setup ptr to first LCN cntl block */ |
| 436 | |
| 437 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* issue reads on all LCNs */ |
| 438 | { |
| 439 | ddn_iorq(ds, dc, DDNMTU, DDNRDB+DDNSTR); |
| 440 | dc++; |
| 441 | } |
| 442 | |
| 443 | x25_init(ds); /* init the X.25 board */ |
| 444 | |
| 445 | splx(s); |
| 446 | |
| 447 | ddntimer(unit); /* start timers */ |
| 448 | } |
| 449 | \f |
| 450 | |
| 451 | /***********************************************************************\ |
| 452 | * ddnoutput() * |
| 453 | ************************************************************************* |
| 454 | * * |
| 455 | * This routine is called by the network software when it has * |
| 456 | * an IP datagram to send out this interface. An attempt is * |
| 457 | * made to find a LCN which has a virtual circuit open to the * |
| 458 | * indicated host. If an LCN is found the packet is queued for * |
| 459 | * output on that LCN. * |
| 460 | * * |
| 461 | \***********************************************************************/ |
| 462 | |
| 463 | ddnoutput(ifp, m0, dst) |
| 464 | struct ifnet *ifp; |
| 465 | struct mbuf *m0; |
| 466 | struct sockaddr_in *dst; |
| 467 | { |
| 468 | register struct mbuf *m = m0; |
| 469 | register struct ddn_softc *ds = &ddn_softc[ifp->if_unit]; |
| 470 | register struct ddn_cb *dc; |
| 471 | register struct ifqueue *oq; |
| 472 | int s; |
| 473 | |
| 474 | if ((ds->ddn_if.if_flags & IFF_UP) == 0) |
| 475 | return (ENETDOWN); |
| 476 | |
| 477 | switch (dst->sin_family) |
| 478 | { |
| 479 | |
| 480 | #ifdef INET |
| 481 | case AF_INET: |
| 482 | break; |
| 483 | #endif INET |
| 484 | |
| 485 | default: |
| 486 | printf("ddn%d: can't handle af%d\n", ifp->if_unit, |
| 487 | dst->sin_family); |
| 488 | m_freem(m0); |
| 489 | return (EAFNOSUPPORT); |
| 490 | } |
| 491 | |
| 492 | |
| 493 | #ifdef DDNDEBUG |
| 494 | if (ddn_debug > 6) |
| 495 | { |
| 496 | printf("ddnoutput(): dst = "); |
| 497 | prt_addr(dst->sin_addr.s_addr); |
| 498 | printf("\n"); |
| 499 | } |
| 500 | #endif DDNDEBUG |
| 501 | |
| 502 | s = splimp(); |
| 503 | |
| 504 | /* try to find an LCN */ |
| 505 | |
| 506 | if (dc = locate_x25_lcn(ds, dst->sin_addr)) |
| 507 | { /* if found */ |
| 508 | oq = &(dc->dc_oq); /* point to output queue */ |
| 509 | dc->dc_state = LC_DATA_IDLE; |
| 510 | dc->dc_timer = TMO_DATA_IDLE; |
| 511 | if (IF_QFULL(oq)) /* if q full */ |
| 512 | { |
| 513 | IF_DROP(oq); /* drop the data */ |
| 514 | m_freem(m); |
| 515 | splx(s); |
| 516 | return (ENOBUFS); |
| 517 | } |
| 518 | IF_ENQUEUE(oq, m); /* otherwise queue it */ |
| 519 | ddn_start(ds, dc); /* and try to output */ |
| 520 | splx(s); |
| 521 | return (0); |
| 522 | } |
| 523 | else /* if no circuit available */ |
| 524 | { |
| 525 | IF_DROP(&ifp->if_snd); /* drop the data */ |
| 526 | m_freem(m); |
| 527 | splx(s); |
| 528 | return (EHOSTUNREACH); |
| 529 | } |
| 530 | |
| 531 | } |
| 532 | \f |
| 533 | |
| 534 | /***********************************************************************\ |
| 535 | * ddntimer() * |
| 536 | ************************************************************************* |
| 537 | * * |
| 538 | * This routine is entered once a second to perform timer * |
| 539 | * managment. The LCN table is scanned for active timers, * |
| 540 | * (nonzero) which are decremented. If a timer expires * |
| 541 | * (becomes zero), the proper action is taken. * |
| 542 | * * |
| 543 | \***********************************************************************/ |
| 544 | |
| 545 | int ddntimer(unit) |
| 546 | int unit; |
| 547 | { |
| 548 | register struct ddn_softc *ds = &ddn_softc[unit]; |
| 549 | register struct ddn_cb *dc; |
| 550 | register int s, lcn; |
| 551 | |
| 552 | #ifdef DDNDEBUG |
| 553 | if (ddn_debug > 7) |
| 554 | { |
| 555 | printf("ddntimer()\n"); |
| 556 | } |
| 557 | #endif DDNDEBUG |
| 558 | |
| 559 | ds->ddn_if.if_timer = DDN_TIMEOUT; /* restart timer */ |
| 560 | |
| 561 | dc = ds->ddn_cb; |
| 562 | |
| 563 | s = splimp(); |
| 564 | |
| 565 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* scan all LCN's */ |
| 566 | { |
| 567 | if (dc->dc_timer && (--(dc->dc_timer) == 0)) |
| 568 | { /* if a timer expired */ |
| 569 | if (dc->dc_state == LC_RESTART) |
| 570 | { /* if a restart was out */ |
| 571 | send_restart(ds); /* send another one */ |
| 572 | break; |
| 573 | } |
| 574 | else /* otherwise */ |
| 575 | { |
| 576 | clear_lcn(ds, dc); /* clear the LCN */ |
| 577 | } |
| 578 | } |
| 579 | dc++; |
| 580 | } |
| 581 | splx(s); |
| 582 | } |
| 583 | \f |
| 584 | |
| 585 | /***********************************************************************\ |
| 586 | * ddnioctl() * |
| 587 | ************************************************************************* |
| 588 | * * |
| 589 | * This routine processes device dependent ioctl's. Currently, * |
| 590 | * the only ioctl supported is used to set the host's internet * |
| 591 | * address for this network interface. * |
| 592 | * * |
| 593 | \***********************************************************************/ |
| 594 | |
| 595 | ddnioctl(ifp, cmd, data) |
| 596 | register struct ifnet *ifp; |
| 597 | int cmd; |
| 598 | caddr_t data; |
| 599 | { |
| 600 | struct ifaddr *ifa = (struct ifaddr *) data; |
| 601 | int s = splimp(), error = 0; |
| 602 | |
| 603 | switch (cmd) { |
| 604 | |
| 605 | case SIOCSIFADDR: |
| 606 | if (ifa->ifa_addr->sa_family != AF_INET) |
| 607 | return(EINVAL); |
| 608 | ifp->if_flags |= IFF_UP; |
| 609 | if ((ifp->if_flags & IFF_RUNNING) == 0) |
| 610 | ddninit(ifp->if_unit); |
| 611 | ddn_softc[ifp->if_unit].ddn_ipaddr = IA_SIN(ifa)->sin_addr; |
| 612 | break; |
| 613 | |
| 614 | default: |
| 615 | error = EINVAL; |
| 616 | break; |
| 617 | } |
| 618 | splx(s); |
| 619 | return (error); |
| 620 | } |
| 621 | \f |
| 622 | |
| 623 | /***********************************************************************\ |
| 624 | * ddnintr() * |
| 625 | ************************************************************************* |
| 626 | * * |
| 627 | * This is the interrupt handler for UNIBUS interrupts from the * |
| 628 | * UMC. The interrupting HDX channel and interrupt type are * |
| 629 | * obtained from the completion comm regs. If the interrupt is * |
| 630 | * an I/O request acknowledge, the next I/O request is passed * |
| 631 | * to the UMC. If the interrupt is an I/O completion, the * |
| 632 | * completion is processed depending on whether it is for the * |
| 633 | * supervisor or a data channel. * |
| 634 | * * |
| 635 | \***********************************************************************/ |
| 636 | |
| 637 | ddnintr(unit) |
| 638 | int unit; |
| 639 | { |
| 640 | register struct ddn_softc *ds = &ddn_softc[unit]; |
| 641 | register struct hdx_chan *hc; |
| 642 | register struct ddnregs *addr = (struct ddnregs *)ddninfo[unit]->ui_addr; |
| 643 | int chan, type, cc, cnt; |
| 644 | |
| 645 | /* |
| 646 | * Check for hardware errors. |
| 647 | */ |
| 648 | if (addr->csr & DDN_UER) |
| 649 | { |
| 650 | printf("ddn%d: hard error csr=%b\n", unit, addr->csr, DDN_BITS); |
| 651 | addr->csr = 0; /* disable i/f */ |
| 652 | return; |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * Get logical channel info. |
| 657 | */ |
| 658 | if ((chan = addr->stachn) >= ((NDDNCH+1)*2)) |
| 659 | { |
| 660 | printf("ddn%d: unknown channel, chan=%d\n", unit, chan); |
| 661 | return; |
| 662 | } |
| 663 | |
| 664 | if (chan & 0x01) |
| 665 | hc = &(ds->ddn_cb[chan/2].dc_wchan); |
| 666 | else |
| 667 | hc = &(ds->ddn_cb[chan/2].dc_rchan); |
| 668 | |
| 669 | type = addr->statyp; |
| 670 | cc = addr->stacc; |
| 671 | cnt = hc->hc_cnt - addr->stacnt; |
| 672 | |
| 673 | /* Figure out what kind of interrupt it was */ |
| 674 | |
| 675 | switch(type) |
| 676 | { |
| 677 | case DDNSACK: /* start i/o accepted */ |
| 678 | if (hc != ds->ddn_sioq.sq_head) /* does ack match waiting req? */ |
| 679 | { |
| 680 | printf("ddn%d: STARTIO error chan=%d hc=%x sq=%x\n", |
| 681 | unit, chan, hc, ds->ddn_sioq.sq_head); |
| 682 | addr->csr = 0; /* disable UMC */ |
| 683 | return; |
| 684 | } |
| 685 | |
| 686 | /* dequeue old request by copying link to queue head */ |
| 687 | /* and start next I/O request if queue has not gone empty */ |
| 688 | |
| 689 | if (ds->ddn_sioq.sq_head = ds->ddn_sioq.sq_head->hc_next) |
| 690 | { |
| 691 | start_chn(ds); |
| 692 | } |
| 693 | break; |
| 694 | |
| 695 | case DDNDONE: /* i/o completion */ |
| 696 | switch (cc) |
| 697 | { |
| 698 | case DDNIOCABT: /* probably VCN flush */ |
| 699 | break; |
| 700 | |
| 701 | case DDNIOCERR: |
| 702 | printf("ddn%d: program error ", unit); |
| 703 | goto daterr; |
| 704 | |
| 705 | case DDNIOCOVR: |
| 706 | printf("ddn%d: overrun error ", unit); |
| 707 | goto daterr; |
| 708 | |
| 709 | case DDNIOCUBE: |
| 710 | printf("ddn%d: NXM timeout or UB parity error ", unit); |
| 711 | |
| 712 | daterr: |
| 713 | printf("chan=%d func=%x\n", chan, hc->hc_func); |
| 714 | if (hc->hc_func & DDNRDB) |
| 715 | ds->ddn_if.if_ierrors++; |
| 716 | else |
| 717 | ds->ddn_if.if_oerrors++; |
| 718 | } |
| 719 | |
| 720 | /* was it supervisor or data traffic? */ |
| 721 | |
| 722 | if (chan > 1) |
| 723 | ddn_data(unit, chan, cc, cnt); |
| 724 | else |
| 725 | ddn_supr(unit, chan, cc); |
| 726 | |
| 727 | } |
| 728 | |
| 729 | /* |
| 730 | * Ack the interrupt |
| 731 | */ |
| 732 | addr->staack = 1; |
| 733 | if (!(addr->ionmi)) |
| 734 | { |
| 735 | addr->ionmi = 1; |
| 736 | addr->csr = DDN_DMA|DDN_WRT|DDN_IEN|DDN_NMI; |
| 737 | } |
| 738 | } |
| 739 | \f |
| 740 | |
| 741 | /***********************************************************************\ |
| 742 | * x25_init() * |
| 743 | ************************************************************************* |
| 744 | * * |
| 745 | * This routine builds and sends an X.25 initialization msg * |
| 746 | * to the UMC. * |
| 747 | * * |
| 748 | \***********************************************************************/ |
| 749 | |
| 750 | static void x25_init(ds) |
| 751 | struct ddn_softc *ds; |
| 752 | { |
| 753 | struct mbuf *m; |
| 754 | |
| 755 | #ifdef DDNDEBUG |
| 756 | if (ddn_debug > 0) |
| 757 | { |
| 758 | printf("ddn%d: x25_init()\n", ds->ddn_if.if_unit); |
| 759 | } |
| 760 | #endif DDNDEBUG |
| 761 | |
| 762 | MGET(m, M_DONTWAIT, MT_DATA); /* try to get X25 init buffer */ |
| 763 | if (m == 0) |
| 764 | { |
| 765 | printf("ddn%d: couldn't get X25 init buffer\n", ds->ddn_if.if_unit); |
| 766 | return; |
| 767 | } |
| 768 | |
| 769 | init_msg[3] = sizeof(init_msg) - 4; /* set cmnd ext length */ |
| 770 | |
| 771 | bcopy((caddr_t)init_msg, mtod(m, caddr_t), sizeof(init_msg)); |
| 772 | |
| 773 | m->m_len = sizeof(init_msg); /* set msg length */ |
| 774 | |
| 775 | IF_ENQUEUE(&(ds->ddn_cb[0].dc_oq), m); |
| 776 | ddn_start(ds, &(ds->ddn_cb[0])); |
| 777 | } |
| 778 | \f |
| 779 | |
| 780 | /***********************************************************************\ |
| 781 | * locate_x25_lcn() * |
| 782 | ************************************************************************* |
| 783 | * * |
| 784 | * This routine tries to locate an X25 LCN associated with a * |
| 785 | * remote internet address. A linear search of the LCN table * |
| 786 | * is made for a matching address. If the search succeeds, the * |
| 787 | * LCN is returned. If the search fails, the LCN table is * |
| 788 | * searched for an unused table entry. If an unused table entry * |
| 789 | * is found, an X25 call is generated to the host specified in * |
| 790 | * the destination internet address. If no LCN is available, * |
| 791 | * zero is returned. * |
| 792 | * * |
| 793 | \***********************************************************************/ |
| 794 | |
| 795 | static struct ddn_cb *locate_x25_lcn(ds, ip_addr) |
| 796 | struct ddn_softc *ds; |
| 797 | struct in_addr ip_addr; |
| 798 | { |
| 799 | register int lcn; |
| 800 | register struct ddn_cb *dc; |
| 801 | |
| 802 | #ifdef DDNDEBUG |
| 803 | if (ddn_debug > 6) |
| 804 | { |
| 805 | printf("locate_x25_lcn()\n"); |
| 806 | } |
| 807 | #endif DDNDEBUG |
| 808 | |
| 809 | dc = &(ds->ddn_cb[1]); |
| 810 | for(lcn = 1; lcn <= NDDNCH; lcn++) /* scan LCN table for addr match */ |
| 811 | { |
| 812 | if (dc->dc_inaddr.s_addr == ip_addr.s_addr) /* if found */ |
| 813 | return(dc); /* return LCN */ |
| 814 | dc++; |
| 815 | } |
| 816 | |
| 817 | dc = &(ds->ddn_cb[1]); |
| 818 | for(lcn = 1; lcn <= NDDNCH; lcn++) /* scan LCN table for free entry */ |
| 819 | { |
| 820 | if (dc->dc_state == LC_IDLE) |
| 821 | break; |
| 822 | dc++; |
| 823 | } |
| 824 | |
| 825 | if (lcn > NDDNCH) /* if we didn't find a free entry */ |
| 826 | return(0); /* return empty handed */ |
| 827 | |
| 828 | |
| 829 | if (convert_ip_addr(ip_addr, cb_called_addr) && make_x25_call(ds, dc)) |
| 830 | { /* addr can be converted */ |
| 831 | dc->dc_inaddr.s_addr = ip_addr.s_addr; |
| 832 | return(dc); /* and return the LCN */ |
| 833 | } |
| 834 | else |
| 835 | { |
| 836 | return(0); /* give up */ |
| 837 | } |
| 838 | } |
| 839 | \f |
| 840 | |
| 841 | /***********************************************************************\ |
| 842 | * convert_ip_addr() * |
| 843 | ************************************************************************* |
| 844 | * * |
| 845 | * This routine accepts an internet address and attempts to * |
| 846 | * translate to an equivalent X25 address. For DDN this follows * |
| 847 | * the guidelines in the DDN X25 interface spec. The resultant * |
| 848 | * X25 address is stored in the X25 called addr buffer. The * |
| 849 | * routine returns TRUE if successfull, FALSE otherwise. * |
| 850 | * * |
| 851 | * NOTE: Although IF-11/X25 was designed to accept ASCII coded * |
| 852 | * digits for the address fields, we only supply the binary * |
| 853 | * values. The front-end only uses the low four bits to extract * |
| 854 | * the binary value from the ASCII digits, so this works out. * |
| 855 | * * |
| 856 | \***********************************************************************/ |
| 857 | |
| 858 | static boolean convert_ip_addr(ip_addr, x25addr) |
| 859 | struct in_addr ip_addr; |
| 860 | u_char x25addr[]; |
| 861 | { |
| 862 | register int temp; |
| 863 | union { |
| 864 | struct in_addr ip; |
| 865 | struct { /* (assumes Class A network number) */ |
| 866 | u_char s_net; |
| 867 | u_char s_host; |
| 868 | u_char s_lh; |
| 869 | u_char s_impno; |
| 870 | } imp; |
| 871 | } imp_addr; |
| 872 | |
| 873 | imp_addr.ip = ip_addr; |
| 874 | x25addr[0] = 14; /* set addr length */ |
| 875 | |
| 876 | x25addr[1] = 0; /* clear DNIC */ |
| 877 | x25addr[2] = 0; |
| 878 | x25addr[3] = 0; |
| 879 | x25addr[4] = 0; |
| 880 | |
| 881 | if (imp_addr.imp.s_host < 64) /* Physical: 0000 0 IIIHH00 [SS] */ |
| 882 | { /* s_impno -> III, s_host -> HH */ |
| 883 | x25addr[5] = 0; /* set flag bit */ |
| 884 | x25addr[6] = imp_addr.imp.s_impno / 100; |
| 885 | x25addr[7] = (imp_addr.imp.s_impno % 100) / 10; |
| 886 | x25addr[8] = imp_addr.imp.s_impno % 10; |
| 887 | x25addr[9] = imp_addr.imp.s_host / 10; |
| 888 | x25addr[10] = imp_addr.imp.s_host % 10; |
| 889 | } |
| 890 | else /* Logical: 0000 1 RRRRR00 [SS] */ |
| 891 | { /* s_host * 256 + s_impno -> RRRRR */ |
| 892 | temp = (imp_addr.imp.s_host << 8) + imp_addr.imp.s_impno; |
| 893 | x25addr[5] = 1; |
| 894 | x25addr[6] = temp / 10000; |
| 895 | x25addr[7] = (temp % 10000) / 1000; |
| 896 | x25addr[8] = (temp % 1000) / 100; |
| 897 | x25addr[9] = (temp % 100) / 10; |
| 898 | x25addr[10] = temp % 10; |
| 899 | } |
| 900 | |
| 901 | x25addr[11] = 0; /* clear rest of addr */ |
| 902 | x25addr[12] = 0; |
| 903 | x25addr[13] = 0; |
| 904 | x25addr[14] = 0; |
| 905 | |
| 906 | #ifdef DDNDEBUG |
| 907 | if (ddn_debug > 4) |
| 908 | { |
| 909 | printf("convert_ip_addr(): "); |
| 910 | prt_addr(ip_addr); |
| 911 | printf(" ==> "); |
| 912 | prt_bytes(x25addr, 14); |
| 913 | printf("\n"); |
| 914 | } |
| 915 | #endif DDNDEBUG |
| 916 | |
| 917 | return(1); |
| 918 | } |
| 919 | \f |
| 920 | |
| 921 | /***********************************************************************\ |
| 922 | * convert_x25_addr() * |
| 923 | ************************************************************************* |
| 924 | * * |
| 925 | * This routine accepts an X25 address and attempts to translate * |
| 926 | * to an equivalent internet address. For DDN this follows the * |
| 927 | * guidelines in the DDN X25 interface spec. The resultant * |
| 928 | * internet address is returned to the caller. * |
| 929 | * * |
| 930 | \***********************************************************************/ |
| 931 | |
| 932 | static int convert_x25_addr(x25addr) |
| 933 | u_char x25addr[]; |
| 934 | { |
| 935 | register int cnt, temp; |
| 936 | union { |
| 937 | struct in_addr ip; |
| 938 | struct { /* (assumes Class A network number) */ |
| 939 | u_char s_net; |
| 940 | u_char s_host; |
| 941 | u_char s_lh; |
| 942 | u_char s_impno; |
| 943 | } imp; |
| 944 | } imp_addr; |
| 945 | |
| 946 | if (((cnt = x25addr[0]) < 12) || (cnt > 14)) |
| 947 | { |
| 948 | printf("DDN: illegal X25 address length!\n"); |
| 949 | return(0); |
| 950 | } |
| 951 | |
| 952 | switch(x25addr[5] & 0x0f) |
| 953 | { |
| 954 | case 0: /* Physical: 0000 0 IIIHH00 [SS] */ |
| 955 | imp_addr.imp.s_impno = |
| 956 | ((int)(x25addr[6] & 0x0f) * 100) + |
| 957 | ((int)(x25addr[7] & 0x0f) * 10) + |
| 958 | ((int)(x25addr[8] & 0x0f)); |
| 959 | |
| 960 | |
| 961 | imp_addr.imp.s_host = |
| 962 | ((int)(x25addr[9] & 0x0f) * 10) + |
| 963 | ((int)(x25addr[10] & 0x0f)); |
| 964 | break; |
| 965 | case 1: /* Logical: 0000 1 RRRRR00 [SS] */ |
| 966 | temp = ((int)(x25addr[6] & 0x0f) * 10000) |
| 967 | + ((int)(x25addr[7] & 0x0f) * 1000) |
| 968 | + ((int)(x25addr[8] & 0x0f) * 100) |
| 969 | + ((int)(x25addr[9] & 0x0f) * 10) |
| 970 | + ((int)(x25addr[10] & 0x0f)); |
| 971 | |
| 972 | imp_addr.imp.s_host = temp >> 8; |
| 973 | imp_addr.imp.s_impno = temp & 0xff; |
| 974 | break; |
| 975 | default: |
| 976 | printf("DDN: illegal X25 address format!\n"); |
| 977 | return(0); |
| 978 | } |
| 979 | |
| 980 | imp_addr.imp.s_lh = 0; |
| 981 | imp_addr.imp.s_net = 0; |
| 982 | |
| 983 | #ifdef DDNDEBUG |
| 984 | if (ddn_debug > 4) |
| 985 | { |
| 986 | printf("convert_x25_addr(): "); |
| 987 | prt_bytes(&x25addr[1], cnt); |
| 988 | printf(" ==> "); |
| 989 | prt_addr(imp_addr.ip); |
| 990 | printf("\n"); |
| 991 | } |
| 992 | #endif DDNDEBUG |
| 993 | |
| 994 | return(imp_addr.ip.s_addr); |
| 995 | } |
| 996 | \f |
| 997 | |
| 998 | /***********************************************************************\ |
| 999 | * make_x25_call() * |
| 1000 | ************************************************************************* |
| 1001 | * * |
| 1002 | * This routine places an X25 call using the X25 Call Msg * |
| 1003 | * buffer. The calling LCN is placed in the appropriate state * |
| 1004 | * and a timer is started. * |
| 1005 | * * |
| 1006 | \***********************************************************************/ |
| 1007 | |
| 1008 | static boolean make_x25_call(ds, dc) |
| 1009 | register struct ddn_softc *ds; |
| 1010 | register struct ddn_cb *dc; |
| 1011 | { |
| 1012 | register struct mbuf *m_callbfr; |
| 1013 | register caddr_t cb; |
| 1014 | |
| 1015 | MGET(m_callbfr, M_DONTWAIT, MT_DATA); /* try to get call cmnd buffer */ |
| 1016 | if (m_callbfr == 0) |
| 1017 | return(0); |
| 1018 | |
| 1019 | cb = mtod(m_callbfr, caddr_t); |
| 1020 | |
| 1021 | (void)convert_ip_addr(ds->ddn_ipaddr, cb_calling_addr); |
| 1022 | |
| 1023 | cb_protocol[0] = 4; |
| 1024 | cb_protocol[1] = X25_PROTO_IP; /* protocol = IP */ |
| 1025 | cb_protocol[2] = 0; |
| 1026 | cb_protocol[3] = 0; |
| 1027 | cb_protocol[4] = 0; |
| 1028 | |
| 1029 | cb_facilities[0] = 4; /* number facility bytes */ |
| 1030 | cb_facilities[1] = 0; /* options marker */ |
| 1031 | cb_facilities[2] = 0; |
| 1032 | cb_facilities[3] = X25_FACIL_DDN; /* DDN standard mode */ |
| 1033 | cb_facilities[4] = FAC_DDNSTD; |
| 1034 | |
| 1035 | cb_user_data[0] = 0; /* no user data */ |
| 1036 | |
| 1037 | cb_cmnd[0] = CALL; /* set command code */ |
| 1038 | cb_cmnd[1] = dc->dc_lcn << 1; /* set channel id */ |
| 1039 | cb_cmnd[2] = 0; |
| 1040 | cb_cmnd[3] = (cb_called_addr[0] + 1) + /* tally up cmnd ext length */ |
| 1041 | (cb_calling_addr[0] + 1) + |
| 1042 | (cb_protocol[0] + 1) + |
| 1043 | (cb_facilities[0] + 1) + |
| 1044 | (cb_user_data[0] + 1); |
| 1045 | |
| 1046 | m_callbfr->m_len = cb_cmnd[3] + 4; |
| 1047 | |
| 1048 | /* copy command header */ |
| 1049 | bcopy((caddr_t)cb_cmnd, cb, 4); |
| 1050 | cb += 4; |
| 1051 | |
| 1052 | /* copy called address */ |
| 1053 | bcopy((caddr_t)cb_called_addr, cb, cb_called_addr[0] + 1); |
| 1054 | cb += (cb_called_addr[0] + 1); |
| 1055 | |
| 1056 | /* copy calling address */ |
| 1057 | bcopy((caddr_t)cb_calling_addr, cb, cb_calling_addr[0] + 1); |
| 1058 | cb += (cb_calling_addr[0] + 1); |
| 1059 | |
| 1060 | /* copy protocol */ |
| 1061 | bcopy((caddr_t)cb_protocol, cb, cb_protocol[0] + 1); |
| 1062 | cb += (cb_protocol[0] + 1); |
| 1063 | |
| 1064 | /* copy facilities */ |
| 1065 | bcopy((caddr_t)cb_facilities, cb, cb_facilities[0] + 1); |
| 1066 | cb += (cb_facilities[0] + 1); |
| 1067 | |
| 1068 | /* copy user data */ |
| 1069 | bcopy((caddr_t)cb_user_data, cb, cb_user_data[0] + 1); |
| 1070 | cb += (cb_user_data[0] + 1); |
| 1071 | |
| 1072 | dc->dc_state = LC_CALL_PENDING; /* set state */ |
| 1073 | dc->dc_timer = TMO_CALL_PENDING; /* start call timeout */ |
| 1074 | |
| 1075 | #ifdef DDNDEBUG |
| 1076 | if (ddn_debug > 3) |
| 1077 | { |
| 1078 | printf("make_x25_call(): call_bfr = "); |
| 1079 | prt_bytes(mtod(m_callbfr, u_char *), m_callbfr->m_len); |
| 1080 | printf("\n"); |
| 1081 | } |
| 1082 | #endif DDNDEBUG |
| 1083 | |
| 1084 | IF_ENQUEUE(&(ds->ddn_cb[0].dc_oq), m_callbfr); |
| 1085 | ddn_start(ds, &(ds->ddn_cb[0])); |
| 1086 | |
| 1087 | return(1); |
| 1088 | } |
| 1089 | \f |
| 1090 | |
| 1091 | /***********************************************************************\ |
| 1092 | * ddn_start() * |
| 1093 | ************************************************************************* |
| 1094 | * * |
| 1095 | * This routine attempts to start output of data queued on a * |
| 1096 | * specific LCN. If the LCN was not already busy and data is * |
| 1097 | * available for output, the data is copied into the LCN's I/O * |
| 1098 | * buffer and an I/O request queued to the UMC. * |
| 1099 | * * |
| 1100 | \***********************************************************************/ |
| 1101 | |
| 1102 | static void ddn_start(ds, dc) |
| 1103 | register struct ddn_softc *ds; |
| 1104 | register struct ddn_cb *dc; |
| 1105 | { |
| 1106 | register struct mbuf *m; |
| 1107 | int len; |
| 1108 | |
| 1109 | /* |
| 1110 | * If output isn't active, attempt to |
| 1111 | * start sending a new packet. |
| 1112 | */ |
| 1113 | |
| 1114 | if ((dc->dc_flags & DC_OBUSY) || |
| 1115 | (dc->dc_oq.ifq_len == 0) || |
| 1116 | ((dc->dc_lcn != 0) && (dc->dc_state != LC_DATA_IDLE))) |
| 1117 | { |
| 1118 | return; |
| 1119 | } |
| 1120 | |
| 1121 | IF_DEQUEUE(&dc->dc_oq, m); |
| 1122 | |
| 1123 | len = if_wubaput(&dc->dc_ifuba, m); /* copy data to mapped mem */ |
| 1124 | dc->dc_flags |= DC_OBUSY; |
| 1125 | |
| 1126 | ddn_iorq(ds, dc, len, DDNWRT+DDNEOS); |
| 1127 | } |
| 1128 | \f |
| 1129 | |
| 1130 | /***********************************************************************\ |
| 1131 | * ddn_iorq() * |
| 1132 | ************************************************************************* |
| 1133 | * * |
| 1134 | * This routine builds UMC I/O requests and queues them for * |
| 1135 | * delivery to the UMC. If the UMC I/O request comm regs are * |
| 1136 | * not busy, the I/O request is passed to the UMC. * |
| 1137 | * * |
| 1138 | \***********************************************************************/ |
| 1139 | |
| 1140 | static void ddn_iorq(ds, dc, len, func) |
| 1141 | struct ddn_softc *ds; |
| 1142 | struct ddn_cb *dc; |
| 1143 | int len, func; |
| 1144 | { |
| 1145 | register struct hdx_chan *hc; |
| 1146 | register int info; |
| 1147 | |
| 1148 | |
| 1149 | /* get appropriate UNIBUS mapping info */ |
| 1150 | |
| 1151 | if (func & DDNRDB) /* read or write? */ |
| 1152 | { |
| 1153 | hc = &dc->dc_rchan; |
| 1154 | info = dc->dc_ifuba.ifu_r.ifrw_info; |
| 1155 | } |
| 1156 | else |
| 1157 | { |
| 1158 | hc = &dc->dc_wchan; |
| 1159 | info = dc->dc_ifuba.ifu_w.ifrw_info; |
| 1160 | } |
| 1161 | |
| 1162 | /* set channel info */ |
| 1163 | |
| 1164 | hc->hc_adx = (u_char)((info & 0x30000) >> 12); |
| 1165 | hc->hc_addr = (u_short)(info & 0xffff); |
| 1166 | hc->hc_cnt = len; |
| 1167 | hc->hc_func = (u_char)func; |
| 1168 | hc->hc_sbfc = 0; |
| 1169 | |
| 1170 | /* |
| 1171 | * If UMC comm regs busy, queue start i/o for later. |
| 1172 | */ |
| 1173 | if (ds->ddn_sioq.sq_head) |
| 1174 | { |
| 1175 | (ds->ddn_sioq.sq_tail)->hc_next = hc; |
| 1176 | ds->ddn_sioq.sq_tail = hc; |
| 1177 | hc->hc_next = 0; |
| 1178 | return; |
| 1179 | } |
| 1180 | |
| 1181 | /* start i/o on channel now */ |
| 1182 | |
| 1183 | ds->ddn_sioq.sq_head = hc; |
| 1184 | ds->ddn_sioq.sq_tail = hc; |
| 1185 | hc->hc_next = 0; |
| 1186 | start_chn(ds); |
| 1187 | } |
| 1188 | \f |
| 1189 | |
| 1190 | /***********************************************************************\ |
| 1191 | * start_chn() * |
| 1192 | ************************************************************************* |
| 1193 | * * |
| 1194 | * This routine copies UMC I/O requests into the UMC comm regs * |
| 1195 | * and notifies the UMC. * |
| 1196 | * * |
| 1197 | \***********************************************************************/ |
| 1198 | |
| 1199 | static void start_chn(ds) |
| 1200 | struct ddn_softc *ds; |
| 1201 | { |
| 1202 | register struct hdx_chan *hc = ds->ddn_sioq.sq_head; |
| 1203 | register struct ddnregs *addr = |
| 1204 | (struct ddnregs *)ddninfo[ds->ddn_if.if_unit]->ui_addr; |
| 1205 | |
| 1206 | /* |
| 1207 | * Set up comm regs. |
| 1208 | */ |
| 1209 | addr->iochn = hc->hc_chan; |
| 1210 | addr->ioadx = hc->hc_adx; |
| 1211 | addr->ioadl = hc->hc_addr; |
| 1212 | addr->iocnt = hc->hc_cnt; |
| 1213 | addr->iofcn = hc->hc_func; |
| 1214 | addr->iosbf = hc->hc_sbfc; |
| 1215 | addr->ioini = 1; |
| 1216 | |
| 1217 | /* signal UMC if necessary */ |
| 1218 | |
| 1219 | if (!(addr->ionmi)) |
| 1220 | { |
| 1221 | addr->ionmi = 1; |
| 1222 | addr->csr = DDN_DMA|DDN_WRT|DDN_IEN|DDN_NMI; |
| 1223 | } |
| 1224 | } |
| 1225 | \f |
| 1226 | |
| 1227 | /***********************************************************************\ |
| 1228 | * ddn_data() * |
| 1229 | ************************************************************************* |
| 1230 | * * |
| 1231 | * This routine is called when a data channel I/O completes. * |
| 1232 | * If the completion was for a write, an attempt is made to * |
| 1233 | * start output on the next packet waiting for output on that * |
| 1234 | * LCN. If the completion was for a read, the received packet * |
| 1235 | * is sent to the IP input queue (if no error) and another read * |
| 1236 | * is started on the LCN. * |
| 1237 | * * |
| 1238 | \***********************************************************************/ |
| 1239 | |
| 1240 | static void ddn_data(unit, chan, cc, rcnt) |
| 1241 | int unit, chan, cc, rcnt; |
| 1242 | { |
| 1243 | register struct ddn_softc *ds = &ddn_softc[unit]; |
| 1244 | register struct ddn_cb *dc = &(ds->ddn_cb[chan/2]); |
| 1245 | register struct ifqueue *inq = &ipintrq; |
| 1246 | register struct mbuf *m; |
| 1247 | |
| 1248 | if (chan & 0x01) /* was it read or write? */ |
| 1249 | { /* write, fire up next output */ |
| 1250 | ds->ddn_if.if_opackets++; |
| 1251 | dc->dc_flags &= ~DC_OBUSY; |
| 1252 | ddn_start(ds, dc); |
| 1253 | } |
| 1254 | else /* read, process rcvd packet */ |
| 1255 | { |
| 1256 | if (cc == DDNIOCOK) |
| 1257 | { /* Queue good packet for input */ |
| 1258 | ds->ddn_if.if_ipackets++; |
| 1259 | dc->dc_state = LC_DATA_IDLE; |
| 1260 | dc->dc_timer = TMO_DATA_IDLE; |
| 1261 | m = if_rubaget(&(dc->dc_ifuba), rcnt, 0, &ds->ddn_if); |
| 1262 | if (m) |
| 1263 | { |
| 1264 | if (IF_QFULL(inq)) |
| 1265 | { |
| 1266 | IF_DROP(inq); |
| 1267 | m_freem(m); |
| 1268 | } |
| 1269 | else |
| 1270 | { |
| 1271 | IF_ENQUEUE(inq, m); |
| 1272 | schednetisr(NETISR_IP); |
| 1273 | } |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | /* hang a new data read */ |
| 1278 | |
| 1279 | ddn_iorq(ds, dc, DDNMTU, DDNRDB+DDNSTR); |
| 1280 | |
| 1281 | } |
| 1282 | } |
| 1283 | \f |
| 1284 | |
| 1285 | /***********************************************************************\ |
| 1286 | * ddn_supr() * |
| 1287 | ************************************************************************* |
| 1288 | * * |
| 1289 | * This routine is called when a supervisor I/O completes. * |
| 1290 | * If the completion was for a write, an attempt is made to * |
| 1291 | * start output on the next supervisor command waiting for * |
| 1292 | * output. If the completion was for a read, the received * |
| 1293 | * supervisor message is processed and another read is started. * |
| 1294 | * * |
| 1295 | \***********************************************************************/ |
| 1296 | |
| 1297 | static void ddn_supr(unit, chan, cc) |
| 1298 | int unit, chan, cc; |
| 1299 | { |
| 1300 | register struct ddn_softc *ds = &ddn_softc[unit]; |
| 1301 | u_char *p; |
| 1302 | |
| 1303 | /* was it read or write? */ |
| 1304 | |
| 1305 | if (chan & 0x01) |
| 1306 | { |
| 1307 | ds->ddn_cb[0].dc_flags &= ~DC_OBUSY; |
| 1308 | ddn_start(ds, &(ds->ddn_cb[0])); |
| 1309 | } |
| 1310 | else |
| 1311 | { |
| 1312 | if (cc == DDNIOCOK) |
| 1313 | { |
| 1314 | p = (u_char *)(ds->ddn_cb[0].dc_ifuba.ifu_r.ifrw_addr); |
| 1315 | |
| 1316 | /* process supervisor message */ |
| 1317 | |
| 1318 | supr_msg(ds, p); |
| 1319 | |
| 1320 | } |
| 1321 | |
| 1322 | /* hang a new supr read */ |
| 1323 | |
| 1324 | ddn_iorq(ds, &(ds->ddn_cb[0]), DDNMTU, DDNRDB+DDNSTR); |
| 1325 | } |
| 1326 | } |
| 1327 | \f |
| 1328 | |
| 1329 | /***********************************************************************\ |
| 1330 | * supr_msg() * |
| 1331 | ************************************************************************* |
| 1332 | * * |
| 1333 | * This routine processes received supervisor messages. * |
| 1334 | * Depending on the message type, the appropriate action is * |
| 1335 | * taken. |
| 1336 | * * |
| 1337 | \***********************************************************************/ |
| 1338 | |
| 1339 | static void supr_msg(ds, p) |
| 1340 | struct ddn_softc *ds; |
| 1341 | u_char p[]; |
| 1342 | { |
| 1343 | register struct ddn_cb *dc; |
| 1344 | register int lcn; |
| 1345 | register struct mbuf *m; |
| 1346 | |
| 1347 | #ifdef DDNDEBUG |
| 1348 | if (ddn_debug > 5) |
| 1349 | { |
| 1350 | printf("supr_msg(): "); |
| 1351 | prt_bytes(p, 4+p[3]); |
| 1352 | printf("\n"); |
| 1353 | } |
| 1354 | #endif DDNDEBUG |
| 1355 | |
| 1356 | switch (p[0]) |
| 1357 | { |
| 1358 | case LINE_STATUS: /* link status msg */ |
| 1359 | if (p[2] == LINK_UP) /* if link came up */ |
| 1360 | { |
| 1361 | send_restart(ds); /* send restart msg */ |
| 1362 | } |
| 1363 | else /* if link went down */ |
| 1364 | { |
| 1365 | ds->ddn_if.if_flags &= ~IFF_UP; |
| 1366 | dc = ds->ddn_cb; |
| 1367 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* for all LCN's */ |
| 1368 | { |
| 1369 | dc->dc_state = LC_DOWN; /* set state */ |
| 1370 | dc->dc_timer = TMO_OFF; /* stop timer */ |
| 1371 | dc++; |
| 1372 | } |
| 1373 | } |
| 1374 | break; |
| 1375 | |
| 1376 | case RESTART: /* restart received */ |
| 1377 | if (ds->ddn_cb[0].dc_state != LC_RESTART) /* if not restarting */ |
| 1378 | send_supr(ds, RSTRT_ACK, 0, 0); /* send restart ack */ |
| 1379 | /* fall thru */ |
| 1380 | case RSTRT_ACK: /* restart ack */ |
| 1381 | ds->ddn_if.if_flags |= IFF_UP; |
| 1382 | dc = ds->ddn_cb; |
| 1383 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* for all LCN's */ |
| 1384 | { |
| 1385 | dc->dc_state = LC_IDLE; /* set state */ |
| 1386 | dc->dc_timer = TMO_OFF; /* stop timer */ |
| 1387 | dc->dc_inaddr.s_addr = 0; /* forget address */ |
| 1388 | while (dc->dc_oq.ifq_len) /* drop pending data */ |
| 1389 | { |
| 1390 | IF_DEQUEUE(&dc->dc_oq, m); |
| 1391 | m_freem(m); |
| 1392 | } |
| 1393 | dc++; |
| 1394 | } |
| 1395 | break; |
| 1396 | |
| 1397 | case ANSWER: /* call answered */ |
| 1398 | lcn = p[1] / 2; |
| 1399 | dc = &(ds->ddn_cb[lcn]); |
| 1400 | if (dc->dc_state == LC_CALL_PENDING) /* if a call pending */ |
| 1401 | { |
| 1402 | dc->dc_state = LC_DATA_IDLE; /* set state */ |
| 1403 | dc->dc_timer = TMO_DATA_IDLE; /* start timer */ |
| 1404 | ddn_start(ds, dc); /* try to send data */ |
| 1405 | } |
| 1406 | break; |
| 1407 | |
| 1408 | case RING: /* incoming call */ |
| 1409 | for(lcn = NDDNCH; lcn > 0; lcn--) /* search LCN's */ |
| 1410 | { |
| 1411 | if (ds->ddn_cb[lcn].dc_state == LC_IDLE) /* unused? */ |
| 1412 | break; |
| 1413 | } |
| 1414 | |
| 1415 | if (lcn && decode_ring(p)) /* if a free LCN found */ |
| 1416 | /* and ring looks ok */ |
| 1417 | { |
| 1418 | dc = &(ds->ddn_cb[lcn]); |
| 1419 | dc->dc_inaddr.s_addr = convert_x25_addr(cb_calling_addr); |
| 1420 | dc->dc_state = LC_DATA_IDLE; /* set state */ |
| 1421 | dc->dc_timer = TMO_DATA_IDLE; /* start timer */ |
| 1422 | send_supr(ds, ANSWER, lcn * 2, (int)p[2]); /* send answer */ |
| 1423 | } |
| 1424 | else /* if no free LCN's */ |
| 1425 | { |
| 1426 | send_supr(ds, CLEARVC, (int)p[2], 0); /* clear call */ |
| 1427 | } |
| 1428 | break; |
| 1429 | |
| 1430 | case CLEARLC: /* clear by LCN */ |
| 1431 | lcn = p[1] / 2; /* get LCN */ |
| 1432 | dc = &(ds->ddn_cb[lcn]); |
| 1433 | if (dc->dc_state != LC_CLR_PENDING) /* if no clear pending */ |
| 1434 | { |
| 1435 | send_supr(ds, CLEARLC, (int)p[1], 0); /* ack the clear */ |
| 1436 | } |
| 1437 | dc->dc_state = LC_IDLE; /* set state */ |
| 1438 | dc->dc_timer = TMO_OFF; /* stop timer */ |
| 1439 | dc->dc_inaddr.s_addr = 0; /* forget address */ |
| 1440 | while (dc->dc_oq.ifq_len) /* drop pending data */ |
| 1441 | { |
| 1442 | IF_DEQUEUE(&dc->dc_oq, m); |
| 1443 | m_freem(m); |
| 1444 | } |
| 1445 | break; |
| 1446 | |
| 1447 | case CLEARVC: /* clear by VCN */ |
| 1448 | send_supr(ds, CLEARVC, (int)p[1], 0); /* send clear ack */ |
| 1449 | break; |
| 1450 | |
| 1451 | case RESET: /* X25 reset */ |
| 1452 | send_supr(ds, RESET_ACK, (int)p[1], 0); /* send reset ack */ |
| 1453 | printf("X25 RESET on lcn = %d\n", p[1] / 2); /* log it */ |
| 1454 | break; |
| 1455 | |
| 1456 | case INTERRUPT: /* X25 interrupt */ |
| 1457 | printf("X25 INTERRUPT on lcn = %d, code = %d\n", /* log it */ |
| 1458 | p[1] / 2, p[2]); |
| 1459 | break; |
| 1460 | |
| 1461 | default: |
| 1462 | printf("ddn%d: supervisor error, code=%x\n", |
| 1463 | ds->ddn_if.if_unit, p[0]); |
| 1464 | } |
| 1465 | } |
| 1466 | \f |
| 1467 | |
| 1468 | /***********************************************************************\ |
| 1469 | * decode_ring() * |
| 1470 | ************************************************************************* |
| 1471 | * * |
| 1472 | * This routine parses and validates the incoming call msg. * |
| 1473 | * * |
| 1474 | \***********************************************************************/ |
| 1475 | |
| 1476 | static boolean decode_ring(p) |
| 1477 | register u_char *p; |
| 1478 | { |
| 1479 | register int cnt; |
| 1480 | |
| 1481 | #ifdef DDNDEBUG |
| 1482 | if (ddn_debug > 3) |
| 1483 | { |
| 1484 | printf("decode_ring()\n"); |
| 1485 | } |
| 1486 | #endif DDNDEBUG |
| 1487 | |
| 1488 | |
| 1489 | p += 3; /* skip to cmnd ext length */ |
| 1490 | if (*p++ < 5) /* is count appropriate */ |
| 1491 | return(0); /* return false if not */ |
| 1492 | |
| 1493 | /* called address */ |
| 1494 | if ((cnt = *p + 1) > 16) /* is called addr len legal? */ |
| 1495 | return(0); /* return false if not */ |
| 1496 | bcopy((caddr_t)p, (caddr_t)cb_called_addr, (unsigned)cnt); /* copy field */ |
| 1497 | p += cnt; |
| 1498 | |
| 1499 | /* calling address */ |
| 1500 | if ((cnt = *p + 1) > 16) /* is calling addr len legal? */ |
| 1501 | return(0); /* return false if not */ |
| 1502 | bcopy((caddr_t)p, (caddr_t)cb_calling_addr, (unsigned)cnt); /* copy field */ |
| 1503 | p += cnt; |
| 1504 | |
| 1505 | /* protocol part of user data */ |
| 1506 | if ((cnt = *p + 1) > 5) /* is protocol len legal? */ |
| 1507 | return(0); /* return false if not */ |
| 1508 | bcopy((caddr_t)p, (caddr_t)cb_protocol, (unsigned)cnt); /* copy field */ |
| 1509 | p += cnt; |
| 1510 | |
| 1511 | /* facilities */ |
| 1512 | if ((cnt = *p + 1) > 64) /* is facilities len legal? */ |
| 1513 | return(0); /* return false if not */ |
| 1514 | bcopy((caddr_t)p, (caddr_t)cb_facilities, (unsigned)cnt); /* copy field */ |
| 1515 | p += cnt; |
| 1516 | |
| 1517 | /* ignore rest of user data for now */ |
| 1518 | |
| 1519 | if ((cb_protocol[0] == 0) || (cb_protocol[1] != X25_PROTO_IP)) |
| 1520 | return(0); /* bad if not IP */ |
| 1521 | |
| 1522 | return(1); /* looks ok */ |
| 1523 | } |
| 1524 | \f |
| 1525 | |
| 1526 | /***********************************************************************\ |
| 1527 | * clear_lcn() * |
| 1528 | ************************************************************************* |
| 1529 | * * |
| 1530 | * This routine clears an X25 circuit and releases any buffers * |
| 1531 | * queued for transmission. * |
| 1532 | * * |
| 1533 | \***********************************************************************/ |
| 1534 | |
| 1535 | static void clear_lcn(ds, dc) |
| 1536 | struct ddn_softc *ds; |
| 1537 | struct ddn_cb *dc; |
| 1538 | { |
| 1539 | register struct mbuf *m; |
| 1540 | |
| 1541 | #ifdef DDNDEBUG |
| 1542 | if (ddn_debug > 3) |
| 1543 | { |
| 1544 | printf("clear_lcn(%d)\n", dc->dc_lcn); |
| 1545 | } |
| 1546 | #endif DDNDEBUG |
| 1547 | |
| 1548 | dc->dc_state = LC_CLR_PENDING; /* set state */ |
| 1549 | dc->dc_timer = TMO_CLR_PENDING; /* start clear timer */ |
| 1550 | dc->dc_inaddr.s_addr = 0; /* clear associated address */ |
| 1551 | while (dc->dc_oq.ifq_len) /* drop any pending data */ |
| 1552 | { |
| 1553 | IF_DEQUEUE(&dc->dc_oq, m); |
| 1554 | m_freem(m); |
| 1555 | } |
| 1556 | send_supr(ds, CLEARLC, (int)dc->dc_lcn * 2, 0); /* send clear msg */ |
| 1557 | } |
| 1558 | \f |
| 1559 | |
| 1560 | /***********************************************************************\ |
| 1561 | * send_restart() * |
| 1562 | ************************************************************************* |
| 1563 | * * |
| 1564 | * This routine marks all LCNs as being in a restarting state * |
| 1565 | * and sends a restart command to X25. * |
| 1566 | * * |
| 1567 | \***********************************************************************/ |
| 1568 | |
| 1569 | static void send_restart(ds) |
| 1570 | struct ddn_softc *ds; |
| 1571 | { |
| 1572 | register struct ddn_cb *dc; |
| 1573 | register int lcn; |
| 1574 | struct mbuf *m; |
| 1575 | |
| 1576 | #ifdef DDNDEBUG |
| 1577 | if (ddn_debug > 1) |
| 1578 | { |
| 1579 | printf("send_restart()\n"); |
| 1580 | } |
| 1581 | #endif DDNDEBUG |
| 1582 | dc = ds->ddn_cb; |
| 1583 | for(lcn = 0; lcn <= NDDNCH; lcn++) /* for all LCN's */ |
| 1584 | { |
| 1585 | dc->dc_state = LC_RESTART; /* set state */ |
| 1586 | dc->dc_timer = TMO_RESTART; /* start restart timeout */ |
| 1587 | dc->dc_inaddr.s_addr = 0; /* forget address */ |
| 1588 | while (dc->dc_oq.ifq_len) /* drop any pending data */ |
| 1589 | { |
| 1590 | IF_DEQUEUE(&dc->dc_oq, m); |
| 1591 | m_freem(m); |
| 1592 | } |
| 1593 | dc++; |
| 1594 | } |
| 1595 | |
| 1596 | send_supr(ds, RESTART, 0, 0); /* send restart msg */ |
| 1597 | } |
| 1598 | \f |
| 1599 | |
| 1600 | /***********************************************************************\ |
| 1601 | * send_supr() * |
| 1602 | ************************************************************************* |
| 1603 | * * |
| 1604 | * This routine is used to send short (4 bytes only) supervisor * |
| 1605 | * commands. * |
| 1606 | * * |
| 1607 | \***********************************************************************/ |
| 1608 | |
| 1609 | static void send_supr(ds, cmd, p1, p2) |
| 1610 | struct ddn_softc *ds; |
| 1611 | int cmd, p1, p2; |
| 1612 | { |
| 1613 | struct mbuf *m; |
| 1614 | register u_char *cp; |
| 1615 | |
| 1616 | #ifdef DDNDEBUG |
| 1617 | if (ddn_debug > 6) |
| 1618 | { |
| 1619 | printf("send_supr(): %x %x %x\n", cmd, p1, p2); |
| 1620 | } |
| 1621 | #endif DDNDEBUG |
| 1622 | |
| 1623 | MGET(m, M_DONTWAIT, MT_DATA); |
| 1624 | |
| 1625 | if (m == 0) |
| 1626 | { |
| 1627 | printf("ddn%d: failed to get supr msg bfr!\n", ds->ddn_if.if_unit); |
| 1628 | return; |
| 1629 | } |
| 1630 | |
| 1631 | cp = mtod(m, u_char *); |
| 1632 | |
| 1633 | /* build supervisor message */ |
| 1634 | |
| 1635 | *cp++ = (byte)cmd; |
| 1636 | *cp++ = (byte)p1; |
| 1637 | *cp++ = (byte)p2; |
| 1638 | *cp++ = 0; |
| 1639 | |
| 1640 | m->m_len = 4; |
| 1641 | |
| 1642 | IF_ENQUEUE(&(ds->ddn_cb[0].dc_oq), m); |
| 1643 | ddn_start(ds, &(ds->ddn_cb[0])); |
| 1644 | |
| 1645 | } |
| 1646 | \f |
| 1647 | |
| 1648 | #ifdef DDNDEBUG |
| 1649 | |
| 1650 | /***********************************************************************\ |
| 1651 | * prt_addr() * |
| 1652 | ************************************************************************* |
| 1653 | * * |
| 1654 | * This routine is used to print internet addresses in the * |
| 1655 | * standard A.B.C.D format. * |
| 1656 | * * |
| 1657 | \***********************************************************************/ |
| 1658 | |
| 1659 | static void prt_addr(addr) |
| 1660 | struct in_addr addr; |
| 1661 | { |
| 1662 | printf("%d.%d.%d.%d", addr.s_net, addr.s_host, addr.s_lh, addr.s_impno); |
| 1663 | } |
| 1664 | |
| 1665 | /***********************************************************************\ |
| 1666 | * prt_bytes() * |
| 1667 | ************************************************************************* |
| 1668 | * * |
| 1669 | * This routine is used to print a string of bytes in hex. * |
| 1670 | * * |
| 1671 | \***********************************************************************/ |
| 1672 | |
| 1673 | static void prt_bytes(bp, cnt) |
| 1674 | u_char *bp; |
| 1675 | int cnt; |
| 1676 | { |
| 1677 | while(cnt--) |
| 1678 | { |
| 1679 | printf(" %x", *bp++ & 0xff); |
| 1680 | } |
| 1681 | } |
| 1682 | |
| 1683 | #endif DDNDEBUG |
| 1684 | |
| 1685 | #endif NDDN |