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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 | /* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (C) Dirk Husemann, Computer Science Department IV, * University of Erlangen-Nuremberg, Germany, 1990, 1991, 1992 * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Dirk Husemann and the Computer Science Department (IV) of * the University of Erlangen-Nuremberg, Germany. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)llc_var.h 8.1 (Berkeley) 6/10/93 */ #ifdef __STDC__ /* * Forward structure declarations for function prototypes [sic]. */ struct llc; #endif #define NPAIDB_LINK 0 struct npaidbentry { union { /* MAC,DLSAP -> CONS */ struct { struct llc_linkcb *NE_link; struct rtentry *NE_rt; } NE; /* SAP info for unconfigured incoming calls */ struct { u_short SI_class; #define LLC_CLASS_I 0x1 #define LLC_CLASS_II 0x3 #define LLC_CLASS_III 0x4 /* Future */ #define LLC_CLASS_IV 0x7 /* Future */ u_short SI_window; u_short SI_trace; u_short SI_xchxid; void (*SI_input) __P((struct mbuf *)); caddr_t (*SI_ctlinput) __P((int, struct sockaddr *, caddr_t)); } SI; } NESIun; }; #define np_link NESIun.NE.NE_link #define np_rt NESIun.NE.NE_rt #define si_class NESIun.SI.SI_class #define si_window NESIun.SI.SI_window #define si_trace NESIun.SI.SI_trace #define si_xchxid NESIun.SI.SI_xchxid #define si_input NESIun.SI.SI_input #define si_ctlinput NESIun.SI.SI_ctlinput #define NPDL_SAPNETMASK 0x7e /* * Definitions for accessing bitfields/bitslices inside * LLC2 headers */ struct bitslice { unsigned int bs_mask; unsigned int bs_shift; }; #define i_z 0 #define i_ns 1 #define i_pf 0 #define i_nr 1 #define s_oz 2 #define s_selector 3 #define s_pf 0 #define s_nr 1 #define u_bb 2 #define u_select_other 3 #define u_pf 4 #define u_select 5 #define f_vs 1 #define f_cr 0 #define f_vr 1 #define f_wxyzv 6 #define LLCGBITS(Arg, Index) (((Arg) & llc_bitslice[(Index)].bs_mask) >> llc_bitslice[(Index)].bs_shift) #define LLCSBITS(Arg, Index, Val) (Arg) |= (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask) #define LLCCSBITS(Arg, Index, Val) (Arg) = (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask) extern struct bitslice llc_bitslice[]; #define LLC_CMD 0 #define LLC_RSP 1 #define LLC_MAXCMDRSP 2 /* * LLC events --- These events may either be frames received from the * remote LLC DSAP, request from the network layer user, * timer events from llc_timer(), or diagnostic events from * llc_input(). */ /* LLC frame types */ #define LLCFT_INFO 0 * LLC_MAXCMDRSP #define LLCFT_RR 1 * LLC_MAXCMDRSP #define LLCFT_RNR 2 * LLC_MAXCMDRSP #define LLCFT_REJ 3 * LLC_MAXCMDRSP #define LLCFT_DM 4 * LLC_MAXCMDRSP #define LLCFT_SABME 5 * LLC_MAXCMDRSP #define LLCFT_DISC 6 * LLC_MAXCMDRSP #define LLCFT_UA 7 * LLC_MAXCMDRSP #define LLCFT_FRMR 8 * LLC_MAXCMDRSP #define LLCFT_UI 9 * LLC_MAXCMDRSP #define LLCFT_XID 10 * LLC_MAXCMDRSP #define LLCFT_TEST 11 * LLC_MAXCMDRSP /* LLC2 timer events */ #define LLC_ACK_TIMER_EXPIRED 12 * LLC_MAXCMDRSP #define LLC_P_TIMER_EXPIRED 13 * LLC_MAXCMDRSP #define LLC_REJ_TIMER_EXPIRED 14 * LLC_MAXCMDRSP #define LLC_BUSY_TIMER_EXPIRED 15 * LLC_MAXCMDRSP /* LLC2 diagnostic events */ #define LLC_INVALID_NR 16 * LLC_MAXCMDRSP #define LLC_INVALID_NS 17 * LLC_MAXCMDRSP #define LLC_BAD_PDU 18 * LLC_MAXCMDRSP #define LLC_LOCAL_BUSY_DETECTED 19 * LLC_MAXCMDRSP #define LLC_LOCAL_BUSY_CLEARED 20 * LLC_MAXCMDRSP /* Network layer user requests */ /* * NL_CONNECT_REQUEST --- The user has requested that a data link connection * be established with a remote LLC DSAP. */ #define NL_CONNECT_REQUEST 21 * LLC_MAXCMDRSP /* * NL_CONNECT_RESPONSE --- The user has accepted the data link connection. */ #define NL_CONNECT_RESPONSE 22 * LLC_MAXCMDRSP /* * NL_RESET_REQUEST --- The user has requested that the data link with the * remote LLC DSAP be reset. */ #define NL_RESET_REQUEST 23 * LLC_MAXCMDRSP /* * NL_RESET_RESPONSE --- The user has accepted the reset of the data link * connection. */ #define NL_RESET_RESPONSE 24 * LLC_MAXCMDRSP /* * NL_DISCONNECT_REQUEST --- The user has requested that the data link * connection with remote LLC DSAP be terminated. */ #define NL_DISCONNECT_REQUEST 25 * LLC_MAXCMDRSP /* * NL_DATA_REQUEST --- The user has requested that a data unit be sent ot the * remote LLC DSAP. */ #define NL_DATA_REQUEST 26 * LLC_MAXCMDRSP /* * NL_INITIATE_PF_CYCLE --- The local LLC wants to initiate a P/F cycle. */ #define NL_INITIATE_PF_CYCLE 27 * LLC_MAXCMDRSP /* * NL_LOCAL_BUSY_DETECTED --- The local entity has encountered a busy condition */ #define NL_LOCAL_BUSY_DETECTED 28 * LLC_MAXCMDRSP #define LLCFT_NONE 255 /* return message from state handlers */ /* * LLC_CONNECT_INDICATION --- Inform the user that a connection has been * requested by a remote LLC SSAP. */ #define LLC_CONNECT_INDICATION 1 /* * LLC_CONNECT_CONFIRM --- The connection service component indicates that the * remote network entity has accepted the connection. */ #define LLC_CONNECT_CONFIRM 2 /* * LLC_DISCONNECT_INDICATION --- Inform the user that the remote network * entity has intiated disconnection of the data * link connection. */ #define LLC_DISCONNECT_INDICATION 3 /* * LLC_RESET_CONFIRM --- The connection service component indicates that the * remote network entity has accepted the reset. */ #define LLC_RESET_CONFIRM 4 /* * LLC_RESET_INDICATION_REMOTE --- The remote network entity or remote peer * has initiated a reset of the data link * connection. */ #define LLC_RESET_INDICATION_REMOTE 5 /* * LLC_RESET_INDICATION_LOCAL --- The local LLC has determined that the data * link connection is in need of * reinitialization. */ #define LLC_RESET_INDICATION_LOCAL 6 /* * LLC_FRMR_RECEIVED --- The local connection service component has received a * FRMR response PDU. */ #define LLC_FRMR_RECEIVED 7 /* * LLC_FRMR_SENT --- The local connection component has received an ivalid * PDU, and has sent a FRMR response PDU. */ #define LLC_FRMR_SENT 8 /* * LLC_DATA_INDICATION --- The connection service component passes the data * unit from the received I PDU to the user. */ #define LLC_DATA_INDICATION 9 /* * LLC_REMOTE_NOT_BUSY --- The remote LLC DSAP is no longer busy. The local * connection service component will now accept a * DATA_REQUEST. */ #define LLC_REMOTE_NOT_BUSY 10 /* * LLC_REMOTE_BUSY --- The remote LLC DSAP is busy. The local connection * service component will not accept a DATA_REQUEST. */ #define LLC_REMOTE_BUSY 11 /* Internal return code */ #define LLC_PASSITON 255 #define INFORMATION_CONTROL 0x00 #define SUPERVISORY_CONTROL 0x02 #define UNUMBERED_CONTROL 0x03 /* * Other necessary definitions */ #define LLC_MAX_SEQUENCE 128 #define LLC_MAX_WINDOW 127 #define LLC_WINDOW_SIZE 7 /* * Don't we love this one? CCITT likes its bits 8=) */ #define NLHDRSIZEGUESS 3 /* * LLC control block */ struct llc_linkcb { struct llccb_q { struct llccb_q *q_forw; /* admin chain */ struct llccb_q *q_backw; } llcl_q; struct npaidbentry *llcl_sapinfo; /* SAP information */ struct sockaddr_dl llcl_addr; /* link snpa address */ struct rtentry *llcl_nlrt; /* layer 3 -> LLC */ struct rtentry *llcl_llrt; /* LLC -> layer 3 */ struct ifnet *llcl_if; /* our interface */ caddr_t llcl_nlnext; /* cb for network layer */ struct mbuf *llcl_writeqh; /* Write queue head */ struct mbuf *llcl_writeqt; /* Write queue tail */ struct mbuf **llcl_output_buffers; short llcl_timers[6]; /* timer array */ long llcl_timerflags; /* flags signalling running timers */ int (*llcl_statehandler) __P((struct llc_linkcb *, struct llc *, int, int, int)); int llcl_P_flag; int llcl_F_flag; int llcl_S_flag; int llcl_DATA_flag; int llcl_REMOTE_BUSY_flag; int llcl_DACTION_flag; /* delayed action */ int llcl_retry; /* * The following components deal --- in one way or the other --- * with the LLC2 window. Indicated by either [L] or [W] is the * domain of the specific component: * * [L] The domain is 0--LLC_MAX_WINDOW * [W] The domain is 0--llcl_window */ short llcl_vr; /* next to receive [L] */ short llcl_vs; /* next to send [L] */ short llcl_nr_received; /* next frame to b ack'd [L] */ short llcl_freeslot; /* next free slot [W] */ short llcl_projvs; /* V(S) associated with freeslot */ short llcl_slotsfree; /* free slots [W] */ short llcl_window; /* window size */ /* * In llcl_frmrinfo we jot down the last frmr info field, which we * need to do as we need to be able to resend it in the ERROR state. */ struct frmrinfo llcl_frmrinfo; /* last FRMR info field */ }; #define llcl_frmr_pdu0 llcl_frmrinfo.rej_pdu_0 #define llcl_frmr_pdu1 llcl_frmrinfo.rej_pdu_1 #define llcl_frmr_control llcl_frmrinfo.frmr_control #define llcl_frmr_control_ext llcl_frmrinfo.frmr_control_ext #define llcl_frmr_cause llcl_frmrinfo.frmr_cause #define LQNEXT(l) (struct llc_linkcb *)((l)->llcl_q.q_forw) #define LQEMPTY (llccb_q.q_forw == &llccb_q) #define LQFIRST (struct llc_linkcb *)(llccb_q.q_forw) #define LQVALID(l) (!((struct llccb_q *)(l) == &llccb_q)) #define LLC_ENQUEUE(l, m) if ((l)->llcl_writeqh == NULL) { \ (l)->llcl_writeqh = (m); \ (l)->llcl_writeqt = (m); \ } else { \ (l)->llcl_writeqt->m_nextpkt = (m); \ (l)->llcl_writeqt = (m); \ } #define LLC_DEQUEUE(l, m) if ((l)->llcl_writeqh == NULL) \ (m) = NULL; \ else { \ (m) = (l)->llcl_writeqh; \ (l)->llcl_writeqh = (l)->llcl_writeqh->m_nextpkt; \ } #define LLC_SETFRAME(l, m) { \ if ((l)->llcl_slotsfree > 0) { \ (l)->llcl_slotsfree--; \ (l)->llcl_output_buffers[(l)->llcl_freeslot] = (m); \ (l)->llcl_freeslot = ((l)->llcl_freeslot+1) % (l)->llcl_window; \ LLC_INC((l)->llcl_projvs); \ } \ } /* * handling of sockaddr_dl's */ #define LLADDRLEN(s) ((s)->sdl_alen + (s)->sdl_nlen) #define LLSAPADDR(s) ((s)->sdl_data[LLADDRLEN(s)-1] & 0xff) #define LLSAPLOC(s, if) ((s)->sdl_nlen + (if)->if_addrlen) struct sdl_hdr { struct sockaddr_dl sdlhdr_dst; struct sockaddr_dl sdlhdr_src; long sdlhdr_len; }; #define LLC_GETHDR(f,m) { \ struct mbuf *_m = (struct mbuf *) (m); \ if (_m) { \ M_PREPEND(_m, LLC_ISFRAMELEN, M_DONTWAIT); \ bzero(mtod(_m, caddr_t), LLC_ISFRAMELEN); \ } else { \ MGETHDR (_m, M_DONTWAIT, MT_HEADER); \ if (_m != NULL) { \ _m->m_pkthdr.len = _m->m_len = LLC_UFRAMELEN; \ _m->m_next = _m->m_act = NULL; \ bzero(mtod(_m, caddr_t), LLC_UFRAMELEN); \ } else return; \ } \ (m) = _m; \ (f) = mtod(m, struct llc *); \ } #define LLC_NEWSTATE(l, LLCstate) (l)->llcl_statehandler = llc_state_##LLCstate #define LLC_STATEEQ(l, LLCstate) ((l)->llcl_statehandler == llc_state_##LLCstate ? 1 : 0) #define LLC_ACK_SHIFT 0 #define LLC_P_SHIFT 1 #define LLC_BUSY_SHIFT 2 #define LLC_REJ_SHIFT 3 #define LLC_AGE_SHIFT 4 #define LLC_DACTION_SHIFT 5 #define LLC_TIMER_NOTRUNNING 0 #define LLC_TIMER_RUNNING 1 #define LLC_TIMER_EXPIRED 2 #define LLC_STARTTIMER(l, LLCtimer) { \ (l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = llc_##LLCtimer##_timer; \ (l)->llcl_timerflags |= (1<<LLC_##LLCtimer##_SHIFT); \ } #define LLC_STOPTIMER(l, LLCtimer) { \ (l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = 0; \ (l)->llcl_timerflags &= ~(1<<LLC_##LLCtimer##_SHIFT); \ } #define LLC_AGETIMER(l, LLCtimer) if ((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] > 0) \ (l)->llcl_timers[LLC_##LLCtimer##_SHIFT]--; #define LLC_TIMERXPIRED(l, LLCtimer) \ (((l)->llcl_timerflags & (1<<LLC_##LLCtimer##_SHIFT)) ? \ (((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] == 0 ) ? \ LLC_TIMER_EXPIRED : LLC_TIMER_RUNNING) : LLC_TIMER_NOTRUNNING) #define FOR_ALL_LLC_TIMERS(t) for ((t) = LLC_ACK_SHIFT; (t) < LLC_AGE_SHIFT; (t)++) #define LLC_SETFLAG(l, LLCflag, v) (l)->llcl_##LLCflag##_flag = (v) #define LLC_GETFLAG(l, LLCflag) (l)->llcl_##LLCflag##_flag #define LLC_RESETCOUNTER(l) { \ (l)->llcl_vs = (l)->llcl_vr = (l)->llcl_retry = 0; \ llc_resetwindow((l)); \ } /* * LLC2 macro definitions */ #define LLC_START_ACK_TIMER(l) LLC_STARTTIMER((l), ACK) #define LLC_STOP_ACK_TIMER(l) LLC_STOPTIMER((l), ACK) #define LLC_START_REJ_TIMER(l) LLC_STARTTIMER((l), REJ) #define LLC_STOP_REJ_TIMER(l) LLC_STOPTIMER((l), REJ) #define LLC_START_P_TIMER(l) { \ LLC_STARTTIMER((l), P); \ if (LLC_GETFLAG((l), P) == 0) \ (l)->llcl_retry = 0; \ LLC_SETFLAG((l), P, 1); \ } #define LLC_STOP_P_TIMER(l) { \ LLC_STOPTIMER((l), P); \ LLC_SETFLAG((l), P, 0); \ } #define LLC_STOP_ALL_TIMERS(l) { \ LLC_STOPTIMER((l), ACK); \ LLC_STOPTIMER((l), REJ); \ LLC_STOPTIMER((l), BUSY); \ LLC_STOPTIMER((l), P); \ } #define LLC_INC(i) (i) = ((i)+1) % LLC_MAX_SEQUENCE #define LLC_NR_VALID(l, nr) ((l)->llcl_vs < (l)->llcl_nr_received ? \ (((nr) >= (l)->llcl_nr_received) || \ ((nr) <= (l)->llcl_vs) ? 1 : 0) : \ (((nr) <= (l)->llcl_vs) && \ ((nr) >= (l)->llcl_nr_received) ? 1 : 0)) #define LLC_UPDATE_P_FLAG(l, cr, pf) { \ if ((cr) == LLC_RSP && (pf) == 1) { \ LLC_SETFLAG((l), P, 0); \ LLC_STOPTIMER((l), P); \ } \ } #define LLC_UPDATE_NR_RECEIVED(l, nr) { \ while ((l)->llcl_nr_received != (nr)) { \ struct mbuf *_m; \ register short seq; \ if ((_m = (l)->llcl_output_buffers[seq = llc_seq2slot((l), (l)->llcl_nr_received)])) \ m_freem(_m); \ (l)->llcl_output_buffers[seq] = NULL; \ LLC_INC((l)->llcl_nr_received); \ (l)->llcl_slotsfree++; \ } \ (l)->llcl_retry = 0; \ if ((l)->llcl_slotsfree < (l)->llcl_window) { \ LLC_START_ACK_TIMER(l); \ } else LLC_STOP_ACK_TIMER(l); \ LLC_STARTTIMER((l), DACTION); \ } #define LLC_SET_REMOTE_BUSY(l,a) { \ if (LLC_GETFLAG((l), REMOTE_BUSY) == 0) { \ LLC_SETFLAG((l), REMOTE_BUSY, 1); \ LLC_STARTTIMER((l), BUSY); \ (a) = LLC_REMOTE_BUSY; \ } else { \ (a) = 0; \ } \ } #define LLC_CLEAR_REMOTE_BUSY(l,a) { \ if (LLC_GETFLAG((l), REMOTE_BUSY) == 1) { \ LLC_SETFLAG((l), REMOTE_BUSY, 1); \ LLC_STOPTIMER((l), BUSY); \ if (LLC_STATEEQ((l), NORMAL) || \ LLC_STATEEQ((l), REJECT) || \ LLC_STATEEQ((l), BUSY)) \ llc_resend((l), LLC_CMD, 0); \ (a) = LLC_REMOTE_NOT_BUSY; \ } else { \ (a) = 0; \ } \ } #define LLC_DACKCMD 0x1 #define LLC_DACKCMDPOLL 0x2 #define LLC_DACKRSP 0x3 #define LLC_DACKRSPFINAL 0x4 #define LLC_SENDACKNOWLEDGE(l, cmd, pf) { \ if ((cmd) == LLC_CMD) { \ LLC_SETFLAG((l), DACTION, ((pf) == 0 ? LLC_DACKCMD : LLC_DACKCMDPOLL)); \ } else { \ LLC_SETFLAG((l), DACTION, ((pf) == 0 ? LLC_DACKRSP : LLC_DACKRSPFINAL)); \ } \ } #define LLC_FRMR_W (1<<0) #define LLC_FRMR_X (1<<1) #define LLC_FRMR_Y (1<<2) #define LLC_FRMR_Z (1<<3) #define LLC_FRMR_V (1<<4) #define LLC_SETFRMR(l, f, cr, c) { \ if ((f)->llc_control & 0x3) { \ (l)->llcl_frmr_pdu0 = (f)->llc_control; \ (l)->llcl_frmr_pdu1 = 0; \ } else { \ (l)->llcl_frmr_pdu0 = (f)->llc_control; \ (l)->llcl_frmr_pdu1 = (f)->llc_control_ext; \ } \ LLCCSBITS((l)->llcl_frmr_control, f_vs, (l)->llcl_vs); \ LLCCSBITS((l)->llcl_frmr_control_ext, f_cr, (cr)); \ LLCSBITS((l)->llcl_frmr_control_ext, f_vr, (l)->llcl_vr); \ LLCCSBITS((l)->llcl_frmr_cause, f_wxyzv, (c)); \ } /* * LLC tracing levels: * LLCTR_INTERESTING interesting event, we might care to know about * it, but then again, we might not ... * LLCTR_SHOULDKNOW we probably should know about this event * LLCTR_URGENT something has gone utterly wrong ... */ #define LLCTR_INTERESTING 1 #define LLCTR_SHOULDKNOW 2 #define LLCTR_URGENT 3 #ifdef LLCDEBUG #define LLC_TRACE(lp, l, msg) llc_trace((lp), (l), (msg)) #else /* LLCDEBUG */ #define LLC_TRACE(lp, l, msg) /* NOOP */ #endif /* LLCDEBUG */ #define LLC_N2_VALUE 15 /* up to 15 retries */ #define LLC_ACK_TIMER 10 /* 5 secs */ #define LLC_P_TIMER 4 /* 2 secs */ #define LLC_BUSY_TIMER 12 /* 6 secs */ #define LLC_REJ_TIMER 12 /* 6 secs */ #define LLC_AGE_TIMER 40 /* 20 secs */ #define LLC_DACTION_TIMER 2 /* 1 secs */ #if defined (KERNEL) && defined(LLC) extern int llc_n2; extern int llc_ACK_timer; extern int llc_P_timer; extern int llc_REJ_timer; extern int llc_BUSY_timer; extern int llc_AGE_timer; extern int llc_DACTION_timer; extern int af_link_rts_init_done; #define USES_AF_LINK_RTS { \ if (!af_link_rts_init_done) { \ rn_inithead((void **)&rt_tables[AF_LINK], 32); \ af_link_rts_init_done++; \ } \ } struct ifqueue llcintrq; extern struct llccb_q llccb_q; extern char *frame_names[]; /* * Function prototypes */ int sdl_cmp __P((struct sockaddr_dl *, struct sockaddr_dl *)); int sdl_copy __P((struct sockaddr_dl *, struct sockaddr_dl *)); int sdl_swapaddr __P((struct sockaddr_dl *, struct sockaddr_dl *)); int sdl_checkaddrif __P((struct ifnet *, struct sockaddr_dl *)); int sdl_setaddrif __P((struct ifnet *, u_char *, u_char, u_char, struct sockaddr_dl *)); int sdl_sethdrif __P((struct ifnet *, u_char *, u_char, u_char *, u_char, u_char, struct sdl_hdr *)); struct npaidbentry *llc_setsapinfo __P((struct ifnet *, u_char, u_char, struct dllconfig *)); struct npaidbentry *llc_getsapinfo __P((u_char, struct ifnet *)); struct rtentry *npaidb_enrich __P((short, caddr_t, struct sockaddr_dl *)); int npaidb_destroy __P((struct rtentry *)); short llc_seq2slot __P((struct llc_linkcb *, short)); int llc_state_ADM __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_CONN __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_RESET_WAIT __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_RESET_CHECK __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_SETUP __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_RESET __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_D_CONN __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_ERROR __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_NBRAcore __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_NORMAL __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_BUSY __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_REJECT __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_AWAIT __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_AWAIT_BUSY __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_state_AWAIT_REJECT __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_statehandler __P((struct llc_linkcb *, struct llc *, int, int, int)); int llc_init __P((void)); struct llc_linkcb *llc_newlink __P((struct sockaddr_dl *, struct ifnet *, struct rtentry *, caddr_t, struct rtentry *)); int llc_dellink __P((struct llc_linkcb *)); int llc_anytimersup __P((struct llc_linkcb *)); char * llc_getstatename __P((struct llc_linkcb *)); void llc_link_dump __P((struct llc_linkcb *, const char *)); void llc_trace __P((struct llc_linkcb *, int, const char *)); void llc_resetwindow __P((struct llc_linkcb *)); int llc_decode __P((struct llc *, struct llc_linkcb *)); void llc_timer __P((void)); void llcintr __P((void)); int llc_input __P((struct llc_linkcb *, struct mbuf *, u_char)); caddr_t llc_ctlinput __P((int, struct sockaddr *, caddr_t)); int llc_output __P((struct llc_linkcb *, struct mbuf *)); void llc_start __P((struct llc_linkcb *)); int llc_send __P((struct llc_linkcb *, int, int, int)); int llc_resend __P((struct llc_linkcb *, int, int)); int llc_rawsend __P((struct llc_linkcb *, struct mbuf *, struct llc *, int, int, int, int)); int cons_rtrequest __P((int, struct rtentry *, struct sockaddr *)); int x25_llcglue __P((int, struct sockaddr *)); #endif |