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