160786Sps/*- 260786Sps * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 360786Sps * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 460786Sps * Internet Initiative Japan, Inc (IIJ) 560786Sps * All rights reserved. 660786Sps * 760786Sps * Redistribution and use in source and binary forms, with or without 860786Sps * modification, are permitted provided that the following conditions 960786Sps * are met: 1060786Sps * 1. Redistributions of source code must retain the above copyright 1160786Sps * notice, this list of conditions and the following disclaimer. 1260786Sps * 2. Redistributions in binary form must reproduce the above copyright 1360786Sps * notice, this list of conditions and the following disclaimer in the 1460786Sps * documentation and/or other materials provided with the distribution. 1589019Sps * 1660786Sps * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17170256Sdelphij * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1860786Sps * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1960786Sps * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2060786Sps * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2160786Sps * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2260786Sps * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2360786Sps * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2460786Sps * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25161475Sdelphij * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26161475Sdelphij * SUCH DAMAGE. 27161475Sdelphij * 28161475Sdelphij * $FreeBSD: releng/11.0/usr.sbin/ppp/hdlc.c 134789 2004-09-05 01:46:52Z brian $ 29161475Sdelphij */ 3060786Sps 3160786Sps#include <sys/param.h> 3260786Sps#include <sys/un.h> 33191930Sdelphij 34191930Sdelphij#include <stdarg.h> 3560786Sps#include <stdio.h> 3660786Sps#include <string.h> 3760786Sps#include <termios.h> 3860786Sps 3960786Sps#include "defs.h" 4060786Sps#include "layer.h" 4160786Sps#include "command.h" 4260786Sps#include "mbuf.h" 4360786Sps#include "log.h" 4460786Sps#include "timer.h" 4560786Sps#include "fsm.h" 46128345Stjr#include "lqr.h" 4760786Sps#include "hdlc.h" 4860786Sps#include "throughput.h" 4960786Sps#include "auth.h" 5060786Sps#include "lcp.h" 5160786Sps#include "async.h" 5260786Sps#include "ccp.h" 5360786Sps#include "link.h" 5460786Sps#include "descriptor.h" 5560786Sps#include "chap.h" 5660786Sps#include "physical.h" 57161475Sdelphij#include "prompt.h" 58161475Sdelphij#include "chat.h" 59161475Sdelphij#include "mp.h" 60161475Sdelphij#include "cbcp.h" 61172468Sdelphij#include "datalink.h" 62161475Sdelphij 63161475Sdelphijstatic u_int16_t const fcstab[256] = { 64161475Sdelphij /* 00 */ 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, 65161475Sdelphij /* 08 */ 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, 66161475Sdelphij /* 10 */ 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, 6760786Sps /* 18 */ 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, 6860786Sps /* 20 */ 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, 6960786Sps /* 28 */ 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 7060786Sps /* 30 */ 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 7160786Sps /* 38 */ 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 7260786Sps /* 40 */ 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 7360786Sps /* 48 */ 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, 7460786Sps /* 50 */ 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, 75128345Stjr /* 58 */ 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, 7660786Sps /* 60 */ 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, 77170256Sdelphij /* 68 */ 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, 78161475Sdelphij /* 70 */ 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 79161475Sdelphij /* 78 */ 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 8060786Sps /* 80 */ 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 8160786Sps /* 88 */ 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 8260786Sps /* 90 */ 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, 8360786Sps /* 98 */ 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, 8460786Sps /* a0 */ 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, 8560786Sps /* a8 */ 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, 8660786Sps /* b0 */ 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, 8760786Sps /* b8 */ 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 8860786Sps /* c0 */ 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 8960786Sps /* c8 */ 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 9060786Sps /* d0 */ 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 9160786Sps /* d8 */ 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 9260786Sps /* e0 */ 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, 9360786Sps /* e8 */ 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, 9460786Sps /* f0 */ 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, 9560786Sps /* f8 */ 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 9660786Sps}; 9760786Sps 9860786Spsvoid 9960786Spshdlc_Init(struct hdlc *hdlc, struct lcp *lcp) 10060786Sps{ 10160786Sps memset(hdlc, '\0', sizeof(struct hdlc)); 10260786Sps hdlc->lqm.owner = lcp; 10360786Sps} 10460786Sps 10560786Sps/* 10660786Sps * HDLC FCS computation. Read RFC 1171 Appendix B and CCITT X.25 section 10760786Sps * 2.27 for further details. 10860786Sps */ 109173682Sdelphiju_short 11060786Spshdlc_Fcs(u_char *cp, size_t len) 11160786Sps{ 11260786Sps u_short fcs = INITFCS; 113128345Stjr 114128345Stjr while (len--) 115128345Stjr fcs = (fcs >> 8) ^ fcstab[(fcs ^ *cp++) & 0xff]; 11660786Sps 11760786Sps return fcs; 11860786Sps} 11960786Sps 12060786Spsstatic inline u_short 12160786SpsHdlcFcsBuf(u_short fcs, struct mbuf *m) 12260786Sps{ 12360786Sps int len; 12460786Sps u_char *pos, *end; 12560786Sps 126128345Stjr len = m_length(m); 127191930Sdelphij pos = MBUF_CTOP(m); 128191930Sdelphij end = pos + m->m_len; 129170256Sdelphij while (len--) { 13060786Sps fcs = (fcs >> 8) ^ fcstab[(fcs ^ *pos++) & 0xff]; 13160786Sps if (pos == end && len) { 13260786Sps m = m->m_next; 13360786Sps pos = MBUF_CTOP(m); 13460786Sps end = pos + m->m_len; 13560786Sps } 13660786Sps } 13760786Sps return (fcs); 13860786Sps} 13960786Sps 14060786Spsstatic struct mbuf * 14160786Spshdlc_LayerPush(struct bundle *bundle __unused, struct link *l __unused, 14260786Sps struct mbuf *bp, int pri __unused, u_short *proto __unused) 14360786Sps{ 14460786Sps struct mbuf *last; 14560786Sps u_char *cp; 14660786Sps u_short fcs; 14760786Sps 14860786Sps m_settype(bp, MB_HDLCOUT); 14960786Sps fcs = HdlcFcsBuf(INITFCS, bp); 15060786Sps fcs = ~fcs; 15160786Sps 15260786Sps for (last = bp; last->m_next; last = last->m_next) 15360786Sps ; 15460786Sps 15560786Sps if (last->m_size - last->m_offset - last->m_len >= 2) { 15660786Sps cp = MBUF_CTOP(last) + last->m_len; 15760786Sps last->m_len += 2; 15860786Sps } else { 15960786Sps struct mbuf *tail = m_get(2, MB_HDLCOUT); 16060786Sps last->m_next = tail; 16160786Sps cp = MBUF_CTOP(tail); 162161475Sdelphij } 16360786Sps 16460786Sps *cp++ = fcs & 0377; /* Low byte first (nothing like consistency) */ 165161475Sdelphij *cp++ = fcs >> 8; 16689019Sps 167161475Sdelphij log_DumpBp(LogHDLC, "hdlc_Output", bp); 16860786Sps 169161475Sdelphij return bp; 17060786Sps} 171191930Sdelphij 17260786Sps/* Check out the latest ``Assigned numbers'' rfc (rfc1700.txt) */ 17360786Spsstatic struct { 17460786Sps u_short from; 17560786Sps u_short to; 17660786Sps const char *name; 17760786Sps} protocols[] = { 178128345Stjr { 0x0001, 0x0001, "Padding Protocol" }, 17960786Sps { 0x0003, 0x001f, "reserved (transparency inefficient)" }, 180128345Stjr { 0x0021, 0x0021, "Internet Protocol" }, 18160786Sps { 0x0023, 0x0023, "OSI Network Layer" }, 18260786Sps { 0x0025, 0x0025, "Xerox NS IDP" }, 18360786Sps { 0x0027, 0x0027, "DECnet Phase IV" }, 18460786Sps { 0x0029, 0x0029, "Appletalk" }, 18560786Sps { 0x002b, 0x002b, "Novell IPX" }, 18660786Sps { 0x002d, 0x002d, "Van Jacobson Compressed TCP/IP" }, 18760786Sps { 0x002f, 0x002f, "Van Jacobson Uncompressed TCP/IP" }, 18860786Sps { 0x0031, 0x0031, "Bridging PDU" }, 18960786Sps { 0x0033, 0x0033, "Stream Protocol (ST-II)" }, 19060786Sps { 0x0035, 0x0035, "Banyan Vines" }, 19160786Sps { 0x0037, 0x0037, "reserved (until 1993)" }, 19260786Sps { 0x0039, 0x0039, "AppleTalk EDDP" }, 19360786Sps { 0x003b, 0x003b, "AppleTalk SmartBuffered" }, 194170256Sdelphij { 0x003d, 0x003d, "Multi-Link" }, 195170256Sdelphij { 0x003f, 0x003f, "NETBIOS Framing" }, 19660786Sps { 0x0041, 0x0041, "Cisco Systems" }, 19760786Sps { 0x0043, 0x0043, "Ascom Timeplex" }, 19860786Sps { 0x0045, 0x0045, "Fujitsu Link Backup and Load Balancing (LBLB)" }, 19960786Sps { 0x0047, 0x0047, "DCA Remote Lan" }, 20060786Sps { 0x0049, 0x0049, "Serial Data Transport Protocol (PPP-SDTP)" }, 20160786Sps { 0x004b, 0x004b, "SNA over 802.2" }, 20260786Sps { 0x004d, 0x004d, "SNA" }, 20360786Sps { 0x004f, 0x004f, "IP6 Header Compression" }, 20460786Sps { 0x0051, 0x0051, "KNX Bridging Data" }, 20589019Sps { 0x0053, 0x0053, "Encryption" }, 20660786Sps { 0x0055, 0x0055, "Individual Link Encryption" }, 20760786Sps { 0x0057, 0x0057, "Internet Protocol V6" }, 20860786Sps { 0x006f, 0x006f, "Stampede Bridging" }, 20960786Sps { 0x0071, 0x0071, "BAP Bandwidth Allocation Protocol" }, 21060786Sps { 0x0073, 0x0073, "MP+ Protocol" }, 21160786Sps { 0x007d, 0x007d, "reserved (Control Escape)" }, 21260786Sps { 0x007f, 0x007f, "reserved (compression inefficient)" }, 21360786Sps { 0x00cf, 0x00cf, "reserved (PPP NLPID)" }, 21460786Sps { 0x00fb, 0x00fb, "compression on single link in multilink group" }, 21560786Sps { 0x00fd, 0x00fd, "1st choice compression" }, 216170256Sdelphij { 0x00ff, 0x00ff, "reserved (compression inefficient)" }, 217170256Sdelphij { 0x0200, 0x02ff, "(compression inefficient)" }, 21860786Sps { 0x0201, 0x0201, "802.1d Hello Packets" }, 219128345Stjr { 0x0203, 0x0203, "IBM Source Routing BPDU" }, 220128345Stjr { 0x0205, 0x0205, "DEC LANBridge100 Spanning Tree" }, 22160786Sps { 0x0207, 0x0207, "Cisco Discovery Protocol" }, 22260786Sps { 0x0209, 0x0209, "Netcs Twin Routing" }, 22360786Sps { 0x0231, 0x0231, "Luxcom" }, 22460786Sps { 0x0233, 0x0233, "Sigma Network Systems" }, 22560786Sps { 0x0235, 0x0235, "Apple Client Server Protocol" }, 22660786Sps { 0x1e00, 0x1eff, "(compression inefficient)" }, 22760786Sps { 0x4001, 0x4001, "Cray Communications Control Protocol" }, 22860786Sps { 0x4003, 0x4003, "CDPD Mobile Network Registration Protocol" }, 22960786Sps { 0x4021, 0x4021, "Stacker LZS" }, 23060786Sps { 0x8001, 0x801f, "Not Used - reserved" }, 23160786Sps { 0x8021, 0x8021, "Internet Protocol Control Protocol" }, 23260786Sps { 0x8023, 0x8023, "OSI Network Layer Control Protocol" }, 23360786Sps { 0x8025, 0x8025, "Xerox NS IDP Control Protocol" }, 23460786Sps { 0x8027, 0x8027, "DECnet Phase IV Control Protocol" }, 23560786Sps { 0x8029, 0x8029, "Appletalk Control Protocol" }, 23660786Sps { 0x802b, 0x802b, "Novell IPX Control Protocol" }, 23760786Sps { 0x802d, 0x802d, "reserved" }, 23860786Sps { 0x802f, 0x802f, "reserved" }, 23960786Sps { 0x8031, 0x8031, "Bridging NCP" }, 24060786Sps { 0x8033, 0x8033, "Stream Protocol Control Protocol" }, 24160786Sps { 0x8035, 0x8035, "Banyan Vines Control Protocol" }, 24260786Sps { 0x8037, 0x8037, "reserved till 1993" }, 24360786Sps { 0x8039, 0x8039, "reserved" }, 24460786Sps { 0x803b, 0x803b, "reserved" }, 24560786Sps { 0x803d, 0x803d, "Multi-Link Control Protocol" }, 24660786Sps { 0x803f, 0x803f, "NETBIOS Framing Control Protocol" }, 24760786Sps { 0x8041, 0x8041, "Cisco Systems Control Protocol" }, 24860786Sps { 0x8043, 0x8043, "Ascom Timeplex" }, 24960786Sps { 0x8045, 0x8045, "Fujitsu LBLB Control Protocol" }, 25089019Sps { 0x8047, 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" }, 25160786Sps { 0x8049, 0x8049, "Serial Data Control Protocol (PPP-SDCP)" }, 25260786Sps { 0x804b, 0x804b, "SNA over 802.2 Control Protocol" }, 25360786Sps { 0x804d, 0x804d, "SNA Control Protocol" }, 254191930Sdelphij { 0x804f, 0x804f, "IP6 Header Compression Control Protocol" }, 25560786Sps { 0x8051, 0x8051, "KNX Bridging Control Protocol" }, 256191930Sdelphij { 0x8053, 0x8053, "Encryption Control Protocol" }, 257191930Sdelphij { 0x8055, 0x8055, "Individual Link Encryption Control Protocol" }, 25860786Sps { 0x8057, 0x8057, "Internet Protocol V6 Control Protocol" }, 25960786Sps { 0x806f, 0x806f, "Stampede Bridging Control Protocol" }, 26060786Sps { 0x8073, 0x8073, "MP+ Control Protocol" }, 26160786Sps { 0x8071, 0x8071, "BACP Bandwidth Allocation Control Protocol" }, 26260786Sps { 0x807d, 0x807d, "Not Used - reserved" }, 263191930Sdelphij { 0x80cf, 0x80cf, "Not Used - reserved" }, 264191930Sdelphij { 0x80fb, 0x80fb, "compression on single link in multilink group control" }, 26560786Sps { 0x80fd, 0x80fd, "Compression Control Protocol" }, 26660786Sps { 0x80ff, 0x80ff, "Not Used - reserved" }, 26760786Sps { 0x8207, 0x8207, "Cisco Discovery Protocol Control" }, 26860786Sps { 0x8209, 0x8209, "Netcs Twin Routing" }, 26989019Sps { 0x8235, 0x8235, "Apple Client Server Protocol Control" }, 27089019Sps { 0xc021, 0xc021, "Link Control Protocol" }, 27160786Sps { 0xc023, 0xc023, "Password Authentication Protocol" }, 27289019Sps { 0xc025, 0xc025, "Link Quality Report" }, 27389019Sps { 0xc027, 0xc027, "Shiva Password Authentication Protocol" }, 27489019Sps { 0xc029, 0xc029, "CallBack Control Protocol (CBCP)" }, 27589019Sps { 0xc081, 0xc081, "Container Control Protocol" }, 27689019Sps { 0xc223, 0xc223, "Challenge Handshake Authentication Protocol" }, 27760786Sps { 0xc225, 0xc225, "RSA Authentication Protocol" }, 27860786Sps { 0xc227, 0xc227, "Extensible Authentication Protocol" }, 27960786Sps { 0xc26f, 0xc26f, "Stampede Bridging Authorization Protocol" }, 28060786Sps { 0xc281, 0xc281, "Proprietary Authentication Protocol" }, 281 { 0xc283, 0xc283, "Proprietary Authentication Protocol" }, 282 { 0xc481, 0xc481, "Proprietary Node ID Authentication Protocol" } 283}; 284 285#define NPROTOCOLS (sizeof protocols/sizeof protocols[0]) 286 287const char * 288hdlc_Protocol2Nam(u_short proto) 289{ 290 unsigned f; 291 292 for (f = 0; f < NPROTOCOLS; f++) 293 if (proto >= protocols[f].from && proto <= protocols[f].to) 294 return protocols[f].name; 295 else if (proto < protocols[f].from) 296 break; 297 return "unrecognised protocol"; 298} 299 300static struct mbuf * 301hdlc_LayerPull(struct bundle *b __unused, struct link *l, struct mbuf *bp, 302 u_short *proto __unused) 303{ 304 struct physical *p = link2physical(l); 305 u_short fcs; 306 int len; 307 308 if (!p) { 309 log_Printf(LogERROR, "Can't Pull a hdlc packet from a logical link\n"); 310 return bp; 311 } 312 313 log_DumpBp(LogHDLC, "hdlc_LayerPull:", bp); 314 315 bp = m_pullup(bp); 316 len = m_length(bp); 317 fcs = hdlc_Fcs(MBUF_CTOP(bp), len); 318 319 log_Printf(LogDEBUG, "%s: hdlc_LayerPull: fcs = %04x (%s)\n", 320 p->link.name, fcs, (fcs == GOODFCS) ? "good" : "BAD!"); 321 322 p->hdlc.lqm.ifInOctets += len + 1; /* plus 1 flag octet! */ 323 324 if (fcs != GOODFCS) { 325 p->hdlc.lqm.ifInErrors++; 326 p->hdlc.stats.badfcs++; 327 m_freem(bp); 328 return NULL; 329 } 330 331 /* Either done here or by the sync layer */ 332 p->hdlc.lqm.lqr.InGoodOctets += len + 1; /* plus 1 flag octet! */ 333 p->hdlc.lqm.ifInUniPackets++; 334 335 if (len < 4) { /* rfc1662 section 4.3 */ 336 m_freem(bp); 337 bp = NULL; 338 } 339 340 bp = m_adj(bp, -2); /* discard the FCS */ 341 m_settype(bp, MB_HDLCIN); 342 343 return bp; 344} 345 346/* Detect a HDLC frame */ 347 348static const struct frameheader { 349 const u_char *data; 350 int len; 351} FrameHeaders[] = { 352 { "\176\377\003\300\041", 5 }, 353 { "\176\377\175\043\300\041", 6 }, 354 { "\176\177\175\043\100\041", 6 }, 355 { "\176\175\337\175\043\300\041", 7 }, 356 { "\176\175\137\175\043\100\041", 7 }, 357 { NULL, 0 } 358}; 359 360int 361hdlc_Detect(u_char const **cp, unsigned n, int issync) 362{ 363 const struct frameheader *fh; 364 const u_char *h; 365 size_t len, cmp; 366 367 while (n) { 368 for (fh = FrameHeaders; fh->len; fh++) { 369 h = issync ? fh->data + 1 : fh->data; 370 len = issync ? fh->len - 1 : fh->len; 371 cmp = n >= len ? len : n; 372 if (memcmp(*cp, h, cmp) == 0) 373 return cmp == len; 374 } 375 n--; 376 (*cp)++; 377 } 378 379 return 0; 380} 381 382int 383hdlc_ReportStatus(struct cmdargs const *arg) 384{ 385 struct hdlc *hdlc = &arg->cx->physical->hdlc; 386 387 prompt_Printf(arg->prompt, "%s HDLC level errors:\n", arg->cx->name); 388 prompt_Printf(arg->prompt, " Bad Frame Check Sequence fields: %u\n", 389 hdlc->stats.badfcs); 390 prompt_Printf(arg->prompt, " Bad address (!= 0x%02x) fields: %u\n", 391 HDLC_ADDR, hdlc->stats.badaddr); 392 prompt_Printf(arg->prompt, " Bad command (!= 0x%02x) fields: %u\n", 393 HDLC_UI, hdlc->stats.badcommand); 394 prompt_Printf(arg->prompt, " Unrecognised protocol fields: %u\n", 395 hdlc->stats.unknownproto); 396 return 0; 397} 398 399static void 400hdlc_ReportTime(void *v) 401{ 402 /* Moan about HDLC errors */ 403 struct hdlc *hdlc = (struct hdlc *)v; 404 405 timer_Stop(&hdlc->ReportTimer); 406 407 if (memcmp(&hdlc->laststats, &hdlc->stats, sizeof hdlc->stats)) { 408 log_Printf(LogPHASE, 409 "%s: HDLC errors -> FCS: %u, ADDR: %u, COMD: %u, PROTO: %u\n", 410 hdlc->lqm.owner->fsm.link->name, 411 hdlc->stats.badfcs - hdlc->laststats.badfcs, 412 hdlc->stats.badaddr - hdlc->laststats.badaddr, 413 hdlc->stats.badcommand - hdlc->laststats.badcommand, 414 hdlc->stats.unknownproto - hdlc->laststats.unknownproto); 415 hdlc->laststats = hdlc->stats; 416 } 417 418 timer_Start(&hdlc->ReportTimer); 419} 420 421void 422hdlc_StartTimer(struct hdlc *hdlc) 423{ 424 timer_Stop(&hdlc->ReportTimer); 425 hdlc->ReportTimer.load = 60 * SECTICKS; 426 hdlc->ReportTimer.arg = hdlc; 427 hdlc->ReportTimer.func = hdlc_ReportTime; 428 hdlc->ReportTimer.name = "hdlc"; 429 timer_Start(&hdlc->ReportTimer); 430} 431 432void 433hdlc_StopTimer(struct hdlc *hdlc) 434{ 435 timer_Stop(&hdlc->ReportTimer); 436} 437 438struct layer hdlclayer = { LAYER_HDLC, "hdlc", hdlc_LayerPush, hdlc_LayerPull }; 439