Adam Green / Mbed 2 deprecated WeatherStation

Web server based weather station using Sparkfun Weather Meters.

Dependencies:   FatFileSystem mbed WeatherMeters SDFileSystem

NetStack/lwip/netif/ppp/ppp.c@1:c7958aa34fa1, 2012-02-25 (annotated)

Committer:
AdamGreen
Date:
Sat Feb 25 03:28:05 2012 +0000
Revision:
1:c7958aa34fa1
Parent:
0:616601bde9fb 
Use published libraries where possible.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AdamGreen 0:616601bde9fb 1 /*****************************************************************************
AdamGreen 0:616601bde9fb 2 * ppp.c - Network Point to Point Protocol program file.
AdamGreen 0:616601bde9fb 3 *
AdamGreen 0:616601bde9fb 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
AdamGreen 0:616601bde9fb 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
AdamGreen 0:616601bde9fb 6 *
AdamGreen 0:616601bde9fb 7 * The authors hereby grant permission to use, copy, modify, distribute,
AdamGreen 0:616601bde9fb 8 * and license this software and its documentation for any purpose, provided
AdamGreen 0:616601bde9fb 9 * that existing copyright notices are retained in all copies and that this
AdamGreen 0:616601bde9fb 10 * notice and the following disclaimer are included verbatim in any
AdamGreen 0:616601bde9fb 11 * distributions. No written agreement, license, or royalty fee is required
AdamGreen 0:616601bde9fb 12 * for any of the authorized uses.
AdamGreen 0:616601bde9fb 13 *
AdamGreen 0:616601bde9fb 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
AdamGreen 0:616601bde9fb 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AdamGreen 0:616601bde9fb 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AdamGreen 0:616601bde9fb 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AdamGreen 0:616601bde9fb 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AdamGreen 0:616601bde9fb 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AdamGreen 0:616601bde9fb 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AdamGreen 0:616601bde9fb 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AdamGreen 0:616601bde9fb 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AdamGreen 0:616601bde9fb 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AdamGreen 0:616601bde9fb 24 *
AdamGreen 0:616601bde9fb 25 ******************************************************************************
AdamGreen 0:616601bde9fb 26 * REVISION HISTORY
AdamGreen 0:616601bde9fb 27 *
AdamGreen 0:616601bde9fb 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
AdamGreen 0:616601bde9fb 29 * Ported to lwIP.
AdamGreen 0:616601bde9fb 30 * 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
AdamGreen 0:616601bde9fb 31 * Original.
AdamGreen 0:616601bde9fb 32 *****************************************************************************/
AdamGreen 0:616601bde9fb 33
AdamGreen 0:616601bde9fb 34 /*
AdamGreen 0:616601bde9fb 35 * ppp_defs.h - PPP definitions.
AdamGreen 0:616601bde9fb 36 *
AdamGreen 0:616601bde9fb 37 * if_pppvar.h - private structures and declarations for PPP.
AdamGreen 0:616601bde9fb 38 *
AdamGreen 0:616601bde9fb 39 * Copyright (c) 1994 The Australian National University.
AdamGreen 0:616601bde9fb 40 * All rights reserved.
AdamGreen 0:616601bde9fb 41 *
AdamGreen 0:616601bde9fb 42 * Permission to use, copy, modify, and distribute this software and its
AdamGreen 0:616601bde9fb 43 * documentation is hereby granted, provided that the above copyright
AdamGreen 0:616601bde9fb 44 * notice appears in all copies. This software is provided without any
AdamGreen 0:616601bde9fb 45 * warranty, express or implied. The Australian National University
AdamGreen 0:616601bde9fb 46 * makes no representations about the suitability of this software for
AdamGreen 0:616601bde9fb 47 * any purpose.
AdamGreen 0:616601bde9fb 48 *
AdamGreen 0:616601bde9fb 49 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
AdamGreen 0:616601bde9fb 50 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
AdamGreen 0:616601bde9fb 51 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
AdamGreen 0:616601bde9fb 52 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
AdamGreen 0:616601bde9fb 53 * OF SUCH DAMAGE.
AdamGreen 0:616601bde9fb 54 *
AdamGreen 0:616601bde9fb 55 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
AdamGreen 0:616601bde9fb 56 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AdamGreen 0:616601bde9fb 57 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
AdamGreen 0:616601bde9fb 58 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
AdamGreen 0:616601bde9fb 59 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
AdamGreen 0:616601bde9fb 60 * OR MODIFICATIONS.
AdamGreen 0:616601bde9fb 61 */
AdamGreen 0:616601bde9fb 62
AdamGreen 0:616601bde9fb 63 /*
AdamGreen 0:616601bde9fb 64 * if_ppp.h - Point-to-Point Protocol definitions.
AdamGreen 0:616601bde9fb 65 *
AdamGreen 0:616601bde9fb 66 * Copyright (c) 1989 Carnegie Mellon University.
AdamGreen 0:616601bde9fb 67 * All rights reserved.
AdamGreen 0:616601bde9fb 68 *
AdamGreen 0:616601bde9fb 69 * Redistribution and use in source and binary forms are permitted
AdamGreen 0:616601bde9fb 70 * provided that the above copyright notice and this paragraph are
AdamGreen 0:616601bde9fb 71 * duplicated in all such forms and that any documentation,
AdamGreen 0:616601bde9fb 72 * advertising materials, and other materials related to such
AdamGreen 0:616601bde9fb 73 * distribution and use acknowledge that the software was developed
AdamGreen 0:616601bde9fb 74 * by Carnegie Mellon University. The name of the
AdamGreen 0:616601bde9fb 75 * University may not be used to endorse or promote products derived
AdamGreen 0:616601bde9fb 76 * from this software without specific prior written permission.
AdamGreen 0:616601bde9fb 77 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AdamGreen 0:616601bde9fb 78 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AdamGreen 0:616601bde9fb 79 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AdamGreen 0:616601bde9fb 80 */
AdamGreen 0:616601bde9fb 81
AdamGreen 0:616601bde9fb 82 #include "lwip/opt.h"
AdamGreen 0:616601bde9fb 83
AdamGreen 0:616601bde9fb 84 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AdamGreen 0:616601bde9fb 85
AdamGreen 0:616601bde9fb 86 #include "lwip/ip.h" /* for ip_input() */
AdamGreen 0:616601bde9fb 87
AdamGreen 0:616601bde9fb 88 #include "ppp.h"
AdamGreen 0:616601bde9fb 89 #include "pppdebug.h"
AdamGreen 0:616601bde9fb 90
AdamGreen 0:616601bde9fb 91 #include "randm.h"
AdamGreen 0:616601bde9fb 92 #include "fsm.h"
AdamGreen 0:616601bde9fb 93 #if PAP_SUPPORT
AdamGreen 0:616601bde9fb 94 #include "pap.h"
AdamGreen 0:616601bde9fb 95 #endif /* PAP_SUPPORT */
AdamGreen 0:616601bde9fb 96 #if CHAP_SUPPORT
AdamGreen 0:616601bde9fb 97 #include "chap.h"
AdamGreen 0:616601bde9fb 98 #endif /* CHAP_SUPPORT */
AdamGreen 0:616601bde9fb 99 #include "ipcp.h"
AdamGreen 0:616601bde9fb 100 #include "lcp.h"
AdamGreen 0:616601bde9fb 101 #include "magic.h"
AdamGreen 0:616601bde9fb 102 #include "auth.h"
AdamGreen 0:616601bde9fb 103 #if VJ_SUPPORT
AdamGreen 0:616601bde9fb 104 #include "vj.h"
AdamGreen 0:616601bde9fb 105 #endif /* VJ_SUPPORT */
AdamGreen 0:616601bde9fb 106 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 107 #include "netif/ppp_oe.h"
AdamGreen 0:616601bde9fb 108 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 109
AdamGreen 0:616601bde9fb 110 #include "lwip/tcpip.h"
AdamGreen 0:616601bde9fb 111 #include "lwip/api.h"
AdamGreen 0:616601bde9fb 112 #include "lwip/snmp.h"
AdamGreen 0:616601bde9fb 113
AdamGreen 0:616601bde9fb 114 #include <string.h>
AdamGreen 0:616601bde9fb 115
AdamGreen 0:616601bde9fb 116 /*************************/
AdamGreen 0:616601bde9fb 117 /*** LOCAL DEFINITIONS ***/
AdamGreen 0:616601bde9fb 118 /*************************/
AdamGreen 0:616601bde9fb 119
AdamGreen 0:616601bde9fb 120 /** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
AdamGreen 0:616601bde9fb 121 * Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
AdamGreen 0:616601bde9fb 122 * Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
AdamGreen 0:616601bde9fb 123 */
AdamGreen 0:616601bde9fb 124 #ifndef PPP_INPROC_MULTITHREADED
AdamGreen 0:616601bde9fb 125 #define PPP_INPROC_MULTITHREADED (NO_SYS==0)
AdamGreen 0:616601bde9fb 126 #endif
AdamGreen 0:616601bde9fb 127
AdamGreen 0:616601bde9fb 128 /** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
AdamGreen 0:616601bde9fb 129 * Default is 0: call pppos_input() for received raw characters, charcater
AdamGreen 0:616601bde9fb 130 * reception is up to the port */
AdamGreen 0:616601bde9fb 131 #ifndef PPP_INPROC_OWNTHREAD
AdamGreen 0:616601bde9fb 132 #define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
AdamGreen 0:616601bde9fb 133 #endif
AdamGreen 0:616601bde9fb 134
AdamGreen 0:616601bde9fb 135 #if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
AdamGreen 0:616601bde9fb 136 #error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
AdamGreen 0:616601bde9fb 137 #endif
AdamGreen 0:616601bde9fb 138
AdamGreen 0:616601bde9fb 139 /*
AdamGreen 0:616601bde9fb 140 * The basic PPP frame.
AdamGreen 0:616601bde9fb 141 */
AdamGreen 0:616601bde9fb 142 #define PPP_ADDRESS(p) (((u_char *)(p))[0])
AdamGreen 0:616601bde9fb 143 #define PPP_CONTROL(p) (((u_char *)(p))[1])
AdamGreen 0:616601bde9fb 144 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
AdamGreen 0:616601bde9fb 145
AdamGreen 0:616601bde9fb 146 /* PPP packet parser states. Current state indicates operation yet to be
AdamGreen 0:616601bde9fb 147 * completed. */
AdamGreen 0:616601bde9fb 148 typedef enum {
AdamGreen 0:616601bde9fb 149 PDIDLE = 0, /* Idle state - waiting. */
AdamGreen 0:616601bde9fb 150 PDSTART, /* Process start flag. */
AdamGreen 0:616601bde9fb 151 PDADDRESS, /* Process address field. */
AdamGreen 0:616601bde9fb 152 PDCONTROL, /* Process control field. */
AdamGreen 0:616601bde9fb 153 PDPROTOCOL1, /* Process protocol field 1. */
AdamGreen 0:616601bde9fb 154 PDPROTOCOL2, /* Process protocol field 2. */
AdamGreen 0:616601bde9fb 155 PDDATA /* Process data byte. */
AdamGreen 0:616601bde9fb 156 } PPPDevStates;
AdamGreen 0:616601bde9fb 157
AdamGreen 0:616601bde9fb 158 #define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
AdamGreen 0:616601bde9fb 159
AdamGreen 0:616601bde9fb 160 /************************/
AdamGreen 0:616601bde9fb 161 /*** LOCAL DATA TYPES ***/
AdamGreen 0:616601bde9fb 162 /************************/
AdamGreen 0:616601bde9fb 163
AdamGreen 0:616601bde9fb 164 /** RX buffer size: this may be configured smaller! */
AdamGreen 0:616601bde9fb 165 #ifndef PPPOS_RX_BUFSIZE
AdamGreen 0:616601bde9fb 166 #define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
AdamGreen 0:616601bde9fb 167 #endif
AdamGreen 0:616601bde9fb 168
AdamGreen 0:616601bde9fb 169 typedef struct PPPControlRx_s {
AdamGreen 0:616601bde9fb 170 /** unit number / ppp descriptor */
AdamGreen 0:616601bde9fb 171 int pd;
AdamGreen 0:616601bde9fb 172 /** the rx file descriptor */
AdamGreen 0:616601bde9fb 173 sio_fd_t fd;
AdamGreen 0:616601bde9fb 174 /** receive buffer - encoded data is stored here */
AdamGreen 0:616601bde9fb 175 u_char rxbuf[PPPOS_RX_BUFSIZE];
AdamGreen 0:616601bde9fb 176
AdamGreen 0:616601bde9fb 177 /* The input packet. */
AdamGreen 0:616601bde9fb 178 struct pbuf *inHead, *inTail;
AdamGreen 0:616601bde9fb 179
AdamGreen 0:616601bde9fb 180 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 181 u16_t inProtocol; /* The input protocol code. */
AdamGreen 0:616601bde9fb 182 u16_t inFCS; /* Input Frame Check Sequence value. */
AdamGreen 0:616601bde9fb 183 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 184 PPPDevStates inState; /* The input process state. */
AdamGreen 0:616601bde9fb 185 char inEscaped; /* Escape next character. */
AdamGreen 0:616601bde9fb 186 ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
AdamGreen 0:616601bde9fb 187 } PPPControlRx;
AdamGreen 0:616601bde9fb 188
AdamGreen 0:616601bde9fb 189 /*
AdamGreen 0:616601bde9fb 190 * PPP interface control block.
AdamGreen 0:616601bde9fb 191 */
AdamGreen 0:616601bde9fb 192 typedef struct PPPControl_s {
AdamGreen 0:616601bde9fb 193 PPPControlRx rx;
AdamGreen 0:616601bde9fb 194 char openFlag; /* True when in use. */
AdamGreen 0:616601bde9fb 195 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 196 struct netif *ethif;
AdamGreen 0:616601bde9fb 197 struct pppoe_softc *pppoe_sc;
AdamGreen 0:616601bde9fb 198 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 199 int if_up; /* True when the interface is up. */
AdamGreen 0:616601bde9fb 200 int errCode; /* Code indicating why interface is down. */
AdamGreen 0:616601bde9fb 201 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 202 sio_fd_t fd; /* File device ID of port. */
AdamGreen 0:616601bde9fb 203 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 204 u16_t mtu; /* Peer's mru */
AdamGreen 0:616601bde9fb 205 int pcomp; /* Does peer accept protocol compression? */
AdamGreen 0:616601bde9fb 206 int accomp; /* Does peer accept addr/ctl compression? */
AdamGreen 0:616601bde9fb 207 u_long lastXMit; /* Time of last transmission. */
AdamGreen 0:616601bde9fb 208 ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
AdamGreen 0:616601bde9fb 209 #if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen 0:616601bde9fb 210 int vjEnabled; /* Flag indicating VJ compression enabled. */
AdamGreen 0:616601bde9fb 211 struct vjcompress vjComp; /* Van Jacobson compression header. */
AdamGreen 0:616601bde9fb 212 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 213
AdamGreen 0:616601bde9fb 214 struct netif netif;
AdamGreen 0:616601bde9fb 215
AdamGreen 0:616601bde9fb 216 struct ppp_addrs addrs;
AdamGreen 0:616601bde9fb 217
AdamGreen 0:616601bde9fb 218 void (*linkStatusCB)(void *ctx, int errCode, void *arg);
AdamGreen 0:616601bde9fb 219 void *linkStatusCtx;
AdamGreen 0:616601bde9fb 220
AdamGreen 0:616601bde9fb 221 } PPPControl;
AdamGreen 0:616601bde9fb 222
AdamGreen 0:616601bde9fb 223
AdamGreen 0:616601bde9fb 224 /*
AdamGreen 0:616601bde9fb 225 * Ioctl definitions.
AdamGreen 0:616601bde9fb 226 */
AdamGreen 0:616601bde9fb 227
AdamGreen 0:616601bde9fb 228 struct npioctl {
AdamGreen 0:616601bde9fb 229 int protocol; /* PPP procotol, e.g. PPP_IP */
AdamGreen 0:616601bde9fb 230 enum NPmode mode;
AdamGreen 0:616601bde9fb 231 };
AdamGreen 0:616601bde9fb 232
AdamGreen 0:616601bde9fb 233
AdamGreen 0:616601bde9fb 234
AdamGreen 0:616601bde9fb 235 /***********************************/
AdamGreen 0:616601bde9fb 236 /*** LOCAL FUNCTION DECLARATIONS ***/
AdamGreen 0:616601bde9fb 237 /***********************************/
AdamGreen 0:616601bde9fb 238 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 239 #if PPP_INPROC_OWNTHREAD
AdamGreen 0:616601bde9fb 240 static void pppInputThread(void *arg);
AdamGreen 0:616601bde9fb 241 #endif /* PPP_INPROC_OWNTHREAD */
AdamGreen 0:616601bde9fb 242 static void pppDrop(PPPControlRx *pcrx);
AdamGreen 0:616601bde9fb 243 static void pppInProc(PPPControlRx *pcrx, u_char *s, int l);
AdamGreen 0:616601bde9fb 244 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 245
AdamGreen 0:616601bde9fb 246
AdamGreen 0:616601bde9fb 247 /******************************/
AdamGreen 0:616601bde9fb 248 /*** PUBLIC DATA STRUCTURES ***/
AdamGreen 0:616601bde9fb 249 /******************************/
AdamGreen 0:616601bde9fb 250 u_long subnetMask;
AdamGreen 0:616601bde9fb 251
AdamGreen 0:616601bde9fb 252 static PPPControl pppControl[NUM_PPP] MEM_POSITION; /* The PPP interface control blocks. */
AdamGreen 0:616601bde9fb 253
AdamGreen 0:616601bde9fb 254 /*
AdamGreen 0:616601bde9fb 255 * PPP Data Link Layer "protocol" table.
AdamGreen 0:616601bde9fb 256 * One entry per supported protocol.
AdamGreen 0:616601bde9fb 257 * The last entry must be NULL.
AdamGreen 0:616601bde9fb 258 */
AdamGreen 0:616601bde9fb 259 struct protent *ppp_protocols[] = {
AdamGreen 0:616601bde9fb 260 &lcp_protent,
AdamGreen 0:616601bde9fb 261 #if PAP_SUPPORT
AdamGreen 0:616601bde9fb 262 &pap_protent,
AdamGreen 0:616601bde9fb 263 #endif /* PAP_SUPPORT */
AdamGreen 0:616601bde9fb 264 #if CHAP_SUPPORT
AdamGreen 0:616601bde9fb 265 &chap_protent,
AdamGreen 0:616601bde9fb 266 #endif /* CHAP_SUPPORT */
AdamGreen 0:616601bde9fb 267 #if CBCP_SUPPORT
AdamGreen 0:616601bde9fb 268 &cbcp_protent,
AdamGreen 0:616601bde9fb 269 #endif /* CBCP_SUPPORT */
AdamGreen 0:616601bde9fb 270 &ipcp_protent,
AdamGreen 0:616601bde9fb 271 #if CCP_SUPPORT
AdamGreen 0:616601bde9fb 272 &ccp_protent,
AdamGreen 0:616601bde9fb 273 #endif /* CCP_SUPPORT */
AdamGreen 0:616601bde9fb 274 NULL
AdamGreen 0:616601bde9fb 275 };
AdamGreen 0:616601bde9fb 276
AdamGreen 0:616601bde9fb 277
AdamGreen 0:616601bde9fb 278 /*
AdamGreen 0:616601bde9fb 279 * Buffers for outgoing packets. This must be accessed only from the appropriate
AdamGreen 0:616601bde9fb 280 * PPP task so that it doesn't need to be protected to avoid collisions.
AdamGreen 0:616601bde9fb 281 */
AdamGreen 0:616601bde9fb 282 u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] MEM_POSITION;
AdamGreen 0:616601bde9fb 283
AdamGreen 0:616601bde9fb 284
AdamGreen 0:616601bde9fb 285 /*****************************/
AdamGreen 0:616601bde9fb 286 /*** LOCAL DATA STRUCTURES ***/
AdamGreen 0:616601bde9fb 287 /*****************************/
AdamGreen 0:616601bde9fb 288
AdamGreen 0:616601bde9fb 289 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 290 /*
AdamGreen 0:616601bde9fb 291 * FCS lookup table as calculated by genfcstab.
AdamGreen 0:616601bde9fb 292 * @todo: smaller, slower implementation for lower memory footprint?
AdamGreen 0:616601bde9fb 293 */
AdamGreen 0:616601bde9fb 294 static const u_short fcstab[256] = {
AdamGreen 0:616601bde9fb 295 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
AdamGreen 0:616601bde9fb 296 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
AdamGreen 0:616601bde9fb 297 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
AdamGreen 0:616601bde9fb 298 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
AdamGreen 0:616601bde9fb 299 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
AdamGreen 0:616601bde9fb 300 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
AdamGreen 0:616601bde9fb 301 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
AdamGreen 0:616601bde9fb 302 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
AdamGreen 0:616601bde9fb 303 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
AdamGreen 0:616601bde9fb 304 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
AdamGreen 0:616601bde9fb 305 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
AdamGreen 0:616601bde9fb 306 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
AdamGreen 0:616601bde9fb 307 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
AdamGreen 0:616601bde9fb 308 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
AdamGreen 0:616601bde9fb 309 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
AdamGreen 0:616601bde9fb 310 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
AdamGreen 0:616601bde9fb 311 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
AdamGreen 0:616601bde9fb 312 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
AdamGreen 0:616601bde9fb 313 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
AdamGreen 0:616601bde9fb 314 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
AdamGreen 0:616601bde9fb 315 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
AdamGreen 0:616601bde9fb 316 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
AdamGreen 0:616601bde9fb 317 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
AdamGreen 0:616601bde9fb 318 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
AdamGreen 0:616601bde9fb 319 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
AdamGreen 0:616601bde9fb 320 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
AdamGreen 0:616601bde9fb 321 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
AdamGreen 0:616601bde9fb 322 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
AdamGreen 0:616601bde9fb 323 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
AdamGreen 0:616601bde9fb 324 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
AdamGreen 0:616601bde9fb 325 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
AdamGreen 0:616601bde9fb 326 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
AdamGreen 0:616601bde9fb 327 };
AdamGreen 0:616601bde9fb 328
AdamGreen 0:616601bde9fb 329 /* PPP's Asynchronous-Control-Character-Map. The mask array is used
AdamGreen 0:616601bde9fb 330 * to select the specific bit for a character. */
AdamGreen 0:616601bde9fb 331 static u_char pppACCMMask[] = {
AdamGreen 0:616601bde9fb 332 0x01,
AdamGreen 0:616601bde9fb 333 0x02,
AdamGreen 0:616601bde9fb 334 0x04,
AdamGreen 0:616601bde9fb 335 0x08,
AdamGreen 0:616601bde9fb 336 0x10,
AdamGreen 0:616601bde9fb 337 0x20,
AdamGreen 0:616601bde9fb 338 0x40,
AdamGreen 0:616601bde9fb 339 0x80
AdamGreen 0:616601bde9fb 340 };
AdamGreen 0:616601bde9fb 341
AdamGreen 0:616601bde9fb 342 /** Wake up the task blocked in reading from serial line (if any) */
AdamGreen 0:616601bde9fb 343 static void
AdamGreen 0:616601bde9fb 344 pppRecvWakeup(int pd)
AdamGreen 0:616601bde9fb 345 {
AdamGreen 0:616601bde9fb 346 PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
AdamGreen 0:616601bde9fb 347 sio_read_abort(pppControl[pd].fd);
AdamGreen 0:616601bde9fb 348 }
AdamGreen 0:616601bde9fb 349 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 350
AdamGreen 0:616601bde9fb 351 void
AdamGreen 0:616601bde9fb 352 pppLinkTerminated(int pd)
AdamGreen 0:616601bde9fb 353 {
AdamGreen 0:616601bde9fb 354 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
AdamGreen 0:616601bde9fb 355
AdamGreen 0:616601bde9fb 356 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 357 if (pppControl[pd].ethif) {
AdamGreen 0:616601bde9fb 358 pppoe_disconnect(pppControl[pd].pppoe_sc);
AdamGreen 0:616601bde9fb 359 } else
AdamGreen 0:616601bde9fb 360 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 361 {
AdamGreen 0:616601bde9fb 362 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 363 PPPControl* pc;
AdamGreen 0:616601bde9fb 364 pppRecvWakeup(pd);
AdamGreen 0:616601bde9fb 365 pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 366 pppDrop(&pc->rx); /* bug fix #17726 */
AdamGreen 0:616601bde9fb 367
AdamGreen 0:616601bde9fb 368 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen 0:616601bde9fb 369 if (pc->linkStatusCB) {
AdamGreen 0:616601bde9fb 370 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
AdamGreen 0:616601bde9fb 371 }
AdamGreen 0:616601bde9fb 372
AdamGreen 0:616601bde9fb 373 pc->openFlag = 0;/**/
AdamGreen 0:616601bde9fb 374 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 375 }
AdamGreen 0:616601bde9fb 376 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
AdamGreen 0:616601bde9fb 377 }
AdamGreen 0:616601bde9fb 378
AdamGreen 0:616601bde9fb 379 void
AdamGreen 0:616601bde9fb 380 pppLinkDown(int pd)
AdamGreen 0:616601bde9fb 381 {
AdamGreen 0:616601bde9fb 382 PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
AdamGreen 0:616601bde9fb 383
AdamGreen 0:616601bde9fb 384 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 385 if (pppControl[pd].ethif) {
AdamGreen 0:616601bde9fb 386 pppoe_disconnect(pppControl[pd].pppoe_sc);
AdamGreen 0:616601bde9fb 387 } else
AdamGreen 0:616601bde9fb 388 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 389 {
AdamGreen 0:616601bde9fb 390 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 391 pppRecvWakeup(pd);
AdamGreen 0:616601bde9fb 392 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 393 }
AdamGreen 0:616601bde9fb 394 }
AdamGreen 0:616601bde9fb 395
AdamGreen 0:616601bde9fb 396 /** Initiate LCP open request */
AdamGreen 0:616601bde9fb 397 static void
AdamGreen 0:616601bde9fb 398 pppStart(int pd)
AdamGreen 0:616601bde9fb 399 {
AdamGreen 0:616601bde9fb 400 PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
AdamGreen 0:616601bde9fb 401 lcp_lowerup(pd);
AdamGreen 0:616601bde9fb 402 lcp_open(pd); /* Start protocol */
AdamGreen 0:616601bde9fb 403 PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
AdamGreen 0:616601bde9fb 404 }
AdamGreen 0:616601bde9fb 405
AdamGreen 0:616601bde9fb 406 /** LCP close request */
AdamGreen 0:616601bde9fb 407 static void
AdamGreen 0:616601bde9fb 408 pppStop(int pd)
AdamGreen 0:616601bde9fb 409 {
AdamGreen 0:616601bde9fb 410 PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
AdamGreen 0:616601bde9fb 411 lcp_close(pd, "User request");
AdamGreen 0:616601bde9fb 412 }
AdamGreen 0:616601bde9fb 413
AdamGreen 0:616601bde9fb 414 /** Called when carrier/link is lost */
AdamGreen 0:616601bde9fb 415 static void
AdamGreen 0:616601bde9fb 416 pppHup(int pd)
AdamGreen 0:616601bde9fb 417 {
AdamGreen 0:616601bde9fb 418 PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
AdamGreen 0:616601bde9fb 419 lcp_lowerdown(pd);
AdamGreen 0:616601bde9fb 420 link_terminated(pd);
AdamGreen 0:616601bde9fb 421 }
AdamGreen 0:616601bde9fb 422
AdamGreen 0:616601bde9fb 423 /***********************************/
AdamGreen 0:616601bde9fb 424 /*** PUBLIC FUNCTION DEFINITIONS ***/
AdamGreen 0:616601bde9fb 425 /***********************************/
AdamGreen 0:616601bde9fb 426 /* Initialize the PPP subsystem. */
AdamGreen 0:616601bde9fb 427
AdamGreen 0:616601bde9fb 428 struct ppp_settings ppp_settings;
AdamGreen 0:616601bde9fb 429
AdamGreen 0:616601bde9fb 430 void
AdamGreen 0:616601bde9fb 431 pppInit(void)
AdamGreen 0:616601bde9fb 432 {
AdamGreen 0:616601bde9fb 433 struct protent *protp;
AdamGreen 0:616601bde9fb 434 int i, j;
AdamGreen 0:616601bde9fb 435
AdamGreen 0:616601bde9fb 436 memset(&ppp_settings, 0, sizeof(ppp_settings));
AdamGreen 0:616601bde9fb 437 ppp_settings.usepeerdns = 1;
AdamGreen 0:616601bde9fb 438 pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
AdamGreen 0:616601bde9fb 439
AdamGreen 0:616601bde9fb 440 magicInit();
AdamGreen 0:616601bde9fb 441
AdamGreen 0:616601bde9fb 442 subnetMask = PP_HTONL(0xffffff00);
AdamGreen 0:616601bde9fb 443
AdamGreen 0:616601bde9fb 444 for (i = 0; i < NUM_PPP; i++) {
AdamGreen 0:616601bde9fb 445 /* Initialize each protocol to the standard option set. */
AdamGreen 0:616601bde9fb 446 for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
AdamGreen 0:616601bde9fb 447 (*protp->init)(i);
AdamGreen 0:616601bde9fb 448 }
AdamGreen 0:616601bde9fb 449 }
AdamGreen 0:616601bde9fb 450 }
AdamGreen 0:616601bde9fb 451
AdamGreen 0:616601bde9fb 452 void
AdamGreen 0:616601bde9fb 453 pppSetAuth(enum pppAuthType authType, const char *user, const char *passwd)
AdamGreen 0:616601bde9fb 454 {
AdamGreen 0:616601bde9fb 455 switch(authType) {
AdamGreen 0:616601bde9fb 456 case PPPAUTHTYPE_NONE:
AdamGreen 0:616601bde9fb 457 default:
AdamGreen 0:616601bde9fb 458 #ifdef LWIP_PPP_STRICT_PAP_REJECT
AdamGreen 0:616601bde9fb 459 ppp_settings.refuse_pap = 1;
AdamGreen 0:616601bde9fb 460 #else /* LWIP_PPP_STRICT_PAP_REJECT */
AdamGreen 0:616601bde9fb 461 /* some providers request pap and accept an empty login/pw */
AdamGreen 0:616601bde9fb 462 ppp_settings.refuse_pap = 0;
AdamGreen 0:616601bde9fb 463 #endif /* LWIP_PPP_STRICT_PAP_REJECT */
AdamGreen 0:616601bde9fb 464 ppp_settings.refuse_chap = 1;
AdamGreen 0:616601bde9fb 465 break;
AdamGreen 0:616601bde9fb 466
AdamGreen 0:616601bde9fb 467 case PPPAUTHTYPE_ANY:
AdamGreen 0:616601bde9fb 468 /* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
AdamGreen 0:616601bde9fb 469 * RFC 1994 says:
AdamGreen 0:616601bde9fb 470 *
AdamGreen 0:616601bde9fb 471 * In practice, within or associated with each PPP server, there is a
AdamGreen 0:616601bde9fb 472 * database which associates "user" names with authentication
AdamGreen 0:616601bde9fb 473 * information ("secrets"). It is not anticipated that a particular
AdamGreen 0:616601bde9fb 474 * named user would be authenticated by multiple methods. This would
AdamGreen 0:616601bde9fb 475 * make the user vulnerable to attacks which negotiate the least secure
AdamGreen 0:616601bde9fb 476 * method from among a set (such as PAP rather than CHAP). If the same
AdamGreen 0:616601bde9fb 477 * secret was used, PAP would reveal the secret to be used later with
AdamGreen 0:616601bde9fb 478 * CHAP.
AdamGreen 0:616601bde9fb 479 *
AdamGreen 0:616601bde9fb 480 * Instead, for each user name there should be an indication of exactly
AdamGreen 0:616601bde9fb 481 * one method used to authenticate that user name. If a user needs to
AdamGreen 0:616601bde9fb 482 * make use of different authentication methods under different
AdamGreen 0:616601bde9fb 483 * circumstances, then distinct user names SHOULD be employed, each of
AdamGreen 0:616601bde9fb 484 * which identifies exactly one authentication method.
AdamGreen 0:616601bde9fb 485 *
AdamGreen 0:616601bde9fb 486 */
AdamGreen 0:616601bde9fb 487 ppp_settings.refuse_pap = 0;
AdamGreen 0:616601bde9fb 488 ppp_settings.refuse_chap = 0;
AdamGreen 0:616601bde9fb 489 break;
AdamGreen 0:616601bde9fb 490
AdamGreen 0:616601bde9fb 491 case PPPAUTHTYPE_PAP:
AdamGreen 0:616601bde9fb 492 ppp_settings.refuse_pap = 0;
AdamGreen 0:616601bde9fb 493 ppp_settings.refuse_chap = 1;
AdamGreen 0:616601bde9fb 494 break;
AdamGreen 0:616601bde9fb 495
AdamGreen 0:616601bde9fb 496 case PPPAUTHTYPE_CHAP:
AdamGreen 0:616601bde9fb 497 ppp_settings.refuse_pap = 1;
AdamGreen 0:616601bde9fb 498 ppp_settings.refuse_chap = 0;
AdamGreen 0:616601bde9fb 499 break;
AdamGreen 0:616601bde9fb 500 }
AdamGreen 0:616601bde9fb 501
AdamGreen 0:616601bde9fb 502 if(user) {
AdamGreen 0:616601bde9fb 503 strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
AdamGreen 0:616601bde9fb 504 ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
AdamGreen 0:616601bde9fb 505 } else {
AdamGreen 0:616601bde9fb 506 ppp_settings.user[0] = '\0';
AdamGreen 0:616601bde9fb 507 }
AdamGreen 0:616601bde9fb 508
AdamGreen 0:616601bde9fb 509 if(passwd) {
AdamGreen 0:616601bde9fb 510 strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
AdamGreen 0:616601bde9fb 511 ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
AdamGreen 0:616601bde9fb 512 } else {
AdamGreen 0:616601bde9fb 513 ppp_settings.passwd[0] = '\0';
AdamGreen 0:616601bde9fb 514 }
AdamGreen 0:616601bde9fb 515 }
AdamGreen 0:616601bde9fb 516
AdamGreen 0:616601bde9fb 517 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 518 /** Open a new PPP connection using the given I/O device.
AdamGreen 0:616601bde9fb 519 * This initializes the PPP control block but does not
AdamGreen 0:616601bde9fb 520 * attempt to negotiate the LCP session. If this port
AdamGreen 0:616601bde9fb 521 * connects to a modem, the modem connection must be
AdamGreen 0:616601bde9fb 522 * established before calling this.
AdamGreen 0:616601bde9fb 523 * Return a new PPP connection descriptor on success or
AdamGreen 0:616601bde9fb 524 * an error code (negative) on failure.
AdamGreen 0:616601bde9fb 525 *
AdamGreen 0:616601bde9fb 526 * pppOpen() is directly defined to this function.
AdamGreen 0:616601bde9fb 527 */
AdamGreen 0:616601bde9fb 528 int
AdamGreen 0:616601bde9fb 529 pppOverSerialOpen(sio_fd_t fd, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx)
AdamGreen 0:616601bde9fb 530 {
AdamGreen 0:616601bde9fb 531 PPPControl *pc;
AdamGreen 0:616601bde9fb 532 int pd;
AdamGreen 0:616601bde9fb 533
AdamGreen 0:616601bde9fb 534 if (linkStatusCB == NULL) {
AdamGreen 0:616601bde9fb 535 /* PPP is single-threaded: without a callback,
AdamGreen 0:616601bde9fb 536 * there is no way to know when the link is up. */
AdamGreen 0:616601bde9fb 537 return PPPERR_PARAM;
AdamGreen 0:616601bde9fb 538 }
AdamGreen 0:616601bde9fb 539
AdamGreen 0:616601bde9fb 540 /* Find a free PPP session descriptor. */
AdamGreen 0:616601bde9fb 541 for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
AdamGreen 0:616601bde9fb 542
AdamGreen 0:616601bde9fb 543 if (pd >= NUM_PPP) {
AdamGreen 0:616601bde9fb 544 pd = PPPERR_OPEN;
AdamGreen 0:616601bde9fb 545 } else {
AdamGreen 0:616601bde9fb 546 pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 547 /* @todo: is this correct or do I overwrite something? */
AdamGreen 0:616601bde9fb 548 memset(pc, 0, sizeof(PPPControl));
AdamGreen 0:616601bde9fb 549 pc->rx.pd = pd;
AdamGreen 0:616601bde9fb 550 pc->rx.fd = fd;
AdamGreen 0:616601bde9fb 551
AdamGreen 0:616601bde9fb 552 pc->openFlag = 1;
AdamGreen 0:616601bde9fb 553 pc->fd = fd;
AdamGreen 0:616601bde9fb 554
AdamGreen 0:616601bde9fb 555 #if VJ_SUPPORT
AdamGreen 0:616601bde9fb 556 vj_compress_init(&pc->vjComp);
AdamGreen 0:616601bde9fb 557 #endif /* VJ_SUPPORT */
AdamGreen 0:616601bde9fb 558
AdamGreen 0:616601bde9fb 559 /*
AdamGreen 0:616601bde9fb 560 * Default the in and out accm so that escape and flag characters
AdamGreen 0:616601bde9fb 561 * are always escaped.
AdamGreen 0:616601bde9fb 562 */
AdamGreen 0:616601bde9fb 563 pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
AdamGreen 0:616601bde9fb 564 pc->outACCM[15] = 0x60;
AdamGreen 0:616601bde9fb 565
AdamGreen 0:616601bde9fb 566 pc->linkStatusCB = linkStatusCB;
AdamGreen 0:616601bde9fb 567 pc->linkStatusCtx = linkStatusCtx;
AdamGreen 0:616601bde9fb 568
AdamGreen 0:616601bde9fb 569 /*
AdamGreen 0:616601bde9fb 570 * Start the connection and handle incoming events (packet or timeout).
AdamGreen 0:616601bde9fb 571 */
AdamGreen 0:616601bde9fb 572 PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
AdamGreen 0:616601bde9fb 573 pppStart(pd);
AdamGreen 0:616601bde9fb 574 #if PPP_INPROC_OWNTHREAD
AdamGreen 0:616601bde9fb 575 sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)&pc->rx, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO);
AdamGreen 0:616601bde9fb 576 #endif
AdamGreen 0:616601bde9fb 577 }
AdamGreen 0:616601bde9fb 578
AdamGreen 0:616601bde9fb 579 return pd;
AdamGreen 0:616601bde9fb 580 }
AdamGreen 0:616601bde9fb 581 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 582
AdamGreen 0:616601bde9fb 583 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 584 static void pppOverEthernetLinkStatusCB(int pd, int up);
AdamGreen 0:616601bde9fb 585
AdamGreen 0:616601bde9fb 586 void
AdamGreen 0:616601bde9fb 587 pppOverEthernetClose(int pd)
AdamGreen 0:616601bde9fb 588 {
AdamGreen 0:616601bde9fb 589 PPPControl* pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 590
AdamGreen 0:616601bde9fb 591 /* *TJL* There's no lcp_deinit */
AdamGreen 0:616601bde9fb 592 lcp_close(pd, NULL);
AdamGreen 0:616601bde9fb 593
AdamGreen 0:616601bde9fb 594 pppoe_destroy(&pc->netif);
AdamGreen 0:616601bde9fb 595 }
AdamGreen 0:616601bde9fb 596
AdamGreen 0:616601bde9fb 597 int pppOverEthernetOpen(struct netif *ethif, const char *service_name, const char *concentrator_name, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx)
AdamGreen 0:616601bde9fb 598 {
AdamGreen 0:616601bde9fb 599 PPPControl *pc;
AdamGreen 0:616601bde9fb 600 int pd;
AdamGreen 0:616601bde9fb 601
AdamGreen 0:616601bde9fb 602 LWIP_UNUSED_ARG(service_name);
AdamGreen 0:616601bde9fb 603 LWIP_UNUSED_ARG(concentrator_name);
AdamGreen 0:616601bde9fb 604
AdamGreen 0:616601bde9fb 605 if (linkStatusCB == NULL) {
AdamGreen 0:616601bde9fb 606 /* PPP is single-threaded: without a callback,
AdamGreen 0:616601bde9fb 607 * there is no way to know when the link is up. */
AdamGreen 0:616601bde9fb 608 return PPPERR_PARAM;
AdamGreen 0:616601bde9fb 609 }
AdamGreen 0:616601bde9fb 610
AdamGreen 0:616601bde9fb 611 /* Find a free PPP session descriptor. Critical region? */
AdamGreen 0:616601bde9fb 612 for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
AdamGreen 0:616601bde9fb 613 if (pd >= NUM_PPP) {
AdamGreen 0:616601bde9fb 614 pd = PPPERR_OPEN;
AdamGreen 0:616601bde9fb 615 } else {
AdamGreen 0:616601bde9fb 616 pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 617 memset(pc, 0, sizeof(PPPControl));
AdamGreen 0:616601bde9fb 618 pc->openFlag = 1;
AdamGreen 0:616601bde9fb 619 pc->ethif = ethif;
AdamGreen 0:616601bde9fb 620
AdamGreen 0:616601bde9fb 621 pc->linkStatusCB = linkStatusCB;
AdamGreen 0:616601bde9fb 622 pc->linkStatusCtx = linkStatusCtx;
AdamGreen 0:616601bde9fb 623
AdamGreen 0:616601bde9fb 624 lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
AdamGreen 0:616601bde9fb 625 lcp_wantoptions[pd].neg_asyncmap = 0;
AdamGreen 0:616601bde9fb 626 lcp_wantoptions[pd].neg_pcompression = 0;
AdamGreen 0:616601bde9fb 627 lcp_wantoptions[pd].neg_accompression = 0;
AdamGreen 0:616601bde9fb 628
AdamGreen 0:616601bde9fb 629 lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
AdamGreen 0:616601bde9fb 630 lcp_allowoptions[pd].neg_asyncmap = 0;
AdamGreen 0:616601bde9fb 631 lcp_allowoptions[pd].neg_pcompression = 0;
AdamGreen 0:616601bde9fb 632 lcp_allowoptions[pd].neg_accompression = 0;
AdamGreen 0:616601bde9fb 633
AdamGreen 0:616601bde9fb 634 if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
AdamGreen 0:616601bde9fb 635 pc->openFlag = 0;
AdamGreen 0:616601bde9fb 636 return PPPERR_OPEN;
AdamGreen 0:616601bde9fb 637 }
AdamGreen 0:616601bde9fb 638
AdamGreen 0:616601bde9fb 639 pppoe_connect(pc->pppoe_sc);
AdamGreen 0:616601bde9fb 640 }
AdamGreen 0:616601bde9fb 641
AdamGreen 0:616601bde9fb 642 return pd;
AdamGreen 0:616601bde9fb 643 }
AdamGreen 0:616601bde9fb 644 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 645
AdamGreen 0:616601bde9fb 646
AdamGreen 0:616601bde9fb 647 /* Close a PPP connection and release the descriptor.
AdamGreen 0:616601bde9fb 648 * Any outstanding packets in the queues are dropped.
AdamGreen 0:616601bde9fb 649 * Return 0 on success, an error code on failure. */
AdamGreen 0:616601bde9fb 650 int
AdamGreen 0:616601bde9fb 651 pppClose(int pd)
AdamGreen 0:616601bde9fb 652 {
AdamGreen 0:616601bde9fb 653 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 654 int st = 0;
AdamGreen 0:616601bde9fb 655
AdamGreen 0:616601bde9fb 656 PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
AdamGreen 0:616601bde9fb 657
AdamGreen 0:616601bde9fb 658 /* Disconnect */
AdamGreen 0:616601bde9fb 659 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 660 if(pc->ethif) {
AdamGreen 0:616601bde9fb 661 PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
AdamGreen 0:616601bde9fb 662 pc->errCode = PPPERR_USER;
AdamGreen 0:616601bde9fb 663 /* This will leave us at PHASE_DEAD. */
AdamGreen 0:616601bde9fb 664 pppStop(pd);
AdamGreen 0:616601bde9fb 665 } else
AdamGreen 0:616601bde9fb 666 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 667 {
AdamGreen 0:616601bde9fb 668 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 669 PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
AdamGreen 0:616601bde9fb 670 pc->errCode = PPPERR_USER;
AdamGreen 0:616601bde9fb 671 /* This will leave us at PHASE_DEAD. */
AdamGreen 0:616601bde9fb 672 pppStop(pd);
AdamGreen 0:616601bde9fb 673 pppRecvWakeup(pd);
AdamGreen 0:616601bde9fb 674 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 675 }
AdamGreen 0:616601bde9fb 676
AdamGreen 0:616601bde9fb 677 return st;
AdamGreen 0:616601bde9fb 678 }
AdamGreen 0:616601bde9fb 679
AdamGreen 0:616601bde9fb 680 /* This function is called when carrier is lost on the PPP channel. */
AdamGreen 0:616601bde9fb 681 void
AdamGreen 0:616601bde9fb 682 pppSigHUP(int pd)
AdamGreen 0:616601bde9fb 683 {
AdamGreen 0:616601bde9fb 684 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 685 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 686 if(pc->ethif) {
AdamGreen 0:616601bde9fb 687 PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
AdamGreen 0:616601bde9fb 688 pppHup(pd);
AdamGreen 0:616601bde9fb 689 } else
AdamGreen 0:616601bde9fb 690 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 691 {
AdamGreen 0:616601bde9fb 692 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 693 PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
AdamGreen 0:616601bde9fb 694 pppHup(pd);
AdamGreen 0:616601bde9fb 695 pppRecvWakeup(pd);
AdamGreen 0:616601bde9fb 696 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 697 }
AdamGreen 0:616601bde9fb 698 }
AdamGreen 0:616601bde9fb 699
AdamGreen 0:616601bde9fb 700 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 701 static void
AdamGreen 0:616601bde9fb 702 nPut(PPPControl *pc, struct pbuf *nb)
AdamGreen 0:616601bde9fb 703 {
AdamGreen 0:616601bde9fb 704 struct pbuf *b;
AdamGreen 0:616601bde9fb 705 int c;
AdamGreen 0:616601bde9fb 706
AdamGreen 0:616601bde9fb 707 for(b = nb; b != NULL; b = b->next) {
AdamGreen 0:616601bde9fb 708 if((c = sio_write(pc->fd, (u8_t *)b->payload, b->len)) != b->len) {
AdamGreen 0:616601bde9fb 709 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 710 ("PPP nPut: incomplete sio_write(fd:%"SZT_F", len:%d, c: 0x%"X8_F") c = %d\n", (size_t)pc->fd, b->len, c, c));
AdamGreen 0:616601bde9fb 711 LINK_STATS_INC(link.err);
AdamGreen 0:616601bde9fb 712 pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
AdamGreen 0:616601bde9fb 713 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 714 pbuf_free(nb);
AdamGreen 0:616601bde9fb 715 return;
AdamGreen 0:616601bde9fb 716 }
AdamGreen 0:616601bde9fb 717 }
AdamGreen 0:616601bde9fb 718
AdamGreen 0:616601bde9fb 719 snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
AdamGreen 0:616601bde9fb 720 snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen 0:616601bde9fb 721 pbuf_free(nb);
AdamGreen 0:616601bde9fb 722 LINK_STATS_INC(link.xmit);
AdamGreen 0:616601bde9fb 723 }
AdamGreen 0:616601bde9fb 724
AdamGreen 0:616601bde9fb 725 /*
AdamGreen 0:616601bde9fb 726 * pppAppend - append given character to end of given pbuf. If outACCM
AdamGreen 0:616601bde9fb 727 * is not NULL and the character needs to be escaped, do so.
AdamGreen 0:616601bde9fb 728 * If pbuf is full, append another.
AdamGreen 0:616601bde9fb 729 * Return the current pbuf.
AdamGreen 0:616601bde9fb 730 */
AdamGreen 0:616601bde9fb 731 static struct pbuf *
AdamGreen 0:616601bde9fb 732 pppAppend(u_char c, struct pbuf *nb, ext_accm *outACCM)
AdamGreen 0:616601bde9fb 733 {
AdamGreen 0:616601bde9fb 734 struct pbuf *tb = nb;
AdamGreen 0:616601bde9fb 735
AdamGreen 0:616601bde9fb 736 /* Make sure there is room for the character and an escape code.
AdamGreen 0:616601bde9fb 737 * Sure we don't quite fill the buffer if the character doesn't
AdamGreen 0:616601bde9fb 738 * get escaped but is one character worth complicating this? */
AdamGreen 0:616601bde9fb 739 /* Note: We assume no packet header. */
AdamGreen 0:616601bde9fb 740 if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
AdamGreen 0:616601bde9fb 741 tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen 0:616601bde9fb 742 if (tb) {
AdamGreen 0:616601bde9fb 743 nb->next = tb;
AdamGreen 0:616601bde9fb 744 } else {
AdamGreen 0:616601bde9fb 745 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 746 }
AdamGreen 0:616601bde9fb 747 nb = tb;
AdamGreen 0:616601bde9fb 748 }
AdamGreen 0:616601bde9fb 749
AdamGreen 0:616601bde9fb 750 if (nb) {
AdamGreen 0:616601bde9fb 751 if (outACCM && ESCAPE_P(*outACCM, c)) {
AdamGreen 0:616601bde9fb 752 *((u_char*)nb->payload + nb->len++) = PPP_ESCAPE;
AdamGreen 0:616601bde9fb 753 *((u_char*)nb->payload + nb->len++) = c ^ PPP_TRANS;
AdamGreen 0:616601bde9fb 754 } else {
AdamGreen 0:616601bde9fb 755 *((u_char*)nb->payload + nb->len++) = c;
AdamGreen 0:616601bde9fb 756 }
AdamGreen 0:616601bde9fb 757 }
AdamGreen 0:616601bde9fb 758
AdamGreen 0:616601bde9fb 759 return tb;
AdamGreen 0:616601bde9fb 760 }
AdamGreen 0:616601bde9fb 761 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 762
AdamGreen 0:616601bde9fb 763 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 764 static err_t
AdamGreen 0:616601bde9fb 765 pppifOutputOverEthernet(int pd, struct pbuf *p)
AdamGreen 0:616601bde9fb 766 {
AdamGreen 0:616601bde9fb 767 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 768 struct pbuf *pb;
AdamGreen 0:616601bde9fb 769 u_short protocol = PPP_IP;
AdamGreen 0:616601bde9fb 770 int i=0;
AdamGreen 0:616601bde9fb 771 u16_t tot_len;
AdamGreen 0:616601bde9fb 772
AdamGreen 0:616601bde9fb 773 /* @todo: try to use pbuf_header() here! */
AdamGreen 0:616601bde9fb 774 pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
AdamGreen 0:616601bde9fb 775 if(!pb) {
AdamGreen 0:616601bde9fb 776 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 777 LINK_STATS_INC(link.proterr);
AdamGreen 0:616601bde9fb 778 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 779 return ERR_MEM;
AdamGreen 0:616601bde9fb 780 }
AdamGreen 0:616601bde9fb 781
AdamGreen 0:616601bde9fb 782 pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
AdamGreen 0:616601bde9fb 783
AdamGreen 0:616601bde9fb 784 pc->lastXMit = sys_jiffies();
AdamGreen 0:616601bde9fb 785
AdamGreen 0:616601bde9fb 786 if (!pc->pcomp || protocol > 0xFF) {
AdamGreen 0:616601bde9fb 787 *((u_char*)pb->payload + i++) = (protocol >> 8) & 0xFF;
AdamGreen 0:616601bde9fb 788 }
AdamGreen 0:616601bde9fb 789 *((u_char*)pb->payload + i) = protocol & 0xFF;
AdamGreen 0:616601bde9fb 790
AdamGreen 0:616601bde9fb 791 pbuf_chain(pb, p);
AdamGreen 0:616601bde9fb 792 tot_len = pb->tot_len;
AdamGreen 0:616601bde9fb 793
AdamGreen 0:616601bde9fb 794 if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
AdamGreen 0:616601bde9fb 795 LINK_STATS_INC(link.err);
AdamGreen 0:616601bde9fb 796 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 797 return PPPERR_DEVICE;
AdamGreen 0:616601bde9fb 798 }
AdamGreen 0:616601bde9fb 799
AdamGreen 0:616601bde9fb 800 snmp_add_ifoutoctets(&pc->netif, tot_len);
AdamGreen 0:616601bde9fb 801 snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen 0:616601bde9fb 802 LINK_STATS_INC(link.xmit);
AdamGreen 0:616601bde9fb 803 return ERR_OK;
AdamGreen 0:616601bde9fb 804 }
AdamGreen 0:616601bde9fb 805 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 806
AdamGreen 0:616601bde9fb 807 /* Send a packet on the given connection. */
AdamGreen 0:616601bde9fb 808 static err_t
AdamGreen 0:616601bde9fb 809 pppifOutput(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr)
AdamGreen 0:616601bde9fb 810 {
AdamGreen 0:616601bde9fb 811 int pd = (int)(size_t)netif->state;
AdamGreen 0:616601bde9fb 812 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 813 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 814 u_short protocol = PPP_IP;
AdamGreen 0:616601bde9fb 815 u_int fcsOut = PPP_INITFCS;
AdamGreen 0:616601bde9fb 816 struct pbuf *headMB = NULL, *tailMB = NULL, *p;
AdamGreen 0:616601bde9fb 817 u_char c;
AdamGreen 0:616601bde9fb 818 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 819
AdamGreen 0:616601bde9fb 820 LWIP_UNUSED_ARG(ipaddr);
AdamGreen 0:616601bde9fb 821
AdamGreen 0:616601bde9fb 822 /* Validate parameters. */
AdamGreen 0:616601bde9fb 823 /* We let any protocol value go through - it can't hurt us
AdamGreen 0:616601bde9fb 824 * and the peer will just drop it if it's not accepting it. */
AdamGreen 0:616601bde9fb 825 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag || !pb) {
AdamGreen 0:616601bde9fb 826 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
AdamGreen 0:616601bde9fb 827 pd, PPP_IP, pb));
AdamGreen 0:616601bde9fb 828 LINK_STATS_INC(link.opterr);
AdamGreen 0:616601bde9fb 829 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 830 snmp_inc_ifoutdiscards(netif);
AdamGreen 0:616601bde9fb 831 return ERR_ARG;
AdamGreen 0:616601bde9fb 832 }
AdamGreen 0:616601bde9fb 833
AdamGreen 0:616601bde9fb 834 /* Check that the link is up. */
AdamGreen 0:616601bde9fb 835 if (lcp_phase[pd] == PHASE_DEAD) {
AdamGreen 0:616601bde9fb 836 PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
AdamGreen 0:616601bde9fb 837 LINK_STATS_INC(link.rterr);
AdamGreen 0:616601bde9fb 838 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 839 snmp_inc_ifoutdiscards(netif);
AdamGreen 0:616601bde9fb 840 return ERR_RTE;
AdamGreen 0:616601bde9fb 841 }
AdamGreen 0:616601bde9fb 842
AdamGreen 0:616601bde9fb 843 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 844 if(pc->ethif) {
AdamGreen 0:616601bde9fb 845 return pppifOutputOverEthernet(pd, pb);
AdamGreen 0:616601bde9fb 846 }
AdamGreen 0:616601bde9fb 847 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 848
AdamGreen 0:616601bde9fb 849 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 850 /* Grab an output buffer. */
AdamGreen 0:616601bde9fb 851 headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen 0:616601bde9fb 852 if (headMB == NULL) {
AdamGreen 0:616601bde9fb 853 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
AdamGreen 0:616601bde9fb 854 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 855 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 856 snmp_inc_ifoutdiscards(netif);
AdamGreen 0:616601bde9fb 857 return ERR_MEM;
AdamGreen 0:616601bde9fb 858 }
AdamGreen 0:616601bde9fb 859
AdamGreen 0:616601bde9fb 860 #if VJ_SUPPORT
AdamGreen 0:616601bde9fb 861 /*
AdamGreen 0:616601bde9fb 862 * Attempt Van Jacobson header compression if VJ is configured and
AdamGreen 0:616601bde9fb 863 * this is an IP packet.
AdamGreen 0:616601bde9fb 864 */
AdamGreen 0:616601bde9fb 865 if (protocol == PPP_IP && pc->vjEnabled) {
AdamGreen 0:616601bde9fb 866 switch (vj_compress_tcp(&pc->vjComp, pb)) {
AdamGreen 0:616601bde9fb 867 case TYPE_IP:
AdamGreen 0:616601bde9fb 868 /* No change...
AdamGreen 0:616601bde9fb 869 protocol = PPP_IP_PROTOCOL; */
AdamGreen 0:616601bde9fb 870 break;
AdamGreen 0:616601bde9fb 871 case TYPE_COMPRESSED_TCP:
AdamGreen 0:616601bde9fb 872 protocol = PPP_VJC_COMP;
AdamGreen 0:616601bde9fb 873 break;
AdamGreen 0:616601bde9fb 874 case TYPE_UNCOMPRESSED_TCP:
AdamGreen 0:616601bde9fb 875 protocol = PPP_VJC_UNCOMP;
AdamGreen 0:616601bde9fb 876 break;
AdamGreen 0:616601bde9fb 877 default:
AdamGreen 0:616601bde9fb 878 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
AdamGreen 0:616601bde9fb 879 LINK_STATS_INC(link.proterr);
AdamGreen 0:616601bde9fb 880 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 881 snmp_inc_ifoutdiscards(netif);
AdamGreen 0:616601bde9fb 882 pbuf_free(headMB);
AdamGreen 0:616601bde9fb 883 return ERR_VAL;
AdamGreen 0:616601bde9fb 884 }
AdamGreen 0:616601bde9fb 885 }
AdamGreen 0:616601bde9fb 886 #endif /* VJ_SUPPORT */
AdamGreen 0:616601bde9fb 887
AdamGreen 0:616601bde9fb 888 tailMB = headMB;
AdamGreen 0:616601bde9fb 889
AdamGreen 0:616601bde9fb 890 /* Build the PPP header. */
AdamGreen 0:616601bde9fb 891 if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
AdamGreen 0:616601bde9fb 892 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen 0:616601bde9fb 893 }
AdamGreen 0:616601bde9fb 894
AdamGreen 0:616601bde9fb 895 pc->lastXMit = sys_jiffies();
AdamGreen 0:616601bde9fb 896 if (!pc->accomp) {
AdamGreen 0:616601bde9fb 897 fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
AdamGreen 0:616601bde9fb 898 tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 899 fcsOut = PPP_FCS(fcsOut, PPP_UI);
AdamGreen 0:616601bde9fb 900 tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 901 }
AdamGreen 0:616601bde9fb 902 if (!pc->pcomp || protocol > 0xFF) {
AdamGreen 0:616601bde9fb 903 c = (protocol >> 8) & 0xFF;
AdamGreen 0:616601bde9fb 904 fcsOut = PPP_FCS(fcsOut, c);
AdamGreen 0:616601bde9fb 905 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 906 }
AdamGreen 0:616601bde9fb 907 c = protocol & 0xFF;
AdamGreen 0:616601bde9fb 908 fcsOut = PPP_FCS(fcsOut, c);
AdamGreen 0:616601bde9fb 909 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 910
AdamGreen 0:616601bde9fb 911 /* Load packet. */
AdamGreen 0:616601bde9fb 912 for(p = pb; p; p = p->next) {
AdamGreen 0:616601bde9fb 913 int n;
AdamGreen 0:616601bde9fb 914 u_char *sPtr;
AdamGreen 0:616601bde9fb 915
AdamGreen 0:616601bde9fb 916 sPtr = (u_char*)p->payload;
AdamGreen 0:616601bde9fb 917 n = p->len;
AdamGreen 0:616601bde9fb 918 while (n-- > 0) {
AdamGreen 0:616601bde9fb 919 c = *sPtr++;
AdamGreen 0:616601bde9fb 920
AdamGreen 0:616601bde9fb 921 /* Update FCS before checking for special characters. */
AdamGreen 0:616601bde9fb 922 fcsOut = PPP_FCS(fcsOut, c);
AdamGreen 0:616601bde9fb 923
AdamGreen 0:616601bde9fb 924 /* Copy to output buffer escaping special characters. */
AdamGreen 0:616601bde9fb 925 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 926 }
AdamGreen 0:616601bde9fb 927 }
AdamGreen 0:616601bde9fb 928
AdamGreen 0:616601bde9fb 929 /* Add FCS and trailing flag. */
AdamGreen 0:616601bde9fb 930 c = ~fcsOut & 0xFF;
AdamGreen 0:616601bde9fb 931 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 932 c = (~fcsOut >> 8) & 0xFF;
AdamGreen 0:616601bde9fb 933 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 934 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen 0:616601bde9fb 935
AdamGreen 0:616601bde9fb 936 /* If we failed to complete the packet, throw it away. */
AdamGreen 0:616601bde9fb 937 if (!tailMB) {
AdamGreen 0:616601bde9fb 938 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 939 ("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
AdamGreen 0:616601bde9fb 940 pd, protocol));
AdamGreen 0:616601bde9fb 941 pbuf_free(headMB);
AdamGreen 0:616601bde9fb 942 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 943 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 944 snmp_inc_ifoutdiscards(netif);
AdamGreen 0:616601bde9fb 945 return ERR_MEM;
AdamGreen 0:616601bde9fb 946 }
AdamGreen 0:616601bde9fb 947
AdamGreen 0:616601bde9fb 948 /* Send it. */
AdamGreen 0:616601bde9fb 949 PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
AdamGreen 0:616601bde9fb 950
AdamGreen 0:616601bde9fb 951 nPut(pc, headMB);
AdamGreen 0:616601bde9fb 952 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 953
AdamGreen 0:616601bde9fb 954 return ERR_OK;
AdamGreen 0:616601bde9fb 955 }
AdamGreen 0:616601bde9fb 956
AdamGreen 0:616601bde9fb 957 /* Get and set parameters for the given connection.
AdamGreen 0:616601bde9fb 958 * Return 0 on success, an error code on failure. */
AdamGreen 0:616601bde9fb 959 int
AdamGreen 0:616601bde9fb 960 pppIOCtl(int pd, int cmd, void *arg)
AdamGreen 0:616601bde9fb 961 {
AdamGreen 0:616601bde9fb 962 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 963 int st = 0;
AdamGreen 0:616601bde9fb 964
AdamGreen 0:616601bde9fb 965 if (pd < 0 || pd >= NUM_PPP) {
AdamGreen 0:616601bde9fb 966 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 967 } else {
AdamGreen 0:616601bde9fb 968 switch(cmd) {
AdamGreen 0:616601bde9fb 969 case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
AdamGreen 0:616601bde9fb 970 if (arg) {
AdamGreen 0:616601bde9fb 971 *(int *)arg = (int)(pc->if_up);
AdamGreen 0:616601bde9fb 972 } else {
AdamGreen 0:616601bde9fb 973 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 974 }
AdamGreen 0:616601bde9fb 975 break;
AdamGreen 0:616601bde9fb 976 case PPPCTLS_ERRCODE: /* Set the PPP error code. */
AdamGreen 0:616601bde9fb 977 if (arg) {
AdamGreen 0:616601bde9fb 978 pc->errCode = *(int *)arg;
AdamGreen 0:616601bde9fb 979 } else {
AdamGreen 0:616601bde9fb 980 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 981 }
AdamGreen 0:616601bde9fb 982 break;
AdamGreen 0:616601bde9fb 983 case PPPCTLG_ERRCODE: /* Get the PPP error code. */
AdamGreen 0:616601bde9fb 984 if (arg) {
AdamGreen 0:616601bde9fb 985 *(int *)arg = (int)(pc->errCode);
AdamGreen 0:616601bde9fb 986 } else {
AdamGreen 0:616601bde9fb 987 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 988 }
AdamGreen 0:616601bde9fb 989 break;
AdamGreen 0:616601bde9fb 990 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 991 case PPPCTLG_FD: /* Get the fd associated with the ppp */
AdamGreen 0:616601bde9fb 992 if (arg) {
AdamGreen 0:616601bde9fb 993 *(sio_fd_t *)arg = pc->fd;
AdamGreen 0:616601bde9fb 994 } else {
AdamGreen 0:616601bde9fb 995 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 996 }
AdamGreen 0:616601bde9fb 997 break;
AdamGreen 0:616601bde9fb 998 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 999 default:
AdamGreen 0:616601bde9fb 1000 st = PPPERR_PARAM;
AdamGreen 0:616601bde9fb 1001 break;
AdamGreen 0:616601bde9fb 1002 }
AdamGreen 0:616601bde9fb 1003 }
AdamGreen 0:616601bde9fb 1004
AdamGreen 0:616601bde9fb 1005 return st;
AdamGreen 0:616601bde9fb 1006 }
AdamGreen 0:616601bde9fb 1007
AdamGreen 0:616601bde9fb 1008 /*
AdamGreen 0:616601bde9fb 1009 * Return the Maximum Transmission Unit for the given PPP connection.
AdamGreen 0:616601bde9fb 1010 */
AdamGreen 0:616601bde9fb 1011 u_short
AdamGreen 0:616601bde9fb 1012 pppMTU(int pd)
AdamGreen 0:616601bde9fb 1013 {
AdamGreen 0:616601bde9fb 1014 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1015 u_short st;
AdamGreen 0:616601bde9fb 1016
AdamGreen 0:616601bde9fb 1017 /* Validate parameters. */
AdamGreen 0:616601bde9fb 1018 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1019 st = 0;
AdamGreen 0:616601bde9fb 1020 } else {
AdamGreen 0:616601bde9fb 1021 st = pc->mtu;
AdamGreen 0:616601bde9fb 1022 }
AdamGreen 0:616601bde9fb 1023
AdamGreen 0:616601bde9fb 1024 return st;
AdamGreen 0:616601bde9fb 1025 }
AdamGreen 0:616601bde9fb 1026
AdamGreen 0:616601bde9fb 1027 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 1028 int
AdamGreen 0:616601bde9fb 1029 pppWriteOverEthernet(int pd, const u_char *s, int n)
AdamGreen 0:616601bde9fb 1030 {
AdamGreen 0:616601bde9fb 1031 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1032 struct pbuf *pb;
AdamGreen 0:616601bde9fb 1033
AdamGreen 0:616601bde9fb 1034 /* skip address & flags */
AdamGreen 0:616601bde9fb 1035 s += 2;
AdamGreen 0:616601bde9fb 1036 n -= 2;
AdamGreen 0:616601bde9fb 1037
AdamGreen 0:616601bde9fb 1038 LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
AdamGreen 0:616601bde9fb 1039 pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
AdamGreen 0:616601bde9fb 1040 if(!pb) {
AdamGreen 0:616601bde9fb 1041 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 1042 LINK_STATS_INC(link.proterr);
AdamGreen 0:616601bde9fb 1043 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 1044 return PPPERR_ALLOC;
AdamGreen 0:616601bde9fb 1045 }
AdamGreen 0:616601bde9fb 1046
AdamGreen 0:616601bde9fb 1047 pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
AdamGreen 0:616601bde9fb 1048
AdamGreen 0:616601bde9fb 1049 pc->lastXMit = sys_jiffies();
AdamGreen 0:616601bde9fb 1050
AdamGreen 0:616601bde9fb 1051 MEMCPY(pb->payload, s, n);
AdamGreen 0:616601bde9fb 1052
AdamGreen 0:616601bde9fb 1053 if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
AdamGreen 0:616601bde9fb 1054 LINK_STATS_INC(link.err);
AdamGreen 0:616601bde9fb 1055 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 1056 return PPPERR_DEVICE;
AdamGreen 0:616601bde9fb 1057 }
AdamGreen 0:616601bde9fb 1058
AdamGreen 0:616601bde9fb 1059 snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
AdamGreen 0:616601bde9fb 1060 snmp_inc_ifoutucastpkts(&pc->netif);
AdamGreen 0:616601bde9fb 1061 LINK_STATS_INC(link.xmit);
AdamGreen 0:616601bde9fb 1062 return PPPERR_NONE;
AdamGreen 0:616601bde9fb 1063 }
AdamGreen 0:616601bde9fb 1064 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 1065
AdamGreen 0:616601bde9fb 1066 /*
AdamGreen 0:616601bde9fb 1067 * Write n characters to a ppp link.
AdamGreen 0:616601bde9fb 1068 * RETURN: >= 0 Number of characters written
AdamGreen 0:616601bde9fb 1069 * -1 Failed to write to device
AdamGreen 0:616601bde9fb 1070 */
AdamGreen 0:616601bde9fb 1071 int
AdamGreen 0:616601bde9fb 1072 pppWrite(int pd, const u_char *s, int n)
AdamGreen 0:616601bde9fb 1073 {
AdamGreen 0:616601bde9fb 1074 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1075 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 1076 u_char c;
AdamGreen 0:616601bde9fb 1077 u_int fcsOut;
AdamGreen 0:616601bde9fb 1078 struct pbuf *headMB, *tailMB;
AdamGreen 0:616601bde9fb 1079 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 1080
AdamGreen 0:616601bde9fb 1081 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 1082 if(pc->ethif) {
AdamGreen 0:616601bde9fb 1083 return pppWriteOverEthernet(pd, s, n);
AdamGreen 0:616601bde9fb 1084 }
AdamGreen 0:616601bde9fb 1085 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 1086
AdamGreen 0:616601bde9fb 1087 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 1088 headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen 0:616601bde9fb 1089 if (headMB == NULL) {
AdamGreen 0:616601bde9fb 1090 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 1091 LINK_STATS_INC(link.proterr);
AdamGreen 0:616601bde9fb 1092 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 1093 return PPPERR_ALLOC;
AdamGreen 0:616601bde9fb 1094 }
AdamGreen 0:616601bde9fb 1095
AdamGreen 0:616601bde9fb 1096 tailMB = headMB;
AdamGreen 0:616601bde9fb 1097
AdamGreen 0:616601bde9fb 1098 /* If the link has been idle, we'll send a fresh flag character to
AdamGreen 0:616601bde9fb 1099 * flush any noise. */
AdamGreen 0:616601bde9fb 1100 if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
AdamGreen 0:616601bde9fb 1101 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen 0:616601bde9fb 1102 }
AdamGreen 0:616601bde9fb 1103 pc->lastXMit = sys_jiffies();
AdamGreen 0:616601bde9fb 1104
AdamGreen 0:616601bde9fb 1105 fcsOut = PPP_INITFCS;
AdamGreen 0:616601bde9fb 1106 /* Load output buffer. */
AdamGreen 0:616601bde9fb 1107 while (n-- > 0) {
AdamGreen 0:616601bde9fb 1108 c = *s++;
AdamGreen 0:616601bde9fb 1109
AdamGreen 0:616601bde9fb 1110 /* Update FCS before checking for special characters. */
AdamGreen 0:616601bde9fb 1111 fcsOut = PPP_FCS(fcsOut, c);
AdamGreen 0:616601bde9fb 1112
AdamGreen 0:616601bde9fb 1113 /* Copy to output buffer escaping special characters. */
AdamGreen 0:616601bde9fb 1114 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 1115 }
AdamGreen 0:616601bde9fb 1116
AdamGreen 0:616601bde9fb 1117 /* Add FCS and trailing flag. */
AdamGreen 0:616601bde9fb 1118 c = ~fcsOut & 0xFF;
AdamGreen 0:616601bde9fb 1119 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 1120 c = (~fcsOut >> 8) & 0xFF;
AdamGreen 0:616601bde9fb 1121 tailMB = pppAppend(c, tailMB, &pc->outACCM);
AdamGreen 0:616601bde9fb 1122 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
AdamGreen 0:616601bde9fb 1123
AdamGreen 0:616601bde9fb 1124 /* If we failed to complete the packet, throw it away.
AdamGreen 0:616601bde9fb 1125 * Otherwise send it. */
AdamGreen 0:616601bde9fb 1126 if (!tailMB) {
AdamGreen 0:616601bde9fb 1127 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 1128 ("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
AdamGreen 0:616601bde9fb 1129 /*"pppWrite[%d]: Alloc err - dropping %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
AdamGreen 0:616601bde9fb 1130 pbuf_free(headMB);
AdamGreen 0:616601bde9fb 1131 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 1132 LINK_STATS_INC(link.proterr);
AdamGreen 0:616601bde9fb 1133 snmp_inc_ifoutdiscards(&pc->netif);
AdamGreen 0:616601bde9fb 1134 return PPPERR_ALLOC;
AdamGreen 0:616601bde9fb 1135 }
AdamGreen 0:616601bde9fb 1136
AdamGreen 0:616601bde9fb 1137 PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
AdamGreen 0:616601bde9fb 1138 /* "pppWrite[%d]: %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
AdamGreen 0:616601bde9fb 1139 nPut(pc, headMB);
AdamGreen 0:616601bde9fb 1140 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 1141
AdamGreen 0:616601bde9fb 1142 return PPPERR_NONE;
AdamGreen 0:616601bde9fb 1143 }
AdamGreen 0:616601bde9fb 1144
AdamGreen 0:616601bde9fb 1145 /*
AdamGreen 0:616601bde9fb 1146 * ppp_send_config - configure the transmit characteristics of
AdamGreen 0:616601bde9fb 1147 * the ppp interface.
AdamGreen 0:616601bde9fb 1148 */
AdamGreen 0:616601bde9fb 1149 void
AdamGreen 0:616601bde9fb 1150 ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
AdamGreen 0:616601bde9fb 1151 {
AdamGreen 0:616601bde9fb 1152 PPPControl *pc = &pppControl[unit];
AdamGreen 0:616601bde9fb 1153 int i;
AdamGreen 0:616601bde9fb 1154
AdamGreen 0:616601bde9fb 1155 pc->mtu = mtu;
AdamGreen 0:616601bde9fb 1156 pc->pcomp = pcomp;
AdamGreen 0:616601bde9fb 1157 pc->accomp = accomp;
AdamGreen 0:616601bde9fb 1158
AdamGreen 0:616601bde9fb 1159 /* Load the ACCM bits for the 32 control codes. */
AdamGreen 0:616601bde9fb 1160 for (i = 0; i < 32/8; i++) {
AdamGreen 0:616601bde9fb 1161 pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
AdamGreen 0:616601bde9fb 1162 }
AdamGreen 0:616601bde9fb 1163 PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
AdamGreen 0:616601bde9fb 1164 unit,
AdamGreen 0:616601bde9fb 1165 pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
AdamGreen 0:616601bde9fb 1166 }
AdamGreen 0:616601bde9fb 1167
AdamGreen 0:616601bde9fb 1168
AdamGreen 0:616601bde9fb 1169 /*
AdamGreen 0:616601bde9fb 1170 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
AdamGreen 0:616601bde9fb 1171 */
AdamGreen 0:616601bde9fb 1172 void
AdamGreen 0:616601bde9fb 1173 ppp_set_xaccm(int unit, ext_accm *accm)
AdamGreen 0:616601bde9fb 1174 {
AdamGreen 0:616601bde9fb 1175 SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
AdamGreen 0:616601bde9fb 1176 PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
AdamGreen 0:616601bde9fb 1177 unit,
AdamGreen 0:616601bde9fb 1178 pppControl[unit].outACCM[0],
AdamGreen 0:616601bde9fb 1179 pppControl[unit].outACCM[1],
AdamGreen 0:616601bde9fb 1180 pppControl[unit].outACCM[2],
AdamGreen 0:616601bde9fb 1181 pppControl[unit].outACCM[3]));
AdamGreen 0:616601bde9fb 1182 }
AdamGreen 0:616601bde9fb 1183
AdamGreen 0:616601bde9fb 1184
AdamGreen 0:616601bde9fb 1185 /*
AdamGreen 0:616601bde9fb 1186 * ppp_recv_config - configure the receive-side characteristics of
AdamGreen 0:616601bde9fb 1187 * the ppp interface.
AdamGreen 0:616601bde9fb 1188 */
AdamGreen 0:616601bde9fb 1189 void
AdamGreen 0:616601bde9fb 1190 ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
AdamGreen 0:616601bde9fb 1191 {
AdamGreen 0:616601bde9fb 1192 PPPControl *pc = &pppControl[unit];
AdamGreen 0:616601bde9fb 1193 int i;
AdamGreen 0:616601bde9fb 1194 SYS_ARCH_DECL_PROTECT(lev);
AdamGreen 0:616601bde9fb 1195
AdamGreen 0:616601bde9fb 1196 LWIP_UNUSED_ARG(accomp);
AdamGreen 0:616601bde9fb 1197 LWIP_UNUSED_ARG(pcomp);
AdamGreen 0:616601bde9fb 1198 LWIP_UNUSED_ARG(mru);
AdamGreen 0:616601bde9fb 1199
AdamGreen 0:616601bde9fb 1200 /* Load the ACCM bits for the 32 control codes. */
AdamGreen 0:616601bde9fb 1201 SYS_ARCH_PROTECT(lev);
AdamGreen 0:616601bde9fb 1202 for (i = 0; i < 32 / 8; i++) {
AdamGreen 0:616601bde9fb 1203 /* @todo: does this work? ext_accm has been modified from pppd! */
AdamGreen 0:616601bde9fb 1204 pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
AdamGreen 0:616601bde9fb 1205 }
AdamGreen 0:616601bde9fb 1206 SYS_ARCH_UNPROTECT(lev);
AdamGreen 0:616601bde9fb 1207 PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
AdamGreen 0:616601bde9fb 1208 unit,
AdamGreen 0:616601bde9fb 1209 pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
AdamGreen 0:616601bde9fb 1210 }
AdamGreen 0:616601bde9fb 1211
AdamGreen 0:616601bde9fb 1212 #if 0
AdamGreen 0:616601bde9fb 1213 /*
AdamGreen 0:616601bde9fb 1214 * ccp_test - ask kernel whether a given compression method
AdamGreen 0:616601bde9fb 1215 * is acceptable for use. Returns 1 if the method and parameters
AdamGreen 0:616601bde9fb 1216 * are OK, 0 if the method is known but the parameters are not OK
AdamGreen 0:616601bde9fb 1217 * (e.g. code size should be reduced), or -1 if the method is unknown.
AdamGreen 0:616601bde9fb 1218 */
AdamGreen 0:616601bde9fb 1219 int
AdamGreen 0:616601bde9fb 1220 ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
AdamGreen 0:616601bde9fb 1221 {
AdamGreen 0:616601bde9fb 1222 return 0; /* XXX Currently no compression. */
AdamGreen 0:616601bde9fb 1223 }
AdamGreen 0:616601bde9fb 1224
AdamGreen 0:616601bde9fb 1225 /*
AdamGreen 0:616601bde9fb 1226 * ccp_flags_set - inform kernel about the current state of CCP.
AdamGreen 0:616601bde9fb 1227 */
AdamGreen 0:616601bde9fb 1228 void
AdamGreen 0:616601bde9fb 1229 ccp_flags_set(int unit, int isopen, int isup)
AdamGreen 0:616601bde9fb 1230 {
AdamGreen 0:616601bde9fb 1231 /* XXX */
AdamGreen 0:616601bde9fb 1232 }
AdamGreen 0:616601bde9fb 1233
AdamGreen 0:616601bde9fb 1234 /*
AdamGreen 0:616601bde9fb 1235 * ccp_fatal_error - returns 1 if decompression was disabled as a
AdamGreen 0:616601bde9fb 1236 * result of an error detected after decompression of a packet,
AdamGreen 0:616601bde9fb 1237 * 0 otherwise. This is necessary because of patent nonsense.
AdamGreen 0:616601bde9fb 1238 */
AdamGreen 0:616601bde9fb 1239 int
AdamGreen 0:616601bde9fb 1240 ccp_fatal_error(int unit)
AdamGreen 0:616601bde9fb 1241 {
AdamGreen 0:616601bde9fb 1242 /* XXX */
AdamGreen 0:616601bde9fb 1243 return 0;
AdamGreen 0:616601bde9fb 1244 }
AdamGreen 0:616601bde9fb 1245 #endif
AdamGreen 0:616601bde9fb 1246
AdamGreen 0:616601bde9fb 1247 /*
AdamGreen 0:616601bde9fb 1248 * get_idle_time - return how long the link has been idle.
AdamGreen 0:616601bde9fb 1249 */
AdamGreen 0:616601bde9fb 1250 int
AdamGreen 0:616601bde9fb 1251 get_idle_time(int u, struct ppp_idle *ip)
AdamGreen 0:616601bde9fb 1252 {
AdamGreen 0:616601bde9fb 1253 /* XXX */
AdamGreen 0:616601bde9fb 1254 LWIP_UNUSED_ARG(u);
AdamGreen 0:616601bde9fb 1255 LWIP_UNUSED_ARG(ip);
AdamGreen 0:616601bde9fb 1256
AdamGreen 0:616601bde9fb 1257 return 0;
AdamGreen 0:616601bde9fb 1258 }
AdamGreen 0:616601bde9fb 1259
AdamGreen 0:616601bde9fb 1260
AdamGreen 0:616601bde9fb 1261 /*
AdamGreen 0:616601bde9fb 1262 * Return user specified netmask, modified by any mask we might determine
AdamGreen 0:616601bde9fb 1263 * for address `addr' (in network byte order).
AdamGreen 0:616601bde9fb 1264 * Here we scan through the system's list of interfaces, looking for
AdamGreen 0:616601bde9fb 1265 * any non-point-to-point interfaces which might appear to be on the same
AdamGreen 0:616601bde9fb 1266 * network as `addr'. If we find any, we OR in their netmask to the
AdamGreen 0:616601bde9fb 1267 * user-specified netmask.
AdamGreen 0:616601bde9fb 1268 */
AdamGreen 0:616601bde9fb 1269 u32_t
AdamGreen 0:616601bde9fb 1270 GetMask(u32_t addr)
AdamGreen 0:616601bde9fb 1271 {
AdamGreen 0:616601bde9fb 1272 u32_t mask, nmask;
AdamGreen 0:616601bde9fb 1273
AdamGreen 0:616601bde9fb 1274 htonl(addr);
AdamGreen 0:616601bde9fb 1275 if (IP_CLASSA(addr)) { /* determine network mask for address class */
AdamGreen 0:616601bde9fb 1276 nmask = IP_CLASSA_NET;
AdamGreen 0:616601bde9fb 1277 } else if (IP_CLASSB(addr)) {
AdamGreen 0:616601bde9fb 1278 nmask = IP_CLASSB_NET;
AdamGreen 0:616601bde9fb 1279 } else {
AdamGreen 0:616601bde9fb 1280 nmask = IP_CLASSC_NET;
AdamGreen 0:616601bde9fb 1281 }
AdamGreen 0:616601bde9fb 1282
AdamGreen 0:616601bde9fb 1283 /* class D nets are disallowed by bad_ip_adrs */
AdamGreen 0:616601bde9fb 1284 mask = subnetMask | htonl(nmask);
AdamGreen 0:616601bde9fb 1285
AdamGreen 0:616601bde9fb 1286 /* XXX
AdamGreen 0:616601bde9fb 1287 * Scan through the system's network interfaces.
AdamGreen 0:616601bde9fb 1288 * Get each netmask and OR them into our mask.
AdamGreen 0:616601bde9fb 1289 */
AdamGreen 0:616601bde9fb 1290
AdamGreen 0:616601bde9fb 1291 return mask;
AdamGreen 0:616601bde9fb 1292 }
AdamGreen 0:616601bde9fb 1293
AdamGreen 0:616601bde9fb 1294 /*
AdamGreen 0:616601bde9fb 1295 * sifvjcomp - config tcp header compression
AdamGreen 0:616601bde9fb 1296 */
AdamGreen 0:616601bde9fb 1297 int
AdamGreen 0:616601bde9fb 1298 sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
AdamGreen 0:616601bde9fb 1299 {
AdamGreen 0:616601bde9fb 1300 #if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen 0:616601bde9fb 1301 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1302
AdamGreen 0:616601bde9fb 1303 pc->vjEnabled = vjcomp;
AdamGreen 0:616601bde9fb 1304 pc->vjComp.compressSlot = cidcomp;
AdamGreen 0:616601bde9fb 1305 pc->vjComp.maxSlotIndex = maxcid;
AdamGreen 0:616601bde9fb 1306 PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
AdamGreen 0:616601bde9fb 1307 vjcomp, cidcomp, maxcid));
AdamGreen 0:616601bde9fb 1308 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1309 LWIP_UNUSED_ARG(pd);
AdamGreen 0:616601bde9fb 1310 LWIP_UNUSED_ARG(vjcomp);
AdamGreen 0:616601bde9fb 1311 LWIP_UNUSED_ARG(cidcomp);
AdamGreen 0:616601bde9fb 1312 LWIP_UNUSED_ARG(maxcid);
AdamGreen 0:616601bde9fb 1313 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1314
AdamGreen 0:616601bde9fb 1315 return 0;
AdamGreen 0:616601bde9fb 1316 }
AdamGreen 0:616601bde9fb 1317
AdamGreen 0:616601bde9fb 1318 /*
AdamGreen 0:616601bde9fb 1319 * pppifNetifInit - netif init callback
AdamGreen 0:616601bde9fb 1320 */
AdamGreen 0:616601bde9fb 1321 static err_t
AdamGreen 0:616601bde9fb 1322 pppifNetifInit(struct netif *netif)
AdamGreen 0:616601bde9fb 1323 {
AdamGreen 0:616601bde9fb 1324 netif->name[0] = 'p';
AdamGreen 0:616601bde9fb 1325 netif->name[1] = 'p';
AdamGreen 0:616601bde9fb 1326 netif->output = pppifOutput;
AdamGreen 0:616601bde9fb 1327 netif->mtu = pppMTU((int)(size_t)netif->state);
AdamGreen 0:616601bde9fb 1328 netif->flags = NETIF_FLAG_POINTTOPOINT | NETIF_FLAG_LINK_UP;
AdamGreen 0:616601bde9fb 1329 #if LWIP_NETIF_HOSTNAME
AdamGreen 0:616601bde9fb 1330 /* @todo: Initialize interface hostname */
AdamGreen 0:616601bde9fb 1331 /* netif_set_hostname(netif, "lwip"); */
AdamGreen 0:616601bde9fb 1332 #endif /* LWIP_NETIF_HOSTNAME */
AdamGreen 0:616601bde9fb 1333 return ERR_OK;
AdamGreen 0:616601bde9fb 1334 }
AdamGreen 0:616601bde9fb 1335
AdamGreen 0:616601bde9fb 1336
AdamGreen 0:616601bde9fb 1337 /*
AdamGreen 0:616601bde9fb 1338 * sifup - Config the interface up and enable IP packets to pass.
AdamGreen 0:616601bde9fb 1339 */
AdamGreen 0:616601bde9fb 1340 int
AdamGreen 0:616601bde9fb 1341 sifup(int pd)
AdamGreen 0:616601bde9fb 1342 {
AdamGreen 0:616601bde9fb 1343 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1344 int st = 1;
AdamGreen 0:616601bde9fb 1345
AdamGreen 0:616601bde9fb 1346 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1347 st = 0;
AdamGreen 0:616601bde9fb 1348 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1349 } else {
AdamGreen 0:616601bde9fb 1350 netif_remove(&pc->netif);
AdamGreen 0:616601bde9fb 1351 if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
AdamGreen 0:616601bde9fb 1352 &pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
AdamGreen 0:616601bde9fb 1353 netif_set_up(&pc->netif);
AdamGreen 0:616601bde9fb 1354 pc->if_up = 1;
AdamGreen 0:616601bde9fb 1355 pc->errCode = PPPERR_NONE;
AdamGreen 0:616601bde9fb 1356
AdamGreen 0:616601bde9fb 1357 PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen 0:616601bde9fb 1358 if (pc->linkStatusCB) {
AdamGreen 0:616601bde9fb 1359 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
AdamGreen 0:616601bde9fb 1360 }
AdamGreen 0:616601bde9fb 1361 } else {
AdamGreen 0:616601bde9fb 1362 st = 0;
AdamGreen 0:616601bde9fb 1363 PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
AdamGreen 0:616601bde9fb 1364 }
AdamGreen 0:616601bde9fb 1365 }
AdamGreen 0:616601bde9fb 1366
AdamGreen 0:616601bde9fb 1367 return st;
AdamGreen 0:616601bde9fb 1368 }
AdamGreen 0:616601bde9fb 1369
AdamGreen 0:616601bde9fb 1370 /*
AdamGreen 0:616601bde9fb 1371 * sifnpmode - Set the mode for handling packets for a given NP.
AdamGreen 0:616601bde9fb 1372 */
AdamGreen 0:616601bde9fb 1373 int
AdamGreen 0:616601bde9fb 1374 sifnpmode(int u, int proto, enum NPmode mode)
AdamGreen 0:616601bde9fb 1375 {
AdamGreen 0:616601bde9fb 1376 LWIP_UNUSED_ARG(u);
AdamGreen 0:616601bde9fb 1377 LWIP_UNUSED_ARG(proto);
AdamGreen 0:616601bde9fb 1378 LWIP_UNUSED_ARG(mode);
AdamGreen 0:616601bde9fb 1379 return 0;
AdamGreen 0:616601bde9fb 1380 }
AdamGreen 0:616601bde9fb 1381
AdamGreen 0:616601bde9fb 1382 /*
AdamGreen 0:616601bde9fb 1383 * sifdown - Config the interface down and disable IP.
AdamGreen 0:616601bde9fb 1384 */
AdamGreen 0:616601bde9fb 1385 int
AdamGreen 0:616601bde9fb 1386 sifdown(int pd)
AdamGreen 0:616601bde9fb 1387 {
AdamGreen 0:616601bde9fb 1388 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1389 int st = 1;
AdamGreen 0:616601bde9fb 1390
AdamGreen 0:616601bde9fb 1391 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1392 st = 0;
AdamGreen 0:616601bde9fb 1393 PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1394 } else {
AdamGreen 0:616601bde9fb 1395 pc->if_up = 0;
AdamGreen 0:616601bde9fb 1396 /* make sure the netif status callback is called */
AdamGreen 0:616601bde9fb 1397 netif_set_down(&pc->netif);
AdamGreen 0:616601bde9fb 1398 netif_remove(&pc->netif);
AdamGreen 0:616601bde9fb 1399 PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
AdamGreen 0:616601bde9fb 1400 if (pc->linkStatusCB) {
AdamGreen 0:616601bde9fb 1401 pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
AdamGreen 0:616601bde9fb 1402 }
AdamGreen 0:616601bde9fb 1403 }
AdamGreen 0:616601bde9fb 1404 return st;
AdamGreen 0:616601bde9fb 1405 }
AdamGreen 0:616601bde9fb 1406
AdamGreen 0:616601bde9fb 1407 /**
AdamGreen 0:616601bde9fb 1408 * sifaddr - Config the interface IP addresses and netmask.
AdamGreen 0:616601bde9fb 1409 * @param pd Interface unit ???
AdamGreen 0:616601bde9fb 1410 * @param o Our IP address ???
AdamGreen 0:616601bde9fb 1411 * @param h His IP address ???
AdamGreen 0:616601bde9fb 1412 * @param m IP subnet mask ???
AdamGreen 0:616601bde9fb 1413 * @param ns1 Primary DNS
AdamGreen 0:616601bde9fb 1414 * @param ns2 Secondary DNS
AdamGreen 0:616601bde9fb 1415 */
AdamGreen 0:616601bde9fb 1416 int
AdamGreen 0:616601bde9fb 1417 sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
AdamGreen 0:616601bde9fb 1418 {
AdamGreen 0:616601bde9fb 1419 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1420 int st = 1;
AdamGreen 0:616601bde9fb 1421
AdamGreen 0:616601bde9fb 1422 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1423 st = 0;
AdamGreen 0:616601bde9fb 1424 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1425 } else {
AdamGreen 0:616601bde9fb 1426 SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
AdamGreen 0:616601bde9fb 1427 SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
AdamGreen 0:616601bde9fb 1428 SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
AdamGreen 0:616601bde9fb 1429 SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
AdamGreen 0:616601bde9fb 1430 SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
AdamGreen 0:616601bde9fb 1431 }
AdamGreen 0:616601bde9fb 1432 return st;
AdamGreen 0:616601bde9fb 1433 }
AdamGreen 0:616601bde9fb 1434
AdamGreen 0:616601bde9fb 1435 /**
AdamGreen 0:616601bde9fb 1436 * cifaddr - Clear the interface IP addresses, and delete routes
AdamGreen 0:616601bde9fb 1437 * through the interface if possible.
AdamGreen 0:616601bde9fb 1438 * @param pd Interface unit ???
AdamGreen 0:616601bde9fb 1439 * @param o Our IP address ???
AdamGreen 0:616601bde9fb 1440 * @param h IP broadcast address ???
AdamGreen 0:616601bde9fb 1441 */
AdamGreen 0:616601bde9fb 1442 int
AdamGreen 0:616601bde9fb 1443 cifaddr( int pd, u32_t o, u32_t h)
AdamGreen 0:616601bde9fb 1444 {
AdamGreen 0:616601bde9fb 1445 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1446 int st = 1;
AdamGreen 0:616601bde9fb 1447
AdamGreen 0:616601bde9fb 1448 LWIP_UNUSED_ARG(o);
AdamGreen 0:616601bde9fb 1449 LWIP_UNUSED_ARG(h);
AdamGreen 0:616601bde9fb 1450 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1451 st = 0;
AdamGreen 0:616601bde9fb 1452 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1453 } else {
AdamGreen 0:616601bde9fb 1454 IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
AdamGreen 0:616601bde9fb 1455 IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
AdamGreen 0:616601bde9fb 1456 IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
AdamGreen 0:616601bde9fb 1457 IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
AdamGreen 0:616601bde9fb 1458 IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
AdamGreen 0:616601bde9fb 1459 }
AdamGreen 0:616601bde9fb 1460 return st;
AdamGreen 0:616601bde9fb 1461 }
AdamGreen 0:616601bde9fb 1462
AdamGreen 0:616601bde9fb 1463 /*
AdamGreen 0:616601bde9fb 1464 * sifdefaultroute - assign a default route through the address given.
AdamGreen 0:616601bde9fb 1465 */
AdamGreen 0:616601bde9fb 1466 int
AdamGreen 0:616601bde9fb 1467 sifdefaultroute(int pd, u32_t l, u32_t g)
AdamGreen 0:616601bde9fb 1468 {
AdamGreen 0:616601bde9fb 1469 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1470 int st = 1;
AdamGreen 0:616601bde9fb 1471
AdamGreen 0:616601bde9fb 1472 LWIP_UNUSED_ARG(l);
AdamGreen 0:616601bde9fb 1473 LWIP_UNUSED_ARG(g);
AdamGreen 0:616601bde9fb 1474
AdamGreen 0:616601bde9fb 1475 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1476 st = 0;
AdamGreen 0:616601bde9fb 1477 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1478 } else {
AdamGreen 0:616601bde9fb 1479 netif_set_default(&pc->netif);
AdamGreen 0:616601bde9fb 1480 }
AdamGreen 0:616601bde9fb 1481
AdamGreen 0:616601bde9fb 1482 /* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
AdamGreen 0:616601bde9fb 1483
AdamGreen 0:616601bde9fb 1484 return st;
AdamGreen 0:616601bde9fb 1485 }
AdamGreen 0:616601bde9fb 1486
AdamGreen 0:616601bde9fb 1487 /*
AdamGreen 0:616601bde9fb 1488 * cifdefaultroute - delete a default route through the address given.
AdamGreen 0:616601bde9fb 1489 */
AdamGreen 0:616601bde9fb 1490 int
AdamGreen 0:616601bde9fb 1491 cifdefaultroute(int pd, u32_t l, u32_t g)
AdamGreen 0:616601bde9fb 1492 {
AdamGreen 0:616601bde9fb 1493 PPPControl *pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1494 int st = 1;
AdamGreen 0:616601bde9fb 1495
AdamGreen 0:616601bde9fb 1496 LWIP_UNUSED_ARG(l);
AdamGreen 0:616601bde9fb 1497 LWIP_UNUSED_ARG(g);
AdamGreen 0:616601bde9fb 1498
AdamGreen 0:616601bde9fb 1499 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
AdamGreen 0:616601bde9fb 1500 st = 0;
AdamGreen 0:616601bde9fb 1501 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
AdamGreen 0:616601bde9fb 1502 } else {
AdamGreen 0:616601bde9fb 1503 netif_set_default(NULL);
AdamGreen 0:616601bde9fb 1504 }
AdamGreen 0:616601bde9fb 1505
AdamGreen 0:616601bde9fb 1506 return st;
AdamGreen 0:616601bde9fb 1507 }
AdamGreen 0:616601bde9fb 1508
AdamGreen 0:616601bde9fb 1509 /**********************************/
AdamGreen 0:616601bde9fb 1510 /*** LOCAL FUNCTION DEFINITIONS ***/
AdamGreen 0:616601bde9fb 1511 /**********************************/
AdamGreen 0:616601bde9fb 1512
AdamGreen 0:616601bde9fb 1513 #if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
AdamGreen 0:616601bde9fb 1514 /* The main PPP process function. This implements the state machine according
AdamGreen 0:616601bde9fb 1515 * to section 4 of RFC 1661: The Point-To-Point Protocol. */
AdamGreen 0:616601bde9fb 1516 static void
AdamGreen 0:616601bde9fb 1517 pppInputThread(void *arg)
AdamGreen 0:616601bde9fb 1518 {
AdamGreen 0:616601bde9fb 1519 int count;
AdamGreen 0:616601bde9fb 1520 PPPControlRx *pcrx = arg;
AdamGreen 0:616601bde9fb 1521
AdamGreen 0:616601bde9fb 1522 while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
AdamGreen 0:616601bde9fb 1523 count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
AdamGreen 0:616601bde9fb 1524 if(count > 0) {
AdamGreen 0:616601bde9fb 1525 pppInProc(pcrx, pcrx->rxbuf, count);
AdamGreen 0:616601bde9fb 1526 } else {
AdamGreen 0:616601bde9fb 1527 /* nothing received, give other tasks a chance to run */
AdamGreen 0:616601bde9fb 1528 sys_msleep(1);
AdamGreen 0:616601bde9fb 1529 }
AdamGreen 0:616601bde9fb 1530 }
AdamGreen 0:616601bde9fb 1531 }
AdamGreen 0:616601bde9fb 1532 #endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
AdamGreen 0:616601bde9fb 1533
AdamGreen 0:616601bde9fb 1534 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 1535
AdamGreen 0:616601bde9fb 1536 void
AdamGreen 0:616601bde9fb 1537 pppOverEthernetInitFailed(int pd)
AdamGreen 0:616601bde9fb 1538 {
AdamGreen 0:616601bde9fb 1539 PPPControl* pc;
AdamGreen 0:616601bde9fb 1540
AdamGreen 0:616601bde9fb 1541 pppHup(pd);
AdamGreen 0:616601bde9fb 1542 pppStop(pd);
AdamGreen 0:616601bde9fb 1543
AdamGreen 0:616601bde9fb 1544 pc = &pppControl[pd];
AdamGreen 0:616601bde9fb 1545 pppoe_destroy(&pc->netif);
AdamGreen 0:616601bde9fb 1546 pc->openFlag = 0;
AdamGreen 0:616601bde9fb 1547
AdamGreen 0:616601bde9fb 1548 if(pc->linkStatusCB) {
AdamGreen 0:616601bde9fb 1549 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
AdamGreen 0:616601bde9fb 1550 }
AdamGreen 0:616601bde9fb 1551 }
AdamGreen 0:616601bde9fb 1552
AdamGreen 0:616601bde9fb 1553 static void
AdamGreen 0:616601bde9fb 1554 pppOverEthernetLinkStatusCB(int pd, int up)
AdamGreen 0:616601bde9fb 1555 {
AdamGreen 0:616601bde9fb 1556 if(up) {
AdamGreen 0:616601bde9fb 1557 PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
AdamGreen 0:616601bde9fb 1558 pppStart(pd);
AdamGreen 0:616601bde9fb 1559 } else {
AdamGreen 0:616601bde9fb 1560 pppOverEthernetInitFailed(pd);
AdamGreen 0:616601bde9fb 1561 }
AdamGreen 0:616601bde9fb 1562 }
AdamGreen 0:616601bde9fb 1563 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 1564
AdamGreen 0:616601bde9fb 1565 struct pbuf *
AdamGreen 0:616601bde9fb 1566 pppSingleBuf(struct pbuf *p)
AdamGreen 0:616601bde9fb 1567 {
AdamGreen 0:616601bde9fb 1568 struct pbuf *q, *b;
AdamGreen 0:616601bde9fb 1569 u_char *pl;
AdamGreen 0:616601bde9fb 1570
AdamGreen 0:616601bde9fb 1571 if(p->tot_len == p->len) {
AdamGreen 0:616601bde9fb 1572 return p;
AdamGreen 0:616601bde9fb 1573 }
AdamGreen 0:616601bde9fb 1574
AdamGreen 0:616601bde9fb 1575 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
AdamGreen 0:616601bde9fb 1576 if(!q) {
AdamGreen 0:616601bde9fb 1577 PPPDEBUG(LOG_ERR,
AdamGreen 0:616601bde9fb 1578 ("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
AdamGreen 0:616601bde9fb 1579 return p; /* live dangerously */
AdamGreen 0:616601bde9fb 1580 }
AdamGreen 0:616601bde9fb 1581
AdamGreen 0:616601bde9fb 1582 for(b = p, pl = (u_char *) q->payload; b != NULL; b = b->next) {
AdamGreen 0:616601bde9fb 1583 MEMCPY(pl, b->payload, b->len);
AdamGreen 0:616601bde9fb 1584 pl += b->len;
AdamGreen 0:616601bde9fb 1585 }
AdamGreen 0:616601bde9fb 1586
AdamGreen 0:616601bde9fb 1587 pbuf_free(p);
AdamGreen 0:616601bde9fb 1588
AdamGreen 0:616601bde9fb 1589 return q;
AdamGreen 0:616601bde9fb 1590 }
AdamGreen 0:616601bde9fb 1591
AdamGreen 0:616601bde9fb 1592 struct pppInputHeader {
AdamGreen 0:616601bde9fb 1593 int unit;
AdamGreen 0:616601bde9fb 1594 u16_t proto;
AdamGreen 0:616601bde9fb 1595 };
AdamGreen 0:616601bde9fb 1596
AdamGreen 0:616601bde9fb 1597 /*
AdamGreen 0:616601bde9fb 1598 * Pass the processed input packet to the appropriate handler.
AdamGreen 0:616601bde9fb 1599 * This function and all handlers run in the context of the tcpip_thread
AdamGreen 0:616601bde9fb 1600 */
AdamGreen 0:616601bde9fb 1601 static void
AdamGreen 0:616601bde9fb 1602 pppInput(void *arg)
AdamGreen 0:616601bde9fb 1603 {
AdamGreen 0:616601bde9fb 1604 struct pbuf *nb = (struct pbuf *)arg;
AdamGreen 0:616601bde9fb 1605 u16_t protocol;
AdamGreen 0:616601bde9fb 1606 int pd;
AdamGreen 0:616601bde9fb 1607
AdamGreen 0:616601bde9fb 1608 pd = ((struct pppInputHeader *)nb->payload)->unit;
AdamGreen 0:616601bde9fb 1609 protocol = ((struct pppInputHeader *)nb->payload)->proto;
AdamGreen 0:616601bde9fb 1610
AdamGreen 0:616601bde9fb 1611 if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
AdamGreen 0:616601bde9fb 1612 LWIP_ASSERT("pbuf_header failed\n", 0);
AdamGreen 0:616601bde9fb 1613 goto drop;
AdamGreen 0:616601bde9fb 1614 }
AdamGreen 0:616601bde9fb 1615
AdamGreen 0:616601bde9fb 1616 LINK_STATS_INC(link.recv);
AdamGreen 0:616601bde9fb 1617 snmp_inc_ifinucastpkts(&pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1618 snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
AdamGreen 0:616601bde9fb 1619
AdamGreen 0:616601bde9fb 1620 /*
AdamGreen 0:616601bde9fb 1621 * Toss all non-LCP packets unless LCP is OPEN.
AdamGreen 0:616601bde9fb 1622 * Until we get past the authentication phase, toss all packets
AdamGreen 0:616601bde9fb 1623 * except LCP, LQR and authentication packets.
AdamGreen 0:616601bde9fb 1624 */
AdamGreen 0:616601bde9fb 1625 if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
AdamGreen 0:616601bde9fb 1626 if(!((protocol == PPP_LQR) || (protocol == PPP_PAP) || (protocol == PPP_CHAP)) ||
AdamGreen 0:616601bde9fb 1627 (lcp_phase[pd] != PHASE_AUTHENTICATE)) {
AdamGreen 0:616601bde9fb 1628 PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
AdamGreen 0:616601bde9fb 1629 goto drop;
AdamGreen 0:616601bde9fb 1630 }
AdamGreen 0:616601bde9fb 1631 }
AdamGreen 0:616601bde9fb 1632
AdamGreen 0:616601bde9fb 1633 switch(protocol) {
AdamGreen 0:616601bde9fb 1634 case PPP_VJC_COMP: /* VJ compressed TCP */
AdamGreen 0:616601bde9fb 1635 #if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen 0:616601bde9fb 1636 PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
AdamGreen 0:616601bde9fb 1637 /*
AdamGreen 0:616601bde9fb 1638 * Clip off the VJ header and prepend the rebuilt TCP/IP header and
AdamGreen 0:616601bde9fb 1639 * pass the result to IP.
AdamGreen 0:616601bde9fb 1640 */
AdamGreen 0:616601bde9fb 1641 if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
AdamGreen 0:616601bde9fb 1642 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1643 return;
AdamGreen 0:616601bde9fb 1644 }
AdamGreen 0:616601bde9fb 1645 /* Something's wrong so drop it. */
AdamGreen 0:616601bde9fb 1646 PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
AdamGreen 0:616601bde9fb 1647 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1648 /* No handler for this protocol so drop the packet. */
AdamGreen 0:616601bde9fb 1649 PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
AdamGreen 0:616601bde9fb 1650 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1651 break;
AdamGreen 0:616601bde9fb 1652
AdamGreen 0:616601bde9fb 1653 case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
AdamGreen 0:616601bde9fb 1654 #if PPPOS_SUPPORT && VJ_SUPPORT
AdamGreen 0:616601bde9fb 1655 PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
AdamGreen 0:616601bde9fb 1656 /*
AdamGreen 0:616601bde9fb 1657 * Process the TCP/IP header for VJ header compression and then pass
AdamGreen 0:616601bde9fb 1658 * the packet to IP.
AdamGreen 0:616601bde9fb 1659 */
AdamGreen 0:616601bde9fb 1660 if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
AdamGreen 0:616601bde9fb 1661 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1662 return;
AdamGreen 0:616601bde9fb 1663 }
AdamGreen 0:616601bde9fb 1664 /* Something's wrong so drop it. */
AdamGreen 0:616601bde9fb 1665 PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
AdamGreen 0:616601bde9fb 1666 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1667 /* No handler for this protocol so drop the packet. */
AdamGreen 0:616601bde9fb 1668 PPPDEBUG(LOG_INFO,
AdamGreen 0:616601bde9fb 1669 ("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
AdamGreen 0:616601bde9fb 1670 pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
AdamGreen 0:616601bde9fb 1671 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1672 break;
AdamGreen 0:616601bde9fb 1673
AdamGreen 0:616601bde9fb 1674 case PPP_IP: /* Internet Protocol */
AdamGreen 0:616601bde9fb 1675 PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
AdamGreen 0:616601bde9fb 1676 if (pppControl[pd].netif.input) {
AdamGreen 0:616601bde9fb 1677 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1678 return;
AdamGreen 0:616601bde9fb 1679 }
AdamGreen 0:616601bde9fb 1680 break;
AdamGreen 0:616601bde9fb 1681
AdamGreen 0:616601bde9fb 1682 default: {
AdamGreen 0:616601bde9fb 1683 struct protent *protp;
AdamGreen 0:616601bde9fb 1684 int i;
AdamGreen 0:616601bde9fb 1685
AdamGreen 0:616601bde9fb 1686 /*
AdamGreen 0:616601bde9fb 1687 * Upcall the proper protocol input routine.
AdamGreen 0:616601bde9fb 1688 */
AdamGreen 0:616601bde9fb 1689 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
AdamGreen 0:616601bde9fb 1690 if (protp->protocol == protocol && protp->enabled_flag) {
AdamGreen 0:616601bde9fb 1691 PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
AdamGreen 0:616601bde9fb 1692 nb = pppSingleBuf(nb);
AdamGreen 0:616601bde9fb 1693 (*protp->input)(pd, (u_char *)nb->payload, nb->len);
AdamGreen 0:616601bde9fb 1694 PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
AdamGreen 0:616601bde9fb 1695 goto out;
AdamGreen 0:616601bde9fb 1696 }
AdamGreen 0:616601bde9fb 1697 }
AdamGreen 0:616601bde9fb 1698
AdamGreen 0:616601bde9fb 1699 /* No handler for this protocol so reject the packet. */
AdamGreen 0:616601bde9fb 1700 PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
AdamGreen 0:616601bde9fb 1701 if (pbuf_header(nb, sizeof(protocol))) {
AdamGreen 0:616601bde9fb 1702 LWIP_ASSERT("pbuf_header failed\n", 0);
AdamGreen 0:616601bde9fb 1703 goto drop;
AdamGreen 0:616601bde9fb 1704 }
AdamGreen 0:616601bde9fb 1705 #if BYTE_ORDER == LITTLE_ENDIAN
AdamGreen 0:616601bde9fb 1706 protocol = htons(protocol);
AdamGreen 0:616601bde9fb 1707 SMEMCPY(nb->payload, &protocol, sizeof(protocol));
AdamGreen 0:616601bde9fb 1708 #endif /* BYTE_ORDER == LITTLE_ENDIAN */
AdamGreen 0:616601bde9fb 1709 lcp_sprotrej(pd, (u_char *)nb->payload, nb->len);
AdamGreen 0:616601bde9fb 1710 }
AdamGreen 0:616601bde9fb 1711 break;
AdamGreen 0:616601bde9fb 1712 }
AdamGreen 0:616601bde9fb 1713
AdamGreen 0:616601bde9fb 1714 drop:
AdamGreen 0:616601bde9fb 1715 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 1716 snmp_inc_ifindiscards(&pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1717
AdamGreen 0:616601bde9fb 1718 out:
AdamGreen 0:616601bde9fb 1719 pbuf_free(nb);
AdamGreen 0:616601bde9fb 1720 return;
AdamGreen 0:616601bde9fb 1721 }
AdamGreen 0:616601bde9fb 1722
AdamGreen 0:616601bde9fb 1723 #if PPPOS_SUPPORT
AdamGreen 0:616601bde9fb 1724 /*
AdamGreen 0:616601bde9fb 1725 * Drop the input packet.
AdamGreen 0:616601bde9fb 1726 */
AdamGreen 0:616601bde9fb 1727 static void
AdamGreen 0:616601bde9fb 1728 pppDrop(PPPControlRx *pcrx)
AdamGreen 0:616601bde9fb 1729 {
AdamGreen 0:616601bde9fb 1730 if (pcrx->inHead != NULL) {
AdamGreen 0:616601bde9fb 1731 #if 0
AdamGreen 0:616601bde9fb 1732 PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.*H\n", pcrx->inHead->len, min(60, pcrx->inHead->len * 2), pcrx->inHead->payload));
AdamGreen 0:616601bde9fb 1733 #endif
AdamGreen 0:616601bde9fb 1734 PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
AdamGreen 0:616601bde9fb 1735 if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
AdamGreen 0:616601bde9fb 1736 pbuf_free(pcrx->inTail);
AdamGreen 0:616601bde9fb 1737 }
AdamGreen 0:616601bde9fb 1738 pbuf_free(pcrx->inHead);
AdamGreen 0:616601bde9fb 1739 pcrx->inHead = NULL;
AdamGreen 0:616601bde9fb 1740 pcrx->inTail = NULL;
AdamGreen 0:616601bde9fb 1741 }
AdamGreen 0:616601bde9fb 1742 #if VJ_SUPPORT
AdamGreen 0:616601bde9fb 1743 vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
AdamGreen 0:616601bde9fb 1744 #endif /* VJ_SUPPORT */
AdamGreen 0:616601bde9fb 1745
AdamGreen 0:616601bde9fb 1746 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 1747 snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
AdamGreen 0:616601bde9fb 1748 }
AdamGreen 0:616601bde9fb 1749
AdamGreen 0:616601bde9fb 1750 /** Pass received raw characters to PPPoS to be decoded. This function is
AdamGreen 0:616601bde9fb 1751 * thread-safe and can be called from a dedicated RX-thread or from a main-loop.
AdamGreen 0:616601bde9fb 1752 *
AdamGreen 0:616601bde9fb 1753 * @param pd PPP descriptor index, returned by pppOpen()
AdamGreen 0:616601bde9fb 1754 * @param data received data
AdamGreen 0:616601bde9fb 1755 * @param len length of received data
AdamGreen 0:616601bde9fb 1756 */
AdamGreen 0:616601bde9fb 1757 void
AdamGreen 0:616601bde9fb 1758 pppos_input(int pd, u_char* data, int len)
AdamGreen 0:616601bde9fb 1759 {
AdamGreen 0:616601bde9fb 1760 pppInProc(&pppControl[pd].rx, data, len);
AdamGreen 0:616601bde9fb 1761 }
AdamGreen 0:616601bde9fb 1762
AdamGreen 0:616601bde9fb 1763 /**
AdamGreen 0:616601bde9fb 1764 * Process a received octet string.
AdamGreen 0:616601bde9fb 1765 */
AdamGreen 0:616601bde9fb 1766 static void
AdamGreen 0:616601bde9fb 1767 pppInProc(PPPControlRx *pcrx, u_char *s, int l)
AdamGreen 0:616601bde9fb 1768 {
AdamGreen 0:616601bde9fb 1769 struct pbuf *nextNBuf;
AdamGreen 0:616601bde9fb 1770 u_char curChar;
AdamGreen 0:616601bde9fb 1771 u_char escaped;
AdamGreen 0:616601bde9fb 1772 SYS_ARCH_DECL_PROTECT(lev);
AdamGreen 0:616601bde9fb 1773
AdamGreen 0:616601bde9fb 1774 PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
AdamGreen 0:616601bde9fb 1775 while (l-- > 0) {
AdamGreen 0:616601bde9fb 1776 curChar = *s++;
AdamGreen 0:616601bde9fb 1777
AdamGreen 0:616601bde9fb 1778 SYS_ARCH_PROTECT(lev);
AdamGreen 0:616601bde9fb 1779 escaped = ESCAPE_P(pcrx->inACCM, curChar);
AdamGreen 0:616601bde9fb 1780 SYS_ARCH_UNPROTECT(lev);
AdamGreen 0:616601bde9fb 1781 /* Handle special characters. */
AdamGreen 0:616601bde9fb 1782 if (escaped) {
AdamGreen 0:616601bde9fb 1783 /* Check for escape sequences. */
AdamGreen 0:616601bde9fb 1784 /* XXX Note that this does not handle an escaped 0x5d character which
AdamGreen 0:616601bde9fb 1785 * would appear as an escape character. Since this is an ASCII ']'
AdamGreen 0:616601bde9fb 1786 * and there is no reason that I know of to escape it, I won't complicate
AdamGreen 0:616601bde9fb 1787 * the code to handle this case. GLL */
AdamGreen 0:616601bde9fb 1788 if (curChar == PPP_ESCAPE) {
AdamGreen 0:616601bde9fb 1789 pcrx->inEscaped = 1;
AdamGreen 0:616601bde9fb 1790 /* Check for the flag character. */
AdamGreen 0:616601bde9fb 1791 } else if (curChar == PPP_FLAG) {
AdamGreen 0:616601bde9fb 1792 /* If this is just an extra flag character, ignore it. */
AdamGreen 0:616601bde9fb 1793 if (pcrx->inState <= PDADDRESS) {
AdamGreen 0:616601bde9fb 1794 /* ignore it */;
AdamGreen 0:616601bde9fb 1795 /* If we haven't received the packet header, drop what has come in. */
AdamGreen 0:616601bde9fb 1796 } else if (pcrx->inState < PDDATA) {
AdamGreen 0:616601bde9fb 1797 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 1798 ("pppInProc[%d]: Dropping incomplete packet %d\n",
AdamGreen 0:616601bde9fb 1799 pcrx->pd, pcrx->inState));
AdamGreen 0:616601bde9fb 1800 LINK_STATS_INC(link.lenerr);
AdamGreen 0:616601bde9fb 1801 pppDrop(pcrx);
AdamGreen 0:616601bde9fb 1802 /* If the fcs is invalid, drop the packet. */
AdamGreen 0:616601bde9fb 1803 } else if (pcrx->inFCS != PPP_GOODFCS) {
AdamGreen 0:616601bde9fb 1804 PPPDEBUG(LOG_INFO,
AdamGreen 0:616601bde9fb 1805 ("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
AdamGreen 0:616601bde9fb 1806 pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
AdamGreen 0:616601bde9fb 1807 /* Note: If you get lots of these, check for UART frame errors or try different baud rate */
AdamGreen 0:616601bde9fb 1808 LINK_STATS_INC(link.chkerr);
AdamGreen 0:616601bde9fb 1809 pppDrop(pcrx);
AdamGreen 0:616601bde9fb 1810 /* Otherwise it's a good packet so pass it on. */
AdamGreen 0:616601bde9fb 1811 } else {
AdamGreen 0:616601bde9fb 1812 /* Trim off the checksum. */
AdamGreen 0:616601bde9fb 1813 if(pcrx->inTail->len >= 2) {
AdamGreen 0:616601bde9fb 1814 pcrx->inTail->len -= 2;
AdamGreen 0:616601bde9fb 1815
AdamGreen 0:616601bde9fb 1816 pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen 0:616601bde9fb 1817 if (pcrx->inTail != pcrx->inHead) {
AdamGreen 0:616601bde9fb 1818 pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen 0:616601bde9fb 1819 }
AdamGreen 0:616601bde9fb 1820 } else {
AdamGreen 0:616601bde9fb 1821 pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen 0:616601bde9fb 1822 if (pcrx->inTail != pcrx->inHead) {
AdamGreen 0:616601bde9fb 1823 pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen 0:616601bde9fb 1824 }
AdamGreen 0:616601bde9fb 1825
AdamGreen 0:616601bde9fb 1826 pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
AdamGreen 0:616601bde9fb 1827 }
AdamGreen 0:616601bde9fb 1828
AdamGreen 0:616601bde9fb 1829 /* Dispatch the packet thereby consuming it. */
AdamGreen 0:616601bde9fb 1830 #if PPP_INPROC_MULTITHREADED
AdamGreen 0:616601bde9fb 1831 if(tcpip_callback_with_block(pppInput, pcrx->inHead, 0) != ERR_OK) {
AdamGreen 0:616601bde9fb 1832 PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
AdamGreen 0:616601bde9fb 1833 pbuf_free(pcrx->inHead);
AdamGreen 0:616601bde9fb 1834 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 1835 snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
AdamGreen 0:616601bde9fb 1836 }
AdamGreen 0:616601bde9fb 1837 #else /* PPP_INPROC_MULTITHREADED */
AdamGreen 0:616601bde9fb 1838 pppInput(pcrx->inHead);
AdamGreen 0:616601bde9fb 1839 #endif /* PPP_INPROC_MULTITHREADED */
AdamGreen 0:616601bde9fb 1840 pcrx->inHead = NULL;
AdamGreen 0:616601bde9fb 1841 pcrx->inTail = NULL;
AdamGreen 0:616601bde9fb 1842 }
AdamGreen 0:616601bde9fb 1843
AdamGreen 0:616601bde9fb 1844 /* Prepare for a new packet. */
AdamGreen 0:616601bde9fb 1845 pcrx->inFCS = PPP_INITFCS;
AdamGreen 0:616601bde9fb 1846 pcrx->inState = PDADDRESS;
AdamGreen 0:616601bde9fb 1847 pcrx->inEscaped = 0;
AdamGreen 0:616601bde9fb 1848 /* Other characters are usually control characters that may have
AdamGreen 0:616601bde9fb 1849 * been inserted by the physical layer so here we just drop them. */
AdamGreen 0:616601bde9fb 1850 } else {
AdamGreen 0:616601bde9fb 1851 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 1852 ("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
AdamGreen 0:616601bde9fb 1853 }
AdamGreen 0:616601bde9fb 1854 /* Process other characters. */
AdamGreen 0:616601bde9fb 1855 } else {
AdamGreen 0:616601bde9fb 1856 /* Unencode escaped characters. */
AdamGreen 0:616601bde9fb 1857 if (pcrx->inEscaped) {
AdamGreen 0:616601bde9fb 1858 pcrx->inEscaped = 0;
AdamGreen 0:616601bde9fb 1859 curChar ^= PPP_TRANS;
AdamGreen 0:616601bde9fb 1860 }
AdamGreen 0:616601bde9fb 1861
AdamGreen 0:616601bde9fb 1862 /* Process character relative to current state. */
AdamGreen 0:616601bde9fb 1863 switch(pcrx->inState) {
AdamGreen 0:616601bde9fb 1864 case PDIDLE: /* Idle state - waiting. */
AdamGreen 0:616601bde9fb 1865 /* Drop the character if it's not 0xff
AdamGreen 0:616601bde9fb 1866 * we would have processed a flag character above. */
AdamGreen 0:616601bde9fb 1867 if (curChar != PPP_ALLSTATIONS) {
AdamGreen 0:616601bde9fb 1868 break;
AdamGreen 0:616601bde9fb 1869 }
AdamGreen 0:616601bde9fb 1870
AdamGreen 0:616601bde9fb 1871 /* Fall through */
AdamGreen 0:616601bde9fb 1872 case PDSTART: /* Process start flag. */
AdamGreen 0:616601bde9fb 1873 /* Prepare for a new packet. */
AdamGreen 0:616601bde9fb 1874 pcrx->inFCS = PPP_INITFCS;
AdamGreen 0:616601bde9fb 1875
AdamGreen 0:616601bde9fb 1876 /* Fall through */
AdamGreen 0:616601bde9fb 1877 case PDADDRESS: /* Process address field. */
AdamGreen 0:616601bde9fb 1878 if (curChar == PPP_ALLSTATIONS) {
AdamGreen 0:616601bde9fb 1879 pcrx->inState = PDCONTROL;
AdamGreen 0:616601bde9fb 1880 break;
AdamGreen 0:616601bde9fb 1881 }
AdamGreen 0:616601bde9fb 1882 /* Else assume compressed address and control fields so
AdamGreen 0:616601bde9fb 1883 * fall through to get the protocol... */
AdamGreen 0:616601bde9fb 1884 case PDCONTROL: /* Process control field. */
AdamGreen 0:616601bde9fb 1885 /* If we don't get a valid control code, restart. */
AdamGreen 0:616601bde9fb 1886 if (curChar == PPP_UI) {
AdamGreen 0:616601bde9fb 1887 pcrx->inState = PDPROTOCOL1;
AdamGreen 0:616601bde9fb 1888 break;
AdamGreen 0:616601bde9fb 1889 }
AdamGreen 0:616601bde9fb 1890 #if 0
AdamGreen 0:616601bde9fb 1891 else {
AdamGreen 0:616601bde9fb 1892 PPPDEBUG(LOG_WARNING,
AdamGreen 0:616601bde9fb 1893 ("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
AdamGreen 0:616601bde9fb 1894 pcrx->inState = PDSTART;
AdamGreen 0:616601bde9fb 1895 }
AdamGreen 0:616601bde9fb 1896 #endif
AdamGreen 0:616601bde9fb 1897 case PDPROTOCOL1: /* Process protocol field 1. */
AdamGreen 0:616601bde9fb 1898 /* If the lower bit is set, this is the end of the protocol
AdamGreen 0:616601bde9fb 1899 * field. */
AdamGreen 0:616601bde9fb 1900 if (curChar & 1) {
AdamGreen 0:616601bde9fb 1901 pcrx->inProtocol = curChar;
AdamGreen 0:616601bde9fb 1902 pcrx->inState = PDDATA;
AdamGreen 0:616601bde9fb 1903 } else {
AdamGreen 0:616601bde9fb 1904 pcrx->inProtocol = (u_int)curChar << 8;
AdamGreen 0:616601bde9fb 1905 pcrx->inState = PDPROTOCOL2;
AdamGreen 0:616601bde9fb 1906 }
AdamGreen 0:616601bde9fb 1907 break;
AdamGreen 0:616601bde9fb 1908 case PDPROTOCOL2: /* Process protocol field 2. */
AdamGreen 0:616601bde9fb 1909 pcrx->inProtocol |= curChar;
AdamGreen 0:616601bde9fb 1910 pcrx->inState = PDDATA;
AdamGreen 0:616601bde9fb 1911 break;
AdamGreen 0:616601bde9fb 1912 case PDDATA: /* Process data byte. */
AdamGreen 0:616601bde9fb 1913 /* Make space to receive processed data. */
AdamGreen 0:616601bde9fb 1914 if (pcrx->inTail == NULL || pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
AdamGreen 0:616601bde9fb 1915 if(pcrx->inTail) {
AdamGreen 0:616601bde9fb 1916 pcrx->inTail->tot_len = pcrx->inTail->len;
AdamGreen 0:616601bde9fb 1917 if (pcrx->inTail != pcrx->inHead) {
AdamGreen 0:616601bde9fb 1918 pbuf_cat(pcrx->inHead, pcrx->inTail);
AdamGreen 0:616601bde9fb 1919 }
AdamGreen 0:616601bde9fb 1920 }
AdamGreen 0:616601bde9fb 1921 /* If we haven't started a packet, we need a packet header. */
AdamGreen 0:616601bde9fb 1922 nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
AdamGreen 0:616601bde9fb 1923 if (nextNBuf == NULL) {
AdamGreen 0:616601bde9fb 1924 /* No free buffers. Drop the input packet and let the
AdamGreen 0:616601bde9fb 1925 * higher layers deal with it. Continue processing
AdamGreen 0:616601bde9fb 1926 * the received pbuf chain in case a new packet starts. */
AdamGreen 0:616601bde9fb 1927 PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
AdamGreen 0:616601bde9fb 1928 LINK_STATS_INC(link.memerr);
AdamGreen 0:616601bde9fb 1929 pppDrop(pcrx);
AdamGreen 0:616601bde9fb 1930 pcrx->inState = PDSTART; /* Wait for flag sequence. */
AdamGreen 0:616601bde9fb 1931 break;
AdamGreen 0:616601bde9fb 1932 }
AdamGreen 0:616601bde9fb 1933 if (pcrx->inHead == NULL) {
AdamGreen 0:616601bde9fb 1934 struct pppInputHeader *pih = (struct pppInputHeader *)nextNBuf->payload;
AdamGreen 0:616601bde9fb 1935
AdamGreen 0:616601bde9fb 1936 pih->unit = pcrx->pd;
AdamGreen 0:616601bde9fb 1937 pih->proto = pcrx->inProtocol;
AdamGreen 0:616601bde9fb 1938
AdamGreen 0:616601bde9fb 1939 nextNBuf->len += sizeof(*pih);
AdamGreen 0:616601bde9fb 1940
AdamGreen 0:616601bde9fb 1941 pcrx->inHead = nextNBuf;
AdamGreen 0:616601bde9fb 1942 }
AdamGreen 0:616601bde9fb 1943 pcrx->inTail = nextNBuf;
AdamGreen 0:616601bde9fb 1944 }
AdamGreen 0:616601bde9fb 1945 /* Load character into buffer. */
AdamGreen 0:616601bde9fb 1946 ((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
AdamGreen 0:616601bde9fb 1947 break;
AdamGreen 0:616601bde9fb 1948 }
AdamGreen 0:616601bde9fb 1949
AdamGreen 0:616601bde9fb 1950 /* update the frame check sequence number. */
AdamGreen 0:616601bde9fb 1951 pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
AdamGreen 0:616601bde9fb 1952 }
AdamGreen 0:616601bde9fb 1953 } /* while (l-- > 0), all bytes processed */
AdamGreen 0:616601bde9fb 1954
AdamGreen 0:616601bde9fb 1955 avRandomize();
AdamGreen 0:616601bde9fb 1956 }
AdamGreen 0:616601bde9fb 1957 #endif /* PPPOS_SUPPORT */
AdamGreen 0:616601bde9fb 1958
AdamGreen 0:616601bde9fb 1959 #if PPPOE_SUPPORT
AdamGreen 0:616601bde9fb 1960 void
AdamGreen 0:616601bde9fb 1961 pppInProcOverEthernet(int pd, struct pbuf *pb)
AdamGreen 0:616601bde9fb 1962 {
AdamGreen 0:616601bde9fb 1963 struct pppInputHeader *pih;
AdamGreen 0:616601bde9fb 1964 u16_t inProtocol;
AdamGreen 0:616601bde9fb 1965
AdamGreen 0:616601bde9fb 1966 if(pb->len < sizeof(inProtocol)) {
AdamGreen 0:616601bde9fb 1967 PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
AdamGreen 0:616601bde9fb 1968 goto drop;
AdamGreen 0:616601bde9fb 1969 }
AdamGreen 0:616601bde9fb 1970
AdamGreen 0:616601bde9fb 1971 inProtocol = (((u8_t *)pb->payload)[0] << 8) | ((u8_t*)pb->payload)[1];
AdamGreen 0:616601bde9fb 1972
AdamGreen 0:616601bde9fb 1973 /* make room for pppInputHeader - should not fail */
AdamGreen 0:616601bde9fb 1974 if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
AdamGreen 0:616601bde9fb 1975 PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
AdamGreen 0:616601bde9fb 1976 goto drop;
AdamGreen 0:616601bde9fb 1977 }
AdamGreen 0:616601bde9fb 1978
AdamGreen 0:616601bde9fb 1979 pih = pb->payload;
AdamGreen 0:616601bde9fb 1980
AdamGreen 0:616601bde9fb 1981 pih->unit = pd;
AdamGreen 0:616601bde9fb 1982 pih->proto = inProtocol;
AdamGreen 0:616601bde9fb 1983
AdamGreen 0:616601bde9fb 1984 /* Dispatch the packet thereby consuming it. */
AdamGreen 0:616601bde9fb 1985 pppInput(pb);
AdamGreen 0:616601bde9fb 1986 return;
AdamGreen 0:616601bde9fb 1987
AdamGreen 0:616601bde9fb 1988 drop:
AdamGreen 0:616601bde9fb 1989 LINK_STATS_INC(link.drop);
AdamGreen 0:616601bde9fb 1990 snmp_inc_ifindiscards(&pppControl[pd].netif);
AdamGreen 0:616601bde9fb 1991 pbuf_free(pb);
AdamGreen 0:616601bde9fb 1992 return;
AdamGreen 0:616601bde9fb 1993 }
AdamGreen 0:616601bde9fb 1994 #endif /* PPPOE_SUPPORT */
AdamGreen 0:616601bde9fb 1995
AdamGreen 0:616601bde9fb 1996 #if LWIP_NETIF_STATUS_CALLBACK
AdamGreen 0:616601bde9fb 1997 /** Set the status callback of a PPP's netif
AdamGreen 0:616601bde9fb 1998 *
AdamGreen 0:616601bde9fb 1999 * @param pd The PPP descriptor returned by pppOpen()
AdamGreen 0:616601bde9fb 2000 * @param status_callback pointer to the status callback function
AdamGreen 0:616601bde9fb 2001 *
AdamGreen 0:616601bde9fb 2002 * @see netif_set_status_callback
AdamGreen 0:616601bde9fb 2003 */
AdamGreen 0:616601bde9fb 2004 void
AdamGreen 0:616601bde9fb 2005 ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
AdamGreen 0:616601bde9fb 2006 {
AdamGreen 0:616601bde9fb 2007 netif_set_status_callback(&pppControl[pd].netif, status_callback);
AdamGreen 0:616601bde9fb 2008 }
AdamGreen 0:616601bde9fb 2009 #endif /* LWIP_NETIF_STATUS_CALLBACK */
AdamGreen 0:616601bde9fb 2010
AdamGreen 0:616601bde9fb 2011 #if LWIP_NETIF_LINK_CALLBACK
AdamGreen 0:616601bde9fb 2012 /** Set the link callback of a PPP's netif
AdamGreen 0:616601bde9fb 2013 *
AdamGreen 0:616601bde9fb 2014 * @param pd The PPP descriptor returned by pppOpen()
AdamGreen 0:616601bde9fb 2015 * @param link_callback pointer to the link callback function
AdamGreen 0:616601bde9fb 2016 *
AdamGreen 0:616601bde9fb 2017 * @see netif_set_link_callback
AdamGreen 0:616601bde9fb 2018 */
AdamGreen 0:616601bde9fb 2019 void
AdamGreen 0:616601bde9fb 2020 ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
AdamGreen 0:616601bde9fb 2021 {
AdamGreen 0:616601bde9fb 2022 netif_set_link_callback(&pppControl[pd].netif, link_callback);
AdamGreen 0:616601bde9fb 2023 }
AdamGreen 0:616601bde9fb 2024 #endif /* LWIP_NETIF_LINK_CALLBACK */
AdamGreen 0:616601bde9fb 2025
AdamGreen 0:616601bde9fb 2026 #endif /* PPP_SUPPORT */