孙 毅明 / Mbed 2 deprecated 123

创建mbed

Dependencies:   EthernetInterface SDFileSystem mbed-rtos mbed

EthernetInterface/lwip/netif/ppp/ppp.c@1:6465a3f5c58a, 2018-03-06 (annotated)

Committer:
sunyiming
Date:
Tue Mar 06 08:53:46 2018 +0000
Revision:
1:6465a3f5c58a
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunyiming 1:6465a3f5c58a 1 /*****************************************************************************
sunyiming 1:6465a3f5c58a 2 * ppp.c - Network Point to Point Protocol program file.
sunyiming 1:6465a3f5c58a 3 *
sunyiming 1:6465a3f5c58a 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
sunyiming 1:6465a3f5c58a 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
sunyiming 1:6465a3f5c58a 6 *
sunyiming 1:6465a3f5c58a 7 * The authors hereby grant permission to use, copy, modify, distribute,
sunyiming 1:6465a3f5c58a 8 * and license this software and its documentation for any purpose, provided
sunyiming 1:6465a3f5c58a 9 * that existing copyright notices are retained in all copies and that this
sunyiming 1:6465a3f5c58a 10 * notice and the following disclaimer are included verbatim in any
sunyiming 1:6465a3f5c58a 11 * distributions. No written agreement, license, or royalty fee is required
sunyiming 1:6465a3f5c58a 12 * for any of the authorized uses.
sunyiming 1:6465a3f5c58a 13 *
sunyiming 1:6465a3f5c58a 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
sunyiming 1:6465a3f5c58a 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
sunyiming 1:6465a3f5c58a 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
sunyiming 1:6465a3f5c58a 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sunyiming 1:6465a3f5c58a 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
sunyiming 1:6465a3f5c58a 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
sunyiming 1:6465a3f5c58a 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
sunyiming 1:6465a3f5c58a 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
sunyiming 1:6465a3f5c58a 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sunyiming 1:6465a3f5c58a 24 *
sunyiming 1:6465a3f5c58a 25 ******************************************************************************
sunyiming 1:6465a3f5c58a 26 * REVISION HISTORY
sunyiming 1:6465a3f5c58a 27 *
sunyiming 1:6465a3f5c58a 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
sunyiming 1:6465a3f5c58a 29 * Ported to lwIP.
sunyiming 1:6465a3f5c58a 30 * 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
sunyiming 1:6465a3f5c58a 31 * Original.
sunyiming 1:6465a3f5c58a 32 *****************************************************************************/
sunyiming 1:6465a3f5c58a 33
sunyiming 1:6465a3f5c58a 34 /*
sunyiming 1:6465a3f5c58a 35 * ppp_defs.h - PPP definitions.
sunyiming 1:6465a3f5c58a 36 *
sunyiming 1:6465a3f5c58a 37 * if_pppvar.h - private structures and declarations for PPP.
sunyiming 1:6465a3f5c58a 38 *
sunyiming 1:6465a3f5c58a 39 * Copyright (c) 1994 The Australian National University.
sunyiming 1:6465a3f5c58a 40 * All rights reserved.
sunyiming 1:6465a3f5c58a 41 *
sunyiming 1:6465a3f5c58a 42 * Permission to use, copy, modify, and distribute this software and its
sunyiming 1:6465a3f5c58a 43 * documentation is hereby granted, provided that the above copyright
sunyiming 1:6465a3f5c58a 44 * notice appears in all copies. This software is provided without any
sunyiming 1:6465a3f5c58a 45 * warranty, express or implied. The Australian National University
sunyiming 1:6465a3f5c58a 46 * makes no representations about the suitability of this software for
sunyiming 1:6465a3f5c58a 47 * any purpose.
sunyiming 1:6465a3f5c58a 48 *
sunyiming 1:6465a3f5c58a 49 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
sunyiming 1:6465a3f5c58a 50 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
sunyiming 1:6465a3f5c58a 51 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
sunyiming 1:6465a3f5c58a 52 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
sunyiming 1:6465a3f5c58a 53 * OF SUCH DAMAGE.
sunyiming 1:6465a3f5c58a 54 *
sunyiming 1:6465a3f5c58a 55 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
sunyiming 1:6465a3f5c58a 56 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
sunyiming 1:6465a3f5c58a 57 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
sunyiming 1:6465a3f5c58a 58 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
sunyiming 1:6465a3f5c58a 59 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
sunyiming 1:6465a3f5c58a 60 * OR MODIFICATIONS.
sunyiming 1:6465a3f5c58a 61 */
sunyiming 1:6465a3f5c58a 62
sunyiming 1:6465a3f5c58a 63 /*
sunyiming 1:6465a3f5c58a 64 * if_ppp.h - Point-to-Point Protocol definitions.
sunyiming 1:6465a3f5c58a 65 *
sunyiming 1:6465a3f5c58a 66 * Copyright (c) 1989 Carnegie Mellon University.
sunyiming 1:6465a3f5c58a 67 * All rights reserved.
sunyiming 1:6465a3f5c58a 68 *
sunyiming 1:6465a3f5c58a 69 * Redistribution and use in source and binary forms are permitted
sunyiming 1:6465a3f5c58a 70 * provided that the above copyright notice and this paragraph are
sunyiming 1:6465a3f5c58a 71 * duplicated in all such forms and that any documentation,
sunyiming 1:6465a3f5c58a 72 * advertising materials, and other materials related to such
sunyiming 1:6465a3f5c58a 73 * distribution and use acknowledge that the software was developed
sunyiming 1:6465a3f5c58a 74 * by Carnegie Mellon University. The name of the
sunyiming 1:6465a3f5c58a 75 * University may not be used to endorse or promote products derived
sunyiming 1:6465a3f5c58a 76 * from this software without specific prior written permission.
sunyiming 1:6465a3f5c58a 77 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 78 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sunyiming 1:6465a3f5c58a 79 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sunyiming 1:6465a3f5c58a 80 */
sunyiming 1:6465a3f5c58a 81
sunyiming 1:6465a3f5c58a 82 #include "lwip/opt.h"
sunyiming 1:6465a3f5c58a 83
sunyiming 1:6465a3f5c58a 84 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
sunyiming 1:6465a3f5c58a 85
sunyiming 1:6465a3f5c58a 86 #include "lwip/ip.h" /* for ip_input() */
sunyiming 1:6465a3f5c58a 87
sunyiming 1:6465a3f5c58a 88 #include "ppp.h"
sunyiming 1:6465a3f5c58a 89 #include "pppdebug.h"
sunyiming 1:6465a3f5c58a 90
sunyiming 1:6465a3f5c58a 91 #include "randm.h"
sunyiming 1:6465a3f5c58a 92 #include "fsm.h"
sunyiming 1:6465a3f5c58a 93 #if PAP_SUPPORT
sunyiming 1:6465a3f5c58a 94 #include "pap.h"
sunyiming 1:6465a3f5c58a 95 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 96 #if CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 97 #include "chap.h"
sunyiming 1:6465a3f5c58a 98 #endif /* CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 99 #include "ipcp.h"
sunyiming 1:6465a3f5c58a 100 #include "lcp.h"
sunyiming 1:6465a3f5c58a 101 #include "magic.h"
sunyiming 1:6465a3f5c58a 102 #include "auth.h"
sunyiming 1:6465a3f5c58a 103 #if VJ_SUPPORT
sunyiming 1:6465a3f5c58a 104 #include "vj.h"
sunyiming 1:6465a3f5c58a 105 #endif /* VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 106 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 107 #include "netif/ppp_oe.h"
sunyiming 1:6465a3f5c58a 108 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 109
sunyiming 1:6465a3f5c58a 110 #include "lwip/tcpip.h"
sunyiming 1:6465a3f5c58a 111 #include "lwip/api.h"
sunyiming 1:6465a3f5c58a 112 #include "lwip/snmp.h"
sunyiming 1:6465a3f5c58a 113
sunyiming 1:6465a3f5c58a 114 #include <string.h>
sunyiming 1:6465a3f5c58a 115
sunyiming 1:6465a3f5c58a 116 /*************************/
sunyiming 1:6465a3f5c58a 117 /*** LOCAL DEFINITIONS ***/
sunyiming 1:6465a3f5c58a 118 /*************************/
sunyiming 1:6465a3f5c58a 119
sunyiming 1:6465a3f5c58a 120 /** PPP_INPROC_MULTITHREADED==1 call pppInput using tcpip_callback().
sunyiming 1:6465a3f5c58a 121 * Set this to 0 if pppInProc is called inside tcpip_thread or with NO_SYS==1.
sunyiming 1:6465a3f5c58a 122 * Default is 1 for NO_SYS==0 (multithreaded) and 0 for NO_SYS==1 (single-threaded).
sunyiming 1:6465a3f5c58a 123 */
sunyiming 1:6465a3f5c58a 124 #ifndef PPP_INPROC_MULTITHREADED
sunyiming 1:6465a3f5c58a 125 #define PPP_INPROC_MULTITHREADED (NO_SYS==0)
sunyiming 1:6465a3f5c58a 126 #endif
sunyiming 1:6465a3f5c58a 127
sunyiming 1:6465a3f5c58a 128 /** PPP_INPROC_OWNTHREAD==1: start a dedicated RX thread per PPP session.
sunyiming 1:6465a3f5c58a 129 * Default is 0: call pppos_input() for received raw characters, charcater
sunyiming 1:6465a3f5c58a 130 * reception is up to the port */
sunyiming 1:6465a3f5c58a 131 #ifndef PPP_INPROC_OWNTHREAD
sunyiming 1:6465a3f5c58a 132 #define PPP_INPROC_OWNTHREAD PPP_INPROC_MULTITHREADED
sunyiming 1:6465a3f5c58a 133 #endif
sunyiming 1:6465a3f5c58a 134
sunyiming 1:6465a3f5c58a 135 #if PPP_INPROC_OWNTHREAD && !PPP_INPROC_MULTITHREADED
sunyiming 1:6465a3f5c58a 136 #error "PPP_INPROC_OWNTHREAD needs PPP_INPROC_MULTITHREADED==1"
sunyiming 1:6465a3f5c58a 137 #endif
sunyiming 1:6465a3f5c58a 138
sunyiming 1:6465a3f5c58a 139 /*
sunyiming 1:6465a3f5c58a 140 * The basic PPP frame.
sunyiming 1:6465a3f5c58a 141 */
sunyiming 1:6465a3f5c58a 142 #define PPP_ADDRESS(p) (((u_char *)(p))[0])
sunyiming 1:6465a3f5c58a 143 #define PPP_CONTROL(p) (((u_char *)(p))[1])
sunyiming 1:6465a3f5c58a 144 #define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
sunyiming 1:6465a3f5c58a 145
sunyiming 1:6465a3f5c58a 146 /* PPP packet parser states. Current state indicates operation yet to be
sunyiming 1:6465a3f5c58a 147 * completed. */
sunyiming 1:6465a3f5c58a 148 typedef enum {
sunyiming 1:6465a3f5c58a 149 PDIDLE = 0, /* Idle state - waiting. */
sunyiming 1:6465a3f5c58a 150 PDSTART, /* Process start flag. */
sunyiming 1:6465a3f5c58a 151 PDADDRESS, /* Process address field. */
sunyiming 1:6465a3f5c58a 152 PDCONTROL, /* Process control field. */
sunyiming 1:6465a3f5c58a 153 PDPROTOCOL1, /* Process protocol field 1. */
sunyiming 1:6465a3f5c58a 154 PDPROTOCOL2, /* Process protocol field 2. */
sunyiming 1:6465a3f5c58a 155 PDDATA /* Process data byte. */
sunyiming 1:6465a3f5c58a 156 } PPPDevStates;
sunyiming 1:6465a3f5c58a 157
sunyiming 1:6465a3f5c58a 158 #define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07])
sunyiming 1:6465a3f5c58a 159
sunyiming 1:6465a3f5c58a 160 /************************/
sunyiming 1:6465a3f5c58a 161 /*** LOCAL DATA TYPES ***/
sunyiming 1:6465a3f5c58a 162 /************************/
sunyiming 1:6465a3f5c58a 163
sunyiming 1:6465a3f5c58a 164 /** RX buffer size: this may be configured smaller! */
sunyiming 1:6465a3f5c58a 165 #ifndef PPPOS_RX_BUFSIZE
sunyiming 1:6465a3f5c58a 166 #define PPPOS_RX_BUFSIZE (PPP_MRU + PPP_HDRLEN)
sunyiming 1:6465a3f5c58a 167 #endif
sunyiming 1:6465a3f5c58a 168
sunyiming 1:6465a3f5c58a 169 typedef struct PPPControlRx_s {
sunyiming 1:6465a3f5c58a 170 /** unit number / ppp descriptor */
sunyiming 1:6465a3f5c58a 171 int pd;
sunyiming 1:6465a3f5c58a 172 /** the rx file descriptor */
sunyiming 1:6465a3f5c58a 173 sio_fd_t fd;
sunyiming 1:6465a3f5c58a 174 /** receive buffer - encoded data is stored here */
sunyiming 1:6465a3f5c58a 175 u_char rxbuf[PPPOS_RX_BUFSIZE];
sunyiming 1:6465a3f5c58a 176
sunyiming 1:6465a3f5c58a 177 /* The input packet. */
sunyiming 1:6465a3f5c58a 178 struct pbuf *inHead, *inTail;
sunyiming 1:6465a3f5c58a 179
sunyiming 1:6465a3f5c58a 180 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 181 u16_t inProtocol; /* The input protocol code. */
sunyiming 1:6465a3f5c58a 182 u16_t inFCS; /* Input Frame Check Sequence value. */
sunyiming 1:6465a3f5c58a 183 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 184 PPPDevStates inState; /* The input process state. */
sunyiming 1:6465a3f5c58a 185 char inEscaped; /* Escape next character. */
sunyiming 1:6465a3f5c58a 186 ext_accm inACCM; /* Async-Ctl-Char-Map for input. */
sunyiming 1:6465a3f5c58a 187 } PPPControlRx;
sunyiming 1:6465a3f5c58a 188
sunyiming 1:6465a3f5c58a 189 /*
sunyiming 1:6465a3f5c58a 190 * PPP interface control block.
sunyiming 1:6465a3f5c58a 191 */
sunyiming 1:6465a3f5c58a 192 typedef struct PPPControl_s {
sunyiming 1:6465a3f5c58a 193 PPPControlRx rx;
sunyiming 1:6465a3f5c58a 194 char openFlag; /* True when in use. */
sunyiming 1:6465a3f5c58a 195 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 196 struct netif *ethif;
sunyiming 1:6465a3f5c58a 197 struct pppoe_softc *pppoe_sc;
sunyiming 1:6465a3f5c58a 198 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 199 int if_up; /* True when the interface is up. */
sunyiming 1:6465a3f5c58a 200 int errCode; /* Code indicating why interface is down. */
sunyiming 1:6465a3f5c58a 201 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 202 sio_fd_t fd; /* File device ID of port. */
sunyiming 1:6465a3f5c58a 203 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 204 u16_t mtu; /* Peer's mru */
sunyiming 1:6465a3f5c58a 205 int pcomp; /* Does peer accept protocol compression? */
sunyiming 1:6465a3f5c58a 206 int accomp; /* Does peer accept addr/ctl compression? */
sunyiming 1:6465a3f5c58a 207 u_long lastXMit; /* Time of last transmission. */
sunyiming 1:6465a3f5c58a 208 ext_accm outACCM; /* Async-Ctl-Char-Map for output. */
sunyiming 1:6465a3f5c58a 209 #if PPPOS_SUPPORT && VJ_SUPPORT
sunyiming 1:6465a3f5c58a 210 int vjEnabled; /* Flag indicating VJ compression enabled. */
sunyiming 1:6465a3f5c58a 211 struct vjcompress vjComp; /* Van Jacobson compression header. */
sunyiming 1:6465a3f5c58a 212 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 213
sunyiming 1:6465a3f5c58a 214 struct netif netif;
sunyiming 1:6465a3f5c58a 215
sunyiming 1:6465a3f5c58a 216 struct ppp_addrs addrs;
sunyiming 1:6465a3f5c58a 217
sunyiming 1:6465a3f5c58a 218 void (*linkStatusCB)(void *ctx, int errCode, void *arg);
sunyiming 1:6465a3f5c58a 219 void *linkStatusCtx;
sunyiming 1:6465a3f5c58a 220
sunyiming 1:6465a3f5c58a 221 } PPPControl;
sunyiming 1:6465a3f5c58a 222
sunyiming 1:6465a3f5c58a 223
sunyiming 1:6465a3f5c58a 224 /*
sunyiming 1:6465a3f5c58a 225 * Ioctl definitions.
sunyiming 1:6465a3f5c58a 226 */
sunyiming 1:6465a3f5c58a 227
sunyiming 1:6465a3f5c58a 228 struct npioctl {
sunyiming 1:6465a3f5c58a 229 int protocol; /* PPP procotol, e.g. PPP_IP */
sunyiming 1:6465a3f5c58a 230 enum NPmode mode;
sunyiming 1:6465a3f5c58a 231 };
sunyiming 1:6465a3f5c58a 232
sunyiming 1:6465a3f5c58a 233
sunyiming 1:6465a3f5c58a 234
sunyiming 1:6465a3f5c58a 235 /***********************************/
sunyiming 1:6465a3f5c58a 236 /*** LOCAL FUNCTION DECLARATIONS ***/
sunyiming 1:6465a3f5c58a 237 /***********************************/
sunyiming 1:6465a3f5c58a 238 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 239 #if PPP_INPROC_OWNTHREAD
sunyiming 1:6465a3f5c58a 240 static void pppInputThread(void *arg);
sunyiming 1:6465a3f5c58a 241 #endif /* PPP_INPROC_OWNTHREAD */
sunyiming 1:6465a3f5c58a 242 static void pppDrop(PPPControlRx *pcrx);
sunyiming 1:6465a3f5c58a 243 static void pppInProc(PPPControlRx *pcrx, u_char *s, int l);
sunyiming 1:6465a3f5c58a 244 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 245
sunyiming 1:6465a3f5c58a 246
sunyiming 1:6465a3f5c58a 247 /******************************/
sunyiming 1:6465a3f5c58a 248 /*** PUBLIC DATA STRUCTURES ***/
sunyiming 1:6465a3f5c58a 249 /******************************/
sunyiming 1:6465a3f5c58a 250 u_long subnetMask;
sunyiming 1:6465a3f5c58a 251
sunyiming 1:6465a3f5c58a 252 static PPPControl pppControl[NUM_PPP] __attribute((section("AHBSRAM1"))); /* The PPP interface control blocks. */
sunyiming 1:6465a3f5c58a 253
sunyiming 1:6465a3f5c58a 254 sys_mbox_t pppMbox; //Used to signal PPP thread that a PPP session begins
sunyiming 1:6465a3f5c58a 255
sunyiming 1:6465a3f5c58a 256 /*
sunyiming 1:6465a3f5c58a 257 * PPP Data Link Layer "protocol" table.
sunyiming 1:6465a3f5c58a 258 * One entry per supported protocol.
sunyiming 1:6465a3f5c58a 259 * The last entry must be NULL.
sunyiming 1:6465a3f5c58a 260 */
sunyiming 1:6465a3f5c58a 261 struct protent *ppp_protocols[] = {
sunyiming 1:6465a3f5c58a 262 &lcp_protent,
sunyiming 1:6465a3f5c58a 263 #if PAP_SUPPORT
sunyiming 1:6465a3f5c58a 264 &pap_protent,
sunyiming 1:6465a3f5c58a 265 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 266 #if CHAP_SUPPORT
sunyiming 1:6465a3f5c58a 267 &chap_protent,
sunyiming 1:6465a3f5c58a 268 #endif /* CHAP_SUPPORT */
sunyiming 1:6465a3f5c58a 269 #if CBCP_SUPPORT
sunyiming 1:6465a3f5c58a 270 &cbcp_protent,
sunyiming 1:6465a3f5c58a 271 #endif /* CBCP_SUPPORT */
sunyiming 1:6465a3f5c58a 272 &ipcp_protent,
sunyiming 1:6465a3f5c58a 273 #if CCP_SUPPORT
sunyiming 1:6465a3f5c58a 274 &ccp_protent,
sunyiming 1:6465a3f5c58a 275 #endif /* CCP_SUPPORT */
sunyiming 1:6465a3f5c58a 276 NULL
sunyiming 1:6465a3f5c58a 277 };
sunyiming 1:6465a3f5c58a 278
sunyiming 1:6465a3f5c58a 279
sunyiming 1:6465a3f5c58a 280 /*
sunyiming 1:6465a3f5c58a 281 * Buffers for outgoing packets. This must be accessed only from the appropriate
sunyiming 1:6465a3f5c58a 282 * PPP task so that it doesn't need to be protected to avoid collisions.
sunyiming 1:6465a3f5c58a 283 */
sunyiming 1:6465a3f5c58a 284 u_char outpacket_buf[NUM_PPP][PPP_MRU+PPP_HDRLEN] __attribute((section("AHBSRAM1")));
sunyiming 1:6465a3f5c58a 285
sunyiming 1:6465a3f5c58a 286
sunyiming 1:6465a3f5c58a 287 /*****************************/
sunyiming 1:6465a3f5c58a 288 /*** LOCAL DATA STRUCTURES ***/
sunyiming 1:6465a3f5c58a 289 /*****************************/
sunyiming 1:6465a3f5c58a 290
sunyiming 1:6465a3f5c58a 291 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 292 /*
sunyiming 1:6465a3f5c58a 293 * FCS lookup table as calculated by genfcstab.
sunyiming 1:6465a3f5c58a 294 * @todo: smaller, slower implementation for lower memory footprint?
sunyiming 1:6465a3f5c58a 295 */
sunyiming 1:6465a3f5c58a 296 static const u_short fcstab[256] = {
sunyiming 1:6465a3f5c58a 297 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
sunyiming 1:6465a3f5c58a 298 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
sunyiming 1:6465a3f5c58a 299 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
sunyiming 1:6465a3f5c58a 300 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
sunyiming 1:6465a3f5c58a 301 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
sunyiming 1:6465a3f5c58a 302 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
sunyiming 1:6465a3f5c58a 303 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
sunyiming 1:6465a3f5c58a 304 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
sunyiming 1:6465a3f5c58a 305 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
sunyiming 1:6465a3f5c58a 306 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
sunyiming 1:6465a3f5c58a 307 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
sunyiming 1:6465a3f5c58a 308 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
sunyiming 1:6465a3f5c58a 309 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
sunyiming 1:6465a3f5c58a 310 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
sunyiming 1:6465a3f5c58a 311 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
sunyiming 1:6465a3f5c58a 312 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
sunyiming 1:6465a3f5c58a 313 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
sunyiming 1:6465a3f5c58a 314 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
sunyiming 1:6465a3f5c58a 315 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
sunyiming 1:6465a3f5c58a 316 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
sunyiming 1:6465a3f5c58a 317 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
sunyiming 1:6465a3f5c58a 318 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
sunyiming 1:6465a3f5c58a 319 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
sunyiming 1:6465a3f5c58a 320 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
sunyiming 1:6465a3f5c58a 321 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
sunyiming 1:6465a3f5c58a 322 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
sunyiming 1:6465a3f5c58a 323 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
sunyiming 1:6465a3f5c58a 324 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
sunyiming 1:6465a3f5c58a 325 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
sunyiming 1:6465a3f5c58a 326 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
sunyiming 1:6465a3f5c58a 327 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
sunyiming 1:6465a3f5c58a 328 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
sunyiming 1:6465a3f5c58a 329 };
sunyiming 1:6465a3f5c58a 330
sunyiming 1:6465a3f5c58a 331 /* PPP's Asynchronous-Control-Character-Map. The mask array is used
sunyiming 1:6465a3f5c58a 332 * to select the specific bit for a character. */
sunyiming 1:6465a3f5c58a 333 static u_char pppACCMMask[] = {
sunyiming 1:6465a3f5c58a 334 0x01,
sunyiming 1:6465a3f5c58a 335 0x02,
sunyiming 1:6465a3f5c58a 336 0x04,
sunyiming 1:6465a3f5c58a 337 0x08,
sunyiming 1:6465a3f5c58a 338 0x10,
sunyiming 1:6465a3f5c58a 339 0x20,
sunyiming 1:6465a3f5c58a 340 0x40,
sunyiming 1:6465a3f5c58a 341 0x80
sunyiming 1:6465a3f5c58a 342 };
sunyiming 1:6465a3f5c58a 343
sunyiming 1:6465a3f5c58a 344 /** Wake up the task blocked in reading from serial line (if any) */
sunyiming 1:6465a3f5c58a 345 static void
sunyiming 1:6465a3f5c58a 346 pppRecvWakeup(int pd)
sunyiming 1:6465a3f5c58a 347 {
sunyiming 1:6465a3f5c58a 348 PPPDEBUG(LOG_DEBUG, ("pppRecvWakeup: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 349 if (pppControl[pd].openFlag != 0) {
sunyiming 1:6465a3f5c58a 350 sio_read_abort(pppControl[pd].fd);
sunyiming 1:6465a3f5c58a 351 }
sunyiming 1:6465a3f5c58a 352 }
sunyiming 1:6465a3f5c58a 353 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 354
sunyiming 1:6465a3f5c58a 355 void
sunyiming 1:6465a3f5c58a 356 pppLinkTerminated(int pd)
sunyiming 1:6465a3f5c58a 357 {
sunyiming 1:6465a3f5c58a 358 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 359
sunyiming 1:6465a3f5c58a 360 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 361 if (pppControl[pd].ethif) {
sunyiming 1:6465a3f5c58a 362 pppoe_disconnect(pppControl[pd].pppoe_sc);
sunyiming 1:6465a3f5c58a 363 } else
sunyiming 1:6465a3f5c58a 364 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 365 {
sunyiming 1:6465a3f5c58a 366 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 367 PPPControl* pc;
sunyiming 1:6465a3f5c58a 368 pppRecvWakeup(pd);
sunyiming 1:6465a3f5c58a 369 pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 370
sunyiming 1:6465a3f5c58a 371 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
sunyiming 1:6465a3f5c58a 372 if (pc->linkStatusCB) {
sunyiming 1:6465a3f5c58a 373 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
sunyiming 1:6465a3f5c58a 374 }
sunyiming 1:6465a3f5c58a 375
sunyiming 1:6465a3f5c58a 376 pc->openFlag = 0;/**/
sunyiming 1:6465a3f5c58a 377 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 378 }
sunyiming 1:6465a3f5c58a 379 PPPDEBUG(LOG_DEBUG, ("pppLinkTerminated: finished.\n"));
sunyiming 1:6465a3f5c58a 380 }
sunyiming 1:6465a3f5c58a 381
sunyiming 1:6465a3f5c58a 382 void
sunyiming 1:6465a3f5c58a 383 pppLinkDown(int pd)
sunyiming 1:6465a3f5c58a 384 {
sunyiming 1:6465a3f5c58a 385 PPPDEBUG(LOG_DEBUG, ("pppLinkDown: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 386
sunyiming 1:6465a3f5c58a 387 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 388 if (pppControl[pd].ethif) {
sunyiming 1:6465a3f5c58a 389 pppoe_disconnect(pppControl[pd].pppoe_sc);
sunyiming 1:6465a3f5c58a 390 } else
sunyiming 1:6465a3f5c58a 391 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 392 {
sunyiming 1:6465a3f5c58a 393 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 394 pppRecvWakeup(pd);
sunyiming 1:6465a3f5c58a 395 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 396 }
sunyiming 1:6465a3f5c58a 397 }
sunyiming 1:6465a3f5c58a 398
sunyiming 1:6465a3f5c58a 399 /** Initiate LCP open request */
sunyiming 1:6465a3f5c58a 400 static void
sunyiming 1:6465a3f5c58a 401 pppStart(int pd)
sunyiming 1:6465a3f5c58a 402 {
sunyiming 1:6465a3f5c58a 403 PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 404 lcp_lowerup(pd);
sunyiming 1:6465a3f5c58a 405 lcp_open(pd); /* Start protocol */
sunyiming 1:6465a3f5c58a 406 PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n"));
sunyiming 1:6465a3f5c58a 407 }
sunyiming 1:6465a3f5c58a 408
sunyiming 1:6465a3f5c58a 409 /** LCP close request */
sunyiming 1:6465a3f5c58a 410 static void
sunyiming 1:6465a3f5c58a 411 pppStop(int pd)
sunyiming 1:6465a3f5c58a 412 {
sunyiming 1:6465a3f5c58a 413 PPPDEBUG(LOG_DEBUG, ("pppStop: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 414 lcp_close(pd, "User request");
sunyiming 1:6465a3f5c58a 415 }
sunyiming 1:6465a3f5c58a 416
sunyiming 1:6465a3f5c58a 417 /** Called when carrier/link is lost */
sunyiming 1:6465a3f5c58a 418 static void
sunyiming 1:6465a3f5c58a 419 pppHup(int pd)
sunyiming 1:6465a3f5c58a 420 {
sunyiming 1:6465a3f5c58a 421 PPPDEBUG(LOG_DEBUG, ("pppHupCB: unit %d\n", pd));
sunyiming 1:6465a3f5c58a 422 lcp_lowerdown(pd);
sunyiming 1:6465a3f5c58a 423 link_terminated(pd);
sunyiming 1:6465a3f5c58a 424 }
sunyiming 1:6465a3f5c58a 425
sunyiming 1:6465a3f5c58a 426 /***********************************/
sunyiming 1:6465a3f5c58a 427 /*** PUBLIC FUNCTION DEFINITIONS ***/
sunyiming 1:6465a3f5c58a 428 /***********************************/
sunyiming 1:6465a3f5c58a 429 /* Initialize the PPP subsystem. */
sunyiming 1:6465a3f5c58a 430
sunyiming 1:6465a3f5c58a 431 struct ppp_settings ppp_settings;
sunyiming 1:6465a3f5c58a 432
sunyiming 1:6465a3f5c58a 433 void
sunyiming 1:6465a3f5c58a 434 pppInit(void)
sunyiming 1:6465a3f5c58a 435 {
sunyiming 1:6465a3f5c58a 436 struct protent *protp;
sunyiming 1:6465a3f5c58a 437 int i, j;
sunyiming 1:6465a3f5c58a 438
sunyiming 1:6465a3f5c58a 439 memset(&ppp_settings, 0, sizeof(ppp_settings));
sunyiming 1:6465a3f5c58a 440 ppp_settings.usepeerdns = 1;
sunyiming 1:6465a3f5c58a 441 pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
sunyiming 1:6465a3f5c58a 442
sunyiming 1:6465a3f5c58a 443 magicInit();
sunyiming 1:6465a3f5c58a 444
sunyiming 1:6465a3f5c58a 445 subnetMask = PP_HTONL(0xffffff00UL);
sunyiming 1:6465a3f5c58a 446
sunyiming 1:6465a3f5c58a 447 for (i = 0; i < NUM_PPP; i++) {
sunyiming 1:6465a3f5c58a 448 /* Initialize each protocol to the standard option set. */
sunyiming 1:6465a3f5c58a 449 for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) {
sunyiming 1:6465a3f5c58a 450 (*protp->init)(i);
sunyiming 1:6465a3f5c58a 451 }
sunyiming 1:6465a3f5c58a 452 }
sunyiming 1:6465a3f5c58a 453
sunyiming 1:6465a3f5c58a 454 sys_mbox_new(&pppMbox, 1);
sunyiming 1:6465a3f5c58a 455 sys_thread_new(PPP_THREAD_NAME, pppInputThread, (void*)NULL, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO); //Create PPP thread here
sunyiming 1:6465a3f5c58a 456 }
sunyiming 1:6465a3f5c58a 457
sunyiming 1:6465a3f5c58a 458 void
sunyiming 1:6465a3f5c58a 459 pppSetAuth(enum pppAuthType authType, const char *user, const char *passwd)
sunyiming 1:6465a3f5c58a 460 {
sunyiming 1:6465a3f5c58a 461 switch(authType) {
sunyiming 1:6465a3f5c58a 462 case PPPAUTHTYPE_NONE:
sunyiming 1:6465a3f5c58a 463 default:
sunyiming 1:6465a3f5c58a 464 #ifdef LWIP_PPP_STRICT_PAP_REJECT
sunyiming 1:6465a3f5c58a 465 ppp_settings.refuse_pap = 1;
sunyiming 1:6465a3f5c58a 466 #else /* LWIP_PPP_STRICT_PAP_REJECT */
sunyiming 1:6465a3f5c58a 467 /* some providers request pap and accept an empty login/pw */
sunyiming 1:6465a3f5c58a 468 ppp_settings.refuse_pap = 0;
sunyiming 1:6465a3f5c58a 469 #endif /* LWIP_PPP_STRICT_PAP_REJECT */
sunyiming 1:6465a3f5c58a 470 ppp_settings.refuse_chap = 1;
sunyiming 1:6465a3f5c58a 471 break;
sunyiming 1:6465a3f5c58a 472
sunyiming 1:6465a3f5c58a 473 case PPPAUTHTYPE_ANY:
sunyiming 1:6465a3f5c58a 474 /* Warning: Using PPPAUTHTYPE_ANY might have security consequences.
sunyiming 1:6465a3f5c58a 475 * RFC 1994 says:
sunyiming 1:6465a3f5c58a 476 *
sunyiming 1:6465a3f5c58a 477 * In practice, within or associated with each PPP server, there is a
sunyiming 1:6465a3f5c58a 478 * database which associates "user" names with authentication
sunyiming 1:6465a3f5c58a 479 * information ("secrets"). It is not anticipated that a particular
sunyiming 1:6465a3f5c58a 480 * named user would be authenticated by multiple methods. This would
sunyiming 1:6465a3f5c58a 481 * make the user vulnerable to attacks which negotiate the least secure
sunyiming 1:6465a3f5c58a 482 * method from among a set (such as PAP rather than CHAP). If the same
sunyiming 1:6465a3f5c58a 483 * secret was used, PAP would reveal the secret to be used later with
sunyiming 1:6465a3f5c58a 484 * CHAP.
sunyiming 1:6465a3f5c58a 485 *
sunyiming 1:6465a3f5c58a 486 * Instead, for each user name there should be an indication of exactly
sunyiming 1:6465a3f5c58a 487 * one method used to authenticate that user name. If a user needs to
sunyiming 1:6465a3f5c58a 488 * make use of different authentication methods under different
sunyiming 1:6465a3f5c58a 489 * circumstances, then distinct user names SHOULD be employed, each of
sunyiming 1:6465a3f5c58a 490 * which identifies exactly one authentication method.
sunyiming 1:6465a3f5c58a 491 *
sunyiming 1:6465a3f5c58a 492 */
sunyiming 1:6465a3f5c58a 493 ppp_settings.refuse_pap = 0;
sunyiming 1:6465a3f5c58a 494 ppp_settings.refuse_chap = 0;
sunyiming 1:6465a3f5c58a 495 break;
sunyiming 1:6465a3f5c58a 496
sunyiming 1:6465a3f5c58a 497 case PPPAUTHTYPE_PAP:
sunyiming 1:6465a3f5c58a 498 ppp_settings.refuse_pap = 0;
sunyiming 1:6465a3f5c58a 499 ppp_settings.refuse_chap = 1;
sunyiming 1:6465a3f5c58a 500 break;
sunyiming 1:6465a3f5c58a 501
sunyiming 1:6465a3f5c58a 502 case PPPAUTHTYPE_CHAP:
sunyiming 1:6465a3f5c58a 503 ppp_settings.refuse_pap = 1;
sunyiming 1:6465a3f5c58a 504 ppp_settings.refuse_chap = 0;
sunyiming 1:6465a3f5c58a 505 break;
sunyiming 1:6465a3f5c58a 506 }
sunyiming 1:6465a3f5c58a 507
sunyiming 1:6465a3f5c58a 508 if(user) {
sunyiming 1:6465a3f5c58a 509 strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1);
sunyiming 1:6465a3f5c58a 510 ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0';
sunyiming 1:6465a3f5c58a 511 } else {
sunyiming 1:6465a3f5c58a 512 ppp_settings.user[0] = '\0';
sunyiming 1:6465a3f5c58a 513 }
sunyiming 1:6465a3f5c58a 514
sunyiming 1:6465a3f5c58a 515 if(passwd) {
sunyiming 1:6465a3f5c58a 516 strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1);
sunyiming 1:6465a3f5c58a 517 ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0';
sunyiming 1:6465a3f5c58a 518 } else {
sunyiming 1:6465a3f5c58a 519 ppp_settings.passwd[0] = '\0';
sunyiming 1:6465a3f5c58a 520 }
sunyiming 1:6465a3f5c58a 521 }
sunyiming 1:6465a3f5c58a 522
sunyiming 1:6465a3f5c58a 523 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 524 /** Open a new PPP connection using the given I/O device.
sunyiming 1:6465a3f5c58a 525 * This initializes the PPP control block but does not
sunyiming 1:6465a3f5c58a 526 * attempt to negotiate the LCP session. If this port
sunyiming 1:6465a3f5c58a 527 * connects to a modem, the modem connection must be
sunyiming 1:6465a3f5c58a 528 * established before calling this.
sunyiming 1:6465a3f5c58a 529 * Return a new PPP connection descriptor on success or
sunyiming 1:6465a3f5c58a 530 * an error code (negative) on failure.
sunyiming 1:6465a3f5c58a 531 *
sunyiming 1:6465a3f5c58a 532 * pppOpen() is directly defined to this function.
sunyiming 1:6465a3f5c58a 533 */
sunyiming 1:6465a3f5c58a 534 int
sunyiming 1:6465a3f5c58a 535 pppOverSerialOpen(sio_fd_t fd, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx)
sunyiming 1:6465a3f5c58a 536 {
sunyiming 1:6465a3f5c58a 537 PPPControl *pc;
sunyiming 1:6465a3f5c58a 538 int pd;
sunyiming 1:6465a3f5c58a 539
sunyiming 1:6465a3f5c58a 540 if (linkStatusCB == NULL) {
sunyiming 1:6465a3f5c58a 541 /* PPP is single-threaded: without a callback,
sunyiming 1:6465a3f5c58a 542 * there is no way to know when the link is up. */
sunyiming 1:6465a3f5c58a 543 return PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 544 }
sunyiming 1:6465a3f5c58a 545
sunyiming 1:6465a3f5c58a 546 /* Find a free PPP session descriptor. */
sunyiming 1:6465a3f5c58a 547 for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
sunyiming 1:6465a3f5c58a 548
sunyiming 1:6465a3f5c58a 549 if (pd >= NUM_PPP) {
sunyiming 1:6465a3f5c58a 550 pd = PPPERR_OPEN;
sunyiming 1:6465a3f5c58a 551 } else {
sunyiming 1:6465a3f5c58a 552 pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 553 /* @todo: is this correct or do I overwrite something? */
sunyiming 1:6465a3f5c58a 554 memset(pc, 0, sizeof(PPPControl));
sunyiming 1:6465a3f5c58a 555 pc->rx.pd = pd;
sunyiming 1:6465a3f5c58a 556 pc->rx.fd = fd;
sunyiming 1:6465a3f5c58a 557
sunyiming 1:6465a3f5c58a 558 pc->openFlag = 1;
sunyiming 1:6465a3f5c58a 559 pc->fd = fd;
sunyiming 1:6465a3f5c58a 560
sunyiming 1:6465a3f5c58a 561 #if VJ_SUPPORT
sunyiming 1:6465a3f5c58a 562 vj_compress_init(&pc->vjComp);
sunyiming 1:6465a3f5c58a 563 #endif /* VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 564
sunyiming 1:6465a3f5c58a 565 /*
sunyiming 1:6465a3f5c58a 566 * Default the in and out accm so that escape and flag characters
sunyiming 1:6465a3f5c58a 567 * are always escaped.
sunyiming 1:6465a3f5c58a 568 */
sunyiming 1:6465a3f5c58a 569 pc->rx.inACCM[15] = 0x60; /* no need to protect since RX is not running */
sunyiming 1:6465a3f5c58a 570 pc->outACCM[15] = 0x60;
sunyiming 1:6465a3f5c58a 571
sunyiming 1:6465a3f5c58a 572 pc->linkStatusCB = linkStatusCB;
sunyiming 1:6465a3f5c58a 573 pc->linkStatusCtx = linkStatusCtx;
sunyiming 1:6465a3f5c58a 574
sunyiming 1:6465a3f5c58a 575 /*
sunyiming 1:6465a3f5c58a 576 * Start the connection and handle incoming events (packet or timeout).
sunyiming 1:6465a3f5c58a 577 */
sunyiming 1:6465a3f5c58a 578 PPPDEBUG(LOG_INFO, ("pppOverSerialOpen: unit %d: Connecting\n", pd));
sunyiming 1:6465a3f5c58a 579 pppStart(pd);
sunyiming 1:6465a3f5c58a 580 #if PPP_INPROC_OWNTHREAD
sunyiming 1:6465a3f5c58a 581 sys_mbox_post(&pppMbox, (void*)&pc->rx);
sunyiming 1:6465a3f5c58a 582 #endif
sunyiming 1:6465a3f5c58a 583 }
sunyiming 1:6465a3f5c58a 584
sunyiming 1:6465a3f5c58a 585 return pd;
sunyiming 1:6465a3f5c58a 586 }
sunyiming 1:6465a3f5c58a 587 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 588
sunyiming 1:6465a3f5c58a 589 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 590 static void pppOverEthernetLinkStatusCB(int pd, int up);
sunyiming 1:6465a3f5c58a 591
sunyiming 1:6465a3f5c58a 592 void
sunyiming 1:6465a3f5c58a 593 pppOverEthernetClose(int pd)
sunyiming 1:6465a3f5c58a 594 {
sunyiming 1:6465a3f5c58a 595 PPPControl* pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 596
sunyiming 1:6465a3f5c58a 597 /* *TJL* There's no lcp_deinit */
sunyiming 1:6465a3f5c58a 598 lcp_close(pd, NULL);
sunyiming 1:6465a3f5c58a 599
sunyiming 1:6465a3f5c58a 600 pppoe_destroy(&pc->netif);
sunyiming 1:6465a3f5c58a 601 }
sunyiming 1:6465a3f5c58a 602
sunyiming 1:6465a3f5c58a 603 int pppOverEthernetOpen(struct netif *ethif, const char *service_name, const char *concentrator_name, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx)
sunyiming 1:6465a3f5c58a 604 {
sunyiming 1:6465a3f5c58a 605 PPPControl *pc;
sunyiming 1:6465a3f5c58a 606 int pd;
sunyiming 1:6465a3f5c58a 607
sunyiming 1:6465a3f5c58a 608 LWIP_UNUSED_ARG(service_name);
sunyiming 1:6465a3f5c58a 609 LWIP_UNUSED_ARG(concentrator_name);
sunyiming 1:6465a3f5c58a 610
sunyiming 1:6465a3f5c58a 611 if (linkStatusCB == NULL) {
sunyiming 1:6465a3f5c58a 612 /* PPP is single-threaded: without a callback,
sunyiming 1:6465a3f5c58a 613 * there is no way to know when the link is up. */
sunyiming 1:6465a3f5c58a 614 return PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 615 }
sunyiming 1:6465a3f5c58a 616
sunyiming 1:6465a3f5c58a 617 /* Find a free PPP session descriptor. Critical region? */
sunyiming 1:6465a3f5c58a 618 for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++);
sunyiming 1:6465a3f5c58a 619 if (pd >= NUM_PPP) {
sunyiming 1:6465a3f5c58a 620 pd = PPPERR_OPEN;
sunyiming 1:6465a3f5c58a 621 } else {
sunyiming 1:6465a3f5c58a 622 pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 623 memset(pc, 0, sizeof(PPPControl));
sunyiming 1:6465a3f5c58a 624 pc->openFlag = 1;
sunyiming 1:6465a3f5c58a 625 pc->ethif = ethif;
sunyiming 1:6465a3f5c58a 626
sunyiming 1:6465a3f5c58a 627 pc->linkStatusCB = linkStatusCB;
sunyiming 1:6465a3f5c58a 628 pc->linkStatusCtx = linkStatusCtx;
sunyiming 1:6465a3f5c58a 629
sunyiming 1:6465a3f5c58a 630 lcp_wantoptions[pd].mru = PPPOE_MAXMTU;
sunyiming 1:6465a3f5c58a 631 lcp_wantoptions[pd].neg_asyncmap = 0;
sunyiming 1:6465a3f5c58a 632 lcp_wantoptions[pd].neg_pcompression = 0;
sunyiming 1:6465a3f5c58a 633 lcp_wantoptions[pd].neg_accompression = 0;
sunyiming 1:6465a3f5c58a 634
sunyiming 1:6465a3f5c58a 635 lcp_allowoptions[pd].mru = PPPOE_MAXMTU;
sunyiming 1:6465a3f5c58a 636 lcp_allowoptions[pd].neg_asyncmap = 0;
sunyiming 1:6465a3f5c58a 637 lcp_allowoptions[pd].neg_pcompression = 0;
sunyiming 1:6465a3f5c58a 638 lcp_allowoptions[pd].neg_accompression = 0;
sunyiming 1:6465a3f5c58a 639
sunyiming 1:6465a3f5c58a 640 if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) {
sunyiming 1:6465a3f5c58a 641 pc->openFlag = 0;
sunyiming 1:6465a3f5c58a 642 return PPPERR_OPEN;
sunyiming 1:6465a3f5c58a 643 }
sunyiming 1:6465a3f5c58a 644
sunyiming 1:6465a3f5c58a 645 pppoe_connect(pc->pppoe_sc);
sunyiming 1:6465a3f5c58a 646 }
sunyiming 1:6465a3f5c58a 647
sunyiming 1:6465a3f5c58a 648 return pd;
sunyiming 1:6465a3f5c58a 649 }
sunyiming 1:6465a3f5c58a 650 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 651
sunyiming 1:6465a3f5c58a 652
sunyiming 1:6465a3f5c58a 653 /* Close a PPP connection and release the descriptor.
sunyiming 1:6465a3f5c58a 654 * Any outstanding packets in the queues are dropped.
sunyiming 1:6465a3f5c58a 655 * Return 0 on success, an error code on failure. */
sunyiming 1:6465a3f5c58a 656 int
sunyiming 1:6465a3f5c58a 657 pppClose(int pd)
sunyiming 1:6465a3f5c58a 658 {
sunyiming 1:6465a3f5c58a 659 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 660 int st = 0;
sunyiming 1:6465a3f5c58a 661
sunyiming 1:6465a3f5c58a 662 PPPDEBUG(LOG_DEBUG, ("pppClose() called\n"));
sunyiming 1:6465a3f5c58a 663
sunyiming 1:6465a3f5c58a 664 /* Disconnect */
sunyiming 1:6465a3f5c58a 665 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 666 if(pc->ethif) {
sunyiming 1:6465a3f5c58a 667 PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
sunyiming 1:6465a3f5c58a 668 pc->errCode = PPPERR_USER;
sunyiming 1:6465a3f5c58a 669 /* This will leave us at PHASE_DEAD. */
sunyiming 1:6465a3f5c58a 670 pppStop(pd);
sunyiming 1:6465a3f5c58a 671 } else
sunyiming 1:6465a3f5c58a 672 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 673 {
sunyiming 1:6465a3f5c58a 674 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 675 PPPDEBUG(LOG_DEBUG, ("pppClose: unit %d kill_link -> pppStop\n", pd));
sunyiming 1:6465a3f5c58a 676 pc->errCode = PPPERR_USER;
sunyiming 1:6465a3f5c58a 677 /* This will leave us at PHASE_DEAD. */
sunyiming 1:6465a3f5c58a 678 pppStop(pd);
sunyiming 1:6465a3f5c58a 679 pppRecvWakeup(pd);
sunyiming 1:6465a3f5c58a 680 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 681 }
sunyiming 1:6465a3f5c58a 682
sunyiming 1:6465a3f5c58a 683 return st;
sunyiming 1:6465a3f5c58a 684 }
sunyiming 1:6465a3f5c58a 685
sunyiming 1:6465a3f5c58a 686 /* This function is called when carrier is lost on the PPP channel. */
sunyiming 1:6465a3f5c58a 687 void
sunyiming 1:6465a3f5c58a 688 pppSigHUP(int pd)
sunyiming 1:6465a3f5c58a 689 {
sunyiming 1:6465a3f5c58a 690 PPPDEBUG(LOG_DEBUG, ("pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd));
sunyiming 1:6465a3f5c58a 691 pppHup(pd);
sunyiming 1:6465a3f5c58a 692 }
sunyiming 1:6465a3f5c58a 693
sunyiming 1:6465a3f5c58a 694 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 695 static void
sunyiming 1:6465a3f5c58a 696 nPut(PPPControl *pc, struct pbuf *nb)
sunyiming 1:6465a3f5c58a 697 {
sunyiming 1:6465a3f5c58a 698 struct pbuf *b;
sunyiming 1:6465a3f5c58a 699 int c;
sunyiming 1:6465a3f5c58a 700
sunyiming 1:6465a3f5c58a 701 for(b = nb; b != NULL; b = b->next) {
sunyiming 1:6465a3f5c58a 702 if((c = sio_write(pc->fd, b->payload, b->len)) != b->len) {
sunyiming 1:6465a3f5c58a 703 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 704 ("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));
sunyiming 1:6465a3f5c58a 705 LINK_STATS_INC(link.err);
sunyiming 1:6465a3f5c58a 706 pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */
sunyiming 1:6465a3f5c58a 707 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 708 pbuf_free(nb);
sunyiming 1:6465a3f5c58a 709 return;
sunyiming 1:6465a3f5c58a 710 }
sunyiming 1:6465a3f5c58a 711 }
sunyiming 1:6465a3f5c58a 712
sunyiming 1:6465a3f5c58a 713 snmp_add_ifoutoctets(&pc->netif, nb->tot_len);
sunyiming 1:6465a3f5c58a 714 snmp_inc_ifoutucastpkts(&pc->netif);
sunyiming 1:6465a3f5c58a 715 pbuf_free(nb);
sunyiming 1:6465a3f5c58a 716 LINK_STATS_INC(link.xmit);
sunyiming 1:6465a3f5c58a 717 }
sunyiming 1:6465a3f5c58a 718
sunyiming 1:6465a3f5c58a 719 /*
sunyiming 1:6465a3f5c58a 720 * pppAppend - append given character to end of given pbuf. If outACCM
sunyiming 1:6465a3f5c58a 721 * is not NULL and the character needs to be escaped, do so.
sunyiming 1:6465a3f5c58a 722 * If pbuf is full, append another.
sunyiming 1:6465a3f5c58a 723 * Return the current pbuf.
sunyiming 1:6465a3f5c58a 724 */
sunyiming 1:6465a3f5c58a 725 static struct pbuf *
sunyiming 1:6465a3f5c58a 726 pppAppend(u_char c, struct pbuf *nb, ext_accm *outACCM)
sunyiming 1:6465a3f5c58a 727 {
sunyiming 1:6465a3f5c58a 728 struct pbuf *tb = nb;
sunyiming 1:6465a3f5c58a 729
sunyiming 1:6465a3f5c58a 730 /* Make sure there is room for the character and an escape code.
sunyiming 1:6465a3f5c58a 731 * Sure we don't quite fill the buffer if the character doesn't
sunyiming 1:6465a3f5c58a 732 * get escaped but is one character worth complicating this? */
sunyiming 1:6465a3f5c58a 733 /* Note: We assume no packet header. */
sunyiming 1:6465a3f5c58a 734 if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) {
sunyiming 1:6465a3f5c58a 735 tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
sunyiming 1:6465a3f5c58a 736 if (tb) {
sunyiming 1:6465a3f5c58a 737 nb->next = tb;
sunyiming 1:6465a3f5c58a 738 } else {
sunyiming 1:6465a3f5c58a 739 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 740 }
sunyiming 1:6465a3f5c58a 741 nb = tb;
sunyiming 1:6465a3f5c58a 742 }
sunyiming 1:6465a3f5c58a 743
sunyiming 1:6465a3f5c58a 744 if (nb) {
sunyiming 1:6465a3f5c58a 745 if (outACCM && ESCAPE_P(*outACCM, c)) {
sunyiming 1:6465a3f5c58a 746 *((u_char*)nb->payload + nb->len++) = PPP_ESCAPE;
sunyiming 1:6465a3f5c58a 747 *((u_char*)nb->payload + nb->len++) = c ^ PPP_TRANS;
sunyiming 1:6465a3f5c58a 748 } else {
sunyiming 1:6465a3f5c58a 749 *((u_char*)nb->payload + nb->len++) = c;
sunyiming 1:6465a3f5c58a 750 }
sunyiming 1:6465a3f5c58a 751 }
sunyiming 1:6465a3f5c58a 752
sunyiming 1:6465a3f5c58a 753 return tb;
sunyiming 1:6465a3f5c58a 754 }
sunyiming 1:6465a3f5c58a 755 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 756
sunyiming 1:6465a3f5c58a 757 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 758 static err_t
sunyiming 1:6465a3f5c58a 759 pppifOutputOverEthernet(int pd, struct pbuf *p)
sunyiming 1:6465a3f5c58a 760 {
sunyiming 1:6465a3f5c58a 761 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 762 struct pbuf *pb;
sunyiming 1:6465a3f5c58a 763 u_short protocol = PPP_IP;
sunyiming 1:6465a3f5c58a 764 int i=0;
sunyiming 1:6465a3f5c58a 765 u16_t tot_len;
sunyiming 1:6465a3f5c58a 766
sunyiming 1:6465a3f5c58a 767 /* @todo: try to use pbuf_header() here! */
sunyiming 1:6465a3f5c58a 768 pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM);
sunyiming 1:6465a3f5c58a 769 if(!pb) {
sunyiming 1:6465a3f5c58a 770 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 771 LINK_STATS_INC(link.proterr);
sunyiming 1:6465a3f5c58a 772 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 773 return ERR_MEM;
sunyiming 1:6465a3f5c58a 774 }
sunyiming 1:6465a3f5c58a 775
sunyiming 1:6465a3f5c58a 776 pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
sunyiming 1:6465a3f5c58a 777
sunyiming 1:6465a3f5c58a 778 pc->lastXMit = sys_jiffies();
sunyiming 1:6465a3f5c58a 779
sunyiming 1:6465a3f5c58a 780 if (!pc->pcomp || protocol > 0xFF) {
sunyiming 1:6465a3f5c58a 781 *((u_char*)pb->payload + i++) = (protocol >> 8) & 0xFF;
sunyiming 1:6465a3f5c58a 782 }
sunyiming 1:6465a3f5c58a 783 *((u_char*)pb->payload + i) = protocol & 0xFF;
sunyiming 1:6465a3f5c58a 784
sunyiming 1:6465a3f5c58a 785 pbuf_chain(pb, p);
sunyiming 1:6465a3f5c58a 786 tot_len = pb->tot_len;
sunyiming 1:6465a3f5c58a 787
sunyiming 1:6465a3f5c58a 788 if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
sunyiming 1:6465a3f5c58a 789 LINK_STATS_INC(link.err);
sunyiming 1:6465a3f5c58a 790 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 791 return PPPERR_DEVICE;
sunyiming 1:6465a3f5c58a 792 }
sunyiming 1:6465a3f5c58a 793
sunyiming 1:6465a3f5c58a 794 snmp_add_ifoutoctets(&pc->netif, tot_len);
sunyiming 1:6465a3f5c58a 795 snmp_inc_ifoutucastpkts(&pc->netif);
sunyiming 1:6465a3f5c58a 796 LINK_STATS_INC(link.xmit);
sunyiming 1:6465a3f5c58a 797 return ERR_OK;
sunyiming 1:6465a3f5c58a 798 }
sunyiming 1:6465a3f5c58a 799 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 800
sunyiming 1:6465a3f5c58a 801 /* Send a packet on the given connection. */
sunyiming 1:6465a3f5c58a 802 static err_t
sunyiming 1:6465a3f5c58a 803 pppifOutput(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr)
sunyiming 1:6465a3f5c58a 804 {
sunyiming 1:6465a3f5c58a 805 int pd = (int)(size_t)netif->state;
sunyiming 1:6465a3f5c58a 806 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 807 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 808 u_short protocol = PPP_IP;
sunyiming 1:6465a3f5c58a 809 u_int fcsOut = PPP_INITFCS;
sunyiming 1:6465a3f5c58a 810 struct pbuf *headMB = NULL, *tailMB = NULL, *p;
sunyiming 1:6465a3f5c58a 811 u_char c;
sunyiming 1:6465a3f5c58a 812 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 813
sunyiming 1:6465a3f5c58a 814 LWIP_UNUSED_ARG(ipaddr);
sunyiming 1:6465a3f5c58a 815
sunyiming 1:6465a3f5c58a 816 /* Validate parameters. */
sunyiming 1:6465a3f5c58a 817 /* We let any protocol value go through - it can't hurt us
sunyiming 1:6465a3f5c58a 818 * and the peer will just drop it if it's not accepting it. */
sunyiming 1:6465a3f5c58a 819 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag || !pb) {
sunyiming 1:6465a3f5c58a 820 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad parms prot=%d pb=%p\n",
sunyiming 1:6465a3f5c58a 821 pd, PPP_IP, pb));
sunyiming 1:6465a3f5c58a 822 LINK_STATS_INC(link.opterr);
sunyiming 1:6465a3f5c58a 823 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 824 snmp_inc_ifoutdiscards(netif);
sunyiming 1:6465a3f5c58a 825 return ERR_ARG;
sunyiming 1:6465a3f5c58a 826 }
sunyiming 1:6465a3f5c58a 827
sunyiming 1:6465a3f5c58a 828 /* Check that the link is up. */
sunyiming 1:6465a3f5c58a 829 if (lcp_phase[pd] == PHASE_DEAD) {
sunyiming 1:6465a3f5c58a 830 PPPDEBUG(LOG_ERR, ("pppifOutput[%d]: link not up\n", pd));
sunyiming 1:6465a3f5c58a 831 LINK_STATS_INC(link.rterr);
sunyiming 1:6465a3f5c58a 832 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 833 snmp_inc_ifoutdiscards(netif);
sunyiming 1:6465a3f5c58a 834 return ERR_RTE;
sunyiming 1:6465a3f5c58a 835 }
sunyiming 1:6465a3f5c58a 836
sunyiming 1:6465a3f5c58a 837 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 838 if(pc->ethif) {
sunyiming 1:6465a3f5c58a 839 return pppifOutputOverEthernet(pd, pb);
sunyiming 1:6465a3f5c58a 840 }
sunyiming 1:6465a3f5c58a 841 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 842
sunyiming 1:6465a3f5c58a 843 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 844 /* Grab an output buffer. */
sunyiming 1:6465a3f5c58a 845 headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
sunyiming 1:6465a3f5c58a 846 if (headMB == NULL) {
sunyiming 1:6465a3f5c58a 847 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: first alloc fail\n", pd));
sunyiming 1:6465a3f5c58a 848 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 849 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 850 snmp_inc_ifoutdiscards(netif);
sunyiming 1:6465a3f5c58a 851 return ERR_MEM;
sunyiming 1:6465a3f5c58a 852 }
sunyiming 1:6465a3f5c58a 853
sunyiming 1:6465a3f5c58a 854 #if VJ_SUPPORT
sunyiming 1:6465a3f5c58a 855 /*
sunyiming 1:6465a3f5c58a 856 * Attempt Van Jacobson header compression if VJ is configured and
sunyiming 1:6465a3f5c58a 857 * this is an IP packet.
sunyiming 1:6465a3f5c58a 858 */
sunyiming 1:6465a3f5c58a 859 if (protocol == PPP_IP && pc->vjEnabled) {
sunyiming 1:6465a3f5c58a 860 switch (vj_compress_tcp(&pc->vjComp, pb)) {
sunyiming 1:6465a3f5c58a 861 case TYPE_IP:
sunyiming 1:6465a3f5c58a 862 /* No change...
sunyiming 1:6465a3f5c58a 863 protocol = PPP_IP_PROTOCOL; */
sunyiming 1:6465a3f5c58a 864 break;
sunyiming 1:6465a3f5c58a 865 case TYPE_COMPRESSED_TCP:
sunyiming 1:6465a3f5c58a 866 protocol = PPP_VJC_COMP;
sunyiming 1:6465a3f5c58a 867 break;
sunyiming 1:6465a3f5c58a 868 case TYPE_UNCOMPRESSED_TCP:
sunyiming 1:6465a3f5c58a 869 protocol = PPP_VJC_UNCOMP;
sunyiming 1:6465a3f5c58a 870 break;
sunyiming 1:6465a3f5c58a 871 default:
sunyiming 1:6465a3f5c58a 872 PPPDEBUG(LOG_WARNING, ("pppifOutput[%d]: bad IP packet\n", pd));
sunyiming 1:6465a3f5c58a 873 LINK_STATS_INC(link.proterr);
sunyiming 1:6465a3f5c58a 874 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 875 snmp_inc_ifoutdiscards(netif);
sunyiming 1:6465a3f5c58a 876 pbuf_free(headMB);
sunyiming 1:6465a3f5c58a 877 return ERR_VAL;
sunyiming 1:6465a3f5c58a 878 }
sunyiming 1:6465a3f5c58a 879 }
sunyiming 1:6465a3f5c58a 880 #endif /* VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 881
sunyiming 1:6465a3f5c58a 882 tailMB = headMB;
sunyiming 1:6465a3f5c58a 883
sunyiming 1:6465a3f5c58a 884 /* Build the PPP header. */
sunyiming 1:6465a3f5c58a 885 if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
sunyiming 1:6465a3f5c58a 886 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
sunyiming 1:6465a3f5c58a 887 }
sunyiming 1:6465a3f5c58a 888
sunyiming 1:6465a3f5c58a 889 pc->lastXMit = sys_jiffies();
sunyiming 1:6465a3f5c58a 890 if (!pc->accomp) {
sunyiming 1:6465a3f5c58a 891 fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS);
sunyiming 1:6465a3f5c58a 892 tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 893 fcsOut = PPP_FCS(fcsOut, PPP_UI);
sunyiming 1:6465a3f5c58a 894 tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 895 }
sunyiming 1:6465a3f5c58a 896 if (!pc->pcomp || protocol > 0xFF) {
sunyiming 1:6465a3f5c58a 897 c = (protocol >> 8) & 0xFF;
sunyiming 1:6465a3f5c58a 898 fcsOut = PPP_FCS(fcsOut, c);
sunyiming 1:6465a3f5c58a 899 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 900 }
sunyiming 1:6465a3f5c58a 901 c = protocol & 0xFF;
sunyiming 1:6465a3f5c58a 902 fcsOut = PPP_FCS(fcsOut, c);
sunyiming 1:6465a3f5c58a 903 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 904
sunyiming 1:6465a3f5c58a 905 /* Load packet. */
sunyiming 1:6465a3f5c58a 906 for(p = pb; p; p = p->next) {
sunyiming 1:6465a3f5c58a 907 int n;
sunyiming 1:6465a3f5c58a 908 u_char *sPtr;
sunyiming 1:6465a3f5c58a 909
sunyiming 1:6465a3f5c58a 910 sPtr = (u_char*)p->payload;
sunyiming 1:6465a3f5c58a 911 n = p->len;
sunyiming 1:6465a3f5c58a 912 while (n-- > 0) {
sunyiming 1:6465a3f5c58a 913 c = *sPtr++;
sunyiming 1:6465a3f5c58a 914
sunyiming 1:6465a3f5c58a 915 /* Update FCS before checking for special characters. */
sunyiming 1:6465a3f5c58a 916 fcsOut = PPP_FCS(fcsOut, c);
sunyiming 1:6465a3f5c58a 917
sunyiming 1:6465a3f5c58a 918 /* Copy to output buffer escaping special characters. */
sunyiming 1:6465a3f5c58a 919 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 920 }
sunyiming 1:6465a3f5c58a 921 }
sunyiming 1:6465a3f5c58a 922
sunyiming 1:6465a3f5c58a 923 /* Add FCS and trailing flag. */
sunyiming 1:6465a3f5c58a 924 c = ~fcsOut & 0xFF;
sunyiming 1:6465a3f5c58a 925 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 926 c = (~fcsOut >> 8) & 0xFF;
sunyiming 1:6465a3f5c58a 927 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 928 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
sunyiming 1:6465a3f5c58a 929
sunyiming 1:6465a3f5c58a 930 /* If we failed to complete the packet, throw it away. */
sunyiming 1:6465a3f5c58a 931 if (!tailMB) {
sunyiming 1:6465a3f5c58a 932 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 933 ("pppifOutput[%d]: Alloc err - dropping proto=%d\n",
sunyiming 1:6465a3f5c58a 934 pd, protocol));
sunyiming 1:6465a3f5c58a 935 pbuf_free(headMB);
sunyiming 1:6465a3f5c58a 936 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 937 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 938 snmp_inc_ifoutdiscards(netif);
sunyiming 1:6465a3f5c58a 939 return ERR_MEM;
sunyiming 1:6465a3f5c58a 940 }
sunyiming 1:6465a3f5c58a 941
sunyiming 1:6465a3f5c58a 942 /* Send it. */
sunyiming 1:6465a3f5c58a 943 PPPDEBUG(LOG_INFO, ("pppifOutput[%d]: proto=0x%"X16_F"\n", pd, protocol));
sunyiming 1:6465a3f5c58a 944
sunyiming 1:6465a3f5c58a 945 nPut(pc, headMB);
sunyiming 1:6465a3f5c58a 946 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 947
sunyiming 1:6465a3f5c58a 948 return ERR_OK;
sunyiming 1:6465a3f5c58a 949 }
sunyiming 1:6465a3f5c58a 950
sunyiming 1:6465a3f5c58a 951 /* Get and set parameters for the given connection.
sunyiming 1:6465a3f5c58a 952 * Return 0 on success, an error code on failure. */
sunyiming 1:6465a3f5c58a 953 int
sunyiming 1:6465a3f5c58a 954 pppIOCtl(int pd, int cmd, void *arg)
sunyiming 1:6465a3f5c58a 955 {
sunyiming 1:6465a3f5c58a 956 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 957 int st = 0;
sunyiming 1:6465a3f5c58a 958
sunyiming 1:6465a3f5c58a 959 if (pd < 0 || pd >= NUM_PPP) {
sunyiming 1:6465a3f5c58a 960 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 961 } else {
sunyiming 1:6465a3f5c58a 962 switch(cmd) {
sunyiming 1:6465a3f5c58a 963 case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
sunyiming 1:6465a3f5c58a 964 if (arg) {
sunyiming 1:6465a3f5c58a 965 *(int *)arg = (int)(pc->if_up);
sunyiming 1:6465a3f5c58a 966 } else {
sunyiming 1:6465a3f5c58a 967 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 968 }
sunyiming 1:6465a3f5c58a 969 break;
sunyiming 1:6465a3f5c58a 970 case PPPCTLS_ERRCODE: /* Set the PPP error code. */
sunyiming 1:6465a3f5c58a 971 if (arg) {
sunyiming 1:6465a3f5c58a 972 pc->errCode = *(int *)arg;
sunyiming 1:6465a3f5c58a 973 } else {
sunyiming 1:6465a3f5c58a 974 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 975 }
sunyiming 1:6465a3f5c58a 976 break;
sunyiming 1:6465a3f5c58a 977 case PPPCTLG_ERRCODE: /* Get the PPP error code. */
sunyiming 1:6465a3f5c58a 978 if (arg) {
sunyiming 1:6465a3f5c58a 979 *(int *)arg = (int)(pc->errCode);
sunyiming 1:6465a3f5c58a 980 } else {
sunyiming 1:6465a3f5c58a 981 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 982 }
sunyiming 1:6465a3f5c58a 983 break;
sunyiming 1:6465a3f5c58a 984 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 985 case PPPCTLG_FD: /* Get the fd associated with the ppp */
sunyiming 1:6465a3f5c58a 986 if (arg) {
sunyiming 1:6465a3f5c58a 987 *(sio_fd_t *)arg = pc->fd;
sunyiming 1:6465a3f5c58a 988 } else {
sunyiming 1:6465a3f5c58a 989 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 990 }
sunyiming 1:6465a3f5c58a 991 break;
sunyiming 1:6465a3f5c58a 992 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 993 default:
sunyiming 1:6465a3f5c58a 994 st = PPPERR_PARAM;
sunyiming 1:6465a3f5c58a 995 break;
sunyiming 1:6465a3f5c58a 996 }
sunyiming 1:6465a3f5c58a 997 }
sunyiming 1:6465a3f5c58a 998
sunyiming 1:6465a3f5c58a 999 return st;
sunyiming 1:6465a3f5c58a 1000 }
sunyiming 1:6465a3f5c58a 1001
sunyiming 1:6465a3f5c58a 1002 /*
sunyiming 1:6465a3f5c58a 1003 * Return the Maximum Transmission Unit for the given PPP connection.
sunyiming 1:6465a3f5c58a 1004 */
sunyiming 1:6465a3f5c58a 1005 u_short
sunyiming 1:6465a3f5c58a 1006 pppMTU(int pd)
sunyiming 1:6465a3f5c58a 1007 {
sunyiming 1:6465a3f5c58a 1008 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1009 u_short st;
sunyiming 1:6465a3f5c58a 1010
sunyiming 1:6465a3f5c58a 1011 /* Validate parameters. */
sunyiming 1:6465a3f5c58a 1012 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1013 st = 0;
sunyiming 1:6465a3f5c58a 1014 } else {
sunyiming 1:6465a3f5c58a 1015 st = pc->mtu;
sunyiming 1:6465a3f5c58a 1016 }
sunyiming 1:6465a3f5c58a 1017
sunyiming 1:6465a3f5c58a 1018 return st;
sunyiming 1:6465a3f5c58a 1019 }
sunyiming 1:6465a3f5c58a 1020
sunyiming 1:6465a3f5c58a 1021 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 1022 int
sunyiming 1:6465a3f5c58a 1023 pppWriteOverEthernet(int pd, const u_char *s, int n)
sunyiming 1:6465a3f5c58a 1024 {
sunyiming 1:6465a3f5c58a 1025 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1026 struct pbuf *pb;
sunyiming 1:6465a3f5c58a 1027
sunyiming 1:6465a3f5c58a 1028 /* skip address & flags */
sunyiming 1:6465a3f5c58a 1029 s += 2;
sunyiming 1:6465a3f5c58a 1030 n -= 2;
sunyiming 1:6465a3f5c58a 1031
sunyiming 1:6465a3f5c58a 1032 LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff);
sunyiming 1:6465a3f5c58a 1033 pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM);
sunyiming 1:6465a3f5c58a 1034 if(!pb) {
sunyiming 1:6465a3f5c58a 1035 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 1036 LINK_STATS_INC(link.proterr);
sunyiming 1:6465a3f5c58a 1037 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 1038 return PPPERR_ALLOC;
sunyiming 1:6465a3f5c58a 1039 }
sunyiming 1:6465a3f5c58a 1040
sunyiming 1:6465a3f5c58a 1041 pbuf_header(pb, -(s16_t)PPPOE_HDRLEN);
sunyiming 1:6465a3f5c58a 1042
sunyiming 1:6465a3f5c58a 1043 pc->lastXMit = sys_jiffies();
sunyiming 1:6465a3f5c58a 1044
sunyiming 1:6465a3f5c58a 1045 MEMCPY(pb->payload, s, n);
sunyiming 1:6465a3f5c58a 1046
sunyiming 1:6465a3f5c58a 1047 if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) {
sunyiming 1:6465a3f5c58a 1048 LINK_STATS_INC(link.err);
sunyiming 1:6465a3f5c58a 1049 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 1050 return PPPERR_DEVICE;
sunyiming 1:6465a3f5c58a 1051 }
sunyiming 1:6465a3f5c58a 1052
sunyiming 1:6465a3f5c58a 1053 snmp_add_ifoutoctets(&pc->netif, (u16_t)n);
sunyiming 1:6465a3f5c58a 1054 snmp_inc_ifoutucastpkts(&pc->netif);
sunyiming 1:6465a3f5c58a 1055 LINK_STATS_INC(link.xmit);
sunyiming 1:6465a3f5c58a 1056 return PPPERR_NONE;
sunyiming 1:6465a3f5c58a 1057 }
sunyiming 1:6465a3f5c58a 1058 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 1059
sunyiming 1:6465a3f5c58a 1060 /*
sunyiming 1:6465a3f5c58a 1061 * Write n characters to a ppp link.
sunyiming 1:6465a3f5c58a 1062 * RETURN: >= 0 Number of characters written
sunyiming 1:6465a3f5c58a 1063 * -1 Failed to write to device
sunyiming 1:6465a3f5c58a 1064 */
sunyiming 1:6465a3f5c58a 1065 int
sunyiming 1:6465a3f5c58a 1066 pppWrite(int pd, const u_char *s, int n)
sunyiming 1:6465a3f5c58a 1067 {
sunyiming 1:6465a3f5c58a 1068 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1069 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 1070 u_char c;
sunyiming 1:6465a3f5c58a 1071 u_int fcsOut;
sunyiming 1:6465a3f5c58a 1072 struct pbuf *headMB, *tailMB;
sunyiming 1:6465a3f5c58a 1073 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 1074
sunyiming 1:6465a3f5c58a 1075 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 1076 if(pc->ethif) {
sunyiming 1:6465a3f5c58a 1077 return pppWriteOverEthernet(pd, s, n);
sunyiming 1:6465a3f5c58a 1078 }
sunyiming 1:6465a3f5c58a 1079 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 1080
sunyiming 1:6465a3f5c58a 1081 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 1082 headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
sunyiming 1:6465a3f5c58a 1083 if (headMB == NULL) {
sunyiming 1:6465a3f5c58a 1084 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 1085 LINK_STATS_INC(link.proterr);
sunyiming 1:6465a3f5c58a 1086 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 1087 return PPPERR_ALLOC;
sunyiming 1:6465a3f5c58a 1088 }
sunyiming 1:6465a3f5c58a 1089
sunyiming 1:6465a3f5c58a 1090 tailMB = headMB;
sunyiming 1:6465a3f5c58a 1091
sunyiming 1:6465a3f5c58a 1092 /* If the link has been idle, we'll send a fresh flag character to
sunyiming 1:6465a3f5c58a 1093 * flush any noise. */
sunyiming 1:6465a3f5c58a 1094 if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) {
sunyiming 1:6465a3f5c58a 1095 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
sunyiming 1:6465a3f5c58a 1096 }
sunyiming 1:6465a3f5c58a 1097 pc->lastXMit = sys_jiffies();
sunyiming 1:6465a3f5c58a 1098
sunyiming 1:6465a3f5c58a 1099 fcsOut = PPP_INITFCS;
sunyiming 1:6465a3f5c58a 1100 /* Load output buffer. */
sunyiming 1:6465a3f5c58a 1101 while (n-- > 0) {
sunyiming 1:6465a3f5c58a 1102 c = *s++;
sunyiming 1:6465a3f5c58a 1103
sunyiming 1:6465a3f5c58a 1104 /* Update FCS before checking for special characters. */
sunyiming 1:6465a3f5c58a 1105 fcsOut = PPP_FCS(fcsOut, c);
sunyiming 1:6465a3f5c58a 1106
sunyiming 1:6465a3f5c58a 1107 /* Copy to output buffer escaping special characters. */
sunyiming 1:6465a3f5c58a 1108 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 1109 }
sunyiming 1:6465a3f5c58a 1110
sunyiming 1:6465a3f5c58a 1111 /* Add FCS and trailing flag. */
sunyiming 1:6465a3f5c58a 1112 c = ~fcsOut & 0xFF;
sunyiming 1:6465a3f5c58a 1113 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 1114 c = (~fcsOut >> 8) & 0xFF;
sunyiming 1:6465a3f5c58a 1115 tailMB = pppAppend(c, tailMB, &pc->outACCM);
sunyiming 1:6465a3f5c58a 1116 tailMB = pppAppend(PPP_FLAG, tailMB, NULL);
sunyiming 1:6465a3f5c58a 1117
sunyiming 1:6465a3f5c58a 1118 /* If we failed to complete the packet, throw it away.
sunyiming 1:6465a3f5c58a 1119 * Otherwise send it. */
sunyiming 1:6465a3f5c58a 1120 if (!tailMB) {
sunyiming 1:6465a3f5c58a 1121 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 1122 ("pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len));
sunyiming 1:6465a3f5c58a 1123 /*"pppWrite[%d]: Alloc err - dropping %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
sunyiming 1:6465a3f5c58a 1124 pbuf_free(headMB);
sunyiming 1:6465a3f5c58a 1125 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 1126 LINK_STATS_INC(link.proterr);
sunyiming 1:6465a3f5c58a 1127 snmp_inc_ifoutdiscards(&pc->netif);
sunyiming 1:6465a3f5c58a 1128 return PPPERR_ALLOC;
sunyiming 1:6465a3f5c58a 1129 }
sunyiming 1:6465a3f5c58a 1130
sunyiming 1:6465a3f5c58a 1131 PPPDEBUG(LOG_INFO, ("pppWrite[%d]: len=%d\n", pd, headMB->len));
sunyiming 1:6465a3f5c58a 1132 /* "pppWrite[%d]: %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */
sunyiming 1:6465a3f5c58a 1133 nPut(pc, headMB);
sunyiming 1:6465a3f5c58a 1134 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 1135
sunyiming 1:6465a3f5c58a 1136 return PPPERR_NONE;
sunyiming 1:6465a3f5c58a 1137 }
sunyiming 1:6465a3f5c58a 1138
sunyiming 1:6465a3f5c58a 1139 /*
sunyiming 1:6465a3f5c58a 1140 * ppp_send_config - configure the transmit characteristics of
sunyiming 1:6465a3f5c58a 1141 * the ppp interface.
sunyiming 1:6465a3f5c58a 1142 */
sunyiming 1:6465a3f5c58a 1143 void
sunyiming 1:6465a3f5c58a 1144 ppp_send_config( int unit, u16_t mtu, u32_t asyncmap, int pcomp, int accomp)
sunyiming 1:6465a3f5c58a 1145 {
sunyiming 1:6465a3f5c58a 1146 PPPControl *pc = &pppControl[unit];
sunyiming 1:6465a3f5c58a 1147 int i;
sunyiming 1:6465a3f5c58a 1148
sunyiming 1:6465a3f5c58a 1149 pc->mtu = mtu;
sunyiming 1:6465a3f5c58a 1150 pc->pcomp = pcomp;
sunyiming 1:6465a3f5c58a 1151 pc->accomp = accomp;
sunyiming 1:6465a3f5c58a 1152
sunyiming 1:6465a3f5c58a 1153 /* Load the ACCM bits for the 32 control codes. */
sunyiming 1:6465a3f5c58a 1154 for (i = 0; i < 32/8; i++) {
sunyiming 1:6465a3f5c58a 1155 pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF);
sunyiming 1:6465a3f5c58a 1156 }
sunyiming 1:6465a3f5c58a 1157 PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]: outACCM=%X %X %X %X\n",
sunyiming 1:6465a3f5c58a 1158 unit,
sunyiming 1:6465a3f5c58a 1159 pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3]));
sunyiming 1:6465a3f5c58a 1160 }
sunyiming 1:6465a3f5c58a 1161
sunyiming 1:6465a3f5c58a 1162
sunyiming 1:6465a3f5c58a 1163 /*
sunyiming 1:6465a3f5c58a 1164 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
sunyiming 1:6465a3f5c58a 1165 */
sunyiming 1:6465a3f5c58a 1166 void
sunyiming 1:6465a3f5c58a 1167 ppp_set_xaccm(int unit, ext_accm *accm)
sunyiming 1:6465a3f5c58a 1168 {
sunyiming 1:6465a3f5c58a 1169 SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm));
sunyiming 1:6465a3f5c58a 1170 PPPDEBUG(LOG_INFO, ("ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n",
sunyiming 1:6465a3f5c58a 1171 unit,
sunyiming 1:6465a3f5c58a 1172 pppControl[unit].outACCM[0],
sunyiming 1:6465a3f5c58a 1173 pppControl[unit].outACCM[1],
sunyiming 1:6465a3f5c58a 1174 pppControl[unit].outACCM[2],
sunyiming 1:6465a3f5c58a 1175 pppControl[unit].outACCM[3]));
sunyiming 1:6465a3f5c58a 1176 }
sunyiming 1:6465a3f5c58a 1177
sunyiming 1:6465a3f5c58a 1178
sunyiming 1:6465a3f5c58a 1179 /*
sunyiming 1:6465a3f5c58a 1180 * ppp_recv_config - configure the receive-side characteristics of
sunyiming 1:6465a3f5c58a 1181 * the ppp interface.
sunyiming 1:6465a3f5c58a 1182 */
sunyiming 1:6465a3f5c58a 1183 void
sunyiming 1:6465a3f5c58a 1184 ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp)
sunyiming 1:6465a3f5c58a 1185 {
sunyiming 1:6465a3f5c58a 1186 PPPControl *pc = &pppControl[unit];
sunyiming 1:6465a3f5c58a 1187 int i;
sunyiming 1:6465a3f5c58a 1188 SYS_ARCH_DECL_PROTECT(lev);
sunyiming 1:6465a3f5c58a 1189
sunyiming 1:6465a3f5c58a 1190 LWIP_UNUSED_ARG(accomp);
sunyiming 1:6465a3f5c58a 1191 LWIP_UNUSED_ARG(pcomp);
sunyiming 1:6465a3f5c58a 1192 LWIP_UNUSED_ARG(mru);
sunyiming 1:6465a3f5c58a 1193
sunyiming 1:6465a3f5c58a 1194 /* Load the ACCM bits for the 32 control codes. */
sunyiming 1:6465a3f5c58a 1195 SYS_ARCH_PROTECT(lev);
sunyiming 1:6465a3f5c58a 1196 for (i = 0; i < 32 / 8; i++) {
sunyiming 1:6465a3f5c58a 1197 /* @todo: does this work? ext_accm has been modified from pppd! */
sunyiming 1:6465a3f5c58a 1198 pc->rx.inACCM[i] = (u_char)(asyncmap >> (i * 8));
sunyiming 1:6465a3f5c58a 1199 }
sunyiming 1:6465a3f5c58a 1200 SYS_ARCH_UNPROTECT(lev);
sunyiming 1:6465a3f5c58a 1201 PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n",
sunyiming 1:6465a3f5c58a 1202 unit,
sunyiming 1:6465a3f5c58a 1203 pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3]));
sunyiming 1:6465a3f5c58a 1204 }
sunyiming 1:6465a3f5c58a 1205
sunyiming 1:6465a3f5c58a 1206 #if 0
sunyiming 1:6465a3f5c58a 1207 /*
sunyiming 1:6465a3f5c58a 1208 * ccp_test - ask kernel whether a given compression method
sunyiming 1:6465a3f5c58a 1209 * is acceptable for use. Returns 1 if the method and parameters
sunyiming 1:6465a3f5c58a 1210 * are OK, 0 if the method is known but the parameters are not OK
sunyiming 1:6465a3f5c58a 1211 * (e.g. code size should be reduced), or -1 if the method is unknown.
sunyiming 1:6465a3f5c58a 1212 */
sunyiming 1:6465a3f5c58a 1213 int
sunyiming 1:6465a3f5c58a 1214 ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr)
sunyiming 1:6465a3f5c58a 1215 {
sunyiming 1:6465a3f5c58a 1216 return 0; /* XXX Currently no compression. */
sunyiming 1:6465a3f5c58a 1217 }
sunyiming 1:6465a3f5c58a 1218
sunyiming 1:6465a3f5c58a 1219 /*
sunyiming 1:6465a3f5c58a 1220 * ccp_flags_set - inform kernel about the current state of CCP.
sunyiming 1:6465a3f5c58a 1221 */
sunyiming 1:6465a3f5c58a 1222 void
sunyiming 1:6465a3f5c58a 1223 ccp_flags_set(int unit, int isopen, int isup)
sunyiming 1:6465a3f5c58a 1224 {
sunyiming 1:6465a3f5c58a 1225 /* XXX */
sunyiming 1:6465a3f5c58a 1226 }
sunyiming 1:6465a3f5c58a 1227
sunyiming 1:6465a3f5c58a 1228 /*
sunyiming 1:6465a3f5c58a 1229 * ccp_fatal_error - returns 1 if decompression was disabled as a
sunyiming 1:6465a3f5c58a 1230 * result of an error detected after decompression of a packet,
sunyiming 1:6465a3f5c58a 1231 * 0 otherwise. This is necessary because of patent nonsense.
sunyiming 1:6465a3f5c58a 1232 */
sunyiming 1:6465a3f5c58a 1233 int
sunyiming 1:6465a3f5c58a 1234 ccp_fatal_error(int unit)
sunyiming 1:6465a3f5c58a 1235 {
sunyiming 1:6465a3f5c58a 1236 /* XXX */
sunyiming 1:6465a3f5c58a 1237 return 0;
sunyiming 1:6465a3f5c58a 1238 }
sunyiming 1:6465a3f5c58a 1239 #endif
sunyiming 1:6465a3f5c58a 1240
sunyiming 1:6465a3f5c58a 1241 /*
sunyiming 1:6465a3f5c58a 1242 * get_idle_time - return how long the link has been idle.
sunyiming 1:6465a3f5c58a 1243 */
sunyiming 1:6465a3f5c58a 1244 int
sunyiming 1:6465a3f5c58a 1245 get_idle_time(int u, struct ppp_idle *ip)
sunyiming 1:6465a3f5c58a 1246 {
sunyiming 1:6465a3f5c58a 1247 /* XXX */
sunyiming 1:6465a3f5c58a 1248 LWIP_UNUSED_ARG(u);
sunyiming 1:6465a3f5c58a 1249 LWIP_UNUSED_ARG(ip);
sunyiming 1:6465a3f5c58a 1250
sunyiming 1:6465a3f5c58a 1251 return 0;
sunyiming 1:6465a3f5c58a 1252 }
sunyiming 1:6465a3f5c58a 1253
sunyiming 1:6465a3f5c58a 1254
sunyiming 1:6465a3f5c58a 1255 /*
sunyiming 1:6465a3f5c58a 1256 * Return user specified netmask, modified by any mask we might determine
sunyiming 1:6465a3f5c58a 1257 * for address `addr' (in network byte order).
sunyiming 1:6465a3f5c58a 1258 * Here we scan through the system's list of interfaces, looking for
sunyiming 1:6465a3f5c58a 1259 * any non-point-to-point interfaces which might appear to be on the same
sunyiming 1:6465a3f5c58a 1260 * network as `addr'. If we find any, we OR in their netmask to the
sunyiming 1:6465a3f5c58a 1261 * user-specified netmask.
sunyiming 1:6465a3f5c58a 1262 */
sunyiming 1:6465a3f5c58a 1263 u32_t
sunyiming 1:6465a3f5c58a 1264 GetMask(u32_t addr)
sunyiming 1:6465a3f5c58a 1265 {
sunyiming 1:6465a3f5c58a 1266 u32_t mask, nmask;
sunyiming 1:6465a3f5c58a 1267
sunyiming 1:6465a3f5c58a 1268 htonl(addr);
sunyiming 1:6465a3f5c58a 1269 if (IP_CLASSA(addr)) { /* determine network mask for address class */
sunyiming 1:6465a3f5c58a 1270 nmask = IP_CLASSA_NET;
sunyiming 1:6465a3f5c58a 1271 } else if (IP_CLASSB(addr)) {
sunyiming 1:6465a3f5c58a 1272 nmask = IP_CLASSB_NET;
sunyiming 1:6465a3f5c58a 1273 } else {
sunyiming 1:6465a3f5c58a 1274 nmask = IP_CLASSC_NET;
sunyiming 1:6465a3f5c58a 1275 }
sunyiming 1:6465a3f5c58a 1276
sunyiming 1:6465a3f5c58a 1277 /* class D nets are disallowed by bad_ip_adrs */
sunyiming 1:6465a3f5c58a 1278 mask = subnetMask | htonl(nmask);
sunyiming 1:6465a3f5c58a 1279
sunyiming 1:6465a3f5c58a 1280 /* XXX
sunyiming 1:6465a3f5c58a 1281 * Scan through the system's network interfaces.
sunyiming 1:6465a3f5c58a 1282 * Get each netmask and OR them into our mask.
sunyiming 1:6465a3f5c58a 1283 */
sunyiming 1:6465a3f5c58a 1284
sunyiming 1:6465a3f5c58a 1285 return mask;
sunyiming 1:6465a3f5c58a 1286 }
sunyiming 1:6465a3f5c58a 1287
sunyiming 1:6465a3f5c58a 1288 /*
sunyiming 1:6465a3f5c58a 1289 * sifvjcomp - config tcp header compression
sunyiming 1:6465a3f5c58a 1290 */
sunyiming 1:6465a3f5c58a 1291 int
sunyiming 1:6465a3f5c58a 1292 sifvjcomp(int pd, int vjcomp, u8_t cidcomp, u8_t maxcid)
sunyiming 1:6465a3f5c58a 1293 {
sunyiming 1:6465a3f5c58a 1294 #if PPPOS_SUPPORT && VJ_SUPPORT
sunyiming 1:6465a3f5c58a 1295 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1296
sunyiming 1:6465a3f5c58a 1297 pc->vjEnabled = vjcomp;
sunyiming 1:6465a3f5c58a 1298 pc->vjComp.compressSlot = cidcomp;
sunyiming 1:6465a3f5c58a 1299 pc->vjComp.maxSlotIndex = maxcid;
sunyiming 1:6465a3f5c58a 1300 PPPDEBUG(LOG_INFO, ("sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n",
sunyiming 1:6465a3f5c58a 1301 vjcomp, cidcomp, maxcid));
sunyiming 1:6465a3f5c58a 1302 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1303 LWIP_UNUSED_ARG(pd);
sunyiming 1:6465a3f5c58a 1304 LWIP_UNUSED_ARG(vjcomp);
sunyiming 1:6465a3f5c58a 1305 LWIP_UNUSED_ARG(cidcomp);
sunyiming 1:6465a3f5c58a 1306 LWIP_UNUSED_ARG(maxcid);
sunyiming 1:6465a3f5c58a 1307 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1308
sunyiming 1:6465a3f5c58a 1309 return 0;
sunyiming 1:6465a3f5c58a 1310 }
sunyiming 1:6465a3f5c58a 1311
sunyiming 1:6465a3f5c58a 1312 /*
sunyiming 1:6465a3f5c58a 1313 * pppifNetifInit - netif init callback
sunyiming 1:6465a3f5c58a 1314 */
sunyiming 1:6465a3f5c58a 1315 static err_t
sunyiming 1:6465a3f5c58a 1316 pppifNetifInit(struct netif *netif)
sunyiming 1:6465a3f5c58a 1317 {
sunyiming 1:6465a3f5c58a 1318 netif->name[0] = 'p';
sunyiming 1:6465a3f5c58a 1319 netif->name[1] = 'p';
sunyiming 1:6465a3f5c58a 1320 netif->output = pppifOutput;
sunyiming 1:6465a3f5c58a 1321 netif->mtu = pppMTU((int)(size_t)netif->state);
sunyiming 1:6465a3f5c58a 1322 netif->flags = NETIF_FLAG_POINTTOPOINT | NETIF_FLAG_LINK_UP;
sunyiming 1:6465a3f5c58a 1323 #if LWIP_NETIF_HOSTNAME
sunyiming 1:6465a3f5c58a 1324 /* @todo: Initialize interface hostname */
sunyiming 1:6465a3f5c58a 1325 /* netif_set_hostname(netif, "lwip"); */
sunyiming 1:6465a3f5c58a 1326 #endif /* LWIP_NETIF_HOSTNAME */
sunyiming 1:6465a3f5c58a 1327 return ERR_OK;
sunyiming 1:6465a3f5c58a 1328 }
sunyiming 1:6465a3f5c58a 1329
sunyiming 1:6465a3f5c58a 1330
sunyiming 1:6465a3f5c58a 1331 /*
sunyiming 1:6465a3f5c58a 1332 * sifup - Config the interface up and enable IP packets to pass.
sunyiming 1:6465a3f5c58a 1333 */
sunyiming 1:6465a3f5c58a 1334 int
sunyiming 1:6465a3f5c58a 1335 sifup(int pd)
sunyiming 1:6465a3f5c58a 1336 {
sunyiming 1:6465a3f5c58a 1337 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1338 int st = 1;
sunyiming 1:6465a3f5c58a 1339
sunyiming 1:6465a3f5c58a 1340 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1341 st = 0;
sunyiming 1:6465a3f5c58a 1342 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1343 } else {
sunyiming 1:6465a3f5c58a 1344 netif_remove(&pc->netif);
sunyiming 1:6465a3f5c58a 1345 if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask,
sunyiming 1:6465a3f5c58a 1346 &pc->addrs.his_ipaddr, (void *)(size_t)pd, pppifNetifInit, ip_input)) {
sunyiming 1:6465a3f5c58a 1347 netif_set_up(&pc->netif);
sunyiming 1:6465a3f5c58a 1348 pc->if_up = 1;
sunyiming 1:6465a3f5c58a 1349 pc->errCode = PPPERR_NONE;
sunyiming 1:6465a3f5c58a 1350
sunyiming 1:6465a3f5c58a 1351 PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
sunyiming 1:6465a3f5c58a 1352 if (pc->linkStatusCB) {
sunyiming 1:6465a3f5c58a 1353 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs);
sunyiming 1:6465a3f5c58a 1354 }
sunyiming 1:6465a3f5c58a 1355 } else {
sunyiming 1:6465a3f5c58a 1356 st = 0;
sunyiming 1:6465a3f5c58a 1357 PPPDEBUG(LOG_ERR, ("sifup[%d]: netif_add failed\n", pd));
sunyiming 1:6465a3f5c58a 1358 }
sunyiming 1:6465a3f5c58a 1359 }
sunyiming 1:6465a3f5c58a 1360
sunyiming 1:6465a3f5c58a 1361 return st;
sunyiming 1:6465a3f5c58a 1362 }
sunyiming 1:6465a3f5c58a 1363
sunyiming 1:6465a3f5c58a 1364 /*
sunyiming 1:6465a3f5c58a 1365 * sifnpmode - Set the mode for handling packets for a given NP.
sunyiming 1:6465a3f5c58a 1366 */
sunyiming 1:6465a3f5c58a 1367 int
sunyiming 1:6465a3f5c58a 1368 sifnpmode(int u, int proto, enum NPmode mode)
sunyiming 1:6465a3f5c58a 1369 {
sunyiming 1:6465a3f5c58a 1370 LWIP_UNUSED_ARG(u);
sunyiming 1:6465a3f5c58a 1371 LWIP_UNUSED_ARG(proto);
sunyiming 1:6465a3f5c58a 1372 LWIP_UNUSED_ARG(mode);
sunyiming 1:6465a3f5c58a 1373 return 0;
sunyiming 1:6465a3f5c58a 1374 }
sunyiming 1:6465a3f5c58a 1375
sunyiming 1:6465a3f5c58a 1376 /*
sunyiming 1:6465a3f5c58a 1377 * sifdown - Config the interface down and disable IP.
sunyiming 1:6465a3f5c58a 1378 */
sunyiming 1:6465a3f5c58a 1379 int
sunyiming 1:6465a3f5c58a 1380 sifdown(int pd)
sunyiming 1:6465a3f5c58a 1381 {
sunyiming 1:6465a3f5c58a 1382 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1383 int st = 1;
sunyiming 1:6465a3f5c58a 1384
sunyiming 1:6465a3f5c58a 1385 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1386 st = 0;
sunyiming 1:6465a3f5c58a 1387 PPPDEBUG(LOG_WARNING, ("sifdown[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1388 } else {
sunyiming 1:6465a3f5c58a 1389 pc->if_up = 0;
sunyiming 1:6465a3f5c58a 1390 /* make sure the netif status callback is called */
sunyiming 1:6465a3f5c58a 1391 netif_set_down(&pc->netif);
sunyiming 1:6465a3f5c58a 1392 netif_remove(&pc->netif);
sunyiming 1:6465a3f5c58a 1393 PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: linkStatusCB=%p errCode=%d\n", pd, pc->linkStatusCB, pc->errCode));
sunyiming 1:6465a3f5c58a 1394 if (pc->linkStatusCB) {
sunyiming 1:6465a3f5c58a 1395 pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL);
sunyiming 1:6465a3f5c58a 1396 }
sunyiming 1:6465a3f5c58a 1397 }
sunyiming 1:6465a3f5c58a 1398 return st;
sunyiming 1:6465a3f5c58a 1399 }
sunyiming 1:6465a3f5c58a 1400
sunyiming 1:6465a3f5c58a 1401 /**
sunyiming 1:6465a3f5c58a 1402 * sifaddr - Config the interface IP addresses and netmask.
sunyiming 1:6465a3f5c58a 1403 * @param pd Interface unit ???
sunyiming 1:6465a3f5c58a 1404 * @param o Our IP address ???
sunyiming 1:6465a3f5c58a 1405 * @param h His IP address ???
sunyiming 1:6465a3f5c58a 1406 * @param m IP subnet mask ???
sunyiming 1:6465a3f5c58a 1407 * @param ns1 Primary DNS
sunyiming 1:6465a3f5c58a 1408 * @param ns2 Secondary DNS
sunyiming 1:6465a3f5c58a 1409 */
sunyiming 1:6465a3f5c58a 1410 int
sunyiming 1:6465a3f5c58a 1411 sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2)
sunyiming 1:6465a3f5c58a 1412 {
sunyiming 1:6465a3f5c58a 1413 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1414 int st = 1;
sunyiming 1:6465a3f5c58a 1415
sunyiming 1:6465a3f5c58a 1416 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1417 st = 0;
sunyiming 1:6465a3f5c58a 1418 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1419 } else {
sunyiming 1:6465a3f5c58a 1420 SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o));
sunyiming 1:6465a3f5c58a 1421 SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h));
sunyiming 1:6465a3f5c58a 1422 SMEMCPY(&pc->addrs.netmask, &m, sizeof(m));
sunyiming 1:6465a3f5c58a 1423 SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1));
sunyiming 1:6465a3f5c58a 1424 SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2));
sunyiming 1:6465a3f5c58a 1425 }
sunyiming 1:6465a3f5c58a 1426 return st;
sunyiming 1:6465a3f5c58a 1427 }
sunyiming 1:6465a3f5c58a 1428
sunyiming 1:6465a3f5c58a 1429 /**
sunyiming 1:6465a3f5c58a 1430 * cifaddr - Clear the interface IP addresses, and delete routes
sunyiming 1:6465a3f5c58a 1431 * through the interface if possible.
sunyiming 1:6465a3f5c58a 1432 * @param pd Interface unit ???
sunyiming 1:6465a3f5c58a 1433 * @param o Our IP address ???
sunyiming 1:6465a3f5c58a 1434 * @param h IP broadcast address ???
sunyiming 1:6465a3f5c58a 1435 */
sunyiming 1:6465a3f5c58a 1436 int
sunyiming 1:6465a3f5c58a 1437 cifaddr( int pd, u32_t o, u32_t h)
sunyiming 1:6465a3f5c58a 1438 {
sunyiming 1:6465a3f5c58a 1439 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1440 int st = 1;
sunyiming 1:6465a3f5c58a 1441
sunyiming 1:6465a3f5c58a 1442 LWIP_UNUSED_ARG(o);
sunyiming 1:6465a3f5c58a 1443 LWIP_UNUSED_ARG(h);
sunyiming 1:6465a3f5c58a 1444 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1445 st = 0;
sunyiming 1:6465a3f5c58a 1446 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1447 } else {
sunyiming 1:6465a3f5c58a 1448 IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0);
sunyiming 1:6465a3f5c58a 1449 IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0);
sunyiming 1:6465a3f5c58a 1450 IP4_ADDR(&pc->addrs.netmask, 255,255,255,0);
sunyiming 1:6465a3f5c58a 1451 IP4_ADDR(&pc->addrs.dns1, 0,0,0,0);
sunyiming 1:6465a3f5c58a 1452 IP4_ADDR(&pc->addrs.dns2, 0,0,0,0);
sunyiming 1:6465a3f5c58a 1453 }
sunyiming 1:6465a3f5c58a 1454 return st;
sunyiming 1:6465a3f5c58a 1455 }
sunyiming 1:6465a3f5c58a 1456
sunyiming 1:6465a3f5c58a 1457 /*
sunyiming 1:6465a3f5c58a 1458 * sifdefaultroute - assign a default route through the address given.
sunyiming 1:6465a3f5c58a 1459 */
sunyiming 1:6465a3f5c58a 1460 int
sunyiming 1:6465a3f5c58a 1461 sifdefaultroute(int pd, u32_t l, u32_t g)
sunyiming 1:6465a3f5c58a 1462 {
sunyiming 1:6465a3f5c58a 1463 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1464 int st = 1;
sunyiming 1:6465a3f5c58a 1465
sunyiming 1:6465a3f5c58a 1466 LWIP_UNUSED_ARG(l);
sunyiming 1:6465a3f5c58a 1467 LWIP_UNUSED_ARG(g);
sunyiming 1:6465a3f5c58a 1468
sunyiming 1:6465a3f5c58a 1469 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1470 st = 0;
sunyiming 1:6465a3f5c58a 1471 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1472 } else {
sunyiming 1:6465a3f5c58a 1473 netif_set_default(&pc->netif);
sunyiming 1:6465a3f5c58a 1474 }
sunyiming 1:6465a3f5c58a 1475
sunyiming 1:6465a3f5c58a 1476 /* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */
sunyiming 1:6465a3f5c58a 1477
sunyiming 1:6465a3f5c58a 1478 return st;
sunyiming 1:6465a3f5c58a 1479 }
sunyiming 1:6465a3f5c58a 1480
sunyiming 1:6465a3f5c58a 1481 /*
sunyiming 1:6465a3f5c58a 1482 * cifdefaultroute - delete a default route through the address given.
sunyiming 1:6465a3f5c58a 1483 */
sunyiming 1:6465a3f5c58a 1484 int
sunyiming 1:6465a3f5c58a 1485 cifdefaultroute(int pd, u32_t l, u32_t g)
sunyiming 1:6465a3f5c58a 1486 {
sunyiming 1:6465a3f5c58a 1487 PPPControl *pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1488 int st = 1;
sunyiming 1:6465a3f5c58a 1489
sunyiming 1:6465a3f5c58a 1490 LWIP_UNUSED_ARG(l);
sunyiming 1:6465a3f5c58a 1491 LWIP_UNUSED_ARG(g);
sunyiming 1:6465a3f5c58a 1492
sunyiming 1:6465a3f5c58a 1493 if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) {
sunyiming 1:6465a3f5c58a 1494 st = 0;
sunyiming 1:6465a3f5c58a 1495 PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", pd));
sunyiming 1:6465a3f5c58a 1496 } else {
sunyiming 1:6465a3f5c58a 1497 netif_set_default(NULL);
sunyiming 1:6465a3f5c58a 1498 }
sunyiming 1:6465a3f5c58a 1499
sunyiming 1:6465a3f5c58a 1500 return st;
sunyiming 1:6465a3f5c58a 1501 }
sunyiming 1:6465a3f5c58a 1502
sunyiming 1:6465a3f5c58a 1503 /**********************************/
sunyiming 1:6465a3f5c58a 1504 /*** LOCAL FUNCTION DEFINITIONS ***/
sunyiming 1:6465a3f5c58a 1505 /**********************************/
sunyiming 1:6465a3f5c58a 1506
sunyiming 1:6465a3f5c58a 1507 #if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
sunyiming 1:6465a3f5c58a 1508 /* The main PPP process function. This implements the state machine according
sunyiming 1:6465a3f5c58a 1509 * to section 4 of RFC 1661: The Point-To-Point Protocol. */
sunyiming 1:6465a3f5c58a 1510 static void
sunyiming 1:6465a3f5c58a 1511 pppInputThread(void *arg)
sunyiming 1:6465a3f5c58a 1512 {
sunyiming 1:6465a3f5c58a 1513 int count;
sunyiming 1:6465a3f5c58a 1514 PPPControlRx *pcrx = arg;
sunyiming 1:6465a3f5c58a 1515
sunyiming 1:6465a3f5c58a 1516 do
sunyiming 1:6465a3f5c58a 1517 {
sunyiming 1:6465a3f5c58a 1518 sys_arch_mbox_fetch(&pppMbox, (void**)&pcrx, 0); //Wait indefinitely
sunyiming 1:6465a3f5c58a 1519
sunyiming 1:6465a3f5c58a 1520 while (lcp_phase[pcrx->pd] != PHASE_DEAD) {
sunyiming 1:6465a3f5c58a 1521 count = sio_read(pcrx->fd, pcrx->rxbuf, PPPOS_RX_BUFSIZE);
sunyiming 1:6465a3f5c58a 1522 if(count > 0) {
sunyiming 1:6465a3f5c58a 1523 pppInProc(pcrx, pcrx->rxbuf, count);
sunyiming 1:6465a3f5c58a 1524 } else {
sunyiming 1:6465a3f5c58a 1525 /* nothing received, give other tasks a chance to run */
sunyiming 1:6465a3f5c58a 1526 sys_msleep(1);
sunyiming 1:6465a3f5c58a 1527 }
sunyiming 1:6465a3f5c58a 1528 }
sunyiming 1:6465a3f5c58a 1529 } while(1); //Never terminates
sunyiming 1:6465a3f5c58a 1530 }
sunyiming 1:6465a3f5c58a 1531 #endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
sunyiming 1:6465a3f5c58a 1532
sunyiming 1:6465a3f5c58a 1533 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 1534
sunyiming 1:6465a3f5c58a 1535 void
sunyiming 1:6465a3f5c58a 1536 pppOverEthernetInitFailed(int pd)
sunyiming 1:6465a3f5c58a 1537 {
sunyiming 1:6465a3f5c58a 1538 PPPControl* pc;
sunyiming 1:6465a3f5c58a 1539
sunyiming 1:6465a3f5c58a 1540 pppHup(pd);
sunyiming 1:6465a3f5c58a 1541 pppStop(pd);
sunyiming 1:6465a3f5c58a 1542
sunyiming 1:6465a3f5c58a 1543 pc = &pppControl[pd];
sunyiming 1:6465a3f5c58a 1544 pppoe_destroy(&pc->netif);
sunyiming 1:6465a3f5c58a 1545 pc->openFlag = 0;
sunyiming 1:6465a3f5c58a 1546
sunyiming 1:6465a3f5c58a 1547 if(pc->linkStatusCB) {
sunyiming 1:6465a3f5c58a 1548 pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL);
sunyiming 1:6465a3f5c58a 1549 }
sunyiming 1:6465a3f5c58a 1550 }
sunyiming 1:6465a3f5c58a 1551
sunyiming 1:6465a3f5c58a 1552 static void
sunyiming 1:6465a3f5c58a 1553 pppOverEthernetLinkStatusCB(int pd, int up)
sunyiming 1:6465a3f5c58a 1554 {
sunyiming 1:6465a3f5c58a 1555 if(up) {
sunyiming 1:6465a3f5c58a 1556 PPPDEBUG(LOG_INFO, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd));
sunyiming 1:6465a3f5c58a 1557 pppStart(pd);
sunyiming 1:6465a3f5c58a 1558 } else {
sunyiming 1:6465a3f5c58a 1559 pppOverEthernetInitFailed(pd);
sunyiming 1:6465a3f5c58a 1560 }
sunyiming 1:6465a3f5c58a 1561 }
sunyiming 1:6465a3f5c58a 1562 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 1563
sunyiming 1:6465a3f5c58a 1564 struct pbuf *
sunyiming 1:6465a3f5c58a 1565 pppSingleBuf(struct pbuf *p)
sunyiming 1:6465a3f5c58a 1566 {
sunyiming 1:6465a3f5c58a 1567 struct pbuf *q, *b;
sunyiming 1:6465a3f5c58a 1568 u_char *pl;
sunyiming 1:6465a3f5c58a 1569
sunyiming 1:6465a3f5c58a 1570 if(p->tot_len == p->len) {
sunyiming 1:6465a3f5c58a 1571 return p;
sunyiming 1:6465a3f5c58a 1572 }
sunyiming 1:6465a3f5c58a 1573
sunyiming 1:6465a3f5c58a 1574 q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
sunyiming 1:6465a3f5c58a 1575 if(!q) {
sunyiming 1:6465a3f5c58a 1576 PPPDEBUG(LOG_ERR,
sunyiming 1:6465a3f5c58a 1577 ("pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len));
sunyiming 1:6465a3f5c58a 1578 return p; /* live dangerously */
sunyiming 1:6465a3f5c58a 1579 }
sunyiming 1:6465a3f5c58a 1580
sunyiming 1:6465a3f5c58a 1581 for(b = p, pl = q->payload; b != NULL; b = b->next) {
sunyiming 1:6465a3f5c58a 1582 MEMCPY(pl, b->payload, b->len);
sunyiming 1:6465a3f5c58a 1583 pl += b->len;
sunyiming 1:6465a3f5c58a 1584 }
sunyiming 1:6465a3f5c58a 1585
sunyiming 1:6465a3f5c58a 1586 pbuf_free(p);
sunyiming 1:6465a3f5c58a 1587
sunyiming 1:6465a3f5c58a 1588 return q;
sunyiming 1:6465a3f5c58a 1589 }
sunyiming 1:6465a3f5c58a 1590
sunyiming 1:6465a3f5c58a 1591 struct pppInputHeader {
sunyiming 1:6465a3f5c58a 1592 int unit;
sunyiming 1:6465a3f5c58a 1593 u16_t proto;
sunyiming 1:6465a3f5c58a 1594 };
sunyiming 1:6465a3f5c58a 1595
sunyiming 1:6465a3f5c58a 1596 /*
sunyiming 1:6465a3f5c58a 1597 * Pass the processed input packet to the appropriate handler.
sunyiming 1:6465a3f5c58a 1598 * This function and all handlers run in the context of the tcpip_thread
sunyiming 1:6465a3f5c58a 1599 */
sunyiming 1:6465a3f5c58a 1600 static void
sunyiming 1:6465a3f5c58a 1601 pppInput(void *arg)
sunyiming 1:6465a3f5c58a 1602 {
sunyiming 1:6465a3f5c58a 1603 struct pbuf *nb = (struct pbuf *)arg;
sunyiming 1:6465a3f5c58a 1604 u16_t protocol;
sunyiming 1:6465a3f5c58a 1605 int pd;
sunyiming 1:6465a3f5c58a 1606
sunyiming 1:6465a3f5c58a 1607 pd = ((struct pppInputHeader *)nb->payload)->unit;
sunyiming 1:6465a3f5c58a 1608 protocol = ((struct pppInputHeader *)nb->payload)->proto;
sunyiming 1:6465a3f5c58a 1609
sunyiming 1:6465a3f5c58a 1610 if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) {
sunyiming 1:6465a3f5c58a 1611 LWIP_ASSERT("pbuf_header failed\n", 0);
sunyiming 1:6465a3f5c58a 1612 goto drop;
sunyiming 1:6465a3f5c58a 1613 }
sunyiming 1:6465a3f5c58a 1614
sunyiming 1:6465a3f5c58a 1615 LINK_STATS_INC(link.recv);
sunyiming 1:6465a3f5c58a 1616 snmp_inc_ifinucastpkts(&pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1617 snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len);
sunyiming 1:6465a3f5c58a 1618
sunyiming 1:6465a3f5c58a 1619 /*
sunyiming 1:6465a3f5c58a 1620 * Toss all non-LCP packets unless LCP is OPEN.
sunyiming 1:6465a3f5c58a 1621 * Until we get past the authentication phase, toss all packets
sunyiming 1:6465a3f5c58a 1622 * except LCP, LQR and authentication packets.
sunyiming 1:6465a3f5c58a 1623 */
sunyiming 1:6465a3f5c58a 1624 if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) {
sunyiming 1:6465a3f5c58a 1625 if(!((protocol == PPP_LQR) || (protocol == PPP_PAP) || (protocol == PPP_CHAP)) ||
sunyiming 1:6465a3f5c58a 1626 (lcp_phase[pd] != PHASE_AUTHENTICATE)) {
sunyiming 1:6465a3f5c58a 1627 PPPDEBUG(LOG_INFO, ("pppInput: discarding proto 0x%"X16_F" in phase %d\n", protocol, lcp_phase[pd]));
sunyiming 1:6465a3f5c58a 1628 goto drop;
sunyiming 1:6465a3f5c58a 1629 }
sunyiming 1:6465a3f5c58a 1630 }
sunyiming 1:6465a3f5c58a 1631
sunyiming 1:6465a3f5c58a 1632 switch(protocol) {
sunyiming 1:6465a3f5c58a 1633 case PPP_VJC_COMP: /* VJ compressed TCP */
sunyiming 1:6465a3f5c58a 1634 #if PPPOS_SUPPORT && VJ_SUPPORT
sunyiming 1:6465a3f5c58a 1635 PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len));
sunyiming 1:6465a3f5c58a 1636 /*
sunyiming 1:6465a3f5c58a 1637 * Clip off the VJ header and prepend the rebuilt TCP/IP header and
sunyiming 1:6465a3f5c58a 1638 * pass the result to IP.
sunyiming 1:6465a3f5c58a 1639 */
sunyiming 1:6465a3f5c58a 1640 if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) {
sunyiming 1:6465a3f5c58a 1641 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1642 return;
sunyiming 1:6465a3f5c58a 1643 }
sunyiming 1:6465a3f5c58a 1644 /* Something's wrong so drop it. */
sunyiming 1:6465a3f5c58a 1645 PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ compressed\n", pd));
sunyiming 1:6465a3f5c58a 1646 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1647 /* No handler for this protocol so drop the packet. */
sunyiming 1:6465a3f5c58a 1648 PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload));
sunyiming 1:6465a3f5c58a 1649 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1650 break;
sunyiming 1:6465a3f5c58a 1651
sunyiming 1:6465a3f5c58a 1652 case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
sunyiming 1:6465a3f5c58a 1653 #if PPPOS_SUPPORT && VJ_SUPPORT
sunyiming 1:6465a3f5c58a 1654 PPPDEBUG(LOG_INFO, ("pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len));
sunyiming 1:6465a3f5c58a 1655 /*
sunyiming 1:6465a3f5c58a 1656 * Process the TCP/IP header for VJ header compression and then pass
sunyiming 1:6465a3f5c58a 1657 * the packet to IP.
sunyiming 1:6465a3f5c58a 1658 */
sunyiming 1:6465a3f5c58a 1659 if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) {
sunyiming 1:6465a3f5c58a 1660 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1661 return;
sunyiming 1:6465a3f5c58a 1662 }
sunyiming 1:6465a3f5c58a 1663 /* Something's wrong so drop it. */
sunyiming 1:6465a3f5c58a 1664 PPPDEBUG(LOG_WARNING, ("pppInput[%d]: Dropping VJ uncompressed\n", pd));
sunyiming 1:6465a3f5c58a 1665 #else /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1666 /* No handler for this protocol so drop the packet. */
sunyiming 1:6465a3f5c58a 1667 PPPDEBUG(LOG_INFO,
sunyiming 1:6465a3f5c58a 1668 ("pppInput[%d]: drop VJ UnComp in %d:.*H\n",
sunyiming 1:6465a3f5c58a 1669 pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload));
sunyiming 1:6465a3f5c58a 1670 #endif /* PPPOS_SUPPORT && VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1671 break;
sunyiming 1:6465a3f5c58a 1672
sunyiming 1:6465a3f5c58a 1673 case PPP_IP: /* Internet Protocol */
sunyiming 1:6465a3f5c58a 1674 PPPDEBUG(LOG_INFO, ("pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len));
sunyiming 1:6465a3f5c58a 1675 if (pppControl[pd].netif.input) {
sunyiming 1:6465a3f5c58a 1676 pppControl[pd].netif.input(nb, &pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1677 return;
sunyiming 1:6465a3f5c58a 1678 }
sunyiming 1:6465a3f5c58a 1679 break;
sunyiming 1:6465a3f5c58a 1680
sunyiming 1:6465a3f5c58a 1681 default: {
sunyiming 1:6465a3f5c58a 1682 struct protent *protp;
sunyiming 1:6465a3f5c58a 1683 int i;
sunyiming 1:6465a3f5c58a 1684
sunyiming 1:6465a3f5c58a 1685 /*
sunyiming 1:6465a3f5c58a 1686 * Upcall the proper protocol input routine.
sunyiming 1:6465a3f5c58a 1687 */
sunyiming 1:6465a3f5c58a 1688 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
sunyiming 1:6465a3f5c58a 1689 if (protp->protocol == protocol && protp->enabled_flag) {
sunyiming 1:6465a3f5c58a 1690 PPPDEBUG(LOG_INFO, ("pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len));
sunyiming 1:6465a3f5c58a 1691 nb = pppSingleBuf(nb);
sunyiming 1:6465a3f5c58a 1692 (*protp->input)(pd, nb->payload, nb->len);
sunyiming 1:6465a3f5c58a 1693 PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd));
sunyiming 1:6465a3f5c58a 1694 goto out;
sunyiming 1:6465a3f5c58a 1695 }
sunyiming 1:6465a3f5c58a 1696 }
sunyiming 1:6465a3f5c58a 1697
sunyiming 1:6465a3f5c58a 1698 /* No handler for this protocol so reject the packet. */
sunyiming 1:6465a3f5c58a 1699 PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" len=%d\n", pd, protocol, nb->len));
sunyiming 1:6465a3f5c58a 1700 if (pbuf_header(nb, sizeof(protocol))) {
sunyiming 1:6465a3f5c58a 1701 LWIP_ASSERT("pbuf_header failed\n", 0);
sunyiming 1:6465a3f5c58a 1702 goto drop;
sunyiming 1:6465a3f5c58a 1703 }
sunyiming 1:6465a3f5c58a 1704 #if BYTE_ORDER == LITTLE_ENDIAN
sunyiming 1:6465a3f5c58a 1705 protocol = htons(protocol);
sunyiming 1:6465a3f5c58a 1706 #endif /* BYTE_ORDER == LITTLE_ENDIAN */
sunyiming 1:6465a3f5c58a 1707 SMEMCPY(nb->payload, &protocol, sizeof(protocol));
sunyiming 1:6465a3f5c58a 1708 lcp_sprotrej(pd, nb->payload, nb->len);
sunyiming 1:6465a3f5c58a 1709 }
sunyiming 1:6465a3f5c58a 1710 break;
sunyiming 1:6465a3f5c58a 1711 }
sunyiming 1:6465a3f5c58a 1712
sunyiming 1:6465a3f5c58a 1713 drop:
sunyiming 1:6465a3f5c58a 1714 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 1715 snmp_inc_ifindiscards(&pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1716
sunyiming 1:6465a3f5c58a 1717 out:
sunyiming 1:6465a3f5c58a 1718 pbuf_free(nb);
sunyiming 1:6465a3f5c58a 1719 return;
sunyiming 1:6465a3f5c58a 1720 }
sunyiming 1:6465a3f5c58a 1721
sunyiming 1:6465a3f5c58a 1722 #if PPPOS_SUPPORT
sunyiming 1:6465a3f5c58a 1723 /*
sunyiming 1:6465a3f5c58a 1724 * Drop the input packet.
sunyiming 1:6465a3f5c58a 1725 */
sunyiming 1:6465a3f5c58a 1726 static void
sunyiming 1:6465a3f5c58a 1727 pppDrop(PPPControlRx *pcrx)
sunyiming 1:6465a3f5c58a 1728 {
sunyiming 1:6465a3f5c58a 1729 if (pcrx->inHead != NULL) {
sunyiming 1:6465a3f5c58a 1730 #if 0
sunyiming 1:6465a3f5c58a 1731 PPPDEBUG(LOG_INFO, ("pppDrop: %d:%.*H\n", pcrx->inHead->len, min(60, pcrx->inHead->len * 2), pcrx->inHead->payload));
sunyiming 1:6465a3f5c58a 1732 #endif
sunyiming 1:6465a3f5c58a 1733 PPPDEBUG(LOG_INFO, ("pppDrop: pbuf len=%d, addr %p\n", pcrx->inHead->len, (void*)pcrx->inHead));
sunyiming 1:6465a3f5c58a 1734 if (pcrx->inTail && (pcrx->inTail != pcrx->inHead)) {
sunyiming 1:6465a3f5c58a 1735 pbuf_free(pcrx->inTail);
sunyiming 1:6465a3f5c58a 1736 }
sunyiming 1:6465a3f5c58a 1737 pbuf_free(pcrx->inHead);
sunyiming 1:6465a3f5c58a 1738 pcrx->inHead = NULL;
sunyiming 1:6465a3f5c58a 1739 pcrx->inTail = NULL;
sunyiming 1:6465a3f5c58a 1740 }
sunyiming 1:6465a3f5c58a 1741 #if VJ_SUPPORT
sunyiming 1:6465a3f5c58a 1742 vj_uncompress_err(&pppControl[pcrx->pd].vjComp);
sunyiming 1:6465a3f5c58a 1743 #endif /* VJ_SUPPORT */
sunyiming 1:6465a3f5c58a 1744
sunyiming 1:6465a3f5c58a 1745 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 1746 snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
sunyiming 1:6465a3f5c58a 1747 }
sunyiming 1:6465a3f5c58a 1748
sunyiming 1:6465a3f5c58a 1749 /** Pass received raw characters to PPPoS to be decoded. This function is
sunyiming 1:6465a3f5c58a 1750 * thread-safe and can be called from a dedicated RX-thread or from a main-loop.
sunyiming 1:6465a3f5c58a 1751 *
sunyiming 1:6465a3f5c58a 1752 * @param pd PPP descriptor index, returned by pppOpen()
sunyiming 1:6465a3f5c58a 1753 * @param data received data
sunyiming 1:6465a3f5c58a 1754 * @param len length of received data
sunyiming 1:6465a3f5c58a 1755 */
sunyiming 1:6465a3f5c58a 1756 void
sunyiming 1:6465a3f5c58a 1757 pppos_input(int pd, u_char* data, int len)
sunyiming 1:6465a3f5c58a 1758 {
sunyiming 1:6465a3f5c58a 1759 pppInProc(&pppControl[pd].rx, data, len);
sunyiming 1:6465a3f5c58a 1760 }
sunyiming 1:6465a3f5c58a 1761
sunyiming 1:6465a3f5c58a 1762 /**
sunyiming 1:6465a3f5c58a 1763 * Process a received octet string.
sunyiming 1:6465a3f5c58a 1764 */
sunyiming 1:6465a3f5c58a 1765 static void
sunyiming 1:6465a3f5c58a 1766 pppInProc(PPPControlRx *pcrx, u_char *s, int l)
sunyiming 1:6465a3f5c58a 1767 {
sunyiming 1:6465a3f5c58a 1768 struct pbuf *nextNBuf;
sunyiming 1:6465a3f5c58a 1769 u_char curChar;
sunyiming 1:6465a3f5c58a 1770 u_char escaped;
sunyiming 1:6465a3f5c58a 1771 SYS_ARCH_DECL_PROTECT(lev);
sunyiming 1:6465a3f5c58a 1772
sunyiming 1:6465a3f5c58a 1773 PPPDEBUG(LOG_DEBUG, ("pppInProc[%d]: got %d bytes\n", pcrx->pd, l));
sunyiming 1:6465a3f5c58a 1774 while (l-- > 0) {
sunyiming 1:6465a3f5c58a 1775 curChar = *s++;
sunyiming 1:6465a3f5c58a 1776
sunyiming 1:6465a3f5c58a 1777 SYS_ARCH_PROTECT(lev);
sunyiming 1:6465a3f5c58a 1778 escaped = ESCAPE_P(pcrx->inACCM, curChar);
sunyiming 1:6465a3f5c58a 1779 SYS_ARCH_UNPROTECT(lev);
sunyiming 1:6465a3f5c58a 1780 /* Handle special characters. */
sunyiming 1:6465a3f5c58a 1781 if (escaped) {
sunyiming 1:6465a3f5c58a 1782 /* Check for escape sequences. */
sunyiming 1:6465a3f5c58a 1783 /* XXX Note that this does not handle an escaped 0x5d character which
sunyiming 1:6465a3f5c58a 1784 * would appear as an escape character. Since this is an ASCII ']'
sunyiming 1:6465a3f5c58a 1785 * and there is no reason that I know of to escape it, I won't complicate
sunyiming 1:6465a3f5c58a 1786 * the code to handle this case. GLL */
sunyiming 1:6465a3f5c58a 1787 if (curChar == PPP_ESCAPE) {
sunyiming 1:6465a3f5c58a 1788 pcrx->inEscaped = 1;
sunyiming 1:6465a3f5c58a 1789 /* Check for the flag character. */
sunyiming 1:6465a3f5c58a 1790 } else if (curChar == PPP_FLAG) {
sunyiming 1:6465a3f5c58a 1791 /* If this is just an extra flag character, ignore it. */
sunyiming 1:6465a3f5c58a 1792 if (pcrx->inState <= PDADDRESS) {
sunyiming 1:6465a3f5c58a 1793 /* ignore it */;
sunyiming 1:6465a3f5c58a 1794 /* If we haven't received the packet header, drop what has come in. */
sunyiming 1:6465a3f5c58a 1795 } else if (pcrx->inState < PDDATA) {
sunyiming 1:6465a3f5c58a 1796 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 1797 ("pppInProc[%d]: Dropping incomplete packet %d\n",
sunyiming 1:6465a3f5c58a 1798 pcrx->pd, pcrx->inState));
sunyiming 1:6465a3f5c58a 1799 LINK_STATS_INC(link.lenerr);
sunyiming 1:6465a3f5c58a 1800 pppDrop(pcrx);
sunyiming 1:6465a3f5c58a 1801 /* If the fcs is invalid, drop the packet. */
sunyiming 1:6465a3f5c58a 1802 } else if (pcrx->inFCS != PPP_GOODFCS) {
sunyiming 1:6465a3f5c58a 1803 PPPDEBUG(LOG_INFO,
sunyiming 1:6465a3f5c58a 1804 ("pppInProc[%d]: Dropping bad fcs 0x%"X16_F" proto=0x%"X16_F"\n",
sunyiming 1:6465a3f5c58a 1805 pcrx->pd, pcrx->inFCS, pcrx->inProtocol));
sunyiming 1:6465a3f5c58a 1806 /* Note: If you get lots of these, check for UART frame errors or try different baud rate */
sunyiming 1:6465a3f5c58a 1807 LINK_STATS_INC(link.chkerr);
sunyiming 1:6465a3f5c58a 1808 pppDrop(pcrx);
sunyiming 1:6465a3f5c58a 1809 /* Otherwise it's a good packet so pass it on. */
sunyiming 1:6465a3f5c58a 1810 } else {
sunyiming 1:6465a3f5c58a 1811 struct pbuf *inp;
sunyiming 1:6465a3f5c58a 1812 /* Trim off the checksum. */
sunyiming 1:6465a3f5c58a 1813 if(pcrx->inTail->len >= 2) {
sunyiming 1:6465a3f5c58a 1814 pcrx->inTail->len -= 2;
sunyiming 1:6465a3f5c58a 1815
sunyiming 1:6465a3f5c58a 1816 pcrx->inTail->tot_len = pcrx->inTail->len;
sunyiming 1:6465a3f5c58a 1817 if (pcrx->inTail != pcrx->inHead) {
sunyiming 1:6465a3f5c58a 1818 pbuf_cat(pcrx->inHead, pcrx->inTail);
sunyiming 1:6465a3f5c58a 1819 }
sunyiming 1:6465a3f5c58a 1820 } else {
sunyiming 1:6465a3f5c58a 1821 pcrx->inTail->tot_len = pcrx->inTail->len;
sunyiming 1:6465a3f5c58a 1822 if (pcrx->inTail != pcrx->inHead) {
sunyiming 1:6465a3f5c58a 1823 pbuf_cat(pcrx->inHead, pcrx->inTail);
sunyiming 1:6465a3f5c58a 1824 }
sunyiming 1:6465a3f5c58a 1825
sunyiming 1:6465a3f5c58a 1826 pbuf_realloc(pcrx->inHead, pcrx->inHead->tot_len - 2);
sunyiming 1:6465a3f5c58a 1827 }
sunyiming 1:6465a3f5c58a 1828
sunyiming 1:6465a3f5c58a 1829 /* Dispatch the packet thereby consuming it. */
sunyiming 1:6465a3f5c58a 1830 inp = pcrx->inHead;
sunyiming 1:6465a3f5c58a 1831 /* Packet consumed, release our references. */
sunyiming 1:6465a3f5c58a 1832 pcrx->inHead = NULL;
sunyiming 1:6465a3f5c58a 1833 pcrx->inTail = NULL;
sunyiming 1:6465a3f5c58a 1834 #if PPP_INPROC_MULTITHREADED
sunyiming 1:6465a3f5c58a 1835 if(tcpip_callback_with_block(pppInput, inp, 0) != ERR_OK) {
sunyiming 1:6465a3f5c58a 1836 PPPDEBUG(LOG_ERR, ("pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pcrx->pd));
sunyiming 1:6465a3f5c58a 1837 pbuf_free(inp);
sunyiming 1:6465a3f5c58a 1838 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 1839 snmp_inc_ifindiscards(&pppControl[pcrx->pd].netif);
sunyiming 1:6465a3f5c58a 1840 }
sunyiming 1:6465a3f5c58a 1841 #else /* PPP_INPROC_MULTITHREADED */
sunyiming 1:6465a3f5c58a 1842 pppInput(inp);
sunyiming 1:6465a3f5c58a 1843 #endif /* PPP_INPROC_MULTITHREADED */
sunyiming 1:6465a3f5c58a 1844 }
sunyiming 1:6465a3f5c58a 1845
sunyiming 1:6465a3f5c58a 1846 /* Prepare for a new packet. */
sunyiming 1:6465a3f5c58a 1847 pcrx->inFCS = PPP_INITFCS;
sunyiming 1:6465a3f5c58a 1848 pcrx->inState = PDADDRESS;
sunyiming 1:6465a3f5c58a 1849 pcrx->inEscaped = 0;
sunyiming 1:6465a3f5c58a 1850 /* Other characters are usually control characters that may have
sunyiming 1:6465a3f5c58a 1851 * been inserted by the physical layer so here we just drop them. */
sunyiming 1:6465a3f5c58a 1852 } else {
sunyiming 1:6465a3f5c58a 1853 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 1854 ("pppInProc[%d]: Dropping ACCM char <%d>\n", pcrx->pd, curChar));
sunyiming 1:6465a3f5c58a 1855 }
sunyiming 1:6465a3f5c58a 1856 /* Process other characters. */
sunyiming 1:6465a3f5c58a 1857 } else {
sunyiming 1:6465a3f5c58a 1858 /* Unencode escaped characters. */
sunyiming 1:6465a3f5c58a 1859 if (pcrx->inEscaped) {
sunyiming 1:6465a3f5c58a 1860 pcrx->inEscaped = 0;
sunyiming 1:6465a3f5c58a 1861 curChar ^= PPP_TRANS;
sunyiming 1:6465a3f5c58a 1862 }
sunyiming 1:6465a3f5c58a 1863
sunyiming 1:6465a3f5c58a 1864 /* Process character relative to current state. */
sunyiming 1:6465a3f5c58a 1865 switch(pcrx->inState) {
sunyiming 1:6465a3f5c58a 1866 case PDIDLE: /* Idle state - waiting. */
sunyiming 1:6465a3f5c58a 1867 /* Drop the character if it's not 0xff
sunyiming 1:6465a3f5c58a 1868 * we would have processed a flag character above. */
sunyiming 1:6465a3f5c58a 1869 if (curChar != PPP_ALLSTATIONS) {
sunyiming 1:6465a3f5c58a 1870 break;
sunyiming 1:6465a3f5c58a 1871 }
sunyiming 1:6465a3f5c58a 1872
sunyiming 1:6465a3f5c58a 1873 /* Fall through */
sunyiming 1:6465a3f5c58a 1874 case PDSTART: /* Process start flag. */
sunyiming 1:6465a3f5c58a 1875 /* Prepare for a new packet. */
sunyiming 1:6465a3f5c58a 1876 pcrx->inFCS = PPP_INITFCS;
sunyiming 1:6465a3f5c58a 1877
sunyiming 1:6465a3f5c58a 1878 /* Fall through */
sunyiming 1:6465a3f5c58a 1879 case PDADDRESS: /* Process address field. */
sunyiming 1:6465a3f5c58a 1880 if (curChar == PPP_ALLSTATIONS) {
sunyiming 1:6465a3f5c58a 1881 pcrx->inState = PDCONTROL;
sunyiming 1:6465a3f5c58a 1882 break;
sunyiming 1:6465a3f5c58a 1883 }
sunyiming 1:6465a3f5c58a 1884 /* Else assume compressed address and control fields so
sunyiming 1:6465a3f5c58a 1885 * fall through to get the protocol... */
sunyiming 1:6465a3f5c58a 1886 case PDCONTROL: /* Process control field. */
sunyiming 1:6465a3f5c58a 1887 /* If we don't get a valid control code, restart. */
sunyiming 1:6465a3f5c58a 1888 if (curChar == PPP_UI) {
sunyiming 1:6465a3f5c58a 1889 pcrx->inState = PDPROTOCOL1;
sunyiming 1:6465a3f5c58a 1890 break;
sunyiming 1:6465a3f5c58a 1891 }
sunyiming 1:6465a3f5c58a 1892 #if 0
sunyiming 1:6465a3f5c58a 1893 else {
sunyiming 1:6465a3f5c58a 1894 PPPDEBUG(LOG_WARNING,
sunyiming 1:6465a3f5c58a 1895 ("pppInProc[%d]: Invalid control <%d>\n", pcrx->pd, curChar));
sunyiming 1:6465a3f5c58a 1896 pcrx->inState = PDSTART;
sunyiming 1:6465a3f5c58a 1897 }
sunyiming 1:6465a3f5c58a 1898 #endif
sunyiming 1:6465a3f5c58a 1899 case PDPROTOCOL1: /* Process protocol field 1. */
sunyiming 1:6465a3f5c58a 1900 /* If the lower bit is set, this is the end of the protocol
sunyiming 1:6465a3f5c58a 1901 * field. */
sunyiming 1:6465a3f5c58a 1902 if (curChar & 1) {
sunyiming 1:6465a3f5c58a 1903 pcrx->inProtocol = curChar;
sunyiming 1:6465a3f5c58a 1904 pcrx->inState = PDDATA;
sunyiming 1:6465a3f5c58a 1905 } else {
sunyiming 1:6465a3f5c58a 1906 pcrx->inProtocol = (u_int)curChar << 8;
sunyiming 1:6465a3f5c58a 1907 pcrx->inState = PDPROTOCOL2;
sunyiming 1:6465a3f5c58a 1908 }
sunyiming 1:6465a3f5c58a 1909 break;
sunyiming 1:6465a3f5c58a 1910 case PDPROTOCOL2: /* Process protocol field 2. */
sunyiming 1:6465a3f5c58a 1911 pcrx->inProtocol |= curChar;
sunyiming 1:6465a3f5c58a 1912 pcrx->inState = PDDATA;
sunyiming 1:6465a3f5c58a 1913 break;
sunyiming 1:6465a3f5c58a 1914 case PDDATA: /* Process data byte. */
sunyiming 1:6465a3f5c58a 1915 /* Make space to receive processed data. */
sunyiming 1:6465a3f5c58a 1916 if (pcrx->inTail == NULL || pcrx->inTail->len == PBUF_POOL_BUFSIZE) {
sunyiming 1:6465a3f5c58a 1917 if (pcrx->inTail != NULL) {
sunyiming 1:6465a3f5c58a 1918 pcrx->inTail->tot_len = pcrx->inTail->len;
sunyiming 1:6465a3f5c58a 1919 if (pcrx->inTail != pcrx->inHead) {
sunyiming 1:6465a3f5c58a 1920 pbuf_cat(pcrx->inHead, pcrx->inTail);
sunyiming 1:6465a3f5c58a 1921 /* give up the inTail reference now */
sunyiming 1:6465a3f5c58a 1922 pcrx->inTail = NULL;
sunyiming 1:6465a3f5c58a 1923 }
sunyiming 1:6465a3f5c58a 1924 }
sunyiming 1:6465a3f5c58a 1925 /* If we haven't started a packet, we need a packet header. */
sunyiming 1:6465a3f5c58a 1926 nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
sunyiming 1:6465a3f5c58a 1927 if (nextNBuf == NULL) {
sunyiming 1:6465a3f5c58a 1928 /* No free buffers. Drop the input packet and let the
sunyiming 1:6465a3f5c58a 1929 * higher layers deal with it. Continue processing
sunyiming 1:6465a3f5c58a 1930 * the received pbuf chain in case a new packet starts. */
sunyiming 1:6465a3f5c58a 1931 PPPDEBUG(LOG_ERR, ("pppInProc[%d]: NO FREE MBUFS!\n", pcrx->pd));
sunyiming 1:6465a3f5c58a 1932 LINK_STATS_INC(link.memerr);
sunyiming 1:6465a3f5c58a 1933 pppDrop(pcrx);
sunyiming 1:6465a3f5c58a 1934 pcrx->inState = PDSTART; /* Wait for flag sequence. */
sunyiming 1:6465a3f5c58a 1935 break;
sunyiming 1:6465a3f5c58a 1936 }
sunyiming 1:6465a3f5c58a 1937 if (pcrx->inHead == NULL) {
sunyiming 1:6465a3f5c58a 1938 struct pppInputHeader *pih = nextNBuf->payload;
sunyiming 1:6465a3f5c58a 1939
sunyiming 1:6465a3f5c58a 1940 pih->unit = pcrx->pd;
sunyiming 1:6465a3f5c58a 1941 pih->proto = pcrx->inProtocol;
sunyiming 1:6465a3f5c58a 1942
sunyiming 1:6465a3f5c58a 1943 nextNBuf->len += sizeof(*pih);
sunyiming 1:6465a3f5c58a 1944
sunyiming 1:6465a3f5c58a 1945 pcrx->inHead = nextNBuf;
sunyiming 1:6465a3f5c58a 1946 }
sunyiming 1:6465a3f5c58a 1947 pcrx->inTail = nextNBuf;
sunyiming 1:6465a3f5c58a 1948 }
sunyiming 1:6465a3f5c58a 1949 /* Load character into buffer. */
sunyiming 1:6465a3f5c58a 1950 ((u_char*)pcrx->inTail->payload)[pcrx->inTail->len++] = curChar;
sunyiming 1:6465a3f5c58a 1951 break;
sunyiming 1:6465a3f5c58a 1952 }
sunyiming 1:6465a3f5c58a 1953
sunyiming 1:6465a3f5c58a 1954 /* update the frame check sequence number. */
sunyiming 1:6465a3f5c58a 1955 pcrx->inFCS = PPP_FCS(pcrx->inFCS, curChar);
sunyiming 1:6465a3f5c58a 1956 }
sunyiming 1:6465a3f5c58a 1957 } /* while (l-- > 0), all bytes processed */
sunyiming 1:6465a3f5c58a 1958
sunyiming 1:6465a3f5c58a 1959 avRandomize();
sunyiming 1:6465a3f5c58a 1960 }
sunyiming 1:6465a3f5c58a 1961 #endif /* PPPOS_SUPPORT */
sunyiming 1:6465a3f5c58a 1962
sunyiming 1:6465a3f5c58a 1963 #if PPPOE_SUPPORT
sunyiming 1:6465a3f5c58a 1964 void
sunyiming 1:6465a3f5c58a 1965 pppInProcOverEthernet(int pd, struct pbuf *pb)
sunyiming 1:6465a3f5c58a 1966 {
sunyiming 1:6465a3f5c58a 1967 struct pppInputHeader *pih;
sunyiming 1:6465a3f5c58a 1968 u16_t inProtocol;
sunyiming 1:6465a3f5c58a 1969
sunyiming 1:6465a3f5c58a 1970 if(pb->len < sizeof(inProtocol)) {
sunyiming 1:6465a3f5c58a 1971 PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: too small for protocol field\n"));
sunyiming 1:6465a3f5c58a 1972 goto drop;
sunyiming 1:6465a3f5c58a 1973 }
sunyiming 1:6465a3f5c58a 1974
sunyiming 1:6465a3f5c58a 1975 inProtocol = (((u8_t *)pb->payload)[0] << 8) | ((u8_t*)pb->payload)[1];
sunyiming 1:6465a3f5c58a 1976
sunyiming 1:6465a3f5c58a 1977 /* make room for pppInputHeader - should not fail */
sunyiming 1:6465a3f5c58a 1978 if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) {
sunyiming 1:6465a3f5c58a 1979 PPPDEBUG(LOG_ERR, ("pppInProcOverEthernet: could not allocate room for header\n"));
sunyiming 1:6465a3f5c58a 1980 goto drop;
sunyiming 1:6465a3f5c58a 1981 }
sunyiming 1:6465a3f5c58a 1982
sunyiming 1:6465a3f5c58a 1983 pih = pb->payload;
sunyiming 1:6465a3f5c58a 1984
sunyiming 1:6465a3f5c58a 1985 pih->unit = pd;
sunyiming 1:6465a3f5c58a 1986 pih->proto = inProtocol;
sunyiming 1:6465a3f5c58a 1987
sunyiming 1:6465a3f5c58a 1988 /* Dispatch the packet thereby consuming it. */
sunyiming 1:6465a3f5c58a 1989 pppInput(pb);
sunyiming 1:6465a3f5c58a 1990 return;
sunyiming 1:6465a3f5c58a 1991
sunyiming 1:6465a3f5c58a 1992 drop:
sunyiming 1:6465a3f5c58a 1993 LINK_STATS_INC(link.drop);
sunyiming 1:6465a3f5c58a 1994 snmp_inc_ifindiscards(&pppControl[pd].netif);
sunyiming 1:6465a3f5c58a 1995 pbuf_free(pb);
sunyiming 1:6465a3f5c58a 1996 return;
sunyiming 1:6465a3f5c58a 1997 }
sunyiming 1:6465a3f5c58a 1998 #endif /* PPPOE_SUPPORT */
sunyiming 1:6465a3f5c58a 1999
sunyiming 1:6465a3f5c58a 2000 #if LWIP_NETIF_STATUS_CALLBACK
sunyiming 1:6465a3f5c58a 2001 /** Set the status callback of a PPP's netif
sunyiming 1:6465a3f5c58a 2002 *
sunyiming 1:6465a3f5c58a 2003 * @param pd The PPP descriptor returned by pppOpen()
sunyiming 1:6465a3f5c58a 2004 * @param status_callback pointer to the status callback function
sunyiming 1:6465a3f5c58a 2005 *
sunyiming 1:6465a3f5c58a 2006 * @see netif_set_status_callback
sunyiming 1:6465a3f5c58a 2007 */
sunyiming 1:6465a3f5c58a 2008 void
sunyiming 1:6465a3f5c58a 2009 ppp_set_netif_statuscallback(int pd, netif_status_callback_fn status_callback)
sunyiming 1:6465a3f5c58a 2010 {
sunyiming 1:6465a3f5c58a 2011 netif_set_status_callback(&pppControl[pd].netif, status_callback);
sunyiming 1:6465a3f5c58a 2012 }
sunyiming 1:6465a3f5c58a 2013 #endif /* LWIP_NETIF_STATUS_CALLBACK */
sunyiming 1:6465a3f5c58a 2014
sunyiming 1:6465a3f5c58a 2015 #if LWIP_NETIF_LINK_CALLBACK
sunyiming 1:6465a3f5c58a 2016 /** Set the link callback of a PPP's netif
sunyiming 1:6465a3f5c58a 2017 *
sunyiming 1:6465a3f5c58a 2018 * @param pd The PPP descriptor returned by pppOpen()
sunyiming 1:6465a3f5c58a 2019 * @param link_callback pointer to the link callback function
sunyiming 1:6465a3f5c58a 2020 *
sunyiming 1:6465a3f5c58a 2021 * @see netif_set_link_callback
sunyiming 1:6465a3f5c58a 2022 */
sunyiming 1:6465a3f5c58a 2023 void
sunyiming 1:6465a3f5c58a 2024 ppp_set_netif_linkcallback(int pd, netif_status_callback_fn link_callback)
sunyiming 1:6465a3f5c58a 2025 {
sunyiming 1:6465a3f5c58a 2026 netif_set_link_callback(&pppControl[pd].netif, link_callback);
sunyiming 1:6465a3f5c58a 2027 }
sunyiming 1:6465a3f5c58a 2028 #endif /* LWIP_NETIF_LINK_CALLBACK */
sunyiming 1:6465a3f5c58a 2029
sunyiming 1:6465a3f5c58a 2030 #endif /* PPP_SUPPORT */