[457] | 1 | /*****************************************************************************
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| 2 | * ppp.c - Network Point to Point Protocol program file.
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| 3 | *
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| 4 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
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| 5 | * portions Copyright (c) 1997 by Global Election Systems Inc.
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| 6 | *
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| 7 | * The authors hereby grant permission to use, copy, modify, distribute,
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| 8 | * and license this software and its documentation for any purpose, provided
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| 9 | * that existing copyright notices are retained in all copies and that this
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| 10 | * notice and the following disclaimer are included verbatim in any
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| 11 | * distributions. No written agreement, license, or royalty fee is required
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| 12 | * for any of the authorized uses.
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| 13 | *
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| 14 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
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| 15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 17 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 24 | *
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| 25 | ******************************************************************************
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| 26 | * REVISION HISTORY
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| 27 | *
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| 28 | * 03-01-01 Marc Boucher <marc@mbsi.ca>
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| 29 | * Ported to lwIP.
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| 30 | * 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
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| 31 | * Original.
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| 32 | *****************************************************************************/
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| 33 |
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| 34 | /*
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| 35 | * ppp_defs.h - PPP definitions.
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| 36 | *
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| 37 | * if_pppvar.h - private structures and declarations for PPP.
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| 38 | *
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| 39 | * Copyright (c) 1994 The Australian National University.
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| 40 | * All rights reserved.
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| 41 | *
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| 42 | * Permission to use, copy, modify, and distribute this software and its
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| 43 | * documentation is hereby granted, provided that the above copyright
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| 44 | * notice appears in all copies. This software is provided without any
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| 45 | * warranty, express or implied. The Australian National University
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| 46 | * makes no representations about the suitability of this software for
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| 47 | * any purpose.
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| 48 | *
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| 49 | * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
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| 50 | * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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| 51 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
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| 52 | * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
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| 53 | * OF SUCH DAMAGE.
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| 54 | *
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| 55 | * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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| 56 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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| 57 | * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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| 58 | * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
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| 59 | * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
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| 60 | * OR MODIFICATIONS.
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| 61 | */
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| 62 |
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| 63 | /*
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| 64 | * if_ppp.h - Point-to-Point Protocol definitions.
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| 65 | *
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| 66 | * Copyright (c) 1989 Carnegie Mellon University.
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| 67 | * All rights reserved.
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| 68 | *
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| 69 | * Redistribution and use in source and binary forms are permitted
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| 70 | * provided that the above copyright notice and this paragraph are
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| 71 | * duplicated in all such forms and that any documentation,
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| 72 | * advertising materials, and other materials related to such
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| 73 | * distribution and use acknowledge that the software was developed
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| 74 | * by Carnegie Mellon University. The name of the
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| 75 | * University may not be used to endorse or promote products derived
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| 76 | * from this software without specific prior written permission.
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| 77 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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| 78 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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| 79 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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| 80 | */
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| 81 |
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| 82 | /**
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| 83 | * @defgroup ppp PPP
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| 84 | * @ingroup netifs
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| 85 | * @verbinclude "ppp.txt"
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| 86 | */
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| 87 |
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| 88 | #include "netif/ppp/ppp_opts.h"
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| 89 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
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| 90 |
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| 91 | #include "lwip/pbuf.h"
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| 92 | #include "lwip/stats.h"
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| 93 | #include "lwip/sys.h"
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| 94 | #include "lwip/tcpip.h"
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| 95 | #include "lwip/api.h"
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| 96 | #include "lwip/snmp.h"
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| 97 | #include "lwip/ip4.h" /* for ip4_input() */
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| 98 | #if PPP_IPV6_SUPPORT
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| 99 | #include "lwip/ip6.h" /* for ip6_input() */
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| 100 | #endif /* PPP_IPV6_SUPPORT */
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| 101 | #include "lwip/dns.h"
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| 102 |
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| 103 | #include "netif/ppp/ppp_impl.h"
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| 104 | #include "netif/ppp/pppos.h"
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| 105 |
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| 106 | #include "netif/ppp/fsm.h"
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| 107 | #include "netif/ppp/lcp.h"
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| 108 | #include "netif/ppp/magic.h"
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| 109 |
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| 110 | #if PAP_SUPPORT
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| 111 | #include "netif/ppp/upap.h"
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| 112 | #endif /* PAP_SUPPORT */
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| 113 | #if CHAP_SUPPORT
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| 114 | #include "netif/ppp/chap-new.h"
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| 115 | #endif /* CHAP_SUPPORT */
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| 116 | #if EAP_SUPPORT
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| 117 | #include "netif/ppp/eap.h"
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| 118 | #endif /* EAP_SUPPORT */
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| 119 | #if CCP_SUPPORT
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| 120 | #include "netif/ppp/ccp.h"
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| 121 | #endif /* CCP_SUPPORT */
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| 122 | #if MPPE_SUPPORT
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| 123 | #include "netif/ppp/mppe.h"
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| 124 | #endif /* MPPE_SUPPORT */
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| 125 | #if ECP_SUPPORT
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| 126 | #include "netif/ppp/ecp.h"
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| 127 | #endif /* EAP_SUPPORT */
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| 128 | #if VJ_SUPPORT
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| 129 | #include "netif/ppp/vj.h"
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| 130 | #endif /* VJ_SUPPORT */
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| 131 | #if PPP_IPV4_SUPPORT
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| 132 | #include "netif/ppp/ipcp.h"
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| 133 | #endif /* PPP_IPV4_SUPPORT */
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| 134 | #if PPP_IPV6_SUPPORT
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| 135 | #include "netif/ppp/ipv6cp.h"
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| 136 | #endif /* PPP_IPV6_SUPPORT */
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| 137 |
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| 138 | /*************************/
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| 139 | /*** LOCAL DEFINITIONS ***/
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| 140 | /*************************/
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| 141 |
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| 142 | /* Memory pools */
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| 143 | #if PPPOS_SUPPORT
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| 144 | LWIP_MEMPOOL_PROTOTYPE(PPPOS_PCB);
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| 145 | #endif
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| 146 | #if PPPOE_SUPPORT
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| 147 | LWIP_MEMPOOL_PROTOTYPE(PPPOE_IF);
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| 148 | #endif
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| 149 | #if PPPOL2TP_SUPPORT
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| 150 | LWIP_MEMPOOL_PROTOTYPE(PPPOL2TP_PCB);
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| 151 | #endif
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| 152 | #if LWIP_PPP_API && LWIP_MPU_COMPATIBLE
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| 153 | LWIP_MEMPOOL_PROTOTYPE(PPPAPI_MSG);
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| 154 | #endif
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| 155 | LWIP_MEMPOOL_DECLARE(PPP_PCB, MEMP_NUM_PPP_PCB, sizeof(ppp_pcb), "PPP_PCB")
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| 156 |
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| 157 | /* FIXME: add stats per PPP session */
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| 158 | #if PPP_STATS_SUPPORT
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| 159 | static struct timeval start_time; /* Time when link was started. */
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| 160 | static struct pppd_stats old_link_stats;
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| 161 | struct pppd_stats link_stats;
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| 162 | unsigned link_connect_time;
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| 163 | int link_stats_valid;
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| 164 | #endif /* PPP_STATS_SUPPORT */
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| 165 |
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| 166 | /*
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| 167 | * PPP Data Link Layer "protocol" table.
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| 168 | * One entry per supported protocol.
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| 169 | * The last entry must be NULL.
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| 170 | */
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| 171 | const struct protent* const protocols[] = {
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| 172 | &lcp_protent,
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| 173 | #if PAP_SUPPORT
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| 174 | &pap_protent,
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| 175 | #endif /* PAP_SUPPORT */
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| 176 | #if CHAP_SUPPORT
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| 177 | &chap_protent,
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| 178 | #endif /* CHAP_SUPPORT */
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| 179 | #if CBCP_SUPPORT
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| 180 | &cbcp_protent,
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| 181 | #endif /* CBCP_SUPPORT */
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| 182 | #if PPP_IPV4_SUPPORT
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| 183 | &ipcp_protent,
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| 184 | #endif /* PPP_IPV4_SUPPORT */
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| 185 | #if PPP_IPV6_SUPPORT
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| 186 | &ipv6cp_protent,
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| 187 | #endif /* PPP_IPV6_SUPPORT */
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| 188 | #if CCP_SUPPORT
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| 189 | &ccp_protent,
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| 190 | #endif /* CCP_SUPPORT */
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| 191 | #if ECP_SUPPORT
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| 192 | &ecp_protent,
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| 193 | #endif /* ECP_SUPPORT */
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| 194 | #ifdef AT_CHANGE
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| 195 | &atcp_protent,
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| 196 | #endif /* AT_CHANGE */
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| 197 | #if EAP_SUPPORT
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| 198 | &eap_protent,
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| 199 | #endif /* EAP_SUPPORT */
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| 200 | NULL
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| 201 | };
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| 202 |
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| 203 | /* Prototypes for procedures local to this file. */
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| 204 | static void ppp_do_connect(void *arg);
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| 205 | static err_t ppp_netif_init_cb(struct netif *netif);
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| 206 | #if PPP_IPV4_SUPPORT
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| 207 | static err_t ppp_netif_output_ip4(struct netif *netif, struct pbuf *pb, const ip4_addr_t *ipaddr);
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| 208 | #endif /* PPP_IPV4_SUPPORT */
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| 209 | #if PPP_IPV6_SUPPORT
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| 210 | static err_t ppp_netif_output_ip6(struct netif *netif, struct pbuf *pb, const ip6_addr_t *ipaddr);
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| 211 | #endif /* PPP_IPV6_SUPPORT */
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| 212 | static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u16_t protocol);
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| 213 |
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| 214 | /***********************************/
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| 215 | /*** PUBLIC FUNCTION DEFINITIONS ***/
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| 216 | /***********************************/
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| 217 | #if PPP_AUTH_SUPPORT
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| 218 | void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd) {
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| 219 | LWIP_ASSERT_CORE_LOCKED();
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| 220 | #if PAP_SUPPORT
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| 221 | pcb->settings.refuse_pap = !(authtype & PPPAUTHTYPE_PAP);
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| 222 | #endif /* PAP_SUPPORT */
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| 223 | #if CHAP_SUPPORT
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| 224 | pcb->settings.refuse_chap = !(authtype & PPPAUTHTYPE_CHAP);
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| 225 | #if MSCHAP_SUPPORT
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| 226 | pcb->settings.refuse_mschap = !(authtype & PPPAUTHTYPE_MSCHAP);
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| 227 | pcb->settings.refuse_mschap_v2 = !(authtype & PPPAUTHTYPE_MSCHAP_V2);
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| 228 | #endif /* MSCHAP_SUPPORT */
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| 229 | #endif /* CHAP_SUPPORT */
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| 230 | #if EAP_SUPPORT
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| 231 | pcb->settings.refuse_eap = !(authtype & PPPAUTHTYPE_EAP);
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| 232 | #endif /* EAP_SUPPORT */
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| 233 | pcb->settings.user = user;
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| 234 | pcb->settings.passwd = passwd;
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| 235 | }
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| 236 | #endif /* PPP_AUTH_SUPPORT */
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| 237 |
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| 238 | #if MPPE_SUPPORT
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| 239 | /* Set MPPE configuration */
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| 240 | void ppp_set_mppe(ppp_pcb *pcb, u8_t flags) {
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| 241 | if (flags == PPP_MPPE_DISABLE) {
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| 242 | pcb->settings.require_mppe = 0;
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| 243 | return;
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| 244 | }
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| 245 |
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| 246 | pcb->settings.require_mppe = 1;
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| 247 | pcb->settings.refuse_mppe_stateful = !(flags & PPP_MPPE_ALLOW_STATEFUL);
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| 248 | pcb->settings.refuse_mppe_40 = !!(flags & PPP_MPPE_REFUSE_40);
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| 249 | pcb->settings.refuse_mppe_128 = !!(flags & PPP_MPPE_REFUSE_128);
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| 250 | }
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| 251 | #endif /* MPPE_SUPPORT */
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| 252 |
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| 253 | #if PPP_NOTIFY_PHASE
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| 254 | void ppp_set_notify_phase_callback(ppp_pcb *pcb, ppp_notify_phase_cb_fn notify_phase_cb) {
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| 255 | pcb->notify_phase_cb = notify_phase_cb;
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| 256 | notify_phase_cb(pcb, pcb->phase, pcb->ctx_cb);
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| 257 | }
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| 258 | #endif /* PPP_NOTIFY_PHASE */
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| 259 |
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| 260 | /*
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| 261 | * Initiate a PPP connection.
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| 262 | *
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| 263 | * This can only be called if PPP is in the dead phase.
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| 264 | *
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| 265 | * Holdoff is the time to wait (in seconds) before initiating
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| 266 | * the connection.
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| 267 | *
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| 268 | * If this port connects to a modem, the modem connection must be
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| 269 | * established before calling this.
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| 270 | */
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| 271 | err_t ppp_connect(ppp_pcb *pcb, u16_t holdoff) {
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| 272 | LWIP_ASSERT_CORE_LOCKED();
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| 273 | if (pcb->phase != PPP_PHASE_DEAD) {
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| 274 | return ERR_ALREADY;
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| 275 | }
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| 276 |
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| 277 | PPPDEBUG(LOG_DEBUG, ("ppp_connect[%d]: holdoff=%d\n", pcb->netif->num, holdoff));
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| 278 |
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| 279 | magic_randomize();
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| 280 |
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| 281 | if (holdoff == 0) {
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| 282 | ppp_do_connect(pcb);
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| 283 | return ERR_OK;
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| 284 | }
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| 285 |
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| 286 | new_phase(pcb, PPP_PHASE_HOLDOFF);
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| 287 | sys_timeout((u32_t)(holdoff*1000), ppp_do_connect, pcb);
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| 288 | return ERR_OK;
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| 289 | }
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| 290 |
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| 291 | #if PPP_SERVER
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| 292 | /*
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| 293 | * Listen for an incoming PPP connection.
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| 294 | *
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| 295 | * This can only be called if PPP is in the dead phase.
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| 296 | *
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| 297 | * If this port connects to a modem, the modem connection must be
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| 298 | * established before calling this.
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| 299 | */
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| 300 | err_t ppp_listen(ppp_pcb *pcb) {
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| 301 | LWIP_ASSERT_CORE_LOCKED();
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| 302 | if (pcb->phase != PPP_PHASE_DEAD) {
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| 303 | return ERR_ALREADY;
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| 304 | }
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| 305 |
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| 306 | PPPDEBUG(LOG_DEBUG, ("ppp_listen[%d]\n", pcb->netif->num));
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| 307 |
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| 308 | magic_randomize();
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| 309 |
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| 310 | if (pcb->link_cb->listen) {
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| 311 | new_phase(pcb, PPP_PHASE_INITIALIZE);
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| 312 | pcb->link_cb->listen(pcb, pcb->link_ctx_cb);
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| 313 | return ERR_OK;
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| 314 | }
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| 315 | return ERR_IF;
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| 316 | }
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| 317 | #endif /* PPP_SERVER */
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| 318 |
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| 319 | /*
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| 320 | * Initiate the end of a PPP connection.
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| 321 | * Any outstanding packets in the queues are dropped.
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| 322 | *
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| 323 | * Setting nocarrier to 1 close the PPP connection without initiating the
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| 324 | * shutdown procedure. Always using nocarrier = 0 is still recommended,
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| 325 | * this is going to take a little longer time if your link is down, but
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| 326 | * is a safer choice for the PPP state machine.
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| 327 | *
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| 328 | * Return 0 on success, an error code on failure.
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| 329 | */
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| 330 | err_t
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| 331 | ppp_close(ppp_pcb *pcb, u8_t nocarrier)
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| 332 | {
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| 333 | LWIP_ASSERT_CORE_LOCKED();
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| 334 |
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| 335 | pcb->err_code = PPPERR_USER;
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| 336 |
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| 337 | /* holdoff phase, cancel the reconnection */
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| 338 | if (pcb->phase == PPP_PHASE_HOLDOFF) {
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| 339 | sys_untimeout(ppp_do_connect, pcb);
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| 340 | new_phase(pcb, PPP_PHASE_DEAD);
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| 341 | }
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| 342 |
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| 343 | /* dead phase, nothing to do, call the status callback to be consistent */
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| 344 | if (pcb->phase == PPP_PHASE_DEAD) {
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| 345 | pcb->link_status_cb(pcb, pcb->err_code, pcb->ctx_cb);
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| 346 | return ERR_OK;
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| 347 | }
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| 348 |
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| 349 | /* Already terminating, nothing to do */
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| 350 | if (pcb->phase >= PPP_PHASE_TERMINATE) {
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| 351 | return ERR_INPROGRESS;
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| 352 | }
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| 353 |
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| 354 | /* LCP not open, close link protocol */
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| 355 | if (pcb->phase < PPP_PHASE_ESTABLISH) {
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| 356 | new_phase(pcb, PPP_PHASE_DISCONNECT);
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| 357 | ppp_link_terminated(pcb);
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| 358 | return ERR_OK;
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| 359 | }
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| 360 |
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| 361 | /*
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| 362 | * Only accept carrier lost signal on the stable running phase in order
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| 363 | * to prevent changing the PPP phase FSM in transition phases.
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| 364 | *
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| 365 | * Always using nocarrier = 0 is still recommended, this is going to
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| 366 | * take a little longer time, but is a safer choice from FSM point of view.
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| 367 | */
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| 368 | if (nocarrier && pcb->phase == PPP_PHASE_RUNNING) {
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| 369 | PPPDEBUG(LOG_DEBUG, ("ppp_close[%d]: carrier lost -> lcp_lowerdown\n", pcb->netif->num));
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| 370 | lcp_lowerdown(pcb);
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| 371 | /* forced link termination, this will force link protocol to disconnect. */
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| 372 | link_terminated(pcb);
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| 373 | return ERR_OK;
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| 374 | }
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| 375 |
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| 376 | /* Disconnect */
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| 377 | PPPDEBUG(LOG_DEBUG, ("ppp_close[%d]: kill_link -> lcp_close\n", pcb->netif->num));
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| 378 | /* LCP soft close request. */
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| 379 | lcp_close(pcb, "User request");
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| 380 | return ERR_OK;
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| 381 | }
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| 382 |
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| 383 | /*
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| 384 | * Release the control block.
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| 385 | *
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| 386 | * This can only be called if PPP is in the dead phase.
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| 387 | *
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| 388 | * You must use ppp_close() before if you wish to terminate
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| 389 | * an established PPP session.
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| 390 | *
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| 391 | * Return 0 on success, an error code on failure.
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| 392 | */
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| 393 | err_t ppp_free(ppp_pcb *pcb) {
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| 394 | err_t err;
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| 395 | LWIP_ASSERT_CORE_LOCKED();
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| 396 | if (pcb->phase != PPP_PHASE_DEAD) {
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| 397 | return ERR_CONN;
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| 398 | }
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| 399 |
|
---|
| 400 | PPPDEBUG(LOG_DEBUG, ("ppp_free[%d]\n", pcb->netif->num));
|
---|
| 401 |
|
---|
| 402 | netif_remove(pcb->netif);
|
---|
| 403 |
|
---|
| 404 | err = pcb->link_cb->free(pcb, pcb->link_ctx_cb);
|
---|
| 405 |
|
---|
| 406 | LWIP_MEMPOOL_FREE(PPP_PCB, pcb);
|
---|
| 407 | return err;
|
---|
| 408 | }
|
---|
| 409 |
|
---|
| 410 | /* Get and set parameters for the given connection.
|
---|
| 411 | * Return 0 on success, an error code on failure. */
|
---|
| 412 | err_t
|
---|
| 413 | ppp_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg)
|
---|
| 414 | {
|
---|
| 415 | LWIP_ASSERT_CORE_LOCKED();
|
---|
| 416 | if (pcb == NULL) {
|
---|
| 417 | return ERR_VAL;
|
---|
| 418 | }
|
---|
| 419 |
|
---|
| 420 | switch(cmd) {
|
---|
| 421 | case PPPCTLG_UPSTATUS: /* Get the PPP up status. */
|
---|
| 422 | if (!arg) {
|
---|
| 423 | goto fail;
|
---|
| 424 | }
|
---|
| 425 | *(int *)arg = (int)(0
|
---|
| 426 | #if PPP_IPV4_SUPPORT
|
---|
| 427 | || pcb->if4_up
|
---|
| 428 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 429 | #if PPP_IPV6_SUPPORT
|
---|
| 430 | || pcb->if6_up
|
---|
| 431 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 432 | );
|
---|
| 433 | return ERR_OK;
|
---|
| 434 |
|
---|
| 435 | case PPPCTLG_ERRCODE: /* Get the PPP error code. */
|
---|
| 436 | if (!arg) {
|
---|
| 437 | goto fail;
|
---|
| 438 | }
|
---|
| 439 | *(int *)arg = (int)(pcb->err_code);
|
---|
| 440 | return ERR_OK;
|
---|
| 441 |
|
---|
| 442 | default:
|
---|
| 443 | goto fail;
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | fail:
|
---|
| 447 | return ERR_VAL;
|
---|
| 448 | }
|
---|
| 449 |
|
---|
| 450 |
|
---|
| 451 | /**********************************/
|
---|
| 452 | /*** LOCAL FUNCTION DEFINITIONS ***/
|
---|
| 453 | /**********************************/
|
---|
| 454 |
|
---|
| 455 | static void ppp_do_connect(void *arg) {
|
---|
| 456 | ppp_pcb *pcb = (ppp_pcb*)arg;
|
---|
| 457 |
|
---|
| 458 | LWIP_ASSERT("pcb->phase == PPP_PHASE_DEAD || pcb->phase == PPP_PHASE_HOLDOFF", pcb->phase == PPP_PHASE_DEAD || pcb->phase == PPP_PHASE_HOLDOFF);
|
---|
| 459 |
|
---|
| 460 | new_phase(pcb, PPP_PHASE_INITIALIZE);
|
---|
| 461 | pcb->link_cb->connect(pcb, pcb->link_ctx_cb);
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | /*
|
---|
| 465 | * ppp_netif_init_cb - netif init callback
|
---|
| 466 | */
|
---|
| 467 | static err_t ppp_netif_init_cb(struct netif *netif) {
|
---|
| 468 | netif->name[0] = 'p';
|
---|
| 469 | netif->name[1] = 'p';
|
---|
| 470 | #if PPP_IPV4_SUPPORT
|
---|
| 471 | netif->output = ppp_netif_output_ip4;
|
---|
| 472 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 473 | #if PPP_IPV6_SUPPORT
|
---|
| 474 | netif->output_ip6 = ppp_netif_output_ip6;
|
---|
| 475 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 476 | netif->flags = NETIF_FLAG_UP;
|
---|
| 477 | #if LWIP_NETIF_HOSTNAME
|
---|
| 478 | /* @todo: Initialize interface hostname */
|
---|
| 479 | /* netif_set_hostname(netif, "lwip"); */
|
---|
| 480 | #endif /* LWIP_NETIF_HOSTNAME */
|
---|
| 481 | return ERR_OK;
|
---|
| 482 | }
|
---|
| 483 |
|
---|
| 484 | #if PPP_IPV4_SUPPORT
|
---|
| 485 | /*
|
---|
| 486 | * Send an IPv4 packet on the given connection.
|
---|
| 487 | */
|
---|
| 488 | static err_t ppp_netif_output_ip4(struct netif *netif, struct pbuf *pb, const ip4_addr_t *ipaddr) {
|
---|
| 489 | LWIP_UNUSED_ARG(ipaddr);
|
---|
| 490 | return ppp_netif_output(netif, pb, PPP_IP);
|
---|
| 491 | }
|
---|
| 492 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 493 |
|
---|
| 494 | #if PPP_IPV6_SUPPORT
|
---|
| 495 | /*
|
---|
| 496 | * Send an IPv6 packet on the given connection.
|
---|
| 497 | */
|
---|
| 498 | static err_t ppp_netif_output_ip6(struct netif *netif, struct pbuf *pb, const ip6_addr_t *ipaddr) {
|
---|
| 499 | LWIP_UNUSED_ARG(ipaddr);
|
---|
| 500 | return ppp_netif_output(netif, pb, PPP_IPV6);
|
---|
| 501 | }
|
---|
| 502 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 503 |
|
---|
| 504 | static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u16_t protocol) {
|
---|
| 505 | ppp_pcb *pcb = (ppp_pcb*)netif->state;
|
---|
| 506 | err_t err;
|
---|
| 507 | struct pbuf *fpb = NULL;
|
---|
| 508 |
|
---|
| 509 | /* Check that the link is up. */
|
---|
| 510 | if (0
|
---|
| 511 | #if PPP_IPV4_SUPPORT
|
---|
| 512 | || (protocol == PPP_IP && !pcb->if4_up)
|
---|
| 513 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 514 | #if PPP_IPV6_SUPPORT
|
---|
| 515 | || (protocol == PPP_IPV6 && !pcb->if6_up)
|
---|
| 516 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 517 | ) {
|
---|
| 518 | PPPDEBUG(LOG_ERR, ("ppp_netif_output[%d]: link not up\n", pcb->netif->num));
|
---|
| 519 | goto err_rte_drop;
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | #if MPPE_SUPPORT
|
---|
| 523 | /* If MPPE is required, refuse any IP packet until we are able to crypt them. */
|
---|
| 524 | if (pcb->settings.require_mppe && pcb->ccp_transmit_method != CI_MPPE) {
|
---|
| 525 | PPPDEBUG(LOG_ERR, ("ppp_netif_output[%d]: MPPE required, not up\n", pcb->netif->num));
|
---|
| 526 | goto err_rte_drop;
|
---|
| 527 | }
|
---|
| 528 | #endif /* MPPE_SUPPORT */
|
---|
| 529 |
|
---|
| 530 | #if VJ_SUPPORT
|
---|
| 531 | /*
|
---|
| 532 | * Attempt Van Jacobson header compression if VJ is configured and
|
---|
| 533 | * this is an IP packet.
|
---|
| 534 | */
|
---|
| 535 | if (protocol == PPP_IP && pcb->vj_enabled) {
|
---|
| 536 | switch (vj_compress_tcp(&pcb->vj_comp, &pb)) {
|
---|
| 537 | case TYPE_IP:
|
---|
| 538 | /* No change...
|
---|
| 539 | protocol = PPP_IP; */
|
---|
| 540 | break;
|
---|
| 541 | case TYPE_COMPRESSED_TCP:
|
---|
| 542 | /* vj_compress_tcp() returns a new allocated pbuf, indicate we should free
|
---|
| 543 | * our duplicated pbuf later */
|
---|
| 544 | fpb = pb;
|
---|
| 545 | protocol = PPP_VJC_COMP;
|
---|
| 546 | break;
|
---|
| 547 | case TYPE_UNCOMPRESSED_TCP:
|
---|
| 548 | /* vj_compress_tcp() returns a new allocated pbuf, indicate we should free
|
---|
| 549 | * our duplicated pbuf later */
|
---|
| 550 | fpb = pb;
|
---|
| 551 | protocol = PPP_VJC_UNCOMP;
|
---|
| 552 | break;
|
---|
| 553 | default:
|
---|
| 554 | PPPDEBUG(LOG_WARNING, ("ppp_netif_output[%d]: bad IP packet\n", pcb->netif->num));
|
---|
| 555 | LINK_STATS_INC(link.proterr);
|
---|
| 556 | LINK_STATS_INC(link.drop);
|
---|
| 557 | MIB2_STATS_NETIF_INC(pcb->netif, ifoutdiscards);
|
---|
| 558 | return ERR_VAL;
|
---|
| 559 | }
|
---|
| 560 | }
|
---|
| 561 | #endif /* VJ_SUPPORT */
|
---|
| 562 |
|
---|
| 563 | #if CCP_SUPPORT
|
---|
| 564 | switch (pcb->ccp_transmit_method) {
|
---|
| 565 | case 0:
|
---|
| 566 | break; /* Don't compress */
|
---|
| 567 | #if MPPE_SUPPORT
|
---|
| 568 | case CI_MPPE:
|
---|
| 569 | if ((err = mppe_compress(pcb, &pcb->mppe_comp, &pb, protocol)) != ERR_OK) {
|
---|
| 570 | LINK_STATS_INC(link.memerr);
|
---|
| 571 | LINK_STATS_INC(link.drop);
|
---|
| 572 | MIB2_STATS_NETIF_INC(netif, ifoutdiscards);
|
---|
| 573 | goto err;
|
---|
| 574 | }
|
---|
| 575 | /* if VJ compressor returned a new allocated pbuf, free it */
|
---|
| 576 | if (fpb) {
|
---|
| 577 | pbuf_free(fpb);
|
---|
| 578 | }
|
---|
| 579 | /* mppe_compress() returns a new allocated pbuf, indicate we should free
|
---|
| 580 | * our duplicated pbuf later */
|
---|
| 581 | fpb = pb;
|
---|
| 582 | protocol = PPP_COMP;
|
---|
| 583 | break;
|
---|
| 584 | #endif /* MPPE_SUPPORT */
|
---|
| 585 | default:
|
---|
| 586 | PPPDEBUG(LOG_ERR, ("ppp_netif_output[%d]: bad CCP transmit method\n", pcb->netif->num));
|
---|
| 587 | goto err_rte_drop; /* Cannot really happen, we only negotiate what we are able to do */
|
---|
| 588 | }
|
---|
| 589 | #endif /* CCP_SUPPORT */
|
---|
| 590 |
|
---|
| 591 | err = pcb->link_cb->netif_output(pcb, pcb->link_ctx_cb, pb, protocol);
|
---|
| 592 | goto err;
|
---|
| 593 |
|
---|
| 594 | err_rte_drop:
|
---|
| 595 | err = ERR_RTE;
|
---|
| 596 | LINK_STATS_INC(link.rterr);
|
---|
| 597 | LINK_STATS_INC(link.drop);
|
---|
| 598 | MIB2_STATS_NETIF_INC(netif, ifoutdiscards);
|
---|
| 599 | err:
|
---|
| 600 | if (fpb) {
|
---|
| 601 | pbuf_free(fpb);
|
---|
| 602 | }
|
---|
| 603 | return err;
|
---|
| 604 | }
|
---|
| 605 |
|
---|
| 606 | /************************************/
|
---|
| 607 | /*** PRIVATE FUNCTION DEFINITIONS ***/
|
---|
| 608 | /************************************/
|
---|
| 609 |
|
---|
| 610 | /* Initialize the PPP subsystem. */
|
---|
| 611 | int ppp_init(void)
|
---|
| 612 | {
|
---|
| 613 | #if PPPOS_SUPPORT
|
---|
| 614 | LWIP_MEMPOOL_INIT(PPPOS_PCB);
|
---|
| 615 | #endif
|
---|
| 616 | #if PPPOE_SUPPORT
|
---|
| 617 | LWIP_MEMPOOL_INIT(PPPOE_IF);
|
---|
| 618 | #endif
|
---|
| 619 | #if PPPOL2TP_SUPPORT
|
---|
| 620 | LWIP_MEMPOOL_INIT(PPPOL2TP_PCB);
|
---|
| 621 | #endif
|
---|
| 622 | #if LWIP_PPP_API && LWIP_MPU_COMPATIBLE
|
---|
| 623 | LWIP_MEMPOOL_INIT(PPPAPI_MSG);
|
---|
| 624 | #endif
|
---|
| 625 |
|
---|
| 626 | LWIP_MEMPOOL_INIT(PPP_PCB);
|
---|
| 627 |
|
---|
| 628 | /*
|
---|
| 629 | * Initialize magic number generator now so that protocols may
|
---|
| 630 | * use magic numbers in initialization.
|
---|
| 631 | */
|
---|
| 632 | magic_init();
|
---|
| 633 |
|
---|
| 634 | return 0;
|
---|
| 635 | }
|
---|
| 636 |
|
---|
| 637 | /*
|
---|
| 638 | * Create a new PPP control block.
|
---|
| 639 | *
|
---|
| 640 | * This initializes the PPP control block but does not
|
---|
| 641 | * attempt to negotiate the LCP session.
|
---|
| 642 | *
|
---|
| 643 | * Return a new PPP connection control block pointer
|
---|
| 644 | * on success or a null pointer on failure.
|
---|
| 645 | */
|
---|
| 646 | ppp_pcb *ppp_new(struct netif *pppif, const struct link_callbacks *callbacks, void *link_ctx_cb, ppp_link_status_cb_fn link_status_cb, void *ctx_cb) {
|
---|
| 647 | ppp_pcb *pcb;
|
---|
| 648 | const struct protent *protp;
|
---|
| 649 | int i;
|
---|
| 650 |
|
---|
| 651 | /* PPP is single-threaded: without a callback,
|
---|
| 652 | * there is no way to know when the link is up. */
|
---|
| 653 | if (link_status_cb == NULL) {
|
---|
| 654 | return NULL;
|
---|
| 655 | }
|
---|
| 656 |
|
---|
| 657 | pcb = (ppp_pcb*)LWIP_MEMPOOL_ALLOC(PPP_PCB);
|
---|
| 658 | if (pcb == NULL) {
|
---|
| 659 | return NULL;
|
---|
| 660 | }
|
---|
| 661 |
|
---|
| 662 | memset(pcb, 0, sizeof(ppp_pcb));
|
---|
| 663 |
|
---|
| 664 | /* default configuration */
|
---|
| 665 | #if PAP_SUPPORT
|
---|
| 666 | pcb->settings.pap_timeout_time = UPAP_DEFTIMEOUT;
|
---|
| 667 | pcb->settings.pap_max_transmits = UPAP_DEFTRANSMITS;
|
---|
| 668 | #if PPP_SERVER
|
---|
| 669 | pcb->settings.pap_req_timeout = UPAP_DEFREQTIME;
|
---|
| 670 | #endif /* PPP_SERVER */
|
---|
| 671 | #endif /* PAP_SUPPORT */
|
---|
| 672 |
|
---|
| 673 | #if CHAP_SUPPORT
|
---|
| 674 | pcb->settings.chap_timeout_time = CHAP_DEFTIMEOUT;
|
---|
| 675 | pcb->settings.chap_max_transmits = CHAP_DEFTRANSMITS;
|
---|
| 676 | #if PPP_SERVER
|
---|
| 677 | pcb->settings.chap_rechallenge_time = CHAP_DEFRECHALLENGETIME;
|
---|
| 678 | #endif /* PPP_SERVER */
|
---|
| 679 | #endif /* CHAP_SUPPPORT */
|
---|
| 680 |
|
---|
| 681 | #if EAP_SUPPORT
|
---|
| 682 | pcb->settings.eap_req_time = EAP_DEFREQTIME;
|
---|
| 683 | pcb->settings.eap_allow_req = EAP_DEFALLOWREQ;
|
---|
| 684 | #if PPP_SERVER
|
---|
| 685 | pcb->settings.eap_timeout_time = EAP_DEFTIMEOUT;
|
---|
| 686 | pcb->settings.eap_max_transmits = EAP_DEFTRANSMITS;
|
---|
| 687 | #endif /* PPP_SERVER */
|
---|
| 688 | #endif /* EAP_SUPPORT */
|
---|
| 689 |
|
---|
| 690 | pcb->settings.lcp_loopbackfail = LCP_DEFLOOPBACKFAIL;
|
---|
| 691 | pcb->settings.lcp_echo_interval = LCP_ECHOINTERVAL;
|
---|
| 692 | pcb->settings.lcp_echo_fails = LCP_MAXECHOFAILS;
|
---|
| 693 |
|
---|
| 694 | pcb->settings.fsm_timeout_time = FSM_DEFTIMEOUT;
|
---|
| 695 | pcb->settings.fsm_max_conf_req_transmits = FSM_DEFMAXCONFREQS;
|
---|
| 696 | pcb->settings.fsm_max_term_transmits = FSM_DEFMAXTERMREQS;
|
---|
| 697 | pcb->settings.fsm_max_nak_loops = FSM_DEFMAXNAKLOOPS;
|
---|
| 698 |
|
---|
| 699 | pcb->netif = pppif;
|
---|
| 700 | MIB2_INIT_NETIF(pppif, snmp_ifType_ppp, 0);
|
---|
| 701 | if (!netif_add(pcb->netif,
|
---|
| 702 | #if LWIP_IPV4
|
---|
| 703 | IP4_ADDR_ANY4, IP4_ADDR_BROADCAST, IP4_ADDR_ANY4,
|
---|
| 704 | #endif /* LWIP_IPV4 */
|
---|
| 705 | (void *)pcb, ppp_netif_init_cb, NULL)) {
|
---|
| 706 | LWIP_MEMPOOL_FREE(PPP_PCB, pcb);
|
---|
| 707 | PPPDEBUG(LOG_ERR, ("ppp_new: netif_add failed\n"));
|
---|
| 708 | return NULL;
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 | pcb->link_cb = callbacks;
|
---|
| 712 | pcb->link_ctx_cb = link_ctx_cb;
|
---|
| 713 | pcb->link_status_cb = link_status_cb;
|
---|
| 714 | pcb->ctx_cb = ctx_cb;
|
---|
| 715 |
|
---|
| 716 | /*
|
---|
| 717 | * Initialize each protocol.
|
---|
| 718 | */
|
---|
| 719 | for (i = 0; (protp = protocols[i]) != NULL; ++i) {
|
---|
| 720 | (*protp->init)(pcb);
|
---|
| 721 | }
|
---|
| 722 |
|
---|
| 723 | new_phase(pcb, PPP_PHASE_DEAD);
|
---|
| 724 | return pcb;
|
---|
| 725 | }
|
---|
| 726 |
|
---|
| 727 | /** Initiate LCP open request */
|
---|
| 728 | void ppp_start(ppp_pcb *pcb) {
|
---|
| 729 | PPPDEBUG(LOG_DEBUG, ("ppp_start[%d]\n", pcb->netif->num));
|
---|
| 730 |
|
---|
| 731 | /* Clean data not taken care by anything else, mostly shared data. */
|
---|
| 732 | #if PPP_STATS_SUPPORT
|
---|
| 733 | link_stats_valid = 0;
|
---|
| 734 | #endif /* PPP_STATS_SUPPORT */
|
---|
| 735 | #if MPPE_SUPPORT
|
---|
| 736 | pcb->mppe_keys_set = 0;
|
---|
| 737 | memset(&pcb->mppe_comp, 0, sizeof(pcb->mppe_comp));
|
---|
| 738 | memset(&pcb->mppe_decomp, 0, sizeof(pcb->mppe_decomp));
|
---|
| 739 | #endif /* MPPE_SUPPORT */
|
---|
| 740 | #if VJ_SUPPORT
|
---|
| 741 | vj_compress_init(&pcb->vj_comp);
|
---|
| 742 | #endif /* VJ_SUPPORT */
|
---|
| 743 |
|
---|
| 744 | /* Start protocol */
|
---|
| 745 | new_phase(pcb, PPP_PHASE_ESTABLISH);
|
---|
| 746 | lcp_open(pcb);
|
---|
| 747 | lcp_lowerup(pcb);
|
---|
| 748 | PPPDEBUG(LOG_DEBUG, ("ppp_start[%d]: finished\n", pcb->netif->num));
|
---|
| 749 | }
|
---|
| 750 |
|
---|
| 751 | /** Called when link failed to setup */
|
---|
| 752 | void ppp_link_failed(ppp_pcb *pcb) {
|
---|
| 753 | PPPDEBUG(LOG_DEBUG, ("ppp_link_failed[%d]\n", pcb->netif->num));
|
---|
| 754 | new_phase(pcb, PPP_PHASE_DEAD);
|
---|
| 755 | pcb->err_code = PPPERR_OPEN;
|
---|
| 756 | pcb->link_status_cb(pcb, pcb->err_code, pcb->ctx_cb);
|
---|
| 757 | }
|
---|
| 758 |
|
---|
| 759 | /** Called when link is normally down (i.e. it was asked to end) */
|
---|
| 760 | void ppp_link_end(ppp_pcb *pcb) {
|
---|
| 761 | PPPDEBUG(LOG_DEBUG, ("ppp_link_end[%d]\n", pcb->netif->num));
|
---|
| 762 | new_phase(pcb, PPP_PHASE_DEAD);
|
---|
| 763 | if (pcb->err_code == PPPERR_NONE) {
|
---|
| 764 | pcb->err_code = PPPERR_CONNECT;
|
---|
| 765 | }
|
---|
| 766 | pcb->link_status_cb(pcb, pcb->err_code, pcb->ctx_cb);
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 | /*
|
---|
| 770 | * Pass the processed input packet to the appropriate handler.
|
---|
| 771 | * This function and all handlers run in the context of the tcpip_thread
|
---|
| 772 | */
|
---|
| 773 | void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
|
---|
| 774 | u16_t protocol;
|
---|
| 775 | #if PPP_DEBUG && PPP_PROTOCOLNAME
|
---|
| 776 | const char *pname;
|
---|
| 777 | #endif /* PPP_DEBUG && PPP_PROTOCOLNAME */
|
---|
| 778 |
|
---|
| 779 | magic_randomize();
|
---|
| 780 |
|
---|
| 781 | if (pb->len < 2) {
|
---|
| 782 | PPPDEBUG(LOG_ERR, ("ppp_input[%d]: packet too short\n", pcb->netif->num));
|
---|
| 783 | goto drop;
|
---|
| 784 | }
|
---|
| 785 | protocol = (((u8_t *)pb->payload)[0] << 8) | ((u8_t*)pb->payload)[1];
|
---|
| 786 |
|
---|
| 787 | #if PRINTPKT_SUPPORT
|
---|
| 788 | ppp_dump_packet(pcb, "rcvd", (unsigned char *)pb->payload, pb->len);
|
---|
| 789 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 790 |
|
---|
| 791 | pbuf_remove_header(pb, sizeof(protocol));
|
---|
| 792 |
|
---|
| 793 | LINK_STATS_INC(link.recv);
|
---|
| 794 | MIB2_STATS_NETIF_INC(pcb->netif, ifinucastpkts);
|
---|
| 795 | MIB2_STATS_NETIF_ADD(pcb->netif, ifinoctets, pb->tot_len);
|
---|
| 796 |
|
---|
| 797 | /*
|
---|
| 798 | * Toss all non-LCP packets unless LCP is OPEN.
|
---|
| 799 | */
|
---|
| 800 | if (protocol != PPP_LCP && pcb->lcp_fsm.state != PPP_FSM_OPENED) {
|
---|
| 801 | ppp_dbglog("Discarded non-LCP packet when LCP not open");
|
---|
| 802 | goto drop;
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | /*
|
---|
| 806 | * Until we get past the authentication phase, toss all packets
|
---|
| 807 | * except LCP, LQR and authentication packets.
|
---|
| 808 | */
|
---|
| 809 | if (pcb->phase <= PPP_PHASE_AUTHENTICATE
|
---|
| 810 | && !(protocol == PPP_LCP
|
---|
| 811 | #if LQR_SUPPORT
|
---|
| 812 | || protocol == PPP_LQR
|
---|
| 813 | #endif /* LQR_SUPPORT */
|
---|
| 814 | #if PAP_SUPPORT
|
---|
| 815 | || protocol == PPP_PAP
|
---|
| 816 | #endif /* PAP_SUPPORT */
|
---|
| 817 | #if CHAP_SUPPORT
|
---|
| 818 | || protocol == PPP_CHAP
|
---|
| 819 | #endif /* CHAP_SUPPORT */
|
---|
| 820 | #if EAP_SUPPORT
|
---|
| 821 | || protocol == PPP_EAP
|
---|
| 822 | #endif /* EAP_SUPPORT */
|
---|
| 823 | )) {
|
---|
| 824 | ppp_dbglog("discarding proto 0x%x in phase %d", protocol, pcb->phase);
|
---|
| 825 | goto drop;
|
---|
| 826 | }
|
---|
| 827 |
|
---|
| 828 | #if CCP_SUPPORT
|
---|
| 829 | #if MPPE_SUPPORT
|
---|
| 830 | /*
|
---|
| 831 | * MPPE is required and unencrypted data has arrived (this
|
---|
| 832 | * should never happen!). We should probably drop the link if
|
---|
| 833 | * the protocol is in the range of what should be encrypted.
|
---|
| 834 | * At the least, we drop this packet.
|
---|
| 835 | */
|
---|
| 836 | if (pcb->settings.require_mppe && protocol != PPP_COMP && protocol < 0x8000) {
|
---|
| 837 | PPPDEBUG(LOG_ERR, ("ppp_input[%d]: MPPE required, received unencrypted data!\n", pcb->netif->num));
|
---|
| 838 | goto drop;
|
---|
| 839 | }
|
---|
| 840 | #endif /* MPPE_SUPPORT */
|
---|
| 841 |
|
---|
| 842 | if (protocol == PPP_COMP) {
|
---|
| 843 | u8_t *pl;
|
---|
| 844 |
|
---|
| 845 | switch (pcb->ccp_receive_method) {
|
---|
| 846 | #if MPPE_SUPPORT
|
---|
| 847 | case CI_MPPE:
|
---|
| 848 | if (mppe_decompress(pcb, &pcb->mppe_decomp, &pb) != ERR_OK) {
|
---|
| 849 | goto drop;
|
---|
| 850 | }
|
---|
| 851 | break;
|
---|
| 852 | #endif /* MPPE_SUPPORT */
|
---|
| 853 | default:
|
---|
| 854 | PPPDEBUG(LOG_ERR, ("ppp_input[%d]: bad CCP receive method\n", pcb->netif->num));
|
---|
| 855 | goto drop; /* Cannot really happen, we only negotiate what we are able to do */
|
---|
| 856 | }
|
---|
| 857 |
|
---|
| 858 | /* Assume no PFC */
|
---|
| 859 | if (pb->len < 2) {
|
---|
| 860 | goto drop;
|
---|
| 861 | }
|
---|
| 862 |
|
---|
| 863 | /* Extract and hide protocol (do PFC decompression if necessary) */
|
---|
| 864 | pl = (u8_t*)pb->payload;
|
---|
| 865 | if (pl[0] & 0x01) {
|
---|
| 866 | protocol = pl[0];
|
---|
| 867 | pbuf_remove_header(pb, 1);
|
---|
| 868 | } else {
|
---|
| 869 | protocol = (pl[0] << 8) | pl[1];
|
---|
| 870 | pbuf_remove_header(pb, 2);
|
---|
| 871 | }
|
---|
| 872 | }
|
---|
| 873 | #endif /* CCP_SUPPORT */
|
---|
| 874 |
|
---|
| 875 | switch(protocol) {
|
---|
| 876 |
|
---|
| 877 | #if PPP_IPV4_SUPPORT
|
---|
| 878 | case PPP_IP: /* Internet Protocol */
|
---|
| 879 | PPPDEBUG(LOG_INFO, ("ppp_input[%d]: ip in pbuf len=%d\n", pcb->netif->num, pb->tot_len));
|
---|
| 880 | ip4_input(pb, pcb->netif);
|
---|
| 881 | return;
|
---|
| 882 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 883 |
|
---|
| 884 | #if PPP_IPV6_SUPPORT
|
---|
| 885 | case PPP_IPV6: /* Internet Protocol Version 6 */
|
---|
| 886 | PPPDEBUG(LOG_INFO, ("ppp_input[%d]: ip6 in pbuf len=%d\n", pcb->netif->num, pb->tot_len));
|
---|
| 887 | ip6_input(pb, pcb->netif);
|
---|
| 888 | return;
|
---|
| 889 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 890 |
|
---|
| 891 | #if VJ_SUPPORT
|
---|
| 892 | case PPP_VJC_COMP: /* VJ compressed TCP */
|
---|
| 893 | /*
|
---|
| 894 | * Clip off the VJ header and prepend the rebuilt TCP/IP header and
|
---|
| 895 | * pass the result to IP.
|
---|
| 896 | */
|
---|
| 897 | PPPDEBUG(LOG_INFO, ("ppp_input[%d]: vj_comp in pbuf len=%d\n", pcb->netif->num, pb->tot_len));
|
---|
| 898 | if (pcb->vj_enabled && vj_uncompress_tcp(&pb, &pcb->vj_comp) >= 0) {
|
---|
| 899 | ip4_input(pb, pcb->netif);
|
---|
| 900 | return;
|
---|
| 901 | }
|
---|
| 902 | /* Something's wrong so drop it. */
|
---|
| 903 | PPPDEBUG(LOG_WARNING, ("ppp_input[%d]: Dropping VJ compressed\n", pcb->netif->num));
|
---|
| 904 | break;
|
---|
| 905 |
|
---|
| 906 | case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */
|
---|
| 907 | /*
|
---|
| 908 | * Process the TCP/IP header for VJ header compression and then pass
|
---|
| 909 | * the packet to IP.
|
---|
| 910 | */
|
---|
| 911 | PPPDEBUG(LOG_INFO, ("ppp_input[%d]: vj_un in pbuf len=%d\n", pcb->netif->num, pb->tot_len));
|
---|
| 912 | if (pcb->vj_enabled && vj_uncompress_uncomp(pb, &pcb->vj_comp) >= 0) {
|
---|
| 913 | ip4_input(pb, pcb->netif);
|
---|
| 914 | return;
|
---|
| 915 | }
|
---|
| 916 | /* Something's wrong so drop it. */
|
---|
| 917 | PPPDEBUG(LOG_WARNING, ("ppp_input[%d]: Dropping VJ uncompressed\n", pcb->netif->num));
|
---|
| 918 | break;
|
---|
| 919 | #endif /* VJ_SUPPORT */
|
---|
| 920 |
|
---|
| 921 | default: {
|
---|
| 922 | int i;
|
---|
| 923 | const struct protent *protp;
|
---|
| 924 |
|
---|
| 925 | /*
|
---|
| 926 | * Upcall the proper protocol input routine.
|
---|
| 927 | */
|
---|
| 928 | for (i = 0; (protp = protocols[i]) != NULL; ++i) {
|
---|
| 929 | if (protp->protocol == protocol) {
|
---|
| 930 | pb = pbuf_coalesce(pb, PBUF_RAW);
|
---|
| 931 | (*protp->input)(pcb, (u8_t*)pb->payload, pb->len);
|
---|
| 932 | goto out;
|
---|
| 933 | }
|
---|
| 934 | #if 0 /* UNUSED
|
---|
| 935 | *
|
---|
| 936 | * This is actually a (hacked?) way for the Linux kernel to pass a data
|
---|
| 937 | * packet to pppd. pppd in normal condition only do signaling
|
---|
| 938 | * (LCP, PAP, CHAP, IPCP, ...) and does not handle any data packet at all.
|
---|
| 939 | *
|
---|
| 940 | * We don't even need this interface, which is only there because of PPP
|
---|
| 941 | * interface limitation between Linux kernel and pppd. For MPPE, which uses
|
---|
| 942 | * CCP to negotiate although it is not really a (de)compressor, we added
|
---|
| 943 | * ccp_resetrequest() in CCP and MPPE input data flow is calling either
|
---|
| 944 | * ccp_resetrequest() or lcp_close() if the issue is, respectively, non-fatal
|
---|
| 945 | * or fatal, this is what ccp_datainput() really do.
|
---|
| 946 | */
|
---|
| 947 | if (protocol == (protp->protocol & ~0x8000)
|
---|
| 948 | && protp->datainput != NULL) {
|
---|
| 949 | (*protp->datainput)(pcb, pb->payload, pb->len);
|
---|
| 950 | goto out;
|
---|
| 951 | }
|
---|
| 952 | #endif /* UNUSED */
|
---|
| 953 | }
|
---|
| 954 |
|
---|
| 955 | #if PPP_DEBUG
|
---|
| 956 | #if PPP_PROTOCOLNAME
|
---|
| 957 | pname = protocol_name(protocol);
|
---|
| 958 | if (pname != NULL) {
|
---|
| 959 | ppp_warn("Unsupported protocol '%s' (0x%x) received", pname, protocol);
|
---|
| 960 | } else
|
---|
| 961 | #endif /* PPP_PROTOCOLNAME */
|
---|
| 962 | ppp_warn("Unsupported protocol 0x%x received", protocol);
|
---|
| 963 | #endif /* PPP_DEBUG */
|
---|
| 964 | if (pbuf_add_header(pb, sizeof(protocol))) {
|
---|
| 965 | PPPDEBUG(LOG_WARNING, ("ppp_input[%d]: Dropping (pbuf_add_header failed)\n", pcb->netif->num));
|
---|
| 966 | goto drop;
|
---|
| 967 | }
|
---|
| 968 | lcp_sprotrej(pcb, (u8_t*)pb->payload, pb->len);
|
---|
| 969 | }
|
---|
| 970 | break;
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 | drop:
|
---|
| 974 | LINK_STATS_INC(link.drop);
|
---|
| 975 | MIB2_STATS_NETIF_INC(pcb->netif, ifindiscards);
|
---|
| 976 |
|
---|
| 977 | out:
|
---|
| 978 | pbuf_free(pb);
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | /*
|
---|
| 982 | * Write a pbuf to a ppp link, only used from PPP functions
|
---|
| 983 | * to send PPP packets.
|
---|
| 984 | *
|
---|
| 985 | * IPv4 and IPv6 packets from lwIP are sent, respectively,
|
---|
| 986 | * with ppp_netif_output_ip4() and ppp_netif_output_ip6()
|
---|
| 987 | * functions (which are callbacks of the netif PPP interface).
|
---|
| 988 | */
|
---|
| 989 | err_t ppp_write(ppp_pcb *pcb, struct pbuf *p) {
|
---|
| 990 | #if PRINTPKT_SUPPORT
|
---|
| 991 | ppp_dump_packet(pcb, "sent", (unsigned char *)p->payload+2, p->len-2);
|
---|
| 992 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 993 | return pcb->link_cb->write(pcb, pcb->link_ctx_cb, p);
|
---|
| 994 | }
|
---|
| 995 |
|
---|
| 996 | void ppp_link_terminated(ppp_pcb *pcb) {
|
---|
| 997 | PPPDEBUG(LOG_DEBUG, ("ppp_link_terminated[%d]\n", pcb->netif->num));
|
---|
| 998 | pcb->link_cb->disconnect(pcb, pcb->link_ctx_cb);
|
---|
| 999 | PPPDEBUG(LOG_DEBUG, ("ppp_link_terminated[%d]: finished.\n", pcb->netif->num));
|
---|
| 1000 | }
|
---|
| 1001 |
|
---|
| 1002 |
|
---|
| 1003 | /************************************************************************
|
---|
| 1004 | * Functions called by various PPP subsystems to configure
|
---|
| 1005 | * the PPP interface or change the PPP phase.
|
---|
| 1006 | */
|
---|
| 1007 |
|
---|
| 1008 | /*
|
---|
| 1009 | * new_phase - signal the start of a new phase of pppd's operation.
|
---|
| 1010 | */
|
---|
| 1011 | void new_phase(ppp_pcb *pcb, int p) {
|
---|
| 1012 | pcb->phase = p;
|
---|
| 1013 | PPPDEBUG(LOG_DEBUG, ("ppp phase changed[%d]: phase=%d\n", pcb->netif->num, pcb->phase));
|
---|
| 1014 | #if PPP_NOTIFY_PHASE
|
---|
| 1015 | if (pcb->notify_phase_cb != NULL) {
|
---|
| 1016 | pcb->notify_phase_cb(pcb, p, pcb->ctx_cb);
|
---|
| 1017 | }
|
---|
| 1018 | #endif /* PPP_NOTIFY_PHASE */
|
---|
| 1019 | }
|
---|
| 1020 |
|
---|
| 1021 | /*
|
---|
| 1022 | * ppp_send_config - configure the transmit-side characteristics of
|
---|
| 1023 | * the ppp interface.
|
---|
| 1024 | */
|
---|
| 1025 | int ppp_send_config(ppp_pcb *pcb, int mtu, u32_t accm, int pcomp, int accomp) {
|
---|
| 1026 | LWIP_UNUSED_ARG(mtu);
|
---|
| 1027 | /* pcb->mtu = mtu; -- set correctly with netif_set_mtu */
|
---|
| 1028 |
|
---|
| 1029 | if (pcb->link_cb->send_config) {
|
---|
| 1030 | pcb->link_cb->send_config(pcb, pcb->link_ctx_cb, accm, pcomp, accomp);
|
---|
| 1031 | }
|
---|
| 1032 |
|
---|
| 1033 | PPPDEBUG(LOG_INFO, ("ppp_send_config[%d]\n", pcb->netif->num) );
|
---|
| 1034 | return 0;
|
---|
| 1035 | }
|
---|
| 1036 |
|
---|
| 1037 | /*
|
---|
| 1038 | * ppp_recv_config - configure the receive-side characteristics of
|
---|
| 1039 | * the ppp interface.
|
---|
| 1040 | */
|
---|
| 1041 | int ppp_recv_config(ppp_pcb *pcb, int mru, u32_t accm, int pcomp, int accomp) {
|
---|
| 1042 | LWIP_UNUSED_ARG(mru);
|
---|
| 1043 |
|
---|
| 1044 | if (pcb->link_cb->recv_config) {
|
---|
| 1045 | pcb->link_cb->recv_config(pcb, pcb->link_ctx_cb, accm, pcomp, accomp);
|
---|
| 1046 | }
|
---|
| 1047 |
|
---|
| 1048 | PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]\n", pcb->netif->num));
|
---|
| 1049 | return 0;
|
---|
| 1050 | }
|
---|
| 1051 |
|
---|
| 1052 | #if PPP_IPV4_SUPPORT
|
---|
| 1053 | /*
|
---|
| 1054 | * sifaddr - Config the interface IP addresses and netmask.
|
---|
| 1055 | */
|
---|
| 1056 | int sifaddr(ppp_pcb *pcb, u32_t our_adr, u32_t his_adr, u32_t netmask) {
|
---|
| 1057 | ip4_addr_t ip, nm, gw;
|
---|
| 1058 |
|
---|
| 1059 | ip4_addr_set_u32(&ip, our_adr);
|
---|
| 1060 | ip4_addr_set_u32(&nm, netmask);
|
---|
| 1061 | ip4_addr_set_u32(&gw, his_adr);
|
---|
| 1062 | netif_set_addr(pcb->netif, &ip, &nm, &gw);
|
---|
| 1063 | return 1;
|
---|
| 1064 | }
|
---|
| 1065 |
|
---|
| 1066 | /********************************************************************
|
---|
| 1067 | *
|
---|
| 1068 | * cifaddr - Clear the interface IP addresses, and delete routes
|
---|
| 1069 | * through the interface if possible.
|
---|
| 1070 | */
|
---|
| 1071 | int cifaddr(ppp_pcb *pcb, u32_t our_adr, u32_t his_adr) {
|
---|
| 1072 | LWIP_UNUSED_ARG(our_adr);
|
---|
| 1073 | LWIP_UNUSED_ARG(his_adr);
|
---|
| 1074 |
|
---|
| 1075 | netif_set_addr(pcb->netif, IP4_ADDR_ANY4, IP4_ADDR_BROADCAST, IP4_ADDR_ANY4);
|
---|
| 1076 | return 1;
|
---|
| 1077 | }
|
---|
| 1078 |
|
---|
| 1079 | #if 0 /* UNUSED - PROXY ARP */
|
---|
| 1080 | /********************************************************************
|
---|
| 1081 | *
|
---|
| 1082 | * sifproxyarp - Make a proxy ARP entry for the peer.
|
---|
| 1083 | */
|
---|
| 1084 |
|
---|
| 1085 | int sifproxyarp(ppp_pcb *pcb, u32_t his_adr) {
|
---|
| 1086 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1087 | LWIP_UNUSED_ARG(his_adr);
|
---|
| 1088 | return 0;
|
---|
| 1089 | }
|
---|
| 1090 |
|
---|
| 1091 | /********************************************************************
|
---|
| 1092 | *
|
---|
| 1093 | * cifproxyarp - Delete the proxy ARP entry for the peer.
|
---|
| 1094 | */
|
---|
| 1095 |
|
---|
| 1096 | int cifproxyarp(ppp_pcb *pcb, u32_t his_adr) {
|
---|
| 1097 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1098 | LWIP_UNUSED_ARG(his_adr);
|
---|
| 1099 | return 0;
|
---|
| 1100 | }
|
---|
| 1101 | #endif /* UNUSED - PROXY ARP */
|
---|
| 1102 |
|
---|
| 1103 | #if LWIP_DNS
|
---|
| 1104 | /*
|
---|
| 1105 | * sdns - Config the DNS servers
|
---|
| 1106 | */
|
---|
| 1107 | int sdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
|
---|
| 1108 | ip_addr_t ns;
|
---|
| 1109 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1110 |
|
---|
| 1111 | ip_addr_set_ip4_u32_val(ns, ns1);
|
---|
| 1112 | dns_setserver(0, &ns);
|
---|
| 1113 | ip_addr_set_ip4_u32_val(ns, ns2);
|
---|
| 1114 | dns_setserver(1, &ns);
|
---|
| 1115 | return 1;
|
---|
| 1116 | }
|
---|
| 1117 |
|
---|
| 1118 | /********************************************************************
|
---|
| 1119 | *
|
---|
| 1120 | * cdns - Clear the DNS servers
|
---|
| 1121 | */
|
---|
| 1122 | int cdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
|
---|
| 1123 | const ip_addr_t *nsa;
|
---|
| 1124 | ip_addr_t nsb;
|
---|
| 1125 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1126 |
|
---|
| 1127 | nsa = dns_getserver(0);
|
---|
| 1128 | ip_addr_set_ip4_u32_val(nsb, ns1);
|
---|
| 1129 | if (ip_addr_cmp(nsa, &nsb)) {
|
---|
| 1130 | dns_setserver(0, IP_ADDR_ANY);
|
---|
| 1131 | }
|
---|
| 1132 | nsa = dns_getserver(1);
|
---|
| 1133 | ip_addr_set_ip4_u32_val(nsb, ns2);
|
---|
| 1134 | if (ip_addr_cmp(nsa, &nsb)) {
|
---|
| 1135 | dns_setserver(1, IP_ADDR_ANY);
|
---|
| 1136 | }
|
---|
| 1137 | return 1;
|
---|
| 1138 | }
|
---|
| 1139 | #endif /* LWIP_DNS */
|
---|
| 1140 |
|
---|
| 1141 | #if VJ_SUPPORT
|
---|
| 1142 | /********************************************************************
|
---|
| 1143 | *
|
---|
| 1144 | * sifvjcomp - config tcp header compression
|
---|
| 1145 | */
|
---|
| 1146 | int sifvjcomp(ppp_pcb *pcb, int vjcomp, int cidcomp, int maxcid) {
|
---|
| 1147 | pcb->vj_enabled = vjcomp;
|
---|
| 1148 | pcb->vj_comp.compressSlot = cidcomp;
|
---|
| 1149 | pcb->vj_comp.maxSlotIndex = maxcid;
|
---|
| 1150 | PPPDEBUG(LOG_INFO, ("sifvjcomp[%d]: VJ compress enable=%d slot=%d max slot=%d\n",
|
---|
| 1151 | pcb->netif->num, vjcomp, cidcomp, maxcid));
|
---|
| 1152 | return 0;
|
---|
| 1153 | }
|
---|
| 1154 | #endif /* VJ_SUPPORT */
|
---|
| 1155 |
|
---|
| 1156 | /*
|
---|
| 1157 | * sifup - Config the interface up and enable IP packets to pass.
|
---|
| 1158 | */
|
---|
| 1159 | int sifup(ppp_pcb *pcb) {
|
---|
| 1160 | pcb->if4_up = 1;
|
---|
| 1161 | pcb->err_code = PPPERR_NONE;
|
---|
| 1162 | netif_set_link_up(pcb->netif);
|
---|
| 1163 |
|
---|
| 1164 | PPPDEBUG(LOG_DEBUG, ("sifup[%d]: err_code=%d\n", pcb->netif->num, pcb->err_code));
|
---|
| 1165 | pcb->link_status_cb(pcb, pcb->err_code, pcb->ctx_cb);
|
---|
| 1166 | return 1;
|
---|
| 1167 | }
|
---|
| 1168 |
|
---|
| 1169 | /********************************************************************
|
---|
| 1170 | *
|
---|
| 1171 | * sifdown - Disable the indicated protocol and config the interface
|
---|
| 1172 | * down if there are no remaining protocols.
|
---|
| 1173 | */
|
---|
| 1174 | int sifdown(ppp_pcb *pcb) {
|
---|
| 1175 |
|
---|
| 1176 | pcb->if4_up = 0;
|
---|
| 1177 |
|
---|
| 1178 | if (1
|
---|
| 1179 | #if PPP_IPV6_SUPPORT
|
---|
| 1180 | /* set the interface down if IPv6 is down as well */
|
---|
| 1181 | && !pcb->if6_up
|
---|
| 1182 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 1183 | ) {
|
---|
| 1184 | /* make sure the netif link callback is called */
|
---|
| 1185 | netif_set_link_down(pcb->netif);
|
---|
| 1186 | }
|
---|
| 1187 | PPPDEBUG(LOG_DEBUG, ("sifdown[%d]: err_code=%d\n", pcb->netif->num, pcb->err_code));
|
---|
| 1188 | return 1;
|
---|
| 1189 | }
|
---|
| 1190 |
|
---|
| 1191 | /********************************************************************
|
---|
| 1192 | *
|
---|
| 1193 | * Return user specified netmask, modified by any mask we might determine
|
---|
| 1194 | * for address `addr' (in network byte order).
|
---|
| 1195 | * Here we scan through the system's list of interfaces, looking for
|
---|
| 1196 | * any non-point-to-point interfaces which might appear to be on the same
|
---|
| 1197 | * network as `addr'. If we find any, we OR in their netmask to the
|
---|
| 1198 | * user-specified netmask.
|
---|
| 1199 | */
|
---|
| 1200 | u32_t get_mask(u32_t addr) {
|
---|
| 1201 | #if 0
|
---|
| 1202 | u32_t mask, nmask;
|
---|
| 1203 |
|
---|
| 1204 | addr = lwip_htonl(addr);
|
---|
| 1205 | if (IP_CLASSA(addr)) { /* determine network mask for address class */
|
---|
| 1206 | nmask = IP_CLASSA_NET;
|
---|
| 1207 | } else if (IP_CLASSB(addr)) {
|
---|
| 1208 | nmask = IP_CLASSB_NET;
|
---|
| 1209 | } else {
|
---|
| 1210 | nmask = IP_CLASSC_NET;
|
---|
| 1211 | }
|
---|
| 1212 |
|
---|
| 1213 | /* class D nets are disallowed by bad_ip_adrs */
|
---|
| 1214 | mask = PP_HTONL(0xffffff00UL) | lwip_htonl(nmask);
|
---|
| 1215 |
|
---|
| 1216 | /* XXX
|
---|
| 1217 | * Scan through the system's network interfaces.
|
---|
| 1218 | * Get each netmask and OR them into our mask.
|
---|
| 1219 | */
|
---|
| 1220 | /* return mask; */
|
---|
| 1221 | return mask;
|
---|
| 1222 | #endif /* 0 */
|
---|
| 1223 | LWIP_UNUSED_ARG(addr);
|
---|
| 1224 | return IPADDR_BROADCAST;
|
---|
| 1225 | }
|
---|
| 1226 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 1227 |
|
---|
| 1228 | #if PPP_IPV6_SUPPORT
|
---|
| 1229 | #define IN6_LLADDR_FROM_EUI64(ip6, eui64) do { \
|
---|
| 1230 | ip6.addr[0] = PP_HTONL(0xfe800000); \
|
---|
| 1231 | ip6.addr[1] = 0; \
|
---|
| 1232 | eui64_copy(eui64, ip6.addr[2]); \
|
---|
| 1233 | } while (0)
|
---|
| 1234 |
|
---|
| 1235 | /********************************************************************
|
---|
| 1236 | *
|
---|
| 1237 | * sif6addr - Config the interface with an IPv6 link-local address
|
---|
| 1238 | */
|
---|
| 1239 | int sif6addr(ppp_pcb *pcb, eui64_t our_eui64, eui64_t his_eui64) {
|
---|
| 1240 | ip6_addr_t ip6;
|
---|
| 1241 | LWIP_UNUSED_ARG(his_eui64);
|
---|
| 1242 |
|
---|
| 1243 | IN6_LLADDR_FROM_EUI64(ip6, our_eui64);
|
---|
| 1244 | netif_ip6_addr_set(pcb->netif, 0, &ip6);
|
---|
| 1245 | netif_ip6_addr_set_state(pcb->netif, 0, IP6_ADDR_PREFERRED);
|
---|
| 1246 | /* FIXME: should we add an IPv6 static neighbor using his_eui64 ? */
|
---|
| 1247 | return 1;
|
---|
| 1248 | }
|
---|
| 1249 |
|
---|
| 1250 | /********************************************************************
|
---|
| 1251 | *
|
---|
| 1252 | * cif6addr - Remove IPv6 address from interface
|
---|
| 1253 | */
|
---|
| 1254 | int cif6addr(ppp_pcb *pcb, eui64_t our_eui64, eui64_t his_eui64) {
|
---|
| 1255 | LWIP_UNUSED_ARG(our_eui64);
|
---|
| 1256 | LWIP_UNUSED_ARG(his_eui64);
|
---|
| 1257 |
|
---|
| 1258 | netif_ip6_addr_set_state(pcb->netif, 0, IP6_ADDR_INVALID);
|
---|
| 1259 | netif_ip6_addr_set(pcb->netif, 0, IP6_ADDR_ANY6);
|
---|
| 1260 | return 1;
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 | /*
|
---|
| 1264 | * sif6up - Config the interface up and enable IPv6 packets to pass.
|
---|
| 1265 | */
|
---|
| 1266 | int sif6up(ppp_pcb *pcb) {
|
---|
| 1267 |
|
---|
| 1268 | pcb->if6_up = 1;
|
---|
| 1269 | pcb->err_code = PPPERR_NONE;
|
---|
| 1270 | netif_set_link_up(pcb->netif);
|
---|
| 1271 |
|
---|
| 1272 | PPPDEBUG(LOG_DEBUG, ("sif6up[%d]: err_code=%d\n", pcb->netif->num, pcb->err_code));
|
---|
| 1273 | pcb->link_status_cb(pcb, pcb->err_code, pcb->ctx_cb);
|
---|
| 1274 | return 1;
|
---|
| 1275 | }
|
---|
| 1276 |
|
---|
| 1277 | /********************************************************************
|
---|
| 1278 | *
|
---|
| 1279 | * sif6down - Disable the indicated protocol and config the interface
|
---|
| 1280 | * down if there are no remaining protocols.
|
---|
| 1281 | */
|
---|
| 1282 | int sif6down(ppp_pcb *pcb) {
|
---|
| 1283 |
|
---|
| 1284 | pcb->if6_up = 0;
|
---|
| 1285 |
|
---|
| 1286 | if (1
|
---|
| 1287 | #if PPP_IPV4_SUPPORT
|
---|
| 1288 | /* set the interface down if IPv4 is down as well */
|
---|
| 1289 | && !pcb->if4_up
|
---|
| 1290 | #endif /* PPP_IPV4_SUPPORT */
|
---|
| 1291 | ) {
|
---|
| 1292 | /* make sure the netif link callback is called */
|
---|
| 1293 | netif_set_link_down(pcb->netif);
|
---|
| 1294 | }
|
---|
| 1295 | PPPDEBUG(LOG_DEBUG, ("sif6down[%d]: err_code=%d\n", pcb->netif->num, pcb->err_code));
|
---|
| 1296 | return 1;
|
---|
| 1297 | }
|
---|
| 1298 | #endif /* PPP_IPV6_SUPPORT */
|
---|
| 1299 |
|
---|
| 1300 | #if DEMAND_SUPPORT
|
---|
| 1301 | /*
|
---|
| 1302 | * sifnpmode - Set the mode for handling packets for a given NP.
|
---|
| 1303 | */
|
---|
| 1304 | int sifnpmode(ppp_pcb *pcb, int proto, enum NPmode mode) {
|
---|
| 1305 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1306 | LWIP_UNUSED_ARG(proto);
|
---|
| 1307 | LWIP_UNUSED_ARG(mode);
|
---|
| 1308 | return 0;
|
---|
| 1309 | }
|
---|
| 1310 | #endif /* DEMAND_SUPPORT */
|
---|
| 1311 |
|
---|
| 1312 | /*
|
---|
| 1313 | * netif_set_mtu - set the MTU on the PPP network interface.
|
---|
| 1314 | */
|
---|
| 1315 | void netif_set_mtu(ppp_pcb *pcb, int mtu) {
|
---|
| 1316 |
|
---|
| 1317 | pcb->netif->mtu = mtu;
|
---|
| 1318 | PPPDEBUG(LOG_INFO, ("netif_set_mtu[%d]: mtu=%d\n", pcb->netif->num, mtu));
|
---|
| 1319 | }
|
---|
| 1320 |
|
---|
| 1321 | /*
|
---|
| 1322 | * netif_get_mtu - get PPP interface MTU
|
---|
| 1323 | */
|
---|
| 1324 | int netif_get_mtu(ppp_pcb *pcb) {
|
---|
| 1325 |
|
---|
| 1326 | return pcb->netif->mtu;
|
---|
| 1327 | }
|
---|
| 1328 |
|
---|
| 1329 | #if CCP_SUPPORT
|
---|
| 1330 | #if 0 /* unused */
|
---|
| 1331 | /*
|
---|
| 1332 | * ccp_test - whether a given compression method is acceptable for use.
|
---|
| 1333 | */
|
---|
| 1334 | int
|
---|
| 1335 | ccp_test(ppp_pcb *pcb, u_char *opt_ptr, int opt_len, int for_transmit)
|
---|
| 1336 | {
|
---|
| 1337 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1338 | LWIP_UNUSED_ARG(opt_ptr);
|
---|
| 1339 | LWIP_UNUSED_ARG(opt_len);
|
---|
| 1340 | LWIP_UNUSED_ARG(for_transmit);
|
---|
| 1341 | return -1;
|
---|
| 1342 | }
|
---|
| 1343 | #endif /* unused */
|
---|
| 1344 |
|
---|
| 1345 | /*
|
---|
| 1346 | * ccp_set - inform about the current state of CCP.
|
---|
| 1347 | */
|
---|
| 1348 | void
|
---|
| 1349 | ccp_set(ppp_pcb *pcb, u8_t isopen, u8_t isup, u8_t receive_method, u8_t transmit_method)
|
---|
| 1350 | {
|
---|
| 1351 | LWIP_UNUSED_ARG(isopen);
|
---|
| 1352 | LWIP_UNUSED_ARG(isup);
|
---|
| 1353 | pcb->ccp_receive_method = receive_method;
|
---|
| 1354 | pcb->ccp_transmit_method = transmit_method;
|
---|
| 1355 | PPPDEBUG(LOG_DEBUG, ("ccp_set[%d]: is_open=%d, is_up=%d, receive_method=%u, transmit_method=%u\n",
|
---|
| 1356 | pcb->netif->num, isopen, isup, receive_method, transmit_method));
|
---|
| 1357 | }
|
---|
| 1358 |
|
---|
| 1359 | void
|
---|
| 1360 | ccp_reset_comp(ppp_pcb *pcb)
|
---|
| 1361 | {
|
---|
| 1362 | switch (pcb->ccp_transmit_method) {
|
---|
| 1363 | #if MPPE_SUPPORT
|
---|
| 1364 | case CI_MPPE:
|
---|
| 1365 | mppe_comp_reset(pcb, &pcb->mppe_comp);
|
---|
| 1366 | break;
|
---|
| 1367 | #endif /* MPPE_SUPPORT */
|
---|
| 1368 | default:
|
---|
| 1369 | break;
|
---|
| 1370 | }
|
---|
| 1371 | }
|
---|
| 1372 |
|
---|
| 1373 | void
|
---|
| 1374 | ccp_reset_decomp(ppp_pcb *pcb)
|
---|
| 1375 | {
|
---|
| 1376 | switch (pcb->ccp_receive_method) {
|
---|
| 1377 | #if MPPE_SUPPORT
|
---|
| 1378 | case CI_MPPE:
|
---|
| 1379 | mppe_decomp_reset(pcb, &pcb->mppe_decomp);
|
---|
| 1380 | break;
|
---|
| 1381 | #endif /* MPPE_SUPPORT */
|
---|
| 1382 | default:
|
---|
| 1383 | break;
|
---|
| 1384 | }
|
---|
| 1385 | }
|
---|
| 1386 |
|
---|
| 1387 | #if 0 /* unused */
|
---|
| 1388 | /*
|
---|
| 1389 | * ccp_fatal_error - returns 1 if decompression was disabled as a
|
---|
| 1390 | * result of an error detected after decompression of a packet,
|
---|
| 1391 | * 0 otherwise. This is necessary because of patent nonsense.
|
---|
| 1392 | */
|
---|
| 1393 | int
|
---|
| 1394 | ccp_fatal_error(ppp_pcb *pcb)
|
---|
| 1395 | {
|
---|
| 1396 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1397 | return 1;
|
---|
| 1398 | }
|
---|
| 1399 | #endif /* unused */
|
---|
| 1400 | #endif /* CCP_SUPPORT */
|
---|
| 1401 |
|
---|
| 1402 | #if PPP_IDLETIMELIMIT
|
---|
| 1403 | /********************************************************************
|
---|
| 1404 | *
|
---|
| 1405 | * get_idle_time - return how long the link has been idle.
|
---|
| 1406 | */
|
---|
| 1407 | int get_idle_time(ppp_pcb *pcb, struct ppp_idle *ip) {
|
---|
| 1408 | /* FIXME: add idle time support and make it optional */
|
---|
| 1409 | LWIP_UNUSED_ARG(pcb);
|
---|
| 1410 | LWIP_UNUSED_ARG(ip);
|
---|
| 1411 | return 1;
|
---|
| 1412 | }
|
---|
| 1413 | #endif /* PPP_IDLETIMELIMIT */
|
---|
| 1414 |
|
---|
| 1415 | #if DEMAND_SUPPORT
|
---|
| 1416 | /********************************************************************
|
---|
| 1417 | *
|
---|
| 1418 | * get_loop_output - get outgoing packets from the ppp device,
|
---|
| 1419 | * and detect when we want to bring the real link up.
|
---|
| 1420 | * Return value is 1 if we need to bring up the link, 0 otherwise.
|
---|
| 1421 | */
|
---|
| 1422 | int get_loop_output(void) {
|
---|
| 1423 | return 0;
|
---|
| 1424 | }
|
---|
| 1425 | #endif /* DEMAND_SUPPORT */
|
---|
| 1426 |
|
---|
| 1427 | #if PPP_PROTOCOLNAME
|
---|
| 1428 | /* List of protocol names, to make our messages a little more informative. */
|
---|
| 1429 | struct protocol_list {
|
---|
| 1430 | u_short proto;
|
---|
| 1431 | const char *name;
|
---|
| 1432 | } const protocol_list[] = {
|
---|
| 1433 | { 0x21, "IP" },
|
---|
| 1434 | { 0x23, "OSI Network Layer" },
|
---|
| 1435 | { 0x25, "Xerox NS IDP" },
|
---|
| 1436 | { 0x27, "DECnet Phase IV" },
|
---|
| 1437 | { 0x29, "Appletalk" },
|
---|
| 1438 | { 0x2b, "Novell IPX" },
|
---|
| 1439 | { 0x2d, "VJ compressed TCP/IP" },
|
---|
| 1440 | { 0x2f, "VJ uncompressed TCP/IP" },
|
---|
| 1441 | { 0x31, "Bridging PDU" },
|
---|
| 1442 | { 0x33, "Stream Protocol ST-II" },
|
---|
| 1443 | { 0x35, "Banyan Vines" },
|
---|
| 1444 | { 0x39, "AppleTalk EDDP" },
|
---|
| 1445 | { 0x3b, "AppleTalk SmartBuffered" },
|
---|
| 1446 | { 0x3d, "Multi-Link" },
|
---|
| 1447 | { 0x3f, "NETBIOS Framing" },
|
---|
| 1448 | { 0x41, "Cisco Systems" },
|
---|
| 1449 | { 0x43, "Ascom Timeplex" },
|
---|
| 1450 | { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" },
|
---|
| 1451 | { 0x47, "DCA Remote Lan" },
|
---|
| 1452 | { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" },
|
---|
| 1453 | { 0x4b, "SNA over 802.2" },
|
---|
| 1454 | { 0x4d, "SNA" },
|
---|
| 1455 | { 0x4f, "IP6 Header Compression" },
|
---|
| 1456 | { 0x51, "KNX Bridging Data" },
|
---|
| 1457 | { 0x53, "Encryption" },
|
---|
| 1458 | { 0x55, "Individual Link Encryption" },
|
---|
| 1459 | { 0x57, "IPv6" },
|
---|
| 1460 | { 0x59, "PPP Muxing" },
|
---|
| 1461 | { 0x5b, "Vendor-Specific Network Protocol" },
|
---|
| 1462 | { 0x61, "RTP IPHC Full Header" },
|
---|
| 1463 | { 0x63, "RTP IPHC Compressed TCP" },
|
---|
| 1464 | { 0x65, "RTP IPHC Compressed non-TCP" },
|
---|
| 1465 | { 0x67, "RTP IPHC Compressed UDP 8" },
|
---|
| 1466 | { 0x69, "RTP IPHC Compressed RTP 8" },
|
---|
| 1467 | { 0x6f, "Stampede Bridging" },
|
---|
| 1468 | { 0x73, "MP+" },
|
---|
| 1469 | { 0xc1, "NTCITS IPI" },
|
---|
| 1470 | { 0xfb, "single-link compression" },
|
---|
| 1471 | { 0xfd, "Compressed Datagram" },
|
---|
| 1472 | { 0x0201, "802.1d Hello Packets" },
|
---|
| 1473 | { 0x0203, "IBM Source Routing BPDU" },
|
---|
| 1474 | { 0x0205, "DEC LANBridge100 Spanning Tree" },
|
---|
| 1475 | { 0x0207, "Cisco Discovery Protocol" },
|
---|
| 1476 | { 0x0209, "Netcs Twin Routing" },
|
---|
| 1477 | { 0x020b, "STP - Scheduled Transfer Protocol" },
|
---|
| 1478 | { 0x020d, "EDP - Extreme Discovery Protocol" },
|
---|
| 1479 | { 0x0211, "Optical Supervisory Channel Protocol" },
|
---|
| 1480 | { 0x0213, "Optical Supervisory Channel Protocol" },
|
---|
| 1481 | { 0x0231, "Luxcom" },
|
---|
| 1482 | { 0x0233, "Sigma Network Systems" },
|
---|
| 1483 | { 0x0235, "Apple Client Server Protocol" },
|
---|
| 1484 | { 0x0281, "MPLS Unicast" },
|
---|
| 1485 | { 0x0283, "MPLS Multicast" },
|
---|
| 1486 | { 0x0285, "IEEE p1284.4 standard - data packets" },
|
---|
| 1487 | { 0x0287, "ETSI TETRA Network Protocol Type 1" },
|
---|
| 1488 | { 0x0289, "Multichannel Flow Treatment Protocol" },
|
---|
| 1489 | { 0x2063, "RTP IPHC Compressed TCP No Delta" },
|
---|
| 1490 | { 0x2065, "RTP IPHC Context State" },
|
---|
| 1491 | { 0x2067, "RTP IPHC Compressed UDP 16" },
|
---|
| 1492 | { 0x2069, "RTP IPHC Compressed RTP 16" },
|
---|
| 1493 | { 0x4001, "Cray Communications Control Protocol" },
|
---|
| 1494 | { 0x4003, "CDPD Mobile Network Registration Protocol" },
|
---|
| 1495 | { 0x4005, "Expand accelerator protocol" },
|
---|
| 1496 | { 0x4007, "ODSICP NCP" },
|
---|
| 1497 | { 0x4009, "DOCSIS DLL" },
|
---|
| 1498 | { 0x400B, "Cetacean Network Detection Protocol" },
|
---|
| 1499 | { 0x4021, "Stacker LZS" },
|
---|
| 1500 | { 0x4023, "RefTek Protocol" },
|
---|
| 1501 | { 0x4025, "Fibre Channel" },
|
---|
| 1502 | { 0x4027, "EMIT Protocols" },
|
---|
| 1503 | { 0x405b, "Vendor-Specific Protocol (VSP)" },
|
---|
| 1504 | { 0x8021, "Internet Protocol Control Protocol" },
|
---|
| 1505 | { 0x8023, "OSI Network Layer Control Protocol" },
|
---|
| 1506 | { 0x8025, "Xerox NS IDP Control Protocol" },
|
---|
| 1507 | { 0x8027, "DECnet Phase IV Control Protocol" },
|
---|
| 1508 | { 0x8029, "Appletalk Control Protocol" },
|
---|
| 1509 | { 0x802b, "Novell IPX Control Protocol" },
|
---|
| 1510 | { 0x8031, "Bridging NCP" },
|
---|
| 1511 | { 0x8033, "Stream Protocol Control Protocol" },
|
---|
| 1512 | { 0x8035, "Banyan Vines Control Protocol" },
|
---|
| 1513 | { 0x803d, "Multi-Link Control Protocol" },
|
---|
| 1514 | { 0x803f, "NETBIOS Framing Control Protocol" },
|
---|
| 1515 | { 0x8041, "Cisco Systems Control Protocol" },
|
---|
| 1516 | { 0x8043, "Ascom Timeplex" },
|
---|
| 1517 | { 0x8045, "Fujitsu LBLB Control Protocol" },
|
---|
| 1518 | { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" },
|
---|
| 1519 | { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" },
|
---|
| 1520 | { 0x804b, "SNA over 802.2 Control Protocol" },
|
---|
| 1521 | { 0x804d, "SNA Control Protocol" },
|
---|
| 1522 | { 0x804f, "IP6 Header Compression Control Protocol" },
|
---|
| 1523 | { 0x8051, "KNX Bridging Control Protocol" },
|
---|
| 1524 | { 0x8053, "Encryption Control Protocol" },
|
---|
| 1525 | { 0x8055, "Individual Link Encryption Control Protocol" },
|
---|
| 1526 | { 0x8057, "IPv6 Control Protocol" },
|
---|
| 1527 | { 0x8059, "PPP Muxing Control Protocol" },
|
---|
| 1528 | { 0x805b, "Vendor-Specific Network Control Protocol (VSNCP)" },
|
---|
| 1529 | { 0x806f, "Stampede Bridging Control Protocol" },
|
---|
| 1530 | { 0x8073, "MP+ Control Protocol" },
|
---|
| 1531 | { 0x80c1, "NTCITS IPI Control Protocol" },
|
---|
| 1532 | { 0x80fb, "Single Link Compression Control Protocol" },
|
---|
| 1533 | { 0x80fd, "Compression Control Protocol" },
|
---|
| 1534 | { 0x8207, "Cisco Discovery Protocol Control" },
|
---|
| 1535 | { 0x8209, "Netcs Twin Routing" },
|
---|
| 1536 | { 0x820b, "STP - Control Protocol" },
|
---|
| 1537 | { 0x820d, "EDPCP - Extreme Discovery Protocol Ctrl Prtcl" },
|
---|
| 1538 | { 0x8235, "Apple Client Server Protocol Control" },
|
---|
| 1539 | { 0x8281, "MPLSCP" },
|
---|
| 1540 | { 0x8285, "IEEE p1284.4 standard - Protocol Control" },
|
---|
| 1541 | { 0x8287, "ETSI TETRA TNP1 Control Protocol" },
|
---|
| 1542 | { 0x8289, "Multichannel Flow Treatment Protocol" },
|
---|
| 1543 | { 0xc021, "Link Control Protocol" },
|
---|
| 1544 | { 0xc023, "Password Authentication Protocol" },
|
---|
| 1545 | { 0xc025, "Link Quality Report" },
|
---|
| 1546 | { 0xc027, "Shiva Password Authentication Protocol" },
|
---|
| 1547 | { 0xc029, "CallBack Control Protocol (CBCP)" },
|
---|
| 1548 | { 0xc02b, "BACP Bandwidth Allocation Control Protocol" },
|
---|
| 1549 | { 0xc02d, "BAP" },
|
---|
| 1550 | { 0xc05b, "Vendor-Specific Authentication Protocol (VSAP)" },
|
---|
| 1551 | { 0xc081, "Container Control Protocol" },
|
---|
| 1552 | { 0xc223, "Challenge Handshake Authentication Protocol" },
|
---|
| 1553 | { 0xc225, "RSA Authentication Protocol" },
|
---|
| 1554 | { 0xc227, "Extensible Authentication Protocol" },
|
---|
| 1555 | { 0xc229, "Mitsubishi Security Info Exch Ptcl (SIEP)" },
|
---|
| 1556 | { 0xc26f, "Stampede Bridging Authorization Protocol" },
|
---|
| 1557 | { 0xc281, "Proprietary Authentication Protocol" },
|
---|
| 1558 | { 0xc283, "Proprietary Authentication Protocol" },
|
---|
| 1559 | { 0xc481, "Proprietary Node ID Authentication Protocol" },
|
---|
| 1560 | { 0, NULL },
|
---|
| 1561 | };
|
---|
| 1562 |
|
---|
| 1563 | /*
|
---|
| 1564 | * protocol_name - find a name for a PPP protocol.
|
---|
| 1565 | */
|
---|
| 1566 | const char * protocol_name(int proto) {
|
---|
| 1567 | const struct protocol_list *lp;
|
---|
| 1568 |
|
---|
| 1569 | for (lp = protocol_list; lp->proto != 0; ++lp) {
|
---|
| 1570 | if (proto == lp->proto) {
|
---|
| 1571 | return lp->name;
|
---|
| 1572 | }
|
---|
| 1573 | }
|
---|
| 1574 | return NULL;
|
---|
| 1575 | }
|
---|
| 1576 | #endif /* PPP_PROTOCOLNAME */
|
---|
| 1577 |
|
---|
| 1578 | #if PPP_STATS_SUPPORT
|
---|
| 1579 |
|
---|
| 1580 | /* ---- Note on PPP Stats support ----
|
---|
| 1581 | *
|
---|
| 1582 | * The one willing link stats support should add the get_ppp_stats()
|
---|
| 1583 | * to fetch statistics from lwIP.
|
---|
| 1584 | */
|
---|
| 1585 |
|
---|
| 1586 | /*
|
---|
| 1587 | * reset_link_stats - "reset" stats when link goes up.
|
---|
| 1588 | */
|
---|
| 1589 | void reset_link_stats(int u) {
|
---|
| 1590 | if (!get_ppp_stats(u, &old_link_stats)) {
|
---|
| 1591 | return;
|
---|
| 1592 | }
|
---|
| 1593 | gettimeofday(&start_time, NULL);
|
---|
| 1594 | }
|
---|
| 1595 |
|
---|
| 1596 | /*
|
---|
| 1597 | * update_link_stats - get stats at link termination.
|
---|
| 1598 | */
|
---|
| 1599 | void update_link_stats(int u) {
|
---|
| 1600 | struct timeval now;
|
---|
| 1601 | char numbuf[32];
|
---|
| 1602 |
|
---|
| 1603 | if (!get_ppp_stats(u, &link_stats) || gettimeofday(&now, NULL) < 0) {
|
---|
| 1604 | return;
|
---|
| 1605 | }
|
---|
| 1606 | link_connect_time = now.tv_sec - start_time.tv_sec;
|
---|
| 1607 | link_stats_valid = 1;
|
---|
| 1608 |
|
---|
| 1609 | link_stats.bytes_in -= old_link_stats.bytes_in;
|
---|
| 1610 | link_stats.bytes_out -= old_link_stats.bytes_out;
|
---|
| 1611 | link_stats.pkts_in -= old_link_stats.pkts_in;
|
---|
| 1612 | link_stats.pkts_out -= old_link_stats.pkts_out;
|
---|
| 1613 | }
|
---|
| 1614 |
|
---|
| 1615 | void print_link_stats() {
|
---|
| 1616 | /*
|
---|
| 1617 | * Print connect time and statistics.
|
---|
| 1618 | */
|
---|
| 1619 | if (link_stats_valid) {
|
---|
| 1620 | int t = (link_connect_time + 5) / 6; /* 1/10ths of minutes */
|
---|
| 1621 | info("Connect time %d.%d minutes.", t/10, t%10);
|
---|
| 1622 | info("Sent %u bytes, received %u bytes.", link_stats.bytes_out, link_stats.bytes_in);
|
---|
| 1623 | link_stats_valid = 0;
|
---|
| 1624 | }
|
---|
| 1625 | }
|
---|
| 1626 | #endif /* PPP_STATS_SUPPORT */
|
---|
| 1627 |
|
---|
| 1628 | #endif /* PPP_SUPPORT */
|
---|