diff options
Diffstat (limited to 'firmware/microblaze/lwip/lwip-1.3.1/src/netif/ppp/ppp.c')
| -rw-r--r-- | firmware/microblaze/lwip/lwip-1.3.1/src/netif/ppp/ppp.c | 1999 |
1 files changed, 0 insertions, 1999 deletions
diff --git a/firmware/microblaze/lwip/lwip-1.3.1/src/netif/ppp/ppp.c b/firmware/microblaze/lwip/lwip-1.3.1/src/netif/ppp/ppp.c deleted file mode 100644 index 8720c3368..000000000 --- a/firmware/microblaze/lwip/lwip-1.3.1/src/netif/ppp/ppp.c +++ /dev/null @@ -1,1999 +0,0 @@ -/***************************************************************************** -* ppp.c - Network Point to Point Protocol program file. -* -* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. -* portions Copyright (c) 1997 by Global Election Systems Inc. -* -* The authors hereby grant permission to use, copy, modify, distribute, -* and license this software and its documentation for any purpose, provided -* that existing copyright notices are retained in all copies and that this -* notice and the following disclaimer are included verbatim in any -* distributions. No written agreement, license, or royalty fee is required -* for any of the authorized uses. -* -* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR -* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES -* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. -* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT -* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF -* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -* -****************************************************************************** -* REVISION HISTORY -* -* 03-01-01 Marc Boucher <marc@mbsi.ca> -* Ported to lwIP. -* 97-11-05 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc. -* Original. -*****************************************************************************/ - -/* - * ppp_defs.h - PPP definitions. - * - * if_pppvar.h - private structures and declarations for PPP. - * - * Copyright (c) 1994 The Australian National University. - * All rights reserved. - * - * Permission to use, copy, modify, and distribute this software and its - * documentation is hereby granted, provided that the above copyright - * notice appears in all copies. This software is provided without any - * warranty, express or implied. The Australian National University - * makes no representations about the suitability of this software for - * any purpose. - * - * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY - * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF - * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - * - * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO - * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, - * OR MODIFICATIONS. - */ - -/* - * if_ppp.h - Point-to-Point Protocol definitions. - * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include "lwip/opt.h" - -#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ - -#include "lwip/ip.h" /* for ip_input() */ - -#include "ppp.h" -#include "pppdebug.h" - -#include "randm.h" -#include "fsm.h" -#if PAP_SUPPORT -#include "pap.h" -#endif /* PAP_SUPPORT */ -#if CHAP_SUPPORT -#include "chap.h" -#endif /* CHAP_SUPPORT */ -#include "ipcp.h" -#include "lcp.h" -#include "magic.h" -#include "auth.h" -#if VJ_SUPPORT -#include "vj.h" -#endif /* VJ_SUPPORT */ -#if PPPOE_SUPPORT -#include "netif/ppp_oe.h" -#endif /* PPPOE_SUPPORT */ - -#include <string.h> - -/*************************/ -/*** LOCAL DEFINITIONS ***/ -/*************************/ - -/* - * The basic PPP frame. - */ -#define PPP_ADDRESS(p) (((u_char *)(p))[0]) -#define PPP_CONTROL(p) (((u_char *)(p))[1]) -#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3]) - -/* PPP packet parser states. Current state indicates operation yet to be - * completed. */ -typedef enum { - PDIDLE = 0, /* Idle state - waiting. */ - PDSTART, /* Process start flag. */ - PDADDRESS, /* Process address field. */ - PDCONTROL, /* Process control field. */ - PDPROTOCOL1, /* Process protocol field 1. */ - PDPROTOCOL2, /* Process protocol field 2. */ - PDDATA /* Process data byte. */ -} PPPDevStates; - -#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & pppACCMMask[c & 0x07]) - -/************************/ -/*** LOCAL DATA TYPES ***/ -/************************/ -/* - * PPP interface control block. - */ -typedef struct PPPControl_s { - char openFlag; /* True when in use. */ -#if PPPOE_SUPPORT - struct netif *ethif; - struct pppoe_softc *pppoe_sc; -#endif /* PPPOE_SUPPORT */ - int if_up; /* True when the interface is up. */ - int errCode; /* Code indicating why interface is down. */ -#if PPPOS_SUPPORT - sio_fd_t fd; /* File device ID of port. */ - int kill_link; /* Shut the link down. */ - int sig_hup; /* Carrier lost. */ - struct pbuf *inHead, *inTail; /* The input packet. */ - PPPDevStates inState; /* The input process state. */ - char inEscaped; /* Escape next character. */ - u16_t inProtocol; /* The input protocol code. */ - u16_t inFCS; /* Input Frame Check Sequence value. */ -#endif /* PPPOS_SUPPORT */ - int mtu; /* Peer's mru */ - int pcomp; /* Does peer accept protocol compression? */ - int accomp; /* Does peer accept addr/ctl compression? */ - u_long lastXMit; /* Time of last transmission. */ - ext_accm inACCM; /* Async-Ctl-Char-Map for input. */ - ext_accm outACCM; /* Async-Ctl-Char-Map for output. */ -#if PPPOS_SUPPORT && VJ_SUPPORT - int vjEnabled; /* Flag indicating VJ compression enabled. */ - struct vjcompress vjComp; /* Van Jabobsen compression header. */ -#endif /* PPPOS_SUPPORT && VJ_SUPPORT */ - - struct netif netif; - - struct ppp_addrs addrs; - - void (*linkStatusCB)(void *ctx, int errCode, void *arg); - void *linkStatusCtx; - -} PPPControl; - - -/* - * Ioctl definitions. - */ - -struct npioctl { - int protocol; /* PPP procotol, e.g. PPP_IP */ - enum NPmode mode; -}; - - - -/***********************************/ -/*** LOCAL FUNCTION DECLARATIONS ***/ -/***********************************/ -#if PPPOS_SUPPORT -static void pppMain(void *pd); -static void pppDrop(PPPControl *pc); -static void pppInProc(int pd, u_char *s, int l); -#endif /* PPPOS_SUPPORT */ - - -/******************************/ -/*** PUBLIC DATA STRUCTURES ***/ -/******************************/ -u_long subnetMask; - -static PPPControl pppControl[NUM_PPP]; /* The PPP interface control blocks. */ - -/* - * PPP Data Link Layer "protocol" table. - * One entry per supported protocol. - * The last entry must be NULL. - */ -struct protent *ppp_protocols[] = { - &lcp_protent, -#if PAP_SUPPORT - &pap_protent, -#endif /* PAP_SUPPORT */ -#if CHAP_SUPPORT - &chap_protent, -#endif /* CHAP_SUPPORT */ -#if CBCP_SUPPORT - &cbcp_protent, -#endif /* CBCP_SUPPORT */ - &ipcp_protent, -#if CCP_SUPPORT - &ccp_protent, -#endif /* CCP_SUPPORT */ - NULL -}; - - -/* - * Buffers for outgoing packets. This must be accessed only from the appropriate - * PPP task so that it doesn't need to be protected to avoid collisions. - */ -u_char *outpacket_buf[NUM_PPP]; - - -/*****************************/ -/*** LOCAL DATA STRUCTURES ***/ -/*****************************/ - -#if PPPOS_SUPPORT -/* - * FCS lookup table as calculated by genfcstab. - */ -static const u_short fcstab[256] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - -/* PPP's Asynchronous-Control-Character-Map. The mask array is used - * to select the specific bit for a character. */ -static u_char pppACCMMask[] = { - 0x01, - 0x02, - 0x04, - 0x08, - 0x10, - 0x20, - 0x40, - 0x80 -}; - - -void -pppMainWakeup(int pd) -{ - PPPDEBUG((LOG_DEBUG, "pppMainWakeup: unit %d\n", pd)); - sio_read_abort(pppControl[pd].fd); -} -#endif /* PPPOS_SUPPORT */ - -void -pppLinkTerminated(int pd) -{ - PPPControl *pc = &pppControl[pd]; - - PPPDEBUG((LOG_DEBUG, "pppLinkTerminated: unit %d\n", pd)); - -#if PPPOE_SUPPORT - if(pc->ethif) { - pppoe_disconnect(pc->pppoe_sc); - } else -#endif /* PPPOE_SUPPORT */ - { -#if PPPOS_SUPPORT - pppMainWakeup(pd); -#endif /* PPPOS_SUPPORT */ - } -} - -void -pppLinkDown(int pd) -{ - PPPControl *pc = &pppControl[pd]; - - PPPDEBUG((LOG_DEBUG, "pppLinkDown: unit %d\n", pd)); - -#if PPPOE_SUPPORT - if(pc->ethif) { - pppoe_disconnect(pc->pppoe_sc); - } else -#endif /* PPPOE_SUPPORT */ - { -#if PPPOS_SUPPORT - pppMainWakeup(pd); -#endif /* PPPOS_SUPPORT */ - } -} - -/* these callbacks are necessary because lcp_* functions - must be called in the same context as pppInput(), - namely the tcpip_thread(), essentially because - they manipulate timeouts which are thread-private -*/ - -static void -pppStartCB(void *arg) -{ - int pd = (int)arg; - - PPPDEBUG((LOG_DEBUG, "pppStartCB: unit %d\n", pd)); - lcp_lowerup(pd); - lcp_open(pd); /* Start protocol */ -} - -static void -pppStopCB(void *arg) -{ - int pd = (int)arg; - - PPPDEBUG((LOG_DEBUG, "pppStopCB: unit %d\n", pd)); - lcp_close(pd, "User request"); -} - -static void -pppHupCB(void *arg) -{ - int pd = (int)arg; - - PPPDEBUG((LOG_DEBUG, "pppHupCB: unit %d\n", pd)); - lcp_lowerdown(pd); - link_terminated(pd); -} - -/***********************************/ -/*** PUBLIC FUNCTION DEFINITIONS ***/ -/***********************************/ -/* Initialize the PPP subsystem. */ - -struct ppp_settings ppp_settings; - -err_t -pppInit(void) -{ - struct protent *protp; - int i, j; - - memset(&ppp_settings, 0, sizeof(ppp_settings)); - ppp_settings.usepeerdns = 1; - pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL); - - magicInit(); - - for (i = 0; i < NUM_PPP; i++) { - pppControl[i].openFlag = 0; - - subnetMask = htonl(0xffffff00); - - outpacket_buf[i] = (u_char *)mem_malloc(PPP_MRU+PPP_HDRLEN); - if(!outpacket_buf[i]) { - return ERR_MEM; - } - - /* - * Initialize to the standard option set. - */ - for (j = 0; (protp = ppp_protocols[j]) != NULL; ++j) { - (*protp->init)(i); - } - } - -#if LINK_STATS - /** @todo already done in stats_init (in fact, zeroed at boot). So, remove it? */ - /* Clear the statistics. */ - memset(&lwip_stats.link, 0, sizeof(lwip_stats.link)); -#endif /* LINK_STATS */ - -#if PPPOE_SUPPORT - pppoe_init(); -#endif /* PPPOE_SUPPORT */ - - return ERR_OK; -} - -void -pppSetAuth(enum pppAuthType authType, const char *user, const char *passwd) -{ - switch(authType) { - case PPPAUTHTYPE_NONE: - default: -#ifdef LWIP_PPP_STRICT_PAP_REJECT - ppp_settings.refuse_pap = 1; -#else /* LWIP_PPP_STRICT_PAP_REJECT */ - /* some providers request pap and accept an empty login/pw */ - ppp_settings.refuse_pap = 0; -#endif /* LWIP_PPP_STRICT_PAP_REJECT */ - ppp_settings.refuse_chap = 1; - break; - - case PPPAUTHTYPE_ANY: - /* Warning: Using PPPAUTHTYPE_ANY might have security consequences. - * RFC 1994 says: - * - * In practice, within or associated with each PPP server, there is a - * database which associates "user" names with authentication - * information ("secrets"). It is not anticipated that a particular - * named user would be authenticated by multiple methods. This would - * make the user vulnerable to attacks which negotiate the least secure - * method from among a set (such as PAP rather than CHAP). If the same - * secret was used, PAP would reveal the secret to be used later with - * CHAP. - * - * Instead, for each user name there should be an indication of exactly - * one method used to authenticate that user name. If a user needs to - * make use of different authentication methods under different - * circumstances, then distinct user names SHOULD be employed, each of - * which identifies exactly one authentication method. - * - */ - ppp_settings.refuse_pap = 0; - ppp_settings.refuse_chap = 0; - break; - - case PPPAUTHTYPE_PAP: - ppp_settings.refuse_pap = 0; - ppp_settings.refuse_chap = 1; - break; - - case PPPAUTHTYPE_CHAP: - ppp_settings.refuse_pap = 1; - ppp_settings.refuse_chap = 0; - break; - } - - if(user) { - strncpy(ppp_settings.user, user, sizeof(ppp_settings.user)-1); - ppp_settings.user[sizeof(ppp_settings.user)-1] = '\0'; - } else { - ppp_settings.user[0] = '\0'; - } - - if(passwd) { - strncpy(ppp_settings.passwd, passwd, sizeof(ppp_settings.passwd)-1); - ppp_settings.passwd[sizeof(ppp_settings.passwd)-1] = '\0'; - } else { - ppp_settings.passwd[0] = '\0'; - } -} - -#if PPPOS_SUPPORT -/* Open a new PPP connection using the given I/O device. - * This initializes the PPP control block but does not - * attempt to negotiate the LCP session. If this port - * connects to a modem, the modem connection must be - * established before calling this. - * Return a new PPP connection descriptor on success or - * an error code (negative) on failure. */ -int -pppOverSerialOpen(sio_fd_t fd, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx) -{ - PPPControl *pc; - int pd; - - /* Find a free PPP session descriptor. Critical region? */ - for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++); - - if (pd >= NUM_PPP) { - pd = PPPERR_OPEN; - } else { - pppControl[pd].openFlag = !0; - } - - /* Launch a deamon thread. */ - if (pd >= 0) { - pppControl[pd].openFlag = 1; - - lcp_init(pd); - pc = &pppControl[pd]; - pc->fd = fd; -#if PPPOE_SUPPORT - pc->ethif= NULL; -#endif /* PPPOE_SUPPORT */ - pc->kill_link = 0; - pc->sig_hup = 0; - pc->if_up = 0; - pc->errCode = 0; - pc->inState = PDIDLE; - pc->inHead = NULL; - pc->inTail = NULL; - pc->inEscaped = 0; - pc->lastXMit = 0; - -#if VJ_SUPPORT - pc->vjEnabled = 0; - vj_compress_init(&pc->vjComp); -#endif /* VJ_SUPPORT */ - - /* - * Default the in and out accm so that escape and flag characters - * are always escaped. - */ - memset(pc->inACCM, 0, sizeof(ext_accm)); - pc->inACCM[15] = 0x60; - memset(pc->outACCM, 0, sizeof(ext_accm)); - pc->outACCM[15] = 0x60; - - pc->linkStatusCB = linkStatusCB; - pc->linkStatusCtx = linkStatusCtx; - - sys_thread_new(PPP_THREAD_NAME, pppMain, (void*)pd, PPP_THREAD_STACKSIZE, PPP_THREAD_PRIO); - if(!linkStatusCB) { - while(pd >= 0 && !pc->if_up) { - sys_msleep(500); - if (lcp_phase[pd] == PHASE_DEAD) { - pppClose(pd); - if (pc->errCode) { - pd = pc->errCode; - } else { - pd = PPPERR_CONNECT; - } - } - } - } - } - - return pd; -} -#endif /* PPPOS_SUPPORT */ - -#if PPPOE_SUPPORT -static void pppOverEthernetLinkStatusCB(int pd, int up); - -void -pppOverEthernetClose(int pd) -{ - PPPControl* pc = &pppControl[pd]; - - /* *TJL* There's no lcp_deinit */ - lcp_close(pd, NULL); - - pppoe_destroy(&pc->netif); -} - -int pppOverEthernetOpen(struct netif *ethif, const char *service_name, const char *concentrator_name, void (*linkStatusCB)(void *ctx, int errCode, void *arg), void *linkStatusCtx) -{ - PPPControl *pc; - int pd; - - LWIP_UNUSED_ARG(service_name); - LWIP_UNUSED_ARG(concentrator_name); - - /* Find a free PPP session descriptor. Critical region? */ - for (pd = 0; pd < NUM_PPP && pppControl[pd].openFlag != 0; pd++); - if (pd >= NUM_PPP) { - pd = PPPERR_OPEN; - } else { - pppControl[pd].openFlag = !0; - } - - /* Launch a deamon thread. */ - if (pd >= 0) { - - pppControl[pd].openFlag = 1; - - lcp_init(pd); - - lcp_wantoptions[pd].mru = PPPOE_MAXMTU; - lcp_wantoptions[pd].neg_asyncmap = 0; - lcp_wantoptions[pd].neg_pcompression = 0; - lcp_wantoptions[pd].neg_accompression = 0; - - lcp_allowoptions[pd].mru = PPPOE_MAXMTU; - lcp_allowoptions[pd].neg_asyncmap = 0; - lcp_allowoptions[pd].neg_pcompression = 0; - lcp_allowoptions[pd].neg_accompression = 0; - - pc = &pppControl[pd]; - pc->if_up = 0; - pc->errCode = 0; - pc->lastXMit = 0; -#if PPPOS_SUPPORT - pc->kill_link = 0; - pc->sig_hup = 0; - pc->inState = PDIDLE; - pc->inHead = NULL; - pc->inTail = NULL; - pc->inEscaped = 0; -#if VJ_SUPPORT - pc->vjEnabled = 0; -#endif /* VJ_SUPPORT */ -#endif /* PPPOS_SUPPORT */ - pc->ethif= ethif; - - memset(pc->inACCM, 0, sizeof(ext_accm)); - memset(pc->outACCM, 0, sizeof(ext_accm)); - - pc->linkStatusCB = linkStatusCB; - pc->linkStatusCtx = linkStatusCtx; - - if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) { - pc->openFlag = 0; - return PPPERR_OPEN; - } - - pppoe_connect(pc->pppoe_sc); - - if(!linkStatusCB) { - while(pd >= 0 && !pc->if_up) { - sys_msleep(500); - if (lcp_phase[pd] == PHASE_DEAD) { - pppClose(pd); - if (pc->errCode) { - pd = pc->errCode; - } else { - pd = PPPERR_CONNECT; - } - } - } - } - } - - return pd; -} -#endif /* PPPOE_SUPPORT */ - - -/* Close a PPP connection and release the descriptor. - * Any outstanding packets in the queues are dropped. - * Return 0 on success, an error code on failure. */ -int -pppClose(int pd) -{ - PPPControl *pc = &pppControl[pd]; - int st = 0; - - /* Disconnect */ -#if PPPOE_SUPPORT - if(pc->ethif) { - PPPDEBUG((LOG_DEBUG, "pppClose: unit %d kill_link -> pppStopCB\n", pd)); - pc->errCode = PPPERR_USER; - /* This will leave us at PHASE_DEAD. */ - tcpip_callback(pppStopCB, (void*)pd); - } else -#endif /* PPPOE_SUPPORT */ - { -#if PPPOS_SUPPORT - pc->kill_link = !0; - pppMainWakeup(pd); -#endif /* PPPOS_SUPPORT */ - } - - if(!pc->linkStatusCB) { - while(st >= 0 && lcp_phase[pd] != PHASE_DEAD) { - sys_msleep(500); - break; - } - } - - return st; -} - -/* This function is called when carrier is lost on the PPP channel. */ -void -pppSigHUP(int pd) -{ - PPPControl *pc = &pppControl[pd]; - -#if PPPOE_SUPPORT - if(pc->ethif) { - PPPDEBUG((LOG_DEBUG, "pppSigHUP: unit %d sig_hup -> pppHupCB\n", pd)); - tcpip_callback(pppHupCB, (void*)pd); - } else -#endif /* PPPOE_SUPPORT */ - { -#if PPPOS_SUPPORT - pc->sig_hup = 1; - pppMainWakeup(pd); -#endif /* PPPOS_SUPPORT */ - } -} - -#if PPPOS_SUPPORT -static void -nPut(PPPControl *pc, struct pbuf *nb) -{ - struct pbuf *b; - int c; - - for(b = nb; b != NULL; b = b->next) { - if((c = sio_write(pc->fd, b->payload, b->len)) != b->len) { - PPPDEBUG((LOG_WARNING, - "PPP nPut: incomplete sio_write(%d,, %u) = %d\n", pc->fd, b->len, c)); - LINK_STATS_INC(link.err); - pc->lastXMit = 0; /* prepend PPP_FLAG to next packet */ - break; - } - } - - pbuf_free(nb); - LINK_STATS_INC(link.xmit); -} - -/* - * pppAppend - append given character to end of given pbuf. If outACCM - * is not NULL and the character needs to be escaped, do so. - * If pbuf is full, append another. - * Return the current pbuf. - */ -static struct pbuf * -pppAppend(u_char c, struct pbuf *nb, ext_accm *outACCM) -{ - struct pbuf *tb = nb; - - /* Make sure there is room for the character and an escape code. - * Sure we don't quite fill the buffer if the character doesn't - * get escaped but is one character worth complicating this? */ - /* Note: We assume no packet header. */ - if (nb && (PBUF_POOL_BUFSIZE - nb->len) < 2) { - tb = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL); - if (tb) { - nb->next = tb; - } else { - LINK_STATS_INC(link.memerr); - } - nb = tb; - } - - if (nb) { - if (outACCM && ESCAPE_P(*outACCM, c)) { - *((u_char*)nb->payload + nb->len++) = PPP_ESCAPE; - *((u_char*)nb->payload + nb->len++) = c ^ PPP_TRANS; - } else { - *((u_char*)nb->payload + nb->len++) = c; - } - } - - return tb; -} -#endif /* PPPOS_SUPPORT */ - -#if PPPOE_SUPPORT -static err_t -pppifOutputOverEthernet(int pd, struct pbuf *p) -{ - PPPControl *pc = &pppControl[pd]; - struct pbuf *pb; - u_short protocol = PPP_IP; - int i=0; - - pb = pbuf_alloc(PBUF_LINK, pppoe_hdrlen + sizeof(protocol), PBUF_RAM); - if(!pb) { - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.proterr); - return ERR_MEM; - } - - pbuf_header(pb, -pppoe_hdrlen); - - pc->lastXMit = sys_jiffies(); - - if (!pc->pcomp || protocol > 0xFF) { - *((u_char*)pb->payload + i++) = (protocol >> 8) & 0xFF; - } - *((u_char*)pb->payload + i) = protocol & 0xFF; - - pbuf_chain(pb, p); - - if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) { - LINK_STATS_INC(link.err); - return PPPERR_DEVICE; - } - - LINK_STATS_INC(link.xmit); - return ERR_OK; -} -#endif /* PPPOE_SUPPORT */ - -/* Send a packet on the given connection. */ -static err_t -pppifOutput(struct netif *netif, struct pbuf *pb, struct ip_addr *ipaddr) -{ - int pd = (int)netif->state; - u_short protocol = PPP_IP; - PPPControl *pc = &pppControl[pd]; -#if PPPOS_SUPPORT - u_int fcsOut = PPP_INITFCS; - struct pbuf *headMB = NULL, *tailMB = NULL, *p; - u_char c; -#endif /* PPPOS_SUPPORT */ - - LWIP_UNUSED_ARG(ipaddr); - - /* Validate parameters. */ - /* We let any protocol value go through - it can't hurt us - * and the peer will just drop it if it's not accepting it. */ - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag || !pb) { - PPPDEBUG((LOG_WARNING, "pppifOutput[%d]: bad parms prot=%d pb=%p\n", - pd, protocol, pb)); - LINK_STATS_INC(link.opterr); - LINK_STATS_INC(link.drop); - return ERR_ARG; - } - - /* Check that the link is up. */ - if (lcp_phase[pd] == PHASE_DEAD) { - PPPDEBUG((LOG_ERR, "pppifOutput[%d]: link not up\n", pd)); - LINK_STATS_INC(link.rterr); - LINK_STATS_INC(link.drop); - return ERR_RTE; - } - -#if PPPOE_SUPPORT - if(pc->ethif) { - return pppifOutputOverEthernet(pd, pb); - } -#endif /* PPPOE_SUPPORT */ - -#if PPPOS_SUPPORT - /* Grab an output buffer. */ - headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL); - if (headMB == NULL) { - PPPDEBUG((LOG_WARNING, "pppifOutput[%d]: first alloc fail\n", pd)); - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.drop); - return ERR_MEM; - } - -#if VJ_SUPPORT - /* - * Attempt Van Jacobson header compression if VJ is configured and - * this is an IP packet. - */ - if (protocol == PPP_IP && pc->vjEnabled) { - switch (vj_compress_tcp(&pc->vjComp, pb)) { - case TYPE_IP: - /* No change... - protocol = PPP_IP_PROTOCOL; */ - break; - case TYPE_COMPRESSED_TCP: - protocol = PPP_VJC_COMP; - break; - case TYPE_UNCOMPRESSED_TCP: - protocol = PPP_VJC_UNCOMP; - break; - default: - PPPDEBUG((LOG_WARNING, "pppifOutput[%d]: bad IP packet\n", pd)); - LINK_STATS_INC(link.proterr); - LINK_STATS_INC(link.drop); - pbuf_free(headMB); - return ERR_VAL; - } - } -#endif /* VJ_SUPPORT */ - - tailMB = headMB; - - /* Build the PPP header. */ - if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) { - tailMB = pppAppend(PPP_FLAG, tailMB, NULL); - } - - pc->lastXMit = sys_jiffies(); - if (!pc->accomp) { - fcsOut = PPP_FCS(fcsOut, PPP_ALLSTATIONS); - tailMB = pppAppend(PPP_ALLSTATIONS, tailMB, &pc->outACCM); - fcsOut = PPP_FCS(fcsOut, PPP_UI); - tailMB = pppAppend(PPP_UI, tailMB, &pc->outACCM); - } - if (!pc->pcomp || protocol > 0xFF) { - c = (protocol >> 8) & 0xFF; - fcsOut = PPP_FCS(fcsOut, c); - tailMB = pppAppend(c, tailMB, &pc->outACCM); - } - c = protocol & 0xFF; - fcsOut = PPP_FCS(fcsOut, c); - tailMB = pppAppend(c, tailMB, &pc->outACCM); - - /* Load packet. */ - for(p = pb; p; p = p->next) { - int n; - u_char *sPtr; - - sPtr = (u_char*)p->payload; - n = p->len; - while (n-- > 0) { - c = *sPtr++; - - /* Update FCS before checking for special characters. */ - fcsOut = PPP_FCS(fcsOut, c); - - /* Copy to output buffer escaping special characters. */ - tailMB = pppAppend(c, tailMB, &pc->outACCM); - } - } - - /* Add FCS and trailing flag. */ - c = ~fcsOut & 0xFF; - tailMB = pppAppend(c, tailMB, &pc->outACCM); - c = (~fcsOut >> 8) & 0xFF; - tailMB = pppAppend(c, tailMB, &pc->outACCM); - tailMB = pppAppend(PPP_FLAG, tailMB, NULL); - - /* If we failed to complete the packet, throw it away. */ - if (!tailMB) { - PPPDEBUG((LOG_WARNING, - "pppifOutput[%d]: Alloc err - dropping proto=%d\n", - pd, protocol)); - pbuf_free(headMB); - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.drop); - return ERR_MEM; - } - - /* Send it. */ - PPPDEBUG((LOG_INFO, "pppifOutput[%d]: proto=0x%04X\n", pd, protocol)); - - nPut(pc, headMB); -#endif /* PPPOS_SUPPORT */ - - return ERR_OK; -} - -/* Get and set parameters for the given connection. - * Return 0 on success, an error code on failure. */ -int -pppIOCtl(int pd, int cmd, void *arg) -{ - PPPControl *pc = &pppControl[pd]; - int st = 0; - - if (pd < 0 || pd >= NUM_PPP) { - st = PPPERR_PARAM; - } else { - switch(cmd) { - case PPPCTLG_UPSTATUS: /* Get the PPP up status. */ - if (arg) { - *(int *)arg = (int)(pc->if_up); - } else { - st = PPPERR_PARAM; - } - break; - case PPPCTLS_ERRCODE: /* Set the PPP error code. */ - if (arg) { - pc->errCode = *(int *)arg; - } else { - st = PPPERR_PARAM; - } - break; - case PPPCTLG_ERRCODE: /* Get the PPP error code. */ - if (arg) { - *(int *)arg = (int)(pc->errCode); - } else { - st = PPPERR_PARAM; - } - break; -#if PPPOS_SUPPORT - case PPPCTLG_FD: - if (arg) { - *(sio_fd_t *)arg = pc->fd; - } else { - st = PPPERR_PARAM; - } - break; -#endif /* PPPOS_SUPPORT */ - default: - st = PPPERR_PARAM; - break; - } - } - - return st; -} - -/* - * Return the Maximum Transmission Unit for the given PPP connection. - */ -u_int -pppMTU(int pd) -{ - PPPControl *pc = &pppControl[pd]; - u_int st; - - /* Validate parameters. */ - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - } else { - st = pc->mtu; - } - - return st; -} - -#if PPPOE_SUPPORT -int -pppWriteOverEthernet(int pd, const u_char *s, int n) -{ - PPPControl *pc = &pppControl[pd]; - struct pbuf *pb; - - /* skip address & flags */ - s += 2; - n -= 2; - - pb = pbuf_alloc(PBUF_LINK, pppoe_hdrlen + n, PBUF_RAM); - if(!pb) { - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.proterr); - return PPPERR_ALLOC; - } - - pbuf_header(pb, -pppoe_hdrlen); - - pc->lastXMit = sys_jiffies(); - - MEMCPY(pb->payload, s, n); - - if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) { - LINK_STATS_INC(link.err); - return PPPERR_DEVICE; - } - - LINK_STATS_INC(link.xmit); - return PPPERR_NONE; -} -#endif /* PPPOE_SUPPORT */ - -/* - * Write n characters to a ppp link. - * RETURN: >= 0 Number of characters written - * -1 Failed to write to device - */ -int -pppWrite(int pd, const u_char *s, int n) -{ - PPPControl *pc = &pppControl[pd]; -#if PPPOS_SUPPORT - u_char c; - u_int fcsOut; - struct pbuf *headMB, *tailMB; -#endif /* PPPOS_SUPPORT */ - -#if PPPOE_SUPPORT - if(pc->ethif) { - return pppWriteOverEthernet(pd, s, n); - } -#endif /* PPPOE_SUPPORT */ - -#if PPPOS_SUPPORT - headMB = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL); - if (headMB == NULL) { - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.proterr); - return PPPERR_ALLOC; - } - - tailMB = headMB; - - /* If the link has been idle, we'll send a fresh flag character to - * flush any noise. */ - if ((sys_jiffies() - pc->lastXMit) >= PPP_MAXIDLEFLAG) { - tailMB = pppAppend(PPP_FLAG, tailMB, NULL); - } - pc->lastXMit = sys_jiffies(); - - fcsOut = PPP_INITFCS; - /* Load output buffer. */ - while (n-- > 0) { - c = *s++; - - /* Update FCS before checking for special characters. */ - fcsOut = PPP_FCS(fcsOut, c); - - /* Copy to output buffer escaping special characters. */ - tailMB = pppAppend(c, tailMB, &pc->outACCM); - } - - /* Add FCS and trailing flag. */ - c = ~fcsOut & 0xFF; - tailMB = pppAppend(c, tailMB, &pc->outACCM); - c = (~fcsOut >> 8) & 0xFF; - tailMB = pppAppend(c, tailMB, &pc->outACCM); - tailMB = pppAppend(PPP_FLAG, tailMB, NULL); - - /* If we failed to complete the packet, throw it away. - * Otherwise send it. */ - if (!tailMB) { - PPPDEBUG((LOG_WARNING, - "pppWrite[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len)); - /*"pppWrite[%d]: Alloc err - dropping %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */ - pbuf_free(headMB); - LINK_STATS_INC(link.memerr); - LINK_STATS_INC(link.proterr); - return PPPERR_ALLOC; - } - - PPPDEBUG((LOG_INFO, "pppWrite[%d]: len=%d\n", pd, headMB->len)); - /* "pppWrite[%d]: %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */ - nPut(pc, headMB); -#endif /* PPPOS_SUPPORT */ - - return PPPERR_NONE; -} - -/* - * ppp_send_config - configure the transmit characteristics of - * the ppp interface. - */ -void -ppp_send_config( int unit, int mtu, u32_t asyncmap, int pcomp, int accomp) -{ - PPPControl *pc = &pppControl[unit]; - int i; - - pc->mtu = mtu; - pc->pcomp = pcomp; - pc->accomp = accomp; - - /* Load the ACCM bits for the 32 control codes. */ - for (i = 0; i < 32/8; i++) { - pc->outACCM[i] = (u_char)((asyncmap >> (8 * i)) & 0xFF); - } - PPPDEBUG((LOG_INFO, "ppp_send_config[%d]: outACCM=%X %X %X %X\n", - unit, - pc->outACCM[0], pc->outACCM[1], pc->outACCM[2], pc->outACCM[3])); -} - - -/* - * ppp_set_xaccm - set the extended transmit ACCM for the interface. - */ -void -ppp_set_xaccm(int unit, ext_accm *accm) -{ - SMEMCPY(pppControl[unit].outACCM, accm, sizeof(ext_accm)); - PPPDEBUG((LOG_INFO, "ppp_set_xaccm[%d]: outACCM=%X %X %X %X\n", - unit, - pppControl[unit].outACCM[0], - pppControl[unit].outACCM[1], - pppControl[unit].outACCM[2], - pppControl[unit].outACCM[3])); -} - - -/* - * ppp_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ -void -ppp_recv_config( int unit, int mru, u32_t asyncmap, int pcomp, int accomp) -{ - PPPControl *pc = &pppControl[unit]; - int i; - - LWIP_UNUSED_ARG(accomp); - LWIP_UNUSED_ARG(pcomp); - LWIP_UNUSED_ARG(mru); - - /* Load the ACCM bits for the 32 control codes. */ - for (i = 0; i < 32 / 8; i++) { - pc->inACCM[i] = (u_char)(asyncmap >> (i * 8)); - } - PPPDEBUG((LOG_INFO, "ppp_recv_config[%d]: inACCM=%X %X %X %X\n", - unit, - pc->inACCM[0], pc->inACCM[1], pc->inACCM[2], pc->inACCM[3])); -} - -#if 0 -/* - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. Returns 1 if the method and parameters - * are OK, 0 if the method is known but the parameters are not OK - * (e.g. code size should be reduced), or -1 if the method is unknown. - */ -int -ccp_test( int unit, int opt_len, int for_transmit, u_char *opt_ptr) -{ - return 0; /* XXX Currently no compression. */ -} - -/* - * ccp_flags_set - inform kernel about the current state of CCP. - */ -void -ccp_flags_set(int unit, int isopen, int isup) -{ - /* XXX */ -} - -/* - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ -int -ccp_fatal_error(int unit) -{ - /* XXX */ - return 0; -} -#endif - -/* - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time(int u, struct ppp_idle *ip) -{ - /* XXX */ - LWIP_UNUSED_ARG(u); - LWIP_UNUSED_ARG(ip); - - return 0; -} - - -/* - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ -u32_t -GetMask(u32_t addr) -{ - u32_t mask, nmask; - - htonl(addr); - if (IN_CLASSA(addr)) { /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - } else if (IN_CLASSB(addr)) { - nmask = IN_CLASSB_NET; - } else { - nmask = IN_CLASSC_NET; - } - - /* class D nets are disallowed by bad_ip_adrs */ - mask = subnetMask | htonl(nmask); - - /* XXX - * Scan through the system's network interfaces. - * Get each netmask and OR them into our mask. - */ - - return mask; -} - -/* - * sifvjcomp - config tcp header compression - */ -int -sifvjcomp( int pd, int vjcomp, int cidcomp, int maxcid) -{ -#if PPPOS_SUPPORT && VJ_SUPPORT - PPPControl *pc = &pppControl[pd]; - - pc->vjEnabled = vjcomp; - pc->vjComp.compressSlot = cidcomp; - pc->vjComp.maxSlotIndex = maxcid; - PPPDEBUG((LOG_INFO, "sifvjcomp: VJ compress enable=%d slot=%d max slot=%d\n", - vjcomp, cidcomp, maxcid)); -#endif /* PPPOS_SUPPORT && VJ_SUPPORT */ - - return 0; -} - -/* - * pppifNetifInit - netif init callback - */ -static err_t -pppifNetifInit(struct netif *netif) -{ - netif->name[0] = 'p'; - netif->name[1] = 'p'; - netif->output = pppifOutput; - netif->mtu = pppMTU((int)netif->state); - return ERR_OK; -} - - -/* - * sifup - Config the interface up and enable IP packets to pass. - */ -int -sifup(int pd) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifup[%d]: bad parms\n", pd)); - } else { - netif_remove(&pc->netif); - if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask, &pc->addrs.his_ipaddr, (void *)pd, pppifNetifInit, ip_input)) { - netif_set_up(&pc->netif); - pc->if_up = 1; - pc->errCode = PPPERR_NONE; - - PPPDEBUG((LOG_DEBUG, "sifup: unit %d: linkStatusCB=%lx errCode=%d\n", pd, pc->linkStatusCB, pc->errCode)); - if(pc->linkStatusCB) { - pc->linkStatusCB(pc->linkStatusCtx, pc->errCode, &pc->addrs); - } - } else { - st = 0; - PPPDEBUG((LOG_ERR, "sifup[%d]: netif_add failed\n", pd)); - } - } - - return st; -} - -/* - * sifnpmode - Set the mode for handling packets for a given NP. - */ -int -sifnpmode(int u, int proto, enum NPmode mode) -{ - LWIP_UNUSED_ARG(u); - LWIP_UNUSED_ARG(proto); - LWIP_UNUSED_ARG(mode); - return 0; -} - -/* - * sifdown - Config the interface down and disable IP. - */ -int -sifdown(int pd) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifdown[%d]: bad parms\n", pd)); - } else { - pc->if_up = 0; - netif_remove(&pc->netif); - PPPDEBUG((LOG_DEBUG, "sifdown: unit %d: linkStatusCB=%lx errCode=%d\n", pd, pc->linkStatusCB, pc->errCode)); - if(pc->linkStatusCB) { - pc->linkStatusCB(pc->linkStatusCtx, PPPERR_CONNECT, NULL); - } - } - return st; -} - -/** - * sifaddr - Config the interface IP addresses and netmask. - * @param pd Interface unit ??? - * @param o Our IP address ??? - * @param h His IP address ??? - * @param m IP subnet mask ??? - * @param ns1 Primary DNS - * @param ns2 Secondary DNS - */ -int -sifaddr( int pd, u32_t o, u32_t h, u32_t m, u32_t ns1, u32_t ns2) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifup[%d]: bad parms\n", pd)); - } else { - SMEMCPY(&pc->addrs.our_ipaddr, &o, sizeof(o)); - SMEMCPY(&pc->addrs.his_ipaddr, &h, sizeof(h)); - SMEMCPY(&pc->addrs.netmask, &m, sizeof(m)); - SMEMCPY(&pc->addrs.dns1, &ns1, sizeof(ns1)); - SMEMCPY(&pc->addrs.dns2, &ns2, sizeof(ns2)); - } - return st; -} - -/** - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - * @param pd Interface unit ??? - * @param o Our IP address ??? - * @param h IP broadcast address ??? - */ -int -cifaddr( int pd, u32_t o, u32_t h) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - LWIP_UNUSED_ARG(o); - LWIP_UNUSED_ARG(h); - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifup[%d]: bad parms\n", pd)); - } else { - IP4_ADDR(&pc->addrs.our_ipaddr, 0,0,0,0); - IP4_ADDR(&pc->addrs.his_ipaddr, 0,0,0,0); - IP4_ADDR(&pc->addrs.netmask, 255,255,255,0); - IP4_ADDR(&pc->addrs.dns1, 0,0,0,0); - IP4_ADDR(&pc->addrs.dns2, 0,0,0,0); - } - return st; -} - -/* - * sifdefaultroute - assign a default route through the address given. - */ -int -sifdefaultroute(int pd, u32_t l, u32_t g) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - LWIP_UNUSED_ARG(l); - LWIP_UNUSED_ARG(g); - - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifup[%d]: bad parms\n", pd)); - } else { - netif_set_default(&pc->netif); - } - - /* TODO: check how PPP handled the netMask, previously not set by ipSetDefault */ - - return st; -} - -/* - * cifdefaultroute - delete a default route through the address given. - */ -int -cifdefaultroute(int pd, u32_t l, u32_t g) -{ - PPPControl *pc = &pppControl[pd]; - int st = 1; - - LWIP_UNUSED_ARG(l); - LWIP_UNUSED_ARG(g); - - if (pd < 0 || pd >= NUM_PPP || !pc->openFlag) { - st = 0; - PPPDEBUG((LOG_WARNING, "sifup[%d]: bad parms\n", pd)); - } else { - netif_set_default(NULL); - } - - return st; -} - -/**********************************/ -/*** LOCAL FUNCTION DEFINITIONS ***/ -/**********************************/ - -#if PPPOS_SUPPORT -/* The main PPP process function. This implements the state machine according - * to section 4 of RFC 1661: The Point-To-Point Protocol. */ -static void -pppMain(void *arg) -{ - int pd = (int)arg; - struct pbuf *p; - PPPControl* pc; - int c; - - pc = &pppControl[pd]; - - p = pbuf_alloc(PBUF_RAW, PPP_MRU+PPP_HDRLEN, PBUF_RAM); - if (!p) { - LWIP_ASSERT("p != NULL", p); - pc->errCode = PPPERR_ALLOC; - goto out; - } - - /* - * Start the connection and handle incoming events (packet or timeout). - */ - PPPDEBUG((LOG_INFO, "pppMain: unit %d: Connecting\n", pd)); - tcpip_callback(pppStartCB, arg); - while (lcp_phase[pd] != PHASE_DEAD) { - if (pc->kill_link) { - PPPDEBUG((LOG_DEBUG, "pppMain: unit %d kill_link -> pppStopCB\n", pd)); - pc->errCode = PPPERR_USER; - /* This will leave us at PHASE_DEAD. */ - tcpip_callback(pppStopCB, arg); - pc->kill_link = 0; - } else if (pc->sig_hup) { - PPPDEBUG((LOG_DEBUG, "pppMain: unit %d sig_hup -> pppHupCB\n", pd)); - pc->sig_hup = 0; - tcpip_callback(pppHupCB, arg); - } else { - c = sio_read(pc->fd, p->payload, p->len); - if(c > 0) { - pppInProc(pd, p->payload, c); - } else { - PPPDEBUG((LOG_DEBUG, "pppMain: unit %d sio_read len=%d returned %d\n", pd, p->len, c)); - sys_msleep(1); /* give other tasks a chance to run */ - } - } - } - PPPDEBUG((LOG_INFO, "pppMain: unit %d: PHASE_DEAD\n", pd)); - pppDrop(pc); /* bug fix #17726 */ - pbuf_free(p); - -out: - PPPDEBUG((LOG_DEBUG, "pppMain: unit %d: linkStatusCB=%lx errCode=%d\n", pd, pc->linkStatusCB, pc->errCode)); - if(pc->linkStatusCB) { - pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL); - } - - pc->openFlag = 0; -} -#endif /* PPPOS_SUPPORT */ - -#if PPPOE_SUPPORT - -void -pppOverEthernetInitFailed(void* arg) -{ - PPPControl* pc; - int pd = (int)arg; - - pppHupCB(arg); - pppStopCB(arg); - - pc = &pppControl[pd]; - pppoe_destroy(&pc->netif); - pc->openFlag = 0; - - if(pc->linkStatusCB) { - pc->linkStatusCB(pc->linkStatusCtx, pc->errCode ? pc->errCode : PPPERR_PROTOCOL, NULL); - } -} - -static void -pppOverEthernetLinkStatusCB(int pd, int up) -{ - if(up) { - PPPDEBUG((LOG_INFO, "pppMain: unit %d: Connecting\n", pd)); - tcpip_callback(pppStartCB, (void*)pd); - } else { - PPPControl* pc; - pc = &pppControl[pd]; - tcpip_callback(pppOverEthernetInitFailed, (void*)pd); - } -} -#endif /* PPPOE_SUPPORT */ - -struct pbuf * -pppSingleBuf(struct pbuf *p) -{ - struct pbuf *q, *b; - u_char *pl; - - if(p->tot_len == p->len) { - return p; - } - - q = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM); - if(!q) { - PPPDEBUG((LOG_ERR, - "pppSingleBuf: unable to alloc new buf (%d)\n", p->tot_len)); - return p; /* live dangerously */ - } - - for(b = p, pl = q->payload; b != NULL; b = b->next) { - MEMCPY(pl, b->payload, b->len); - pl += b->len; - } - - pbuf_free(p); - - return q; -} - -struct pppInputHeader { - int unit; - u16_t proto; -}; - -/* - * Pass the processed input packet to the appropriate handler. - * This function and all handlers run in the context of the tcpip_thread - */ -static void -pppInput(void *arg) -{ - struct pbuf *nb = (struct pbuf *)arg; - u16_t protocol; - int pd; - - pd = ((struct pppInputHeader *)nb->payload)->unit; - protocol = ((struct pppInputHeader *)nb->payload)->proto; - - if(pbuf_header(nb, -(int)sizeof(struct pppInputHeader))) { - LWIP_ASSERT("pbuf_header failed\n", 0); - goto drop; - } - - LINK_STATS_INC(link.recv); - - /* - * Toss all non-LCP packets unless LCP is OPEN. - * Until we get past the authentication phase, toss all packets - * except LCP, LQR and authentication packets. - */ - if((lcp_phase[pd] <= PHASE_AUTHENTICATE) && (protocol != PPP_LCP)) { - if(!((protocol == PPP_LQR) || (protocol == PPP_PAP) || (protocol == PPP_CHAP)) || - (lcp_phase[pd] != PHASE_AUTHENTICATE)) { - PPPDEBUG((LOG_INFO, "pppInput: discarding proto 0x%04X in phase %d\n", protocol, lcp_phase[pd])); - goto drop; - } - } - - switch(protocol) { - case PPP_VJC_COMP: /* VJ compressed TCP */ -#if VJ_SUPPORT - PPPDEBUG((LOG_INFO, "pppInput[%d]: vj_comp in pbuf len=%d\n", pd, nb->len)); - /* - * Clip off the VJ header and prepend the rebuilt TCP/IP header and - * pass the result to IP. - */ - if ((vj_uncompress_tcp(&nb, &pppControl[pd].vjComp) >= 0) && (pppControl[pd].netif.input)) { - pppControl[pd].netif.input(nb, &pppControl[pd].netif); - return; - } - /* Something's wrong so drop it. */ - PPPDEBUG((LOG_WARNING, "pppInput[%d]: Dropping VJ compressed\n", pd)); -#else /* VJ_SUPPORT */ - /* No handler for this protocol so drop the packet. */ - PPPDEBUG((LOG_INFO, "pppInput[%d]: drop VJ Comp in %d:%s\n", pd, nb->len, nb->payload)); -#endif /* VJ_SUPPORT */ - break; - - case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */ -#if VJ_SUPPORT - PPPDEBUG((LOG_INFO, "pppInput[%d]: vj_un in pbuf len=%d\n", pd, nb->len)); - /* - * Process the TCP/IP header for VJ header compression and then pass - * the packet to IP. - */ - if ((vj_uncompress_uncomp(nb, &pppControl[pd].vjComp) >= 0) && pppControl[pd].netif.input) { - pppControl[pd].netif.input(nb, &pppControl[pd].netif); - return; - } - /* Something's wrong so drop it. */ - PPPDEBUG((LOG_WARNING, "pppInput[%d]: Dropping VJ uncompressed\n", pd)); -#else /* VJ_SUPPORT */ - /* No handler for this protocol so drop the packet. */ - PPPDEBUG((LOG_INFO, - "pppInput[%d]: drop VJ UnComp in %d:.*H\n", - pd, nb->len, LWIP_MIN(nb->len * 2, 40), nb->payload)); -#endif /* VJ_SUPPORT */ - break; - - case PPP_IP: /* Internet Protocol */ - PPPDEBUG((LOG_INFO, "pppInput[%d]: ip in pbuf len=%d\n", pd, nb->len)); - if (pppControl[pd].netif.input) { - pppControl[pd].netif.input(nb, &pppControl[pd].netif); - return; - } - break; - - default: { - struct protent *protp; - int i; - - /* - * Upcall the proper protocol input routine. - */ - for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) { - if (protp->protocol == protocol && protp->enabled_flag) { - PPPDEBUG((LOG_INFO, "pppInput[%d]: %s len=%d\n", pd, protp->name, nb->len)); - nb = pppSingleBuf(nb); - (*protp->input)(pd, nb->payload, nb->len); - goto out; - } - } - - /* No handler for this protocol so reject the packet. */ - PPPDEBUG((LOG_INFO, "pppInput[%d]: rejecting unsupported proto 0x%04X len=%d\n", pd, protocol, nb->len)); - if (pbuf_header(nb, sizeof(protocol))) { - LWIP_ASSERT("pbuf_header failed\n", 0); - goto drop; - } -#if BYTE_ORDER == LITTLE_ENDIAN - protocol = htons(protocol); - SMEMCPY(nb->payload, &protocol, sizeof(protocol)); -#endif /* BYTE_ORDER == LITTLE_ENDIAN */ - lcp_sprotrej(pd, nb->payload, nb->len); - } - break; - } - -drop: - LINK_STATS_INC(link.drop); - -out: - pbuf_free(nb); - return; -} - -#if PPPOS_SUPPORT -/* - * Drop the input packet. - */ -static void -pppDrop(PPPControl *pc) -{ - if (pc->inHead != NULL) { -#if 0 - PPPDEBUG((LOG_INFO, "pppDrop: %d:%.*H\n", pc->inHead->len, min(60, pc->inHead->len * 2), pc->inHead->payload)); -#endif - PPPDEBUG((LOG_INFO, "pppDrop: pbuf len=%d\n", pc->inHead->len)); - if (pc->inTail && (pc->inTail != pc->inHead)) { - pbuf_free(pc->inTail); - } - pbuf_free(pc->inHead); - pc->inHead = NULL; - pc->inTail = NULL; - } -#if VJ_SUPPORT - vj_uncompress_err(&pc->vjComp); -#endif /* VJ_SUPPORT */ - - LINK_STATS_INC(link.drop); -} - -/** - * Process a received octet string. - */ -static void -pppInProc(int pd, u_char *s, int l) -{ - PPPControl *pc = &pppControl[pd]; - struct pbuf *nextNBuf; - u_char curChar; - - PPPDEBUG((LOG_DEBUG, "pppInProc[%d]: got %d bytes\n", pd, l)); - while (l-- > 0) { - curChar = *s++; - - /* Handle special characters. */ - if (ESCAPE_P(pc->inACCM, curChar)) { - /* Check for escape sequences. */ - /* XXX Note that this does not handle an escaped 0x5d character which - * would appear as an escape character. Since this is an ASCII ']' - * and there is no reason that I know of to escape it, I won't complicate - * the code to handle this case. GLL */ - if (curChar == PPP_ESCAPE) { - pc->inEscaped = 1; - /* Check for the flag character. */ - } else if (curChar == PPP_FLAG) { - /* If this is just an extra flag character, ignore it. */ - if (pc->inState <= PDADDRESS) { - /* ignore it */; - /* If we haven't received the packet header, drop what has come in. */ - } else if (pc->inState < PDDATA) { - PPPDEBUG((LOG_WARNING, - "pppInProc[%d]: Dropping incomplete packet %d\n", - pd, pc->inState)); - LINK_STATS_INC(link.lenerr); - pppDrop(pc); - /* If the fcs is invalid, drop the packet. */ - } else if (pc->inFCS != PPP_GOODFCS) { - PPPDEBUG((LOG_INFO, - "pppInProc[%d]: Dropping bad fcs 0x%04X proto=0x%04X\n", - pd, pc->inFCS, pc->inProtocol)); - LINK_STATS_INC(link.chkerr); - pppDrop(pc); - /* Otherwise it's a good packet so pass it on. */ - } else { - /* Trim off the checksum. */ - if(pc->inTail->len >= 2) { - pc->inTail->len -= 2; - - pc->inTail->tot_len = pc->inTail->len; - if (pc->inTail != pc->inHead) { - pbuf_cat(pc->inHead, pc->inTail); - } - } else { - pc->inTail->tot_len = pc->inTail->len; - if (pc->inTail != pc->inHead) { - pbuf_cat(pc->inHead, pc->inTail); - } - - pbuf_realloc(pc->inHead, pc->inHead->tot_len - 2); - } - - /* Dispatch the packet thereby consuming it. */ - if(tcpip_callback(pppInput, pc->inHead) != ERR_OK) { - PPPDEBUG((LOG_ERR, "pppInProc[%d]: tcpip_callback() failed, dropping packet\n", pd)); - pbuf_free(pc->inHead); - LINK_STATS_INC(link.drop); - } - pc->inHead = NULL; - pc->inTail = NULL; - } - - /* Prepare for a new packet. */ - pc->inFCS = PPP_INITFCS; - pc->inState = PDADDRESS; - pc->inEscaped = 0; - /* Other characters are usually control characters that may have - * been inserted by the physical layer so here we just drop them. */ - } else { - PPPDEBUG((LOG_WARNING, - "pppInProc[%d]: Dropping ACCM char <%d>\n", pd, curChar)); - } - /* Process other characters. */ - } else { - /* Unencode escaped characters. */ - if (pc->inEscaped) { - pc->inEscaped = 0; - curChar ^= PPP_TRANS; - } - - /* Process character relative to current state. */ - switch(pc->inState) { - case PDIDLE: /* Idle state - waiting. */ - /* Drop the character if it's not 0xff - * we would have processed a flag character above. */ - if (curChar != PPP_ALLSTATIONS) { - break; - } - - /* Fall through */ - case PDSTART: /* Process start flag. */ - /* Prepare for a new packet. */ - pc->inFCS = PPP_INITFCS; - - /* Fall through */ - case PDADDRESS: /* Process address field. */ - if (curChar == PPP_ALLSTATIONS) { - pc->inState = PDCONTROL; - break; - } - /* Else assume compressed address and control fields so - * fall through to get the protocol... */ - case PDCONTROL: /* Process control field. */ - /* If we don't get a valid control code, restart. */ - if (curChar == PPP_UI) { - pc->inState = PDPROTOCOL1; - break; - } -#if 0 - else { - PPPDEBUG((LOG_WARNING, - "pppInProc[%d]: Invalid control <%d>\n", pd, curChar)); - pc->inState = PDSTART; - } -#endif - case PDPROTOCOL1: /* Process protocol field 1. */ - /* If the lower bit is set, this is the end of the protocol - * field. */ - if (curChar & 1) { - pc->inProtocol = curChar; - pc->inState = PDDATA; - } else { - pc->inProtocol = (u_int)curChar << 8; - pc->inState = PDPROTOCOL2; - } - break; - case PDPROTOCOL2: /* Process protocol field 2. */ - pc->inProtocol |= curChar; - pc->inState = PDDATA; - break; - case PDDATA: /* Process data byte. */ - /* Make space to receive processed data. */ - if (pc->inTail == NULL || pc->inTail->len == PBUF_POOL_BUFSIZE) { - if(pc->inTail) { - pc->inTail->tot_len = pc->inTail->len; - if (pc->inTail != pc->inHead) { - pbuf_cat(pc->inHead, pc->inTail); - } - } - /* If we haven't started a packet, we need a packet header. */ - nextNBuf = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL); - if (nextNBuf == NULL) { - /* No free buffers. Drop the input packet and let the - * higher layers deal with it. Continue processing - * the received pbuf chain in case a new packet starts. */ - PPPDEBUG((LOG_ERR, "pppInProc[%d]: NO FREE MBUFS!\n", pd)); - LINK_STATS_INC(link.memerr); - pppDrop(pc); - pc->inState = PDSTART; /* Wait for flag sequence. */ - break; - } - if (pc->inHead == NULL) { - struct pppInputHeader *pih = nextNBuf->payload; - - pih->unit = pd; - pih->proto = pc->inProtocol; - - nextNBuf->len += sizeof(*pih); - - pc->inHead = nextNBuf; - } - pc->inTail = nextNBuf; - } - /* Load character into buffer. */ - ((u_char*)pc->inTail->payload)[pc->inTail->len++] = curChar; - break; - } - - /* update the frame check sequence number. */ - pc->inFCS = PPP_FCS(pc->inFCS, curChar); - } - } - - avRandomize(); -} -#endif /* PPPOS_SUPPORT */ - -#if PPPOE_SUPPORT -void -pppInProcOverEthernet(int pd, struct pbuf *pb) -{ - struct pppInputHeader *pih; - u16_t inProtocol; - - if(pb->len < sizeof(inProtocol)) { - PPPDEBUG((LOG_ERR, "pppInProcOverEthernet: too small for protocol field\n")); - goto drop; - } - - inProtocol = (((u8_t *)pb->payload)[0] << 8) | ((u8_t*)pb->payload)[1]; - - /* make room for pppInputHeader - should not fail */ - if (pbuf_header(pb, sizeof(*pih) - sizeof(inProtocol)) != 0) { - PPPDEBUG((LOG_ERR, "pppInProcOverEthernet: could not allocate room for header\n")); - goto drop; - } - - pih = pb->payload; - - pih->unit = pd; - pih->proto = inProtocol; - - /* Dispatch the packet thereby consuming it. */ - if(tcpip_callback(pppInput, pb) != ERR_OK) { - PPPDEBUG((LOG_ERR, "pppInProcOverEthernet[%d]: tcpip_callback() failed, dropping packet\n", pd)); - goto drop; - } - - return; - -drop: - LINK_STATS_INC(link.drop); - pbuf_free(pb); - return; -} -#endif /* PPPOE_SUPPORT */ - -#endif /* PPP_SUPPORT */ |