/* * ppp.c * * Created on: May 12, 2012 * Author: gradator */ #include "lwip/opt.h" #include "lwip/pbuf.h" #include "lwip/stats.h" #include "lwip/sys.h" #include "lwip/tcpip.h" #include "lwip/api.h" #include "lwip/snmp.h" #include "ppp.h" #include "fsm.h" #include "lcp.h" #include "ipcp.h" #include "magic.h" #if PAP_SUPPORT #include "upap.h" #endif /* PAP_SUPPORT */ #if CHAP_SUPPORT #include "chap-new.h" #endif /* CHAP_SUPPORT */ #if EAP_SUPPORT #include "eap.h" #endif /* EAP_SUPPORT */ #if CCP_SUPPORT #include "ccp.h" #endif /* EAP_SUPPORT */ #if ECP_SUPPORT #include "ecp.h" #endif /* EAP_SUPPORT */ #if PPPOE_SUPPORT #include "netif/ppp_oe.h" #endif /* PPPOE_SUPPORT */ /* * Global variables. */ /* FIXME: global variables per PPP session */ /* FIXME: clean global variables */ int phase; /* where the link is at */ int error_count; /* # of times error() has been called */ int unsuccess; /* # unsuccessful connection attempts */ int listen_time; /* time to listen first (ms) */ int status; /* exit status for pppd */ int need_holdoff; /* need holdoff period before restarting */ /* FIXME: remove ifunit */ int ifunit; /* Interface unit number */ /* FIXME: outpacket_buf per PPP session */ u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */ #if PPPOS_SUPPORT u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */ #endif /* PPPOS_SUPPORT */ /* FIXME: add stats per PPP session */ #if PPP_STATS_SUPPORT static struct timeval start_time; /* Time when link was started. */ static struct pppd_stats old_link_stats; struct pppd_stats link_stats; unsigned link_connect_time; int link_stats_valid; #endif /* PPP_STATS_SUPPORT */ /* * PPP Data Link Layer "protocol" table. * One entry per supported protocol. * The last entry must be NULL. */ struct protent *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 &ipcp_protent, #ifdef INET6 &ipv6cp_protent, #endif #if CCP_SUPPORT &ccp_protent, #endif /* CCP_SUPPORT */ #if ECP_SUPPORT &ecp_protent, #endif /* ECP_SUPPORT */ #ifdef AT_CHANGE &atcp_protent, #endif #if EAP_SUPPORT &eap_protent, #endif /* EAP_SUPPORT */ NULL }; /* 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; typedef struct PPPControlRx_s { /** unit number / ppp descriptor */ int pd; /** the rx file descriptor */ #if PPPOS_SUPPORT /* FIXME: enable sio_fd_t back */ sio_fd_t fd; #endif #if PPPOE_SUPPORT int fd; #endif /** receive buffer - encoded data is stored here */ #if PPP_INPROC_OWNTHREAD u_char rxbuf[PPPOS_RX_BUFSIZE]; #endif /* PPP_INPROC_OWNTHREAD */ /* The input packet. */ struct pbuf *inHead, *inTail; #if PPPOS_SUPPORT u16_t inProtocol; /* The input protocol code. */ u16_t inFCS; /* Input Frame Check Sequence value. */ #endif /* PPPOS_SUPPORT */ PPPDevStates inState; /* The input process state. */ char inEscaped; /* Escape next character. */ ext_accm inACCM; /* Async-Ctl-Char-Map for input. */ } PPPControlRx; /* * PPP interface control block. */ typedef struct PPPControl_s { PPPControlRx rx; 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. */ #endif /* PPPOS_SUPPORT */ u16_t 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 outACCM; /* Async-Ctl-Char-Map for output. */ #if PPPOS_SUPPORT && VJ_SUPPORT int vjEnabled; /* Flag indicating VJ compression enabled. */ struct vjcompress vjComp; /* Van Jacobson 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; /* Prototypes for procedures local to this file. */ static void pppStart(int pd); /** Initiate LCP open request */ static void ppp_input(void *arg); #if PPPOE_SUPPORT static void pppOverEthernetLinkStatusCB(int pd, int up); static err_t pppifOutputOverEthernet(int pd, struct pbuf *p); #endif /* PPPOE_SUPPORT */ static err_t ppp_low_level_output(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr); static err_t ppp_netif_init_cb(struct netif *netif); /******************************/ /*** PUBLIC DATA STRUCTURES ***/ /******************************/ static PPPControl pppControl[NUM_PPP]; /* The PPP interface control blocks. */ /** Input helper struct, must be packed since it is stored to pbuf->payload, * which might be unaligned. */ #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/bpstruct.h" #endif PACK_STRUCT_BEGIN struct pppInputHeader { PACK_STRUCT_FIELD(int unit); PACK_STRUCT_FIELD(u16_t proto); } PACK_STRUCT_STRUCT; PACK_STRUCT_END #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/epstruct.h" #endif /** Initiate LCP open request */ static void pppStart(int pd) { PPPDEBUG(LOG_DEBUG, ("pppStart: unit %d\n", pd)); lcp_open(pd); /* Start protocol */ lcp_lowerup(pd); PPPDEBUG(LOG_DEBUG, ("pppStart: finished\n")); } /* * Pass the processed input packet to the appropriate handler. * This function and all handlers run in the context of the tcpip_thread */ /* FIXME: maybe we should pass in two arguments pppInputHeader and payload * this is totally stupid to make room for it and then modify the packet directly * or it is used in output ? have to find out... */ static void ppp_input(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); snmp_inc_ifinucastpkts(&pppControl[pd].netif); snmp_add_ifinoctets(&pppControl[pd].netif, nb->tot_len); /* * Toss all non-LCP packets unless LCP is OPEN. */ if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) { dbglog("Discarded non-LCP packet when LCP not open"); return; } /* FIXME: add a phase per connection */ /* * Until we get past the authentication phase, toss all packets * except LCP, LQR and authentication packets. */ if (phase <= PHASE_AUTHENTICATE && !(protocol == PPP_LCP || protocol == PPP_LQR #if PAP_SUPPORT || protocol == PPP_PAP #endif /* PAP_SUPPORT */ #if CHAP_SUPPORT || protocol == PPP_CHAP #endif /* CHAP_SUPPORT */ #if EAP_SUPPORT || protocol == PPP_EAP #endif /* EAP_SUPPORT */ )) { dbglog("discarding proto 0x%x in phase %d", protocol, phase); return; } /* FIXME: should we write protent to do that ? */ switch(protocol) { case PPP_VJC_COMP: /* VJ compressed TCP */ #if PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && VJ_SUPPORT */ /* No handler for this protocol so drop the packet. */ PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ Comp in %d\n", pd, nb->len)); #endif /* PPPOS_SUPPORT && VJ_SUPPORT */ break; case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */ #if PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && VJ_SUPPORT */ /* No handler for this protocol so drop the packet. */ PPPDEBUG(LOG_INFO, ("pppInput[%d]: drop VJ UnComp in %d\n", pd, nb->len)); #endif /* PPPOS_SUPPORT && 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: { int i; struct protent *protp; /* * Upcall the proper protocol input routine. */ for (i = 0; (protp = protocols[i]) != NULL; ++i) { if (protp->protocol == protocol && protp->enabled_flag) { nb = pppSingleBuf(nb); (*protp->input)(pd, nb->payload, nb->len); goto out; } #if 0 /* UNUSED * * This is actually a (hacked?) way for the PPP kernel implementation to pass a * data packet to the PPP daemon. The PPP daemon normally only do signaling * (LCP, PAP, CHAP, IPCP, ...) and does not handle any data packet at all. * * This is only used by CCP, which we cannot support until we have a CCP data * implementation. */ if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag && protp->datainput != NULL) { (*protp->datainput)(pd, nb->payload, nb->len); goto out; } #endif /* UNUSED */ } if (debug) { #if PPP_PROTOCOLNAME const char *pname = protocol_name(protocol); if (pname != NULL) warn("Unsupported protocol '%s' (0x%x) received", pname, protocol); else #endif /* PPP_PROTOCOLNAME */ warn("Unsupported protocol 0x%x received", protocol); } if (pbuf_header(nb, sizeof(protocol))) { LWIP_ASSERT("pbuf_header failed\n", 0); goto drop; } lcp_sprotrej(pd, nb->payload, nb->len); } break; } drop: LINK_STATS_INC(link.drop); snmp_inc_ifindiscards(&pppControl[pd].netif); out: pbuf_free(nb); return; #if 0 /* * 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%"X16_F" in phase %d\n", protocol, lcp_phase[pd])); goto drop; } } switch(protocol) { case PPP_VJC_COMP: /* VJ compressed TCP */ #if PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && VJ_SUPPORT */ break; case PPP_VJC_UNCOMP: /* VJ uncompressed TCP */ #if PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && 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 /* PPPOS_SUPPORT && 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); PPPDEBUG(LOG_DETAIL, ("pppInput[%d]: packet processed\n", pd)); goto out; } } /* No handler for this protocol so reject the packet. */ PPPDEBUG(LOG_INFO, ("pppInput[%d]: rejecting unsupported proto 0x%"X16_F" 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); #endif /* BYTE_ORDER == LITTLE_ENDIAN */ SMEMCPY(nb->payload, &protocol, sizeof(protocol)); lcp_sprotrej(pd, nb->payload, nb->len); } break; } #endif } /***********************************/ /*** PUBLIC FUNCTION DEFINITIONS ***/ /***********************************/ /* Initialize the PPP subsystem. */ int ppp_init(void) { int i; struct protent *protp; debug = 1; ifunit = 1; /* FIXME: remove ifunit */ /* openlog("LWIP-PPP", LOG_PID | LOG_NDELAY, LOG_DAEMON); setlogmask(LOG_UPTO(LOG_DEBUG)); syslog(LOG_DEBUG, "hello, this is gradator lwIP PPP!"); */ memset(&ppp_settings, 0, sizeof(ppp_settings)); ppp_settings.usepeerdns = 1; pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL); /* * Initialize magic number generator now so that protocols may * use magic numbers in initialization. */ magic_init(); /* * Initialize each protocol. */ for (i = 0; (protp = protocols[i]) != NULL; ++i) (*protp->init)(0); return 0; } void pppSetAuth(enum pppAuthType authType, const char *user, const char *passwd) { /* FIXME: the following may look stupid, but this is just an easy way * to check different auth by changing compile time option */ #if PAP_SUPPORT ppp_settings.refuse_pap = 0; #endif /* PAP_SUPPORT */ #if CHAP_SUPPORT #if PAP_SUPPORT ppp_settings.refuse_pap = 1; #endif /* PAP_SUPPORT */ ppp_settings.refuse_chap = 0; #endif /* CHAP_SUPPORT */ #if MSCHAP_SUPPORT #if PAP_SUPPORT ppp_settings.refuse_pap = 1; #endif /* PAP_SUPPORT */ ppp_settings.refuse_chap = 1; ppp_settings.refuse_mschap = 1; ppp_settings.refuse_mschap_v2 = 0; #endif /* MSCHAP_SUPPORT */ #if EAP_SUPPORT #if PAP_SUPPORT ppp_settings.refuse_pap = 1; #endif/* PAP_SUPPORT */ #if CHAP_SUPPORT ppp_settings.refuse_chap = 1; #if MSCHAP_SUPPORT ppp_settings.refuse_mschap = 1; ppp_settings.refuse_mschap_v2 = 1; #endif /* MSCHAP_SUPPORT */ #endif /* CHAP_SUPPORT */ ppp_settings.refuse_eap = 0; #endif /* EAP_SUPPORT */ /* FIXME: re-enable that */ #if 0 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; } #endif 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 PPPOE_SUPPORT static void pppOverEthernetLinkStatusCB(int pd, int up); int pppOverEthernetOpen(struct netif *ethif, const char *service_name, const char *concentrator_name, pppLinkStatusCB_fn linkStatusCB, void *linkStatusCtx) { PPPControl *pc; int pd; LWIP_UNUSED_ARG(service_name); LWIP_UNUSED_ARG(concentrator_name); if (linkStatusCB == NULL) { /* PPP is single-threaded: without a callback, * there is no way to know when the link is up. */ return PPPERR_PARAM; } /* 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 { pc = &pppControl[pd]; memset(pc, 0, sizeof(PPPControl)); pc->openFlag = 1; pc->ethif = ethif; pc->linkStatusCB = linkStatusCB; pc->linkStatusCtx = linkStatusCtx; 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; if(pppoe_create(ethif, pd, pppOverEthernetLinkStatusCB, &pc->pppoe_sc) != ERR_OK) { pc->openFlag = 0; return PPPERR_OPEN; } pppoe_connect(pc->pppoe_sc); } return pd; } 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; } /* FIXME: maybe we should pass in two arguments pppInputHeader and payload * this is totally stupid to make room for it and then modify the packet directly * or it is used in output ? have to find out... */ 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. */ ppp_input(pb); return; drop: LINK_STATS_INC(link.drop); snmp_inc_ifindiscards(&pppControl[pd].netif); pbuf_free(pb); return; } void pppOverEthernetInitFailed(int pd) { PPPControl* pc; /* FIXME: re-enable that * pppHup(pd); * pppStop(pd); */ 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, ("pppOverEthernetLinkStatusCB: unit %d: Connecting\n", pd)); pppStart(pd); } else { pppOverEthernetInitFailed(pd); } } #endif #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; u16_t tot_len; /* @todo: try to use pbuf_header() here! */ pb = pbuf_alloc(PBUF_LINK, PPPOE_HDRLEN + sizeof(protocol), PBUF_RAM); if(!pb) { LINK_STATS_INC(link.memerr); LINK_STATS_INC(link.proterr); snmp_inc_ifoutdiscards(&pc->netif); return ERR_MEM; } pbuf_header(pb, -(s16_t)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); tot_len = pb->tot_len; if(pppoe_xmit(pc->pppoe_sc, pb) != ERR_OK) { LINK_STATS_INC(link.err); snmp_inc_ifoutdiscards(&pc->netif); return PPPERR_DEVICE; } snmp_add_ifoutoctets(&pc->netif, tot_len); snmp_inc_ifoutucastpkts(&pc->netif); LINK_STATS_INC(link.xmit); return ERR_OK; } #endif /* PPPOE_SUPPORT */ /* Send a packet on the given connection. * * This is the low level function that send the PPP packet. */ static err_t ppp_low_level_output(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr) { int pd = (int)(size_t)netif->state; PPPControl *pc = &pppControl[pd]; #if PPPOS_SUPPORT u_short protocol = PPP_IP; 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, ("ppp_low_level_output[%d]: bad parms prot=%d pb=%p\n", pd, PPP_IP, (void*)pb)); LINK_STATS_INC(link.opterr); LINK_STATS_INC(link.drop); snmp_inc_ifoutdiscards(netif); return ERR_ARG; } /* Check that the link is up. */ if (phase == PHASE_DEAD) { PPPDEBUG(LOG_ERR, ("ppp_low_level_output[%d]: link not up\n", pd)); LINK_STATS_INC(link.rterr); LINK_STATS_INC(link.drop); snmp_inc_ifoutdiscards(netif); 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, ("ppp_low_level_output[%d]: first alloc fail\n", pd)); LINK_STATS_INC(link.memerr); LINK_STATS_INC(link.drop); snmp_inc_ifoutdiscards(netif); 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, ("ppp_low_level_output[%d]: bad IP packet\n", pd)); LINK_STATS_INC(link.proterr); LINK_STATS_INC(link.drop); snmp_inc_ifoutdiscards(netif); 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, ("ppp_low_level_output[%d]: Alloc err - dropping proto=%d\n", pd, protocol)); pbuf_free(headMB); LINK_STATS_INC(link.memerr); LINK_STATS_INC(link.drop); snmp_inc_ifoutdiscards(netif); return ERR_MEM; } /* Send it. */ PPPDEBUG(LOG_INFO, ("ppp_low_level_output[%d]: proto=0x%"X16_F"\n", pd, protocol)); nPut(pc, headMB); #endif /* PPPOS_SUPPORT */ return ERR_OK; } /* * Return the Maximum Transmission Unit for the given PPP connection. */ u_short pppMTU(int pd) { PPPControl *pc = &pppControl[pd]; u_short 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; LWIP_ASSERT("PPPOE_HDRLEN + n <= 0xffff", PPPOE_HDRLEN + n <= 0xffff); pb = pbuf_alloc(PBUF_LINK, (u16_t)(PPPOE_HDRLEN + n), PBUF_RAM); if(!pb) { LINK_STATS_INC(link.memerr); LINK_STATS_INC(link.proterr); snmp_inc_ifoutdiscards(&pc->netif); return PPPERR_ALLOC; } pbuf_header(pb, -(s16_t)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); snmp_inc_ifoutdiscards(&pc->netif); return PPPERR_DEVICE; } snmp_add_ifoutoctets(&pc->netif, (u16_t)n); snmp_inc_ifoutucastpkts(&pc->netif); 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 ppp_output(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); snmp_inc_ifoutdiscards(&pc->netif); 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, ("ppp_output[%d]: Alloc err - dropping pbuf len=%d\n", pd, headMB->len)); /*"ppp_output[%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); snmp_inc_ifoutdiscards(&pc->netif); return PPPERR_ALLOC; } PPPDEBUG(LOG_INFO, ("ppp_output[%d]: len=%d\n", pd, headMB->len)); /* "ppp_output[%d]: %d:%.*H", pd, headMB->len, LWIP_MIN(headMB->len * 2, 40), headMB->payload)); */ nPut(pc, headMB); #endif /* PPPOS_SUPPORT */ return PPPERR_NONE; } /* FIXME: rename all output() to pppWrite() */ /******************************************************************** * * output - Output PPP packet. */ /* void output (int unit, unsigned char *p, int len) { pppWrite(unit, p, len); } */ /************************************************************************ * Functions called by various PPP subsystems to configure * the PPP interface or change the PPP phase. */ /* * new_phase - signal the start of a new phase of pppd's operation. */ void new_phase(int p) { phase = p; #if PPP_NOTIFY /* The one willing notify support should add here the code to be notified of phase changes */ #endif /* PPP_NOTIFY */ } /* * ppp_send_config - configure the transmit-side characteristics of * the ppp interface. */ int ppp_send_config(int unit, int mtu, u_int32_t accm, 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)((accm >> (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])); return 0; } /* * ppp_recv_config - configure the receive-side characteristics of * the ppp interface. */ int ppp_recv_config(int unit, int mru, u_int32_t accm, int pcomp, int accomp) { PPPControl *pc = &pppControl[unit]; int i; SYS_ARCH_DECL_PROTECT(lev); LWIP_UNUSED_ARG(accomp); LWIP_UNUSED_ARG(pcomp); LWIP_UNUSED_ARG(mru); /* Load the ACCM bits for the 32 control codes. */ SYS_ARCH_PROTECT(lev); for (i = 0; i < 32 / 8; i++) { /* @todo: does this work? ext_accm has been modified from pppd! */ pc->rx.inACCM[i] = (u_char)(accm >> (i * 8)); } SYS_ARCH_UNPROTECT(lev); PPPDEBUG(LOG_INFO, ("ppp_recv_config[%d]: inACCM=%X %X %X %X\n", unit, pc->rx.inACCM[0], pc->rx.inACCM[1], pc->rx.inACCM[2], pc->rx.inACCM[3])); return 0; } /* * sifaddr - Config the interface IP addresses and netmask. */ int sifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr, u_int32_t net_mask) { PPPControl *pc = &pppControl[unit]; int st = 1; if (unit < 0 || unit >= NUM_PPP || !pc->openFlag) { st = 0; PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", unit)); } else { SMEMCPY(&pc->addrs.our_ipaddr, &our_adr, sizeof(our_adr)); SMEMCPY(&pc->addrs.his_ipaddr, &his_adr, sizeof(his_adr)); SMEMCPY(&pc->addrs.netmask, &net_mask, sizeof(net_mask)); /* FIXME: re-enable DNS * 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. */ int cifaddr (int unit, u_int32_t our_adr, u_int32_t his_adr) { /* FIXME: do the code which clear a IP on a PPP interface */ return 0; } /* * sifup - Config the interface up and enable IP packets to pass. */ int sifup(int u) { PPPControl *pc = &pppControl[u]; int st = 1; if (u < 0 || u >= NUM_PPP || !pc->openFlag) { st = 0; PPPDEBUG(LOG_WARNING, ("sifup[%d]: bad parms\n", u)); } else { netif_remove(&pc->netif); if (netif_add(&pc->netif, &pc->addrs.our_ipaddr, &pc->addrs.netmask, &pc->addrs.his_ipaddr, (void *)(size_t)u, ppp_netif_init_cb, ip_input)) { netif_set_up(&pc->netif); pc->if_up = 1; pc->errCode = PPPERR_NONE; PPPDEBUG(LOG_DEBUG, ("sifup: unit %d: linkStatusCB=%p errCode=%d\n", u, 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", u)); } } return st; } /* * ppp_netif_init_cb - netif init callback */ static err_t ppp_netif_init_cb(struct netif *netif) { netif->name[0] = 'p'; netif->name[1] = 'p'; netif->output = ppp_low_level_output; netif->mtu = pppMTU((int)(size_t)netif->state); netif->flags = NETIF_FLAG_POINTTOPOINT | NETIF_FLAG_LINK_UP; #if LWIP_NETIF_HOSTNAME /* @todo: Initialize interface hostname */ /* netif_set_hostname(netif, "lwip"); */ #endif /* LWIP_NETIF_HOSTNAME */ return ERR_OK; } /******************************************************************** * * sifdown - Disable the indicated protocol and config the interface * down if there are no remaining protocols. */ int sifdown (int u) { /* FIXME: do the code which shutdown a PPP interface */ return 1; } /* * 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; } /* * netif_set_mtu - set the MTU on the PPP network interface. */ void netif_set_mtu(int unit, int mtu) { /* FIXME: set lwIP MTU */ } /* * netif_get_mtu - get PPP interface MTU */ int netif_get_mtu(int mtu) { /* FIXME: get lwIP MTU */ return 1492; } /******************************************************************** * * sifdefaultroute - assign a default route through the address given. * * If the global default_rt_repl_rest flag is set, then this function * already replaced the original system defaultroute with some other * route and it should just replace the current defaultroute with * another one, without saving the current route. Use: demand mode, * when pppd sets first a defaultroute it it's temporary ppp0 addresses * and then changes the temporary addresses to the addresses for the real * ppp connection when it has come up. */ int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway, bool replace) { /* FIXME: do the code which add the default route */ return 0; } /******************************************************************** * * cifdefaultroute - delete a default route through the address given. */ int cifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway) { /* FIXME: do the code which remove the default route */ return 0; } /******************************************************************** * * sifproxyarp - Make a proxy ARP entry for the peer. */ int sifproxyarp (int unit, u_int32_t his_adr) { /* FIXME: do we really need that in IPCP ? */ return 0; } /******************************************************************** * * cifproxyarp - Delete the proxy ARP entry for the peer. */ int cifproxyarp (int unit, u_int32_t his_adr) { /* FIXME: do we really need that in IPCP ? */ return 0; } /******************************************************************** * * sifvjcomp - config tcp header compression */ int sifvjcomp (int u, int vjcomp, int cidcomp, int maxcid) { /* FIXME: add VJ support */ return 1; } /******************************************************************** * * get_idle_time - return how long the link has been idle. */ int get_idle_time(int u, struct ppp_idle *ip) { /* FIXME: add idle time support */ return 1; } /******************************************************************** * * get_loop_output - get outgoing packets from the ppp device, * and detect when we want to bring the real link up. * Return value is 1 if we need to bring up the link, 0 otherwise. */ int get_loop_output(void) { /* FIXME: necessary for "demand", do we really need to support on-demand ? */ 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. */ u_int32_t GetMask (u_int32_t addr) { /* FIXME: do we really need that in IPCP ? */ return 0; } #if PPP_PROTOCOLNAME /* List of protocol names, to make our messages a little more informative. */ struct protocol_list { u_short proto; const char *name; } protocol_list[] = { { 0x21, "IP" }, { 0x23, "OSI Network Layer" }, { 0x25, "Xerox NS IDP" }, { 0x27, "DECnet Phase IV" }, { 0x29, "Appletalk" }, { 0x2b, "Novell IPX" }, { 0x2d, "VJ compressed TCP/IP" }, { 0x2f, "VJ uncompressed TCP/IP" }, { 0x31, "Bridging PDU" }, { 0x33, "Stream Protocol ST-II" }, { 0x35, "Banyan Vines" }, { 0x39, "AppleTalk EDDP" }, { 0x3b, "AppleTalk SmartBuffered" }, { 0x3d, "Multi-Link" }, { 0x3f, "NETBIOS Framing" }, { 0x41, "Cisco Systems" }, { 0x43, "Ascom Timeplex" }, { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" }, { 0x47, "DCA Remote Lan" }, { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" }, { 0x4b, "SNA over 802.2" }, { 0x4d, "SNA" }, { 0x4f, "IP6 Header Compression" }, { 0x51, "KNX Bridging Data" }, { 0x53, "Encryption" }, { 0x55, "Individual Link Encryption" }, { 0x57, "IPv6" }, { 0x59, "PPP Muxing" }, { 0x5b, "Vendor-Specific Network Protocol" }, { 0x61, "RTP IPHC Full Header" }, { 0x63, "RTP IPHC Compressed TCP" }, { 0x65, "RTP IPHC Compressed non-TCP" }, { 0x67, "RTP IPHC Compressed UDP 8" }, { 0x69, "RTP IPHC Compressed RTP 8" }, { 0x6f, "Stampede Bridging" }, { 0x73, "MP+" }, { 0xc1, "NTCITS IPI" }, { 0xfb, "single-link compression" }, { 0xfd, "Compressed Datagram" }, { 0x0201, "802.1d Hello Packets" }, { 0x0203, "IBM Source Routing BPDU" }, { 0x0205, "DEC LANBridge100 Spanning Tree" }, { 0x0207, "Cisco Discovery Protocol" }, { 0x0209, "Netcs Twin Routing" }, { 0x020b, "STP - Scheduled Transfer Protocol" }, { 0x020d, "EDP - Extreme Discovery Protocol" }, { 0x0211, "Optical Supervisory Channel Protocol" }, { 0x0213, "Optical Supervisory Channel Protocol" }, { 0x0231, "Luxcom" }, { 0x0233, "Sigma Network Systems" }, { 0x0235, "Apple Client Server Protocol" }, { 0x0281, "MPLS Unicast" }, { 0x0283, "MPLS Multicast" }, { 0x0285, "IEEE p1284.4 standard - data packets" }, { 0x0287, "ETSI TETRA Network Protocol Type 1" }, { 0x0289, "Multichannel Flow Treatment Protocol" }, { 0x2063, "RTP IPHC Compressed TCP No Delta" }, { 0x2065, "RTP IPHC Context State" }, { 0x2067, "RTP IPHC Compressed UDP 16" }, { 0x2069, "RTP IPHC Compressed RTP 16" }, { 0x4001, "Cray Communications Control Protocol" }, { 0x4003, "CDPD Mobile Network Registration Protocol" }, { 0x4005, "Expand accelerator protocol" }, { 0x4007, "ODSICP NCP" }, { 0x4009, "DOCSIS DLL" }, { 0x400B, "Cetacean Network Detection Protocol" }, { 0x4021, "Stacker LZS" }, { 0x4023, "RefTek Protocol" }, { 0x4025, "Fibre Channel" }, { 0x4027, "EMIT Protocols" }, { 0x405b, "Vendor-Specific Protocol (VSP)" }, { 0x8021, "Internet Protocol Control Protocol" }, { 0x8023, "OSI Network Layer Control Protocol" }, { 0x8025, "Xerox NS IDP Control Protocol" }, { 0x8027, "DECnet Phase IV Control Protocol" }, { 0x8029, "Appletalk Control Protocol" }, { 0x802b, "Novell IPX Control Protocol" }, { 0x8031, "Bridging NCP" }, { 0x8033, "Stream Protocol Control Protocol" }, { 0x8035, "Banyan Vines Control Protocol" }, { 0x803d, "Multi-Link Control Protocol" }, { 0x803f, "NETBIOS Framing Control Protocol" }, { 0x8041, "Cisco Systems Control Protocol" }, { 0x8043, "Ascom Timeplex" }, { 0x8045, "Fujitsu LBLB Control Protocol" }, { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" }, { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" }, { 0x804b, "SNA over 802.2 Control Protocol" }, { 0x804d, "SNA Control Protocol" }, { 0x804f, "IP6 Header Compression Control Protocol" }, { 0x8051, "KNX Bridging Control Protocol" }, { 0x8053, "Encryption Control Protocol" }, { 0x8055, "Individual Link Encryption Control Protocol" }, { 0x8057, "IPv6 Control Protocol" }, { 0x8059, "PPP Muxing Control Protocol" }, { 0x805b, "Vendor-Specific Network Control Protocol (VSNCP)" }, { 0x806f, "Stampede Bridging Control Protocol" }, { 0x8073, "MP+ Control Protocol" }, { 0x80c1, "NTCITS IPI Control Protocol" }, { 0x80fb, "Single Link Compression Control Protocol" }, { 0x80fd, "Compression Control Protocol" }, { 0x8207, "Cisco Discovery Protocol Control" }, { 0x8209, "Netcs Twin Routing" }, { 0x820b, "STP - Control Protocol" }, { 0x820d, "EDPCP - Extreme Discovery Protocol Ctrl Prtcl" }, { 0x8235, "Apple Client Server Protocol Control" }, { 0x8281, "MPLSCP" }, { 0x8285, "IEEE p1284.4 standard - Protocol Control" }, { 0x8287, "ETSI TETRA TNP1 Control Protocol" }, { 0x8289, "Multichannel Flow Treatment Protocol" }, { 0xc021, "Link Control Protocol" }, { 0xc023, "Password Authentication Protocol" }, { 0xc025, "Link Quality Report" }, { 0xc027, "Shiva Password Authentication Protocol" }, { 0xc029, "CallBack Control Protocol (CBCP)" }, { 0xc02b, "BACP Bandwidth Allocation Control Protocol" }, { 0xc02d, "BAP" }, { 0xc05b, "Vendor-Specific Authentication Protocol (VSAP)" }, { 0xc081, "Container Control Protocol" }, { 0xc223, "Challenge Handshake Authentication Protocol" }, { 0xc225, "RSA Authentication Protocol" }, { 0xc227, "Extensible Authentication Protocol" }, { 0xc229, "Mitsubishi Security Info Exch Ptcl (SIEP)" }, { 0xc26f, "Stampede Bridging Authorization Protocol" }, { 0xc281, "Proprietary Authentication Protocol" }, { 0xc283, "Proprietary Authentication Protocol" }, { 0xc481, "Proprietary Node ID Authentication Protocol" }, { 0, NULL }, }; /* * protocol_name - find a name for a PPP protocol. */ const char * protocol_name(int proto) { struct protocol_list *lp; for (lp = protocol_list; lp->proto != 0; ++lp) if (proto == lp->proto) return lp->name; return NULL; } #endif /* PPP_PROTOCOLNAME */ #if PPP_STATS_SUPPORT /* ---- Note on PPP Stats support ---- * * The one willing link stats support should add the get_ppp_stats() * to fetch statistics from lwIP. */ /* * reset_link_stats - "reset" stats when link goes up. */ void reset_link_stats(int u) { if (!get_ppp_stats(u, &old_link_stats)) return; gettimeofday(&start_time, NULL); } /* * update_link_stats - get stats at link termination. */ void update_link_stats(int u) { struct timeval now; char numbuf[32]; if (!get_ppp_stats(u, &link_stats) || gettimeofday(&now, NULL) < 0) return; link_connect_time = now.tv_sec - start_time.tv_sec; link_stats_valid = 1; link_stats.bytes_in -= old_link_stats.bytes_in; link_stats.bytes_out -= old_link_stats.bytes_out; link_stats.pkts_in -= old_link_stats.pkts_in; link_stats.pkts_out -= old_link_stats.pkts_out; } void print_link_stats() { /* * Print connect time and statistics. */ if (link_stats_valid) { int t = (link_connect_time + 5) / 6; /* 1/10ths of minutes */ info("Connect time %d.%d minutes.", t/10, t%10); info("Sent %u bytes, received %u bytes.", link_stats.bytes_out, link_stats.bytes_in); link_stats_valid = 0; } } #endif /* PPP_STATS_SUPPORT */