/* * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. */ static void fsm_rconfnakrej(fsm *f, int code, int id, u_char *inp, int len) { int ret; int treat_as_reject; if (id != f->reqid || f->seen_ack) /* Expected id? */ return; /* Nope, toss... */ if (code == CONFNAK) { ++f->rnakloops; treat_as_reject = (f->rnakloops >= f->maxnakloops); if (f->callbacks->nakci == NULL || !(ret = f->callbacks->nakci(f, inp, len, treat_as_reject))) { ppp_error("Received bad configure-nak: %P", inp, len); return; } } else { f->rnakloops = 0; if (f->callbacks->rejci == NULL || !(ret = f->callbacks->rejci(f, inp, len))) { ppp_error("Received bad configure-rej: %P", inp, len); return; } } f->seen_ack = 1; switch (f->state) { case PPP_FSM_CLOSED: case PPP_FSM_STOPPED: fsm_sdata(f, TERMACK, id, NULL, 0); break; case PPP_FSM_REQSENT: case PPP_FSM_ACKSENT: /* They didn't agree to what we wanted - try another request */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ if (ret < 0) f->state = PPP_FSM_STOPPED; /* kludge for stopping CCP */ else fsm_sconfreq(f, 0); /* Send Configure-Request */ break; case PPP_FSM_ACKRCVD: /* Got a Nak/reject when we had already had an Ack?? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = PPP_FSM_REQSENT; break; case PPP_FSM_OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = PPP_FSM_REQSENT; break; default: break; } }
/* * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. */ static void fsm_rconfnakrej(fsm *f, int code, int id, u_char *inp, int len) { int (*proc) (fsm *, u_char *, int); int ret; FSMDEBUG(LOG_INFO, ("fsm_rconfnakrej(%s): Rcvd id %d state=%d (%s)\n", PROTO_NAME(f), id, f->state, ppperr_strerr[f->state])); if (id != f->reqid || f->seen_ack) { /* Expected id? */ return; /* Nope, toss... */ } proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci; if (!proc || !((ret = proc(f, inp, len)))) { /* Nak/reject is bad - ignore it */ FSMDEBUG(LOG_INFO, ("%s: received bad %s (length %d)\n", PROTO_NAME(f), (code==CONFNAK? "Nak": "reject"), len)); return; } f->seen_ack = 1; switch (f->state) { case LS_CLOSED: case LS_STOPPED: fsm_sdata(f, TERMACK, (u_char)id, NULL, 0); break; case LS_REQSENT: case LS_ACKSENT: /* They didn't agree to what we wanted - try another request */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ if (ret < 0) { f->state = LS_STOPPED; /* kludge for stopping CCP */ } else { fsm_sconfreq(f, 0); /* Send Configure-Request */ } break; case LS_ACKRCVD: /* Got a Nak/reject when we had already had an Ack?? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = LS_REQSENT; break; case LS_OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) { (*f->callbacks->down)(f); /* Inform upper layers */ } fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = LS_REQSENT; break; } }
/* * fsm_rconfack - Receive Configure-Ack. */ static void fsm_rconfack(fsm *f, int id, u_char *inp, int len) { FSMDEBUG(LOG_INFO, ("fsm_rconfack(%s): Rcvd id %d state=%d (%s)\n", PROTO_NAME(f), id, f->state, ppperr_strerr[f->state])); if (id != f->reqid || f->seen_ack) { /* Expected id? */ return; /* Nope, toss... */ } if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): (len == 0)) ) { /* Ack is bad - ignore it */ FSMDEBUG(LOG_INFO, ("%s: received bad Ack (length %d)\n", PROTO_NAME(f), len)); return; } f->seen_ack = 1; switch (f->state) { case LS_CLOSED: case LS_STOPPED: fsm_sdata(f, TERMACK, (u_char)id, NULL, 0); break; case LS_REQSENT: f->state = LS_ACKRCVD; f->retransmits = f->maxconfreqtransmits; break; case LS_ACKRCVD: /* Huh? an extra valid Ack? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = LS_REQSENT; break; case LS_ACKSENT: UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ f->state = LS_OPENED; f->retransmits = f->maxconfreqtransmits; if (f->callbacks->up) { (*f->callbacks->up)(f); /* Inform upper layers */ } break; case LS_OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) { (*f->callbacks->down)(f); /* Inform upper layers */ } fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = LS_REQSENT; break; } }
/* * fsm_rconfack - Receive Configure-Ack. */ static void fsm_rconfack(fsm *f, int id, u_char *inp, int len) { FSMDEBUG((LOG_INFO, "fsm_rconfack(%s): Rcvd id %d.", PROTO_NAME(f), id)); if (id != f->reqid || f->seen_ack) /* Expected id? */ return; /* Nope, toss... */ if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): (len == 0)) ){ /* Ack is bad - ignore it */ log_packet(inp, len, "Received bad configure-ack: ", LOG_ERR); FSMDEBUG((LOG_INFO, "%s: received bad Ack (length %d)", PROTO_NAME(f), len)); return; } f->seen_ack = 1; switch (f->state) { case CLOSED: case STOPPED: fsm_sdata(f, TERMACK, id, NULL, 0); break; case REQSENT: f->state = ACKRCVD; f->retransmits = f->maxconfreqtransmits; break; case ACKRCVD: /* Huh? an extra valid Ack? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = REQSENT; break; case ACKSENT: UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ f->state = OPENED; f->retransmits = f->maxconfreqtransmits; if (f->callbacks->up) (*f->callbacks->up)(f); /* Inform upper layers */ break; case OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = REQSENT; break; } }
/* * fsm_rconfnakrej - Receive Configure-Nak or Configure-Reject. */ static void fsm_rconfnakrej( fsm *f, int code, int id, u_char *inp, int len) { int (*proc)(fsm *, u_char *, int); int ret; if (id != f->reqid || f->seen_ack) /* Expected id? */ return; /* Nope, toss... */ proc = (code == CONFNAK)? f->callbacks->nakci: f->callbacks->rejci; if (!proc || !(ret = proc(f, inp, len))) { /* Nak/reject is bad - ignore it */ error("Received bad configure-nak/rej: %P", inp, len); return; } f->seen_ack = 1; switch (f->state) { case CLOSED: case STOPPED: fsm_sdata(f, TERMACK, id, NULL, 0); break; case REQSENT: case ACKSENT: /* They didn't agree to what we wanted - try another request */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ if (ret < 0) f->state = STOPPED; /* kludge for stopping CCP */ else fsm_sconfreq(f, 0); /* Send Configure-Request */ break; case ACKRCVD: /* Got a Nak/reject when we had already had an Ack?? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = REQSENT; break; case OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = REQSENT; break; } }
/* * fsm_rconfack - Receive Configure-Ack. */ static void fsm_rconfack(fsm *f, int id, u_char *inp, int len) { ppp_pcb *pcb = f->pcb; if (id != f->reqid || f->seen_ack) /* Expected id? */ return; /* Nope, toss... */ if( !(f->callbacks->ackci? (*f->callbacks->ackci)(f, inp, len): (len == 0)) ){ /* Ack is bad - ignore it */ ppp_error("Received bad configure-ack: %P", inp, len); return; } f->seen_ack = 1; f->rnakloops = 0; switch (f->state) { case PPP_FSM_CLOSED: case PPP_FSM_STOPPED: fsm_sdata(f, TERMACK, id, NULL, 0); break; case PPP_FSM_REQSENT: f->state = PPP_FSM_ACKRCVD; f->retransmits = pcb->settings.fsm_max_conf_req_transmits; break; case PPP_FSM_ACKRCVD: /* Huh? an extra valid Ack? oh well... */ UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ fsm_sconfreq(f, 0); f->state = PPP_FSM_REQSENT; break; case PPP_FSM_ACKSENT: UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ f->state = PPP_FSM_OPENED; f->retransmits = pcb->settings.fsm_max_conf_req_transmits; if (f->callbacks->up) (*f->callbacks->up)(f); /* Inform upper layers */ break; case PPP_FSM_OPENED: /* Go down and restart negotiation */ if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = PPP_FSM_REQSENT; break; default: break; } }
/* * fsm_lowerup - The lower layer is up. */ void fsm_lowerup(fsm *f) { int oldState = f->state; LWIP_UNUSED_ARG(oldState); switch( f->state ) { case LS_INITIAL: f->state = LS_CLOSED; break; case LS_STARTING: if( f->flags & OPT_SILENT ) { f->state = LS_STOPPED; } else { /* Send an initial configure-request */ fsm_sconfreq(f, 0); f->state = LS_REQSENT; } break; default: FSMDEBUG(LOG_INFO, ("%s: Up event in state %d (%s)!\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); } FSMDEBUG(LOG_INFO, ("%s: lowerup state %d (%s) -> %d (%s)\n", PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state])); }
/* * fsm_rtermack - Receive Terminate-Ack. */ static void fsm_rtermack(fsm *f) { switch (f->state) { case PPP_FSM_CLOSING: UNTIMEOUT(fsm_timeout, f); f->state = PPP_FSM_CLOSED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); break; case PPP_FSM_STOPPING: UNTIMEOUT(fsm_timeout, f); f->state = PPP_FSM_STOPPED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); break; case PPP_FSM_ACKRCVD: f->state = PPP_FSM_REQSENT; break; case PPP_FSM_OPENED: if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); f->state = PPP_FSM_REQSENT; break; default: break; } }
/* * fsm_open - Link is allowed to come up. */ void fsm_open(fsm *f) { switch( f->state ){ case PPP_FSM_INITIAL: f->state = PPP_FSM_STARTING; if( f->callbacks->starting ) (*f->callbacks->starting)(f); break; case PPP_FSM_CLOSED: if( f->flags & OPT_SILENT ) f->state = PPP_FSM_STOPPED; else { /* Send an initial configure-request */ fsm_sconfreq(f, 0); f->state = PPP_FSM_REQSENT; } break; case PPP_FSM_CLOSING: f->state = PPP_FSM_STOPPING; /* fall through */ /* no break */ case PPP_FSM_STOPPED: case PPP_FSM_OPENED: if( f->flags & OPT_RESTART ){ fsm_lowerdown(f); fsm_lowerup(f); } break; default: break; } }
/* * fsm_rtermack - Receive Terminate-Ack. */ static void fsm_rtermack(fsm *f) { FSMDEBUG((LOG_INFO, "fsm_rtermack(%s): state=%d (%s)\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); switch (f->state) { case LS_CLOSING: UNTIMEOUT(fsm_timeout, f); f->state = LS_CLOSED; if( f->callbacks->finished ) { (*f->callbacks->finished)(f); } break; case LS_STOPPING: UNTIMEOUT(fsm_timeout, f); f->state = LS_STOPPED; if( f->callbacks->finished ) { (*f->callbacks->finished)(f); } break; case LS_ACKRCVD: f->state = LS_REQSENT; break; case LS_OPENED: if (f->callbacks->down) { (*f->callbacks->down)(f); /* Inform upper layers */ } fsm_sconfreq(f, 0); break; } }
/* * fsm_rtermack - Receive Terminate-Ack. */ static void fsm_rtermack(fsm *f) { FSMDEBUG((LOG_INFO, "fsm_rtermack(%s).", PROTO_NAME(f))); switch (f->state) { case CLOSING: UNTIMEOUT(fsm_timeout, f); f->state = CLOSED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); break; case STOPPING: UNTIMEOUT(fsm_timeout, f); f->state = STOPPED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); break; case ACKRCVD: f->state = REQSENT; break; case OPENED: if (f->callbacks->down) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); break; } }
/* * fsm_timeout - Timeout expired. */ static void fsm_timeout(void *arg) { fsm *f = (fsm *) arg; switch (f->state) { case LS_CLOSING: case LS_STOPPING: if( f->retransmits <= 0 ) { FSMDEBUG(LOG_WARNING, ("%s: timeout sending Terminate-Request state=%d (%s)\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); /* * We've waited for an ack long enough. Peer probably heard us. */ f->state = (f->state == LS_CLOSING)? LS_CLOSED: LS_STOPPED; if( f->callbacks->finished ) { (*f->callbacks->finished)(f); } } else { FSMDEBUG(LOG_WARNING, ("%s: timeout resending Terminate-Requests state=%d (%s)\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); /* Send Terminate-Request */ fsm_sdata(f, TERMREQ, f->reqid = ++f->id, (u_char *) f->term_reason, f->term_reason_len); TIMEOUT(fsm_timeout, f, f->timeouttime); --f->retransmits; } break; case LS_REQSENT: case LS_ACKRCVD: case LS_ACKSENT: if (f->retransmits <= 0) { FSMDEBUG(LOG_WARNING, ("%s: timeout sending Config-Requests state=%d (%s)\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); f->state = LS_STOPPED; if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) { (*f->callbacks->finished)(f); } } else { FSMDEBUG(LOG_WARNING, ("%s: timeout resending Config-Request state=%d (%s)\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); /* Retransmit the configure-request */ if (f->callbacks->retransmit) { (*f->callbacks->retransmit)(f); } fsm_sconfreq(f, 1); /* Re-send Configure-Request */ if( f->state == LS_ACKRCVD ) { f->state = LS_REQSENT; } } break; default: FSMDEBUG(LOG_INFO, ("%s: UNHANDLED timeout event in state %d (%s)!\n", PROTO_NAME(f), f->state, ppperr_strerr[f->state])); } }
/* * fsm_timeout - Timeout expired. */ static void fsm_timeout(void *arg) { fsm *f = (fsm *) arg; switch (f->state) { case CLOSING: case STOPPING: if( f->retransmits <= 0 ){ /* * We've waited for an ack long enough. Peer probably heard us. */ f->state = (f->state == CLOSING)? CLOSED: STOPPED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); } else { /* Send Terminate-Request */ fsm_sdata(f, TERMREQ, f->reqid = ++f->id, (u_char *) f->term_reason, f->term_reason_len); TIMEOUT(fsm_timeout, f, f->timeouttime); --f->retransmits; } break; case REQSENT: case ACKRCVD: case ACKSENT: if (f->retransmits <= 0) { syslog(LOG_WARNING, "%s: timeout sending Config-Requests", PROTO_NAME(f)); f->state = STOPPED; if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) (*f->callbacks->finished)(f); } else { /* Retransmit the configure-request */ if (f->callbacks->retransmit) (*f->callbacks->retransmit)(f); fsm_sconfreq(f, 1); /* Re-send Configure-Request */ if( f->state == ACKRCVD ) f->state = REQSENT; } break; default: FSMDEBUG((LOG_INFO, "%s: Timeout event in state %d!", PROTO_NAME(f), f->state)); } }
/* * fsm_timeout - Timeout expired. */ static void fsm_timeout(void *arg) { fsm *f = (fsm *) arg; ppp_pcb *pcb = f->pcb; switch (f->state) { case PPP_FSM_CLOSING: case PPP_FSM_STOPPING: if( f->retransmits <= 0 ){ /* * We've waited for an ack long enough. Peer probably heard us. */ f->state = (f->state == PPP_FSM_CLOSING)? PPP_FSM_CLOSED: PPP_FSM_STOPPED; if( f->callbacks->finished ) (*f->callbacks->finished)(f); } else { /* Send Terminate-Request */ fsm_sdata(f, TERMREQ, f->reqid = ++f->id, (const u_char *) f->term_reason, f->term_reason_len); TIMEOUT(fsm_timeout, f, pcb->settings.fsm_timeout_time); --f->retransmits; } break; case PPP_FSM_REQSENT: case PPP_FSM_ACKRCVD: case PPP_FSM_ACKSENT: if (f->retransmits <= 0) { ppp_warn("%s: timeout sending Config-Requests", PROTO_NAME(f)); f->state = PPP_FSM_STOPPED; if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) (*f->callbacks->finished)(f); } else { /* Retransmit the configure-request */ if (f->callbacks->retransmit) (*f->callbacks->retransmit)(f); fsm_sconfreq(f, 1); /* Re-send Configure-Request */ if( f->state == PPP_FSM_ACKRCVD ) f->state = PPP_FSM_REQSENT; } break; default: FSMDEBUG(("%s: Timeout event in state %d!", PROTO_NAME(f), f->state)); /* no break */ } }
/* * fsm_lowerup - The lower layer is up. */ void fsm_lowerup(fsm *f) { switch( f->state ){ case PPP_FSM_INITIAL: f->state = PPP_FSM_CLOSED; break; case PPP_FSM_STARTING: if( f->flags & OPT_SILENT ) f->state = PPP_FSM_STOPPED; else { /* Send an initial configure-request */ fsm_sconfreq(f, 0); f->state = PPP_FSM_REQSENT; } break; default: FSMDEBUG(("%s: Up event in state %d!", PROTO_NAME(f), f->state)); /* no break */ } }
/* * fsm_open - Link is allowed to come up. */ void fsm_open(fsm *f) { int oldState = f->state; LWIP_UNUSED_ARG(oldState); switch( f->state ) { case LS_INITIAL: f->state = LS_STARTING; if( f->callbacks->starting ) { (*f->callbacks->starting)(f); } break; case LS_CLOSED: if( f->flags & OPT_SILENT ) { f->state = LS_STOPPED; } else { /* Send an initial configure-request */ fsm_sconfreq(f, 0); f->state = LS_REQSENT; } break; case LS_CLOSING: f->state = LS_STOPPING; /* fall through */ case LS_STOPPED: case LS_OPENED: if( f->flags & OPT_RESTART ) { fsm_lowerdown(f); fsm_lowerup(f); } break; } FSMDEBUG(LOG_INFO, ("%s: open state %d (%s) -> %d (%s)\n", PROTO_NAME(f), oldState, ppperr_strerr[oldState], f->state, ppperr_strerr[f->state])); }
/* * fsm_rconfreq - Receive Configure-Request. */ static void fsm_rconfreq(fsm *f, u_char id, u_char *inp, int len) { int code, reject_if_disagree; FSMDEBUG(LOG_INFO, ("fsm_rconfreq(%s): Rcvd id %d state=%d (%s)\n", PROTO_NAME(f), id, f->state, ppperr_strerr[f->state])); switch( f->state ) { case LS_CLOSED: /* Go away, we're closed */ fsm_sdata(f, TERMACK, id, NULL, 0); return; case LS_CLOSING: case LS_STOPPING: return; case LS_OPENED: /* Go down and restart negotiation */ if( f->callbacks->down ) { (*f->callbacks->down)(f); /* Inform upper layers */ } fsm_sconfreq(f, 0); /* Send initial Configure-Request */ break; case LS_STOPPED: /* Negotiation started by our peer */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = LS_REQSENT; break; } /* * Pass the requested configuration options * to protocol-specific code for checking. */ if (f->callbacks->reqci) { /* Check CI */ reject_if_disagree = (f->nakloops >= f->maxnakloops); code = (*f->callbacks->reqci)(f, inp, &len, reject_if_disagree); } else if (len) { code = CONFREJ; /* Reject all CI */ } else { code = CONFACK; } /* send the Ack, Nak or Rej to the peer */ fsm_sdata(f, (u_char)code, id, inp, len); if (code == CONFACK) { if (f->state == LS_ACKRCVD) { UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ f->state = LS_OPENED; if (f->callbacks->up) { (*f->callbacks->up)(f); /* Inform upper layers */ } } else { f->state = LS_ACKSENT; } f->nakloops = 0; } else { /* we sent CONFACK or CONFREJ */ if (f->state != LS_ACKRCVD) { f->state = LS_REQSENT; } if( code == CONFNAK ) { ++f->nakloops; } } }
/* * fsm_rconfreq - Receive Configure-Request. */ static void fsm_rconfreq(fsm *f, u_char id, u_char *inp, int len) { int code, reject_if_disagree; switch( f->state ){ case PPP_FSM_CLOSED: /* Go away, we're closed */ fsm_sdata(f, TERMACK, id, NULL, 0); return; case PPP_FSM_CLOSING: case PPP_FSM_STOPPING: return; case PPP_FSM_OPENED: /* Go down and restart negotiation */ if( f->callbacks->down ) (*f->callbacks->down)(f); /* Inform upper layers */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = PPP_FSM_REQSENT; break; case PPP_FSM_STOPPED: /* Negotiation started by our peer */ fsm_sconfreq(f, 0); /* Send initial Configure-Request */ f->state = PPP_FSM_REQSENT; break; default: break; } /* * Pass the requested configuration options * to protocol-specific code for checking. */ if (f->callbacks->reqci){ /* Check CI */ reject_if_disagree = (f->nakloops >= f->maxnakloops); code = (*f->callbacks->reqci)(f, inp, &len, reject_if_disagree); } else if (len) code = CONFREJ; /* Reject all CI */ else code = CONFACK; /* send the Ack, Nak or Rej to the peer */ fsm_sdata(f, code, id, inp, len); if (code == CONFACK) { if (f->state == PPP_FSM_ACKRCVD) { UNTIMEOUT(fsm_timeout, f); /* Cancel timeout */ f->state = PPP_FSM_OPENED; if (f->callbacks->up) (*f->callbacks->up)(f); /* Inform upper layers */ } else f->state = PPP_FSM_ACKSENT; f->nakloops = 0; } else { /* we sent CONFACK or CONFREJ */ if (f->state != PPP_FSM_ACKRCVD) f->state = PPP_FSM_REQSENT; if( code == CONFNAK ) ++f->nakloops; } }