66  * When the link comes up we want to be able to wait for a short while,
68  * configure-requests.  We do this by delaying the fsm_lowerup call.
225 static void lcp_up(fsm *f);		/* We're UP */
226 static void lcp_down(fsm *f);		/* We're DOWN */
227 static void lcp_starting (fsm *);	/* We need lower layer up */
228 static void lcp_finished (fsm *);	/* We need lower layer down */
254     lcp_starting,		/* Called when we want the lower layer up */
255     lcp_finished,		/* Called when we want the lower layer down */
445 	 * because we are in passive/silent mode or because we have  in lcp_close()
463      * if we are going to ask for A/C and protocol compression.  in lcp_lowerup()
636      * rejected packet.  We only get here if LCP is in the OPENED state.  in lcp_sprotrej()
785      * NB: we only ask for one of CHAP, UPAP, or EAP, even if we will  in lcp_cilen()
786      * accept more than one.  We prefer EAP first, then CHAP, then  in lcp_cilen()
955      * CIs must be in exactly the same order that we sent.  in lcp_ackci()
957      * If we find any deviations, then this packet is bad.  in lcp_ackci()
1134     lcp_options no;		/* options we've seen Naks for */  in lcp_nakci()
1143      * Any Nak'd CIs must be in exactly the same order that we sent.  in lcp_nakci()
1145      * If we find any deviations, then this packet is bad.  in lcp_nakci()
1235      * We don't care if they want to send us smaller packets than  in lcp_nakci()
1236      * we want.  Therefore, accept any MRU less than what we asked for,  in lcp_nakci()
1238      * If they send us a bigger MRU than what we asked, accept it, up to  in lcp_nakci()
1239      * the limit of the default MRU we'd get if we didn't negotiate.  in lcp_nakci()
1292 	    /* If we were asking for EAP, then we need to stop that. */  in lcp_nakci()
1299 	    /* If we were asking for CHAP, then we need to stop that. */  in lcp_nakci()
1306 	     * If we weren't asking for CHAP or EAP, then we were asking for  in lcp_nakci()
1317 	    /* Stop asking for EAP, if we were. */  in lcp_nakci()
1327 		 * We were asking for our preferred algorithm, they must  in lcp_nakci()
1332 			/* Use their suggestion if we support it ... */  in lcp_nakci()
1349 		 * Stop asking for PAP if we were asking for it.  in lcp_nakci()
1362 	     * If we were asking for EAP, and they're Conf-Naking EAP,  in lcp_nakci()
1369 	     * We don't recognize what they're suggesting.  in lcp_nakci()
1370 	     * Stop asking for what we were asking for.  in lcp_nakci()
1396      * If they can't cope with our link quality protocol, we'll have  in lcp_nakci()
1397      * to stop asking for LQR.  We haven't got any other protocol.  in lcp_nakci()
1435      * than the one we want.  in lcp_nakci()
1463      * on an option that we didn't include in our request packet.  in lcp_nakci()
1464      * If we see an option that we requested, or one we've already seen  in lcp_nakci()
1466      * If we wanted to respond by starting to negotiate on the requested  in lcp_nakci()
1467      * option(s), we could, but we don't, because except for the  in lcp_nakci()
1468      * authentication type and quality protocol, if we are not negotiating  in lcp_nakci()
1469      * an option, it is because we were told not to.  in lcp_nakci()
1473      * reports', but if we didn't ask for them, we don't want them.  in lcp_nakci()
1474      * An option we don't recognize represents the peer asking to  in lcp_nakci()
1475      * negotiate some option we don't support, so ignore it.  in lcp_nakci()
1557      * OK, the Nak is good.  Now we can update state.  in lcp_nakci()
1558      * If there are any options left we ignore them.  in lcp_nakci()
1600      * Any Rejected CIs must be in exactly the same order that we sent.  in lcp_rejci()
1602      * If we find any deviations, then this packet is bad.  in lcp_rejci()
1798      * Now we can update state.  in lcp_rejci()
1886 	     * we'll just ignore it.  in lcp_reqci()
1936 		 * Reject the option if we're not willing to authenticate.  in lcp_reqci()
1949 	     * with two or more authenticate-protocol requests, then we will  in lcp_reqci()
1951 	     * Whether we end up doing CHAP, UPAP, or EAP depends then on  in lcp_reqci()
1957 		/* we've already accepted CHAP or EAP */  in lcp_reqci()
1970 		if (!ao->neg_upap) {	/* we don't want to do PAP */  in lcp_reqci()
1995 		/* we've already accepted PAP or EAP */  in lcp_reqci()
2008 		if (!ao->neg_chap) {	/* we don't want to do CHAP */  in lcp_reqci()
2029 		     * We can't/won't do the requested type,  in lcp_reqci()
2046 		/* we've already accepted CHAP or PAP */  in lcp_reqci()
2059 		if (!ao->neg_eap) {	/* we don't want to do EAP */  in lcp_reqci()
2084 	     * We don't recognize the protocol they're asking for.  in lcp_reqci()
2085 	     * Nak it with something we're willing to do.  in lcp_reqci()
2086 	     * (At this point we know ao->neg_upap || ao->neg_chap ||  in lcp_reqci()
2127 	     * XXX When should we Nak this, and what with?  in lcp_reqci()
2257      * If we wanted to send additional NAKs (for unsent CIs), the  in lcp_reqci()
2259      * At present there are no cases where we want to ask the  in lcp_reqci()
2304      * Set our MTU to the smaller of the MTU we wanted and  in lcp_up()
2305      * the MRU our peer wanted.  If we negotiated an MRU,  in lcp_up()
2306      * set our MRU to the larger of value we wanted and  in lcp_up()
2307      * the value we got in the negotiation.  in lcp_up()
2310      * MTU we want to use, and our link MRU.  in lcp_up()