usr.sbin/in.routed/rdisc.c

3  * Use is subject to license terms.
21  *    may be used to endorse or promote products derived from this software
49  * The size of the control buffer passed to recvmsg() used to receive
98  * without driving it to infinity
111     uint32_t to,
127 		    " from %s to %s via %s life=%d\n",
128 		    act, naddr_ntoa(from), naddr_ntoa(to),
144 		trace_act("%s Router Solic. from %s to %s via %s rsvd=%#x",
145 		    act, naddr_ntoa(from), naddr_ntoa(to),
181 		 * On Solaris also open an AF_UNIX socket to
182 		 * pass default router information to mib agent
245 		/* stop listening to advertisements */
256 		/* start listening to advertisements */
268 		/* stop listening to solicitations */
292  * start or stop supplying routes to other systems.
334 	 * to advertising or back.
374 			 * to at most SUPPLY_INTERVAL.
375 			 * This is contrary to RFC 1256, but defends against
392 		 * If switching from client to server, get rid of old
400 			 * for cur_drp to prevent segmentation fault
436 	 * Delete old redirected routes to keep the kernel table small,
437 	 * and to prevent black holes.  Check that the kernel table
464 	/* make a note to re-solicit, turn RIP on or off, etc. */
485 	/* make a note to re-solicit, turn RIP on or off, etc. */
551 	 * This is contrary to RFC 1256, but defends against black holes.
566 		    " is bad--wait to solicit",
653 		 * Prefer the current route to prevent thrashing.
654 		 * Prefer shorter lifetimes to speed the detection of
673 	 * switch to a better RDISC advertiser
724 			 * to rts_spare[0].
734 				trace_act("Switching to "
745 		 * Get ready to redo the entire table. The table should
761 		 * or switched to a router with better preference.
782 			 * In the former case, we may need to add
783 			 * this to rt_spares. In the latter case,
784 			 * if the pref has changed, need to take it
788 			 * in case we have to add this drp to kernel.
804 					 * to check if this entry still belongs
818 					 * needs to be removed as it no longer
893 	 * ignore pointers to ourself and routes via unreachable networks
905 	 * Convert preference to an unsigned value
930 			/* look for an entry worse than the new one to reuse. */
939 			/* look for the least valuable entry to reuse */
1018 	 * don't want to generate duplicate packets.
1036 			msg = "Send pt-to-pt";
1061 		 * For multicast, we have to choose the source
1063 		 * (non-point-to-point) or the remote address.
1223     in_addr_t	to,
1241 		trace_pkt("unrecognized ICMP Router %s code=%d from %s to %s",
1242 		    type, p->icmp.icmp_code, naddr_ntoa(from), naddr_ntoa(to));
1246 	trace_rdisc(act, from, to, ifp, p, len);
1250 		    "to %s", type, naddr_ntoa(from), naddr_ntoa(to));
1382 			 * but cannot due to kernel limitations.
1385 			/* Respond with a point-to-point advertisement */