sbin/routed/if.c

56 static struct interface *ahash_tbl[AHASH_LEN];
60 static struct interface *bhash_tbl[BHASH_LEN];
63 /* hash for physical interface names.
68 static struct interface *nhash_tbl[NHASH_LEN];
82 int	have_ripv1_out;			/* have a RIPv1 interface */
86 static void if_bad(struct interface *);
87 static int addrouteforif(struct interface *);
89 static struct interface**
102 /* Link a new interface into the lists and hash tables.
105 if_link(struct interface *ifp)
107 	struct interface **hifp;
141 /* Find the interface with an address
143 struct interface *
148 	struct interface *ifp, *possible = NULL;
179 /* find the interface with a name
181 static struct interface *
185 	struct interface *ifp;
191 			 * for the interface with the target name and address.
199 		/* If there is no known interface, maybe there is a
200 		 * new interface.  So just once look for new interfaces.
209 struct interface *
213 	struct interface *ifp;
221 		/* If there is no known interface, maybe there is a
222 		 * new interface.  So just once look for new interfaces.
232 /* Find an interface from which the specified address
234  * interface a packet came in on.
236 struct interface *
239 	struct interface *ifp, *maybe;
268 		/* If there is no known interface, maybe there is a
269 		 * new interface.  So just once look for new interfaces.
294  *	on the given interface for a given network.
295  *	If no interface is specified, look for the best fitting	interface.
299 	       struct interface *ifp)	/* as seen on this interface */
308 		/* If the target network is that of the associated interface
309 		 * on which it arrived, then use the netmask of the interface.
316 		 * to have the same network number of an interface, use the
317 		 * netmask of that interface.  If there is more than one
318 		 * such interface, prefer the interface with the longest
350 		struct interface *ifp)	/* as seen on this interface */
383 /* See a new interface duplicates an existing interface.
385 struct interface *
391 	struct interface *ifp;
419 check_remote(struct interface *ifp)
446 /* Delete an interface.
449 ifdel(struct interface *ifp)
451 	struct interface *ifp1;
474 		/* delete aliases when the main interface dies
512 		/* Zap all routes associated with this interface.
513 		 * Assume routes just using gateways beyond this interface
526 /* Mark an interface ill.
529 if_sick(struct interface *ifp)
541 /* Mark an interface dead.
544 if_bad(struct interface *ifp)
546 	struct interface *ifp1;
573 /* Mark an interface alive
576 if_ok(struct interface *ifp,
579 	struct interface *ifp1;
659 	struct interface ifs, ifs0, *ifp, *ifp1;
683 	/* Fetch the interface list, without too many system calls
753 		/* Prepare for the next address of this interface, which
873 		/* Use a minimum metric of one.  Treat the interface metric
877 		 * interface addresses is wrong.  It is not set by the
901 		/* See if this is a familiar interface.
925 				 * a changed interface.
927 				trace_act("interface %s has changed",
945 					msglog("interface %s to %s turned off",
952 					trace_act("interface %s has been off"
969 			 * see if the interface is broken.
988 			/* If the interface just awoke, restart the counters.
997 			 * counters wrap or the interface is reset.
1016 					trace_act("interface %s to %s"
1026 					msglog("interface %s to %s broken:"
1043 		/* This is a new interface.
1049 		/* If it duplicates an existing interface,
1094 		ifp = (struct interface *)rtmalloc(sizeof(*ifp), "ifinit ifp");
1186 			trace_act("interface %s has disappeared",
1196 		/* If we ever have a RIPv1 interface, assume we always will.
1273 check_net_syn(struct interface *ifp)
1280 	 * for this interface only if we are running RIPv1 on some other
1281 	 * interface that is on a different class-A,B,or C network.
1315 /* Add route for interface if not currently installed.
1319 static int					/* 0=bad interface */
1320 addrouteforif(struct interface *ifp)
1332 	/* If the interface on a subnet, then install a RIPv1 route to
1356 	/* We are finished if the correct main interface route exists.
1357 	 * The right route must be for the right interface, not synthesized
1378 			trace_act("re-install interface %s",