bsd/netinet/ip_input.c

96 #include <net/route.h>
326  * to an incoming packet over the same route if the packet got here
336 	struct	in_addr route[MAX_IPOPTLEN/sizeof(struct in_addr)];
355 static void ip_fwd_route_copyout(struct ifnet *, struct route *);
356 static void ip_fwd_route_copyin(struct ifnet *, struct route *);
844 	 * Naively assume we can attribute inbound data to the route we would
850 	 * protocol is tcp in the future because tcp will have a route that
1908 				 * End of source route.  Should be for us.
1925 					    "attempted source route from %s to %s\n",
2111 	struct route ro;
2133  * Save incoming source route for use in replies,
2154  * Retrieve incoming source route for use in replies,
2181 	 * First save first hop for return route
2183 	p = &ip_srcrt.route[ip_nhops - 1];
2201 	 * Record return path as an IP source route,
2204 	while (p >= ip_srcrt.route) {
2291  * out the cached IPv4 forwarding route from struct ifnet instead of the
2295 ip_fwd_route_copyout(struct ifnet *ifp, struct route *dst)
2297 	struct route *src = &ifp->if_fwd_route;
2304 		panic("%s: wrong or corrupted route: %p", __func__, src);
2312 ip_fwd_route_copyin(struct ifnet *ifp, struct route *src)
2314 	struct route *dst = &ifp->if_fwd_route;
2321 		panic("%s: wrong or corrupted route: %p", __func__, src);
2341  * via a source route.
2352 	struct route fwd_rt;
2459 	 * Also, don't send redirect if forwarding using a default route
2460 	 * or a route modified by a redirect.
2514 	/* Refresh rt since the route could have changed while in IP */
2575 			struct route *ro;
2596 				 * find the correct route for outer IPv4