Пример #1
0
/*
 * Check for alternatives when higher level complains
 * about service problems.  For now, invalidate cached
 * routing information.  If the route was created dynamically
 * (by a redirect), time to try a default gateway again.
 */
void
in6_losing(struct in6pcb *in6p)
{
	struct rtentry *rt;
	struct rt_addrinfo info;

	if (in6p->in6p_af != AF_INET6)
		return;

	if ((rt = rtcache_validate(&in6p->in6p_route)) == NULL)
		return;

	memset(&info, 0, sizeof(info));
	info.rti_info[RTAX_DST] = rtcache_getdst(&in6p->in6p_route);
	info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
	info.rti_info[RTAX_NETMASK] = rt_mask(rt);
	rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0);
	if (rt->rt_flags & RTF_DYNAMIC) {
		(void)rtrequest(RTM_DELETE, rt_getkey(rt),
		    rt->rt_gateway, rt_mask(rt), rt->rt_flags, NULL);
	}
	/*
	 * A new route can be allocated
	 * the next time output is attempted.
	 */
	rtcache_free(&in6p->in6p_route);
}
Пример #2
0
static int
nfs_boot_delroute(struct rtentry *rt, void *w)
{
	int error;

	if ((void *)rt->rt_ifp != w)
		return 0;

	error = rtrequest(RTM_DELETE, rt_getkey(rt), NULL, rt_mask(rt), 0,
	    NULL);
	if (error != 0)
		printf("%s: del route, error=%d\n", __func__, error);

	return 0;
}
Пример #3
0
void
atm_rtrequest(int req, struct rtentry *rt, const struct rt_addrinfo *info)
{
	struct sockaddr *gate = rt->rt_gateway;
	struct atm_pseudoioctl api;
#ifdef NATM
	const struct sockaddr_in *sin;
	struct natmpcb *npcb = NULL;
	const struct atm_pseudohdr *aph;
#endif
	const struct ifnet *ifp = rt->rt_ifp;
	uint8_t namelen = strlen(ifp->if_xname);
	uint8_t addrlen = ifp->if_addrlen;

	if (rt->rt_flags & RTF_GATEWAY)   /* link level requests only */
		return;

	switch (req) {

	case RTM_RESOLVE: /* resolve: only happens when cloning */
		printf("atm_rtrequest: RTM_RESOLVE request detected?\n");
		break;

	case RTM_ADD:

		/*
		 * route added by a command (e.g. ifconfig, route, arp...).
		 *
		 * first check to see if this is not a host route, in which
		 * case we are being called via "ifconfig" to set the address.
		 */

		if ((rt->rt_flags & RTF_HOST) == 0) {
			union {
				struct sockaddr sa;
				struct sockaddr_dl sdl;
				struct sockaddr_storage ss;
			} u;

			sockaddr_dl_init(&u.sdl, sizeof(u.ss),
			    ifp->if_index, ifp->if_type,
			    NULL, namelen, NULL, addrlen);
			rt_setgate(rt, &u.sa);
			gate = rt->rt_gateway;
			break;
		}

		if ((rt->rt_flags & RTF_CLONING) != 0) {
			printf("atm_rtrequest: cloning route detected?\n");
			break;
		}
		if (gate->sa_family != AF_LINK ||
		    gate->sa_len < sockaddr_dl_measure(namelen, addrlen)) {
			log(LOG_DEBUG, "atm_rtrequest: bad gateway value\n");
			break;
		}

#ifdef DIAGNOSTIC
		if (rt->rt_ifp->if_ioctl == NULL) panic("atm null ioctl");
#endif

#ifdef NATM
		/*
		 * let native ATM know we are using this VCI/VPI
		 * (i.e. reserve it)
		 */
		sin = satocsin(rt_getkey(rt));
		if (sin->sin_family != AF_INET)
			goto failed;
		aph = (const struct atm_pseudohdr *)CLLADDR(satosdl(gate));
		npcb = npcb_add(NULL, rt->rt_ifp, ATM_PH_VCI(aph),
						ATM_PH_VPI(aph));
		if (npcb == NULL)
			goto failed;
		npcb->npcb_flags |= NPCB_IP;
		npcb->ipaddr.s_addr = sin->sin_addr.s_addr;
		/* XXX: move npcb to llinfo when ATM ARP is ready */
		rt->rt_llinfo = (void *) npcb;
		rt->rt_flags |= RTF_LLINFO;
#endif
		/*
		 * let the lower level know this circuit is active
		 */
		memcpy(&api.aph, CLLADDR(satocsdl(gate)), sizeof(api.aph));
		api.rxhand = NULL;
		if (rt->rt_ifp->if_ioctl(rt->rt_ifp, SIOCATMENA, &api) != 0) {
			printf("atm: couldn't add VC\n");
			goto failed;
		}

		satosdl(gate)->sdl_type = rt->rt_ifp->if_type;
		satosdl(gate)->sdl_index = rt->rt_ifp->if_index;

		break;

failed:
#ifdef NATM
		if (npcb) {
			npcb_free(npcb, NPCB_DESTROY);
			rt->rt_llinfo = NULL;
			rt->rt_flags &= ~RTF_LLINFO;
		}
#endif
		rtrequest(RTM_DELETE, rt_getkey(rt), NULL,
			rt_mask(rt), 0, NULL);
		break;

	case RTM_DELETE:

#ifdef NATM
		/*
		 * tell native ATM we are done with this VC
		 */

		if (rt->rt_flags & RTF_LLINFO) {
			npcb_free((struct natmpcb *)rt->rt_llinfo,
								NPCB_DESTROY);
			rt->rt_llinfo = NULL;
			rt->rt_flags &= ~RTF_LLINFO;
		}
#endif
		/*
		 * tell the lower layer to disable this circuit
		 */

		memcpy(&api.aph, CLLADDR(satocsdl(gate)), sizeof(api.aph));
		api.rxhand = NULL;
		(void)rt->rt_ifp->if_ioctl(rt->rt_ifp, SIOCATMDIS, &api);

		break;
	}
}