50 mpls_input(struct ifnet *ifp, struct mbuf *m)  in mpls_input()  argument
61 		m_freem(m);  in mpls_input()
66 	if (m->m_flags & (M_BCAST | M_MCAST)) {  in mpls_input()
67 		m_freem(m);  in mpls_input()
71 	if (m->m_len < sizeof(*shim)) {  in mpls_input()
72 		m = m_pullup(m, sizeof(*shim));  in mpls_input()
73 		if (m == NULL)  in mpls_input()
77 	shim = mtod(m, struct shim_hdr *);  in mpls_input()
89 		m = mpls_do_error(m, ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS, 0);  in mpls_input()
90 		if (m == NULL)  in mpls_input()
93 		shim = mtod(m, struct shim_hdr *);  in mpls_input()
106 		m = mpls_shim_pop(m);  in mpls_input()
107 		if (m == NULL)  in mpls_input()
117 			shim = mtod(m, struct shim_hdr *);  in mpls_input()
125 					m = mpls_ip_adjttl(m, ttl);  in mpls_input()
126 					if (m == NULL)  in mpls_input()
129 				ipv4_input(ifp, m);  in mpls_input()
135 					m = mpls_ip6_adjttl(m, ttl);  in mpls_input()
136 					if (m == NULL)  in mpls_input()
139 				ipv6_input(ifp, m);  in mpls_input()
143 				if (m->m_len < sizeof(u_char) &&  in mpls_input()
144 				    (m = m_pullup(m, sizeof(u_char))) == NULL)  in mpls_input()
146 				switch (*mtod(m, u_char *) >> 4) {  in mpls_input()
154 					m_freem(m);  in mpls_input()
159 				m_freem(m);  in mpls_input()
167 	rt = rtalloc(smplstosa(smpls), RT_RESOLVE, m->m_pkthdr.ph_rtableid);  in mpls_input()
173 		m_freem(m);  in mpls_input()
182 		m_freem(m);  in mpls_input()
189 			mpls_input_local(rt, m);  in mpls_input()
193 		m = mpls_shim_pop(m);  in mpls_input()
194 		if (m == NULL)  in mpls_input()
203 			m_freem(m);  in mpls_input()
211 			if ((m = mpls_ip_adjttl(m, ttl)) == NULL)  in mpls_input()
216 			if ((m = mpls_ip6_adjttl(m, ttl)) == NULL)  in mpls_input()
223 			m_freem(m);  in mpls_input()
229 			(*ifp->if_output)(ifp, m, rt->rt_gateway, rt);  in mpls_input()
231 			(*ifp->if_ll_output)(ifp, m, rt->rt_gateway, rt);  in mpls_input()
235 		m = mpls_shim_push(m, rt_mpls);  in mpls_input()
238 		m = mpls_shim_swap(m, rt_mpls);  in mpls_input()
241 		m_freem(m);  in mpls_input()
245 	if (m == NULL)  in mpls_input()
249 	shim = mtod(m, struct shim_hdr *);  in mpls_input()
254 		m_freem(m);  in mpls_input()
270 		m_freem(m);  in mpls_input()
274 	(*ifp->if_ll_output)(ifp, m, smplstosa(smpls), rt);  in mpls_input()
281 mpls_input_local(struct rtentry *rt, struct mbuf *m)  in mpls_input_local()  argument
287 		m_freem(m);  in mpls_input_local()
293 		(*ifp->if_output)(ifp, m, rt->rt_gateway, rt);  in mpls_input_local()
295 		(*ifp->if_ll_output)(ifp, m, rt->rt_gateway, rt);  in mpls_input_local()
301 mpls_ip_adjttl(struct mbuf *m, u_int8_t ttl)  in mpls_ip_adjttl()  argument
307 	if (m->m_len < sizeof(*ip)) {  in mpls_ip_adjttl()
308 		m = m_pullup(m, sizeof(*ip));  in mpls_ip_adjttl()
309 		if (m == NULL)  in mpls_ip_adjttl()
312 	ip = mtod(m, struct ip *);  in mpls_ip_adjttl()
322 	return (m);  in mpls_ip_adjttl()
327 mpls_ip6_adjttl(struct mbuf *m, u_int8_t ttl)  in mpls_ip6_adjttl()  argument
331 	if (m->m_len < sizeof(*ip6)) {  in mpls_ip6_adjttl()
332 		m = m_pullup(m, sizeof(*ip6));  in mpls_ip6_adjttl()
333 		if (m == NULL)  in mpls_ip6_adjttl()
336 	ip6 = mtod(m, struct ip6_hdr *);  in mpls_ip6_adjttl()
340 	return (m);  in mpls_ip6_adjttl()
345 mpls_do_error(struct mbuf *m, int type, int code, int destmtu)  in mpls_do_error()  argument
358 		if (m->m_len < sizeof(*shim) &&  in mpls_do_error()
359 		    (m = m_pullup(m, sizeof(*shim))) == NULL)  in mpls_do_error()
361 		stack[nstk] = *mtod(m, struct shim_hdr *);  in mpls_do_error()
362 		m_adj(m, sizeof(*shim));  in mpls_do_error()
368 	if (m->m_len < sizeof(u_char) &&  in mpls_do_error()
369 	    (m = m_pullup(m, sizeof(u_char))) == NULL)  in mpls_do_error()
371 	switch (*mtod(m, u_char *) >> 4) {  in mpls_do_error()
373 		if (m->m_len < sizeof(*ip) &&  in mpls_do_error()
374 		    (m = m_pullup(m, sizeof(*ip))) == NULL)  in mpls_do_error()
376 		m = icmp_do_error(m, type, code, 0, destmtu);  in mpls_do_error()
377 		if (m == NULL)  in mpls_do_error()
380 		if (icmp_do_exthdr(m, ICMP_EXT_MPLS, 1, stack,  in mpls_do_error()
395 			m_freem(m);  in mpls_do_error()
406 			m_freem(m);  in mpls_do_error()
410 		error = icmp_reflect(m, NULL, ia);  in mpls_do_error()
415 		ip = mtod(m, struct ip *);  in mpls_do_error()
419 		in_hdr_cksum_out(m, NULL);  in mpls_do_error()
422 		icp = (struct icmp *)(mtod(m, caddr_t) + sizeof(*ip));  in mpls_do_error()
424 		icp->icmp_cksum = in4_cksum(m, 0, sizeof(*ip),  in mpls_do_error()
432 		m_freem(m);  in mpls_do_error()
437 	M_PREPEND(m, (nstk + 1) * sizeof(*shim), M_NOWAIT);  in mpls_do_error()
438 	if (m == NULL)  in mpls_do_error()
440 	m_copyback(m, 0, (nstk + 1) * sizeof(*shim), stack, M_NOWAIT);  in mpls_do_error()
443 	shim = mtod(m, struct shim_hdr *);  in mpls_do_error()
447 	return (m);  in mpls_do_error()