bsd/netinet6/icmp6.c

281 	int off;
338 	off = ip6_lasthdr(m, 0, IPPROTO_IPV6, &nxt);
339 	if (off >= 0 && nxt == IPPROTO_ICMPV6) {
343 		IP6_EXTHDR_CHECK(m, 0, off + sizeof(struct icmp6_hdr), return);
344 		icp = (struct icmp6_hdr *)(mtod(m, caddr_t) + off);
346 		IP6_EXTHDR_GET(icp, struct icmp6_hdr *, m, off,
437 	int off = *offp;
444 	IP6_EXTHDR_CHECK(m, off, sizeof(struct icmp6_hdr), return IPPROTO_DONE);
492 	icmp6 = (struct icmp6_hdr *)((caddr_t)ip6 + off);
494 	IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off, sizeof(*icmp6));
502 	if ((sum = in6_cksum(m, IPPROTO_ICMPV6, off, icmp6len)) != 0) {
618 		 || n->m_len < off + sizeof(struct icmp6_hdr)) {
661 			m_adj(n0, off + sizeof(struct icmp6_hdr));
667 			IP6_EXTHDR_GET(nicmp6, struct icmp6_hdr *, n, off,
669 			noff = off;
708 			if (mld_input(m, off, icmp6len) == IPPROTO_DONE)
712 		if (mld_input(n, off, icmp6len) != IPPROTO_DONE)
742 		IP6_EXTHDR_CHECK(m, off, sizeof(struct icmp6_nodeinfo),
752 			n = ni6_input(n, off);
781 			nd6_rs_input(m, off, icmp6len);
785 		nd6_rs_input(n, off, icmp6len);
804 			nd6_ra_input(m, off, icmp6len);
808 		nd6_ra_input(n, off, icmp6len);
827 			nd6_ns_input(m, off, icmp6len);
831 		nd6_ns_input(n, off, icmp6len);
850 			nd6_na_input(m, off, icmp6len);
854 		nd6_na_input(n, off, icmp6len);
873 			icmp6_redirect_input(m, off);
877 		icmp6_redirect_input(n, off);
916 		if (icmp6_notify_error(m, off, icmp6len, code)) {
948 icmp6_notify_error(m, off, icmp6len, code)
950 	int off, icmp6len, code;
962 	IP6_EXTHDR_CHECK(m, off,
965 	icmp6 = (struct icmp6_hdr *)(mtod(m, caddr_t) + off);
967 	IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off,
980 		int eoff = off + sizeof(struct icmp6_hdr) +
1115 		icmp6 = (struct icmp6_hdr *)(mtod(m, caddr_t) + off);
1117 		IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off,
1252 ni6_input(m, off)
1254 	int off;
1272 	ni6 = (struct icmp6_nodeinfo *)(mtod(m, caddr_t) + off);
1274 	IP6_EXTHDR_GET(ni6, struct icmp6_nodeinfo *, m, off, sizeof(*ni6));
1333 	subjlen = m->m_pkthdr.len - off - sizeof(struct icmp6_nodeinfo);
1381 			m_copydata(m, off + sizeof(struct icmp6_nodeinfo),
1426 			    off + sizeof(struct icmp6_nodeinfo), subjlen);
2053 icmp6_rip6_input(mp, off)
2055 	int	off;
2068 	icmp6 = (struct icmp6_hdr *)((caddr_t)ip6 + off);
2070 	IP6_EXTHDR_GET(icmp6, struct icmp6_hdr *, m, off, sizeof(*icmp6));
2120 				m_adj(n, off);
2142 		m_adj(m, off);
2167 icmp6_reflect(m, off)
2169 	size_t off;
2190 	if (off < sizeof(struct ip6_hdr)) {
2192 		    "sanity fail: off=%lx, sizeof(ip6)=%lx in %s:%d\n",
2193 		    (u_int32_t)off, (u_int32_t)sizeof(struct ip6_hdr),
2200 	 * off that header first.
2206 	if (off > sizeof(struct ip6_hdr)) {
2210 		l = off - sizeof(struct ip6_hdr);
2219 	} else /* off == sizeof(struct ip6_hdr) */ {
2399 icmp6_redirect_input(m, off)
2401 	int off;
2432 	IP6_EXTHDR_CHECK(m, off, icmp6len, return);
2433 	nd_rd = (struct nd_redirect *)((caddr_t)ip6 + off);
2435 	IP6_EXTHDR_GET(nd_rd, struct nd_redirect *, m, off, icmp6len);