bsd/netinet6/ah_input.c

130 ah4_input(struct mbuf *m, int off)
146 	if (m->m_len < off + sizeof(struct newah)) {
147 		m = m_pullup(m, off + sizeof(struct newah));
160 	ah = (struct ah *)(void *)(((caddr_t)ip) + off);
166 	IP6_EXTHDR_GET(ah, struct ah *, m, off, sizeof(struct newah));
263 	if (m->m_len < off + sizeof(struct ah) + sizoff + siz1) {
264 		m = m_pullup(m, off + sizeof(struct ah) + sizoff + siz1);
274 		ah = (struct ah *)(void *)(((caddr_t)ip) + off);
277 	IP6_EXTHDR_GET(ah, struct ah *, m, off,
369 		if (m->m_len < off + sizeof(struct ah) + sizoff + siz1 + hlen) {
370 			m = m_pullup(m, off + sizeof(struct ah)
428 	if (ipsec4_tunnel_validate(m, off + stripsiz, nxt, sav, &ifamily)) {
433 		 * strip off all the headers that precedes AH.
447 		m_adj(m, off + stripsiz);
519 		 * strip off AH.
528 		ovbcopy((caddr_t)ip, (caddr_t)(((u_char *)ip) + stripsiz), off);
534 		 * even in m_pulldown case, we need to strip off AH so that
537 		if (m->m_len >= stripsiz + off) {
538 			ovbcopy((caddr_t)ip, ((caddr_t)ip) + stripsiz, off);
549 			n = m_split(m, off, M_DONTWAIT);
593 			ip_proto_dispatch_in(m, off, nxt, 0);
625 	int off = *offp;
639 	IP6_EXTHDR_CHECK(m, off, sizeof(struct ah), {return IPPROTO_DONE;});
640 	ah = (struct ah *)(void *)(mtod(m, caddr_t) + off);
642 	IP6_EXTHDR_GET(ah, struct ah *, m, off, sizeof(struct newah));
726 	IP6_EXTHDR_CHECK(m, off, sizeof(struct ah) + sizoff + siz1,
729 	IP6_EXTHDR_GET(ah, struct ah *, m, off,
812 		IP6_EXTHDR_CHECK(m, off, sizeof(struct ah) + sizoff + siz1
864 	if (ipsec6_tunnel_validate(m, off + stripsiz, nxt, sav)) {
869 		 * strip off all the headers that precedes AH.
878 		m_adj(m, off + stripsiz);
941 		 * strip off AH.
948 		 * This is necessary because AH will be stripped off below.
950 		prvnxtp = ip6_get_prevhdr(m, off); /* XXX */
959 		ovbcopy((caddr_t)ip6, ((caddr_t)ip6) + stripsiz, off);
965 		 * even in m_pulldown case, we need to strip off AH so that
968 		if (m->m_len >= stripsiz + off) {
969 			ovbcopy((caddr_t)ip6, ((caddr_t)ip6) + stripsiz, off);
980 			n = m_split(m, off, M_DONTWAIT);
1002 	*offp = off;
1036 	int off;
1050 		off = ip6cp->ip6c_off;
1063 		if (m->m_pkthdr.len < off + sizeof(ah))
1066 		if (m->m_len < off + sizeof(ah)) {
1071 			m_copydata(m, off, sizeof(ah), (caddr_t)&ah);
1074 			ahp = (struct newah *)(void *)(mtod(m, caddr_t) + off);