bsd/netinet6/esp_input.c

85 #include <netinet/ip.h>
141 static struct ip *
145 	struct ip *ip;
148 	ip = mtod(m, __typeof__(ip));
149 	ovbcopy((caddr_t)ip, (caddr_t)(((u_char *)ip) + stripsiz), iphlen);
153 	ip = mtod(m, __typeof__(ip));
154 	ip->ip_len = ip->ip_len - stripsiz;
155 	ip->ip_p = IPPROTO_ESP;
156 	return ip;
164 	struct ip *ip;
203 	ip = mtod(m, struct ip *);
205 	if (ip->ip_p != IPPROTO_ESP &&
206 	    !(ip->ip_p == IPPROTO_UDP && off >= sizeof(struct udphdr))) {
212 	esp = (struct esp *)(void *)(((u_int8_t *)ip) + off);
214 	hlen = IP_VHL_HL(ip->ip_vhl) << 2;
216 	hlen = ip->ip_hl << 2;
223 	                      (caddr_t)&ip->ip_src, (caddr_t)&ip->ip_dst,
254 		    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
277 		    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
308 		    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
315 		    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
322 	ip = mtod(m, struct ip *);
324 	ip->ip_len = ip->ip_len - siz;
326 	ip->ip_len = htons(ntohs(ip->ip_len) - siz);
413 		    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
420 	ip = mtod(m, struct ip *);
422 	ip->ip_len = ip->ip_len - taillen;
424 	ip->ip_len = htons(ntohs(ip->ip_len) - taillen);
426 	if (ip->ip_p == IPPROTO_UDP) {
427 		// offset includes the outer ip and udp header lengths.
445 			struct udphdr *encap_uh = (__typeof__(encap_uh))(void *)((caddr_t)ip + off);
451 		ip = esp4_input_strip_UDP_encap(m, off);
452 		esp = (struct esp *)(void *)(((u_int8_t *)ip) + off);
480 		tos = ip->ip_tos;
485 			if (m->m_len < sizeof(*ip)) {
486 				m = m_pullup(m, sizeof(*ip));
492 			ip = mtod(m, struct ip *);
494 			ip_ecn_egress(ip4_ipsec_ecn, &tos, &ip->ip_tos);
496 			    (caddr_t)&ip->ip_src, (caddr_t)&ip->ip_dst)) {
499 			    ipsec4_logpacketstr(ip, spi), ipsec_logsastr(sav)));
509 				ipaddr->sin_addr = ip->ip_dst;
541 			//  ip_ecn_egress(ip4_ipsec_ecn, &tos, &ip->ip_tos);
608 		ip = mtod(m, struct ip *);
609 		ovbcopy((caddr_t)ip, (caddr_t)(((u_char *)ip) + stripsiz), off);
614 		ip = mtod(m, struct ip *);
616 		ip->ip_len = ip->ip_len - stripsiz;
618 		ip->ip_len = htons(ntohs(ip->ip_len) - stripsiz);
620 		ip->ip_p = nxt;
664 					ip = mtod(m, struct ip *);
666 				udp = (struct udphdr *)(void *)(((u_int8_t *)ip) + off);
682                         	struct ip *, ip, struct ifnet *, m->m_pkthdr.rcvif,
683                         	struct ip *, ip, struct ip6_hdr *, NULL);