1 // SPDX-License-Identifier: GPL-2.0
16 #include <time.h>
63 		if (ret == -1 && (errno == ETIMEDOUT || errno == EAGAIN))  in recv_validate_udp()
66 			if (ret != -1)  in recv_validate_udp()
73 	if (ret == -1)  in recv_validate_udp()
89 			sum -= 0xffff;  in raw_checksum()
95 			sum -= 0xffff;  in raw_checksum()
106 	sum = raw_checksum((uint8_t *)&iphdr->ip_src, 2 * sizeof(iphdr->ip_src),  in udp_checksum()
122 	sum = raw_checksum((uint8_t *)&iphdr->ip6_src, 2 * sizeof(iphdr->ip6_src),  in udp6_checksum()
124 	sum = raw_checksum((uint8_t *)&udphdr->len, sizeof(udphdr->len), sum);  in udp6_checksum()
139 	int payload_offset = offset > 0 ? offset - UDP_HLEN : 0;  in send_fragment()
159 		if (payload_len - payload_offset <= max_frag_len && offset > 0) {  in send_fragment()
161 			frag_len = FRAG_HLEN + payload_len - payload_offset;  in send_fragment()
162 			fraghdr->ip6f_offlg = htons(offset);  in send_fragment()
165 			fraghdr->ip6f_offlg = htons(offset | IP6_MF);  in send_fragment()
167 		ip6hdr->ip6_plen = htons(frag_len);  in send_fragment()
170 				frag_len - FRAG_HLEN - UDP_HLEN);  in send_fragment()
173 				frag_len - FRAG_HLEN);  in send_fragment()
177 		if (payload_len - payload_offset <= max_frag_len && offset > 0) {  in send_fragment()
179 			frag_len = IP4_HLEN + payload_len - payload_offset;  in send_fragment()
180 			iphdr->ip_off = htons(offset / 8);  in send_fragment()
183 			iphdr->ip_off = htons(offset / 8 | IP4_MF);  in send_fragment()
185 		iphdr->ip_len = htons(frag_len);  in send_fragment()
188 				frag_len - IP4_HLEN - UDP_HLEN);  in send_fragment()
191 				frag_len - IP4_HLEN);  in send_fragment()
221 		((struct sockaddr_in6 *)addr)->sin6_port = 0;  in send_udp_frags()
223 		ip6hdr->ip6_flow = htonl(6<<28);  /* Version. */  in send_udp_frags()
224 		ip6hdr->ip6_nxt = IPPROTO_FRAGMENT;  in send_udp_frags()
225 		ip6hdr->ip6_hops = 255;  in send_udp_frags()
226 		ip6hdr->ip6_src = addr6;  in send_udp_frags()
227 		ip6hdr->ip6_dst = addr6;  in send_udp_frags()
228 		fraghdr->ip6f_nxt = IPPROTO_UDP;  in send_udp_frags()
229 		fraghdr->ip6f_reserved = 0;  in send_udp_frags()
230 		fraghdr->ip6f_ident = htonl(ip_id++);  in send_udp_frags()
233 		iphdr->ip_hl = 5;  in send_udp_frags()
234 		iphdr->ip_v = 4;  in send_udp_frags()
235 		iphdr->ip_tos = 0;  in send_udp_frags()
236 		iphdr->ip_id = htons(ip_id++);  in send_udp_frags()
237 		iphdr->ip_ttl = 0x40;  in send_udp_frags()
238 		iphdr->ip_p = IPPROTO_UDP;  in send_udp_frags()
239 		iphdr->ip_src.s_addr = htonl(INADDR_LOOPBACK);  in send_udp_frags()
240 		iphdr->ip_dst = addr4;  in send_udp_frags()
241 		iphdr->ip_sum = 0;  in send_udp_frags()
244 	/* Occasionally test in-order fragments. */  in send_udp_frags()
292 		 * hard-code offset and frag_len.  in send_udp_frags()
307 			fraghdr->ip6f_offlg = htons(offset / 8 | IP6_MF);  in send_udp_frags()
308 			ip6hdr->ip6_plen = htons(frag_len);  in send_udp_frags()
312 			iphdr->ip_off = htons(offset / 8 | IP4_MF);  in send_udp_frags()
313 			iphdr->ip_len = htons(frag_len);  in send_udp_frags()
317 			error(1, errno, "sendto overlap: %d", frag_len);  in send_udp_frags()
319 			error(1, 0, "sendto overlap: %d vs %d", (int)res, frag_len);  in send_udp_frags()
350 	fd_tx_raw = socket(addr->sa_family, SOCK_RAW, IPPROTO_RAW);  in run_test()
351 	if (fd_tx_raw == -1)  in run_test()
354 	fd_rx_udp = socket(addr->sa_family, SOCK_DGRAM, 0);  in run_test()
355 	if (fd_rx_udp == -1)  in run_test()
371 			 * is not enough test time to run a nested loop:  in run_test()
372 			 * the full overlap test takes 20-30 seconds.  in run_test()
375 				rand() % (1500 - FRAG_HLEN - min_frag_len);  in run_test()
380 			 * send/receive pair below) takes very little time to  in run_test()
382 			 * with a nested loop: the full non-overlap test takes  in run_test()
390 			} while (max_frag_len < (1500 - FRAG_HLEN) &&  in run_test()
435 	while ((c = getopt(argc, argv, "46opv")) != -1) {  in parse_opts()
461 	seed = time(NULL);  in main()