206 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
277 	struct udphdr *uh;  in udp_input()
334 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
335 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
344 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
361 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
534 				    iphlen + sizeof(struct udphdr),  in udp_input()
568 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
616 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
617 			    len - sizeof(struct udphdr);  in udp_input()
619 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
620 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
634 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
638 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
644 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
649 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
744 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
919 		struct udphdr uh;  in udp_ctlinput()
1582 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1817 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1851 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1853 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2094 				sizeof(struct udphdr) +  in udp_output()
2718 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
2907 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2913 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2930 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
2975 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2981 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2986 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
2995 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
3001 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3015 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3020 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3022 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3036 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3050 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3055 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3060 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()