212 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
289 	struct udphdr *uh;  in udp_input()
347 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
348 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
357 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
374 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
547 				    iphlen + sizeof(struct udphdr),  in udp_input()
581 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
633 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
634 			    len - sizeof(struct udphdr);  in udp_input()
636 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
637 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
651 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
655 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
661 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
666 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
761 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
956 		struct udphdr uh;  in udp_ctlinput()
1633 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1876 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1910 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1912 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2156 				sizeof(struct udphdr) +  in udp_output()
2805 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
2994 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3000 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3017 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
3062 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3068 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3073 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
3082 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
3088 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3102 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3107 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3109 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3123 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3137 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3142 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3147 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()