210 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
285 	struct udphdr *uh;  in udp_input()
342 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
343 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
352 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
369 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
542 				    iphlen + sizeof(struct udphdr),  in udp_input()
576 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
624 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
625 			    len - sizeof(struct udphdr);  in udp_input()
627 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
628 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
642 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
646 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
652 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
657 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
752 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
927 		struct udphdr uh;  in udp_ctlinput()
1590 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1828 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1862 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1864 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2105 				sizeof(struct udphdr) +  in udp_output()
2738 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
2927 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2933 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2950 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
2995 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3001 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3006 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
3015 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
3021 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3035 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3040 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3042 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3056 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3070 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3075 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3080 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()