213 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
290 	struct udphdr *uh;  in udp_input()
349 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
350 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
359 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
377 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
553 				    iphlen + sizeof(struct udphdr),  in udp_input()
587 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
640 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
641 			    len - sizeof(struct udphdr);  in udp_input()
643 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
644 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
658 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
662 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
668 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
673 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
778 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
976 		struct udphdr uh;  in udp_ctlinput()
1654 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1908 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1942 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1944 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2194 				sizeof(struct udphdr) +  in udp_output()
2846 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
3035 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3041 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3058 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
3103 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3109 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3114 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
3123 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
3129 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3143 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3148 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3150 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3164 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3178 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3183 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3188 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()