206 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
275 	struct udphdr *uh;  in udp_input()
332 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
333 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
342 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
359 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
532 				    iphlen + sizeof(struct udphdr),  in udp_input()
566 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
614 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
615 			    len - sizeof(struct udphdr);  in udp_input()
617 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
618 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
632 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
636 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
642 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
647 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
742 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
917 		struct udphdr uh;  in udp_ctlinput()
1580 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1815 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1849 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1851 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2092 				sizeof(struct udphdr) +  in udp_output()
2716 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
2905 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2911 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2928 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
2973 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2979 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2984 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
2993 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
2999 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3013 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3018 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3020 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3034 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3048 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3053 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3058 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()