212 static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
287 	struct udphdr *uh;  in udp_input()
348 	if (m->m_len < iphlen + sizeof(struct udphdr)) {  in udp_input()
349 		m = m_pullup(m, iphlen + sizeof(struct udphdr));  in udp_input()
358 	uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
375 		if (len > ip->ip_len || len < sizeof(struct udphdr)) {  in udp_input()
548 				    iphlen + sizeof(struct udphdr),  in udp_input()
582 			uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
630 			int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :  in udp_input()
631 			    len - sizeof(struct udphdr);  in udp_input()
633 			if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {  in udp_input()
634 				if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +  in udp_input()
648 				uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);  in udp_input()
652 			    ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {  in udp_input()
658 			    ((caddr_t)uh + sizeof(struct udphdr)) != 0) {  in udp_input()
663 				esp4_input(m, iphlen + sizeof(struct udphdr));  in udp_input()
758 	m_adj(m, iphlen + sizeof(struct udphdr));  in udp_input()
954 		struct udphdr uh;  in udp_ctlinput()
1617 	    (htons((u_short)len + sizeof(struct udphdr))));  in udp_output()
1855 	ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));  in udp_output()
1889 		    htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));  in udp_output()
1891 		m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);  in udp_output()
2139 				sizeof(struct udphdr) +  in udp_output()
2775 udp_input_checksum(struct mbuf *m, struct udphdr *uh, int off, int ulen)  in udp_input_checksum()
2964 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2970 			if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
2987 			struct udphdr *udp;  in udp_fill_keepalive_offload_frames()
3032 			udp->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3038 				    htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3043 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()
3052 			struct udphdr *udp6;  in udp_fill_keepalive_offload_frames()
3058 			    sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3072 			bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3077 			    sizeof(struct udphdr);  in udp_fill_keepalive_offload_frames()
3079 			    sizeof(struct udphdr));  in udp_fill_keepalive_offload_frames()
3093 			ip6->ip6_plen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3107 			udp6->uh_ulen = htons(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3112 				    htonl(sizeof(struct udphdr) +  in udp_fill_keepalive_offload_frames()
3117 				m->m_pkthdr.csum_data = offsetof(struct udphdr,  in udp_fill_keepalive_offload_frames()