udpiphdr
struct udpiphdr *ui;
ui = (struct udpiphdr *)ip;
struct udpiphdr *ui;
ui = (struct udpiphdr *)ip;
M_PREPEND(m, sizeof(struct udpiphdr), M_NOWAIT);
ui = mtod(m, struct udpiphdr *);
((struct ip *)ui)->ip_len = htons(sizeof(struct udpiphdr) + len);
struct udpiphdr *ui;
if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
conf->pc_datalen > ETHERMTU - sizeof(struct udpiphdr))
ip_len = pktg->pktg_datalen + sizeof(struct udpiphdr);
struct udpiphdr *ui;
ui = mtod(m, struct udpiphdr *);