static void udp_received(struct net_context *context,
struct net_pkt *pkt,
int status,
void *user_data)
{
struct net_pkt *reply_pkt;
struct sockaddr dst_addr;
sa_family_t family = net_pkt_family(pkt);
static char dbg[MAX_DBG_PRINT + 1];
int ret;
snprintf(dbg, MAX_DBG_PRINT, "UDP IPv%c",
family == AF_INET6 ? '6' : '4');
set_dst_addr(family, pkt, &dst_addr);
reply_pkt = build_reply_pkt(dbg, context, pkt);
net_pkt_unref(pkt);
ret = net_context_sendto(reply_pkt, &dst_addr,
family == AF_INET6 ?
sizeof(struct sockaddr_in6) :
sizeof(struct sockaddr_in),
pkt_sent, 0,
UINT_TO_POINTER(net_pkt_get_len(reply_pkt)),
user_data);
if (ret < 0) {
printk("Cannot send data to peer (%d)", ret);
net_pkt_unref(reply_pkt);
}
}
void init_package_head(ap_package_t *pkt, U8 data_type,U8 src_addr, U8 dst_addr, U8 port, U8 ttl, U8 type)
{
memset(pkt, 0, sizeof(ap_package_t));
set_src_addr(pkt, src_addr);
set_dst_addr(pkt, dst_addr);
set_port(pkt, port);
set_ttl(pkt, ttl);//赋值为7
set_type(pkt, type);//type传入参数为0
set_CoS(pkt,data_type);
}
