upsilon/software/manual_dhcp.c

43 lines
825 B
C
Raw Normal View History

2022-09-16 18:01:34 -04:00
K_SEM_DEFINE(dhcp_ready, 0, 1);
static bool
check_dhcp(struct net_if *iface)
{
// Scan IP addresses allocated for Unicast
for (int i = 0; i < NET_IF_MAX_IPV4_ADDR; i++) {
if (iface->config.ip.ipv4->unicast[i].addr_type != NET_ADDR_DHCP)
continue;
return true;
}
return false;
}
static void
dhcp_handler(struct net_mgmt_event_callback *cb,
uint32_t ev,
struct net_if *iface)
{
if (ev != NET_EVENT_IPV4_ADDR_ADD)
return;
if (check_dhcp(iface))
k_sem_give(&dhcp_ready);
}
static void
setup_dhcp(void)
{
static struct net_mgmt_event_callback cb;
net_mgmt_init_event_callback(&cb, dhcp_handler, NET_EVENT_IPV4_ADDR_ADD);
net_mgmt_add_event_callback(&cb);
struct net_if *iface = net_if_get_default();
if (!check_dhcp(iface)) {
net_dhcpv4_start(iface);
k_sem_take(&dhcp_ready, K_FOREVER);
}
}