// something has timed out, handle this
static void dhcp_timeout(struct dhcp_state *state)
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout()\n"));
if ((state->state == DHCP_BACKING_OFF) || (state->state == DHCP_SELECTING))
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): restarting discovery\n"));
dhcp_discover(state);
}
else if (state->state == DHCP_REQUESTING)
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): REQUESTING, DHCP request timed out\n"));
if (state->tries <= 5)
{
dhcp_select(state);
}
else
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): REQUESTING, releasing, restarting\n"));
dhcp_release(state);
dhcp_discover(state);
}
}
else if (state->state == DHCP_CHECKING)
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): CHECKING, ARP request timed out\n"));
if (state->tries <= 1)
{
dhcp_check(state);
}
// no ARP replies on the offered address,
// looks like the IP address is indeed free
else
{
dhcp_bind(state);
}
}
else if (state->state == DHCP_RENEWING)
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): RENEWING, DHCP request timed out\n"));
dhcp_renew(state);
}
else if (state->state == DHCP_REBINDING)
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): REBINDING, DHCP request timed out\n"));
if (state->tries <= 8)
{
dhcp_rebind(state);
}
else
{
DEBUGF(DHCP_DEBUG, ("dhcp_timeout(): REBINDING, release, restart\n"));
dhcp_release(state);
dhcp_discover(state);
}
}
}
void lwip_bringdown(void)
{
// Disconnect from the network
dhcp_release(&lwip_netif);
dhcp_stop(&lwip_netif);
lwip_ip_addr[0] = '\0';
}
void net_shutdown(void) {
printf("Releasing DHCP lease...\n");
dhcp_release(ð);
dhcp_stop(ð);
printf("Shutting down network...\n");
netif_remove(ð);
gelicif_shutdown(ð);
}
//Release the DHCP configuration on a specific layer3 interface.
BOOL lwipReleaseDHCP(LPVOID pL3Interface)
{
struct netif* pif = (struct netif*)pL3Interface;
if (NULL == pif)
{
BUG();
}
dhcp_release(pif);
return TRUE;
}
static void remove_network(gpointer user_data)
{
struct connman_dhcp *dhcp = user_data;
DBG("dhcp %p", dhcp);
dhcp_invalidate(dhcp, FALSE);
dhcp_release(dhcp);
g_free(dhcp);
}
int EthernetInterface::disconnect() {
if (use_dhcp) {
dhcp_release(&lpcNetif);
dhcp_stop(&lpcNetif);
} else {
netif_set_down(&lpcNetif);
}
NVIC_DisableIRQ(ENET_IRQn);
return 0;
}
int EthernetInterface::disconnect() {
if (use_dhcp) {
dhcp_release(&netif);
dhcp_stop(&netif);
} else {
netif_set_down(&netif);
}
eth_arch_disable_interrupts();
return 0;
}
nsapi_error_t mbed_lwip_bringdown_2(bool ppp)
{
// Check if we've connected
if (lwip_connected == NSAPI_STATUS_DISCONNECTED) {
return NSAPI_ERROR_PARAMETER;
}
#if LWIP_DHCP
// Disconnect from the network
if (lwip_dhcp) {
dhcp_release(&lwip_netif);
dhcp_stop(&lwip_netif);
lwip_dhcp = false;
lwip_dhcp_has_to_be_set = false;
}
#endif
if (ppp) {
/* this is a blocking call, returns when PPP is properly closed */
err_t err = ppp_lwip_disconnect();
if (err) {
return mbed_lwip_err_remap(err);
}
MBED_ASSERT(!netif_is_link_up(&lwip_netif));
/*if (netif_is_link_up(&lwip_netif)) {
if (sys_arch_sem_wait(&lwip_netif_unlinked, 15000) == SYS_ARCH_TIMEOUT) {
return NSAPI_ERROR_DEVICE_ERROR;
}
}*/
} else {
netif_set_down(&lwip_netif);
}
#if LWIP_IPV6
mbed_lwip_clear_ipv6_addresses(&lwip_netif);
#endif
sys_sem_free(&lwip_netif_has_any_addr);
sys_sem_new(&lwip_netif_has_any_addr, 0);
#if PREF_ADDR_TIMEOUT
sys_sem_free(&lwip_netif_has_pref_addr);
sys_sem_new(&lwip_netif_has_pref_addr, 0);
#endif
#if BOTH_ADDR_TIMEOUT
sys_sem_free(&lwip_netif_has_both_addr);
sys_sem_new(&lwip_netif_has_both_addr, 0);
#endif
lwip_has_addr_state = 0;
lwip_connected = NSAPI_STATUS_DISCONNECTED;
return 0;
}
int lwip_bringdown(void)
{
// Check if we've connected
if (!lwip_get_ip_address()) {
return NSAPI_ERROR_PARAMETER;
}
// Disconnect from the network
dhcp_release(&lwip_netif);
dhcp_stop(&lwip_netif);
lwip_ip_addr[0] = '\0';
return 0;
}
mp_obj_t mod_network_nic_ifconfig(struct netif *netif, size_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
// Get IP addresses
const ip_addr_t *dns = dns_getserver(0);
mp_obj_t tuple[4] = {
netutils_format_ipv4_addr((uint8_t*)&netif->ip_addr, NETUTILS_BIG),
netutils_format_ipv4_addr((uint8_t*)&netif->netmask, NETUTILS_BIG),
netutils_format_ipv4_addr((uint8_t*)&netif->gw, NETUTILS_BIG),
netutils_format_ipv4_addr((uint8_t*)dns, NETUTILS_BIG),
};
return mp_obj_new_tuple(4, tuple);
} else if (args[0] == MP_OBJ_NEW_QSTR(MP_QSTR_dhcp)) {
// Start the DHCP client
if (dhcp_supplied_address(netif)) {
dhcp_renew(netif);
} else {
dhcp_stop(netif);
dhcp_start(netif);
}
// Wait for DHCP to get IP address
uint32_t start = mp_hal_ticks_ms();
while (!dhcp_supplied_address(netif)) {
if (mp_hal_ticks_ms() - start > 10000) {
mp_raise_msg(&mp_type_OSError, "timeout waiting for DHCP to get IP address");
}
mp_hal_delay_ms(100);
}
return mp_const_none;
} else {
// Release and stop any existing DHCP
dhcp_release(netif);
dhcp_stop(netif);
// Set static IP addresses
mp_obj_t *items;
mp_obj_get_array_fixed_n(args[0], 4, &items);
netutils_parse_ipv4_addr(items[0], (uint8_t*)&netif->ip_addr, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[1], (uint8_t*)&netif->netmask, NETUTILS_BIG);
netutils_parse_ipv4_addr(items[2], (uint8_t*)&netif->gw, NETUTILS_BIG);
ip_addr_t dns;
netutils_parse_ipv4_addr(items[3], (uint8_t*)&dns, NETUTILS_BIG);
dns_setserver(0, &dns);
return mp_const_none;
}
}
static void
wl_cm_disconn_cb(void* ctx)
{
struct ctx_server* hs = ctx;
LINK_LED_OFF();
INFO_INIT("Disconnection cb...\n");
if (hs->net_cfg.dhcp_running) {
printk("link down, release dhcp\n");
dhcp_release(hs->net_cfg.netif);
dhcp_stop(hs->net_cfg.netif);
hs->net_cfg.dhcp_running = 0;
} else {
printk("link down\n");
netif_set_down(hs->net_cfg.netif);
}
set_result_cmd(WL_FAILURE);
}
/**
* @brief Stop lwip service in a certain operation mode.
* @param[in] uint8_t opmode: the current operation mode.
* @retval None
*/
void lwip_net_stop(uint8_t opmode)
{
struct netif *sta_if;
struct netif *ap_if;
sta_if = netif_find_by_type(NETIF_TYPE_STA);
ap_if = netif_find_by_type(NETIF_TYPE_AP);
switch (opmode) {
case WIFI_MODE_AP_ONLY:
dhcpd_stop();
netif_set_link_down(ap_if);
break;
case WIFI_MODE_STA_ONLY:
case WIFI_MODE_REPEATER:
netif_set_status_callback(sta_if, NULL);
dhcp_release(sta_if);
dhcp_stop(sta_if);
netif_set_link_down(sta_if);
break;
}
}
nsapi_error_t mbed_lwip_bringdown(void)
{
// Check if we've connected
if (!lwip_connected) {
return NSAPI_ERROR_PARAMETER;
}
#if LWIP_IPV4
// Disconnect from the network
if (lwip_dhcp) {
dhcp_release(&lwip_netif);
dhcp_stop(&lwip_netif);
lwip_dhcp = false;
} else {
netif_set_down(&lwip_netif);
}
#endif
lwip_connected = false;
// TO DO - actually remove addresses from stack, and shut down properly
return 0;
}
static void LwipInitTask(void* pvArguments) {
err_t err;
struct netif fsl_netif0;
ip_addr_t fsl_netif0_ipaddr, fsl_netif0_netmask, fsl_netif0_gw;
char msg[] = "This is my message";
(void)pvArguments;
// Init lwip stack
tcpip_init(NULL,NULL);
printf("%s: lwip init called ..\n", __FUNCTION__);
// Setup IP Config for DHCP ...
IP4_ADDR(&fsl_netif0_ipaddr, 0,0,0,0);
IP4_ADDR(&fsl_netif0_netmask, 0,0,0,0);
IP4_ADDR(&fsl_netif0_gw, 0,0,0,0);
/* Add a network interface to the list of lwIP netifs. */
netif_add(&fsl_netif0, &fsl_netif0_ipaddr, &fsl_netif0_netmask, &fsl_netif0_gw, NULL, ethernetif_init, ethernet_input);
/* Set the network interface as the default network interface. */
netif_set_default(&fsl_netif0);
/* obtain the IP address, default gateway and subnet mask by using DHCP*/
err = dhcp_start(&fsl_netif0);
printf("%s : Started DCHP request (%s)\n", __FUNCTION__, lwip_strerr(err));
for(int i=0; i < DHCP_TIMEOUT && fsl_netif0.dhcp->state != DHCP_BOUND; i++) {
printf("%s : Current DHCP State : %d\n", __FUNCTION__, fsl_netif0.dhcp->state);
// Wait a second
vTaskDelay(1000/portTICK_PERIOD_MS);
}
// Make it active ...
netif_set_up(&fsl_netif0);
printf("%s : Interface is up : %d\n", __FUNCTION__, fsl_netif0.dhcp->state);
printf("%s : IP %s\n", __FUNCTION__, ipaddr_ntoa(&fsl_netif0.ip_addr));
printf("%s : NM %s\n", __FUNCTION__, ipaddr_ntoa(&fsl_netif0.netmask));
printf("%s : GW %s\n", __FUNCTION__, ipaddr_ntoa(&fsl_netif0.gw));
if (fsl_netif0.dhcp->state == DHCP_BOUND) {
// Send out some UDP data
struct netconn* pConnection;
// Create UDP connection
pConnection = netconn_new(NETCONN_UDP);
// Connect to local port
err = netconn_bind(pConnection, IP_ADDR_ANY, 12345);
printf("%s : Bound to IP_ADDR_ANY port 12345 (%s)\n", __FUNCTION__, lwip_strerr(err));
err = netconn_connect(pConnection, IP_ADDR_BROADCAST, 12346 );
printf("%s : Connected to IP_ADDR_BROADCAST port 12346 (%s)\n", __FUNCTION__, lwip_strerr(err));
for(int i = 0; i < 10; i++ ){
struct netbuf* buf = netbuf_new();
void* data = netbuf_alloc(buf, sizeof(msg));
memcpy (data, msg, sizeof (msg));
err = netconn_send(pConnection, buf);
printf("%s : Sending to IP_ADDR_BROADCAST port 12346 (%s)\n", __FUNCTION__, lwip_strerr(err));
netbuf_delete(buf); // De-allocate packet buffer
// Wait a second
vTaskDelay(1000/portTICK_PERIOD_MS);
}
err = netconn_disconnect(pConnection);
printf("%s : Disconnected from IP_ADDR_BROADCAST port 12346 (%s)\n", __FUNCTION__, lwip_strerr(err));
err = netconn_delete(pConnection);
printf("%s : Deleted connection (%s)\n", __FUNCTION__, lwip_strerr(err));
}
// Wait a second
vTaskDelay(1000/portTICK_PERIOD_MS);
/* finish the lease of the IP address */
err = dhcp_release(&fsl_netif0);
printf("%s : DHCP Release (%s)\n", __FUNCTION__, lwip_strerr(err));
for(;;) {};
}
void dhcp_close(void)
{
dhcp_release(&Dhcp);
}
nsapi_error_t LWIP::Interface::bringdown()
{
// Check if we've connected
if (connected == NSAPI_STATUS_DISCONNECTED) {
return NSAPI_ERROR_NO_CONNECTION;
}
#if LWIP_DHCP
// Disconnect from the network
if (dhcp_started) {
dhcp_release(&netif);
dhcp_stop(&netif);
dhcp_started = false;
dhcp_has_to_be_set = false;
}
#endif
if (ppp) {
/* this is a blocking call, returns when PPP is properly closed */
err_t err = ppp_lwip_disconnect(hw);
if (err) {
return err_remap(err);
}
MBED_ASSERT(!netif_is_link_up(&netif));
/*if (netif_is_link_up(&netif)) {
if (sys_arch_sem_wait(&unlinked, 15000) == SYS_ARCH_TIMEOUT) {
return NSAPI_ERROR_DEVICE_ERROR;
}
}*/
} else {
netif_set_down(&netif);
}
#if LWIP_IPV6
mbed_lwip_clear_ipv6_addresses(&netif);
#endif
#if LWIP_IPV4
ip_addr_set_zero(&(netif.ip_addr));
ip_addr_set_zero(&(netif.netmask));
ip_addr_set_zero(&(netif.gw));
#endif
osSemaphoreDelete(has_any_addr);
osSemaphoreAttr_t attr;
attr.name = NULL;
attr.attr_bits = 0;
attr.cb_mem = &has_any_addr_sem;
attr.cb_size = sizeof has_any_addr_sem;
has_any_addr = osSemaphoreNew(UINT16_MAX, 0, &attr);
#if PREF_ADDR_TIMEOUT
osSemaphoreDelete(has_pref_addr);
attr.cb_mem = &has_pref_addr_sem;
attr.cb_size = sizeof has_pref_addr_sem;
has_pref_addr = osSemaphoreNew(UINT16_MAX, 0, &attr);
#endif
#if BOTH_ADDR_TIMEOUT
osSemaphoreDelete(has_both_addr);
attr.cb_mem = &has_both_addr_sem;
attr.cb_size = sizeof has_both_addr_sem;
has_both_addr = osSemaphoreNew(UINT16_MAX, 0, &attr);
#endif
has_addr_state = 0;
connected = NSAPI_STATUS_DISCONNECTED;
if (client_callback) {
client_callback(NSAPI_EVENT_CONNECTION_STATUS_CHANGE, connected);
}
return 0;
}
int main(void)
{
NetbootParam *param;
// Initialize some consoles.
serial_console_init();
cbmem_console_init();
video_console_init();
input_init();
printf("\n\nStarting netboot on " CONFIG_BOARD "...\n");
timestamp_init();
if (run_init_funcs())
halt();
// Make sure graphics are available if they aren't already.
enable_graphics();
dc_usb_initialize();
srand(timer_raw_value());
printf("Looking for network device... ");
while (!net_get_device())
usb_poll();
printf("done.\n");
printf("Waiting for link... ");
int ready = 0;
while (!ready) {
if (net_ready(&ready))
halt();
}
mdelay(200); // some dongles need more time than they think
printf("done.\n");
// Start up the network stack.
uip_init();
// Plug in the MAC address.
const uip_eth_addr *mac_addr = net_get_mac();
if (!mac_addr)
halt();
printf("MAC: ");
print_mac_addr(mac_addr);
printf("\n");
uip_setethaddr(*mac_addr);
// Find out who we are.
uip_ipaddr_t my_ip, next_ip, server_ip;
const char *dhcp_bootfile;
while (dhcp_request(&next_ip, &server_ip, &dhcp_bootfile))
printf("Dhcp failed, retrying.\n");
printf("My ip is ");
uip_gethostaddr(&my_ip);
print_ip_addr(&my_ip);
printf("\nThe DHCP server ip is ");
print_ip_addr(&server_ip);
printf("\n");
// Retrieve settings from the shared data area.
FmapArea shared_data;
if (fmap_find_area("SHARED_DATA", &shared_data)) {
printf("Couldn't find the shared data area.\n");
halt();
}
void *data = flash_read(shared_data.offset, shared_data.size);
netboot_params_init(data, shared_data.size);
// Get TFTP server IP and file name from params with DHCP as fallback
uip_ipaddr_t *tftp_ip = NULL;
param = netboot_params_val(NetbootParamIdTftpServerIp);
if (param->data && param->size >= sizeof(uip_ipaddr_t)) {
tftp_ip = (uip_ipaddr_t *)param->data;
printf("TFTP server IP set from firmware parameters: ");
} else {
tftp_ip = &next_ip;
printf("TFTP server IP supplied by DHCP server: ");
}
print_ip_addr(tftp_ip);
printf("\n");
const char *bootfile = NULL;
param = netboot_params_val(NetbootParamIdBootfile);
if (param->data && param->size > 0 && strnlen((const char *)param->data,
param->size) < param->size) {
bootfile = (const char *)param->data;
printf("Bootfile set from firmware parameters: %s\n", bootfile);
} else {
bootfile = dhcp_bootfile;
printf("Bootfile supplied by DHCP server: %s\n", bootfile);
}
// Download the bootfile.
uint32_t size;
if (tftp_read(payload, tftp_ip, bootfile, &size, MaxPayloadSize)) {
printf("Tftp failed.\n");
if (dhcp_release(server_ip))
printf("Dhcp release failed.\n");
halt();
}
printf("The bootfile was %d bytes long.\n", size);
// Use command line from params when present (added to the default).
param = netboot_params_val(NetbootParamIdKernelArgs);
if (param->data && param->size > 0 && *(char *)param->data != '\0') {
cmd_line[sizeof(def_cmd_line) - 1] = ' ';
strncpy(&cmd_line[sizeof(def_cmd_line)], param->data,
sizeof(cmd_line) - sizeof(def_cmd_line));
printf("Command line set from firmware parameters.\n");
// Otherwise, try to fetch it dynamically as a TFTP file.
} else if (!(tftp_read(cmd_line, tftp_ip, "cmdline." CONFIG_BOARD,
&size, sizeof(cmd_line) - 1))) {
while (cmd_line[size - 1] <= ' ') // strip trailing whitespace
if (!--size) break; // and control chars (\n, \r)
cmd_line[size] = '\0';
while (size--) // replace inline control
if (cmd_line[size] < ' ') // chars with spaces
cmd_line[size] = ' ';
printf("Command line loaded dynamically from TFTP server.\n");
// If the file doesn't exist, finally fall back to built-in default.
} else {
printf("No command line from TFTP, falling back to default.\n");
}
cmd_line[sizeof(cmd_line) - 1] = '\0';
// We're done on the network, so release our IP.
if (dhcp_release(server_ip)) {
printf("Dhcp release failed.\n");
halt();
}
// Add tftp server IP into command line.
static const char def_tftp_cmdline[] = " tftpserverip=xxx.xxx.xxx.xxx";
const int tftp_cmdline_def_size = sizeof(def_tftp_cmdline) - 1;
int cmd_line_size = strlen(cmd_line);
if (cmd_line_size + tftp_cmdline_def_size >= sizeof(cmd_line)) {
printf("Out of space adding TFTP server IP to the command line.\n");
return 1;
}
sprintf(&cmd_line[cmd_line_size], " tftpserverip=%d.%d.%d.%d",
uip_ipaddr1(tftp_ip), uip_ipaddr2(tftp_ip),
uip_ipaddr3(tftp_ip), uip_ipaddr4(tftp_ip));
printf("The command line is: %s\n", cmd_line);
// Boot.
boot(payload, cmd_line, NULL, NULL);
// We should never get here.
printf("Got to the end!\n");
halt();
return 0;
}
HRESULT LWIP_SOCKETS_Driver::UpdateAdapterConfiguration( UINT32 interfaceIndex, UINT32 updateFlags, SOCK_NetworkConfiguration* config )
{
NATIVE_PROFILE_PAL_NETWORK();
if(interfaceIndex >= NETWORK_INTERFACE_COUNT)
{
return CLR_E_INVALID_PARAMETER;
}
BOOL fEnableDhcp = (0 != (config->flags & SOCK_NETWORKCONFIGURATION_FLAGS_DHCP));
BOOL fDynamicDns = (0 != (config->flags & SOCK_NETWORKCONFIGURATION_FLAGS_DYNAMIC_DNS));
BOOL fDhcpStarted;
struct netif *pNetIf = netif_find_interface(g_LWIP_SOCKETS_Driver.m_interfaces[interfaceIndex].m_interfaceNumber);
if (NULL == pNetIf)
{
return CLR_E_FAIL;
}
fDhcpStarted = (0 != (pNetIf->flags & NETIF_FLAG_DHCP));
#if LWIP_DNS
// when using DHCP do not use the static settings
if(0 != (updateFlags & SOCK_NETWORKCONFIGURATION_UPDATE_DNS))
{
if(!fDynamicDns && (config->dnsServer1 != 0 || config->dnsServer2 != 0))
{
// user defined DNS addresses
if(config->dnsServer1 != 0)
{
u8_t idx = 0;
dns_setserver(idx, (struct ip_addr *)&config->dnsServer1);
}
if(config->dnsServer2 != 0)
{
u8_t idx = 1;
dns_setserver(idx, (struct ip_addr *)&config->dnsServer2);
}
}
}
#endif
#if LWIP_DHCP
if(0 != (updateFlags & SOCK_NETWORKCONFIGURATION_UPDATE_DHCP))
{
if(fEnableDhcp)
{
if(!fDhcpStarted)
{
if(ERR_OK != dhcp_start(pNetIf))
{
return CLR_E_FAIL;
}
}
}
else
{
if(fDhcpStarted)
{
dhcp_stop(pNetIf);
}
netif_set_addr(pNetIf, (struct ip_addr *) &config->ipaddr, (struct ip_addr *)&config->subnetmask, (struct ip_addr *)&config->gateway);
Network_PostEvent( NETWORK_EVENT_TYPE_ADDRESS_CHANGED, 0 );
}
}
if(fEnableDhcp && fDhcpStarted)
{
// Try Renew before release since renewing after release will fail
if(0 != (updateFlags & SOCK_NETWORKCONFIGURATION_UPDATE_DHCP_RENEW))
{
//netifapi_netif_common(pNetIf, NULL, dhcp_renew);
dhcp_renew(pNetIf);
}
else if(0 != (updateFlags & SOCK_NETWORKCONFIGURATION_UPDATE_DHCP_RELEASE))
{
//netifapi_netif_common(pNetIf, NULL, dhcp_release);
dhcp_release(pNetIf);
}
}
#endif
if(0 != (updateFlags & SOCK_NETWORKCONFIGURATION_UPDATE_MAC))
{
int len = __min(config->macAddressLen, sizeof(pNetIf->hwaddr));
memcpy(pNetIf->hwaddr, config->macAddressBuffer, len);
pNetIf->hwaddr_len = len;
// mac address requires stack re-init
Network_Interface_Close(interfaceIndex);
g_LWIP_SOCKETS_Driver.m_interfaces[interfaceIndex].m_interfaceNumber = Network_Interface_Open(interfaceIndex);
}
return S_OK;
}
