OVMS3-idf/components/tcpip_adapter/tcpip_adapter_lwip.c

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2016-08-17 15:08:22 +00:00
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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#include <stdio.h>
#include <string.h>
#include "tcpip_adapter.h"
#if CONFIG_TCPIP_LWIP
#include "lwip/inet.h"
#include "lwip/tcpip.h"
#include "lwip/dhcp.h"
#include "lwip/ip_addr.h"
#include "netif/wlanif.h"
#include "apps/dhcpserver.h"
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#include "esp_event.h"
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static struct netif *esp_netif[TCPIP_ADAPTER_IF_MAX];
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static tcpip_adapter_ip_info_t esp_ip[TCPIP_ADAPTER_IF_MAX];
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static tcpip_adapter_dhcp_status_t dhcps_status = TCPIP_ADAPTER_DHCP_INIT;
static tcpip_adapter_dhcp_status_t dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
#define TCPIP_ADAPTER_DEBUG(...)
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void tcpip_adapter_init(void)
{
static bool tcpip_inited = false;
if (tcpip_inited == false) {
tcpip_inited = true;
tcpip_init(NULL, NULL);
IP4_ADDR(&esp_ip[TCPIP_ADAPTER_IF_AP].ip, 192, 168 , 4, 1);
IP4_ADDR(&esp_ip[TCPIP_ADAPTER_IF_AP].gw, 192, 168 , 4, 1);
IP4_ADDR(&esp_ip[TCPIP_ADAPTER_IF_AP].netmask, 255, 255 , 255, 0);
}
}
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esp_err_t tcpip_adapter_start(tcpip_adapter_if_t tcpip_if, uint8_t *mac, tcpip_adapter_ip_info_t *ip_info)
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{
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if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || mac == NULL || ip_info == NULL) {
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return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (esp_netif[tcpip_if] == NULL) {
esp_netif[tcpip_if] = malloc(sizeof(struct netif));
if (esp_netif[tcpip_if] == NULL) {
return ESP_ERR_NO_MEM;
}
memcpy(esp_netif[tcpip_if]->hwaddr, mac, NETIF_MAX_HWADDR_LEN);
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netif_add(esp_netif[tcpip_if], &ip_info->ip, &ip_info->netmask, &ip_info->gw, NULL, wlanif_init, tcpip_input);
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}
if (tcpip_if == TCPIP_ADAPTER_IF_AP) {
netif_set_up(esp_netif[tcpip_if]);
if (dhcps_status == TCPIP_ADAPTER_DHCP_INIT) {
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dhcps_start(esp_netif[tcpip_if], ip_info->ip);
printf("dhcp server start:(ip: " IPSTR ", mask: " IPSTR ", gw: " IPSTR ")\n",
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IP2STR(&ip_info->ip), IP2STR(&ip_info->netmask), IP2STR(&ip_info->gw));
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dhcps_status = TCPIP_ADAPTER_DHCP_STARTED;
}
}
/* if ap is on, choose ap as default if */
if (esp_netif[TCPIP_ADAPTER_IF_AP]) {
netif_set_default(esp_netif[TCPIP_ADAPTER_IF_AP]);
} else if (esp_netif[TCPIP_ADAPTER_IF_STA]) {
netif_set_default(esp_netif[TCPIP_ADAPTER_IF_STA]);
}
return ESP_OK;
}
esp_err_t tcpip_adapter_stop(tcpip_adapter_if_t tcpip_if)
{
if (tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (esp_netif[tcpip_if] == NULL) {
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
if (tcpip_if == TCPIP_ADAPTER_IF_AP) {
dhcps_stop(esp_netif[tcpip_if]); // TODO: dhcps checks status by its self
dhcps_status = TCPIP_ADAPTER_DHCP_INIT;
} else if (tcpip_if == TCPIP_ADAPTER_IF_STA) {
dhcp_release(esp_netif[tcpip_if]);
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dhcp_stop(esp_netif[tcpip_if]);
dhcp_cleanup(esp_netif[tcpip_if]);
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dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
ip4_addr_set_zero(&esp_ip[tcpip_if].ip);
ip4_addr_set_zero(&esp_ip[tcpip_if].gw);
ip4_addr_set_zero(&esp_ip[tcpip_if].netmask);
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}
netif_remove(esp_netif[tcpip_if]);
free(esp_netif[tcpip_if]);
esp_netif[tcpip_if] = NULL;
/* in ap + sta mode, if stop ap, choose sta as default if */
if (esp_netif[TCPIP_ADAPTER_IF_STA] && tcpip_if == TCPIP_ADAPTER_IF_AP) {
netif_set_default(esp_netif[TCPIP_ADAPTER_IF_STA]);
}
return ESP_OK;
}
esp_err_t tcpip_adapter_up(tcpip_adapter_if_t tcpip_if)
{
if (tcpip_if == TCPIP_ADAPTER_IF_STA) {
if (esp_netif[tcpip_if] == NULL){
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
/* use last obtained ip, or static ip */
netif_set_addr(esp_netif[tcpip_if], &esp_ip[tcpip_if].ip, &esp_ip[tcpip_if].netmask, &esp_ip[tcpip_if].gw);
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netif_set_up(esp_netif[tcpip_if]);
}
return ESP_OK;
}
esp_err_t tcpip_adapter_down(tcpip_adapter_if_t tcpip_if)
{
if (tcpip_if == TCPIP_ADAPTER_IF_STA) {
if (esp_netif[tcpip_if] == NULL) {
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return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
if (dhcpc_status == TCPIP_ADAPTER_DHCP_STARTED) {
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dhcp_stop(esp_netif[tcpip_if]);
dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
ip4_addr_set_zero(&esp_ip[tcpip_if].ip);
ip4_addr_set_zero(&esp_ip[tcpip_if].gw);
ip4_addr_set_zero(&esp_ip[tcpip_if].netmask);
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}
netif_set_down(esp_netif[tcpip_if]);
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}
return ESP_OK;
}
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esp_err_t tcpip_adapter_get_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_ip_info_t *ip_info)
{
struct netif *p_netif;
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if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || ip_info == NULL) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
p_netif = esp_netif[tcpip_if];
if (p_netif != NULL && netif_is_up(p_netif)) {
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ip4_addr_set(&ip_info->ip, ip_2_ip4(&p_netif->ip_addr));
ip4_addr_set(&ip_info->netmask, ip_2_ip4(&p_netif->netmask));
ip4_addr_set(&ip_info->gw, ip_2_ip4(&p_netif->gw));
return ESP_OK;
}
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ip4_addr_copy(ip_info->ip, esp_ip[tcpip_if].ip);
ip4_addr_copy(ip_info->gw, esp_ip[tcpip_if].gw);
ip4_addr_copy(ip_info->netmask, esp_ip[tcpip_if].netmask);
return ESP_OK;
}
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esp_err_t tcpip_adapter_set_ip_info(tcpip_adapter_if_t tcpip_if, tcpip_adapter_ip_info_t *ip_info)
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{
struct netif *p_netif;
tcpip_adapter_dhcp_status_t status;
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if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || ip_info == NULL ||
ip4_addr_isany_val(ip_info->ip) || ip4_addr_isany_val(ip_info->netmask) || ip4_addr_isany_val(ip_info->gw)) {
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return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (tcpip_if == TCPIP_ADAPTER_IF_AP) {
tcpip_adapter_dhcps_get_status(tcpip_if, &status);
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if (status != TCPIP_ADAPTER_DHCP_STOPPED) {
return ESP_ERR_TCPIP_ADAPTER_DHCP_NOT_STOPPED;
}
} else if (tcpip_if == TCPIP_ADAPTER_IF_STA) {
tcpip_adapter_dhcpc_get_status(tcpip_if, &status);
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if (status != TCPIP_ADAPTER_DHCP_STOPPED) {
return ESP_ERR_TCPIP_ADAPTER_DHCP_NOT_STOPPED;
}
}
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ip4_addr_copy(esp_ip[tcpip_if].ip, ip_info->ip);
ip4_addr_copy(esp_ip[tcpip_if].gw, ip_info->gw);
ip4_addr_copy(esp_ip[tcpip_if].netmask, ip_info->netmask);
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p_netif = esp_netif[tcpip_if];
if (p_netif != NULL && netif_is_up(p_netif)) {
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netif_set_addr(p_netif, &ip_info->ip, &ip_info->netmask, &ip_info->gw);
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}
return ESP_OK;
}
#if 0
esp_err_t tcpip_adapter_get_mac(tcpip_adapter_if_t tcpip_if, uint8_t mac[6])
{
struct netif *p_netif;
if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || mac == NULL) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
p_netif = esp_netif[tcpip_if];
if (p_netif != NULL) {
memcpy(mac, p_netif->hwaddr, NETIF_MAX_HWADDR_LEN);
return ESP_OK;
}
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
esp_err_t tcpip_adapter_set_mac(tcpip_adapter_if_t tcpip_if, uint8_t mac[6])
{
struct netif *p_netif;
if (tcpip_if >= TCPIP_ADAPTER_IF_MAX || mac == NULL) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
p_netif = esp_netif[tcpip_if];
if (p_netif != NULL) {
memcpy(p_netif->hwaddr, mac, NETIF_MAX_HWADDR_LEN);
return ESP_OK;
}
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
#endif
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esp_err_t tcpip_adapter_dhcps_option(tcpip_adapter_option_mode_t opt_op, tcpip_adapter_option_id_t opt_id, void *opt_val, uint32_t opt_len)
{
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void *opt_info = dhcps_option_info(opt_id, opt_len);
if (opt_info == NULL || opt_val == NULL) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (opt_op == TCPIP_ADAPTER_OP_GET) {
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if (dhcps_status == TCPIP_ADAPTER_DHCP_STOPPED) {
return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPPED;
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}
switch (opt_id) {
case IP_ADDRESS_LEASE_TIME:
{
*(uint32_t*)opt_val = *(uint32_t*)opt_info;
break;
}
case REQUESTED_IP_ADDRESS:
{
memcpy(opt_val, opt_info, opt_len);
break;
}
case ROUTER_SOLICITATION_ADDRESS:
{
*(uint8_t *)opt_val = (*(uint8_t *)opt_info) & OFFER_ROUTER;
break;
}
default:
break;
}
} else if (opt_op == TCPIP_ADAPTER_OP_SET) {
if (dhcps_status == TCPIP_ADAPTER_DHCP_STARTED) {
return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED;
}
switch (opt_id) {
case IP_ADDRESS_LEASE_TIME:
{
if (*(uint32_t*)opt_val != 0)
*(uint32_t*)opt_info = *(uint32_t*)opt_val;
else
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*(uint32_t*)opt_info = DHCPS_LEASE_TIME_DEF;
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break;
}
case REQUESTED_IP_ADDRESS:
{
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tcpip_adapter_ip_info_t info;
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uint32_t softap_ip = 0;
uint32_t start_ip = 0;
uint32_t end_ip = 0;
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dhcps_lease_t *poll = opt_val;
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memset(&info, 0x00, sizeof(tcpip_adapter_ip_info_t));
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tcpip_adapter_get_ip_info(WIFI_IF_AP, &info);
softap_ip = htonl(info.ip.addr);
start_ip = htonl(poll->start_ip.addr);
end_ip = htonl(poll->end_ip.addr);
/*config ip information can't contain local ip*/
if ((start_ip <= softap_ip) && (softap_ip <= end_ip))
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
/*config ip information must be in the same segment as the local ip*/
softap_ip >>= 8;
if ((start_ip >> 8 != softap_ip)
|| (end_ip >> 8 != softap_ip)) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (end_ip - start_ip > DHCPS_MAX_LEASE) {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
memcpy(opt_info, opt_val, opt_len);
break;
}
case ROUTER_SOLICITATION_ADDRESS:
{
*(uint8_t *)opt_info = (*(uint8_t *)opt_val) & OFFER_ROUTER;
break;
}
default:
break;
}
} else {
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
return ESP_OK;
}
esp_err_t tcpip_adapter_dhcps_get_status(tcpip_adapter_if_t tcpip_if, tcpip_adapter_dhcp_status_t *status)
{
*status = dhcps_status;
return ESP_OK;
}
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esp_err_t tcpip_adapter_dhcps_start(tcpip_adapter_if_t tcpip_if)
{
/* only support ap now */
if (tcpip_if != TCPIP_ADAPTER_IF_AP || tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
TCPIP_ADAPTER_DEBUG("dhcp server invalid if=%d\n", tcpip_if);
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (dhcps_status != TCPIP_ADAPTER_DHCP_STARTED) {
struct netif *p_netif = esp_netif[tcpip_if];
if (p_netif != NULL && netif_is_up(p_netif)) {
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tcpip_adapter_ip_info_t default_ip;
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tcpip_adapter_get_ip_info(WIFI_IF_AP, &default_ip);
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dhcps_start(p_netif, default_ip.ip);
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dhcps_status = TCPIP_ADAPTER_DHCP_STARTED;
TCPIP_ADAPTER_DEBUG("dhcp server start successfully\n");
return ESP_OK;
} else {
TCPIP_ADAPTER_DEBUG("dhcp server re init\n");
dhcps_status = TCPIP_ADAPTER_DHCP_INIT;
return ESP_OK;
}
}
TCPIP_ADAPTER_DEBUG("dhcp server already start\n");
return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED;
}
esp_err_t tcpip_adapter_dhcps_stop(tcpip_adapter_if_t tcpip_if)
{
/* only support ap now */
if (tcpip_if != TCPIP_ADAPTER_IF_AP || tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
TCPIP_ADAPTER_DEBUG("dhcp server invalid if=%d\n", tcpip_if);
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (dhcps_status == TCPIP_ADAPTER_DHCP_STARTED) {
struct netif *p_netif = esp_netif[tcpip_if];
if (p_netif != NULL) {
dhcps_stop(p_netif);
} else {
TCPIP_ADAPTER_DEBUG("dhcp server if not ready\n");
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
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} else if (dhcps_status == TCPIP_ADAPTER_DHCP_STOPPED) {
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TCPIP_ADAPTER_DEBUG("dhcp server already stoped\n");
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return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPPED;
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}
TCPIP_ADAPTER_DEBUG("dhcp server stop successfully\n");
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dhcps_status = TCPIP_ADAPTER_DHCP_STOPPED;
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return ESP_OK;
}
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esp_err_t tcpip_adapter_dhcpc_option(tcpip_adapter_option_mode_t opt_op, tcpip_adapter_option_id_t opt_id, void *opt_val, uint32_t opt_len)
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{
// TODO: when dhcp request timeout,change the retry count
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return ESP_OK;
}
static void tcpip_adapter_dhcpc_cb(void)
{
struct netif *netif = esp_netif[TCPIP_ADAPTER_IF_STA];
if (!netif) {
TCPIP_ADAPTER_DEBUG("null netif=%p\n", netif);
return;
}
if ( !ip4_addr_cmp(ip_2_ip4(&netif->ip_addr), IP4_ADDR_ANY) ) {
tcpip_adapter_ip_info_t *ip_info = &esp_ip[TCPIP_ADAPTER_IF_STA];
//check whether IP is changed
if ( !ip4_addr_cmp(ip_2_ip4(&netif->ip_addr), &ip_info->ip) ||
!ip4_addr_cmp(ip_2_ip4(&netif->netmask), &ip_info->netmask) ||
!ip4_addr_cmp(ip_2_ip4(&netif->gw), &ip_info->gw) ) {
system_event_t evt;
ip4_addr_set(&ip_info->ip, ip_2_ip4(&netif->ip_addr));
ip4_addr_set(&ip_info->netmask, ip_2_ip4(&netif->netmask));
ip4_addr_set(&ip_info->gw, ip_2_ip4(&netif->gw));
//notify event
evt.event_id = SYSTEM_EVENT_STA_GOTIP;
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memcpy(&evt.event_info.got_ip.ip_info, ip_info, sizeof(tcpip_adapter_ip_info_t));
esp_event_send(&evt);
} else {
TCPIP_ADAPTER_DEBUG("ip unchanged\n");
}
}
return;
}
esp_err_t tcpip_adapter_dhcpc_get_status(tcpip_adapter_if_t tcpip_if, tcpip_adapter_dhcp_status_t *status)
{
*status = dhcpc_status;
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return ESP_OK;
}
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esp_err_t tcpip_adapter_dhcpc_start(tcpip_adapter_if_t tcpip_if)
{
/* only support sta now, need to support ethernet */
if (tcpip_if != TCPIP_ADAPTER_IF_STA || tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
TCPIP_ADAPTER_DEBUG("dhcp client invalid if=%d\n", tcpip_if);
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (dhcpc_status != TCPIP_ADAPTER_DHCP_STARTED) {
struct netif *p_netif = esp_netif[tcpip_if];
ip4_addr_set_zero(&esp_ip[tcpip_if].ip);
ip4_addr_set_zero(&esp_ip[tcpip_if].gw);
ip4_addr_set_zero(&esp_ip[tcpip_if].netmask);
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if (p_netif != NULL) {
if (netif_is_up(p_netif)) {
TCPIP_ADAPTER_DEBUG("dhcp client init ip/mask/gw to all-0\n");
ip_addr_set_zero(&p_netif->ip_addr);
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ip_addr_set_zero(&p_netif->netmask);
ip_addr_set_zero(&p_netif->gw);
} else {
TCPIP_ADAPTER_DEBUG("dhcp client re init\n");
dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
return ESP_OK;
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}
if (dhcp_start(p_netif) != ERR_OK) {
TCPIP_ADAPTER_DEBUG("dhcp client start failed\n");
return ESP_ERR_TCPIP_ADAPTER_DHCPC_START_FAILED;
}
dhcp_set_cb(p_netif, tcpip_adapter_dhcpc_cb);
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TCPIP_ADAPTER_DEBUG("dhcp client start successfully\n");
dhcpc_status = TCPIP_ADAPTER_DHCP_STARTED;
return ESP_OK;
} else {
TCPIP_ADAPTER_DEBUG("dhcp client re init\n");
dhcpc_status = TCPIP_ADAPTER_DHCP_INIT;
return ESP_OK;
}
}
TCPIP_ADAPTER_DEBUG("dhcp client already started\n");
return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STARTED;
}
esp_err_t tcpip_adapter_dhcpc_stop(tcpip_adapter_if_t tcpip_if)
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{
/* only support sta now, need to support ethernet */
if (tcpip_if != TCPIP_ADAPTER_IF_STA || tcpip_if >= TCPIP_ADAPTER_IF_MAX) {
TCPIP_ADAPTER_DEBUG("dhcp client invalid if=%d\n", tcpip_if);
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
}
if (dhcpc_status == TCPIP_ADAPTER_DHCP_STARTED) {
struct netif *p_netif = esp_netif[tcpip_if];
if (p_netif != NULL) {
dhcp_stop(p_netif);
ip4_addr_set_zero(&esp_ip[tcpip_if].ip);
ip4_addr_set_zero(&esp_ip[tcpip_if].gw);
ip4_addr_set_zero(&esp_ip[tcpip_if].netmask);
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} else {
TCPIP_ADAPTER_DEBUG("dhcp client if not ready\n");
return ESP_ERR_TCPIP_ADAPTER_IF_NOT_READY;
}
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} else if (dhcpc_status == TCPIP_ADAPTER_DHCP_STOPPED) {
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TCPIP_ADAPTER_DEBUG("dhcp client already stoped\n");
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return ESP_ERR_TCPIP_ADAPTER_DHCP_ALREADY_STOPPED;
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}
TCPIP_ADAPTER_DEBUG("dhcp client stop successfully\n");
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dhcpc_status = TCPIP_ADAPTER_DHCP_STOPPED;
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return ESP_OK;
}
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esp_err_t tcpip_adapter_sta_input(void *buffer, uint16_t len, void *eb)
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{
wlanif_input(esp_netif[TCPIP_ADAPTER_IF_STA], buffer, len, eb);
return ESP_OK;
}
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esp_err_t tcpip_adapter_ap_input(void *buffer, uint16_t len, void *eb)
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{
wlanif_input(esp_netif[TCPIP_ADAPTER_IF_AP], buffer, len, eb);
return ESP_OK;
}
#if 0
bool tcpip_dep_output(wifi_interface_t wifi_if, void *buffer, uint16_t len)
{
return true;
}
#endif
wifi_interface_t tcpip_adapter_get_wifi_if(void *dev)
{
struct netif *p_netif = (struct netif *)dev;
if (p_netif == esp_netif[TCPIP_ADAPTER_IF_STA]) {
return WIFI_IF_STA;
} else if (p_netif == esp_netif[TCPIP_ADAPTER_IF_AP]) {
return WIFI_IF_AP;
}
return WIFI_IF_MAX;
}
esp_err_t tcpip_adapter_get_sta_list(struct station_info *sta_info, struct station_list **sta_list)
{
struct station_info *info = sta_info;
struct station_list *list;
STAILQ_HEAD(, station_list) list_head;
if (sta_list == NULL)
return ESP_ERR_TCPIP_ADAPTER_INVALID_PARAMS;
STAILQ_INIT(&list_head);
while (info != NULL) {
list = (struct station_list *)malloc(sizeof(struct station_list));
memset(list, 0, sizeof (struct station_list));
if (list == NULL) {
return ESP_ERR_TCPIP_ADAPTER_NO_MEM;
}
memcpy(list->mac, info->bssid, 6);
dhcp_search_ip_on_mac(list->mac, &list->ip);
STAILQ_INSERT_TAIL(&list_head, list, next);
info = STAILQ_NEXT(info, next);
}
*sta_list = STAILQ_FIRST(&list_head);
return ESP_OK;
}
esp_err_t tcpip_adapter_free_sta_list(struct station_list *sta_list)
{
struct station_list *list = sta_list;
while (sta_list != NULL) {
list = sta_list;
sta_list = STAILQ_NEXT(sta_list, next);
free(list);
}
return ESP_OK;
}
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#endif