xiaoxiang781216 commented on code in PR #3876: URL: https://github.com/apache/nuttx-apps/pull/3876#discussion_r4313599871
########## netutils/wifibridge/wifibridge.c: ########## @@ -0,0 +1,351 @@ +/**************************************************************************** + * apps/netutils/wifibridge/wifibridge.c + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/socket.h> + +#include <errno.h> +#include <string.h> +#include <unistd.h> + +#include <net/if.h> +#include <arpa/inet.h> +#include <netinet/in.h> + +#include "netutils/netlib.h" +#include "netutils/wifibridge.h" +#include "wireless/wapi.h" + +#ifdef CONFIG_NETUTILS_WIFIBRIDGE_DHCPD +# include "netutils/dhcpd.h" +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: wifibridge_setup_softap + * + * Description: + * Put the Wi-Fi interface in master mode with the requested security, + * channel and SSID. + * + ****************************************************************************/ + +static int wifibridge_setup_softap(int sock, + FAR const struct wifibridge_config_s *cfg) +{ + size_t passlen = strnlen(cfg->passphrase, 64); + int version; + int ret; + + if (passlen < 8 || passlen > 63 || cfg->channel < 1 || cfg->channel > 13) + { + return -EINVAL; + } + + version = cfg->security == WIFIBRIDGE_SEC_WPA3 ? + IW_AUTH_WPA_VERSION_WPA3 : IW_AUTH_WPA_VERSION_WPA2; + + ret = wapi_set_mode(sock, cfg->wlanif, WAPI_MODE_MASTER); + if (ret < 0) + { + return ret; + } + + ret = wpa_driver_wext_set_auth_param(sock, cfg->wlanif, + IW_AUTH_WPA_VERSION, version); + if (ret < 0) + { + return ret; + } + + ret = wpa_driver_wext_set_auth_param(sock, cfg->wlanif, + IW_AUTH_CIPHER_PAIRWISE, + IW_AUTH_CIPHER_CCMP); + if (ret < 0) + { + return ret; + } + + ret = wpa_driver_wext_set_key_ext(sock, cfg->wlanif, WPA_ALG_CCMP, + cfg->passphrase, passlen); + if (ret < 0) + { + return ret; + } + + ret = wapi_set_freq(sock, cfg->wlanif, cfg->channel, WAPI_FREQ_FIXED); + if (ret < 0) + { + return ret; + } + + return wapi_set_essid(sock, cfg->wlanif, cfg->ssid, WAPI_ESSID_ON); +} + +/**************************************************************************** + * Name: wifibridge_teardown + * + * Description: + * Undo the steps of wifibridge_start() in reverse order. Each step is + * tried even if an earlier one failed, since this also cleans up a + * partially started bridge. + * + ****************************************************************************/ + +static int wifibridge_teardown(int sock, + FAR const struct wifibridge_config_s *cfg) +{ + int ret = OK; + +#ifdef CONFIG_NETUTILS_WIFIBRIDGE_DHCPD + dhcpd_stop(); +#endif + + netlib_ifdown(cfg->bridge); + + netlib_bridge_delif(cfg->bridge, cfg->wlanif); + netlib_bridge_delif(cfg->bridge, cfg->ethif); + + if (netlib_del_bridge(cfg->bridge) < 0) + { + ret = -errno; + } + + /* Bringing the interface down does not stop the AP, an ESSID set with the + * off flag does. + */ + + wapi_set_essid(sock, cfg->wlanif, "", WAPI_ESSID_OFF); + wapi_set_ifdown(sock, cfg->wlanif); + + return ret; +} + +/**************************************************************************** + * Name: wifibridge_isup + ****************************************************************************/ + +static bool wifibridge_isup(int sock, FAR const char *ifname) +{ + int is_up; + + return wapi_get_ifup(sock, ifname, &is_up) >= 0 && is_up != 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: wifibridge_start + ****************************************************************************/ + +int wifibridge_start(FAR const struct wifibridge_config_s *config) +{ + struct in_addr none; + struct in_addr addr; + int sock; + int ret; + + if (config == NULL || config->bridge == NULL || config->ethif == NULL || + config->wlanif == NULL || config->ssid == NULL || + config->passphrase == NULL) + { + return -EINVAL; + } + + if (if_nametoindex(config->bridge) != 0) + { + return -EEXIST; Review Comment: sorroy, my mistake. -- This is an automated message from the Apache Git Service. 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