| /* |
| * hostapd / Initialization and configuration |
| * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * Alternatively, this software may be distributed under the terms of BSD |
| * license. |
| * |
| * See README and COPYING for more details. |
| */ |
| |
| #include "utils/includes.h" |
| |
| #include "utils/common.h" |
| #include "utils/eloop.h" |
| #include "common/ieee802_11_defs.h" |
| #include "radius/radius_client.h" |
| #include "drivers/driver.h" |
| #include "hostapd.h" |
| #include "authsrv.h" |
| #include "sta_info.h" |
| #include "accounting.h" |
| #include "ap_list.h" |
| #include "beacon.h" |
| #include "iapp.h" |
| #include "ieee802_1x.h" |
| #include "ieee802_11_auth.h" |
| #include "vlan_init.h" |
| #include "wpa_auth.h" |
| #include "wps_hostapd.h" |
| #include "hw_features.h" |
| #include "wpa_auth_glue.h" |
| #include "ap_drv_ops.h" |
| #include "ap_config.h" |
| #include "p2p_hostapd.h" |
| |
| |
| static int hostapd_flush_old_stations(struct hostapd_data *hapd); |
| static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd); |
| static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd); |
| |
| extern int wpa_debug_level; |
| |
| |
| static void hostapd_reload_bss(struct hostapd_data *hapd) |
| { |
| #ifndef CONFIG_NO_RADIUS |
| radius_client_reconfig(hapd->radius, hapd->conf->radius); |
| #endif /* CONFIG_NO_RADIUS */ |
| |
| if (hostapd_setup_wpa_psk(hapd->conf)) { |
| wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK " |
| "after reloading configuration"); |
| } |
| |
| if (hapd->conf->ieee802_1x || hapd->conf->wpa) |
| hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1); |
| else |
| hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0); |
| |
| if (hapd->conf->wpa && hapd->wpa_auth == NULL) |
| hostapd_setup_wpa(hapd); |
| else if (hapd->conf->wpa) { |
| const u8 *wpa_ie; |
| size_t wpa_ie_len; |
| hostapd_reconfig_wpa(hapd); |
| wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len); |
| if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) |
| wpa_printf(MSG_ERROR, "Failed to configure WPA IE for " |
| "the kernel driver."); |
| } else if (hapd->wpa_auth) { |
| wpa_deinit(hapd->wpa_auth); |
| hapd->wpa_auth = NULL; |
| hostapd_set_privacy(hapd, 0); |
| hostapd_setup_encryption(hapd->conf->iface, hapd); |
| hostapd_set_generic_elem(hapd, (u8 *) "", 0); |
| } |
| |
| ieee802_11_set_beacon(hapd); |
| hostapd_update_wps(hapd); |
| |
| if (hapd->conf->ssid.ssid_set && |
| hostapd_set_ssid(hapd, (u8 *) hapd->conf->ssid.ssid, |
| hapd->conf->ssid.ssid_len)) { |
| wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); |
| /* try to continue */ |
| } |
| wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface); |
| } |
| |
| |
| int hostapd_reload_config(struct hostapd_iface *iface) |
| { |
| struct hostapd_data *hapd = iface->bss[0]; |
| struct hostapd_config *newconf, *oldconf; |
| size_t j; |
| |
| if (iface->config_read_cb == NULL) |
| return -1; |
| newconf = iface->config_read_cb(iface->config_fname); |
| if (newconf == NULL) |
| return -1; |
| |
| /* |
| * Deauthenticate all stations since the new configuration may not |
| * allow them to use the BSS anymore. |
| */ |
| for (j = 0; j < iface->num_bss; j++) { |
| hostapd_flush_old_stations(iface->bss[j]); |
| hostapd_broadcast_wep_clear(iface->bss[j]); |
| |
| #ifndef CONFIG_NO_RADIUS |
| /* TODO: update dynamic data based on changed configuration |
| * items (e.g., open/close sockets, etc.) */ |
| radius_client_flush(iface->bss[j]->radius, 0); |
| #endif /* CONFIG_NO_RADIUS */ |
| } |
| |
| oldconf = hapd->iconf; |
| iface->conf = newconf; |
| |
| for (j = 0; j < iface->num_bss; j++) { |
| hapd = iface->bss[j]; |
| hapd->iconf = newconf; |
| hapd->conf = &newconf->bss[j]; |
| hostapd_reload_bss(hapd); |
| } |
| |
| hostapd_config_free(oldconf); |
| |
| |
| return 0; |
| } |
| |
| |
| static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd, |
| char *ifname) |
| { |
| int i; |
| |
| for (i = 0; i < NUM_WEP_KEYS; i++) { |
| if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i, |
| 0, NULL, 0, NULL, 0)) { |
| wpa_printf(MSG_DEBUG, "Failed to clear default " |
| "encryption keys (ifname=%s keyidx=%d)", |
| ifname, i); |
| } |
| } |
| #ifdef CONFIG_IEEE80211W |
| if (hapd->conf->ieee80211w) { |
| for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) { |
| if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, |
| NULL, i, 0, NULL, |
| 0, NULL, 0)) { |
| wpa_printf(MSG_DEBUG, "Failed to clear " |
| "default mgmt encryption keys " |
| "(ifname=%s keyidx=%d)", ifname, i); |
| } |
| } |
| } |
| #endif /* CONFIG_IEEE80211W */ |
| } |
| |
| |
| static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd) |
| { |
| hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface); |
| return 0; |
| } |
| |
| |
| static int hostapd_broadcast_wep_set(struct hostapd_data *hapd) |
| { |
| int errors = 0, idx; |
| struct hostapd_ssid *ssid = &hapd->conf->ssid; |
| |
| idx = ssid->wep.idx; |
| if (ssid->wep.default_len && |
| hostapd_drv_set_key(hapd->conf->iface, |
| hapd, WPA_ALG_WEP, broadcast_ether_addr, idx, |
| 1, NULL, 0, ssid->wep.key[idx], |
| ssid->wep.len[idx])) { |
| wpa_printf(MSG_WARNING, "Could not set WEP encryption."); |
| errors++; |
| } |
| |
| if (ssid->dyn_vlan_keys) { |
| size_t i; |
| for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) { |
| const char *ifname; |
| struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i]; |
| if (key == NULL) |
| continue; |
| ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, |
| i); |
| if (ifname == NULL) |
| continue; |
| |
| idx = key->idx; |
| if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_WEP, |
| broadcast_ether_addr, idx, 1, |
| NULL, 0, key->key[idx], |
| key->len[idx])) { |
| wpa_printf(MSG_WARNING, "Could not set " |
| "dynamic VLAN WEP encryption."); |
| errors++; |
| } |
| } |
| } |
| |
| return errors; |
| } |
| |
| /** |
| * hostapd_cleanup - Per-BSS cleanup (deinitialization) |
| * @hapd: Pointer to BSS data |
| * |
| * This function is used to free all per-BSS data structures and resources. |
| * This gets called in a loop for each BSS between calls to |
| * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface |
| * is deinitialized. Most of the modules that are initialized in |
| * hostapd_setup_bss() are deinitialized here. |
| */ |
| static void hostapd_cleanup(struct hostapd_data *hapd) |
| { |
| if (hapd->iface->ctrl_iface_deinit) |
| hapd->iface->ctrl_iface_deinit(hapd); |
| |
| iapp_deinit(hapd->iapp); |
| hapd->iapp = NULL; |
| accounting_deinit(hapd); |
| hostapd_deinit_wpa(hapd); |
| vlan_deinit(hapd); |
| hostapd_acl_deinit(hapd); |
| #ifndef CONFIG_NO_RADIUS |
| radius_client_deinit(hapd->radius); |
| hapd->radius = NULL; |
| #endif /* CONFIG_NO_RADIUS */ |
| |
| hostapd_deinit_wps(hapd); |
| |
| authsrv_deinit(hapd); |
| |
| if (hapd->interface_added && |
| hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) { |
| wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s", |
| hapd->conf->iface); |
| } |
| |
| os_free(hapd->probereq_cb); |
| hapd->probereq_cb = NULL; |
| |
| #ifdef CONFIG_P2P |
| wpabuf_free(hapd->p2p_beacon_ie); |
| hapd->p2p_beacon_ie = NULL; |
| wpabuf_free(hapd->p2p_probe_resp_ie); |
| hapd->p2p_probe_resp_ie = NULL; |
| #endif /* CONFIG_P2P */ |
| } |
| |
| |
| /** |
| * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup |
| * @iface: Pointer to interface data |
| * |
| * This function is called before per-BSS data structures are deinitialized |
| * with hostapd_cleanup(). |
| */ |
| static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface) |
| { |
| } |
| |
| |
| /** |
| * hostapd_cleanup_iface - Complete per-interface cleanup |
| * @iface: Pointer to interface data |
| * |
| * This function is called after per-BSS data structures are deinitialized |
| * with hostapd_cleanup(). |
| */ |
| static void hostapd_cleanup_iface(struct hostapd_iface *iface) |
| { |
| hostapd_free_hw_features(iface->hw_features, iface->num_hw_features); |
| iface->hw_features = NULL; |
| os_free(iface->current_rates); |
| iface->current_rates = NULL; |
| ap_list_deinit(iface); |
| hostapd_config_free(iface->conf); |
| iface->conf = NULL; |
| |
| os_free(iface->config_fname); |
| os_free(iface->bss); |
| os_free(iface); |
| } |
| |
| |
| static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd) |
| { |
| int i; |
| |
| hostapd_broadcast_wep_set(hapd); |
| |
| if (hapd->conf->ssid.wep.default_len) { |
| hostapd_set_privacy(hapd, 1); |
| return 0; |
| } |
| |
| /* |
| * When IEEE 802.1X is not enabled, the driver may need to know how to |
| * set authentication algorithms for static WEP. |
| */ |
| hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs); |
| |
| for (i = 0; i < 4; i++) { |
| if (hapd->conf->ssid.wep.key[i] && |
| hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i, |
| i == hapd->conf->ssid.wep.idx, NULL, 0, |
| hapd->conf->ssid.wep.key[i], |
| hapd->conf->ssid.wep.len[i])) { |
| wpa_printf(MSG_WARNING, "Could not set WEP " |
| "encryption."); |
| return -1; |
| } |
| if (hapd->conf->ssid.wep.key[i] && |
| i == hapd->conf->ssid.wep.idx) |
| hostapd_set_privacy(hapd, 1); |
| } |
| |
| return 0; |
| } |
| |
| |
| static int hostapd_flush_old_stations(struct hostapd_data *hapd) |
| { |
| int ret = 0; |
| u8 addr[ETH_ALEN]; |
| |
| if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL) |
| return 0; |
| |
| wpa_printf(MSG_DEBUG, "Flushing old station entries"); |
| if (hostapd_flush(hapd)) { |
| wpa_printf(MSG_WARNING, "Could not connect to kernel driver."); |
| ret = -1; |
| } |
| wpa_printf(MSG_DEBUG, "Deauthenticate all stations"); |
| os_memset(addr, 0xff, ETH_ALEN); |
| hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID); |
| hostapd_free_stas(hapd); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * hostapd_validate_bssid_configuration - Validate BSSID configuration |
| * @iface: Pointer to interface data |
| * Returns: 0 on success, -1 on failure |
| * |
| * This function is used to validate that the configured BSSIDs are valid. |
| */ |
| static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface) |
| { |
| u8 mask[ETH_ALEN] = { 0 }; |
| struct hostapd_data *hapd = iface->bss[0]; |
| unsigned int i = iface->conf->num_bss, bits = 0, j; |
| int res; |
| int auto_addr = 0; |
| |
| if (hostapd_drv_none(hapd)) |
| return 0; |
| |
| /* Generate BSSID mask that is large enough to cover the BSSIDs. */ |
| |
| /* Determine the bits necessary to cover the number of BSSIDs. */ |
| for (i--; i; i >>= 1) |
| bits++; |
| |
| /* Determine the bits necessary to any configured BSSIDs, |
| if they are higher than the number of BSSIDs. */ |
| for (j = 0; j < iface->conf->num_bss; j++) { |
| if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) { |
| if (j) |
| auto_addr++; |
| continue; |
| } |
| |
| for (i = 0; i < ETH_ALEN; i++) { |
| mask[i] |= |
| iface->conf->bss[j].bssid[i] ^ |
| hapd->own_addr[i]; |
| } |
| } |
| |
| if (!auto_addr) |
| goto skip_mask_ext; |
| |
| for (i = 0; i < ETH_ALEN && mask[i] == 0; i++) |
| ; |
| j = 0; |
| if (i < ETH_ALEN) { |
| j = (5 - i) * 8; |
| |
| while (mask[i] != 0) { |
| mask[i] >>= 1; |
| j++; |
| } |
| } |
| |
| if (bits < j) |
| bits = j; |
| |
| if (bits > 40) { |
| wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)", |
| bits); |
| return -1; |
| } |
| |
| os_memset(mask, 0xff, ETH_ALEN); |
| j = bits / 8; |
| for (i = 5; i > 5 - j; i--) |
| mask[i] = 0; |
| j = bits % 8; |
| while (j--) |
| mask[i] <<= 1; |
| |
| skip_mask_ext: |
| wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)", |
| (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits); |
| |
| res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask); |
| if (res == 0) |
| return 0; |
| |
| if (res < 0) { |
| wpa_printf(MSG_ERROR, "Driver did not accept BSSID mask " |
| MACSTR " for start address " MACSTR ".", |
| MAC2STR(mask), MAC2STR(hapd->own_addr)); |
| return -1; |
| } |
| |
| if (!auto_addr) |
| return 0; |
| |
| for (i = 0; i < ETH_ALEN; i++) { |
| if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) { |
| wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR |
| " for start address " MACSTR ".", |
| MAC2STR(mask), MAC2STR(hapd->own_addr)); |
| wpa_printf(MSG_ERROR, "Start address must be the " |
| "first address in the block (i.e., addr " |
| "AND mask == addr)."); |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| static int mac_in_conf(struct hostapd_config *conf, const void *a) |
| { |
| size_t i; |
| |
| for (i = 0; i < conf->num_bss; i++) { |
| if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) { |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| |
| |
| /** |
| * hostapd_setup_bss - Per-BSS setup (initialization) |
| * @hapd: Pointer to BSS data |
| * @first: Whether this BSS is the first BSS of an interface |
| * |
| * This function is used to initialize all per-BSS data structures and |
| * resources. This gets called in a loop for each BSS when an interface is |
| * initialized. Most of the modules that are initialized here will be |
| * deinitialized in hostapd_cleanup(). |
| */ |
| static int hostapd_setup_bss(struct hostapd_data *hapd, int first) |
| { |
| struct hostapd_bss_config *conf = hapd->conf; |
| u8 ssid[HOSTAPD_MAX_SSID_LEN + 1]; |
| int ssid_len, set_ssid; |
| char force_ifname[IFNAMSIZ]; |
| u8 if_addr[ETH_ALEN]; |
| |
| if (!first) { |
| if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) { |
| /* Allocate the next available BSSID. */ |
| do { |
| inc_byte_array(hapd->own_addr, ETH_ALEN); |
| } while (mac_in_conf(hapd->iconf, hapd->own_addr)); |
| } else { |
| /* Allocate the configured BSSID. */ |
| os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN); |
| |
| if (hostapd_mac_comp(hapd->own_addr, |
| hapd->iface->bss[0]->own_addr) == |
| 0) { |
| wpa_printf(MSG_ERROR, "BSS '%s' may not have " |
| "BSSID set to the MAC address of " |
| "the radio", hapd->conf->iface); |
| return -1; |
| } |
| } |
| |
| hapd->interface_added = 1; |
| if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS, |
| hapd->conf->iface, hapd->own_addr, hapd, |
| &hapd->drv_priv, force_ifname, if_addr, |
| hapd->conf->bridge[0] ? hapd->conf->bridge : |
| NULL)) { |
| wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID=" |
| MACSTR ")", MAC2STR(hapd->own_addr)); |
| return -1; |
| } |
| } |
| |
| if (conf->wmm_enabled < 0) |
| conf->wmm_enabled = hapd->iconf->ieee80211n; |
| |
| hostapd_flush_old_stations(hapd); |
| hostapd_set_privacy(hapd, 0); |
| |
| hostapd_broadcast_wep_clear(hapd); |
| if (hostapd_setup_encryption(hapd->conf->iface, hapd)) |
| return -1; |
| |
| /* |
| * Fetch the SSID from the system and use it or, |
| * if one was specified in the config file, verify they |
| * match. |
| */ |
| ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid)); |
| if (ssid_len < 0) { |
| wpa_printf(MSG_ERROR, "Could not read SSID from system"); |
| return -1; |
| } |
| if (conf->ssid.ssid_set) { |
| /* |
| * If SSID is specified in the config file and it differs |
| * from what is being used then force installation of the |
| * new SSID. |
| */ |
| set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len || |
| os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0); |
| } else { |
| /* |
| * No SSID in the config file; just use the one we got |
| * from the system. |
| */ |
| set_ssid = 0; |
| conf->ssid.ssid_len = ssid_len; |
| os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len); |
| conf->ssid.ssid[conf->ssid.ssid_len] = '\0'; |
| } |
| |
| if (!hostapd_drv_none(hapd)) { |
| wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR |
| " and ssid '%s'", |
| hapd->conf->iface, MAC2STR(hapd->own_addr), |
| hapd->conf->ssid.ssid); |
| } |
| |
| if (hostapd_setup_wpa_psk(conf)) { |
| wpa_printf(MSG_ERROR, "WPA-PSK setup failed."); |
| return -1; |
| } |
| |
| /* Set SSID for the kernel driver (to be used in beacon and probe |
| * response frames) */ |
| if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid, |
| conf->ssid.ssid_len)) { |
| wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); |
| return -1; |
| } |
| |
| if (wpa_debug_level == MSG_MSGDUMP) |
| conf->radius->msg_dumps = 1; |
| #ifndef CONFIG_NO_RADIUS |
| hapd->radius = radius_client_init(hapd, conf->radius); |
| if (hapd->radius == NULL) { |
| wpa_printf(MSG_ERROR, "RADIUS client initialization failed."); |
| return -1; |
| } |
| #endif /* CONFIG_NO_RADIUS */ |
| |
| if (hostapd_acl_init(hapd)) { |
| wpa_printf(MSG_ERROR, "ACL initialization failed."); |
| return -1; |
| } |
| if (hostapd_init_wps(hapd, conf)) |
| return -1; |
| |
| if (authsrv_init(hapd) < 0) |
| return -1; |
| |
| if (ieee802_1x_init(hapd)) { |
| wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed."); |
| return -1; |
| } |
| |
| if (hapd->conf->wpa && hostapd_setup_wpa(hapd)) |
| return -1; |
| |
| if (accounting_init(hapd)) { |
| wpa_printf(MSG_ERROR, "Accounting initialization failed."); |
| return -1; |
| } |
| |
| if (hapd->conf->ieee802_11f && |
| (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) { |
| wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization " |
| "failed."); |
| return -1; |
| } |
| |
| if (hapd->iface->ctrl_iface_init && |
| hapd->iface->ctrl_iface_init(hapd)) { |
| wpa_printf(MSG_ERROR, "Failed to setup control interface"); |
| return -1; |
| } |
| |
| if (!hostapd_drv_none(hapd) && vlan_init(hapd)) { |
| wpa_printf(MSG_ERROR, "VLAN initialization failed."); |
| return -1; |
| } |
| |
| ieee802_11_set_beacon(hapd); |
| |
| if (hapd->driver && hapd->driver->set_operstate) |
| hapd->driver->set_operstate(hapd->drv_priv, 1); |
| |
| return 0; |
| } |
| |
| |
| static void hostapd_tx_queue_params(struct hostapd_iface *iface) |
| { |
| struct hostapd_data *hapd = iface->bss[0]; |
| int i; |
| struct hostapd_tx_queue_params *p; |
| |
| for (i = 0; i < NUM_TX_QUEUES; i++) { |
| p = &iface->conf->tx_queue[i]; |
| |
| if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin, |
| p->cwmax, p->burst)) { |
| wpa_printf(MSG_DEBUG, "Failed to set TX queue " |
| "parameters for queue %d.", i); |
| /* Continue anyway */ |
| } |
| } |
| } |
| |
| |
| static int setup_interface(struct hostapd_iface *iface) |
| { |
| struct hostapd_data *hapd = iface->bss[0]; |
| size_t i; |
| char country[4]; |
| |
| /* |
| * Make sure that all BSSes get configured with a pointer to the same |
| * driver interface. |
| */ |
| for (i = 1; i < iface->num_bss; i++) { |
| iface->bss[i]->driver = hapd->driver; |
| iface->bss[i]->drv_priv = hapd->drv_priv; |
| } |
| |
| if (hostapd_validate_bssid_configuration(iface)) |
| return -1; |
| |
| if (hapd->iconf->country[0] && hapd->iconf->country[1]) { |
| os_memcpy(country, hapd->iconf->country, 3); |
| country[3] = '\0'; |
| if (hostapd_set_country(hapd, country) < 0) { |
| wpa_printf(MSG_ERROR, "Failed to set country code"); |
| return -1; |
| } |
| } |
| |
| if (hostapd_get_hw_features(iface)) { |
| /* Not all drivers support this yet, so continue without hw |
| * feature data. */ |
| } else { |
| int ret = hostapd_select_hw_mode(iface); |
| if (ret < 0) { |
| wpa_printf(MSG_ERROR, "Could not select hw_mode and " |
| "channel. (%d)", ret); |
| return -1; |
| } |
| ret = hostapd_check_ht_capab(iface); |
| if (ret < 0) |
| return -1; |
| if (ret == 1) { |
| wpa_printf(MSG_DEBUG, "Interface initialization will " |
| "be completed in a callback"); |
| return 0; |
| } |
| } |
| return hostapd_setup_interface_complete(iface, 0); |
| } |
| |
| |
| int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err) |
| { |
| struct hostapd_data *hapd = iface->bss[0]; |
| size_t j; |
| u8 *prev_addr; |
| |
| if (err) { |
| wpa_printf(MSG_ERROR, "Interface initialization failed"); |
| eloop_terminate(); |
| return -1; |
| } |
| |
| wpa_printf(MSG_DEBUG, "Completing interface initialization"); |
| if (hapd->iconf->channel) { |
| iface->freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel); |
| wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d " |
| "Frequency: %d MHz", |
| hostapd_hw_mode_txt(hapd->iconf->hw_mode), |
| hapd->iconf->channel, iface->freq); |
| |
| if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq, |
| hapd->iconf->channel, |
| hapd->iconf->ieee80211n, |
| hapd->iconf->secondary_channel)) { |
| wpa_printf(MSG_ERROR, "Could not set channel for " |
| "kernel driver"); |
| return -1; |
| } |
| } |
| |
| if (iface->current_mode) { |
| if (hostapd_prepare_rates(hapd, iface->current_mode)) { |
| wpa_printf(MSG_ERROR, "Failed to prepare rates " |
| "table."); |
| hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, |
| HOSTAPD_LEVEL_WARNING, |
| "Failed to prepare rates table."); |
| return -1; |
| } |
| } |
| |
| if (hapd->iconf->rts_threshold > -1 && |
| hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) { |
| wpa_printf(MSG_ERROR, "Could not set RTS threshold for " |
| "kernel driver"); |
| return -1; |
| } |
| |
| if (hapd->iconf->fragm_threshold > -1 && |
| hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) { |
| wpa_printf(MSG_ERROR, "Could not set fragmentation threshold " |
| "for kernel driver"); |
| return -1; |
| } |
| |
| prev_addr = hapd->own_addr; |
| |
| for (j = 0; j < iface->num_bss; j++) { |
| hapd = iface->bss[j]; |
| if (j) |
| os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN); |
| if (hostapd_setup_bss(hapd, j == 0)) |
| return -1; |
| if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) |
| prev_addr = hapd->own_addr; |
| } |
| |
| hostapd_tx_queue_params(iface); |
| |
| ap_list_init(iface); |
| |
| if (hostapd_driver_commit(hapd) < 0) { |
| wpa_printf(MSG_ERROR, "%s: Failed to commit driver " |
| "configuration", __func__); |
| return -1; |
| } |
| |
| /* |
| * WPS UPnP module can be initialized only when the "upnp_iface" is up. |
| * If "interface" and "upnp_iface" are the same (e.g., non-bridge |
| * mode), the interface is up only after driver_commit, so initialize |
| * WPS after driver_commit. |
| */ |
| for (j = 0; j < iface->num_bss; j++) { |
| if (hostapd_init_wps_complete(iface->bss[j])) |
| return -1; |
| } |
| |
| if (hapd->setup_complete_cb) |
| hapd->setup_complete_cb(hapd->setup_complete_cb_ctx); |
| |
| wpa_printf(MSG_DEBUG, "%s: Setup of interface done.", |
| iface->bss[0]->conf->iface); |
| |
| return 0; |
| } |
| |
| |
| /** |
| * hostapd_setup_interface - Setup of an interface |
| * @iface: Pointer to interface data. |
| * Returns: 0 on success, -1 on failure |
| * |
| * Initializes the driver interface, validates the configuration, |
| * and sets driver parameters based on the configuration. |
| * Flushes old stations, sets the channel, encryption, |
| * beacons, and WDS links based on the configuration. |
| */ |
| int hostapd_setup_interface(struct hostapd_iface *iface) |
| { |
| int ret; |
| |
| ret = setup_interface(iface); |
| if (ret) { |
| wpa_printf(MSG_ERROR, "%s: Unable to setup interface.", |
| iface->bss[0]->conf->iface); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| |
| /** |
| * hostapd_alloc_bss_data - Allocate and initialize per-BSS data |
| * @hapd_iface: Pointer to interface data |
| * @conf: Pointer to per-interface configuration |
| * @bss: Pointer to per-BSS configuration for this BSS |
| * Returns: Pointer to allocated BSS data |
| * |
| * This function is used to allocate per-BSS data structure. This data will be |
| * freed after hostapd_cleanup() is called for it during interface |
| * deinitialization. |
| */ |
| struct hostapd_data * |
| hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface, |
| struct hostapd_config *conf, |
| struct hostapd_bss_config *bss) |
| { |
| struct hostapd_data *hapd; |
| |
| hapd = os_zalloc(sizeof(*hapd)); |
| if (hapd == NULL) |
| return NULL; |
| |
| hapd->new_assoc_sta_cb = hostapd_new_assoc_sta; |
| hapd->iconf = conf; |
| hapd->conf = bss; |
| hapd->iface = hapd_iface; |
| hapd->driver = hapd->iconf->driver; |
| |
| return hapd; |
| } |
| |
| |
| void hostapd_interface_deinit(struct hostapd_iface *iface) |
| { |
| size_t j; |
| |
| if (iface == NULL) |
| return; |
| |
| hostapd_cleanup_iface_pre(iface); |
| for (j = 0; j < iface->num_bss; j++) { |
| struct hostapd_data *hapd = iface->bss[j]; |
| hostapd_free_stas(hapd); |
| hostapd_flush_old_stations(hapd); |
| hostapd_cleanup(hapd); |
| } |
| } |
| |
| |
| void hostapd_interface_free(struct hostapd_iface *iface) |
| { |
| size_t j; |
| for (j = 0; j < iface->num_bss; j++) |
| os_free(iface->bss[j]); |
| hostapd_cleanup_iface(iface); |
| } |
| |
| |
| /** |
| * hostapd_new_assoc_sta - Notify that a new station associated with the AP |
| * @hapd: Pointer to BSS data |
| * @sta: Pointer to the associated STA data |
| * @reassoc: 1 to indicate this was a re-association; 0 = first association |
| * |
| * This function will be called whenever a station associates with the AP. It |
| * can be called from ieee802_11.c for drivers that export MLME to hostapd and |
| * from drv_callbacks.c based on driver events for drivers that take care of |
| * management frames (IEEE 802.11 authentication and association) internally. |
| */ |
| void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta, |
| int reassoc) |
| { |
| if (hapd->tkip_countermeasures) { |
| hostapd_drv_sta_deauth(hapd, sta->addr, |
| WLAN_REASON_MICHAEL_MIC_FAILURE); |
| return; |
| } |
| |
| hostapd_prune_associations(hapd, sta->addr); |
| |
| /* IEEE 802.11F (IAPP) */ |
| if (hapd->conf->ieee802_11f) |
| iapp_new_station(hapd->iapp, sta); |
| |
| #ifdef CONFIG_P2P |
| if (sta->p2p_ie == NULL && !sta->no_p2p_set) { |
| sta->no_p2p_set = 1; |
| hapd->num_sta_no_p2p++; |
| if (hapd->num_sta_no_p2p == 1) |
| hostapd_p2p_non_p2p_sta_connected(hapd); |
| } |
| #endif /* CONFIG_P2P */ |
| |
| /* Start accounting here, if IEEE 802.1X and WPA are not used. |
| * IEEE 802.1X/WPA code will start accounting after the station has |
| * been authorized. */ |
| if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) |
| accounting_sta_start(hapd, sta); |
| |
| /* Start IEEE 802.1X authentication process for new stations */ |
| ieee802_1x_new_station(hapd, sta); |
| if (reassoc) { |
| if (sta->auth_alg != WLAN_AUTH_FT && |
| !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) |
| wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH); |
| } else |
| wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm); |
| } |