blob: b67396d5a15e52edb449cd7e83f1ffb53a28124e [file] [log] [blame]
/*
* WPA Supplicant - Basic mesh mode routines
* Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "utils/uuid.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "common/hw_features_common.h"
#include "ap/sta_info.h"
#include "ap/hostapd.h"
#include "ap/ieee802_11.h"
#include "config_ssid.h"
#include "config.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "notify.h"
#include "ap.h"
#include "mesh_mpm.h"
#include "mesh_rsn.h"
#include "mesh.h"
static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s,
bool also_clear_hostapd)
{
wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh,
also_clear_hostapd);
if (also_clear_hostapd) {
wpa_s->ifmsh = NULL;
wpa_s->current_ssid = NULL;
os_free(wpa_s->mesh_params);
wpa_s->mesh_params = NULL;
}
os_free(wpa_s->mesh_rsn);
wpa_s->mesh_rsn = NULL;
if (!also_clear_hostapd)
wpa_supplicant_leave_mesh(wpa_s, false);
}
void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
struct hostapd_iface *ifmsh,
bool also_clear_hostapd)
{
if (!ifmsh)
return;
if (ifmsh->mconf) {
mesh_mpm_deinit(wpa_s, ifmsh);
if (ifmsh->mconf->rsn_ie) {
ifmsh->mconf->rsn_ie = NULL;
/* We cannot free this struct
* because wpa_authenticator on
* hostapd side is also using it
* for now just set to NULL and
* let hostapd code free it.
*/
}
os_free(ifmsh->mconf);
ifmsh->mconf = NULL;
}
/* take care of shared data */
if (also_clear_hostapd) {
hostapd_interface_deinit(ifmsh);
hostapd_interface_free(ifmsh);
}
}
static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
struct mesh_conf *conf;
int cipher;
conf = os_zalloc(sizeof(struct mesh_conf));
if (!conf)
return NULL;
os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
conf->meshid_len = ssid->ssid_len;
if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
conf->security |= MESH_CONF_SEC_AUTH |
MESH_CONF_SEC_AMPE;
else
conf->security |= MESH_CONF_SEC_NONE;
conf->ieee80211w = ssid->ieee80211w;
if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
conf->ieee80211w = wpa_s->conf->pmf;
else
conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
}
#ifdef CONFIG_OCV
conf->ocv = ssid->ocv;
#endif /* CONFIG_OCV */
cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
os_free(conf);
return NULL;
}
conf->pairwise_cipher = cipher;
cipher = wpa_pick_group_cipher(ssid->group_cipher);
if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
cipher == WPA_CIPHER_GTK_NOT_USED) {
wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
os_free(conf);
return NULL;
}
conf->group_cipher = cipher;
if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
if (ssid->group_mgmt_cipher == WPA_CIPHER_BIP_GMAC_128 ||
ssid->group_mgmt_cipher == WPA_CIPHER_BIP_GMAC_256 ||
ssid->group_mgmt_cipher == WPA_CIPHER_BIP_CMAC_256)
conf->mgmt_group_cipher = ssid->group_mgmt_cipher;
else
conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
}
/* defaults */
conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
conf->mesh_cc_id = 0;
conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
conf->mesh_fwding = ssid->mesh_fwding;
conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
return conf;
}
static void wpas_mesh_copy_groups(struct hostapd_data *bss,
struct wpa_supplicant *wpa_s)
{
int num_groups;
size_t groups_size;
for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
num_groups++)
;
groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
bss->conf->sae_groups = os_malloc(groups_size);
if (bss->conf->sae_groups)
os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
groups_size);
}
static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
{
struct hostapd_iface *ifmsh = wpa_s->ifmsh;
struct wpa_ssid *ssid = wpa_s->current_ssid;
struct hostapd_data *bss = ifmsh->bss[0];
static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
const char *password;
size_t len;
password = ssid->sae_password;
if (!password)
password = ssid->passphrase;
if (!password) {
wpa_printf(MSG_ERROR,
"mesh: Passphrase for SAE not configured");
return -1;
}
bss->conf->wpa = ssid->proto;
bss->conf->wpa_key_mgmt = ssid->key_mgmt;
if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) {
wpas_mesh_copy_groups(bss, wpa_s);
} else {
bss->conf->sae_groups = os_memdup(default_groups,
sizeof(default_groups));
if (!bss->conf->sae_groups)
return -1;
}
len = os_strlen(password);
bss->conf->ssid.wpa_passphrase = dup_binstr(password, len);
wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf);
return !wpa_s->mesh_rsn ? -1 : 0;
}
static int wpas_mesh_update_freq_params(struct wpa_supplicant *wpa_s)
{
struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
struct hostapd_iface *ifmsh = wpa_s->ifmsh;
struct he_capabilities *he_capab = NULL;
if (ifmsh->current_mode)
he_capab = &ifmsh->current_mode->he_capab[IEEE80211_MODE_MESH];
if (hostapd_set_freq_params(
&params->freq,
ifmsh->conf->hw_mode,
ifmsh->freq,
ifmsh->conf->channel,
ifmsh->conf->enable_edmg,
ifmsh->conf->edmg_channel,
ifmsh->conf->ieee80211n,
ifmsh->conf->ieee80211ac,
ifmsh->conf->ieee80211ax,
false,
ifmsh->conf->secondary_channel,
hostapd_get_oper_chwidth(ifmsh->conf),
hostapd_get_oper_centr_freq_seg0_idx(ifmsh->conf),
hostapd_get_oper_centr_freq_seg1_idx(ifmsh->conf),
ifmsh->conf->vht_capab,
he_capab, NULL)) {
wpa_printf(MSG_ERROR, "Error updating mesh frequency params");
wpa_supplicant_mesh_deinit(wpa_s, true);
return -1;
}
return 0;
}
static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
{
struct hostapd_iface *ifmsh = wpa_s->ifmsh;
struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
struct wpa_ssid *ssid = wpa_s->current_ssid;
int ret;
if (!params || !ssid || !ifmsh) {
wpa_printf(MSG_ERROR, "mesh: %s called without active mesh",
__func__);
return -1;
}
/*
* Update channel configuration if the channel has changed since the
* initial setting, i.e., due to DFS radar detection during CAC.
*/
if (ifmsh->freq > 0 && ifmsh->freq != params->freq.freq) {
wpa_s->assoc_freq = ifmsh->freq;
ssid->frequency = ifmsh->freq;
if (wpas_mesh_update_freq_params(wpa_s) < 0)
return -1;
}
if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
wpas_mesh_init_rsn(wpa_s)) {
wpa_printf(MSG_ERROR,
"mesh: RSN initialization failed - deinit mesh");
wpa_supplicant_mesh_deinit(wpa_s, false);
return -1;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
}
params->ies = ifmsh->mconf->rsn_ie;
params->ie_len = ifmsh->mconf->rsn_ie_len;
params->basic_rates = ifmsh->basic_rates;
params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode;
wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
ret = wpa_drv_join_mesh(wpa_s, params);
if (ret)
wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
/* hostapd sets the interface down until we associate */
wpa_drv_set_operstate(wpa_s, 1);
if (!ret) {
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_STARTED "ssid=\"%s\" id=%d",
wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
ssid->id);
wpas_notify_mesh_group_started(wpa_s, ssid);
}
return ret;
}
static void wpas_mesh_complete_cb(void *arg)
{
struct wpa_supplicant *wpa_s = arg;
wpas_mesh_complete(wpa_s);
}
static int wpa_supplicant_mesh_enable_iface_cb(struct hostapd_iface *ifmsh)
{
struct wpa_supplicant *wpa_s = ifmsh->owner;
struct hostapd_data *bss;
ifmsh->mconf = mesh_config_create(wpa_s, wpa_s->current_ssid);
bss = ifmsh->bss[0];
bss->msg_ctx = wpa_s;
os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
bss->driver = wpa_s->driver;
bss->drv_priv = wpa_s->drv_priv;
bss->iface = ifmsh;
bss->mesh_sta_free_cb = mesh_mpm_free_sta;
bss->setup_complete_cb = wpas_mesh_complete_cb;
bss->setup_complete_cb_ctx = wpa_s;
bss->conf->start_disabled = 1;
bss->conf->mesh = MESH_ENABLED;
bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
if (wpa_drv_init_mesh(wpa_s)) {
wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
return -1;
}
if (hostapd_setup_interface(ifmsh)) {
wpa_printf(MSG_ERROR,
"Failed to initialize hostapd interface for mesh");
return -1;
}
return 0;
}
static int wpa_supplicant_mesh_disable_iface_cb(struct hostapd_iface *ifmsh)
{
struct wpa_supplicant *wpa_s = ifmsh->owner;
size_t j;
wpa_supplicant_mesh_deinit(wpa_s, false);
#ifdef NEED_AP_MLME
for (j = 0; j < ifmsh->num_bss; j++)
hostapd_cleanup_cs_params(ifmsh->bss[j]);
#endif /* NEED_AP_MLME */
/* Same as hostapd_interface_deinit() without deinitializing control
* interface */
for (j = 0; j < ifmsh->num_bss; j++) {
struct hostapd_data *hapd = ifmsh->bss[j];
hostapd_bss_deinit_no_free(hapd);
hostapd_free_hapd_data(hapd);
}
hostapd_cleanup_iface_partial(ifmsh);
return 0;
}
static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
struct hostapd_freq_params *freq)
{
struct hostapd_iface *ifmsh;
struct hostapd_data *bss;
struct hostapd_config *conf;
struct mesh_conf *mconf;
int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
int rate_len;
int frequency;
if (!wpa_s->conf->user_mpm) {
/* not much for us to do here */
wpa_msg(wpa_s, MSG_WARNING,
"user_mpm is not enabled in configuration");
return 0;
}
wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
if (!ifmsh)
return -ENOMEM;
ifmsh->owner = wpa_s;
ifmsh->drv_flags = wpa_s->drv_flags;
ifmsh->drv_flags2 = wpa_s->drv_flags2;
ifmsh->num_bss = 1;
ifmsh->enable_iface_cb = wpa_supplicant_mesh_enable_iface_cb;
ifmsh->disable_iface_cb = wpa_supplicant_mesh_disable_iface_cb;
ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
sizeof(struct hostapd_data *));
if (!ifmsh->bss)
goto out_free;
ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
if (!bss)
goto out_free;
ifmsh->bss[0]->msg_ctx = wpa_s;
os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
bss->driver = wpa_s->driver;
bss->drv_priv = wpa_s->drv_priv;
bss->iface = ifmsh;
bss->mesh_sta_free_cb = mesh_mpm_free_sta;
bss->setup_complete_cb = wpas_mesh_complete_cb;
bss->setup_complete_cb_ctx = wpa_s;
frequency = ssid->frequency;
if (frequency != freq->freq &&
frequency == freq->freq + freq->sec_channel_offset * 20) {
wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
frequency = freq->freq;
ssid->frequency = frequency;
}
wpa_s->assoc_freq = frequency;
wpa_s->current_ssid = ssid;
/* setup an AP config for auth processing */
conf = hostapd_config_defaults();
if (!conf)
goto out_free;
if (is_6ghz_freq(freq->freq)) {
/*
* IEEE Std 802.11ax-2021, 12.12.2:
* The STA shall use management frame protection (MFPR=1) when
* using RSN.
*/
ssid->ieee80211w = MGMT_FRAME_PROTECTION_REQUIRED;
/* Set mandatory op_class parameter for setting up BSS */
switch (freq->bandwidth) {
case 20:
if (freq->freq == 5935)
conf->op_class = 136;
else
conf->op_class = 131;
break;
case 40:
conf->op_class = 132;
break;
case 80:
conf->op_class = 133;
break;
case 160:
conf->op_class = 134;
break;
default:
conf->op_class = 131;
break;
}
}
bss->conf = *conf->bss;
bss->conf->start_disabled = 1;
bss->conf->mesh = MESH_ENABLED;
bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
bss->conf->mesh_fwding = wpa_s->conf->mesh_fwding;
if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
conf->ieee80211h = 1;
conf->ieee80211d = 1;
conf->country[0] = wpa_s->conf->country[0];
conf->country[1] = wpa_s->conf->country[1];
conf->country[2] = ' ';
wpa_s->mesh_params->handle_dfs = true;
}
bss->iconf = conf;
ifmsh->conf = conf;
ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
ifmsh->bss[0]->dot11RSNASAERetransPeriod =
wpa_s->conf->dot11RSNASAERetransPeriod;
os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
mconf = mesh_config_create(wpa_s, ssid);
if (!mconf)
goto out_free;
ifmsh->mconf = mconf;
/* need conf->hw_mode for supported rates. */
conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
if (conf->hw_mode == NUM_HOSTAPD_MODES) {
wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
frequency);
goto out_free;
}
if (ssid->mesh_basic_rates == NULL) {
/*
* XXX: Hack! This is so an MPM which correctly sets the ERP
* mandatory rates as BSSBasicRateSet doesn't reject us. We
* could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
* this is way easier. This also makes our BSSBasicRateSet
* advertised in beacons match the one in peering frames, sigh.
*/
if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
conf->basic_rates = os_memdup(basic_rates_erp,
sizeof(basic_rates_erp));
if (!conf->basic_rates)
goto out_free;
}
} else {
rate_len = 0;
while (1) {
if (ssid->mesh_basic_rates[rate_len] < 1)
break;
rate_len++;
}
conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
if (conf->basic_rates == NULL)
goto out_free;
os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
rate_len * sizeof(int));
conf->basic_rates[rate_len] = -1;
}
/* While it can enhance performance to switch the primary channel, which
* is also the secondary channel of another network at the same time),
* to the other primary channel, problems exist with this in mesh
* networks.
*
* Example with problems:
* - 3 mesh nodes M1-M3, freq (5200, 5180)
* - other node O1, e.g. AP mode, freq (5180, 5200),
* Locations: O1 M1 M2 M3
*
* M3 can only send frames to M1 over M2, no direct connection is
* possible
* Start O1, M1 and M3 first, M1 or O1 will switch channels to align
* with* each other. M3 does not swap, because M1 or O1 cannot be
* reached. M2 is started afterwards and can either connect to M3 or M1
* because of this primary secondary channel switch.
*
* Solutions: (1) central coordination -> not always possible
* (2) disable pri/sec channel switch in mesh networks
*
* In AP mode, when all nodes can work independently, this poses of
* course no problem, therefore disable it only in mesh mode. */
conf->no_pri_sec_switch = 1;
wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
if (wpa_drv_init_mesh(wpa_s)) {
wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
return -1;
}
if (hostapd_setup_interface(ifmsh)) {
wpa_printf(MSG_ERROR,
"Failed to initialize hostapd interface for mesh");
return -1;
}
return 0;
out_free:
wpa_supplicant_mesh_deinit(wpa_s, true);
return -ENOMEM;
}
void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
const u8 *ies, size_t ie_len)
{
struct ieee802_11_elems elems;
wpa_msg(wpa_s, MSG_INFO,
"new peer notification for " MACSTR, MAC2STR(addr));
if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
MAC2STR(addr));
return;
}
wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
}
void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
struct wpabuf **extra_ie)
{
/* EID + 0-length (wildcard) mesh-id */
size_t ielen = 2;
if (wpabuf_resize(extra_ie, ielen) == 0) {
wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
wpabuf_put_u8(*extra_ie, 0);
}
}
int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
int ret = 0;
if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
!params) {
ret = -ENOENT;
os_free(params);
goto out;
}
wpa_supplicant_mesh_deinit(wpa_s, true);
wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
wpa_s->group_cipher = WPA_CIPHER_NONE;
wpa_s->mgmt_group_cipher = 0;
params->meshid = ssid->ssid;
params->meshid_len = ssid->ssid_len;
ibss_mesh_setup_freq(wpa_s, ssid, &params->freq);
wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
wpa_s->mesh_he_enabled = !!params->freq.he_enabled;
if (params->freq.ht_enabled && params->freq.sec_channel_offset)
ssid->ht40 = params->freq.sec_channel_offset;
if (wpa_s->mesh_vht_enabled) {
ssid->vht = 1;
ssid->vht_center_freq1 = params->freq.center_freq1;
switch (params->freq.bandwidth) {
case 80:
if (params->freq.center_freq2) {
ssid->max_oper_chwidth = CHANWIDTH_80P80MHZ;
ssid->vht_center_freq2 =
params->freq.center_freq2;
} else {
ssid->max_oper_chwidth = CHANWIDTH_80MHZ;
}
break;
case 160:
ssid->max_oper_chwidth = CHANWIDTH_160MHZ;
break;
default:
ssid->max_oper_chwidth = CHANWIDTH_USE_HT;
break;
}
}
if (wpa_s->mesh_he_enabled)
ssid->he = 1;
if (ssid->beacon_int > 0)
params->beacon_int = ssid->beacon_int;
else if (wpa_s->conf->beacon_int > 0)
params->beacon_int = wpa_s->conf->beacon_int;
if (ssid->dtim_period > 0)
params->dtim_period = ssid->dtim_period;
else if (wpa_s->conf->dtim_period > 0)
params->dtim_period = wpa_s->conf->dtim_period;
params->conf.max_peer_links = wpa_s->conf->max_peer_links;
if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
wpa_s->conf->user_mpm = 1;
}
if (wpa_s->conf->user_mpm) {
params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
params->conf.auto_plinks = 0;
} else {
params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
params->conf.auto_plinks = 1;
}
params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
/* Always explicitely set forwarding to on or off for now */
params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_FORWARDING;
params->conf.forwarding = ssid->mesh_fwding;
os_free(wpa_s->mesh_params);
wpa_s->mesh_params = params;
if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
wpa_supplicant_leave_mesh(wpa_s, true);
ret = -1;
goto out;
}
out:
return ret;
}
int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s, bool need_deinit)
{
int ret = 0;
wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
/* Need to send peering close messages first */
if (need_deinit)
wpa_supplicant_mesh_deinit(wpa_s, true);
ret = wpa_drv_leave_mesh(wpa_s);
if (ret)
wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
wpa_drv_set_operstate(wpa_s, 1);
return ret;
}
static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
{
struct ieee802_11_elems elems;
char *mesh_id, *pos = buf;
u8 *bss_basic_rate_set;
int bss_basic_rate_set_len, ret, i;
if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
return -1;
if (elems.mesh_id_len < 1)
return 0;
mesh_id = os_malloc(elems.mesh_id_len + 1);
if (mesh_id == NULL)
return -1;
os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
mesh_id[elems.mesh_id_len] = '\0';
ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
os_free(mesh_id);
if (os_snprintf_error(end - pos, ret))
return pos - buf;
pos += ret;
if (elems.mesh_config_len > 6) {
ret = os_snprintf(pos, end - pos,
"active_path_selection_protocol_id=0x%02x\n"
"active_path_selection_metric_id=0x%02x\n"
"congestion_control_mode_id=0x%02x\n"
"synchronization_method_id=0x%02x\n"
"authentication_protocol_id=0x%02x\n"
"mesh_formation_info=0x%02x\n"
"mesh_capability=0x%02x\n",
elems.mesh_config[0], elems.mesh_config[1],
elems.mesh_config[2], elems.mesh_config[3],
elems.mesh_config[4], elems.mesh_config[5],
elems.mesh_config[6]);
if (os_snprintf_error(end - pos, ret))
return pos - buf;
pos += ret;
}
bss_basic_rate_set = os_malloc(elems.supp_rates_len +
elems.ext_supp_rates_len);
if (bss_basic_rate_set == NULL)
return -1;
bss_basic_rate_set_len = 0;
for (i = 0; i < elems.supp_rates_len; i++) {
if (elems.supp_rates[i] & 0x80) {
bss_basic_rate_set[bss_basic_rate_set_len++] =
(elems.supp_rates[i] & 0x7f) * 5;
}
}
for (i = 0; i < elems.ext_supp_rates_len; i++) {
if (elems.ext_supp_rates[i] & 0x80) {
bss_basic_rate_set[bss_basic_rate_set_len++] =
(elems.ext_supp_rates[i] & 0x7f) * 5;
}
}
if (bss_basic_rate_set_len > 0) {
ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
bss_basic_rate_set[0]);
if (os_snprintf_error(end - pos, ret))
goto fail;
pos += ret;
for (i = 1; i < bss_basic_rate_set_len; i++) {
ret = os_snprintf(pos, end - pos, " %d",
bss_basic_rate_set[i]);
if (os_snprintf_error(end - pos, ret))
goto fail;
pos += ret;
}
ret = os_snprintf(pos, end - pos, "\n");
if (os_snprintf_error(end - pos, ret))
goto fail;
pos += ret;
}
fail:
os_free(bss_basic_rate_set);
return pos - buf;
}
int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
char *end)
{
return mesh_attr_text(ies, ies_len, buf, end);
}
static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
size_t len)
{
char *ifname_ptr = wpa_s->ifname;
int res;
res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
wpa_s->mesh_if_idx);
if (os_snprintf_error(len, res) ||
(os_strlen(ifname) >= IFNAMSIZ &&
os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
/* Try to avoid going over the IFNAMSIZ length limit */
res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
if (os_snprintf_error(len, res))
return -1;
}
wpa_s->mesh_if_idx++;
return 0;
}
int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
size_t len)
{
struct wpa_interface iface;
struct wpa_supplicant *mesh_wpa_s;
u8 addr[ETH_ALEN];
if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
return -1;
if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
NULL) < 0) {
wpa_printf(MSG_ERROR,
"mesh: Failed to create new mesh interface");
return -1;
}
wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
MACSTR, ifname, MAC2STR(addr));
os_memset(&iface, 0, sizeof(iface));
iface.ifname = ifname;
iface.driver = wpa_s->driver->name;
iface.driver_param = wpa_s->conf->driver_param;
iface.ctrl_interface = wpa_s->conf->ctrl_interface;
mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
if (!mesh_wpa_s) {
wpa_printf(MSG_ERROR,
"mesh: Failed to create new wpa_supplicant interface");
wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
return -1;
}
mesh_wpa_s->mesh_if_created = 1;
return 0;
}
int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
{
return mesh_mpm_close_peer(wpa_s, addr);
}
int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
int duration)
{
return mesh_mpm_connect_peer(wpa_s, addr, duration);
}