mesh: Add mesh mode routines
Add routines to (de)initialize mesh interface data structures and join and leave mesh networks. Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Jason Mobarak <x@jason.mobarak.name> Signed-off-by: Thomas Pedersen <thomas@noack.us>master
Thomas Pedersen
10 years ago
committed by
Jouni Malinen
parent
5551bc9cb2
commit
8319e3120d
@ -0,0 +1,315 @@
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/*
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* WPA Supplicant - Basic mesh mode routines
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* Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "utils/eloop.h"
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#include "utils/uuid.h"
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#include "common/ieee802_11_defs.h"
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#include "common/wpa_ctrl.h"
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#include "ap/sta_info.h"
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#include "ap/hostapd.h"
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#include "ap/ieee802_11.h"
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#include "config_ssid.h"
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#include "config.h"
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#include "wpa_supplicant_i.h"
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#include "driver_i.h"
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#include "notify.h"
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#include "mesh.h"
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static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
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{
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wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
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wpa_s->ifmsh = NULL;
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wpa_s->current_ssid = NULL;
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/* TODO: leave mesh (stop beacon). This will happen on link down
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* anyway, so it's not urgent */
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}
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void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
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struct hostapd_iface *ifmsh)
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{
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if (!ifmsh)
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return;
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if (ifmsh->mconf) {
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if (ifmsh->mconf->ies) {
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ifmsh->mconf->ies = NULL;
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/* We cannot free this struct
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* because wpa_authenticator on
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* hostapd side is also using it
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* for now just set to NULL and
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* let hostapd code free it.
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*/
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}
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os_free(ifmsh->mconf);
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ifmsh->mconf = NULL;
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}
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/* take care of shared data */
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hostapd_interface_deinit(ifmsh);
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hostapd_interface_free(ifmsh);
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}
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static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
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{
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struct mesh_conf *conf;
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conf = os_zalloc(sizeof(struct mesh_conf));
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if (!conf)
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return NULL;
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os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
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conf->meshid_len = ssid->ssid_len;
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if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
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conf->security |= MESH_CONF_SEC_AUTH |
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MESH_CONF_SEC_AMPE;
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else
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conf->security |= MESH_CONF_SEC_NONE;
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/* defaults */
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conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
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conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
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conf->mesh_cc_id = 0;
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conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
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conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
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return conf;
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}
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static void wpas_mesh_copy_groups(struct hostapd_data *bss,
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struct wpa_supplicant *wpa_s)
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{
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int num_groups;
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size_t groups_size;
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for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
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num_groups++)
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;
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groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
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bss->conf->sae_groups = os_malloc(groups_size);
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if (bss->conf->sae_groups)
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os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
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groups_size);
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}
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static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
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struct wpa_ssid *ssid)
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{
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struct hostapd_iface *ifmsh;
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struct hostapd_data *bss;
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struct hostapd_config *conf;
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struct mesh_conf *mconf;
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int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
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static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
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size_t len;
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wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
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if (!ifmsh)
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return -ENOMEM;
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ifmsh->num_bss = 1;
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ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
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sizeof(struct hostapd_data *));
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if (!ifmsh->bss)
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goto out_free;
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ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
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if (!bss)
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goto out_free;
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os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
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bss->driver = wpa_s->driver;
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bss->drv_priv = wpa_s->drv_priv;
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bss->iface = ifmsh;
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wpa_s->assoc_freq = ssid->frequency;
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wpa_s->current_ssid = ssid;
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/* setup an AP config for auth processing */
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conf = hostapd_config_defaults();
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if (!conf)
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goto out_free;
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bss->conf = *conf->bss;
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bss->conf->start_disabled = 1;
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bss->conf->mesh = MESH_ENABLED;
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bss->iconf = conf;
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ifmsh->conf = conf;
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os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
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mconf = mesh_config_create(ssid);
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if (!mconf)
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goto out_free;
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ifmsh->mconf = mconf;
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/* need conf->hw_mode for supported rates. */
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if (ssid->frequency == 0) {
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conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
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conf->channel = 1;
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} else {
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conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
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&conf->channel);
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}
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if (conf->hw_mode == NUM_HOSTAPD_MODES) {
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wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
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ssid->frequency);
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goto out_free;
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}
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/*
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* XXX: Hack! This is so an MPM which correctly sets the ERP mandatory
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* rates as BSSBasicRateSet doesn't reject us. We could add a new
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* hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but this is way easier. This
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* also makes our BSSBasicRateSet advertised in Beacon frames match the
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* one in peering frames, sigh.
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*/
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if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
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conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
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if (!conf->basic_rates)
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goto out_free;
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os_memcpy(conf->basic_rates, basic_rates_erp,
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sizeof(basic_rates_erp));
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}
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if (hostapd_setup_interface(ifmsh)) {
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wpa_printf(MSG_ERROR,
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"Failed to initialize hostapd interface for mesh");
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return -1;
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}
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if (wpa_drv_init_mesh(wpa_s)) {
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wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
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return -1;
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}
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if (mconf->security != MESH_CONF_SEC_NONE) {
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if (ssid->passphrase == NULL) {
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wpa_printf(MSG_ERROR,
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"mesh: Passphrase for SAE not configured");
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goto out_free;
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}
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bss->conf->wpa = ssid->proto;
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bss->conf->wpa_key_mgmt = ssid->key_mgmt;
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if (wpa_s->conf->sae_groups &&
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wpa_s->conf->sae_groups[0] > 0) {
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wpas_mesh_copy_groups(bss, wpa_s);
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} else {
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bss->conf->sae_groups =
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os_malloc(sizeof(default_groups));
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if (!bss->conf->sae_groups)
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goto out_free;
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os_memcpy(bss->conf->sae_groups, default_groups,
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sizeof(default_groups));
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}
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len = os_strlen(ssid->passphrase);
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bss->conf->ssid.wpa_passphrase =
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dup_binstr(ssid->passphrase, len);
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}
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return 0;
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out_free:
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wpa_supplicant_mesh_deinit(wpa_s);
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return -ENOMEM;
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}
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void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
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const u8 *ies, size_t ie_len)
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{
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struct ieee802_11_elems elems;
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wpa_msg(wpa_s, MSG_INFO,
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"new peer notification for " MACSTR, MAC2STR(addr));
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if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
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wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
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MAC2STR(addr));
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}
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}
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int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
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struct wpa_ssid *ssid)
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{
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struct wpa_driver_mesh_join_params params;
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int ret = 0;
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if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
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ret = -ENOENT;
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goto out;
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}
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wpa_supplicant_mesh_deinit(wpa_s);
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os_memset(¶ms, 0, sizeof(params));
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params.meshid = ssid->ssid;
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params.meshid_len = ssid->ssid_len;
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params.freq = ssid->frequency;
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if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
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params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
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params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
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}
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params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
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params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
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if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
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wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
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ret = -1;
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goto out;
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}
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if (wpa_s->ifmsh) {
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params.ies = wpa_s->ifmsh->mconf->ies;
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params.ie_len = wpa_s->ifmsh->mconf->ie_len;
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params.basic_rates = wpa_s->ifmsh->basic_rates;
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}
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wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
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wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
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ret = wpa_drv_join_mesh(wpa_s, ¶ms);
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if (ret)
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wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
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/* hostapd sets the interface down until we associate */
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wpa_drv_set_operstate(wpa_s, 1);
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out:
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return ret;
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}
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int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
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{
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int ret = 0;
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wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
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ret = wpa_drv_leave_mesh(wpa_s);
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if (ret)
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wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
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wpa_drv_set_operstate(wpa_s, 1);
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wpa_supplicant_mesh_deinit(wpa_s);
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return ret;
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}
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@ -0,0 +1,33 @@
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/*
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* WPA Supplicant - Basic mesh mode routines
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* Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef MESH_H
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#define MESH_H
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int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
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struct wpa_ssid *ssid);
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int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s);
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void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
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struct hostapd_iface *ifmsh);
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#ifdef CONFIG_MESH
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void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
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const u8 *ies, size_t ie_len);
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#else /* CONFIG_MESH */
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static inline void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s,
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const u8 *addr,
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const u8 *ies, size_t ie_len)
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{
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}
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#endif /* CONFIG_MESH */
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#endif /* MESH_H */
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