예제 #1
0
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			  struct net_device *dev,
			  struct ieee80211_channel *chan,
			  const u8 *bssid,
			  const u8 *ssid, int ssid_len,
			  struct cfg80211_assoc_request *req)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;
	bool was_connected = false;

	ASSERT_WDEV_LOCK(wdev);

	if (wdev->current_bss && req->prev_bssid &&
	    ether_addr_equal(wdev->current_bss->pub.bssid, req->prev_bssid)) {
		/*
		 * Trying to reassociate: Allow this to proceed and let the old
		 * association to be dropped when the new one is completed.
		 */
		if (wdev->sme_state == CFG80211_SME_CONNECTED) {
			was_connected = true;
			wdev->sme_state = CFG80211_SME_CONNECTING;
		}
	} else if (wdev->current_bss)
		return -EALREADY;

	cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
				  rdev->wiphy.ht_capa_mod_mask);
	cfg80211_oper_and_vht_capa(&req->vht_capa_mask,
				   rdev->wiphy.vht_capa_mod_mask);

	req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
				    WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	if (!req->bss) {
		if (was_connected)
			wdev->sme_state = CFG80211_SME_CONNECTED;
		return -ENOENT;
	}

	err = cfg80211_can_use_chan(rdev, wdev, chan, CHAN_MODE_SHARED);
	if (err)
		goto out;

	err = rdev_assoc(rdev, dev, req);

out:
	if (err) {
		if (was_connected)
			wdev->sme_state = CFG80211_SME_CONNECTED;
		cfg80211_put_bss(&rdev->wiphy, req->bss);
	}

	return err;
}
예제 #2
0
/* some MLME handling for userspace SME */
int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct ieee80211_channel *chan,
			 enum nl80211_auth_type auth_type,
			 const u8 *bssid,
			 const u8 *ssid, int ssid_len,
			 const u8 *ie, int ie_len,
			 const u8 *key, int key_len, int key_idx,
			 const u8 *sae_data, int sae_data_len)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_auth_request req;
	int err;

	ASSERT_WDEV_LOCK(wdev);

	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
		if (!key || !key_len || key_idx < 0 || key_idx > 4)
			return -EINVAL;

	if (wdev->current_bss &&
	    ether_addr_equal(bssid, wdev->current_bss->pub.bssid))
		return -EALREADY;

	memset(&req, 0, sizeof(req));

	req.ie = ie;
	req.ie_len = ie_len;
	req.sae_data = sae_data;
	req.sae_data_len = sae_data_len;
	req.auth_type = auth_type;
	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	req.key = key;
	req.key_len = key_len;
	req.key_idx = key_idx;
	if (!req.bss)
		return -ENOENT;

	err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
				    CHAN_MODE_SHARED);
	if (err)
		goto out;

	err = rdev_auth(rdev, dev, &req);

out:
	cfg80211_put_bss(&rdev->wiphy, req.bss);
	return err;
}
예제 #3
0
int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev,
			      struct cfg80211_chan_def *chandef)
{
	int err;

	/*
	 * Workaround for libertas (only!), it puts the interface
	 * into mesh mode but doesn't implement join_mesh. Instead,
	 * it is configured via sysfs and then joins the mesh when
	 * you set the channel. Note that the libertas mesh isn't
	 * compatible with 802.11 mesh.
	 */
	if (rdev->ops->libertas_set_mesh_channel) {
		if (chandef->width != NL80211_CHAN_WIDTH_20_NOHT)
			return -EINVAL;

		if (!netif_running(wdev->netdev))
			return -ENETDOWN;

		err = cfg80211_can_use_chan(rdev, wdev, chandef->chan,
					    CHAN_MODE_SHARED);
		if (err)
			return err;

		err = rdev_libertas_set_mesh_channel(rdev, wdev->netdev,
						     chandef->chan);
		if (!err)
			wdev->channel = chandef->chan;

		return err;
	}

	if (wdev->mesh_id_len)
		return -EBUSY;

	wdev->preset_chandef = *chandef;
	return 0;
}
예제 #4
0
int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
                         struct net_device *dev,
                         struct cfg80211_ibss_params *params,
                         struct cfg80211_cached_keys *connkeys)
{
    struct wireless_dev *wdev = dev->ieee80211_ptr;
    int err;

    ASSERT_WDEV_LOCK(wdev);

    if (wdev->ssid_len)
        return -EALREADY;

    if (!params->basic_rates) {
        /*
        * If no rates were explicitly configured,
        * use the mandatory rate set for 11b or
        * 11a for maximum compatibility.
        */
        struct ieee80211_supported_band *sband =
                rdev->wiphy.bands[params->chandef.chan->band];
        int j;
        u32 flag = params->chandef.chan->band == IEEE80211_BAND_5GHZ ?
                   IEEE80211_RATE_MANDATORY_A :
                   IEEE80211_RATE_MANDATORY_B;

        for (j = 0; j < sband->n_bitrates; j++) {
            if (sband->bitrates[j].flags & flag)
                params->basic_rates |= BIT(j);
        }
    }

    if (WARN_ON(wdev->connect_keys))
        kfree(wdev->connect_keys);
    wdev->connect_keys = connkeys;

    wdev->ibss_fixed = params->channel_fixed;
#ifdef CONFIG_CFG80211_WEXT
    wdev->wext.ibss.chandef = params->chandef;
#endif
    wdev->sme_state = CFG80211_SME_CONNECTING;

    err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan,
                                params->channel_fixed
                                ? CHAN_MODE_SHARED
                                : CHAN_MODE_EXCLUSIVE);
    if (err) {
        wdev->connect_keys = NULL;
        return err;
    }

    err = rdev_join_ibss(rdev, dev, params);
    if (err) {
        wdev->connect_keys = NULL;
        wdev->sme_state = CFG80211_SME_IDLE;
        return err;
    }

    memcpy(wdev->ssid, params->ssid, params->ssid_len);
    wdev->ssid_len = params->ssid_len;

    return 0;
}
예제 #5
0
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct mesh_setup *setup,
			 const struct mesh_config *conf)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	int err;

	BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != IEEE80211_MAX_MESH_ID_LEN);

	ASSERT_WDEV_LOCK(wdev);

	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
		return -EOPNOTSUPP;

	if (!(rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
	      setup->is_secure)
		return -EOPNOTSUPP;

	if (wdev->mesh_id_len)
		return -EALREADY;

	if (!setup->mesh_id_len)
		return -EINVAL;

	if (!rdev->ops->join_mesh)
		return -EOPNOTSUPP;

	if (!setup->chandef.chan) {
		/* if no channel explicitly given, use preset channel */
		setup->chandef = wdev->preset_chandef;
	}

	if (!setup->chandef.chan) {
		/* if we don't have that either, use the first usable channel */
		enum ieee80211_band band;

		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
			struct ieee80211_supported_band *sband;
			struct ieee80211_channel *chan;
			int i;

			sband = rdev->wiphy.bands[band];
			if (!sband)
				continue;

			for (i = 0; i < sband->n_channels; i++) {
				chan = &sband->channels[i];
				if (chan->flags & (IEEE80211_CHAN_NO_IBSS |
						   IEEE80211_CHAN_PASSIVE_SCAN |
						   IEEE80211_CHAN_DISABLED |
						   IEEE80211_CHAN_RADAR))
					continue;
				setup->chandef.chan = chan;
				break;
			}

			if (setup->chandef.chan)
				break;
		}

		/* no usable channel ... */
		if (!setup->chandef.chan)
			return -EINVAL;

		setup->chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
		setup->chandef.center_freq1 = setup->chandef.chan->center_freq;
	}

	if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef))
		return -EINVAL;

	err = cfg80211_can_use_chan(rdev, wdev, setup->chandef.chan,
				    CHAN_MODE_SHARED);
	if (err)
		return err;

	err = rdev_join_mesh(rdev, dev, conf, setup);
	if (!err) {
		memcpy(wdev->ssid, setup->mesh_id, setup->mesh_id_len);
		wdev->mesh_id_len = setup->mesh_id_len;
		wdev->channel = setup->chandef.chan;
	}

	return err;
}
예제 #6
0
파일: mlme.c 프로젝트: AllenDou/linux
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			  struct net_device *dev,
			  struct ieee80211_channel *chan,
			  const u8 *bssid, const u8 *prev_bssid,
			  const u8 *ssid, int ssid_len,
			  const u8 *ie, int ie_len, bool use_mfp,
			  struct cfg80211_crypto_settings *crypt,
			  u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
			  struct ieee80211_ht_cap *ht_capa_mask)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_assoc_request req;
	int err;
	bool was_connected = false;

	ASSERT_WDEV_LOCK(wdev);

	memset(&req, 0, sizeof(req));

	if (wdev->current_bss && prev_bssid &&
	    ether_addr_equal(wdev->current_bss->pub.bssid, prev_bssid)) {
		/*
		 * Trying to reassociate: Allow this to proceed and let the old
		 * association to be dropped when the new one is completed.
		 */
		if (wdev->sme_state == CFG80211_SME_CONNECTED) {
			was_connected = true;
			wdev->sme_state = CFG80211_SME_CONNECTING;
		}
	} else if (wdev->current_bss)
		return -EALREADY;

	req.ie = ie;
	req.ie_len = ie_len;
	memcpy(&req.crypto, crypt, sizeof(req.crypto));
	req.use_mfp = use_mfp;
	req.prev_bssid = prev_bssid;
	req.flags = assoc_flags;
	if (ht_capa)
		memcpy(&req.ht_capa, ht_capa, sizeof(req.ht_capa));
	if (ht_capa_mask)
		memcpy(&req.ht_capa_mask, ht_capa_mask,
		       sizeof(req.ht_capa_mask));
	cfg80211_oper_and_ht_capa(&req.ht_capa_mask,
				  rdev->wiphy.ht_capa_mod_mask);

	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
				   WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	if (!req.bss) {
		if (was_connected)
			wdev->sme_state = CFG80211_SME_CONNECTED;
		return -ENOENT;
	}

	err = cfg80211_can_use_chan(rdev, wdev, req.bss->channel,
				    CHAN_MODE_SHARED);
	if (err)
		goto out;

	err = rdev->ops->assoc(&rdev->wiphy, dev, &req);

out:
	if (err) {
		if (was_connected)
			wdev->sme_state = CFG80211_SME_CONNECTED;
		cfg80211_put_bss(req.bss);
	}

	return err;
}