Example #1
0
void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss,
			    const u8 *buf, size_t len)
{
	u16 status_code;
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	u8 *ie = mgmt->u.assoc_resp.variable;
	int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);

	trace_cfg80211_send_rx_assoc(dev, bss);
	wdev_lock(wdev);

	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);

	/*
	 * This is a bit of a hack, we don't notify userspace of
	 * a (re-)association reply if we tried to send a reassoc
	 * and got a reject -- we only try again with an assoc
	 * frame instead of reassoc.
	 */
	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
	    cfg80211_sme_failed_reassoc(wdev)) {
		cfg80211_put_bss(wiphy, bss);
		goto out;
	}

	nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);

	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) {
		cfg80211_sme_failed_assoc(wdev);
		/*
		 * do not call connect_result() now because the
		 * sme will schedule work that does it later.
		 */
		cfg80211_put_bss(wiphy, bss);
		goto out;
	}

	if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
		/*
		 * This is for the userspace SME, the CONNECTING
		 * state will be changed to CONNECTED by
		 * __cfg80211_connect_result() below.
		 */
		wdev->sme_state = CFG80211_SME_CONNECTING;
	}

	/* this consumes the bss reference */
	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
				  status_code,
				  status_code == WLAN_STATUS_SUCCESS, bss);
 out:
	wdev_unlock(wdev);
}
Example #2
0
void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
{
	u16 status_code;
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct wiphy *wiphy = wdev->wiphy;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
	u8 *ie = mgmt->u.assoc_resp.variable;
	int i, ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
	struct cfg80211_internal_bss *bss = NULL;

	wdev_lock(wdev);

	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);

	/*
	 * This is a bit of a hack, we don't notify userspace of
	 * a (re-)association reply if we tried to send a reassoc
	 * and got a reject -- we only try again with an assoc
	 * frame instead of reassoc.
	 */
	if (status_code != WLAN_STATUS_SUCCESS && wdev->conn &&
	    cfg80211_sme_failed_reassoc(wdev))
		goto out;

	nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL);

	if (status_code == WLAN_STATUS_SUCCESS) {
		for (i = 0; i < MAX_AUTH_BSSES; i++) {
			if (!wdev->auth_bsses[i])
				continue;
			if (memcmp(wdev->auth_bsses[i]->pub.bssid, mgmt->bssid,
				   ETH_ALEN) == 0) {
				bss = wdev->auth_bsses[i];
				wdev->auth_bsses[i] = NULL;
				/* additional reference to drop hold */
				cfg80211_ref_bss(bss);
				break;
			}
		}

		/*
		 * We might be coming here because the driver reported
		 * a successful association at the same time as the
		 * user requested a deauth. In that case, we will have
		 * removed the BSS from the auth_bsses list due to the
		 * deauth request when the assoc response makes it. If
		 * the two code paths acquire the lock the other way
		 * around, that's just the standard situation of a
		 * deauth being requested while connected.
		 */
		if (!bss)
			goto out;
	} else if (wdev->conn) {
		cfg80211_sme_failed_assoc(wdev);
		/*
		 * do not call connect_result() now because the
		 * sme will schedule work that does it later.
		 */
		goto out;
	}

	if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) {
		/*
		 * This is for the userspace SME, the CONNECTING
		 * state will be changed to CONNECTED by
		 * __cfg80211_connect_result() below.
		 */
		wdev->sme_state = CFG80211_SME_CONNECTING;
	}

	/* this consumes one bss reference (unless bss is NULL) */
	__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs,
				  status_code,
				  status_code == WLAN_STATUS_SUCCESS,
				  bss ? &bss->pub : NULL);
	/* drop hold now, and also reference acquired above */
	if (bss) {
		cfg80211_unhold_bss(bss);
		cfg80211_put_bss(&bss->pub);
	}

 out:
	wdev_unlock(wdev);
}