Merge tag 'mac80211-next-for-davem-2016-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
This time we have various things - all across the board:
 * MU-MIMO sniffer support in mac80211
 * a create_singlethread_workqueue() cleanup
 * interface dump filtering that was documented but not implemented
 * support for the new radiotap timestamp field
 * send delBA in two unexpected conditions (as required by the spec)
 * connect keys cleanups - allow only WEP with index 0-3
 * per-station aggregation limit to work around broken APs
 * debugfs improvement for the integrated codel algorithm
and various other small improvements and cleanups.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 79 insertions, 11 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index beb7610d64e9..bd26cc6e2d79 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2432,7 +2432,8 @@ struct cfg80211_qos_map {
  *	cases, the result of roaming is indicated with a call to
  *	cfg80211_roamed() or cfg80211_roamed_bss().
  *	(invoked with the wireless_dev mutex held)
- * @disconnect: Disconnect from the BSS/ESS.
+ * @disconnect: Disconnect from the BSS/ESS. Once done, call
+ *	cfg80211_disconnected().
  *	(invoked with the wireless_dev mutex held)
  *
  * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call
@@ -3955,6 +3956,34 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
 				    struct cfg80211_qos_map *qos_map);
 
 /**
+ * cfg80211_find_ie_match - match information element and byte array in data
+ *
+ * @eid: element ID
+ * @ies: data consisting of IEs
+ * @len: length of data
+ * @match: byte array to match
+ * @match_len: number of bytes in the match array
+ * @match_offset: offset in the IE where the byte array should match.
+ *	If match_len is zero, this must also be set to zero.
+ *	Otherwise this must be set to 2 or more, because the first
+ *	byte is the element id, which is already compared to eid, and
+ *	the second byte is the IE length.
+ *
+ * Return: %NULL if the element ID could not be found or if
+ * the element is invalid (claims to be longer than the given
+ * data) or if the byte array doesn't match, or a pointer to the first
+ * byte of the requested element, that is the byte containing the
+ * element ID.
+ *
+ * Note: There are no checks on the element length other than
+ * having to fit into the given data and being large enough for the
+ * byte array to match.
+ */
+const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len,
+				 const u8 *match, int match_len,
+				 int match_offset);
+
+/**
  * cfg80211_find_ie - find information element in data
  *
  * @eid: element ID
@@ -3969,7 +3998,10 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
  * Note: There are no checks on the element length other than
  * having to fit into the given data.
  */
-const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len);
+static inline const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len)
+{
+	return cfg80211_find_ie_match(eid, ies, len, NULL, 0, 0);
+}
 
 /**
  * cfg80211_find_vendor_ie - find vendor specific information element in data
diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
index b0fd9476c538..ba07b9d8ed63 100644
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -190,6 +190,10 @@ struct ieee80211_radiotap_header {
  * IEEE80211_RADIOTAP_VHT	u16, u8, u8, u8[4], u8, u8, u16
  *
  *	Contains VHT information about this frame.
+ *
+ * IEEE80211_RADIOTAP_TIMESTAMP		u64, u16, u8, u8	variable
+ *
+ *	Contains timestamp information for this frame.
  */
 enum ieee80211_radiotap_type {
 	IEEE80211_RADIOTAP_TSFT = 0,
@@ -214,6 +218,7 @@ enum ieee80211_radiotap_type {
 	IEEE80211_RADIOTAP_MCS = 19,
 	IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
 	IEEE80211_RADIOTAP_VHT = 21,
+	IEEE80211_RADIOTAP_TIMESTAMP = 22,
 
 	/* valid in every it_present bitmap, even vendor namespaces */
 	IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
@@ -321,6 +326,22 @@ enum ieee80211_radiotap_type {
 #define IEEE80211_RADIOTAP_CODING_LDPC_USER2			0x04
 #define IEEE80211_RADIOTAP_CODING_LDPC_USER3			0x08
 
+/* For IEEE80211_RADIOTAP_TIMESTAMP */
+#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK			0x000F
+#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS			0x0000
+#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US			0x0001
+#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS			0x0003
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK			0x00F0
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU		0x0000
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU		0x0010
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU		0x0020
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ		0x0030
+#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN		0x00F0
+
+#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT			0x00
+#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT			0x01
+#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY		0x02
+
 /* helpers */
 static inline int ieee80211_get_radiotap_len(unsigned char *data)
 {
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index cca510a585c3..5296100f3889 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1735,6 +1735,9 @@ struct ieee80211_sta_rates {
  * @supp_rates: Bitmap of supported rates (per band)
  * @ht_cap: HT capabilities of this STA; restricted to our own capabilities
  * @vht_cap: VHT capabilities of this STA; restricted to our own capabilities
+ * @max_rx_aggregation_subframes: maximal amount of frames in a single AMPDU
+ *	that this station is allowed to transmit to us.
+ *	Can be modified by driver.
  * @wme: indicates whether the STA supports QoS/WME (if local devices does,
  *	otherwise always false)
  * @drv_priv: data area for driver use, will always be aligned to
@@ -1775,6 +1778,7 @@ struct ieee80211_sta {
 	u16 aid;
 	struct ieee80211_sta_ht_cap ht_cap;
 	struct ieee80211_sta_vht_cap vht_cap;
+	u8 max_rx_aggregation_subframes;
 	bool wme;
 	u8 uapsd_queues;
 	u8 max_sp;
@@ -2014,6 +2018,11 @@ struct ieee80211_txq {
  * @IEEE80211_HW_TX_FRAG_LIST: Hardware (or driver) supports sending frag_list
  *	skbs, needed for zero-copy software A-MSDU.
  *
+ * @IEEE80211_HW_REPORTS_LOW_ACK: The driver (or firmware) reports low ack event
+ *	by ieee80211_report_low_ack() based on its own algorithm. For such
+ *	drivers, mac80211 packet loss mechanism will not be triggered and driver
+ *	is completely depending on firmware event for station kickout.
+ *
  * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
  */
 enum ieee80211_hw_flags {
@@ -2054,6 +2063,7 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_USES_RSS,
 	IEEE80211_HW_TX_AMSDU,
 	IEEE80211_HW_TX_FRAG_LIST,
+	IEEE80211_HW_REPORTS_LOW_ACK,
 
 	/* keep last, obviously */
 	NUM_IEEE80211_HW_FLAGS
@@ -2141,6 +2151,14 @@ enum ieee80211_hw_flags {
  *	the default is _GI | _BANDWIDTH.
  *	Use the %IEEE80211_RADIOTAP_VHT_KNOWN_* values.
  *
+ * @radiotap_timestamp: Information for the radiotap timestamp field; if the
+ *	'units_pos' member is set to a non-negative value it must be set to
+ *	a combination of a IEEE80211_RADIOTAP_TIMESTAMP_UNIT_* and a
+ *	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_* value, and then the timestamp
+ *	field will be added and populated from the &struct ieee80211_rx_status
+ *	device_timestamp. If the 'accuracy' member is non-negative, it's put
+ *	into the accuracy radiotap field and the accuracy known flag is set.
+ *
  * @netdev_features: netdev features to be set in each netdev created
  *	from this HW. Note that not all features are usable with mac80211,
  *	other features will be rejected during HW registration.
@@ -2184,6 +2202,10 @@ struct ieee80211_hw {
 	u8 offchannel_tx_hw_queue;
 	u8 radiotap_mcs_details;
 	u16 radiotap_vht_details;
+	struct {
+		int units_pos;
+		s16 accuracy;
+	} radiotap_timestamp;
 	netdev_features_t netdev_features;
 	u8 uapsd_queues;
 	u8 uapsd_max_sp_len;
@@ -3085,11 +3107,8 @@ enum ieee80211_reconfig_type {
  *
  * @sta_add_debugfs: Drivers can use this callback to add debugfs files
  *	when a station is added to mac80211's station list. This callback
- *	and @sta_remove_debugfs should be within a CONFIG_MAC80211_DEBUGFS
- *	conditional. This callback can sleep.
- *
- * @sta_remove_debugfs: Remove the debugfs files which were added using
- *	@sta_add_debugfs. This callback can sleep.
+ *	should be within a CONFIG_MAC80211_DEBUGFS conditional. This
+ *	callback can sleep.
  *
  * @sta_notify: Notifies low level driver about power state transition of an
  *	associated station, AP,  IBSS/WDS/mesh peer etc. For a VIF operating
@@ -3485,10 +3504,6 @@ struct ieee80211_ops {
 				struct ieee80211_vif *vif,
 				struct ieee80211_sta *sta,
 				struct dentry *dir);
-	void (*sta_remove_debugfs)(struct ieee80211_hw *hw,
-				   struct ieee80211_vif *vif,
-				   struct ieee80211_sta *sta,
-				   struct dentry *dir);
 #endif
 	void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			enum sta_notify_cmd, struct ieee80211_sta *sta);