Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Conflicts: drivers/net/wireless/mac80211_hwsim.c
2026-05-03 21:45:08 -04:00 · 2012-08-21 16:00:21 -04:00
parent 22c5649eef dcf33963c4
commit 01e17dacd4
84 changed files with 1241 additions and 613 deletions
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -565,6 +565,14 @@
 *	%NL80211_ATTR_IFINDEX is now on %NL80211_ATTR_WIPHY_FREQ with
 *	%NL80211_ATTR_WIPHY_CHANNEL_TYPE.
 *
+ * @NL80211_CMD_START_P2P_DEVICE: Start the given P2P Device, identified by
+ *	its %NL80211_ATTR_WDEV identifier. It must have been created with
+ *	%NL80211_CMD_NEW_INTERFACE previously. After it has been started, the
+ *	P2P Device can be used for P2P operations, e.g. remain-on-channel and
+ *	public action frame TX.
+ * @NL80211_CMD_STOP_P2P_DEVICE: Stop the given P2P Device, identified by
+ *	its %NL80211_ATTR_WDEV identifier.
+ *
 * @NL80211_CMD_MAX: highest used command number
 * @__NL80211_CMD_AFTER_LAST: internal use
 */
@@ -708,6 +716,9 @@ enum nl80211_commands {

 	NL80211_CMD_CH_SWITCH_NOTIFY,

+	NL80211_CMD_START_P2P_DEVICE,
+	NL80211_CMD_STOP_P2P_DEVICE,
+
 	/* add new commands above here */

 	/* used to define NL80211_CMD_MAX below */
@@ -1575,6 +1586,10 @@ enum nl80211_attrs {
 * @NL80211_IFTYPE_MESH_POINT: mesh point
 * @NL80211_IFTYPE_P2P_CLIENT: P2P client
 * @NL80211_IFTYPE_P2P_GO: P2P group owner
+ * @NL80211_IFTYPE_P2P_DEVICE: P2P device interface type, this is not a netdev
+ *	and therefore can't be created in the normal ways, use the
+ *	%NL80211_CMD_START_P2P_DEVICE and %NL80211_CMD_STOP_P2P_DEVICE
+ *	commands to create and destroy one
 * @NL80211_IFTYPE_MAX: highest interface type number currently defined
 * @NUM_NL80211_IFTYPES: number of defined interface types
 *
@@ -1593,6 +1608,7 @@ enum nl80211_iftype {
 	NL80211_IFTYPE_MESH_POINT,
 	NL80211_IFTYPE_P2P_CLIENT,
 	NL80211_IFTYPE_P2P_GO,
+	NL80211_IFTYPE_P2P_DEVICE,

 	/* keep last */
 	NUM_NL80211_IFTYPES,
@@ -2994,12 +3010,18 @@ enum nl80211_ap_sme_features {
 * @NL80211_FEATURE_CELL_BASE_REG_HINTS: This driver has been tested
 *	to work properly to suppport receiving regulatory hints from
 *	cellular base stations.
+ * @NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL: If this is set, an active
+ *	P2P Device (%NL80211_IFTYPE_P2P_DEVICE) requires its own channel
+ *	in the interface combinations, even when it's only used for scan
+ *	and remain-on-channel. This could be due to, for example, the
+ *	remain-on-channel implementation requiring a channel context.
 */
 enum nl80211_feature_flags {
-	NL80211_FEATURE_SK_TX_STATUS	= 1 << 0,
-	NL80211_FEATURE_HT_IBSS		= 1 << 1,
-	NL80211_FEATURE_INACTIVITY_TIMER = 1 << 2,
-	NL80211_FEATURE_CELL_BASE_REG_HINTS = 1 << 3,
+	NL80211_FEATURE_SK_TX_STATUS			= 1 << 0,
+	NL80211_FEATURE_HT_IBSS				= 1 << 1,
+	NL80211_FEATURE_INACTIVITY_TIMER		= 1 << 2,
+	NL80211_FEATURE_CELL_BASE_REG_HINTS		= 1 << 3,
+	NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL	= 1 << 4,
 };

 /**
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1437,7 +1437,8 @@ struct cfg80211_gtk_rekey_data {
 * @add_virtual_intf: create a new virtual interface with the given name,
 *	must set the struct wireless_dev's iftype. Beware: You must create
 *	the new netdev in the wiphy's network namespace! Returns the struct
- *	wireless_dev, or an ERR_PTR.
+ *	wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
+ *	also set the address member in the wdev.
 *
 * @del_virtual_intf: remove the virtual interface
 *
@@ -1616,6 +1617,9 @@ struct cfg80211_gtk_rekey_data {
 * @get_channel: Get the current operating channel for the virtual interface.
 *	For monitor interfaces, it should return %NULL unless there's a single
 *	current monitoring channel.
+ *
+ * @start_p2p_device: Start the given P2P device.
+ * @stop_p2p_device: Stop the given P2P device.
 */
 struct cfg80211_ops {
 	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -1832,6 +1836,11 @@ struct cfg80211_ops {
 		(*get_channel)(struct wiphy *wiphy,
 			       struct wireless_dev *wdev,
 			       enum nl80211_channel_type *type);
+
+	int	(*start_p2p_device)(struct wiphy *wiphy,
+				    struct wireless_dev *wdev);
+	void	(*stop_p2p_device)(struct wiphy *wiphy,
+				   struct wireless_dev *wdev);
 };

 /*
@@ -2395,6 +2404,8 @@ struct cfg80211_cached_keys;
 * @cleanup_work: work struct used for cleanup that can't be done directly
 * @beacon_interval: beacon interval used on this device for transmitting
 *	beacons, 0 when not valid
+ * @address: The address for this device, valid only if @netdev is %NULL
+ * @p2p_started: true if this is a P2P Device that has been started
 */
 struct wireless_dev {
 	struct wiphy *wiphy;
@@ -2413,7 +2424,9 @@ struct wireless_dev {

 	struct work_struct cleanup_work;

-	bool use_4addr;
+	bool use_4addr, p2p_started;
+
+	u8 address[ETH_ALEN] __aligned(sizeof(u16));

 	/* currently used for IBSS and SME - might be rearranged later */
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
@@ -2461,6 +2474,13 @@ struct wireless_dev {
 #endif
 };

+static inline u8 *wdev_address(struct wireless_dev *wdev)
+{
+	if (wdev->netdev)
+		return wdev->netdev->dev_addr;
+	return wdev->address;
+}
+
 /**
 * wdev_priv - return wiphy priv from wireless_dev
 *
@@ -3528,6 +3548,22 @@ void cfg80211_ch_switch_notify(struct net_device *dev, int freq,
 */
 u32 cfg80211_calculate_bitrate(struct rate_info *rate);

+/**
+ * cfg80211_unregister_wdev - remove the given wdev
+ * @wdev: struct wireless_dev to remove
+ *
+ * Call this function only for wdevs that have no netdev assigned,
+ * e.g. P2P Devices. It removes the device from the list so that
+ * it can no longer be used. It is necessary to call this function
+ * even when cfg80211 requests the removal of the interface by
+ * calling the del_virtual_intf() callback. The function must also
+ * be called when the driver wishes to unregister the wdev, e.g.
+ * when the device is unbound from the driver.
+ *
+ * Requires the RTNL to be held.
+ */
+void cfg80211_unregister_wdev(struct wireless_dev *wdev);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */

 /* wiphy_printk helpers, similar to dev_printk */
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -183,6 +183,9 @@ struct ieee80211_radiotap_header {
 *     Contains a bitmap of known fields/flags, the flags, and
 *     the MCS index.
 *
+ * IEEE80211_RADIOTAP_AMPDU_STATUS	u32, u16, u8, u8	unitless
+ *
+ *	Contains the AMPDU information for the subframe.
 */
 enum ieee80211_radiotap_type {
 	IEEE80211_RADIOTAP_TSFT = 0,
@@ -205,6 +208,7 @@ enum ieee80211_radiotap_type {
 	IEEE80211_RADIOTAP_DATA_RETRIES = 17,

 	IEEE80211_RADIOTAP_MCS = 19,
+	IEEE80211_RADIOTAP_AMPDU_STATUS = 20,

 	/* valid in every it_present bitmap, even vendor namespaces */
 	IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
@@ -270,6 +274,13 @@ enum ieee80211_radiotap_type {
 #define IEEE80211_RADIOTAP_MCS_FMT_GF		0x08
 #define IEEE80211_RADIOTAP_MCS_FEC_LDPC		0x10

+/* For IEEE80211_RADIOTAP_AMPDU_STATUS */
+#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN		0x0001
+#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN		0x0002
+#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN		0x0004
+#define IEEE80211_RADIOTAP_AMPDU_IS_LAST		0x0008
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR		0x0010
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN	0x0020

 /* helpers */
 static inline int ieee80211_get_radiotap_len(unsigned char *data)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -171,6 +171,7 @@ struct ieee80211_low_level_stats {
 * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface.
 * @BSS_CHANGED_SSID: SSID changed for this BSS (AP mode)
 * @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode)
+ * @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
 */
 enum ieee80211_bss_change {
 	BSS_CHANGED_ASSOC		= 1<<0,
@@ -190,6 +191,7 @@ enum ieee80211_bss_change {
 	BSS_CHANGED_IDLE		= 1<<14,
 	BSS_CHANGED_SSID		= 1<<15,
 	BSS_CHANGED_AP_PROBE_RESP	= 1<<16,
+	BSS_CHANGED_PS			= 1<<17,

 	/* when adding here, make sure to change ieee80211_reconfig */
 };
@@ -266,6 +268,8 @@ enum ieee80211_rssi_event {
 * @idle: This interface is idle. There's also a global idle flag in the
 *	hardware config which may be more appropriate depending on what
 *	your driver/device needs to do.
+ * @ps: power-save mode (STA only). This flag is NOT affected by
+ *	offchannel/dynamic_ps operations.
 * @ssid: The SSID of the current vif. Only valid in AP-mode.
 * @ssid_len: Length of SSID given in @ssid.
 * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
@@ -296,6 +300,7 @@ struct ieee80211_bss_conf {
 	bool arp_filter_enabled;
 	bool qos;
 	bool idle;
+	bool ps;
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
 	size_t ssid_len;
 	bool hidden_ssid;
@@ -522,9 +527,6 @@ struct ieee80211_tx_rate {
 *  (2) driver internal use (if applicable)
 *  (3) TX status information - driver tells mac80211 what happened
 *
- * The TX control's sta pointer is only valid during the ->tx call,
- * it may be NULL.
- *
 * @flags: transmit info flags, defined above
 * @band: the band to transmit on (use for checking for races)
 * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC
@@ -555,6 +557,7 @@ struct ieee80211_tx_info {
 					struct ieee80211_tx_rate rates[
 						IEEE80211_TX_MAX_RATES];
 					s8 rts_cts_rate_idx;
+					/* 3 bytes free */
 				};
 				/* only needed before rate control */
 				unsigned long jiffies;
@@ -562,7 +565,7 @@ struct ieee80211_tx_info {
 			/* NB: vif can be NULL for injected frames */
 			struct ieee80211_vif *vif;
 			struct ieee80211_key_conf *hw_key;
-			struct ieee80211_sta *sta;
+			/* 8 bytes free */
 		} control;
 		struct {
 			struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];
@@ -673,21 +676,41 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
 * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if
 *	the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT
 *	to hw.radiotap_mcs_details to advertise that fact
+ * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference
+ *	number (@ampdu_reference) must be populated and be a distinct number for
+ *	each A-MPDU
+ * @RX_FLAG_AMPDU_REPORT_ZEROLEN: driver reports 0-length subframes
+ * @RX_FLAG_AMPDU_IS_ZEROLEN: This is a zero-length subframe, for
+ *	monitoring purposes only
+ * @RX_FLAG_AMPDU_LAST_KNOWN: last subframe is known, should be set on all
+ *	subframes of a single A-MPDU
+ * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU
+ * @RX_FLAG_AMPDU_DELIM_CRC_ERROR: A delimiter CRC error has been detected
+ *	on this subframe
+ * @RX_FLAG_AMPDU_DELIM_CRC_KNOWN: The delimiter CRC field is known (the CRC
+ *	is stored in the @ampdu_delimiter_crc field)
 */
 enum mac80211_rx_flags {
-	RX_FLAG_MMIC_ERROR	= 1<<0,
-	RX_FLAG_DECRYPTED	= 1<<1,
-	RX_FLAG_MMIC_STRIPPED	= 1<<3,
-	RX_FLAG_IV_STRIPPED	= 1<<4,
-	RX_FLAG_FAILED_FCS_CRC	= 1<<5,
-	RX_FLAG_FAILED_PLCP_CRC = 1<<6,
-	RX_FLAG_MACTIME_MPDU	= 1<<7,
-	RX_FLAG_SHORTPRE	= 1<<8,
-	RX_FLAG_HT		= 1<<9,
-	RX_FLAG_40MHZ		= 1<<10,
-	RX_FLAG_SHORT_GI	= 1<<11,
-	RX_FLAG_NO_SIGNAL_VAL	= 1<<12,
-	RX_FLAG_HT_GF		= 1<<13,
+	RX_FLAG_MMIC_ERROR		= BIT(0),
+	RX_FLAG_DECRYPTED		= BIT(1),
+	RX_FLAG_MMIC_STRIPPED		= BIT(3),
+	RX_FLAG_IV_STRIPPED		= BIT(4),
+	RX_FLAG_FAILED_FCS_CRC		= BIT(5),
+	RX_FLAG_FAILED_PLCP_CRC 	= BIT(6),
+	RX_FLAG_MACTIME_MPDU		= BIT(7),
+	RX_FLAG_SHORTPRE		= BIT(8),
+	RX_FLAG_HT			= BIT(9),
+	RX_FLAG_40MHZ			= BIT(10),
+	RX_FLAG_SHORT_GI		= BIT(11),
+	RX_FLAG_NO_SIGNAL_VAL		= BIT(12),
+	RX_FLAG_HT_GF			= BIT(13),
+	RX_FLAG_AMPDU_DETAILS		= BIT(14),
+	RX_FLAG_AMPDU_REPORT_ZEROLEN	= BIT(15),
+	RX_FLAG_AMPDU_IS_ZEROLEN	= BIT(16),
+	RX_FLAG_AMPDU_LAST_KNOWN	= BIT(17),
+	RX_FLAG_AMPDU_IS_LAST		= BIT(18),
+	RX_FLAG_AMPDU_DELIM_CRC_ERROR	= BIT(19),
+	RX_FLAG_AMPDU_DELIM_CRC_KNOWN	= BIT(20),
 };

 /**
@@ -711,17 +734,22 @@ enum mac80211_rx_flags {
 *	HT rates are use (RX_FLAG_HT)
 * @flag: %RX_FLAG_*
 * @rx_flags: internal RX flags for mac80211
+ * @ampdu_reference: A-MPDU reference number, must be a different value for
+ *	each A-MPDU but the same for each subframe within one A-MPDU
+ * @ampdu_delimiter_crc: A-MPDU delimiter CRC
 */
 struct ieee80211_rx_status {
 	u64 mactime;
 	u32 device_timestamp;
-	u16 flag;
+	u32 ampdu_reference;
+	u32 flag;
 	u16 freq;
 	u8 rate_idx;
 	u8 rx_flags;
 	u8 band;
 	u8 antenna;
 	s8 signal;
+	u8 ampdu_delimiter_crc;
 };

 /**
@@ -1073,6 +1101,16 @@ enum sta_notify_cmd {
 	STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE,
 };

+/**
+ * struct ieee80211_tx_control - TX control data
+ *
+ * @sta: station table entry, this sta pointer may be NULL and
+ * 	it is not allowed to copy the pointer, due to RCU.
+ */
+struct ieee80211_tx_control {
+	struct ieee80211_sta *sta;
+};
+
 /**
 * enum ieee80211_hw_flags - hardware flags
 *
@@ -1203,6 +1241,10 @@ enum sta_notify_cmd {
 *	queue mapping in order to use different queues (not just one per AC)
 *	for different virtual interfaces. See the doc section on HW queue
 *	control for more details.
+ *
+ * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any
+ *	P2P Interface. This will be honoured even if more than one interface
+ *	is supported.
 */
 enum ieee80211_hw_flags {
 	IEEE80211_HW_HAS_RATE_CONTROL			= 1<<0,
@@ -1230,6 +1272,7 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_AP_LINK_PS				= 1<<22,
 	IEEE80211_HW_TX_AMPDU_SETUP_IN_HW		= 1<<23,
 	IEEE80211_HW_SCAN_WHILE_IDLE			= 1<<24,
+	IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF		= 1<<25,
 };

 /**
@@ -1884,10 +1927,14 @@ enum ieee80211_frame_release_type {
 * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit
 *	to this station changed.
 * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed.
+ * @IEEE80211_RC_SUPP_RATES_CHANGED: The supported rate set of this peer
+ *	changed (in IBSS mode) due to discovering more information about
+ *	the peer.
 */
 enum ieee80211_rate_control_changed {
 	IEEE80211_RC_BW_CHANGED		= BIT(0),
 	IEEE80211_RC_SMPS_CHANGED	= BIT(1),
+	IEEE80211_RC_SUPP_RATES_CHANGED	= BIT(2),
 };

 /**
@@ -2264,7 +2311,9 @@ enum ieee80211_rate_control_changed {
 *	The callback is optional and can (should!) sleep.
 */
 struct ieee80211_ops {
-	void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
+	void (*tx)(struct ieee80211_hw *hw,
+		   struct ieee80211_tx_control *control,
+		   struct sk_buff *skb);
 	int (*start)(struct ieee80211_hw *hw);
 	void (*stop)(struct ieee80211_hw *hw);
 #ifdef CONFIG_PM