get rid of AP mode monitor interfaces

@@ -1304,6 +1304,16 @@ ieee80211_get_alt_retry_rate(const struc
 }
 
 /**
+ * ieee80211_free_txskb - free TX skb
+ * @hw: the hardware
+ * @skb: the skb
+ *
+ * Free a transmit skb. Use this funtion when some failure
+ * to transmit happened and thus status cannot be reported.
+ */
+void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
+
+/**
  * DOC: Hardware crypto acceleration
  *
  * mac80211 is capable of taking advantage of many hardware

@@ -609,3 +609,9 @@ void ieee80211_report_low_ack(struct iee
 				    num_packets, GFP_ATOMIC);
 }
 EXPORT_SYMBOL(ieee80211_report_low_ack);
+
+void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	dev_kfree_skb_any(skb);
+}
+EXPORT_SYMBOL(ieee80211_free_txskb);

@@ -594,6 +594,8 @@ static int ieee80211_add_beacon(struct w
 {
 	struct ieee80211_sub_if_data *sdata;
 	struct beacon_data *old;
+	struct ieee80211_sub_if_data *vlan;
+	int ret;
 
 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 

@@ -601,7 +603,24 @@ static int ieee80211_add_beacon(struct w
 	if (old)
 		return -EALREADY;
 
-	return ieee80211_config_beacon(sdata, params);
+	ret = ieee80211_config_beacon(sdata, params);
+	if (ret)
+		return ret;
+
+	/*
+	 * Apply control port protocol, this allows us to
+	 * not encrypt dynamic WEP control frames.
+	 */
+	sdata->control_port_protocol = params->crypto.control_port_ethertype;
+	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
+	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
+		vlan->control_port_protocol =
+			params->crypto.control_port_ethertype;
+		vlan->control_port_no_encrypt =
+			params->crypto.control_port_no_encrypt;
+	}
+
+	return 0;
 }
 
 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,

@@ -188,11 +188,22 @@ static int ieee80211_do_open(struct net_
 		if (!is_valid_ether_addr(sdata->u.wds.remote_addr))
 			return -ENOLINK;
 		break;
-	case NL80211_IFTYPE_AP_VLAN:
+	case NL80211_IFTYPE_AP_VLAN: {
+		struct ieee80211_sub_if_data *master;
+
 		if (!sdata->bss)
 			return -ENOLINK;
+
 		list_add(&sdata->u.vlan.list, &sdata->bss->vlans);
+
+		master = container_of(sdata->bss,
+				      struct ieee80211_sub_if_data, u.ap);
+		sdata->control_port_protocol =
+			master->control_port_protocol;
+		sdata->control_port_no_encrypt =
+			master->control_port_no_encrypt;
 		break;
+		}
 	case NL80211_IFTYPE_AP:
 		sdata->bss = &sdata->u.ap;
 		break;

@@ -509,6 +509,17 @@
  * @NL80211_CMD_TDLS_OPER: Perform a high-level TDLS command (e.g. link setup).
  * @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame.
  *
+ * @NL80211_CMD_UNEXPECTED_FRAME: Used by an application controlling an AP
+ *	(or GO) interface (i.e. hostapd) to ask for unexpected frames to
+ *	implement sending deauth to stations that send unexpected class 3
+ *	frames. Also used as the event sent by the kernel when such a frame
+ *	is received. When 4 address mode is supported, it may also be used
+ *	to notify the AP controller about those frames.
+ *	For the event, the %NL80211_ATTR_MAC attribute carries TA along
+ *	with more information like the interface index.
+ *	If used as the command, must have an interface index, and you can
+ *	only unsubscribe from the event by closing the socket.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */

@@ -638,6 +649,8 @@ enum nl80211_commands {
 	NL80211_CMD_TDLS_OPER,
 	NL80211_CMD_TDLS_MGMT,
 
+	NL80211_CMD_UNEXPECTED_FRAME,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */

@@ -2179,6 +2179,8 @@ struct wireless_dev {
 
 	int beacon_interval;
 
+	u32 ap_unexpected_nlpid;
+
 #ifdef CONFIG_CFG80211_WEXT
 	/* wext data */
 	struct {

@@ -3185,6 +3187,23 @@ void cfg80211_gtk_rekey_notify(struct ne
 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
 				     const u8 *bssid, bool preauth, gfp_t gfp);
 
+/**
+ * cfg80211_rx_spurious_frame - inform userspace about a spurious frame
+ * @dev: The device the frame matched to
+ * @addr: the transmitter address
+ * @gfp: context flags
+ *
+ * This function is used in AP mode (only!) to inform userspace that
+ * a spurious class 3 frame was received, to be able to deauth the
+ * sender. If 4addr frames are supported in AP mode, these may also
+ * be passed here if they aren't yet allowed for the sender so that
+ * the userspace application can set up things properly.
+ * Returns %true if the frame was passed to userspace (or this failed
+ * for a reason other than not having a subscription.)
+ */
+bool cfg80211_rx_spurious_frame(struct net_device *dev,
+				const u8 *addr, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */

@@ -879,6 +879,9 @@ void cfg80211_mlme_unregister_socket(str
 	}
 
 	spin_unlock_bh(&wdev->mgmt_registrations_lock);
+
+	if (nlpid == wdev->ap_unexpected_nlpid)
+		wdev->ap_unexpected_nlpid = 0;
 }
 
 void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)

@@ -1107,3 +1110,16 @@ void cfg80211_pmksa_candidate_notify(str
 	nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
 }
 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
+
+bool cfg80211_rx_spurious_frame(struct net_device *dev,
+				const u8 *addr, gfp_t gfp)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
+		    wdev->iftype != NL80211_IFTYPE_P2P_GO))
+		return false;
+
+	return nl80211_unexpected_frame(dev, addr, gfp);
+}
+EXPORT_SYMBOL(cfg80211_rx_spurious_frame);

84 lines not on this page · raw message

@@ -117,4 +117,7 @@ void nl80211_pmksa_candidate_notify(stru
 				    struct net_device *netdev, int index,
 				    const u8 *bssid, bool preauth, gfp_t gfp);
 
+bool nl80211_unexpected_frame(struct net_device *dev,
+			      const u8 *addr, gfp_t gfp);
+
 #endif /* __NET_WIRELESS_NL80211_H */

@@ -854,6 +854,13 @@ ieee80211_rx_h_check(struct ieee80211_rx
 			    rx->sdata->control_port_protocol)
 				return RX_CONTINUE;
 		}
+
+		if (rx->sdata->vif.type == NL80211_IFTYPE_AP &&
+		    cfg80211_rx_spurious_frame(rx->sdata->dev,
+		    			       hdr->addr2,
+		    			       GFP_ATOMIC))
+			return RX_DROP_UNUSABLE;
+
 		return RX_DROP_MONITOR;
 	}
 

@@ -1122,6 +1122,11 @@ enum nl80211_commands {
  *	%NL80211_CMD_TDLS_MGMT. Otherwise %NL80211_CMD_TDLS_OPER should be
  *	used for asking the driver to perform a TDLS operation.
  *
+ * @NL80211_ATTR_DEVICE_AP_SME: This u32 attribute may be listed for devices
+ *	that have AP support to indicate that the have the AP SME integrated
+ *	with support for the features listed in this attribute, see
+ *	&enum nl80211_ap_sme_features.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */

@@ -1350,6 +1355,8 @@ enum nl80211_attrs {
 	NL80211_ATTR_TDLS_SUPPORT,
 	NL80211_ATTR_TDLS_EXTERNAL_SETUP,
 
+	NL80211_ATTR_DEVICE_AP_MLME,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

@@ -2663,4 +2670,17 @@ enum nl80211_tdls_operation {
 	NL80211_TDLS_DISABLE_LINK,
 };
 
+/**
+ * enum nl80211_ap_sme_features - device-integrated AP features
+ * @NL80211_AP_SME_WSC: The driver is capable of indicating received probe
+ *	request frames to userspace via management frame subscription events
+ *	if the payload includes the WSC IE. The driver is capable of adding
+ *	the WSC IE as configured from userspace into beacons, probe responses
+ *	and (re)association reponse frame and allows userspace to update them
+ *	during the lifetime of the BSS.
+ */
+enum nl80211_ap_sme_features {
+	NL80211_AP_SME_WSC	= 1 << 0,
+};
+
 #endif /* __LINUX_NL80211_H */

@@ -1675,6 +1675,7 @@ struct cfg80211_ops {
  *	teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT
  *	command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
  *	used for asking the driver/firmware to perform a TDLS operation.
+ * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
  */
 enum wiphy_flags {
 	WIPHY_FLAG_CUSTOM_REGULATORY		= BIT(0),

@@ -1693,6 +1694,7 @@ enum wiphy_flags {
 	WIPHY_FLAG_AP_UAPSD			= BIT(14),
 	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
 	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
+	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
 };
 
 /**

@@ -1903,6 +1905,8 @@ struct wiphy_wowlan_support {
  *	may request, if implemented.
  *
  * @wowlan: WoWLAN support information
+ *
+ * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
  */
 struct wiphy {
 	/* assign these fields before you register the wiphy */

@@ -1926,6 +1930,8 @@ struct wiphy {
 
 	u32 flags;
 
+	u32 ap_sme_capa;
+
 	enum cfg80211_signal_type signal_type;
 
 	int bss_priv_size;

@@ -492,6 +492,10 @@ int wiphy_register(struct wiphy *wiphy)
 		    !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
 		return -EINVAL;
 
+	if (WARN_ON(wiphy->ap_sme_capa &&
+		    !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME)))
+		return -EINVAL;
+
 	if (WARN_ON(wiphy->addresses && !wiphy->n_addresses))
 		return -EINVAL;
 

@@ -1008,6 +1008,10 @@ static int nl80211_send_wiphy(struct sk_
 	if (nl80211_put_iface_combinations(&dev->wiphy, msg))
 		goto nla_put_failure;
 
+	if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME)
+		NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_MLME,
+			    dev->wiphy.ap_sme_capa);
+
 	return genlmsg_end(msg, hdr);
 
  nla_put_failure:

@@ -1548,7 +1548,9 @@ static int ath6kl_init(struct net_device
 	ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER |
 			 ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST;
 
-	ar->wdev->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM;
+	ar->wdev->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
+				  WIPHY_FLAG_HAVE_AP_SME;
+	ar->wdev->wiphy->ap_sme_capa = NL80211_AP_SME_WSC;
 
 	status = ath6kl_target_config_wlan_params(ar);
 	if (!status)

@@ -520,6 +520,14 @@
  *	If used as the command, must have an interface index, and you can
  *	only unsubscribe from the event by closing the socket.
  *
+ * @NL80211_CMD_PROBE_CLIENT: Probe an associated station on an AP interface
+ *	by sending a null data frame to it and reporting when the frame is
+ *	acknowleged. This is used to allow timing out inactive clients. Uses
+ *	%NL80211_ATTR_IFINDEX and %NL80211_ATTR_MAC. The command returns a
+ *	direct reply with an %NL80211_ATTR_COOKIE that is later used to match
+ *	up the event with the request. The event includes the same data and
+ *	has %NL80211_ATTR_ACK set if the frame was ACKed.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */

@@ -651,6 +659,8 @@ enum nl80211_commands {
 
 	NL80211_CMD_UNEXPECTED_FRAME,
 
+	NL80211_CMD_PROBE_CLIENT,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */

@@ -1428,6 +1428,9 @@ struct cfg80211_gtk_rekey_data {
  *
  * @tdls_mgmt: Transmit a TDLS management frame.
  * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
+ *
+ * @probe_client: probe an associated client, must return a cookie that it
+ *	later passes to cfg80211_probe_status().
  */
 struct cfg80211_ops {
 	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);

@@ -1617,6 +1620,9 @@ struct cfg80211_ops {
 			     u16 status_code, const u8 *buf, size_t len);
 	int	(*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
 			     u8 *peer, enum nl80211_tdls_operation oper);
+
+	int	(*probe_client)(struct wiphy *wiphy, struct net_device *dev,
+				const u8 *peer, u64 *cookie);
 };
 
 /*

@@ -3210,6 +3216,17 @@ void cfg80211_pmksa_candidate_notify(str
 bool cfg80211_rx_spurious_frame(struct net_device *dev,
 				const u8 *addr, gfp_t gfp);
 
+/**
+ * cfg80211_probe_status - notify userspace about probe status
+ * @dev: the device the probe was sent on
+ * @addr: the address of the peer
+ * @cookie: the cookie filled in @probe_client previously
+ * @acked: indicates whether probe was acked or not
+ * @gfp: allocation flags
+ */
+void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
+			   u64 cookie, bool acked, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */

128 lines not on this page · raw message

@@ -2507,6 +2507,73 @@ static int ieee80211_tdls_oper(struct wi
 	return 0;
 }
 
+static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
+				  const u8 *peer, u64 *cookie)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_qos_hdr *nullfunc;
+	struct sk_buff *skb;
+	int size = sizeof(*nullfunc);
+	__le16 fc;
+	bool qos;
+	struct ieee80211_tx_info *info;
+	struct sta_info *sta;
+
+	rcu_read_lock();
+	sta = sta_info_get(sdata, peer);
+	if (sta)
+		qos = test_sta_flag(sta, WLAN_STA_WME);
+	rcu_read_unlock();
+
+	if (!sta)
+		return -ENOLINK;
+
+	if (qos) {
+		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
+				 IEEE80211_STYPE_QOS_NULLFUNC |
+				 IEEE80211_FCTL_FROMDS);
+	} else {
+		size -= 2;
+		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
+				 IEEE80211_STYPE_NULLFUNC |
+				 IEEE80211_FCTL_FROMDS);
+	}
+
+	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
+	if (!skb)
+		return -ENOMEM;
+
+	skb->dev = dev;
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+
+	nullfunc = (void *) skb_put(skb, size);
+	nullfunc->frame_control = fc;
+	nullfunc->duration_id = 0;
+	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
+	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
+	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
+	nullfunc->seq_ctrl = 0;
+
+	info = IEEE80211_SKB_CB(skb);
+
+	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
+		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
+
+	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
+	skb->priority = 7;
+	if (qos)
+		nullfunc->qos_ctrl = cpu_to_le16(7);
+
+	local_bh_disable();
+	ieee80211_xmit(sdata, skb);
+	local_bh_enable();
+
+	*cookie = (unsigned long) skb;
+	return 0;
+}
+
 struct cfg80211_ops mac80211_config_ops = {
 	.add_virtual_intf = ieee80211_add_iface,
 	.del_virtual_intf = ieee80211_del_iface,

@@ -2572,4 +2639,5 @@ struct cfg80211_ops mac80211_config_ops
 	.set_rekey_data = ieee80211_set_rekey_data,
 	.tdls_oper = ieee80211_tdls_oper,
 	.tdls_mgmt = ieee80211_tdls_mgmt,
+	.probe_client = ieee80211_probe_client,
 };

54 lines not on this page · raw message

@@ -64,4 +64,7 @@
 #define SO_DOMAIN		39
 
 #define SO_RXQ_OVFL             40
+
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS	SO_WIFI_STATUS
 #endif /* __ASM_GENERIC_SOCKET_H */

@@ -743,6 +743,11 @@ set_rcvbuf:
 		else
 			sock_reset_flag(sk, SOCK_RXQ_OVFL);
 		break;
+
+	case SO_WIFI_STATUS:
+		sock_valbool_flag(sk, SOCK_WIFI_STATUS, valbool);
+		break;
+
 	default:
 		ret = -ENOPROTOOPT;
 		break;

@@ -964,6 +969,10 @@ int sock_getsockopt(struct socket *sock,
 		v.val = !!sock_flag(sk, SOCK_RXQ_OVFL);
 		break;
 
+	case SO_WIFI_STATUS:
+		v.val = !!sock_flag(sk, SOCK_WIFI_STATUS);
+		break;
+
 	default:
 		return -ENOPROTOOPT;
 	}

@@ -564,6 +564,7 @@ enum sock_flags {
 	SOCK_FASYNC, /* fasync() active */
 	SOCK_RXQ_OVFL,
 	SOCK_ZEROCOPY, /* buffers from userspace */
+	SOCK_WIFI_STATUS, /* push wifi status to userspace */
 };
 
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)

@@ -1705,7 +1706,10 @@ static inline int sock_intr_errno(long t
 
 extern void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
 	struct sk_buff *skb);
+extern void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk,
+	struct sk_buff *skb);
 
+/* XXX: rename this function now? */
 static __inline__ void
 sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
 {

@@ -1732,6 +1736,9 @@ sock_recv_timestamp(struct msghdr *msg,
 		__sock_recv_timestamp(msg, sk, skb);
 	else
 		sk->sk_stamp = kt;
+
+	if (sock_flag(sk, SOCK_WIFI_STATUS) && skb->wifi_acked_valid)
+		__sock_recv_wifi_status(msg, sk, skb);
 }
 
 extern void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,

@@ -69,6 +69,9 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 /* O_NONBLOCK clashes with the bits used for socket types.  Therefore we
  * have to define SOCK_NONBLOCK to a different value here.
  */

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* __ASM_AVR32_SOCKET_H */

@@ -64,6 +64,9 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */
 
 

@@ -62,5 +62,8 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */
 

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */

@@ -71,4 +71,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_IA64_SOCKET_H */

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_M32R_SOCKET_H */

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */

@@ -82,6 +82,9 @@ To add: #define SO_REUSEPORT 0x0200	/* A
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #ifdef __KERNEL__
 
 /** sock_type - Socket types

@@ -62,4 +62,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */

@@ -61,6 +61,9 @@
 
 #define SO_RXQ_OVFL             0x4021
 
+#define SO_WIFI_STATUS		0x4022
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 /* O_NONBLOCK clashes with the bits used for socket types.  Therefore we
  * have to define SOCK_NONBLOCK to a different value here.
  */

@@ -69,4 +69,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif	/* _ASM_POWERPC_SOCKET_H */

@@ -70,4 +70,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif /* _ASM_SOCKET_H */

@@ -58,6 +58,9 @@
 
 #define SO_RXQ_OVFL             0x0024
 
+#define SO_WIFI_STATUS		0x0025
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 /* Security levels - as per NRL IPv6 - don't actually do anything */
 #define SO_SECURITY_AUTHENTICATION		0x5001
 #define SO_SECURITY_ENCRYPTION_TRANSPORT	0x5002

@@ -73,4 +73,7 @@
 
 #define SO_RXQ_OVFL             40
 
+#define SO_WIFI_STATUS		41
+#define SCM_WIFI_STATUS		SO_WIFI_STATUS
+
 #endif	/* _XTENSA_SOCKET_H */

@@ -17,7 +17,8 @@ struct sock_extended_err {
 #define SO_EE_ORIGIN_LOCAL	1
 #define SO_EE_ORIGIN_ICMP	2
 #define SO_EE_ORIGIN_ICMP6	3
-#define SO_EE_ORIGIN_TIMESTAMPING 4
+#define SO_EE_ORIGIN_TXSTATUS	4
+#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
 
 #define SO_EE_OFFENDER(ee)	((struct sockaddr*)((ee)+1))
 

@@ -190,6 +190,9 @@ enum {
 
 	/* device driver supports TX zero-copy buffers */
 	SKBTX_DEV_ZEROCOPY = 1 << 4,
+
+	/* generate wifi status information (where possible) */
+	SKBTX_WIFI_STATUS = 1 << 5,
 };
 
 /*

@@ -322,6 +325,8 @@ typedef unsigned char *sk_buff_data_t;
  *	@queue_mapping: Queue mapping for multiqueue devices
  *	@ndisc_nodetype: router type (from link layer)
  *	@ooo_okay: allow the mapping of a socket to a queue to be changed
+ *	@wifi_acked_valid: wifi_acked was set
+ *	@wifi_acked: whether frame was acked on wifi or not
  *	@dma_cookie: a cookie to one of several possible DMA operations
  *		done by skb DMA functions
  *	@secmark: security marking

@@ -414,10 +419,11 @@ struct sk_buff {
 	__u8			ndisc_nodetype:2;
 #endif
 	__u8			ooo_okay:1;
+	__u8			wifi_acked_valid:1;
+	__u8			wifi_acked:1;
+	/* 11/13 bit hole (depending on nodetype presence) */
 	kmemcheck_bitfield_end(flags2);
 
-	/* 0/13 bit hole */
-
 #ifdef CONFIG_NET_DMA
 	dma_cookie_t		dma_cookie;
 #endif

@@ -2062,6 +2068,15 @@ static inline void skb_tx_timestamp(stru
 	sw_tx_timestamp(skb);
 }
 
+/**
+ * skb_complete_wifi_ack - deliver skb with wifi status
+ *
+ * @skb: the original outgoing packet
+ * @acked: ack status
+ *
+ */
+void skb_complete_wifi_ack(struct sk_buff *skb, bool acked);
+
 extern __sum16 __skb_checksum_complete_head(struct sk_buff *skb, int len);
 extern __sum16 __skb_checksum_complete(struct sk_buff *skb);
 

@@ -3150,6 +3150,26 @@ void skb_tstamp_tx(struct sk_buff *orig_
 }
 EXPORT_SYMBOL_GPL(skb_tstamp_tx);
 
+void skb_complete_wifi_ack(struct sk_buff *skb, bool acked)
+{
+	struct sock *sk = skb->sk;
+	struct sock_exterr_skb *serr;
+	int err;
+
+	skb->wifi_acked_valid = 1;
+	skb->wifi_acked = acked;
+
+	serr = SKB_EXT_ERR(skb);
+	memset(serr, 0, sizeof(*serr));
+	serr->ee.ee_errno = ENOMSG;
+	serr->ee.ee_origin = SO_EE_ORIGIN_TXSTATUS;
+
+	err = sock_queue_err_skb(sk, skb);
+	if (err)
+		kfree_skb(skb);
+}
+EXPORT_SYMBOL_GPL(skb_complete_wifi_ack);
+
 
 /**
  * skb_partial_csum_set - set up and verify partial csum values for packet

@@ -531,6 +531,7 @@ void sock_release(struct socket *sock)
 }
 EXPORT_SYMBOL(sock_release);
 
+/* XXX: rename this function now */
 int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
 {
 	*tx_flags = 0;

@@ -538,6 +539,8 @@ int sock_tx_timestamp(struct sock *sk, _
 		*tx_flags |= SKBTX_HW_TSTAMP;
 	if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE))
 		*tx_flags |= SKBTX_SW_TSTAMP;
+	if (sock_flag(sk, SOCK_WIFI_STATUS))
+		*tx_flags |= SKBTX_WIFI_STATUS;
 	return 0;
 }
 EXPORT_SYMBOL(sock_tx_timestamp);

@@ -674,6 +677,22 @@ void __sock_recv_timestamp(struct msghdr
 }
 EXPORT_SYMBOL_GPL(__sock_recv_timestamp);
 
+void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk,
+	struct sk_buff *skb)
+{
+	int ack;
+
+	if (!sock_flag(sk, SOCK_WIFI_STATUS))
+		return;
+	if (!skb->wifi_acked_valid)
+		return;
+
+	ack = skb->wifi_acked;
+
+	put_cmsg(msg, SOL_SOCKET, SCM_WIFI_STATUS, sizeof(ack), &ack);
+}
+EXPORT_SYMBOL_GPL(__sock_recv_wifi_status);
+
 static inline void sock_recv_drops(struct msghdr *msg, struct sock *sk,
 				   struct sk_buff *skb)
 {

@@ -1137,6 +1137,9 @@ enum nl80211_commands {
  *	with support for the features listed in this attribute, see
  *	&enum nl80211_ap_sme_features.
  *
+ * @NL80211_ATTR_FEATURE_FLAGS: This u32 attribute contains flags from
+ *	&enum nl80211_feature_flags and is advertised in wiphy information.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */

@@ -1367,6 +1370,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_DEVICE_AP_MLME,
 
+	NL80211_ATTR_FEATURE_FLAGS,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

@@ -2693,4 +2698,14 @@ enum nl80211_ap_sme_features {
 	NL80211_AP_SME_WSC	= 1 << 0,
 };
 
+/**
+ * enum nl80211_feature_flags - device/driver features
+ * @NL80211_FEATURE_SK_TX_STATUS: This driver supports reflecting back
+ *	TX status to the socket error queue when requested with the
+ *	socket option.
+ */
+enum nl80211_feature_flags {
+	NL80211_FEATURE_SK_TX_STATUS	= 1 << 0,
+};
+
 #endif /* __LINUX_NL80211_H */

@@ -1873,6 +1873,7 @@ struct wiphy_wowlan_support {
  * @software_iftypes: bitmask of software interface types, these are not
  *	subject to any restrictions since they are purely managed in SW.
  * @flags: wiphy flags, see &enum wiphy_flags
+ * @features: features advertised to nl80211, see &enum nl80211_feature_flags.
  * @bss_priv_size: each BSS struct has private data allocated with it,
  *	this variable determines its size
  * @max_scan_ssids: maximum number of SSIDs the device can scan for in

@@ -1934,7 +1935,7 @@ struct wiphy {
 	/* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */
 	u16 interface_modes;
 
-	u32 flags;
+	u32 flags, features;
 
 	u32 ap_sme_capa;
 

@@ -1013,6 +1013,8 @@ static int nl80211_send_wiphy(struct sk_
 		NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_MLME,
 			    dev->wiphy.ap_sme_capa);
 
+	NLA_PUT_U32(msg, NL80211_ATTR_FEATURE_FLAGS, dev->wiphy.features);
+
 	return genlmsg_end(msg, hdr);
 
  nla_put_failure:

@@ -548,6 +548,24 @@ void ieee80211_tx_status(struct ieee8021
 		}
 	}
 
+	if (unlikely(info->ack_frame_id)) {
+		struct sk_buff *ack_skb;
+		unsigned long flags;
+
+		spin_lock_irqsave(&local->ack_status_lock, flags);
+		ack_skb = idr_find(&local->ack_status_frames,
+				   info->ack_frame_id);
+		if (ack_skb)
+			idr_remove(&local->ack_status_frames,
+				   info->ack_frame_id);
+		spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+		/* consumes ack_skb */
+		if (ack_skb)
+			skb_complete_wifi_ack(ack_skb,
+				info->flags & IEEE80211_TX_STAT_ACK);
+	}
+
 	/* this was a transmitted frame, but now we want to reuse it */
 	skb_orphan(skb);
 

@@ -621,6 +639,26 @@ EXPORT_SYMBOL(ieee80211_report_low_ack);
 
 void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb)
 {
+	struct ieee80211_local *local = hw_to_local(hw);
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+	if (unlikely(info->ack_frame_id)) {
+		struct sk_buff *ack_skb;
+		unsigned long flags;
+
+		spin_lock_irqsave(&local->ack_status_lock, flags);
+		ack_skb = idr_find(&local->ack_status_frames,
+				   info->ack_frame_id);
+		if (ack_skb)
+			idr_remove(&local->ack_status_frames,
+				   info->ack_frame_id);
+		spin_unlock_irqrestore(&local->ack_status_lock, flags);
+
+		/* consumes ack_skb */
+		if (ack_skb)
+			dev_kfree_skb_any(ack_skb);
+	}
+
 	dev_kfree_skb_any(skb);
 }
 EXPORT_SYMBOL(ieee80211_free_txskb);

85 lines not on this page · raw message

@@ -518,7 +518,7 @@ struct ieee80211_tx_rate {
  * @flags: transmit info flags, defined above
  * @band: the band to transmit on (use for checking for races)
  * @antenna_sel_tx: antenna to use, 0 for automatic diversity
- * @pad: padding, ignore
+ * @ack_frame_id: internal frame ID for TX status, used internally
  * @control: union for control data
  * @status: union for status data
  * @driver_data: array of driver_data pointers

@@ -535,8 +535,7 @@ struct ieee80211_tx_info {
 
 	u8 antenna_sel_tx;
 
-	/* 2 byte hole */
-	u8 pad[2];
+	u16 ack_frame_id;
 
 	union {
 		struct {

@@ -24,6 +24,7 @@
 #include <linux/spinlock.h>
 #include <linux/etherdevice.h>
 #include <linux/leds.h>
+#include <linux/idr.h>
 #include <net/ieee80211_radiotap.h>
 #include <net/cfg80211.h>
 #include <net/mac80211.h>

@@ -1013,6 +1014,9 @@ struct ieee80211_local {
 	u32 hw_roc_cookie;
 	bool hw_roc_for_tx;
 
+	struct idr ack_status_frames;
+	spinlock_t ack_status_lock;
+
 	/* dummy netdev for use w/ NAPI */
 	struct net_device napi_dev;
 

@@ -597,6 +597,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(
 			WIPHY_FLAG_4ADDR_AP |
 			WIPHY_FLAG_4ADDR_STATION;
 
+	wiphy->features = NL80211_FEATURE_SK_TX_STATUS;
+
 	if (!ops->set_key)
 		wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 

@@ -670,6 +672,11 @@ struct ieee80211_hw *ieee80211_alloc_hw(
 	INIT_WORK(&local->sched_scan_stopped_work,
 		  ieee80211_sched_scan_stopped_work);
 
+	spin_lock_init(&local->ack_status_lock);
+	idr_init(&local->ack_status_frames);
+	/* preallocate at least one entry */
+	idr_pre_get(&local->ack_status_frames, GFP_KERNEL);
+
 	sta_info_init(local);
 
 	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {

@@ -1045,6 +1052,13 @@ void ieee80211_unregister_hw(struct ieee
 }
 EXPORT_SYMBOL(ieee80211_unregister_hw);
 
+static int ieee80211_free_ack_frame(int id, void *p, void *data)
+{
+	WARN_ONCE(1, "Have pending ack frames!\n");
+	kfree_skb(p);
+	return 0;
+}
+
 void ieee80211_free_hw(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);

@@ -1055,6 +1069,10 @@ void ieee80211_free_hw(struct ieee80211_
 	if (local->wiphy_ciphers_allocated)
 		kfree(local->hw.wiphy->cipher_suites);
 
+	idr_for_each(&local->ack_status_frames,
+		     ieee80211_free_ack_frame, NULL);
+	idr_destroy(&local->ack_status_frames);
+
 	wiphy_free(local->hw.wiphy);
 }
 EXPORT_SYMBOL(ieee80211_free_hw);

@@ -54,6 +54,8 @@ struct cfg80211_registered_device {
 	int opencount; /* also protected by devlist_mtx */
 	wait_queue_head_t dev_wait;
 
+	u32 ap_beacons_nlpid;
+
 	/* BSSes/scanning */
 	spinlock_t bss_lock;
 	struct list_head bss_list;

@@ -528,6 +528,11 @@
  *	up the event with the request. The event includes the same data and
  *	has %NL80211_ATTR_ACK set if the frame was ACKed.
  *
+ * @NL80211_CMD_REGISTER_BEACONS: Register this socket to receive beacons from
+ *	other BSSes when any interfaces are in AP mode. This helps implement
+ *	OLBC handling in hostapd. Beacons are reported in %NL80211_CMD_FRAME
+ *	messages. Note that per PHY only one application may register.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */

@@ -661,6 +666,8 @@ enum nl80211_commands {
 
 	NL80211_CMD_PROBE_CLIENT,
 
+	NL80211_CMD_REGISTER_BEACONS,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */

102 lines not on this page · raw message

@@ -1682,6 +1682,9 @@ struct cfg80211_ops {
  *	command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
  *	used for asking the driver/firmware to perform a TDLS operation.
  * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
+ * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes
+ *	when there are virtual interfaces in AP mode by calling
+ *	cfg80211_report_obss_beacon().
  */
 enum wiphy_flags {
 	WIPHY_FLAG_CUSTOM_REGULATORY		= BIT(0),

@@ -1701,6 +1704,7 @@ enum wiphy_flags {
 	WIPHY_FLAG_SUPPORTS_TDLS		= BIT(15),
 	WIPHY_FLAG_TDLS_EXTERNAL_SETUP		= BIT(16),
 	WIPHY_FLAG_HAVE_AP_SME			= BIT(17),
+	WIPHY_FLAG_REPORTS_OBSS			= BIT(18),
 };
 
 /**

@@ -3228,6 +3232,22 @@ bool cfg80211_rx_spurious_frame(struct n
 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
 			   u64 cookie, bool acked, gfp_t gfp);
 
+/**
+ * cfg80211_report_obss_beacon - report beacon from other APs
+ * @wiphy: The wiphy that received the beacon
+ * @frame: the frame
+ * @len: length of the frame
+ * @freq: frequency the frame was received on
+ * @gfp: allocation flags
+ *
+ * Use this function to report to userspace when a beacon was
+ * received. It is not useful to call this when there is no
+ * netdev that is in AP/GO mode.
+ */
+void cfg80211_report_obss_beacon(struct wiphy *wiphy,
+				 const u8 *frame, size_t len,
+				 int freq, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */

@@ -185,12 +185,15 @@ enum ieee80211_packet_rx_flags {
  * enum ieee80211_rx_flags - RX data flags
  *
  * @IEEE80211_RX_CMNTR: received on cooked monitor already
+ * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
+ *	to cfg80211_report_obss_beacon().
  *
  * These flags are used across handling multiple interfaces
  * for a single frame.
  */
 enum ieee80211_rx_flags {
 	IEEE80211_RX_CMNTR		= BIT(0),
+	IEEE80211_RX_BEACON_REPORTED	= BIT(1),
 };
 
 struct ieee80211_rx_data {

@@ -595,7 +595,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(
 
 	wiphy->flags |= WIPHY_FLAG_NETNS_OK |
 			WIPHY_FLAG_4ADDR_AP |
-			WIPHY_FLAG_4ADDR_STATION;
+			WIPHY_FLAG_4ADDR_STATION |
+			WIPHY_FLAG_REPORTS_OBSS;
 
 	wiphy->features = NL80211_FEATURE_SK_TX_STATUS;
 

@@ -2177,6 +2177,18 @@ ieee80211_rx_h_mgmt_check(struct ieee802
 	if (!ieee80211_is_mgmt(mgmt->frame_control))
 		return RX_DROP_MONITOR;
 
+	if (rx->sdata->vif.type == NL80211_IFTYPE_AP &&
+	    ieee80211_is_beacon(mgmt->frame_control) &&
+	    !(rx->flags & IEEE80211_RX_BEACON_REPORTED)) {
+		struct ieee80211_rx_status *status;
+
+		status = IEEE80211_SKB_RXCB(rx->skb);
+		cfg80211_report_obss_beacon(rx->local->hw.wiphy,
+					    rx->skb->data, rx->skb->len,
+					    status->freq, GFP_ATOMIC);
+		rx->flags |= IEEE80211_RX_BEACON_REPORTED;
+	}
+
 	if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
 		return RX_DROP_MONITOR;
 

@@ -1147,6 +1147,11 @@ enum nl80211_commands {
  * @NL80211_ATTR_FEATURE_FLAGS: This u32 attribute contains flags from
  *	&enum nl80211_feature_flags and is advertised in wiphy information.
  *
+ * @NL80211_ATTR_DONT_WAIT_FOR_ACK: Used with %NL80211_CMD_FRAME, this tells
+ *	the driver to not wait for an acknowledgement. Note that due to this,
+ *	it will also not give a status callback nor return a cookie. This is
+ *	mostly useful for probe responses to save airtime.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */

@@ -1379,6 +1384,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_FEATURE_FLAGS,
 
+	NL80211_ATTR_DONT_WAIT_FOR_ACK,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

@@ -378,7 +378,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie);
+			  bool dont_wait_for_ack, u64 *cookie);
 
 /* SME */
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,

@@ -904,7 +904,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie)
+			  bool dont_wait_for_ack, u64 *cookie)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	const struct ieee80211_mgmt *mgmt;

@@ -995,7 +995,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 	/* Transmit the Action frame as requested by user space */
 	return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
 				  channel_type, channel_type_valid,
-				  wait, buf, len, no_cck, cookie);
+				  wait, buf, len, no_cck, dont_wait_for_ack,
+				  cookie);
 }
 
 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,

71 lines not on this page · raw message

@@ -1584,7 +1584,7 @@ struct cfg80211_ops {
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie);
+			  bool dont_wait_for_ack, u64 *cookie);
 	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
 				       struct net_device *dev,
 				       u64 cookie);

@@ -1936,7 +1936,7 @@ static int ieee80211_mgmt_tx(struct wiph
 			     enum nl80211_channel_type channel_type,
 			     bool channel_type_valid, unsigned int wait,
 			     const u8 *buf, size_t len, bool no_cck,
-			     u64 *cookie)
+			     bool dont_wait_for_ack, u64 *cookie)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_local *local = sdata->local;

@@ -1944,10 +1944,15 @@ static int ieee80211_mgmt_tx(struct wiph
 	struct sta_info *sta;
 	struct ieee80211_work *wk;
 	const struct ieee80211_mgmt *mgmt = (void *)buf;
-	u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
-		    IEEE80211_TX_CTL_REQ_TX_STATUS;
+	u32 flags;
 	bool is_offchan = false;
 
+	if (!dont_wait_for_ack)
+		flags = IEEE80211_TX_CTL_NO_ACK;
+	else
+		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
+			IEEE80211_TX_CTL_REQ_TX_STATUS;
+
 	/* Check that we are on the requested channel for transmission */
 	if (chan != local->tmp_channel &&
 	    chan != local->oper_channel)

@@ -1732,7 +1732,8 @@ static int ath6kl_mgmt_tx(struct wiphy *
 			  struct ieee80211_channel *chan, bool offchan,
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
-			  const u8 *buf, size_t len, bool no_cck, u64 *cookie)
+			  const u8 *buf, size_t len, bool no_cck,
+			  bool dont_wait_for_ack, u64 *cookie)
 {
 	struct ath6kl *ar = ath6kl_priv(dev);
 	u32 id;

@@ -1147,6 +1147,11 @@ enum nl80211_commands {
  * @NL80211_ATTR_FEATURE_FLAGS: This u32 attribute contains flags from
  *	&enum nl80211_feature_flags and is advertised in wiphy information.
  *
+ * @NL80211_ATTR_DONT_WAIT_FOR_ACK: Used with %NL80211_CMD_FRAME, this tells
+ *	the driver to not wait for an acknowledgement. Note that due to this,
+ *	it will also not give a status callback nor return a cookie. This is
+ *	mostly useful for probe responses to save airtime.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */

@@ -1379,6 +1384,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_FEATURE_FLAGS,
 
+	NL80211_ATTR_DONT_WAIT_FOR_ACK,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

@@ -378,7 +378,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie);
+			  bool dont_wait_for_ack, u64 *cookie);
 
 /* SME */
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,

@@ -904,7 +904,7 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie)
+			  bool dont_wait_for_ack, u64 *cookie)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	const struct ieee80211_mgmt *mgmt;

@@ -995,7 +995,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg8021
 	/* Transmit the Action frame as requested by user space */
 	return rdev->ops->mgmt_tx(&rdev->wiphy, dev, chan, offchan,
 				  channel_type, channel_type_valid,
-				  wait, buf, len, no_cck, cookie);
+				  wait, buf, len, no_cck, dont_wait_for_ack,
+				  cookie);
 }
 
 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf,

71 lines not on this page · raw message

@@ -1584,7 +1584,7 @@ struct cfg80211_ops {
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
 			  const u8 *buf, size_t len, bool no_cck,
-			  u64 *cookie);
+			  bool dont_wait_for_ack, u64 *cookie);
 	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
 				       struct net_device *dev,
 				       u64 cookie);

@@ -1936,7 +1936,7 @@ static int ieee80211_mgmt_tx(struct wiph
 			     enum nl80211_channel_type channel_type,
 			     bool channel_type_valid, unsigned int wait,
 			     const u8 *buf, size_t len, bool no_cck,
-			     u64 *cookie)
+			     bool dont_wait_for_ack, u64 *cookie)
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_local *local = sdata->local;

@@ -1944,10 +1944,15 @@ static int ieee80211_mgmt_tx(struct wiph
 	struct sta_info *sta;
 	struct ieee80211_work *wk;
 	const struct ieee80211_mgmt *mgmt = (void *)buf;
-	u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
-		    IEEE80211_TX_CTL_REQ_TX_STATUS;
+	u32 flags;
 	bool is_offchan = false;
 
+	if (dont_wait_for_ack)
+		flags = IEEE80211_TX_CTL_NO_ACK;
+	else
+		flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
+			IEEE80211_TX_CTL_REQ_TX_STATUS;
+
 	/* Check that we are on the requested channel for transmission */
 	if (chan != local->tmp_channel &&
 	    chan != local->oper_channel)

@@ -1732,7 +1732,8 @@ static int ath6kl_mgmt_tx(struct wiphy *
 			  struct ieee80211_channel *chan, bool offchan,
 			  enum nl80211_channel_type channel_type,
 			  bool channel_type_valid, unsigned int wait,
-			  const u8 *buf, size_t len, bool no_cck, u64 *cookie)
+			  const u8 *buf, size_t len, bool no_cck,
+			  bool dont_wait_for_ack, u64 *cookie)
 {
 	struct ath6kl *ar = ath6kl_priv(dev);
 	u32 id;