multiple bssid and EMA support in AP mode

index 5224f885a99a..8709a4b8d944 100644
@@ -1033,6 +1033,38 @@ struct cfg80211_crypto_settings {
 	enum nl80211_sae_pwe_mechanism sae_pwe;
 };
 
+/**
+ * struct cfg80211_mbssid_config - AP settings for multi bssid
+ *
+ * @parent: interface index of the transmitted profile in the MBSSID set
+ * @index: index of this AP in the multi bssid group.
+ * @count: the total number of multi bssid peer APs.
+ * @ema: Shall the beacons be sent out in EMA mode.
+ */
+struct cfg80211_mbssid_config {
+	u32 parent;
+	u8 index;
+	u8 count;
+	bool ema;
+};
+
+/**
+ * struct cfg80211_mbssid_elems - Multiple BSSID elements
+ *
+ * @cnt: Number of elements in array %elems.
+ *
+ * @elem: Array of multiple BSSID element(s) to be added into Beacon frames.
+ * @elem.data: Data for multiple BSSID elements.
+ * @elem.len: Length of data.
+ */
+struct cfg80211_mbssid_elems {
+	u8 cnt;
+	struct {
+		u8 *data;
+		size_t len;
+	} elem[];
+};
+
 /**
  * struct cfg80211_beacon_data - beacon data
  * @head: head portion of beacon (before TIM IE)

@@ -1051,6 +1083,7 @@ struct cfg80211_crypto_settings {
  * @assocresp_ies_len: length of assocresp_ies in octets
  * @probe_resp_len: length of probe response template (@probe_resp)
  * @probe_resp: probe response template (AP mode only)
+ * @mbssid: multiple BSSID elements
  * @ftm_responder: enable FTM responder functionality; -1 for no change
  *	(which also implies no change in LCI/civic location data)
  * @lci: Measurement Report element content, starting with Measurement Token

@@ -1068,6 +1101,7 @@ struct cfg80211_beacon_data {
 	const u8 *probe_resp;
 	const u8 *lci;
 	const u8 *civicloc;
+	struct cfg80211_mbssid_elems *mbssid;
 	s8 ftm_responder;
 
 	size_t head_len, tail_len;

@@ -1182,6 +1216,7 @@ enum cfg80211_ap_settings_flags {
  * @he_oper: HE operation IE (or %NULL if HE isn't enabled)
  * @fils_discovery: FILS discovery transmission parameters
  * @unsol_bcast_probe_resp: Unsolicited broadcast probe response parameters
+ * @mbssid: AP settings for multiple bssid
  */
 struct cfg80211_ap_settings {
 	struct cfg80211_chan_def chandef;

@@ -1214,6 +1249,7 @@ struct cfg80211_ap_settings {
 	struct cfg80211_he_bss_color he_bss_color;
 	struct cfg80211_fils_discovery fils_discovery;
 	struct cfg80211_unsol_bcast_probe_resp unsol_bcast_probe_resp;
+	struct cfg80211_mbssid_config mbssid;
 };
 
 /**

@@ -4945,6 +4981,16 @@ struct wiphy_iftype_akm_suites {
  *	configuration through the %NL80211_TID_CONFIG_ATTR_RETRY_SHORT and
  *	%NL80211_TID_CONFIG_ATTR_RETRY_LONG attributes
  * @sar_capa: SAR control capabilities
+ *
+ * @mbssid: Describes driver's multiple BSSID configuration support
+ * @mbssid.max_interfaces: maximum number of interfaces supported by the driver
+ *	in a multiple BSSID set that can ben configured using
+ *	%NL80211_MBSSID_CONFIG_ATTR_COUNT.
+ *	Kernel supports only one MBSSID per wiphy.
+ * @mbssid.max_periodicity: maximum profile periodicity supported by the driver
+ *	that can be configured using %NL80211_MBSSID_ELEMS_ATTR_COUNT.
+ *	This value is used only when enhanced multi-BSSID advertisements feature
+ *	is enabled through %NL80211_MBSSID_CONFIG_ATTR_EMA flag.
  */
 struct wiphy {
 	struct mutex mtx;

@@ -5087,6 +5133,11 @@ struct wiphy {
 
 	const struct cfg80211_sar_capa *sar_capa;
 
+	struct {
+		u8 max_interfaces;
+		u8 max_periodicity;
+	} mbssid;
+
 	char priv[] __aligned(NETDEV_ALIGN);
 };
 

135 lines not on this page · raw message

441 lines not on this page · raw message

index 445b66c6eb7e..ca83bfe14355 100644
@@ -631,6 +631,7 @@ struct ieee80211_fils_discovery {
  * @s1g: BSS is S1G BSS (affects Association Request format).
  * @beacon_tx_rate: The configured beacon transmit rate that needs to be passed
  *	to driver when rate control is offloaded to firmware.
+ * @mbssid: Multiple bssid settings for AP mode
  */
 struct ieee80211_bss_conf {
 	const u8 *bssid;

@@ -700,6 +701,7 @@ struct ieee80211_bss_conf {
 	u32 unsol_bcast_probe_resp_interval;
 	bool s1g;
 	struct cfg80211_bitrate_mask beacon_tx_rate;
+	struct cfg80211_mbssid_config mbssid;
 };
 
 /**

@@ -1663,6 +1665,20 @@ enum ieee80211_offload_flags {
 	IEEE80211_OFFLOAD_DECAP_ENABLED		= BIT(2),
 };
 
+/**
+ * enum ieee80211_vif_mbssid_flags - virtual interface multiple bssid flags
+ *
+ * @IEEE80211_VIF_MBSSID_TX: Set for the transmitting profile.
+ * @IEEE80211_VIF_MBSSID_NON_TX: Set for non-transmitting profiles.
+ * @IEEE80211_VIF_MBSSID_EMA: Set when enhanced multi-BSS advertisements
+ *	are enabled.
+ */
+enum ieee80211_vif_mbssid_flags {
+	IEEE80211_VIF_MBSSID_TX     = BIT(1),
+	IEEE80211_VIF_MBSSID_NON_TX = BIT(2),
+	IEEE80211_VIF_MBSSID_EMA    = BIT(3),
+};
+
 /**
  * struct ieee80211_vif - per-interface data
  *

@@ -1709,6 +1725,10 @@ enum ieee80211_offload_flags {
  *	protected by fq->lock.
  * @offload_flags: 802.3 -> 802.11 enapsulation offload flags, see
  *	&enum ieee80211_offload_flags.
+ *
+ * @mbssid: Multiple BSSID configurations.
+ * @mbssid.parent: Interface index of the transmitted BSS.
+ * @mbssid.flags: multiple bssid flags, see enum ieee80211_vif_mbssid_flags.
  */
 struct ieee80211_vif {
 	enum nl80211_iftype type;

@@ -1737,6 +1757,11 @@ struct ieee80211_vif {
 
 	bool txqs_stopped[IEEE80211_NUM_ACS];
 
+	struct {
+		struct ieee80211_vif *parent;
+		u32 flags;
+	} mbssid;
+
 	/* must be last */
 	u8 drv_priv[] __aligned(sizeof(void *));
 };

@@ -2381,7 +2406,7 @@ struct ieee80211_txq {
  * @IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN: Driver does not report accurate A-MPDU
  *	length in tx status information
  *
- * @IEEE80211_HW_SUPPORTS_MULTI_BSSID: Hardware supports multi BSSID
+ * @IEEE80211_HW_SUPPORTS_MULTI_BSSID: Hardware supports multi BSSID in STA mode
  *
  * @IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID: Hardware supports multi BSSID
  *	only for HE APs. Applies if @IEEE80211_HW_SUPPORTS_MULTI_BSSID is set.

@@ -2402,6 +2427,11 @@ struct ieee80211_txq {
  *	usage and 802.11 frames with %RX_FLAG_ONLY_MONITOR set for monitor to
  *	the stack.
  *
+ * @IEEE80211_HW_SUPPORTS_MBSSID_AP: Hardware supports multiple BSSID
+ *	advertisements in AP mode.
+ * @IEEE80211_HW_SUPPORTS_EMA_AP: Hardware supports enhanced multiple BSSID
+ *	advertisements in AP mode.
+ *
  * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
  */
 enum ieee80211_hw_flags {

@@ -2457,6 +2487,8 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_SUPPORTS_TX_ENCAP_OFFLOAD,
 	IEEE80211_HW_SUPPORTS_RX_DECAP_OFFLOAD,
 	IEEE80211_HW_SUPPORTS_CONC_MON_RX_DECAP,
+	IEEE80211_HW_SUPPORTS_MBSSID_AP,
+	IEEE80211_HW_SUPPORTS_EMA_AP,
 
 	/* keep last, obviously */
 	NUM_IEEE80211_HW_FLAGS

92 lines not on this page · raw message

index 9245c0421bda..00e5089a4a6c 100644
@@ -457,6 +457,8 @@ static const char *hw_flag_names[] = {
 	FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
 	FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
 	FLAG(SUPPORTS_CONC_MON_RX_DECAP),
+	FLAG(SUPPORTS_MBSSID_AP),
+	FLAG(SUPPORTS_EMA_AP),
 #undef FLAG
 };
 

index b1c170939e44..1ab75d464569 100644
@@ -375,6 +375,18 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do
 	struct cfg80211_chan_def chandef;
 	bool cancel_scan;
 	struct cfg80211_nan_func *func;
+	struct ieee80211_sub_if_data *parent;
+
+	if (sdata->vif.type == NL80211_IFTYPE_AP &&
+	    ieee80211_hw_check(&local->hw, SUPPORTS_MBSSID_AP) &&
+	    sdata->vif.mbssid.flags & IEEE80211_VIF_MBSSID_NON_TX) {
+		parent = vif_to_sdata(sdata->vif.mbssid.parent);
+		if (parent && ieee80211_sdata_running(parent)) {
+			wiphy_unlock(local->hw.wiphy);
+			dev_close(parent->wdev.netdev);
+			wiphy_lock(local->hw.wiphy);
+		}
+	}
 
 	clear_bit(SDATA_STATE_RUNNING, &sdata->state);
 

index ca83bfe14355..a5bc0d996cbe 100644
@@ -4897,12 +4897,14 @@ void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets);
  * @cntdwn_counter_offs: array of IEEE80211_MAX_CNTDWN_COUNTERS_NUM offsets
  *	to countdown counters.  This array can contain zero values which
  *	should be ignored.
+ * @mbssid_offset: position of the multiple bssid element
  */
 struct ieee80211_mutable_offsets {
 	u16 tim_offset;
 	u16 tim_length;
 
 	u16 cntdwn_counter_offs[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
+	u16 mbssid_offset;
 };
 
 /**

@@ -4929,6 +4931,93 @@ ieee80211_beacon_get_template(struct ieee80211_hw *hw,
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_mutable_offsets *offs);
 
+/**
+ * enum ieee80211_bcn_tmpl_ema - EMA beacon generation type
+ *
+ * When enhanced multi-BSSID advertisements (EMA) mode is enabled, the
+ * non-transmitting profiles from the multiple BSSID set are split into more
+ * than one multiple BSSID elements if required. Each EMA beacon includes only
+ * one element to reduce the total size. The number of beacons required to
+ * cover all profiles is called as the profile periodicity of the set.
+ *
+ * In MAC80211, the multiple BSSID elements passed by the application are
+ * stored in a array and the index of the next element (starting from 0) to be
+ * included in the beacon template is tracked through the member ema_index of
+ * struct beacon_data.
+ *
+ * @IEEE80211_BCN_EMA_NONE: Used when EMA is disabled. Only one beacon
+ *	template will be generated which includes all multiple BSSID elements.
+ * @IEEE80211_BCN_EMA_NEXT: Used when EMA is enabled. Includes the next
+ *	multiple BSSID element while generating the beacon template.
+ * @IEEE80211_BCN_EMA_BASE: Used when EMA is enabled. Beacon template includes
+ *	the multiple MBSSID element at a specified index which should be set
+ *	to a value more than or equal to IEEE80211_BCN_EMA_BASE.
+ */
+enum ieee80211_bcn_tmpl_ema {
+	IEEE80211_BCN_EMA_NONE = -2,
+	IEEE80211_BCN_EMA_NEXT = -1,
+	IEEE80211_BCN_EMA_BASE = 0,
+};
+
+/**
+ * ieee80211_beacon_get_template_ema_next - EMA beacon template generation
+ *	function for drivers using the sw offload path.
+ * @hw: pointer obtained from ieee80211_alloc_hw().
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @offs: &struct ieee80211_mutable_offsets pointer to struct that will
+ *	receive the offsets that may be updated by the driver.
+ *
+ * This function follows the same rules as ieee80211_beacon_get_template()
+ * but returns a beacon template which includes the next multiple BSSID
+ * element.
+ *
+ * Return: The beacon template. %NULL on error.
+ */
+struct sk_buff *ieee80211_beacon_get_template_ema_next(struct ieee80211_hw *hw,
+						       struct ieee80211_vif *vif,
+						       struct ieee80211_mutable_offsets *offs);
+
+/**
+ * struct ieee80211_ema_bcn_list - list entry of an EMA beacon
+ * @list: the list pointer.
+ * @skb: the skb containing this specific beacon
+ * @offs: &struct ieee80211_mutable_offsets pointer to struct that will
+ *	receive the offsets that may be updated by the driver.
+ */
+struct ieee80211_ema_bcn_list {
+	struct list_head list;
+	struct sk_buff *skb;
+	struct ieee80211_mutable_offsets offs;
+};
+
+/**
+ * ieee80211_beacon_get_template_ema_list - EMA beacon template generation
+ *	function for drivers using the hw offload.
+ * @hw: pointer obtained from ieee80211_alloc_hw().
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @head: linked list head that will get populated with
+ *	&struct ieee80211_ema_bcn_list pointers.
+ *
+ * This function follows the same rules as ieee80211_beacon_get_template()
+ * but returns a linked list of all beacon templates required to cover all
+ * profiles in the multiple BSSID set. Each template includes only one multiple
+ * BSSID element.
+ *
+ * Return: The nuber of entries in the list or 0 on error.
+ */
+int ieee80211_beacon_get_template_ema_list(struct ieee80211_hw *hw,
+					   struct ieee80211_vif *vif,
+					   struct list_head *head);
+
+/**
+ * ieee80211_beacon_free_ema_list - free an EMA beacon template list
+ * @head: linked list head containing &struct ieee80211_ema_bcn_list pointers.
+ *
+ * This function will free a list previously acquired by calling
+ * ieee80211_beacon_get_template_ema_list()
+ */
+void ieee80211_beacon_free_ema_list(struct list_head *head);
+
 /**
  * ieee80211_beacon_get_tim - beacon generation function
  * @hw: pointer obtained from ieee80211_alloc_hw().

222 lines not on this page · raw message

index 8fcbaa1eedf3..cc9455434ddc 100644
@@ -261,6 +261,8 @@ struct beacon_data {
 	struct ieee80211_meshconf_ie *meshconf;
 	u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
 	u8 cntdwn_current_counter;
+	struct cfg80211_mbssid_elems *mbssid;
+	u16 ema_index;
 	struct rcu_head rcu_head;
 };
 

293 lines not on this page · raw message

index db21e1a621b1..5ca75a23d54c 100644
@@ -3254,8 +3254,21 @@ void ieee80211_csa_finish(struct ieee80211_vif *vif)
 {
 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
 
-	ieee80211_queue_work(&sdata->local->hw,
-			     &sdata->csa_finalize_work);
+	if (sdata->vif.mbssid.flags & IEEE80211_VIF_MBSSID_TX) {
+		struct ieee80211_sub_if_data *child;
+
+		wiphy_unlock(sdata->local->hw.wiphy);
+		mutex_lock(&sdata->local->iflist_mtx);
+		list_for_each_entry(child, &sdata->local->interfaces, list)
+			if (child->vif.mbssid.parent == vif &&
+			    ieee80211_sdata_running(child))
+				ieee80211_queue_work(&child->local->hw,
+						     &child->csa_finalize_work);
+		mutex_unlock(&sdata->local->iflist_mtx);
+		wiphy_lock(sdata->local->hw.wiphy);
+	}
+
+	ieee80211_queue_work(&sdata->local->hw, &sdata->csa_finalize_work);
 }
 EXPORT_SYMBOL(ieee80211_csa_finish);