1 files changed, 200 insertions, 65 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 31ca320ce38d..35f251041eeb 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1639,7 +1639,7 @@ static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data,
 
 		hci_dev_set_flag(hdev, HCI_LE_ADV);
 
-		if (adv)
+		if (adv && !adv->periodic)
 			adv->enabled = true;
 
 		conn = hci_lookup_le_connect(hdev);
@@ -1747,7 +1747,7 @@ static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
 {
 	struct discovery_state *d = &hdev->discovery;
 
-	if (len > HCI_MAX_AD_LENGTH)
+	if (len > max_adv_len(hdev))
 		return;
 
 	bacpy(&d->last_adv_addr, bdaddr);
@@ -3173,19 +3173,15 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
 	 * As the connection handle is set here for the first time, it indicates
 	 * whether the connection is already set up.
 	 */
-	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+	if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
 		bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
 		goto unlock;
 	}
 
 	if (!status) {
-		conn->handle = __le16_to_cpu(ev->handle);
-		if (conn->handle > HCI_CONN_HANDLE_MAX) {
-			bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
-				   conn->handle, HCI_CONN_HANDLE_MAX);
-			status = HCI_ERROR_INVALID_PARAMETERS;
+		status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
+		if (status)
 			goto done;
-		}
 
 		if (conn->type == ACL_LINK) {
 			conn->state = BT_CONFIG;
@@ -3803,6 +3799,22 @@ static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data,
 	return rp->status;
 }
 
+static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status)
+{
+	struct hci_conn *conn, *tmp;
+
+	lockdep_assert_held(&hdev->lock);
+
+	list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) {
+		if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) ||
+		    conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig)
+			continue;
+
+		if (HCI_CONN_HANDLE_UNSET(conn->handle))
+			hci_conn_failed(conn, status);
+	}
+}
+
 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
 				   struct sk_buff *skb)
 {
@@ -3810,6 +3822,7 @@ static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
 	struct hci_cp_le_set_cig_params *cp;
 	struct hci_conn *conn;
 	u8 status = rp->status;
+	bool pending = false;
 	int i;
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
@@ -3823,12 +3836,15 @@ static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
 
 	hci_dev_lock(hdev);
 
+	/* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554
+	 *
+	 * If the Status return parameter is non-zero, then the state of the CIG
+	 * and its CIS configurations shall not be changed by the command. If
+	 * the CIG did not already exist, it shall not be created.
+	 */
 	if (status) {
-		while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) {
-			conn->state = BT_CLOSED;
-			hci_connect_cfm(conn, status);
-			hci_conn_del(conn);
-		}
+		/* Keep current configuration, fail only the unbound CIS */
+		hci_unbound_cis_failed(hdev, rp->cig_id, status);
 		goto unlock;
 	}
 
@@ -3848,17 +3864,17 @@ static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data,
 		if (conn->state != BT_BOUND && conn->state != BT_CONNECT)
 			continue;
 
-		conn->handle = __le16_to_cpu(rp->handle[i]);
-
-		bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn,
-			   conn->handle, conn->parent);
+		if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i])))
+			continue;
 
-		/* Create CIS if LE is already connected */
-		if (conn->parent && conn->parent->state == BT_CONNECTED)
-			hci_le_create_cis(conn);
+		if (conn->state == BT_CONNECT)
+			pending = true;
 	}
 
 unlock:
+	if (pending)
+		hci_le_create_cis_pending(hdev);
+
 	hci_dev_unlock(hdev);
 
 	return rp->status;
@@ -3938,24 +3954,47 @@ static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data,
 				       struct sk_buff *skb)
 {
 	struct hci_ev_status *rp = data;
-	__u8 *sent;
+	struct hci_cp_le_set_per_adv_enable *cp;
+	struct adv_info *adv = NULL, *n;
+	u8 per_adv_cnt = 0;
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", rp->status);
 
 	if (rp->status)
 		return rp->status;
 
-	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
-	if (!sent)
+	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE);
+	if (!cp)
 		return rp->status;
 
 	hci_dev_lock(hdev);
 
-	if (*sent)
+	adv = hci_find_adv_instance(hdev, cp->handle);
+
+	if (cp->enable) {
 		hci_dev_set_flag(hdev, HCI_LE_PER_ADV);
-	else
+
+		if (adv)
+			adv->enabled = true;
+	} else {
+		/* If just one instance was disabled check if there are
+		 * any other instance enabled before clearing HCI_LE_PER_ADV.
+		 * The current periodic adv instance will be marked as
+		 * disabled once extended advertising is also disabled.
+		 */
+		list_for_each_entry_safe(adv, n, &hdev->adv_instances,
+					 list) {
+			if (adv->periodic && adv->enabled)
+				per_adv_cnt++;
+		}
+
+		if (per_adv_cnt > 1)
+			goto unlock;
+
 		hci_dev_clear_flag(hdev, HCI_LE_PER_ADV);
+	}
 
+unlock:
 	hci_dev_unlock(hdev);
 
 	return rp->status;
@@ -4224,6 +4263,7 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data,
 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
 {
 	struct hci_cp_le_create_cis *cp;
+	bool pending = false;
 	int i;
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", status);
@@ -4246,12 +4286,18 @@ static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status)
 
 		conn = hci_conn_hash_lookup_handle(hdev, handle);
 		if (conn) {
+			if (test_and_clear_bit(HCI_CONN_CREATE_CIS,
+					       &conn->flags))
+				pending = true;
 			conn->state = BT_CLOSED;
 			hci_connect_cfm(conn, status);
 			hci_conn_del(conn);
 		}
 	}
 
+	if (pending)
+		hci_le_create_cis_pending(hdev);
+
 	hci_dev_unlock(hdev);
 }
 
@@ -4999,18 +5045,15 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data,
 	 * As the connection handle is set here for the first time, it indicates
 	 * whether the connection is already set up.
 	 */
-	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+	if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
 		bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection");
 		goto unlock;
 	}
 
 	switch (status) {
 	case 0x00:
-		conn->handle = __le16_to_cpu(ev->handle);
-		if (conn->handle > HCI_CONN_HANDLE_MAX) {
-			bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x",
-				   conn->handle, HCI_CONN_HANDLE_MAX);
-			status = HCI_ERROR_INVALID_PARAMETERS;
+		status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle));
+		if (status) {
 			conn->state = BT_CLOSED;
 			break;
 		}
@@ -5863,7 +5906,7 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 	 * As the connection handle is set here for the first time, it indicates
 	 * whether the connection is already set up.
 	 */
-	if (conn->handle != HCI_CONN_HANDLE_UNSET) {
+	if (!HCI_CONN_HANDLE_UNSET(conn->handle)) {
 		bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection");
 		goto unlock;
 	}
@@ -6216,8 +6259,9 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
 		return;
 	}
 
-	if (!ext_adv && len > HCI_MAX_AD_LENGTH) {
-		bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes");
+	if (len > max_adv_len(hdev)) {
+		bt_dev_err_ratelimited(hdev,
+				       "adv larger than maximum supported");
 		return;
 	}
 
@@ -6282,7 +6326,8 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
 	 */
 	conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved,
 				     type);
-	if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
+	if (!ext_adv && conn && type == LE_ADV_IND &&
+	    len <= max_adv_len(hdev)) {
 		/* Store report for later inclusion by
 		 * mgmt_device_connected
 		 */
@@ -6423,7 +6468,7 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data,
 					info->length + 1))
 			break;
 
-		if (info->length <= HCI_MAX_AD_LENGTH) {
+		if (info->length <= max_adv_len(hdev)) {
 			rssi = info->data[info->length];
 			process_adv_report(hdev, info->type, &info->bdaddr,
 					   info->bdaddr_type, NULL, 0, rssi,
@@ -6536,19 +6581,56 @@ static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data,
 	struct hci_ev_le_pa_sync_established *ev = data;
 	int mask = hdev->link_mode;
 	__u8 flags = 0;
+	struct hci_conn *bis;
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
 
-	if (ev->status)
-		return;
-
 	hci_dev_lock(hdev);
 
 	hci_dev_clear_flag(hdev, HCI_PA_SYNC);
 
 	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags);
-	if (!(mask & HCI_LM_ACCEPT))
+	if (!(mask & HCI_LM_ACCEPT)) {
 		hci_le_pa_term_sync(hdev, ev->handle);
+		goto unlock;
+	}
+
+	if (!(flags & HCI_PROTO_DEFER))
+		goto unlock;
+
+	/* Add connection to indicate the PA sync event */
+	bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY,
+			   HCI_ROLE_SLAVE);
+
+	if (!bis)
+		goto unlock;
+
+	if (ev->status)
+		set_bit(HCI_CONN_PA_SYNC_FAILED, &bis->flags);
+	else
+		set_bit(HCI_CONN_PA_SYNC, &bis->flags);
+
+	/* Notify connection to iso layer */
+	hci_connect_cfm(bis, ev->status);
+
+unlock:
+	hci_dev_unlock(hdev);
+}
+
+static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data,
+				      struct sk_buff *skb)
+{
+	struct hci_ev_le_per_adv_report *ev = data;
+	int mask = hdev->link_mode;
+	__u8 flags = 0;
+
+	bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle));
+
+	hci_dev_lock(hdev);
+
+	mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags);
+	if (!(mask & HCI_LM_ACCEPT))
+		hci_le_pa_term_sync(hdev, ev->sync_handle);
 
 	hci_dev_unlock(hdev);
 }
@@ -6790,6 +6872,7 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
 	struct hci_evt_le_cis_established *ev = data;
 	struct hci_conn *conn;
 	struct bt_iso_qos *qos;
+	bool pending = false;
 	u16 handle = __le16_to_cpu(ev->handle);
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
@@ -6813,6 +6896,8 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
 
 	qos = &conn->iso_qos;
 
+	pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags);
+
 	/* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
 	qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
 	qos->ucast.out.interval = qos->ucast.in.interval;
@@ -6854,10 +6939,14 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
 		goto unlock;
 	}
 
+	conn->state = BT_CLOSED;
 	hci_connect_cfm(conn, ev->status);
 	hci_conn_del(conn);
 
 unlock:
+	if (pending)
+		hci_le_create_cis_pending(hdev);
+
 	hci_dev_unlock(hdev);
 }
 
@@ -6936,6 +7025,7 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 {
 	struct hci_evt_le_create_big_complete *ev = data;
 	struct hci_conn *conn;
+	__u8 i = 0;
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
@@ -6944,33 +7034,46 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
 		return;
 
 	hci_dev_lock(hdev);
+	rcu_read_lock();
 
-	conn = hci_conn_hash_lookup_big(hdev, ev->handle);
-	if (!conn)
-		goto unlock;
+	/* Connect all BISes that are bound to the BIG */
+	list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) {
+		if (bacmp(&conn->dst, BDADDR_ANY) ||
+		    conn->type != ISO_LINK ||
+		    conn->iso_qos.bcast.big != ev->handle)
+			continue;
 
-	if (conn->type != ISO_LINK) {
-		bt_dev_err(hdev,
-			   "Invalid connection link type handle 0x%2.2x",
-			   ev->handle);
-		goto unlock;
-	}
+		if (hci_conn_set_handle(conn,
+					__le16_to_cpu(ev->bis_handle[i++])))
+			continue;
 
-	if (ev->num_bis)
-		conn->handle = __le16_to_cpu(ev->bis_handle[0]);
+		if (!ev->status) {
+			conn->state = BT_CONNECTED;
+			set_bit(HCI_CONN_BIG_CREATED, &conn->flags);
+			rcu_read_unlock();
+			hci_debugfs_create_conn(conn);
+			hci_conn_add_sysfs(conn);
+			hci_iso_setup_path(conn);
+			rcu_read_lock();
+			continue;
+		}
 
-	if (!ev->status) {
-		conn->state = BT_CONNECTED;
-		hci_debugfs_create_conn(conn);
-		hci_conn_add_sysfs(conn);
-		hci_iso_setup_path(conn);
-		goto unlock;
+		hci_connect_cfm(conn, ev->status);
+		rcu_read_unlock();
+		hci_conn_del(conn);
+		rcu_read_lock();
 	}
 
-	hci_connect_cfm(conn, ev->status);
-	hci_conn_del(conn);
+	if (!ev->status && !i)
+		/* If no BISes have been connected for the BIG,
+		 * terminate. This is in case all bound connections
+		 * have been closed before the BIG creation
+		 * has completed.
+		 */
+		hci_le_terminate_big_sync(hdev, ev->handle,
+					  HCI_ERROR_LOCAL_HOST_TERM);
 
-unlock:
+	rcu_read_unlock();
 	hci_dev_unlock(hdev);
 }
 
@@ -6979,6 +7082,7 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 {
 	struct hci_evt_le_big_sync_estabilished *ev = data;
 	struct hci_conn *bis;
+	struct hci_conn *pa_sync;
 	int i;
 
 	bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
@@ -6987,11 +7091,17 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 				flex_array_size(ev, bis, ev->num_bis)))
 		return;
 
-	if (ev->status)
-		return;
-
 	hci_dev_lock(hdev);
 
+	if (!ev->status) {
+		pa_sync = hci_conn_hash_lookup_pa_sync(hdev, ev->handle);
+		if (pa_sync)
+			/* Also mark the BIG sync established event on the
+			 * associated PA sync hcon
+			 */
+			set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags);
+	}
+
 	for (i = 0; i < ev->num_bis; i++) {
 		u16 handle = le16_to_cpu(ev->bis[i]);
 		__le32 interval;
@@ -7005,6 +7115,10 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 			bis->handle = handle;
 		}
 
+		if (ev->status != 0x42)
+			/* Mark PA sync as established */
+			set_bit(HCI_CONN_PA_SYNC, &bis->flags);
+
 		bis->iso_qos.bcast.big = ev->handle;
 		memset(&interval, 0, sizeof(interval));
 		memcpy(&interval, ev->latency, sizeof(ev->latency));
@@ -7013,9 +7127,25 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
 		bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100;
 		bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu);
 
-		hci_iso_setup_path(bis);
+		if (!ev->status) {
+			set_bit(HCI_CONN_BIG_SYNC, &bis->flags);
+			hci_iso_setup_path(bis);
+		}
 	}
 
+	/* In case BIG sync failed, notify each failed connection to
+	 * the user after all hci connections have been added
+	 */
+	if (ev->status)
+		for (i = 0; i < ev->num_bis; i++) {
+			u16 handle = le16_to_cpu(ev->bis[i]);
+
+			bis = hci_conn_hash_lookup_handle(hdev, handle);
+
+			set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
+			hci_connect_cfm(bis, ev->status);
+		}
+
 	hci_dev_unlock(hdev);
 }
 
@@ -7101,6 +7231,11 @@ static const struct hci_le_ev {
 	HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED,
 		  hci_le_pa_sync_estabilished_evt,
 		  sizeof(struct hci_ev_le_pa_sync_established)),
+	/* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */
+	HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT,
+				 hci_le_per_adv_report_evt,
+				 sizeof(struct hci_ev_le_per_adv_report),
+				 HCI_MAX_EVENT_SIZE),
 	/* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */
 	HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt,
 		  sizeof(struct hci_evt_le_ext_adv_set_term)),