Bluetooth: Add initial implementation of BIS connections

This adds initial support for BIS/BIG which includes:

== Broadcaster role: Setup a periodic advertising and create a BIG ==

> tools/isotest -s 00:00:00:00:00:00
isotest[63]: Connected [00:00:00:00:00:00]
isotest[63]: QoS BIG 0x00 BIS 0x00 Packing 0x00 Framing 0x00]
isotest[63]: Output QoS [Interval 10000 us Latency 10 ms SDU 40 PHY 0x02
RTN 2]
isotest[63]: Sending ...
isotest[63]: Number of packets: 1
isotest[63]: Socket jitter buffer: 80 buffer
< HCI Command: LE Set Perio.. (0x08|0x003e) plen 7
...
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Periodic Advertising Parameters (0x08|0x003e) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Perio.. (0x08|0x003f) plen 7
...
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Periodic Advertising Data (0x08|0x003f) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Perio.. (0x08|0x0040) plen 2
...
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Periodic Advertising Enable (0x08|0x0040) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Create B.. (0x08|0x0068) plen 31
...
> HCI Event: Command Status (0x0f) plen 4
      LE Create Broadcast Isochronous Group (0x08|0x0068) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 21
      LE Broadcast Isochronous Group Complete (0x1b)
      ...

== Broadcast Receiver role: Create a PA Sync and BIG Sync ==

> tools/isotest -i hci1 -d 00:AA:01:00:00:00
isotest[66]: Waiting for connection 00:AA:01:00:00:00...
< HCI Command: LE Periodic Advert.. (0x08|0x0044) plen 14
...
> HCI Event: Command Status (0x0f) plen 4
      LE Periodic Advertising Create Sync (0x08|0x0044) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Extended Sca.. (0x08|0x0041) plen 8
...
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Extended Scan Parameters (0x08|0x0041) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Extended Sca.. (0x08|0x0042) plen 6
...
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Extended Scan Enable (0x08|0x0042) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 29
      LE Extended Advertising Report (0x0d)
      ...
> HCI Event: LE Meta Event (0x3e) plen 16
      LE Periodic Advertising Sync Established (0x0e)
      ...
< HCI Command: LE Broadcast Isoch.. (0x08|0x006b) plen 25
...
> HCI Event: Command Status (0x0f) plen 4
      LE Broadcast Isochronous Group Create Sync (0x08|0x006b) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 17
      LE Broadcast Isochronous Group Sync Estabilished (0x1d)
      ...

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

1 files changed, 21 insertions, 15 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index d93189f17193..e64d558e5d69 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -827,7 +827,6 @@ void __hci_req_disable_advertising(struct hci_request *req)
 {
 	if (ext_adv_capable(req->hdev)) {
 		__hci_req_disable_ext_adv_instance(req, 0x00);
-
 	} else {
 		u8 enable = 0x00;
 
@@ -1338,15 +1337,15 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 	bdaddr_t random_addr;
 	u8 own_addr_type;
 	int err;
-	struct adv_info *adv_instance;
-	bool secondary_adv;
+	struct adv_info *adv;
+	bool secondary_adv, require_privacy;
 
 	if (instance > 0) {
-		adv_instance = hci_find_adv_instance(hdev, instance);
-		if (!adv_instance)
+		adv = hci_find_adv_instance(hdev, instance);
+		if (!adv)
 			return -EINVAL;
 	} else {
-		adv_instance = NULL;
+		adv = NULL;
 	}
 
 	flags = hci_adv_instance_flags(hdev, instance);
@@ -1364,18 +1363,24 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 	 * advertising is used. In that case it is fine to use a
 	 * non-resolvable private address.
 	 */
-	err = hci_get_random_address(hdev, !connectable,
-				     adv_use_rpa(hdev, flags), adv_instance,
+	require_privacy = !connectable;
+
+	/* Don't require privacy for periodic adv? */
+	if (adv && adv->periodic)
+		require_privacy = false;
+
+	err = hci_get_random_address(hdev, require_privacy,
+				     adv_use_rpa(hdev, flags), adv,
 				     &own_addr_type, &random_addr);
 	if (err < 0)
 		return err;
 
 	memset(&cp, 0, sizeof(cp));
 
-	if (adv_instance) {
-		hci_cpu_to_le24(adv_instance->min_interval, cp.min_interval);
-		hci_cpu_to_le24(adv_instance->max_interval, cp.max_interval);
-		cp.tx_power = adv_instance->tx_power;
+	if (adv) {
+		hci_cpu_to_le24(adv->min_interval, cp.min_interval);
+		hci_cpu_to_le24(adv->max_interval, cp.max_interval);
+		cp.tx_power = adv->tx_power;
 	} else {
 		hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
 		hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
@@ -1396,7 +1401,8 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 		else
 			cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_SCAN_IND);
 	} else {
-		if (secondary_adv)
+		/* Secondary and periodic cannot use legacy PDUs */
+		if (secondary_adv || (adv && adv->periodic))
 			cp.evt_properties = cpu_to_le16(LE_EXT_ADV_NON_CONN_IND);
 		else
 			cp.evt_properties = cpu_to_le16(LE_LEGACY_NONCONN_IND);
@@ -1426,8 +1432,8 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 		struct hci_cp_le_set_adv_set_rand_addr cp;
 
 		/* Check if random address need to be updated */
-		if (adv_instance) {
-			if (!bacmp(&random_addr, &adv_instance->random_addr))
+		if (adv) {
+			if (!bacmp(&random_addr, &adv->random_addr))
 				return 0;
 		} else {
 			if (!bacmp(&random_addr, &hdev->random_addr))