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From:   Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Subject: [BlueZ PATCH v8 1/8] lib: Add definitions for ISO socket
Date:   Thu, 30 Jun 2022 15:14:45 -0700
Message-Id: <20220630221452.638591-1-luiz.dentz@gmail.com>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

---
v2: Fix CI findings.
v3: Add patch fixing mgmt-tester Read EXP Features tests.
v4: Rebase and add flag EXP_FEAT_ISO_SOCKET
v5: Add BT_DEFER_SETUP tests to iso-tester
v6: Make iso-tester disable ISO Socket experimental UUID after each test
v7: Fix scan-build findings
v8: Add tests Defer and Defer send which use DEFER_SETUP when connecting which
emulates the QoS state of BAP where a SetCIGParameter shall be used without
CreateCIS which is left to just Enabling state.

 Makefile.am     |  2 +-
 lib/bluetooth.h | 38 +++++++++++++++++++++++++++++++++++++-
 lib/iso.h       | 42 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+), 2 deletions(-)
 create mode 100644 lib/iso.h

diff --git a/Makefile.am b/Makefile.am
index 0074ea3ac..cead4b8c6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -69,7 +69,7 @@ lib_headers = lib/bluetooth.h lib/hci.h lib/hci_lib.h \
 		lib/sco.h lib/l2cap.h lib/sdp.h lib/sdp_lib.h \
 		lib/rfcomm.h lib/bnep.h lib/cmtp.h lib/hidp.h
 
-extra_headers = lib/mgmt.h lib/uuid.h lib/a2mp.h lib/amp.h
+extra_headers = lib/mgmt.h lib/uuid.h lib/a2mp.h lib/amp.h lib/iso.h
 extra_sources = lib/uuid.c
 
 local_headers = $(foreach file,$(lib_headers), lib/bluetooth/$(notdir $(file)))
diff --git a/lib/bluetooth.h b/lib/bluetooth.h
index e6171cef0..af5fbcfbc 100644
--- a/lib/bluetooth.h
+++ b/lib/bluetooth.h
@@ -37,6 +37,7 @@ extern "C" {
 #define BTPROTO_CMTP	5
 #define BTPROTO_HIDP	6
 #define BTPROTO_AVDTP	7
+#define BTPROTO_ISO	8
 
 #define SOL_HCI		0
 #define SOL_L2CAP	6
@@ -140,7 +141,39 @@ struct bt_voice {
 
 #define BT_SCM_PKT_STATUS	0x03
 
-#define BT_CODEC 19
+#define BT_ISO_QOS		17
+
+#define BT_ISO_QOS_CIG_UNSET	0xff
+#define BT_ISO_QOS_CIS_UNSET	0xff
+
+struct bt_iso_io_qos {
+	uint32_t interval;
+	uint16_t latency;
+	uint16_t sdu;
+	uint8_t  phy;
+	uint8_t  rtn;
+};
+
+struct bt_iso_qos {
+	union {
+		uint8_t  cig;
+		uint8_t  big;
+	};
+	union {
+		uint8_t  cis;
+		uint8_t  bis;
+	};
+	union {
+		uint8_t  sca;
+		uint8_t  sync_interval;
+	};
+	uint8_t  packing;
+	uint8_t  framing;
+	struct bt_iso_io_qos in;
+	struct bt_iso_io_qos out;
+};
+
+#define BT_CODEC		19
 struct bt_codec {
 	uint8_t id;
 	uint16_t cid;
@@ -158,6 +191,7 @@ struct bt_codecs {
 	struct bt_codec codecs[];
 } __attribute__((packed));
 
+
 /* Connection and socket states */
 enum {
 	BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
@@ -171,6 +205,8 @@ enum {
 	BT_CLOSED
 };
 
+#define BT_ISO_BASE		20
+
 /* Byte order conversions */
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #define htobs(d)  (d)
diff --git a/lib/iso.h b/lib/iso.h
new file mode 100644
index 000000000..1e9f79ce5
--- /dev/null
+++ b/lib/iso.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2022  Intel Corporation.
+ *
+ */
+
+#ifndef __ISO_H
+#define __ISO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ISO defaults */
+#define ISO_DEFAULT_MTU		251
+#define ISO_MAX_NUM_BIS		0x1f
+
+/* ISO socket broadcast address */
+struct sockaddr_iso_bc {
+	bdaddr_t	bc_bdaddr;
+	uint8_t		bc_bdaddr_type;
+	uint8_t		bc_sid;
+	uint8_t		bc_num_bis;
+	uint8_t		bc_bis[ISO_MAX_NUM_BIS];
+};
+
+/* ISO socket address */
+struct sockaddr_iso {
+	sa_family_t	iso_family;
+	bdaddr_t	iso_bdaddr;
+	uint8_t		iso_bdaddr_type;
+	struct sockaddr_iso_bc iso_bc[];
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ISO_H */
-- 
2.35.3