< HCI Command: Enhanced Setup Synchronous Connection (0x01|0x003d) plen 59
Handle: 256
Transmit bandwidth: 8000
Receive bandwidth: 8000
Max latency: 13
Packet type: 0x0380
3-EV3 may not be used
2-EV5 may not be used
3-EV5 may not be used
Retransmission effort: Optimize for link quality (0x02)
> HCI Event: Command Status (0x0f) plen 4
Enhanced Setup Synchronous Connection (0x01|0x003d) ncmd 1
Status: Success (0x00)
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
Status: Success (0x00)
Handle: 257
Address: CC:98:8B:92:04:FD (SONY Visual Products Inc.)
Link type: eSCO (0x02)
Transmission interval: 0x0c
Retransmission window: 0x06
RX packet length: 60
TX packet length: 60
Air mode: Transparent (0x03)
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@xxxxxxxxx>
---
* changes in v9:
- Fix review comments, use bt_dev_dbg instead of BT_DBG
include/net/bluetooth/bluetooth.h | 3 +-
include/net/bluetooth/hci.h | 34 ++++++++++
include/net/bluetooth/hci_core.h | 7 +-
net/bluetooth/hci_conn.c | 107 ++++++++++++++++++++++++++++--
net/bluetooth/hci_event.c | 48 +++++++++++++-
net/bluetooth/sco.c | 11 ++-
6 files changed, 201 insertions(+), 9 deletions(-)
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 0e8802d09068..af2809121571 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -173,7 +173,8 @@ struct bt_codecs {
struct bt_codec codecs[];
} __packed;
-#define CODING_FORMAT_CVSD 0x02
+#define CODING_FORMAT_CVSD 0x02
+#define CODING_FORMAT_TRANSPARENT 0x03
__printf(1, 2)
void bt_info(const char *fmt, ...);
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 42963188dcea..03241c15b5fb 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -871,6 +871,40 @@ struct hci_cp_logical_link_cancel {
__u8 flow_spec_id;
} __packed;
+#define HCI_OP_ENHANCED_SETUP_SYNC_CONN 0x043D
+struct hci_coding_format {
+ __u8 id;
+ __le16 cid;
+ __le16 vid;
+} __packed;
+
+struct hci_cp_enhanced_setup_sync_conn {
+ __le16 handle;
+ __le32 tx_bandwidth;
+ __le32 rx_bandwidth;
+ struct hci_coding_format tx_coding_format;
+ struct hci_coding_format rx_coding_format;
+ __le16 tx_codec_frame_size;
+ __le16 rx_codec_frame_size;
+ __le32 in_bandwidth;
+ __le32 out_bandwidth;
+ struct hci_coding_format in_coding_format;
+ struct hci_coding_format out_coding_format;
+ __le16 in_coded_data_size;
+ __le16 out_coded_data_size;
+ __u8 in_pcm_data_format;
+ __u8 out_pcm_data_format;
+ __u8 in_pcm_sample_payload_msb_pos;
+ __u8 out_pcm_sample_payload_msb_pos;
+ __u8 in_data_path;
+ __u8 out_data_path;
+ __u8 in_trasnport_unit_size;
+ __u8 out_trasnport_unit_size;
+ __le16 max_latency;
+ __le16 pkt_type;
+ __u8 retrans_effort;
+} __packed;
+
struct hci_rp_logical_link_cancel {
__u8 status;
__u8 phy_handle;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index ad0024891447..4c2514135a5d 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -712,6 +712,7 @@ struct hci_conn {
struct amp_mgr *amp_mgr;
struct hci_conn *link;
+ struct bt_codec codec;
void (*connect_cfm_cb) (struct hci_conn *conn, u8 status);
void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
@@ -1094,6 +1095,7 @@ static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
int hci_disconnect(struct hci_conn *conn, __u8 reason);
bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
+bool hci_enhanced_setup_sync(struct hci_conn *conn, __u16 handle);
void hci_sco_setup(struct hci_conn *conn, __u8 status);
struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
@@ -1118,7 +1120,7 @@ struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
u8 sec_level, u8 auth_type,
enum conn_reasons conn_reason);
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
- __u16 setting);
+ __u16 setting, struct bt_codec *codec);
int hci_conn_check_link_mode(struct hci_conn *conn);
int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
@@ -1439,6 +1441,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
/* Use LL Privacy based address resolution if supported */
#define use_ll_privacy(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
+/* Use enhanced synchronous connection if command is supported */
+#define use_enhanced_sco_conn(dev) ((dev)->commands[29] & 0x08)
+
/* Use ext scanning if set ext scan param and ext scan enable is supported */
#define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
((dev)->commands[37] & 0x40))
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 2b5059a56cda..9569b21adb88 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -307,6 +307,97 @@ static bool find_next_esco_param(struct hci_conn *conn,
return conn->attempt <= size;
}
+bool hci_enhanced_setup_sync(struct hci_conn *conn, __u16 handle)
+{
+ struct hci_dev *hdev = conn->hdev;
+ struct hci_cp_enhanced_setup_sync_conn cp;
+ const struct sco_param *param;
+
+ bt_dev_dbg(hdev, "hcon %p", conn);
+
+ conn->state = BT_CONNECT;
+ conn->out = true;
+
+ conn->attempt++;
+
+ memset(&cp, 0x00, sizeof(cp));
+
+ cp.handle = cpu_to_le16(handle);
+
+ cp.tx_bandwidth = cpu_to_le32(0x00001f40);
+ cp.rx_bandwidth = cpu_to_le32(0x00001f40);
+
+ switch (conn->codec.id) {
+ case CODING_FORMAT_TRANSPARENT:
+ if (!find_next_esco_param(conn, esco_param_msbc,
+ ARRAY_SIZE(esco_param_msbc)))
+ return false;
+ param = &esco_param_msbc[conn->attempt - 1];
+ cp.tx_coding_format.id = 0x03;
+ cp.rx_coding_format.id = 0x03;
+ cp.tx_codec_frame_size = __cpu_to_le16(60);
+ cp.rx_codec_frame_size = __cpu_to_le16(60);
+ cp.in_bandwidth = __cpu_to_le32(0x1f40);
+ cp.out_bandwidth = __cpu_to_le32(0x1f40);
+ cp.in_coding_format.id = 0x03;
+ cp.out_coding_format.id = 0x03;
+ cp.in_coded_data_size = __cpu_to_le16(16);
+ cp.out_coded_data_size = __cpu_to_le16(16);
+ cp.in_pcm_data_format = 2;
+ cp.out_pcm_data_format = 2;
+ cp.in_pcm_sample_payload_msb_pos = 0;
+ cp.out_pcm_sample_payload_msb_pos = 0;
+ cp.in_data_path = conn->codec.data_path;
+ cp.out_data_path = conn->codec.data_path;
+ cp.in_trasnport_unit_size = 1;
+ cp.out_trasnport_unit_size = 1;
+ break;
+
+ case CODING_FORMAT_CVSD:
+ if (lmp_esco_capable(conn->link)) {
+ if (!find_next_esco_param(conn, esco_param_cvsd,
+ ARRAY_SIZE(esco_param_cvsd)))
+ return false;
+ param = &esco_param_cvsd[conn->attempt - 1];
+ } else {
+ if (conn->attempt > ARRAY_SIZE(sco_param_cvsd))
+ return false;
+ param = &sco_param_cvsd[conn->attempt - 1];
+ }
+ cp.tx_coding_format.id = 2;
+ cp.rx_coding_format.id = 2;
+ cp.tx_codec_frame_size = __cpu_to_le16(60);
+ cp.rx_codec_frame_size = __cpu_to_le16(60);
+ cp.in_bandwidth = __cpu_to_le32(16000);
+ cp.out_bandwidth = __cpu_to_le32(16000);
+ cp.in_coding_format.id = 4;
+ cp.out_coding_format.id = 4;
+ cp.in_coded_data_size = __cpu_to_le16(16);
+ cp.out_coded_data_size = __cpu_to_le16(16);
+ cp.in_pcm_data_format = 2;
+ cp.out_pcm_data_format = 2;
+ cp.in_pcm_sample_payload_msb_pos = 0;
+ cp.out_pcm_sample_payload_msb_pos = 0;
+ cp.in_data_path = conn->codec.data_path;
+ cp.out_data_path = conn->codec.data_path;
+ cp.in_trasnport_unit_size = 16;
+ cp.out_trasnport_unit_size = 16;
+ break;
+
+ default:
+ return false;
+ }
+
+ cp.retrans_effort = param->retrans_effort;
+ cp.pkt_type = __cpu_to_le16(param->pkt_type);
+ cp.max_latency = __cpu_to_le16(param->max_latency);
+
+ if (hci_send_cmd(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0)
+ return false;
+
+ return true;
+}
+
bool hci_setup_sync(struct hci_conn *conn, __u16 handle)
{
struct hci_dev *hdev = conn->hdev;
@@ -424,10 +515,14 @@ void hci_sco_setup(struct hci_conn *conn, __u8 status)
BT_DBG("hcon %p", conn);
if (!status) {
- if (lmp_esco_capable(conn->hdev))
- hci_setup_sync(sco, conn->handle);
- else
+ if (lmp_esco_capable(conn->hdev)) {
+ if (use_enhanced_sco_conn(conn->hdev))
+ hci_enhanced_setup_sync(sco, conn->handle);
+ else
+ hci_setup_sync(sco, conn->handle);
+ } else {
hci_add_sco(sco, conn->handle);
+ }
} else {
hci_connect_cfm(sco, status);
hci_conn_del(sco);
@@ -1319,7 +1414,7 @@ struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
}
struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
- __u16 setting)
+ __u16 setting, struct bt_codec *codec)
{
struct hci_conn *acl;
struct hci_conn *sco;
@@ -1344,6 +1439,10 @@ struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
hci_conn_hold(sco);
sco->setting = setting;
+ sco->codec.id = codec->id;
+ sco->codec.cid = codec->cid;
+ sco->codec.vid = codec->vid;
+ sco->codec.data_path = codec->data_path;
if (acl->state == BT_CONNECTED &&
(sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 98ec486743ba..29a769a1a5e7 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2236,6 +2236,41 @@ static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
hci_dev_unlock(hdev);
}
+static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status)
+{
+ struct hci_cp_enhanced_setup_sync_conn *cp;
+ struct hci_conn *acl, *sco;
+ __u16 handle;
+
+ bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+ if (!status)
+ return;
+
+ cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN);
+ if (!cp)
+ return;
+
+ handle = __le16_to_cpu(cp->handle);
+
+ bt_dev_dbg(hdev, "handle 0x%4.4x", handle);
+
+ hci_dev_lock(hdev);
+
+ acl = hci_conn_hash_lookup_handle(hdev, handle);
+ if (acl) {
+ sco = acl->link;
+ if (sco) {
+ sco->state = BT_CLOSED;
+
+ hci_connect_cfm(sco, status);
+ hci_conn_del(sco);
+ }
+ }
+
+ hci_dev_unlock(hdev);
+}
+
static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
{
struct hci_cp_sniff_mode *cp;
@@ -3715,6 +3750,10 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
hci_cs_setup_sync_conn(hdev, ev->status);
break;
+ case HCI_OP_ENHANCED_SETUP_SYNC_CONN:
+ hci_cs_enhanced_setup_sync_conn(hdev, ev->status);
+ break;
+
case HCI_OP_SNIFF_MODE:
hci_cs_sniff_mode(hdev, ev->status);
break;
@@ -4401,8 +4440,13 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
if (conn->out) {
conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
(hdev->esco_type & EDR_ESCO_MASK);
- if (hci_setup_sync(conn, conn->link->handle))
- goto unlock;
+ if (use_enhanced_sco_conn(hdev)) {
+ if (hci_enhanced_setup_sync(conn, conn->link->handle))
+ goto unlock;
+ } else {
+ if (hci_setup_sync(conn, conn->link->handle))
+ goto unlock;
+ }
}
fallthrough;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 5aa6808c1a22..f4eea0ae3af2 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -240,7 +240,7 @@ static int sco_connect(struct sock *sk)
}
hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
- sco_pi(sk)->setting);
+ sco_pi(sk)->setting, &sco_pi(sk)->codec);
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto done;
@@ -865,6 +865,15 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
}
sco_pi(sk)->setting = voice.setting;
+ hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src,
+ BDADDR_BREDR);
+ if (!hdev) {
+ err = -EBADFD;
+ break;
+ }
+ if (use_enhanced_sco_conn(hdev) &&
+ voice.setting == BT_VOICE_TRANSPARENT)
+ sco_pi(sk)->codec.id = CODING_FORMAT_TRANSPARENT;
break;
case BT_PKT_STATUS:
--
2.17.1
