Return-Path: From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Dalleau?= To: linux-bluetooth@vger.kernel.org Cc: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Dalleau?= Subject: [PATCH 4/5] Bluetooth: Parameters for outgoing SCO connections Date: Thu, 17 Jan 2013 13:39:48 +0100 Message-Id: <1358426389-25903-5-git-send-email-frederic.dalleau@linux.intel.com> In-Reply-To: <1358426389-25903-1-git-send-email-frederic.dalleau@linux.intel.com> References: <1358426389-25903-1-git-send-email-frederic.dalleau@linux.intel.com> Content-Type: text/plain; charset="utf-8" Sender: linux-bluetooth-owner@vger.kernel.org List-ID: In order to establish a transparent SCO connection, the correct settings must be specified in the SetupSynchronousConnection request. For that, a bit is set in ACL connection flags to set up the desired parameters. If this bit is not set, a legacy SCO connection will be requested. This patch uses T2 settings. --- include/net/bluetooth/hci_core.h | 3 +++ net/bluetooth/hci_conn.c | 27 ++++++++++++++++++++------- net/bluetooth/sco.c | 4 ++-- 3 files changed, 25 insertions(+), 9 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index cb5d131..9ef7fe0 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -438,6 +438,7 @@ enum { HCI_CONN_SSP_ENABLED, HCI_CONN_POWER_SAVE, HCI_CONN_REMOTE_OOB, + HCI_CONN_SCO_TRANSPARENT, }; static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) @@ -586,6 +587,8 @@ struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 dst_type, __u8 sec_level, __u8 auth_type); +struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, + u8 sec_level, u8 auth_type, u8 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); diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 25bfce0..e3f1fad 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -175,13 +175,22 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle) conn->attempt++; cp.handle = cpu_to_le16(handle); - cp.pkt_type = cpu_to_le16(conn->pkt_type); cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); - cp.max_latency = __constant_cpu_to_le16(0xffff); - cp.voice_setting = cpu_to_le16(hdev->voice_setting); - cp.retrans_effort = 0xff; + + if (test_and_clear_bit(HCI_CONN_SCO_TRANSPARENT, &conn->flags)) { + cp.pkt_type = __constant_cpu_to_le16(EDR_ESCO_MASK & + ~ESCO_2EV3); + cp.max_latency = __constant_cpu_to_le16(0x000d); + cp.voice_setting = __constant_cpu_to_le16(0x0003); + cp.retrans_effort = 0x02; + } else { + cp.pkt_type = cpu_to_le16(conn->pkt_type); + cp.max_latency = __constant_cpu_to_le16(0xffff); + cp.voice_setting = cpu_to_le16(hdev->voice_setting); + cp.retrans_effort = 0xff; + } hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); } @@ -551,8 +560,9 @@ static struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, return acl; } -static struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, - bdaddr_t *dst, u8 sec_level, u8 auth_type) +struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, + bdaddr_t *dst, u8 sec_level, + u8 auth_type, u8 codec) { struct hci_conn *acl; struct hci_conn *sco; @@ -575,6 +585,9 @@ static struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, hci_conn_hold(sco); + if (codec) + set_bit(HCI_CONN_SCO_TRANSPARENT, &sco->flags); + if (acl->state == BT_CONNECTED && (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { set_bit(HCI_CONN_POWER_SAVE, &acl->flags); @@ -605,7 +618,7 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, return hci_connect_acl(hdev, dst, sec_level, auth_type); case SCO_LINK: case ESCO_LINK: - return hci_connect_sco(hdev, type, dst, sec_level, auth_type); + return hci_connect_sco(hdev, type, dst, sec_level, auth_type, 0); } return ERR_PTR(-EINVAL); diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 6a957a3..bee0b5c 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -176,8 +176,8 @@ static int sco_connect(struct sock *sk) else type = SCO_LINK; - hcon = hci_connect(hdev, type, dst, BDADDR_BREDR, BT_SECURITY_LOW, - HCI_AT_NO_BONDING); + hcon = hci_connect_sco(hdev, type, dst, BT_SECURITY_LOW, + HCI_AT_NO_BONDING, sco_pi(sk)->mode); if (IS_ERR(hcon)) { err = PTR_ERR(hcon); goto done; -- 1.7.9.5