Commit eab2404b authored by Luiz Augusto von Dentz's avatar Luiz Augusto von Dentz Committed by Marcel Holtmann
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Bluetooth: Add BT_PHY socket option 



This adds BT_PHY socket option (read-only) which can be used to read
the PHYs in use by the underline connection.

Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent cee5f20f

include/net/bluetooth/bluetooth.h

+17 −0
Original line number Diff line number Diff line
@@ -121,6 +121,23 @@ struct bt_voice { 


#define BT_SNDMTU		12

#define BT_RCVMTU		13

#define BT_PHY			14



#define BT_PHY_BR_1M_1SLOT	0x00000001

#define BT_PHY_BR_1M_3SLOT	0x00000002

#define BT_PHY_BR_1M_5SLOT	0x00000004

#define BT_PHY_EDR_2M_1SLOT	0x00000008

#define BT_PHY_EDR_2M_3SLOT	0x00000010

#define BT_PHY_EDR_2M_5SLOT	0x00000020

#define BT_PHY_EDR_3M_1SLOT	0x00000040

#define BT_PHY_EDR_3M_3SLOT	0x00000080

#define BT_PHY_EDR_3M_5SLOT	0x00000100

#define BT_PHY_LE_1M_TX		0x00000200

#define BT_PHY_LE_1M_RX		0x00000400

#define BT_PHY_LE_2M_TX		0x00000800

#define BT_PHY_LE_2M_RX		0x00001000

#define BT_PHY_LE_CODED_TX	0x00002000

#define BT_PHY_LE_CODED_RX	0x00004000



__printf(1, 2)

void bt_info(const char *fmt, ...);

include/net/bluetooth/hci_core.h

+2 −0
Original line number Diff line number Diff line
@@ -1477,6 +1477,8 @@ void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 
struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,

			     const void *param, u32 timeout);



u32 hci_conn_get_phy(struct hci_conn *conn);



/* ----- HCI Sockets ----- */

void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);

void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,

net/bluetooth/hci_conn.c

+107 −0
Original line number Diff line number Diff line
@@ -1725,3 +1725,110 @@ struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) 


	return hchan;

}



u32 hci_conn_get_phy(struct hci_conn *conn)

{

	u32 phys = 0;



	hci_dev_lock(conn->hdev);



	/* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 2, Part B page 471:

	 * Table 6.2: Packets defined for synchronous, asynchronous, and

	 * CSB logical transport types.

	 */

	switch (conn->type) {

	case SCO_LINK:

		/* SCO logical transport (1 Mb/s):

		 * HV1, HV2, HV3 and DV.

		 */

		phys |= BT_PHY_BR_1M_1SLOT;



		break;



	case ACL_LINK:

		/* ACL logical transport (1 Mb/s) ptt=0:

		 * DH1, DM3, DH3, DM5 and DH5.

		 */

		phys |= BT_PHY_BR_1M_1SLOT;



		if (conn->pkt_type & (HCI_DM3 | HCI_DH3))

			phys |= BT_PHY_BR_1M_3SLOT;



		if (conn->pkt_type & (HCI_DM5 | HCI_DH5))

			phys |= BT_PHY_BR_1M_5SLOT;



		/* ACL logical transport (2 Mb/s) ptt=1:

		 * 2-DH1, 2-DH3 and 2-DH5.

		 */

		if (!(conn->pkt_type & HCI_2DH1))

			phys |= BT_PHY_EDR_2M_1SLOT;



		if (!(conn->pkt_type & HCI_2DH3))

			phys |= BT_PHY_EDR_2M_3SLOT;



		if (!(conn->pkt_type & HCI_2DH5))

			phys |= BT_PHY_EDR_2M_5SLOT;



		/* ACL logical transport (3 Mb/s) ptt=1:

		 * 3-DH1, 3-DH3 and 3-DH5.

		 */

		if (!(conn->pkt_type & HCI_3DH1))

			phys |= BT_PHY_EDR_3M_1SLOT;



		if (!(conn->pkt_type & HCI_3DH3))

			phys |= BT_PHY_EDR_3M_3SLOT;



		if (!(conn->pkt_type & HCI_3DH5))

			phys |= BT_PHY_EDR_3M_5SLOT;



		break;



	case ESCO_LINK:

		/* eSCO logical transport (1 Mb/s): EV3, EV4 and EV5 */

		phys |= BT_PHY_BR_1M_1SLOT;



		if (!(conn->pkt_type & (ESCO_EV4 | ESCO_EV5)))

			phys |= BT_PHY_BR_1M_3SLOT;



		/* eSCO logical transport (2 Mb/s): 2-EV3, 2-EV5 */

		if (!(conn->pkt_type & ESCO_2EV3))

			phys |= BT_PHY_EDR_2M_1SLOT;



		if (!(conn->pkt_type & ESCO_2EV5))

			phys |= BT_PHY_EDR_2M_3SLOT;



		/* eSCO logical transport (3 Mb/s): 3-EV3, 3-EV5 */

		if (!(conn->pkt_type & ESCO_3EV3))

			phys |= BT_PHY_EDR_3M_1SLOT;



		if (!(conn->pkt_type & ESCO_3EV5))

			phys |= BT_PHY_EDR_3M_3SLOT;



		break;



	case LE_LINK:

		if (conn->le_tx_phy & HCI_LE_SET_PHY_1M)

			phys |= BT_PHY_LE_1M_TX;



		if (conn->le_rx_phy & HCI_LE_SET_PHY_1M)

			phys |= BT_PHY_LE_1M_RX;



		if (conn->le_tx_phy & HCI_LE_SET_PHY_2M)

			phys |= BT_PHY_LE_2M_TX;



		if (conn->le_rx_phy & HCI_LE_SET_PHY_2M)

			phys |= BT_PHY_LE_2M_RX;



		if (conn->le_tx_phy & HCI_LE_SET_PHY_CODED)

			phys |= BT_PHY_LE_CODED_TX;



		if (conn->le_rx_phy & HCI_LE_SET_PHY_CODED)

			phys |= BT_PHY_LE_CODED_RX;



		break;

	}



	hci_dev_unlock(conn->hdev);



	return phys;

}

net/bluetooth/l2cap_sock.c

+13 −0
Original line number Diff line number Diff line
@@ -499,6 +499,7 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, 
	struct l2cap_chan *chan = l2cap_pi(sk)->chan;

	struct bt_security sec;

	struct bt_power pwr;

	u32 phys;

	int len, err = 0;



	BT_DBG("sk %p", sk);
@@ -603,6 +604,18 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, 
			err = -EFAULT;

		break;



	case BT_PHY:

		if (sk->sk_state == BT_CONNECTED) {

			err = -ENOTCONN;

			break;

		}



		phys = hci_conn_get_phy(chan->conn->hcon);



		if (put_user(phys, (u32 __user *) optval))

			err = -EFAULT;

		break;



	default:

		err = -ENOPROTOOPT;

		break;

net/bluetooth/sco.c

+13 −0
Original line number Diff line number Diff line
@@ -922,6 +922,7 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, 
	struct sock *sk = sock->sk;

	int len, err = 0;

	struct bt_voice voice;

	u32 phys;



	BT_DBG("sk %p", sk);
@@ -956,6 +957,18 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, 


		break;



	case BT_PHY:

		if (sk->sk_state == BT_CONNECTED) {

			err = -ENOTCONN;

			break;

		}



		phys = hci_conn_get_phy(sco_pi(sk)->conn->hcon);



		if (put_user(phys, (u32 __user *) optval))

			err = -EFAULT;

		break;



	default:

		err = -ENOPROTOOPT;

		break;

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