From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [RFC 2/3] Bluetooth: Add BT_PHYS socket option
Date: Thu, 2 Jan 2020 15:00:56 -0800 [thread overview]
Message-ID: <20200102230057.31326-2-luiz.dentz@gmail.com> (raw)
In-Reply-To: <20200102230057.31326-1-luiz.dentz@gmail.com>
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This adds BT_PHYS socket option which can be used to read the PHYs in
use by the underline connection.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
include/net/bluetooth/bluetooth.h | 17 ++++++++
include/net/bluetooth/hci_core.h | 2 +
net/bluetooth/hci_conn.c | 64 +++++++++++++++++++++++++++++++
net/bluetooth/l2cap_sock.c | 13 +++++++
net/bluetooth/sco.c | 13 +++++++
5 files changed, 109 insertions(+)
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index e42bb8e03c09..69c0e7eb26d9 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -121,6 +121,23 @@ struct bt_voice {
#define BT_SNDMTU 12
#define BT_RCVMTU 13
+#define BT_PHYS 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, ...);
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index faebe3859931..03cf3f0f22b9 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1467,6 +1467,8 @@ 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_phys(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,
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 87691404d0c6..386e6b0bd2ab 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1725,3 +1725,67 @@ struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle)
return hchan;
}
+
+u32 hci_conn_get_phys(struct hci_conn *conn)
+{
+ u32 phys = 0;
+
+ hci_dev_lock(conn->hdev);
+
+ switch (conn->type) {
+ case ACL_LINK:
+ case SCO_LINK:
+ 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;
+
+ 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;
+
+ 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 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;
+}
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index a7be8b59b3c2..fb011c6c67be 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -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_PHYS:
+ if (sk->sk_state == BT_CONNECTED) {
+ err = -EINVAL;
+ break;
+ }
+
+ phys = hci_conn_get_phys(chan->conn->hcon);
+
+ if (put_user(phys, (u32 __user *) optval))
+ err = -EFAULT;
+ break;
+
default:
err = -ENOPROTOOPT;
break;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index b91d6b440fdf..dcd297f2acc6 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -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_PHYS:
+ if (sk->sk_state == BT_CONNECTED) {
+ err = -EINVAL;
+ break;
+ }
+
+ phys = hci_conn_get_phys(sco_pi(sk)->conn->hcon);
+
+ if (put_user(phys, (u32 __user *) optval))
+ err = -EFAULT;
+ break;
+
default:
err = -ENOPROTOOPT;
break;
--
2.21.0
next prev parent reply other threads:[~2020-01-02 23:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-02 23:00 [RFC 1/3] Bluetooth: HCI: Add support for LE PHY Update Complete event Luiz Augusto von Dentz
2020-01-02 23:00 ` Luiz Augusto von Dentz [this message]
2020-01-04 9:55 ` [RFC 2/3] Bluetooth: Add BT_PHYS socket option Marcel Holtmann
2020-01-07 22:04 ` Luiz Augusto von Dentz
2020-01-08 20:52 ` Marcel Holtmann
2020-01-08 21:08 ` Luiz Augusto von Dentz
2020-01-02 23:00 ` [RFC 3/3] Bluetooth: Auto tune if input MTU is set to 0 Luiz Augusto von Dentz
2020-01-04 9:52 ` Marcel Holtmann
2020-01-04 9:50 ` [RFC 1/3] Bluetooth: HCI: Add support for LE PHY Update Complete event Marcel Holtmann
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