2024-03-14 18:23:31

by Pauli Virtanen

[permalink] [raw]
Subject: [PATCH v2 4/5] Bluetooth: SCO: add TX timestamping

Support TX timestamping in SCO sockets.

Support MSG_ERRQUEUE in SCO recvmsg.

Signed-off-by: Pauli Virtanen <[email protected]>
---
net/bluetooth/sco.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 43daf965a01e..b3c2af7c7d67 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -305,7 +305,8 @@ static int sco_connect(struct sock *sk)
return err;
}

-static int sco_send_frame(struct sock *sk, struct sk_buff *skb)
+static int sco_send_frame(struct sock *sk, struct sk_buff *skb,
+ const struct sockcm_cookie *sockc)
{
struct sco_conn *conn = sco_pi(sk)->conn;
int len = skb->len;
@@ -316,6 +317,7 @@ static int sco_send_frame(struct sock *sk, struct sk_buff *skb)

BT_DBG("sk %p len %d", sk, len);

+ hci_tx_timestamp(skb, sockc);
hci_send_sco(conn->hcon, skb);

return len;
@@ -720,6 +722,7 @@ static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
{
struct sock *sk = sock->sk;
struct sk_buff *skb;
+ struct sockcm_cookie sockc;
int err;

BT_DBG("sock %p, sk %p", sock, sk);
@@ -731,6 +734,14 @@ static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;

+ sockcm_init(&sockc, sk);
+
+ if (msg->msg_controllen) {
+ err = sock_cmsg_send(sk, msg, &sockc);
+ if (err)
+ return err;
+ }
+
skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0);
if (IS_ERR(skb))
return PTR_ERR(skb);
@@ -738,7 +749,7 @@ static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
lock_sock(sk);

if (sk->sk_state == BT_CONNECTED)
- err = sco_send_frame(sk, skb);
+ err = sco_send_frame(sk, skb, &sockc);
else
err = -ENOTCONN;

@@ -804,6 +815,10 @@ static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
struct sock *sk = sock->sk;
struct sco_pinfo *pi = sco_pi(sk);

+ if (unlikely(flags & MSG_ERRQUEUE))
+ return sock_recv_errqueue(sk, msg, len, SOL_BLUETOOTH,
+ BT_SCM_ERROR);
+
lock_sock(sk);

if (sk->sk_state == BT_CONNECT2 &&
--
2.44.0