diff options
| author | Pauli Virtanen <[email protected]> | 2025-03-18 19:06:45 +0000 |
|---|---|---|
| committer | Luiz Augusto von Dentz <[email protected]> | 2025-03-25 16:50:35 +0000 |
| commit | 11770f41b8a7e1207576e944ec1c98b74fac89a5 (patch) | |
| tree | dd3214d5c76fcf421f1c212f1d912c47d20a4ba4 /net/bluetooth/l2cap_sock.c | |
| parent | Bluetooth: ISO: add TX timestamping (diff) | |
| download | kernel-11770f41b8a7e1207576e944ec1c98b74fac89a5.tar.gz kernel-11770f41b8a7e1207576e944ec1c98b74fac89a5.zip | |
Bluetooth: L2CAP: add TX timestamping
Support TX timestamping in L2CAP sockets.
Support MSG_ERRQUEUE recvmsg.
For other than SOCK_STREAM L2CAP sockets, if a packet from sendmsg() is
fragmented, only the first ACL fragment is timestamped.
For SOCK_STREAM L2CAP sockets, use the bytestream convention and
timestamp the last fragment and count bytes in tskey.
Timestamps are not generated in the Enhanced Retransmission mode, as
meaning of COMPLETION stamp is unclear if L2CAP layer retransmits.
Signed-off-by: Pauli Virtanen <[email protected]>
Reviewed-by: Willem de Bruijn <[email protected]>
Signed-off-by: Luiz Augusto von Dentz <[email protected]>
Diffstat (limited to 'net/bluetooth/l2cap_sock.c')
| -rw-r--r-- | net/bluetooth/l2cap_sock.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index acd11b268b98..5aa55fa69594 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1106,6 +1106,7 @@ static int l2cap_sock_sendmsg(struct socket *sock, struct msghdr *msg, { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; + struct sockcm_cookie sockc; int err; BT_DBG("sock %p, sk %p", sock, sk); @@ -1120,6 +1121,14 @@ static int l2cap_sock_sendmsg(struct socket *sock, struct msghdr *msg, if (sk->sk_state != BT_CONNECTED) return -ENOTCONN; + hci_sockcm_init(&sockc, sk); + + if (msg->msg_controllen) { + err = sock_cmsg_send(sk, msg, &sockc); + if (err) + return err; + } + lock_sock(sk); err = bt_sock_wait_ready(sk, msg->msg_flags); release_sock(sk); @@ -1127,7 +1136,7 @@ static int l2cap_sock_sendmsg(struct socket *sock, struct msghdr *msg, return err; l2cap_chan_lock(chan); - err = l2cap_chan_send(chan, msg, len); + err = l2cap_chan_send(chan, msg, len, &sockc); l2cap_chan_unlock(chan); return err; @@ -1168,6 +1177,10 @@ static int l2cap_sock_recvmsg(struct socket *sock, struct msghdr *msg, struct l2cap_pinfo *pi = l2cap_pi(sk); int err; + 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 && test_bit(BT_SK_DEFER_SETUP, |