On Friday 14 August 2020 12:56:05 Luiz Augusto von Dentz wrote:
> Hi Joseph,
>
> On Thu, Aug 13, 2020 at 1:42 AM Joseph Hwang <josephsih@xxxxxxxxxxxx> wrote:
> >
> > It is desirable to expose the wideband speech packet length via
> > a socket option to the user space so that the user space can set
> > the value correctly in configuring the sco connection.
> >
> > Reviewed-by: Alain Michaud <alainm@xxxxxxxxxxxx>
> > Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
> > Signed-off-by: Joseph Hwang <josephsih@xxxxxxxxxxxx>
> > ---
> >
> > include/net/bluetooth/bluetooth.h | 2 ++
> > net/bluetooth/sco.c | 8 ++++++++
> > 2 files changed, 10 insertions(+)
> >
> > diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
> > index 9125effbf4483d..922cc03143def4 100644
> > --- a/include/net/bluetooth/bluetooth.h
> > +++ b/include/net/bluetooth/bluetooth.h
> > @@ -153,6 +153,8 @@ struct bt_voice {
> >
> > #define BT_SCM_PKT_STATUS 0x03
> >
> > +#define BT_SCO_PKT_LEN 17
> > +
> > __printf(1, 2)
> > void bt_info(const char *fmt, ...);
> > __printf(1, 2)
> > diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
> > index dcf7f96ff417e6..97e4e7c7b8cf62 100644
> > --- a/net/bluetooth/sco.c
> > +++ b/net/bluetooth/sco.c
> > @@ -67,6 +67,7 @@ struct sco_pinfo {
> > __u32 flags;
> > __u16 setting;
> > __u8 cmsg_mask;
> > + __u32 pkt_len;
> > struct sco_conn *conn;
> > };
> >
> > @@ -267,6 +268,8 @@ static int sco_connect(struct sock *sk)
> > sco_sock_set_timer(sk, sk->sk_sndtimeo);
> > }
> >
> > + sco_pi(sk)->pkt_len = hdev->sco_pkt_len;
> > +
> > done:
> > hci_dev_unlock(hdev);
> > hci_dev_put(hdev);
> > @@ -1001,6 +1004,11 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
> > err = -EFAULT;
> > break;
> >
> > + case BT_SCO_PKT_LEN:
> > + if (put_user(sco_pi(sk)->pkt_len, (u32 __user *)optval))
> > + err = -EFAULT;
> > + break;
>
> Couldn't we expose this via BT_SNDMTU/BT_RCVMTU?
Hello!
There is already SCO_OPTIONS sock option, uses struct sco_options and
contains 'mtu' member.
I think that instead of adding new sock option, existing SCO_OPTIONS
option should be used.
> > default:
> > err = -ENOPROTOOPT;
> > break;
> > --
> > 2.28.0.236.gb10cc79966-goog
> >
>
>
> --
> Luiz Augusto von Dentz
