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Date:   Wed, 13 May 2020 10:04:21 +0200
From:   Marcel Holtmann <>
To:     Archie Pusaka <>
Cc:     linux-bluetooth <>,
        Luiz Augusto von Dentz <>,
        Archie Pusaka <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Johan Hedberg <>,,
Subject: Re: [PATCH v1] Bluetooth: L2CAP: add support for waiting
 disconnection resp

Hi Archie,

> Whenever we disconnect a L2CAP connection, we would immediately
> report a disconnection event (EPOLLHUP) to the upper layer, without
> waiting for the response of the other device.
> This patch offers an option to wait until we receive a disconnection
> response before reporting disconnection event, by using the "how"
> parameter in l2cap_sock_shutdown(). Therefore, upper layer can opt
> to wait for disconnection response by shutdown(sock, SHUT_WR).
> This can be used to enforce proper disconnection order in HID,
> where the disconnection of the interrupt channel must be complete
> before attempting to disconnect the control channel.
> Signed-off-by: Archie Pusaka <>
> ---
> net/bluetooth/l2cap_sock.c | 30 +++++++++++++++++++++++-------
> 1 file changed, 23 insertions(+), 7 deletions(-)

patch has been applied to bluetooth-next tree.



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