Hi Mat,
* Mat Martineau <mathewm@xxxxxxxxxxxxxx> [2011-10-13 15:00:47 -0700]:
> AMP channels can be moved between BR/EDR and AMP controllers using a
> sequence of signals. Every attempted channel move involves a series of
> four signals:
>
> Move Initiator Move Responder
> | |
> | Move Channel Request |
> | ----------------------------> |
> | |
> | Move Channel Response |
> | <---------------------------- |
> | |
> | Move Channel Confirm |
> | ----------------------------> |
> | |
> | Move Channel Confirm Response |
> | <---------------------------- |
>
> All four signals are sent even if the move fails.
>
> Signed-off-by: Mat Martineau <mathewm@xxxxxxxxxxxxxx>
> ---
> net/bluetooth/l2cap_core.c | 123 ++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 123 insertions(+), 0 deletions(-)
>
> diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
> index e38258b..ba64bab 100644
> --- a/net/bluetooth/l2cap_core.c
> +++ b/net/bluetooth/l2cap_core.c
> @@ -2957,6 +2957,112 @@ static inline int l2cap_create_channel_rsp(struct l2cap_conn *conn,
> return l2cap_connect_rsp(conn, cmd, data);
> }
>
> +static void l2cap_send_move_chan_rsp(struct l2cap_conn *conn, u8 ident,
> + u16 icid, u16 result)
> +{
> + struct l2cap_move_chan_rsp rsp;
> +
> + BT_DBG("icid %d, result %d", (int) icid, (int) result);
> +
> + rsp.icid = cpu_to_le16(icid);
> + rsp.result = cpu_to_le16(result);
> +
> + l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_RSP, sizeof(rsp), &rsp);
> +}
> +
> +static void l2cap_send_move_chan_cfm(struct l2cap_conn *conn,
> + struct l2cap_chan *chan, u16 icid, u16 result)
> +{
> + struct l2cap_move_chan_cfm cfm;
> + u8 ident;
> +
> + BT_DBG("icid %d, result %d", (int) icid, (int) result);
> +
> + ident = l2cap_get_ident(conn);
> + if (chan)
> + chan->ident = ident;
> +
> + cfm.icid = cpu_to_le16(icid);
> + cfm.result = cpu_to_le16(result);
> +
> + l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM, sizeof(cfm), &cfm);
> +}
> +
> +static void l2cap_send_move_chan_cfm_rsp(struct l2cap_conn *conn, u8 ident,
> + u16 icid)
> +{
> + struct l2cap_move_chan_cfm_rsp rsp;
> +
> + BT_DBG("icid %d", (int) icid);
> +
> + rsp.icid = cpu_to_le16(icid);
> + l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM_RSP, sizeof(rsp), &rsp);
> +}
> +
> +static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
> + struct l2cap_cmd_hdr *cmd, u8 *data)
> +{
> + struct l2cap_move_chan_req *req = (struct l2cap_move_chan_req *) data;
> + u16 icid = 0;
> + u16 result = L2CAP_MOVE_CHAN_REFUSED_NOT_ALLOWED;
> +
> + icid = le16_to_cpu(req->icid);
> +
> + BT_DBG("icid %d, dest_amp_id %d", (int) icid, (int) req->dest_amp_id);
> +
> + /* Placeholder: Always refuse */
> + l2cap_send_move_chan_rsp(conn, cmd->ident, icid, result);
> +
> + return 0;
> +}
It's a good idea protect the move channel request with enable_hs.
Gustavo
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