On Tue, Oct 16, 2012 at 04:36:31PM -0700, Mat Martineau wrote:
> When the channel policy is set to prefer AMP, then an L2CAP channel is
> set up using the "create channel" command rather than the "connect"
> command. A physical link is also set up before sending "create
> channel".
I feel that this patch doing something else that commit message implies.
So it is better to skip it for now.
>
> Behavior is unchanged if enable_hs is false.
>
> Signed-off-by: Mat Martineau <mathewm@xxxxxxxxxxxxxx>
> ---
> net/bluetooth/l2cap_core.c | 42 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 42 insertions(+)
>
> diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
> index 7e8fe84..17d917b 100644
> --- a/net/bluetooth/l2cap_core.c
> +++ b/net/bluetooth/l2cap_core.c
> @@ -58,6 +58,9 @@ static void l2cap_send_disconn_req(struct l2cap_conn *conn,
> static void l2cap_tx(struct l2cap_chan *chan, struct l2cap_ctrl *control,
> struct sk_buff_head *skbs, u8 event);
>
> +static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
> + u8 status);
> +
> /* ---- L2CAP channels ---- */
>
> static struct l2cap_chan *__l2cap_get_chan_by_dcid(struct l2cap_conn *conn,
> @@ -576,6 +579,13 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
> mgr->bredr_chan = NULL;
> }
>
> + if (chan->hs_hchan) {
> + chan->hs_hchan = NULL;
> + chan->hs_hcon = NULL;
> +
> + /* Placeholder - free logical link */
> + }
> +
Here we free logical link
> chan->ops->teardown(chan, err);
>
> if (test_bit(CONF_NOT_COMPLETE, &chan->conf_state))
> @@ -1126,6 +1136,7 @@ static void l2cap_start_connection(struct l2cap_chan *chan)
> {
> if (__amp_capable(chan)) {
> BT_DBG("chan %p AMP capable: discover AMPs", chan);
> + set_bit(CONF_CONNECT_PEND, &chan->conf_state);
> a2mp_discover_amp(chan);
> } else {
> l2cap_send_conn_req(chan);
> @@ -1271,6 +1282,16 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
> rsp.status = __constant_cpu_to_le16(L2CAP_CS_AUTHEN_PEND);
> }
>
> + if (rsp.result == __constant_cpu_to_le16(L2CAP_CR_SUCCESS) &&
> + chan->local_amp_id) {
> + /* Placeholder - uncomment when amp functions
> + * are available
> + amp_accept_physical(chan, chan->local_amp_id);
> + */
> + l2cap_chan_unlock(chan);
> + continue;
> + }
> +
> l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
> sizeof(rsp), &rsp);
>
> @@ -3359,6 +3380,18 @@ done:
> rfc.mode = chan->mode;
> }
>
> + if (test_bit(CONF_LOC_CONF_PEND, &chan->conf_state) &&
> + chan->local_amp_id) {
> + struct hci_chan *hchan = NULL;
> +
> + /* Placeholder - get hci_chan for logical link */
> +
> + if (hchan && hchan->state == BT_CONNECTED) {
> + l2cap_logical_cfm(chan, hchan,
> + L2CAP_MR_SUCCESS);
> + }
> + }
> +
this is configuration phase which is happening after channel is created
> if (result == L2CAP_CONF_SUCCESS)
> set_bit(CONF_OUTPUT_DONE, &chan->conf_state);
> }
> @@ -6367,6 +6400,15 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
> stat = L2CAP_CS_AUTHOR_PEND;
> chan->ops->defer(chan);
> } else {
> + if (chan->local_amp_id) {
> + /* Placeholder - accept physical
> + * link
> + amp_accept_physical(chan,
> + chan->local_amp_id);
> + */
> + continue;
> + }
> +
here is accept physical link
Best regards
Andrei Emeltchenko
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