Bluetooth: A2MP: Create A2MP channel

Create and initialize fixed A2MP channel

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

1 files changed, 69 insertions, 0 deletions

diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
new file mode 100644
index 000000000000..de455a264451
--- /dev/null
+++ b/net/bluetooth/a2mp.c
@@ -0,0 +1,69 @@
+/*
+   Copyright (c) 2010,2011 Code Aurora Forum.  All rights reserved.
+   Copyright (c) 2011,2012 Intel Corp.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 and
+   only version 2 as published by the Free Software Foundation.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+*/
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/l2cap.h>
+
+static struct l2cap_ops a2mp_chan_ops = {
+        .name = "L2CAP A2MP channel",
+};
+
+static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn)
+{
+        struct l2cap_chan *chan;
+        int err;
+
+        chan = l2cap_chan_create();
+        if (!chan)
+                return NULL;
+
+        BT_DBG("chan %p", chan);
+
+        hci_conn_hold(conn->hcon);
+
+        chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
+        chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
+        chan->flush_to = L2CAP_DEFAULT_FLUSH_TO;
+
+        chan->ops = &a2mp_chan_ops;
+
+        l2cap_chan_set_defaults(chan);
+        chan->remote_max_tx = chan->max_tx;
+        chan->remote_tx_win = chan->tx_win;
+
+        chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO;
+        chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO;
+
+        skb_queue_head_init(&chan->tx_q);
+
+        chan->mode = L2CAP_MODE_ERTM;
+
+        err = l2cap_ertm_init(chan);
+        if (err < 0) {
+                l2cap_chan_del(chan, 0);
+                return NULL;
+        }
+
+        chan->conf_state = 0;
+
+        l2cap_chan_add(conn, chan);
+
+        chan->remote_mps = chan->omtu;
+        chan->mps = chan->omtu;
+
+        chan->state = BT_CONNECTED;
+
+        return chan;
+}