Andrei Emeltchenko | 466f800 | 2012-05-29 13:59:01 +0300 | [diff] [blame] | 1 | /* |
| 2 | Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved. |
| 3 | Copyright (c) 2011,2012 Intel Corp. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License version 2 and |
| 7 | only version 2 as published by the Free Software Foundation. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #include <net/bluetooth/bluetooth.h> |
| 16 | #include <net/bluetooth/hci_core.h> |
| 17 | #include <net/bluetooth/l2cap.h> |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame^] | 18 | #include <net/bluetooth/a2mp.h> |
Andrei Emeltchenko | 466f800 | 2012-05-29 13:59:01 +0300 | [diff] [blame] | 19 | |
| 20 | static struct l2cap_ops a2mp_chan_ops = { |
| 21 | .name = "L2CAP A2MP channel", |
| 22 | }; |
| 23 | |
| 24 | static struct l2cap_chan *a2mp_chan_open(struct l2cap_conn *conn) |
| 25 | { |
| 26 | struct l2cap_chan *chan; |
| 27 | int err; |
| 28 | |
| 29 | chan = l2cap_chan_create(); |
| 30 | if (!chan) |
| 31 | return NULL; |
| 32 | |
| 33 | BT_DBG("chan %p", chan); |
| 34 | |
| 35 | hci_conn_hold(conn->hcon); |
| 36 | |
| 37 | chan->omtu = L2CAP_A2MP_DEFAULT_MTU; |
| 38 | chan->imtu = L2CAP_A2MP_DEFAULT_MTU; |
| 39 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
| 40 | |
| 41 | chan->ops = &a2mp_chan_ops; |
| 42 | |
| 43 | l2cap_chan_set_defaults(chan); |
| 44 | chan->remote_max_tx = chan->max_tx; |
| 45 | chan->remote_tx_win = chan->tx_win; |
| 46 | |
| 47 | chan->retrans_timeout = L2CAP_DEFAULT_RETRANS_TO; |
| 48 | chan->monitor_timeout = L2CAP_DEFAULT_MONITOR_TO; |
| 49 | |
| 50 | skb_queue_head_init(&chan->tx_q); |
| 51 | |
| 52 | chan->mode = L2CAP_MODE_ERTM; |
| 53 | |
| 54 | err = l2cap_ertm_init(chan); |
| 55 | if (err < 0) { |
| 56 | l2cap_chan_del(chan, 0); |
| 57 | return NULL; |
| 58 | } |
| 59 | |
| 60 | chan->conf_state = 0; |
| 61 | |
| 62 | l2cap_chan_add(conn, chan); |
| 63 | |
| 64 | chan->remote_mps = chan->omtu; |
| 65 | chan->mps = chan->omtu; |
| 66 | |
| 67 | chan->state = BT_CONNECTED; |
| 68 | |
| 69 | return chan; |
| 70 | } |
Andrei Emeltchenko | 9740e49 | 2012-05-29 13:59:02 +0300 | [diff] [blame^] | 71 | |
| 72 | /* AMP Manager functions */ |
| 73 | void amp_mgr_get(struct amp_mgr *mgr) |
| 74 | { |
| 75 | BT_DBG("mgr %p", mgr); |
| 76 | |
| 77 | kref_get(&mgr->kref); |
| 78 | } |
| 79 | |
| 80 | static void amp_mgr_destroy(struct kref *kref) |
| 81 | { |
| 82 | struct amp_mgr *mgr = container_of(kref, struct amp_mgr, kref); |
| 83 | |
| 84 | BT_DBG("mgr %p", mgr); |
| 85 | |
| 86 | kfree(mgr); |
| 87 | } |
| 88 | |
| 89 | int amp_mgr_put(struct amp_mgr *mgr) |
| 90 | { |
| 91 | BT_DBG("mgr %p", mgr); |
| 92 | |
| 93 | return kref_put(&mgr->kref, &_mgr_destroy); |
| 94 | } |
| 95 | |
| 96 | static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn) |
| 97 | { |
| 98 | struct amp_mgr *mgr; |
| 99 | struct l2cap_chan *chan; |
| 100 | |
| 101 | mgr = kzalloc(sizeof(*mgr), GFP_KERNEL); |
| 102 | if (!mgr) |
| 103 | return NULL; |
| 104 | |
| 105 | BT_DBG("conn %p mgr %p", conn, mgr); |
| 106 | |
| 107 | mgr->l2cap_conn = conn; |
| 108 | |
| 109 | chan = a2mp_chan_open(conn); |
| 110 | if (!chan) { |
| 111 | kfree(mgr); |
| 112 | return NULL; |
| 113 | } |
| 114 | |
| 115 | mgr->a2mp_chan = chan; |
| 116 | chan->data = mgr; |
| 117 | |
| 118 | conn->hcon->amp_mgr = mgr; |
| 119 | |
| 120 | kref_init(&mgr->kref); |
| 121 | |
| 122 | return mgr; |
| 123 | } |