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Bluetooth: Enable 6LoWPAN support for BT LE devices

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This is initial version of
http://tools.ietf.org/html/draft-ietf-6lo-btle-00

By default the 6LoWPAN support is not activated and user
needs to tweak /sys/kernel/debug/bluetooth/hci0/6lowpan
file.

The kernel needs IPv6 support before 6LoWPAN is usable.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jukka Rissanen
2013-12-11 17:05:37 +02:00
committed by Marcel Holtmann
parent e74bccb8a5
commit 18722c2470
8 changed files with 935 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/bluetooth/hci.h
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@@ -131,6 +131,7 @@ enum {
HCI_PERIODIC_INQ,
HCI_FAST_CONNECTABLE,
HCI_BREDR_ENABLED,
HCI_6LOWPAN_ENABLED,
};
/* A mask for the flags that are supposed to remain when a reset happens

1
include/net/bluetooth/hci_core.h
View File

@@ -448,6 +448,7 @@ enum {
HCI_CONN_SSP_ENABLED,
HCI_CONN_POWER_SAVE,
HCI_CONN_REMOTE_OOB,
HCI_CONN_6LOWPAN,
};
static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)

1
include/net/bluetooth/l2cap.h
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@@ -136,6 +136,7 @@ struct l2cap_conninfo {
#define L2CAP_FC_L2CAP 0x02
#define L2CAP_FC_CONNLESS 0x04
#define L2CAP_FC_A2MP 0x08
#define L2CAP_FC_6LOWPAN 0x3e /* reserved and temporary value */
/* L2CAP Control Field bit masks */
#define L2CAP_CTRL_SAR 0xC000

886
net/bluetooth/6lowpan.c Normal file
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File diff suppressed because it is too large Load Diff

26
net/bluetooth/6lowpan.h Normal file
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@@ -0,0 +1,26 @@
/*
Copyright (c) 2013 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.
*/
#ifndef __6LOWPAN_H
#define __6LOWPAN_H
#include <linux/skbuff.h>
#include <net/bluetooth/l2cap.h>
int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb);
int bt_6lowpan_add_conn(struct l2cap_conn *conn);
int bt_6lowpan_del_conn(struct l2cap_conn *conn);
int bt_6lowpan_init(void);
void bt_6lowpan_cleanup(void);
#endif /* __6LOWPAN_H */

6
net/bluetooth/Makefile
View File

@@ -10,6 +10,10 @@ obj-$(CONFIG_BT_HIDP) += hidp/
bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \
a2mp.o amp.o
a2mp.o amp.o 6lowpan.o
ifeq ($(CONFIG_IEEE802154_6LOWPAN),)
bluetooth-y += ../ieee802154/6lowpan_iphc.o
endif
subdir-ccflags-y += -D__CHECK_ENDIAN__

3
net/bluetooth/hci_event.c
View File

@@ -3533,6 +3533,9 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn->handle = __le16_to_cpu(ev->handle);
conn->state = BT_CONNECTED;
if (test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags))
set_bit(HCI_CONN_6LOWPAN, &conn->flags);
hci_conn_add_sysfs(conn);
hci_proto_connect_cfm(conn, ev->status);

12
net/bluetooth/l2cap_core.c
View File

@@ -40,6 +40,7 @@
#include "smp.h"
#include "a2mp.h"
#include "amp.h"
#include "6lowpan.h"
bool disable_ertm;
@@ -1468,6 +1469,8 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
BT_DBG("");
bt_6lowpan_add_conn(conn);
/* Check if we have socket listening on cid */
pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_ATT,
&hcon->src, &hcon->dst);
@@ -7119,6 +7122,10 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
l2cap_conn_del(conn->hcon, EACCES);
break;
case L2CAP_FC_6LOWPAN:
bt_6lowpan_recv(conn, skb);
break;
default:
l2cap_data_channel(conn, cid, skb);
break;
@@ -7186,6 +7193,8 @@ void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason)
{
BT_DBG("hcon %p reason %d", hcon, reason);
bt_6lowpan_del_conn(hcon->l2cap_data);
l2cap_conn_del(hcon, bt_to_errno(reason));
}
@@ -7467,11 +7476,14 @@ int __init l2cap_init(void)
debugfs_create_u16("l2cap_le_default_mps", 0466, bt_debugfs,
&le_default_mps);
bt_6lowpan_init();
return 0;
}
void l2cap_exit(void)
{
bt_6lowpan_cleanup();
debugfs_remove(l2cap_debugfs);
l2cap_cleanup_sockets();
}