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Bluetooth: make bluetooth 6lowpan as an option

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Currently you can have bluetooth 6lowpan without ipv6 enabled. This
doesn't make any sense. With this patch you can disable/enable bluetooth
6lowpan support at compile time.

The current bluetooth 6lowpan implementation doesn't check the return
value of 6lowpan function. Nevertheless I added -EOPNOTSUPP as return value
if 6lowpan bluetooth is disabled.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2014-03-04 10:23:02 +01:00 committed by Marcel Holtmann
parent 53ac6ab612
commit 9755088797
3 changed files with 30 additions and 2 deletions
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21
net/bluetooth/6lowpan.h
View File

@ -14,13 +14,34 @@
#ifndef __6LOWPAN_H #ifndef __6LOWPAN_H
#define __6LOWPAN_H #define __6LOWPAN_H
#include <linux/errno.h>
#include <linux/skbuff.h> #include <linux/skbuff.h>
#include <net/bluetooth/l2cap.h> #include <net/bluetooth/l2cap.h>
#if IS_ENABLED(CONFIG_BT_6LOWPAN)
int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb); int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb);
int bt_6lowpan_add_conn(struct l2cap_conn *conn); int bt_6lowpan_add_conn(struct l2cap_conn *conn);
int bt_6lowpan_del_conn(struct l2cap_conn *conn); int bt_6lowpan_del_conn(struct l2cap_conn *conn);
int bt_6lowpan_init(void); int bt_6lowpan_init(void);
void bt_6lowpan_cleanup(void); void bt_6lowpan_cleanup(void);
#else
static int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb)
{
return -EOPNOTSUPP;
}
static int bt_6lowpan_add_conn(struct l2cap_conn *conn)
{
return -EOPNOTSUPP;
}
int bt_6lowpan_del_conn(struct l2cap_conn *conn)
{
return -EOPNOTSUPP;
}
static int bt_6lowpan_init(void)
{
return -EOPNOTSUPP;
}
static void bt_6lowpan_cleanup(void) { }
#endif
#endif /* __6LOWPAN_H */ #endif /* __6LOWPAN_H */

8
net/bluetooth/Kconfig
View File

@ -12,7 +12,6 @@ menuconfig BT
select CRYPTO_AES select CRYPTO_AES
select CRYPTO_ECB select CRYPTO_ECB
select CRYPTO_SHA256 select CRYPTO_SHA256
select 6LOWPAN_IPHC
help help
Bluetooth is low-cost, low-power, short-range wireless technology. Bluetooth is low-cost, low-power, short-range wireless technology.
It was designed as a replacement for cables and other short-range It was designed as a replacement for cables and other short-range
@ -40,6 +39,13 @@ menuconfig BT
to Bluetooth kernel modules are provided in the BlueZ packages. For to Bluetooth kernel modules are provided in the BlueZ packages. For
more information, see <http://www.bluez.org/>. more information, see <http://www.bluez.org/>.
config BT_6LOWPAN
bool "Bluetooth 6LoWPAN support"
depends on BT && IPV6
select 6LOWPAN_IPHC
help
IPv6 compression over Bluetooth.
source "net/bluetooth/rfcomm/Kconfig" source "net/bluetooth/rfcomm/Kconfig"
source "net/bluetooth/bnep/Kconfig" source "net/bluetooth/bnep/Kconfig"

3
net/bluetooth/Makefile
View File

@ -10,6 +10,7 @@ obj-$(CONFIG_BT_HIDP) += hidp/
bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \ bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \ hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \
a2mp.o amp.o 6lowpan.o a2mp.o amp.o
bluetooth-$(CONFIG_BT_6LOWPAN) += 6lowpan.o
subdir-ccflags-y += -D__CHECK_ENDIAN__ subdir-ccflags-y += -D__CHECK_ENDIAN__