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Bluetooth: make bluetooth 6lowpan as an option
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>
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@ -14,13 +14,34 @@
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#ifndef __6LOWPAN_H
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#define __6LOWPAN_H
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#include <linux/errno.h>
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#include <linux/skbuff.h>
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#include <net/bluetooth/l2cap.h>
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#if IS_ENABLED(CONFIG_BT_6LOWPAN)
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int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb);
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int bt_6lowpan_add_conn(struct l2cap_conn *conn);
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int bt_6lowpan_del_conn(struct l2cap_conn *conn);
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int bt_6lowpan_init(void);
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void bt_6lowpan_cleanup(void);
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#else
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static int bt_6lowpan_recv(struct l2cap_conn *conn, struct sk_buff *skb)
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{
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return -EOPNOTSUPP;
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}
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static int bt_6lowpan_add_conn(struct l2cap_conn *conn)
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{
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return -EOPNOTSUPP;
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}
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int bt_6lowpan_del_conn(struct l2cap_conn *conn)
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{
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return -EOPNOTSUPP;
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}
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static int bt_6lowpan_init(void)
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{
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return -EOPNOTSUPP;
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}
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static void bt_6lowpan_cleanup(void) { }
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#endif
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#endif /* __6LOWPAN_H */
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@ -12,7 +12,6 @@ menuconfig BT
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select CRYPTO_AES
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select CRYPTO_ECB
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select CRYPTO_SHA256
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select 6LOWPAN_IPHC
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help
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Bluetooth is low-cost, low-power, short-range wireless technology.
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It was designed as a replacement for cables and other short-range
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@ -40,6 +39,13 @@ menuconfig BT
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to Bluetooth kernel modules are provided in the BlueZ packages. For
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more information, see <http://www.bluez.org/>.
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config BT_6LOWPAN
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bool "Bluetooth 6LoWPAN support"
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depends on BT && IPV6
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select 6LOWPAN_IPHC
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help
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IPv6 compression over Bluetooth.
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source "net/bluetooth/rfcomm/Kconfig"
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source "net/bluetooth/bnep/Kconfig"
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@ -10,6 +10,7 @@ obj-$(CONFIG_BT_HIDP) += hidp/
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bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
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hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \
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a2mp.o amp.o 6lowpan.o
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a2mp.o amp.o
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bluetooth-$(CONFIG_BT_6LOWPAN) += 6lowpan.o
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subdir-ccflags-y += -D__CHECK_ENDIAN__
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