[PATCH v2 1/2] Bluetooth: Always compile SCO and L2CAP in Bluetooth Core

[PATCH v2 1/2] Bluetooth: Always compile SCO and L2CAP in Bluetooth Core

[Ulisses Furquim]

The handling of SCO audio links and the L2CAP protocol are essential to
any system with Bluetooth thus are always compiled in from now on.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
---
 include/net/bluetooth/bluetooth.h |   22 ----------------------
 net/bluetooth/Kconfig             |   37 +++++++++----------------------------
 net/bluetooth/Makefile            |    5 ++---
 net/bluetooth/bnep/Kconfig        |    2 +-
 net/bluetooth/cmtp/Kconfig        |    2 +-
 net/bluetooth/hidp/Kconfig        |    2 +-
 net/bluetooth/rfcomm/Kconfig      |    2 +-
 7 files changed, 15 insertions(+), 57 deletions(-)

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 980e59f..abaad6e 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -250,32 +250,10 @@ extern void bt_sysfs_cleanup(void);
 
 extern struct dentry *bt_debugfs;
 
-#ifdef CONFIG_BT_L2CAP
 int l2cap_init(void);
 void l2cap_exit(void);
-#else
-static inline int l2cap_init(void)
-{
-	return 0;
-}
-
-static inline void l2cap_exit(void)
-{
-}
-#endif
 
-#ifdef CONFIG_BT_SCO
 int sco_init(void);
 void sco_exit(void);
-#else
-static inline int sco_init(void)
-{
-	return 0;
-}
-
-static inline void sco_exit(void)
-{
-}
-#endif
 
 #endif /* __BLUETOOTH_H */
diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index bfb3dc0..9ec85eb 100644
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -6,7 +6,11 @@ menuconfig BT
 	tristate "Bluetooth subsystem support"
 	depends on NET && !S390
 	depends on RFKILL || !RFKILL
+	select CRC16
 	select CRYPTO
+	select CRYPTO_BLKCIPHER
+	select CRYPTO_AES
+	select CRYPTO_ECB
 	help
 	  Bluetooth is low-cost, low-power, short-range wireless technology.
 	  It was designed as a replacement for cables and other short-range
@@ -15,10 +19,12 @@ menuconfig BT
 	  Bluetooth can be found at <http://www.bluetooth.com/>.
 
 	  Linux Bluetooth subsystem consist of several layers:
-	     Bluetooth Core (HCI device and connection manager, scheduler)
+	     Bluetooth Core
+		HCI device and connection manager, scheduler
+		SCO audio links
+		L2CAP (Logical Link Control and Adaptation Protocol)
+		SMP (Security Manager Protocol) on LE (Low Energy) links
 	     HCI Device drivers (Interface to the hardware)
-	     SCO Module (SCO audio links)
-	     L2CAP Module (Logical Link Control and Adaptation Protocol)
 	     RFCOMM Module (RFCOMM Protocol)  
 	     BNEP Module (Bluetooth Network Encapsulation Protocol)
 	     CMTP Module (CAPI Message Transport Protocol)
@@ -33,31 +39,6 @@ menuconfig BT
 	  to Bluetooth kernel modules are provided in the BlueZ packages.  For
 	  more information, see <http://www.bluez.org/>.
 
-if BT != n
-
-config BT_L2CAP
-	bool "L2CAP protocol support"
-	select CRC16
-	select CRYPTO
-	select CRYPTO_BLKCIPHER
-	select CRYPTO_AES
-	select CRYPTO_ECB
-	help
-	  L2CAP (Logical Link Control and Adaptation Protocol) provides
-	  connection oriented and connection-less data transport.  L2CAP
-	  support is required for most Bluetooth applications.
-
-	  Also included is support for SMP (Security Manager Protocol) which
-	  is the security layer on top of LE (Low Energy) links.
-
-config BT_SCO
-	bool "SCO links support"
-	help
-	  SCO link provides voice transport over Bluetooth.  SCO support is
-	  required for voice applications like Headset and Audio.
-
-endif
-
 source "net/bluetooth/rfcomm/Kconfig"
 
 source "net/bluetooth/bnep/Kconfig"
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index 9b67f3d..2dc5a57 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -8,6 +8,5 @@ obj-$(CONFIG_BT_BNEP)	+= bnep/
 obj-$(CONFIG_BT_CMTP)	+= cmtp/
 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 lib.o
-bluetooth-$(CONFIG_BT_L2CAP)	+= l2cap_core.o l2cap_sock.o smp.o
-bluetooth-$(CONFIG_BT_SCO)	+= sco.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
diff --git a/net/bluetooth/bnep/Kconfig b/net/bluetooth/bnep/Kconfig
index 35158b0..71791fc 100644
--- a/net/bluetooth/bnep/Kconfig
+++ b/net/bluetooth/bnep/Kconfig
@@ -1,6 +1,6 @@
 config BT_BNEP
 	tristate "BNEP protocol support"
-	depends on BT && BT_L2CAP
+	depends on BT
 	select CRC32
 	help
 	  BNEP (Bluetooth Network Encapsulation Protocol) is Ethernet
diff --git a/net/bluetooth/cmtp/Kconfig b/net/bluetooth/cmtp/Kconfig
index d6b0382..94cbf42 100644
--- a/net/bluetooth/cmtp/Kconfig
+++ b/net/bluetooth/cmtp/Kconfig
@@ -1,6 +1,6 @@
 config BT_CMTP
 	tristate "CMTP protocol support"
-	depends on BT && BT_L2CAP && ISDN_CAPI
+	depends on BT && ISDN_CAPI
 	help
 	  CMTP (CAPI Message Transport Protocol) is a transport layer
 	  for CAPI messages.  CMTP is required for the Bluetooth Common
diff --git a/net/bluetooth/hidp/Kconfig b/net/bluetooth/hidp/Kconfig
index 86a9154..4deaca7 100644
--- a/net/bluetooth/hidp/Kconfig
+++ b/net/bluetooth/hidp/Kconfig
@@ -1,6 +1,6 @@
 config BT_HIDP
 	tristate "HIDP protocol support"
-	depends on BT && BT_L2CAP && INPUT && HID_SUPPORT
+	depends on BT && INPUT && HID_SUPPORT
 	select HID
 	help
 	  HIDP (Human Interface Device Protocol) is a transport layer
diff --git a/net/bluetooth/rfcomm/Kconfig b/net/bluetooth/rfcomm/Kconfig
index 405a0e6..22e718b 100644
--- a/net/bluetooth/rfcomm/Kconfig
+++ b/net/bluetooth/rfcomm/Kconfig
@@ -1,6 +1,6 @@
 config BT_RFCOMM
 	tristate "RFCOMM protocol support"
-	depends on BT && BT_L2CAP
+	depends on BT
 	help
 	  RFCOMM provides connection oriented stream transport.  RFCOMM
 	  support is required for Dialup Networking, OBEX and other Bluetooth
-- 
1.7.8.rc4

[PATCH v2 2/2] Bluetooth: Make HCI call directly into SCO and L2CAP event functions

[Ulisses Furquim]

The struct hci_proto and all related register/unregister and dispatching
code was removed. HCI core code now call directly the SCO and L2CAP
event functions.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
---
 include/net/bluetooth/hci_core.h |  125 ++++++++++++-------------------------
 net/bluetooth/hci_core.c         |   59 +-----------------
 net/bluetooth/l2cap_core.c       |   51 ++-------------
 net/bluetooth/sco.c              |   38 +----------
 4 files changed, 56 insertions(+), 217 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 25c161a..bf41ca2 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -28,10 +28,6 @@
 #include <linux/interrupt.h>
 #include <net/bluetooth/hci.h>
 
-/* HCI upper protocols */
-#define HCI_PROTO_L2CAP	0
-#define HCI_PROTO_SCO	1
-
 /* HCI priority */
 #define HCI_PRIO_MAX	7
 
@@ -330,12 +326,24 @@ struct hci_chan {
 	unsigned int	sent;
 };
 
-extern struct hci_proto *hci_proto[];
 extern struct list_head hci_dev_list;
 extern struct list_head hci_cb_list;
 extern rwlock_t hci_dev_list_lock;
 extern rwlock_t hci_cb_list_lock;
 
+/* ----- HCI interface to upper protocols ----- */
+extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
+extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
+extern int l2cap_disconn_ind(struct hci_conn *hcon);
+extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
+extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
+extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
+
+extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
+extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
+extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
+extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
+
 /* ----- Inquiry cache ----- */
 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
@@ -677,53 +685,26 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
 #define lmp_host_le_capable(dev)   ((dev)->extfeatures[0] & LMP_HOST_LE)
 
 /* ----- HCI protocols ----- */
-struct hci_proto {
-	char		*name;
-	unsigned int	id;
-	unsigned long	flags;
-
-	void		*priv;
-
-	int (*connect_ind)	(struct hci_dev *hdev, bdaddr_t *bdaddr,
-								__u8 type);
-	int (*connect_cfm)	(struct hci_conn *conn, __u8 status);
-	int (*disconn_ind)	(struct hci_conn *conn);
-	int (*disconn_cfm)	(struct hci_conn *conn, __u8 reason);
-	int (*recv_acldata)	(struct hci_conn *conn, struct sk_buff *skb,
-								__u16 flags);
-	int (*recv_scodata)	(struct hci_conn *conn, struct sk_buff *skb);
-	int (*security_cfm)	(struct hci_conn *conn, __u8 status,
-								__u8 encrypt);
-};
-
 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 								__u8 type)
 {
-	register struct hci_proto *hp;
-	int mask = 0;
-
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->connect_ind)
-		mask |= hp->connect_ind(hdev, bdaddr, type);
+	if (type == ACL_LINK)
+		return l2cap_connect_ind(hdev, bdaddr);
+	else if (type == SCO_LINK || type == ESCO_LINK)
+		return sco_connect_ind(hdev, bdaddr);
 
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->connect_ind)
-		mask |= hp->connect_ind(hdev, bdaddr, type);
-
-	return mask;
+	BT_DBG("unknown link type %d", type);
+	return -EINVAL;
 }
 
 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 {
-	register struct hci_proto *hp;
-
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->connect_cfm)
-		hp->connect_cfm(conn, status);
-
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->connect_cfm)
-		hp->connect_cfm(conn, status);
+	if (conn->type == ACL_LINK || conn->type == LE_LINK)
+		l2cap_connect_cfm(conn, status);
+	else if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
+		sco_connect_cfm(conn, status);
+	else
+		BT_DBG("unknown link type %d", conn->type);
 
 	if (conn->connect_cfm_cb)
 		conn->connect_cfm_cb(conn, status);
@@ -731,31 +712,20 @@ static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 
 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 {
-	register struct hci_proto *hp;
-	int reason = HCI_ERROR_REMOTE_USER_TERM;
+	if (conn->type != ACL_LINK && conn->type != LE_LINK)
+		return HCI_ERROR_REMOTE_USER_TERM;
 
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->disconn_ind)
-		reason = hp->disconn_ind(conn);
-
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->disconn_ind)
-		reason = hp->disconn_ind(conn);
-
-	return reason;
+	return l2cap_disconn_ind(conn);
 }
 
 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 {
-	register struct hci_proto *hp;
-
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->disconn_cfm)
-		hp->disconn_cfm(conn, reason);
-
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->disconn_cfm)
-		hp->disconn_cfm(conn, reason);
+	if (conn->type == ACL_LINK || conn->type == LE_LINK)
+		l2cap_disconn_cfm(conn, reason);
+	else if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
+		sco_disconn_cfm(conn, reason);
+	else
+		BT_DBG("unknown link type %d", conn->type);
 
 	if (conn->disconn_cfm_cb)
 		conn->disconn_cfm_cb(conn, reason);
@@ -763,21 +733,16 @@ static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 
 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 {
-	register struct hci_proto *hp;
 	__u8 encrypt;
 
+	if (conn->type != ACL_LINK && conn->type != LE_LINK)
+		return;
+
 	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 		return;
 
 	encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
-
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->security_cfm)
-		hp->security_cfm(conn, status, encrypt);
-
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->security_cfm)
-		hp->security_cfm(conn, status, encrypt);
+	l2cap_security_cfm(conn, status, encrypt);
 
 	if (conn->security_cfm_cb)
 		conn->security_cfm_cb(conn, status);
@@ -786,23 +751,15 @@ static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 								__u8 encrypt)
 {
-	register struct hci_proto *hp;
-
-	hp = hci_proto[HCI_PROTO_L2CAP];
-	if (hp && hp->security_cfm)
-		hp->security_cfm(conn, status, encrypt);
+	if (conn->type != ACL_LINK && conn->type != LE_LINK)
+		return;
 
-	hp = hci_proto[HCI_PROTO_SCO];
-	if (hp && hp->security_cfm)
-		hp->security_cfm(conn, status, encrypt);
+	l2cap_security_cfm(conn, status, encrypt);
 
 	if (conn->security_cfm_cb)
 		conn->security_cfm_cb(conn, status);
 }
 
-int hci_register_proto(struct hci_proto *hproto);
-int hci_unregister_proto(struct hci_proto *hproto);
-
 /* ----- HCI callbacks ----- */
 struct hci_cb {
 	struct list_head list;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index fea8dad..22c8331 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -69,10 +69,6 @@ DEFINE_RWLOCK(hci_dev_list_lock);
 LIST_HEAD(hci_cb_list);
 DEFINE_RWLOCK(hci_cb_list_lock);
 
-/* HCI protocols */
-#define HCI_MAX_PROTO	2
-struct hci_proto *hci_proto[HCI_MAX_PROTO];
-
 /* HCI notifiers list */
 static ATOMIC_NOTIFIER_HEAD(hci_notifier);
 
@@ -1830,43 +1826,6 @@ EXPORT_SYMBOL(hci_recv_stream_fragment);
 
 /* ---- Interface to upper protocols ---- */
 
-/* Register/Unregister protocols. */
-int hci_register_proto(struct hci_proto *hp)
-{
-	int err = 0;
-
-	BT_DBG("%p name %s id %d", hp, hp->name, hp->id);
-
-	if (hp->id >= HCI_MAX_PROTO)
-		return -EINVAL;
-
-	if (!hci_proto[hp->id])
-		hci_proto[hp->id] = hp;
-	else
-		err = -EEXIST;
-
-	return err;
-}
-EXPORT_SYMBOL(hci_register_proto);
-
-int hci_unregister_proto(struct hci_proto *hp)
-{
-	int err = 0;
-
-	BT_DBG("%p name %s id %d", hp, hp->name, hp->id);
-
-	if (hp->id >= HCI_MAX_PROTO)
-		return -EINVAL;
-
-	if (hci_proto[hp->id])
-		hci_proto[hp->id] = NULL;
-	else
-		err = -ENOENT;
-
-	return err;
-}
-EXPORT_SYMBOL(hci_unregister_proto);
-
 int hci_register_cb(struct hci_cb *cb)
 {
 	BT_DBG("%p name %s", cb, cb->name);
@@ -2470,16 +2429,11 @@ static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	hci_dev_unlock(hdev);
 
 	if (conn) {
-		register struct hci_proto *hp;
-
 		hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF);
 
 		/* Send to upper protocol */
-		hp = hci_proto[HCI_PROTO_L2CAP];
-		if (hp && hp->recv_acldata) {
-			hp->recv_acldata(conn, skb, flags);
-			return;
-		}
+		l2cap_recv_acldata(conn, skb, flags);
+		return;
 	} else {
 		BT_ERR("%s ACL packet for unknown connection handle %d",
 			hdev->name, handle);
@@ -2508,14 +2462,9 @@ static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb)
 	hci_dev_unlock(hdev);
 
 	if (conn) {
-		register struct hci_proto *hp;
-
 		/* Send to upper protocol */
-		hp = hci_proto[HCI_PROTO_SCO];
-		if (hp && hp->recv_scodata) {
-			hp->recv_scodata(conn, skb);
-			return;
-		}
+		sco_recv_scodata(conn, skb);
+		return;
 	} else {
 		BT_ERR("%s SCO packet for unknown connection handle %d",
 			hdev->name, handle);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index a898285..1732183 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4413,14 +4413,11 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
 
 /* ---- L2CAP interface with lower layer (HCI) ---- */
 
-static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
+int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
 	int exact = 0, lm1 = 0, lm2 = 0;
 	struct l2cap_chan *c;
 
-	if (type != ACL_LINK)
-		return -EINVAL;
-
 	BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
 
 	/* Find listening sockets and check their link_mode */
@@ -4447,15 +4444,12 @@ static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 	return exact ? lm1 : lm2;
 }
 
-static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
+int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
 {
 	struct l2cap_conn *conn;
 
 	BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
 
-	if (!(hcon->type == ACL_LINK || hcon->type == LE_LINK))
-		return -EINVAL;
-
 	if (!status) {
 		conn = l2cap_conn_add(hcon, status);
 		if (conn)
@@ -4466,27 +4460,22 @@ static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
 	return 0;
 }
 
-static int l2cap_disconn_ind(struct hci_conn *hcon)
+int l2cap_disconn_ind(struct hci_conn *hcon)
 {
 	struct l2cap_conn *conn = hcon->l2cap_data;
 
 	BT_DBG("hcon %p", hcon);
 
-	if ((hcon->type != ACL_LINK && hcon->type != LE_LINK) || !conn)
+	if (!conn)
 		return HCI_ERROR_REMOTE_USER_TERM;
-
 	return conn->disc_reason;
 }
 
-static int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason)
+int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason)
 {
 	BT_DBG("hcon %p reason %d", hcon, reason);
 
-	if (!(hcon->type == ACL_LINK || hcon->type == LE_LINK))
-		return -EINVAL;
-
 	l2cap_conn_del(hcon, bt_to_errno(reason));
-
 	return 0;
 }
 
@@ -4507,7 +4496,7 @@ static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)
 	}
 }
 
-static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
+int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 {
 	struct l2cap_conn *conn = hcon->l2cap_data;
 	struct l2cap_chan *chan;
@@ -4607,7 +4596,7 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 	return 0;
 }
 
-static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
+int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
 {
 	struct l2cap_conn *conn = hcon->l2cap_data;
 
@@ -4754,17 +4743,6 @@ static const struct file_operations l2cap_debugfs_fops = {
 
 static struct dentry *l2cap_debugfs;
 
-static struct hci_proto l2cap_hci_proto = {
-	.name		= "L2CAP",
-	.id		= HCI_PROTO_L2CAP,
-	.connect_ind	= l2cap_connect_ind,
-	.connect_cfm	= l2cap_connect_cfm,
-	.disconn_ind	= l2cap_disconn_ind,
-	.disconn_cfm	= l2cap_disconn_cfm,
-	.security_cfm	= l2cap_security_cfm,
-	.recv_acldata	= l2cap_recv_acldata
-};
-
 int __init l2cap_init(void)
 {
 	int err;
@@ -4773,13 +4751,6 @@ int __init l2cap_init(void)
 	if (err < 0)
 		return err;
 
-	err = hci_register_proto(&l2cap_hci_proto);
-	if (err < 0) {
-		BT_ERR("L2CAP protocol registration failed");
-		bt_sock_unregister(BTPROTO_L2CAP);
-		goto error;
-	}
-
 	if (bt_debugfs) {
 		l2cap_debugfs = debugfs_create_file("l2cap", 0444,
 					bt_debugfs, NULL, &l2cap_debugfs_fops);
@@ -4788,19 +4759,11 @@ int __init l2cap_init(void)
 	}
 
 	return 0;
-
-error:
-	l2cap_cleanup_sockets();
-	return err;
 }
 
 void l2cap_exit(void)
 {
 	debugfs_remove(l2cap_debugfs);
-
-	if (hci_unregister_proto(&l2cap_hci_proto) < 0)
-		BT_ERR("L2CAP protocol unregistration failed");
-
 	l2cap_cleanup_sockets();
 }
 
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 725e10d..0d59e61 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -893,15 +893,12 @@ done:
 }
 
 /* ----- SCO interface with lower layer (HCI) ----- */
-static int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
+int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
 	register struct sock *sk;
 	struct hlist_node *node;
 	int lm = 0;
 
-	if (type != SCO_LINK && type != ESCO_LINK)
-		return -EINVAL;
-
 	BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
 
 	/* Find listening sockets */
@@ -921,13 +918,9 @@ static int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 	return lm;
 }
 
-static int sco_connect_cfm(struct hci_conn *hcon, __u8 status)
+int sco_connect_cfm(struct hci_conn *hcon, __u8 status)
 {
 	BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
-
-	if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
-		return -EINVAL;
-
 	if (!status) {
 		struct sco_conn *conn;
 
@@ -940,19 +933,15 @@ static int sco_connect_cfm(struct hci_conn *hcon, __u8 status)
 	return 0;
 }
 
-static int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
+int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
 {
 	BT_DBG("hcon %p reason %d", hcon, reason);
 
-	if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
-		return -EINVAL;
-
 	sco_conn_del(hcon, bt_to_errno(reason));
-
 	return 0;
 }
 
-static int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
+int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 {
 	struct sco_conn *conn = hcon->sco_data;
 
@@ -1028,15 +1017,6 @@ static const struct net_proto_family sco_sock_family_ops = {
 	.create	= sco_sock_create,
 };
 
-static struct hci_proto sco_hci_proto = {
-	.name		= "SCO",
-	.id		= HCI_PROTO_SCO,
-	.connect_ind	= sco_connect_ind,
-	.connect_cfm	= sco_connect_cfm,
-	.disconn_cfm	= sco_disconn_cfm,
-	.recv_scodata	= sco_recv_scodata
-};
-
 int __init sco_init(void)
 {
 	int err;
@@ -1051,13 +1031,6 @@ int __init sco_init(void)
 		goto error;
 	}
 
-	err = hci_register_proto(&sco_hci_proto);
-	if (err < 0) {
-		BT_ERR("SCO protocol registration failed");
-		bt_sock_unregister(BTPROTO_SCO);
-		goto error;
-	}
-
 	if (bt_debugfs) {
 		sco_debugfs = debugfs_create_file("sco", 0444,
 					bt_debugfs, NULL, &sco_debugfs_fops);
@@ -1081,9 +1054,6 @@ void __exit sco_exit(void)
 	if (bt_sock_unregister(BTPROTO_SCO) < 0)
 		BT_ERR("SCO socket unregistration failed");
 
-	if (hci_unregister_proto(&sco_hci_proto) < 0)
-		BT_ERR("SCO protocol unregistration failed");
-
 	proto_unregister(&sco_proto);
 }
 
-- 
1.7.8.rc4

Re: [PATCH v2 1/2] Bluetooth: Always compile SCO and L2CAP in Bluetooth Core

[Marcel Holtmann]

Hi Ulisses,

> The handling of SCO audio links and the L2CAP protocol are essential to
> any system with Bluetooth thus are always compiled in from now on.
> 
> Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
> ---
>  include/net/bluetooth/bluetooth.h |   22 ----------------------
>  net/bluetooth/Kconfig             |   37 +++++++++----------------------------
>  net/bluetooth/Makefile            |    5 ++---
>  net/bluetooth/bnep/Kconfig        |    2 +-
>  net/bluetooth/cmtp/Kconfig        |    2 +-
>  net/bluetooth/hidp/Kconfig        |    2 +-
>  net/bluetooth/rfcomm/Kconfig      |    2 +-
>  7 files changed, 15 insertions(+), 57 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel

Re: [PATCH v2 2/2] Bluetooth: Make HCI call directly into SCO and L2CAP event functions

[Marcel Holtmann]

Hi Ulisses,

> The struct hci_proto and all related register/unregister and dispatching
> code was removed. HCI core code now call directly the SCO and L2CAP
> event functions.
> 
> Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
> ---
>  include/net/bluetooth/hci_core.h |  125 ++++++++++++-------------------------
>  net/bluetooth/hci_core.c         |   59 +-----------------
>  net/bluetooth/l2cap_core.c       |   51 ++-------------
>  net/bluetooth/sco.c              |   38 +----------
>  4 files changed, 56 insertions(+), 217 deletions(-)

<snip>

>  static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
>  								__u8 type)
>  {
> -	register struct hci_proto *hp;
> -	int mask = 0;
> -
> -	hp = hci_proto[HCI_PROTO_L2CAP];
> -	if (hp && hp->connect_ind)
> -		mask |= hp->connect_ind(hdev, bdaddr, type);
> +	if (type == ACL_LINK)
> +		return l2cap_connect_ind(hdev, bdaddr);
> +	else if (type == SCO_LINK || type == ESCO_LINK)
> +		return sco_connect_ind(hdev, bdaddr);

this one screams switch statement.
 
> -	hp = hci_proto[HCI_PROTO_SCO];
> -	if (hp && hp->connect_ind)
> -		mask |= hp->connect_ind(hdev, bdaddr, type);
> -
> -	return mask;
> +	BT_DBG("unknown link type %d", type);

And make this BT_ERR. It is fine to just actually print an error. We
could also think about just calling BUG here. Since it really should not
happen and if it does, we have a real problem.

> +	return -EINVAL;
>  }
>  
>  static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
>  {
> -	register struct hci_proto *hp;
> -
> -	hp = hci_proto[HCI_PROTO_L2CAP];
> -	if (hp && hp->connect_cfm)
> -		hp->connect_cfm(conn, status);
> -
> -	hp = hci_proto[HCI_PROTO_SCO];
> -	if (hp && hp->connect_cfm)
> -		hp->connect_cfm(conn, status);
> +	if (conn->type == ACL_LINK || conn->type == LE_LINK)
> +		l2cap_connect_cfm(conn, status);
> +	else if (conn->type == SCO_LINK || conn->type == ESCO_LINK)
> +		sco_connect_cfm(conn, status);
> +	else
> +		BT_DBG("unknown link type %d", conn->type);

Still switch statement looks way cleaner here. And so on.

Regards

Marcel

Re: [PATCH v2 1/2] Bluetooth: Always compile SCO and L2CAP in Bluetooth Core

[Gustavo Padovan]

Hi Ulisses,

* Ulisses Furquim <ulisses@profusion.mobi> [2011-12-21 01:32:09 -0200]:

> The handling of SCO audio links and the L2CAP protocol are essential to
> any system with Bluetooth thus are always compiled in from now on.
> 
> Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
> ---
>  include/net/bluetooth/bluetooth.h |   22 ----------------------
>  net/bluetooth/Kconfig             |   37 +++++++++----------------------------
>  net/bluetooth/Makefile            |    5 ++---
>  net/bluetooth/bnep/Kconfig        |    2 +-
>  net/bluetooth/cmtp/Kconfig        |    2 +-
>  net/bluetooth/hidp/Kconfig        |    2 +-
>  net/bluetooth/rfcomm/Kconfig      |    2 +-
>  7 files changed, 15 insertions(+), 57 deletions(-)

This one is also applied, thanks.

	Gustavo

Re: [PATCH v2 2/2] Bluetooth: Make HCI call directly into SCO and L2CAP event functions

[Andrei Emeltchenko]

Hi Ulisses,

On Wed, Dec 21, 2011 at 01:32:10AM -0200, Ulisses Furquim wrote:
> The struct hci_proto and all related register/unregister and dispatching
> code was removed. HCI core code now call directly the SCO and L2CAP
> event functions.
> 
> Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
> ---
>  include/net/bluetooth/hci_core.h |  125 ++++++++++++-------------------------
>  net/bluetooth/hci_core.c         |   59 +-----------------
>  net/bluetooth/l2cap_core.c       |   51 ++-------------
>  net/bluetooth/sco.c              |   38 +----------
>  4 files changed, 56 insertions(+), 217 deletions(-)

...

>  static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
>  								__u8 type)
>  {
> -	register struct hci_proto *hp;
> -	int mask = 0;
> -
> -	hp = hci_proto[HCI_PROTO_L2CAP];
> -	if (hp && hp->connect_ind)
> -		mask |= hp->connect_ind(hdev, bdaddr, type);
> +	if (type == ACL_LINK)
> +		return l2cap_connect_ind(hdev, bdaddr);
> +	else if (type == SCO_LINK || type == ESCO_LINK)
> +		return sco_connect_ind(hdev, bdaddr);

The patch looks OK though I think it is better to use switch instead of
"else if"s in your code.

Best regards 
Andrei Emeltchenko 

Re: [PATCH v2 2/2] Bluetooth: Make HCI call directly into SCO and L2CAP event functions

[Ulisses Furquim]

Hi Andrei,

On Wed, Dec 21, 2011 at 9:33 AM, Andrei Emeltchenko
<andrei.emeltchenko.news@gmail.com> wrote:
> Hi Ulisses,
>
> On Wed, Dec 21, 2011 at 01:32:10AM -0200, Ulisses Furquim wrote:
>> The struct hci_proto and all related register/unregister and dispatching
>> code was removed. HCI core code now call directly the SCO and L2CAP
>> event functions.
>>
>> Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
>> ---
>>  include/net/bluetooth/hci_core.h |  125 ++++++++++++-------------------------
>>  net/bluetooth/hci_core.c         |   59 +-----------------
>>  net/bluetooth/l2cap_core.c       |   51 ++-------------
>>  net/bluetooth/sco.c              |   38 +----------
>>  4 files changed, 56 insertions(+), 217 deletions(-)
>
> ...
>
>>  static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
>>                                                               __u8 type)
>>  {
>> -     register struct hci_proto *hp;
>> -     int mask = 0;
>> -
>> -     hp = hci_proto[HCI_PROTO_L2CAP];
>> -     if (hp && hp->connect_ind)
>> -             mask |= hp->connect_ind(hdev, bdaddr, type);
>> +     if (type == ACL_LINK)
>> +             return l2cap_connect_ind(hdev, bdaddr);
>> +     else if (type == SCO_LINK || type == ESCO_LINK)
>> +             return sco_connect_ind(hdev, bdaddr);
>
> The patch looks OK though I think it is better to use switch instead of
> "else if"s in your code.

Ok, Marcel also said that. It's been a while since I touch this code
and forgot the preferences. :-)

> Best regards
> Andrei Emeltchenko

Best regards,

-- 
Ulisses Furquim
ProFUSION embedded systems
http://profusion.mobi
Mobile: +55 19 9250 0942
Skype: ulissesffs