[PATCH v2 2/3] Bluetooth: bnep: Add support for get bnep features via ioctl

[Grzegorz Kolodziejczyk <grzegorz.kolodziejczyk@xxxxxxxxx>]

This is needed if user space wants to know supported bnep features
by kernel, eg. if kernel supports sending response to bnep setup
control message.

Signed-off-by: Grzegorz Kolodziejczyk <grzegorz.kolodziejczyk@xxxxxxxxx>
---
 fs/compat_ioctl.c         | 1 +
 net/bluetooth/bnep/bnep.h | 4 ++++
 net/bluetooth/bnep/sock.c | 8 ++++++++
 3 files changed, 13 insertions(+)

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index afec645..19fb0c8 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -570,6 +570,7 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, void __user *argp)
 #define BNEPCONNDEL	_IOW('B', 201, int)
 #define BNEPGETCONNLIST	_IOR('B', 210, int)
 #define BNEPGETCONNINFO	_IOR('B', 211, int)
+#define BNEPGETSUPPFEAT	_IOR('B', 212, int)
 
 #define CMTPCONNADD	_IOW('C', 200, int)
 #define CMTPCONNDEL	_IOW('C', 201, int)
diff --git a/net/bluetooth/bnep/bnep.h b/net/bluetooth/bnep/bnep.h
index 5a5b16f..d19831e 100644
--- a/net/bluetooth/bnep/bnep.h
+++ b/net/bluetooth/bnep/bnep.h
@@ -80,6 +80,9 @@
 #define BNEP_TYPE_MASK	0x7f
 #define BNEP_EXT_HEADER	0x80
 
+/* Features */
+#define BNEP_SETUP_RSP_FEAT	0x01
+
 struct bnep_setup_conn_req {
 	__u8 type;
 	__u8 ctrl;
@@ -111,6 +114,7 @@ struct bnep_ext_hdr {
 #define BNEPCONNDEL	_IOW('B', 201, int)
 #define BNEPGETCONNLIST	_IOR('B', 210, int)
 #define BNEPGETCONNINFO	_IOR('B', 211, int)
+#define BNEPGETSUPPFEAT	_IOR('B', 212, int)
 
 struct bnep_connadd_req {
 	int   sock;		/* Connected socket */
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index 5f05129..fea611c 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -29,6 +29,8 @@
 
 #include "bnep.h"
 
+static const __u8 supp_feat = BNEP_SETUP_RSP_FEAT;
+
 static struct bt_sock_list bnep_sk_list = {
 	.lock = __RW_LOCK_UNLOCKED(bnep_sk_list.lock)
 };
@@ -120,6 +122,12 @@ static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
 
 		return err;
 
+	case BNEPGETSUPPFEAT:
+		if (copy_to_user(argp, &supp_feat, sizeof(supp_feat)))
+			return -EFAULT;
+
+		return 0;
+
 	default:
 		return -EINVAL;
 	}
-- 
2.1.0

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