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authorGrzegorz Kolodziejczyk <grzegorz.kolodziejczyk@tieto.com>2015-04-03 13:14:53 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-04-04 00:21:34 +0300
commit0477e2e868ceead7fd96218e1a062e01631ce717 (patch)
tree5cb7742c00b68c76b9f048d5d3fa7b9bb6c1f87b /net
parente0fdbab1699b89a9b0c192d4cb355f8ab43a8f17 (diff)
downloadlinux-0477e2e868ceead7fd96218e1a062e01631ce717.tar.xz
Bluetooth: bnep: Add support for get bnep features via ioctl
This is needed if user space wants to know supported bnep features by kernel, e.g. if kernel supports sending response to bnep setup control message. By now there is no possibility to know supported features by kernel in case of bnep. Ioctls allows only to add connection, delete connection, get connection list, get connection info. Adding connection if it's possible (establishing network device connection) is equivalent to starting bnep session. Bnep session handles data queue of transmit, receive messages over bnep channel. It means that if we add connection the received/transmitted data will be parsed immediately. In case of get bnep features we want to know before session start, if we should leave setup data on socket queue and let kernel to handle with it, or in case of no setup handling support, if we should pull this message and handle setup response within user space. Signed-off-by: Grzegorz Kolodziejczyk <grzegorz.kolodziejczyk@tieto.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/bnep/bnep.h1
-rw-r--r--net/bluetooth/bnep/sock.c7
2 files changed, 8 insertions, 0 deletions
diff --git a/net/bluetooth/bnep/bnep.h b/net/bluetooth/bnep/bnep.h
index 5a5b16f365e9..8709733c12a7 100644
--- a/net/bluetooth/bnep/bnep.h
+++ b/net/bluetooth/bnep/bnep.h
@@ -111,6 +111,7 @@ 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 5f051290daba..5766e6b66dbb 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -57,6 +57,7 @@ static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
struct bnep_conninfo ci;
struct socket *nsock;
void __user *argp = (void __user *)arg;
+ __u32 supp_feat = 0;
int err;
BT_DBG("cmd %x arg %lx", cmd, arg);
@@ -120,6 +121,12 @@ 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;
}