mac802154: allocation of ieee802154 device

An interface to allocate and register ieee802154 compatible device.
The allocated device has the following representation in memory:

	+-----------------------+
	| struct wpan_phy       |
	+-----------------------+
	| struct mac802154_priv |
	+-----------------------+
	| driver's private data |
	+-----------------------+

Used by device drivers to register new instance in the stack.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 63 insertions, 0 deletions

diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h
new file mode 100644
index 000000000000..980d0a24040e
--- /dev/null
+++ b/net/mac802154/mac802154.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2007-2012 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+#ifndef MAC802154_H
+#define MAC802154_H
+
+/* mac802154 device private data */
+struct mac802154_priv {
+        struct ieee802154_dev hw;
+        struct ieee802154_ops *ops;
+
+        /* ieee802154 phy */
+        struct wpan_phy *phy;
+
+        int open_count;
+
+        /* As in mac80211 slaves list is modified:
+         * 1) under the RTNL
+         * 2) protected by slaves_mtx;
+         * 3) in an RCU manner
+         *
+         * So atomic readers can use any of this protection methods.
+         */
+        struct list_head        slaves;
+        struct mutex            slaves_mtx;
+
+        /* This one is used for scanning and other jobs not to be interfered
+         * with serial driver.
+         */
+        struct workqueue_struct *dev_workqueue;
+
+        /* SoftMAC device is registered and running. One can add subinterfaces.
+         * This flag should be modified under slaves_mtx and RTNL, so you can
+         * read them using any of protection methods.
+         */
+        bool running;
+};
+
+#define MAC802154_DEVICE_STOPPED        0x00
+#define MAC802154_DEVICE_RUN            0x01
+
+#define mac802154_to_priv(_hw)  container_of(_hw, struct mac802154_priv, hw)
+
+#endif /* MAC802154_H */