net: add IEEE 802.15.4 socket family implementation

Add support for communication over IEEE 802.15.4 networks. This implementation
is neither certified nor complete, but aims to that goal. This commit contains
only the socket interface for communication over IEEE 802.15.4 networks.
One can either send RAW datagrams or use SOCK_DGRAM to encapsulate data
inside normal IEEE 802.15.4 packets.

Configuration interface, drivers and software MAC 802.15.4 implementation will
follow.

Initial implementation was done by Maxim Gorbachyov, Maxim Osipov and Pavel
Smolensky as a research project at Siemens AG. Later the stack was heavily
reworked to better suit the linux networking model, and is now maitained
as an open project partially sponsored by Siemens.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 115 insertions, 0 deletions

diff --git a/include/net/ieee802154/netdevice.h b/include/net/ieee802154/netdevice.h
new file mode 100644
index 000000000000..e2506af3e7c8
--- /dev/null
+++ b/include/net/ieee802154/netdevice.h
@@ -0,0 +1,115 @@
+/*
+ * An interface between IEEE802.15.4 device and rest of the kernel.
+ *
+ * Copyright (C) 2007, 2008, 2009 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>
+ * Maxim Osipov <maxim.osipov@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ */
+
+#ifndef IEEE802154_NETDEVICE_H
+#define IEEE802154_NETDEVICE_H
+
+/*
+ * A control block of skb passed between the ARPHRD_IEEE802154 device
+ * and other stack parts.
+ */
+struct ieee802154_mac_cb {
+        u8 lqi;
+        struct ieee802154_addr sa;
+        struct ieee802154_addr da;
+        u8 flags;
+        u8 seq;
+};
+
+static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
+{
+        return (struct ieee802154_mac_cb *)skb->cb;
+}
+
+#define MAC_CB_FLAG_TYPEMASK            ((1 << 3) - 1)
+
+#define MAC_CB_FLAG_ACKREQ              (1 << 3)
+#define MAC_CB_FLAG_SECEN               (1 << 4)
+#define MAC_CB_FLAG_INTRAPAN            (1 << 5)
+
+static inline int mac_cb_is_ackreq(struct sk_buff *skb)
+{
+        return mac_cb(skb)->flags & MAC_CB_FLAG_ACKREQ;
+}
+
+static inline int mac_cb_is_secen(struct sk_buff *skb)
+{
+        return mac_cb(skb)->flags & MAC_CB_FLAG_SECEN;
+}
+
+static inline int mac_cb_is_intrapan(struct sk_buff *skb)
+{
+        return mac_cb(skb)->flags & MAC_CB_FLAG_INTRAPAN;
+}
+
+static inline int mac_cb_type(struct sk_buff *skb)
+{
+        return mac_cb(skb)->flags & MAC_CB_FLAG_TYPEMASK;
+}
+
+#define IEEE802154_MAC_SCAN_ED          0
+#define IEEE802154_MAC_SCAN_ACTIVE      1
+#define IEEE802154_MAC_SCAN_PASSIVE     2
+#define IEEE802154_MAC_SCAN_ORPHAN      3
+
+/*
+ * This should be located at net_device->ml_priv
+ */
+struct ieee802154_mlme_ops {
+        int (*assoc_req)(struct net_device *dev,
+                        struct ieee802154_addr *addr,
+                        u8 channel, u8 cap);
+        int (*assoc_resp)(struct net_device *dev,
+                        struct ieee802154_addr *addr,
+                        u16 short_addr, u8 status);
+        int (*disassoc_req)(struct net_device *dev,
+                        struct ieee802154_addr *addr,
+                        u8 reason);
+        int (*start_req)(struct net_device *dev,
+                        struct ieee802154_addr *addr,
+                        u8 channel, u8 bcn_ord, u8 sf_ord,
+                        u8 pan_coord, u8 blx, u8 coord_realign);
+        int (*scan_req)(struct net_device *dev,
+                        u8 type, u32 channels, u8 duration);
+
+        /*
+         * FIXME: these should become the part of PIB/MIB interface.
+         * However we still don't have IB interface of any kind
+         */
+        u16 (*get_pan_id)(struct net_device *dev);
+        u16 (*get_short_addr)(struct net_device *dev);
+        u8 (*get_dsn)(struct net_device *dev);
+        u8 (*get_bsn)(struct net_device *dev);
+};
+
+static inline struct ieee802154_mlme_ops *ieee802154_mlme_ops(
+                struct net_device *dev)
+{
+        return dev->ml_priv;
+}
+
+#endif
+
+