2 Linux IEEE 802.15.4 implementation
8 The Linux-ZigBee project goal is to provide complete implementation
9 of IEEE 802.15.4 / ZigBee / 6LoWPAN protocols. IEEE 802.15.4 is a stack
10 of protocols for organizing Low-Rate Wireless Personal Area Networks.
12 Currently only IEEE 802.15.4 layer is implemented. We have choosen
13 to use plain Berkeley socket API, the generic Linux networking stack
14 to transfer IEEE 802.15.4 messages and a special protocol over genetlink
15 for configuration/management
21 int sd = socket(PF_IEEE802154, SOCK_DGRAM, 0);
24 The address family, socket addresses etc. are defined in the
25 include/net/ieee802154/af_ieee802154.h header or in the special header
26 in our userspace package (see either linux-zigbee sourceforge download page
27 or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee).
29 One can use SOCK_RAW for passing raw data towards device xmit function. YMMV.
32 MLME - MAC Level Management
33 ============================
35 Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands.
36 See the include/net/ieee802154/nl802154.h header. Our userspace tools package
37 (see above) provides CLI configuration utility for radio interfaces and simple
38 coordinator for IEEE 802.15.4 networks as an example users of MLME protocol.
44 Like with WiFi, there are several types of devices implementing IEEE 802.15.4.
45 1) 'HardMAC'. The MAC layer is implemented in the device itself, the device
46 exports MLME and data API.
47 2) 'SoftMAC' or just radio. These types of devices are just radio transceivers
48 possibly with some kinds of acceleration like automatic CRC computation and
49 comparation, automagic ACK handling, address matching, etc.
51 Those types of devices require different approach to be hooked into Linux kernel.
57 See the header include/net/ieee802154/netdevice.h. You have to implement Linux
58 net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family
59 code via plain sk_buffs. The control block of sk_buffs will contain additional
60 info as described in the struct ieee802154_mac_cb.
62 To hook the MLME interface you have to populate the ml_priv field of your
63 net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are
66 We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c
72 We are going to provide intermediate layer impelementing IEEE 802.15.4 MAC
73 in software. This is currently WIP.
75 See header include/net/ieee802154/mac802154.h and several drivers in