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authorFrederic Weisbecker <fweisbec@gmail.com>2009-09-23 17:08:43 -0400
committerFrederic Weisbecker <fweisbec@gmail.com>2009-09-23 17:08:43 -0400
commitd7a4b414eed51f1653bb05ebe84122bf9a7ae18b (patch)
treebd6603a0c27de4c138a1767871897e9cd3e1a1d2 /Documentation/networking/ieee802154.txt
parent1f0ab40976460bc4673fa204ce917a725185d8f2 (diff)
parenta724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff)
Merge commit 'linus/master' into tracing/kprobes
Conflicts: kernel/trace/Makefile kernel/trace/trace.h kernel/trace/trace_event_types.h kernel/trace/trace_export.c Merge reason: Sync with latest significant tracing core changes.
Diffstat (limited to 'Documentation/networking/ieee802154.txt')
-rw-r--r--Documentation/networking/ieee802154.txt20
1 files changed, 12 insertions, 8 deletions
diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt
index a0280ad2edc9..23c995e64032 100644
--- a/Documentation/networking/ieee802154.txt
+++ b/Documentation/networking/ieee802154.txt
@@ -22,7 +22,7 @@ int sd = socket(PF_IEEE802154, SOCK_DGRAM, 0);
22..... 22.....
23 23
24The address family, socket addresses etc. are defined in the 24The address family, socket addresses etc. are defined in the
25include/net/ieee802154/af_ieee802154.h header or in the special header 25include/net/af_ieee802154.h header or in the special header
26in our userspace package (see either linux-zigbee sourceforge download page 26in our userspace package (see either linux-zigbee sourceforge download page
27or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee). 27or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee).
28 28
@@ -33,7 +33,7 @@ MLME - MAC Level Management
33============================ 33============================
34 34
35Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands. 35Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands.
36See the include/net/ieee802154/nl802154.h header. Our userspace tools package 36See the include/net/nl802154.h header. Our userspace tools package
37(see above) provides CLI configuration utility for radio interfaces and simple 37(see above) provides CLI configuration utility for radio interfaces and simple
38coordinator for IEEE 802.15.4 networks as an example users of MLME protocol. 38coordinator for IEEE 802.15.4 networks as an example users of MLME protocol.
39 39
@@ -54,10 +54,14 @@ Those types of devices require different approach to be hooked into Linux kernel
54HardMAC 54HardMAC
55======= 55=======
56 56
57See the header include/net/ieee802154/netdevice.h. You have to implement Linux 57See the header include/net/ieee802154_netdev.h. You have to implement Linux
58net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family 58net_device, with .type = ARPHRD_IEEE802154. Data is exchanged with socket family
59code via plain sk_buffs. The control block of sk_buffs will contain additional 59code via plain sk_buffs. On skb reception skb->cb must contain additional
60info as described in the struct ieee802154_mac_cb. 60info as described in the struct ieee802154_mac_cb. During packet transmission
61the skb->cb is used to provide additional data to device's header_ops->create
62function. Be aware, that this data can be overriden later (when socket code
63submits skb to qdisc), so if you need something from that cb later, you should
64store info in the skb->data on your own.
61 65
62To hook the MLME interface you have to populate the ml_priv field of your 66To hook the MLME interface you have to populate the ml_priv field of your
63net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are 67net_device with a pointer to struct ieee802154_mlme_ops instance. All fields are
@@ -69,8 +73,8 @@ We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c
69SoftMAC 73SoftMAC
70======= 74=======
71 75
72We are going to provide intermediate layer impelementing IEEE 802.15.4 MAC 76We are going to provide intermediate layer implementing IEEE 802.15.4 MAC
73in software. This is currently WIP. 77in software. This is currently WIP.
74 78
75See header include/net/ieee802154/mac802154.h and several drivers in 79See header include/net/mac802154.h and several drivers in drivers/ieee802154/.
76drivers/ieee802154/ 80