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authorLennert Buytenhek <buytenh@wantstofly.org>2015-05-25 15:38:29 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-05-26 20:25:58 +0200
commitb251d4de671ca0623d19b88a8af7f038499db631 (patch)
treee0501c5ff9139bf3b2923ab50bde42930d6413aa /Documentation/networking
parentieee802154 socket: Return EMSGSIZE from raw_sendmsg() if packet too big. (diff)
downloadlinux-dev-b251d4de671ca0623d19b88a8af7f038499db631.tar.xz
linux-dev-b251d4de671ca0623d19b88a8af7f038499db631.zip
Documentation/networking/ieee802154.txt: fix various inaccuracies.
* Update the linux-zigbee git:// repository URL. * Remove the MLME section as the current kernel does not provide a full 802.15.4 MLME implementation. * The hardmac example driver 'fakehard' was removed some time ago. * The IEEE 802.15.4 device drivers live in drivers/net/ieee802154/, not in drivers/ieee802154/. * The IEEE 802.15.4 MTU is 127 bytes, not 128 bytes. * Some of the 6LoWPAN code lives in net/6lowpan/. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/ieee802154.txt32
1 files changed, 11 insertions, 21 deletions
diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt
index 22bbc7225f8e..1700756af057 100644
--- a/Documentation/networking/ieee802154.txt
+++ b/Documentation/networking/ieee802154.txt
@@ -30,8 +30,8 @@ int sd = socket(PF_IEEE802154, SOCK_DGRAM, 0);
The address family, socket addresses etc. are defined in the
include/net/af_ieee802154.h header or in the special header
-in our userspace package (see either linux-zigbee sourceforge download page
-or git tree at git://linux-zigbee.git.sourceforge.net/gitroot/linux-zigbee).
+in the userspace package (see either http://wpan.cakelab.org/ or the
+git tree at https://github.com/linux-wpan/wpan-tools).
One can use SOCK_RAW for passing raw data towards device xmit function. YMMV.
@@ -49,15 +49,6 @@ Like with WiFi, there are several types of devices implementing IEEE 802.15.4.
Those types of devices require different approach to be hooked into Linux kernel.
-MLME - MAC Level Management
-============================
-
-Most of IEEE 802.15.4 MLME interfaces are directly mapped on netlink commands.
-See the include/net/nl802154.h header. Our userspace tools package
-(see above) provides CLI configuration utility for radio interfaces and simple
-coordinator for IEEE 802.15.4 networks as an example users of MLME protocol.
-
-
HardMAC
=======
@@ -75,8 +66,6 @@ net_device with a pointer to struct ieee802154_mlme_ops instance. The fields
assoc_req, assoc_resp, disassoc_req, start_req, and scan_req are optional.
All other fields are required.
-We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c
-
SoftMAC
=======
@@ -89,7 +78,8 @@ stack interface for network sniffers (e.g. WireShark).
This layer is going to be extended soon.
-See header include/net/mac802154.h and several drivers in drivers/ieee802154/.
+See header include/net/mac802154.h and several drivers in
+drivers/net/ieee802154/.
Device drivers API
@@ -114,18 +104,17 @@ Moreover IEEE 802.15.4 device operations structure should be filled.
Fake drivers
============
-In addition there are two drivers available which simulate real devices with
-HardMAC (fakehard) and SoftMAC (fakelb - IEEE 802.15.4 loopback driver)
-interfaces. This option provides possibility to test and debug stack without
-usage of real hardware.
+In addition there is a driver available which simulates a real device with
+SoftMAC (fakelb - IEEE 802.15.4 loopback driver) interface. This option
+provides possibility to test and debug stack without usage of real hardware.
-See sources in drivers/ieee802154 folder for more details.
+See sources in drivers/net/ieee802154 folder for more details.
6LoWPAN Linux implementation
============================
-The IEEE 802.15.4 standard specifies an MTU of 128 bytes, yielding about 80
+The IEEE 802.15.4 standard specifies an MTU of 127 bytes, yielding about 80
octets of actual MAC payload once security is turned on, on a wireless link
with a link throughput of 250 kbps or less. The 6LoWPAN adaptation format
[RFC4944] was specified to carry IPv6 datagrams over such constrained links,
@@ -140,7 +129,8 @@ In Semptember 2011 the standard update was published - [RFC6282].
It deprecates HC1 and HC2 compression and defines IPHC encoding format which is
used in this Linux implementation.
-All the code related to 6lowpan you may find in files: net/ieee802154/6lowpan.*
+All the code related to 6lowpan you may find in files: net/6lowpan/*
+and net/ieee802154/6lowpan/*
To setup 6lowpan interface you need (busybox release > 1.17.0):
1. Add IEEE802.15.4 interface and initialize PANid;