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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-06 17:22:09 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-06 17:22:09 -0800 |
commit | 9753dfe19a85e7e45a34a56f4cb2048bb4f50e27 (patch) | |
tree | c017a1b4a70b8447c71b01d8b320e071546b5c9d /Documentation/networking/ieee802154.txt | |
parent | edf7c8148ec40c0fd27c0ef3f688defcc65e3913 (diff) | |
parent | 9f42f126154786e6e76df513004800c8c633f020 (diff) | |
download | blackbird-op-linux-9753dfe19a85e7e45a34a56f4cb2048bb4f50e27.tar.gz blackbird-op-linux-9753dfe19a85e7e45a34a56f4cb2048bb4f50e27.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1958 commits)
net: pack skb_shared_info more efficiently
net_sched: red: split red_parms into parms and vars
net_sched: sfq: extend limits
cnic: Improve error recovery on bnx2x devices
cnic: Re-init dev->stats_addr after chip reset
net_sched: Bug in netem reordering
bna: fix sparse warnings/errors
bna: make ethtool_ops and strings const
xgmac: cleanups
net: make ethtool_ops const
vmxnet3" make ethtool ops const
xen-netback: make ops structs const
virtio_net: Pass gfp flags when allocating rx buffers.
ixgbe: FCoE: Add support for ndo_get_fcoe_hbainfo() call
netdev: FCoE: Add new ndo_get_fcoe_hbainfo() call
igb: reset PHY after recovering from PHY power down
igb: add basic runtime PM support
igb: Add support for byte queue limits.
e1000: cleanup CE4100 MDIO registers access
e1000: unmap ce4100_gbe_mdio_base_virt in e1000_remove
...
Diffstat (limited to 'Documentation/networking/ieee802154.txt')
-rw-r--r-- | Documentation/networking/ieee802154.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/networking/ieee802154.txt b/Documentation/networking/ieee802154.txt index f41ea2405220..1dc1c24a7547 100644 --- a/Documentation/networking/ieee802154.txt +++ b/Documentation/networking/ieee802154.txt @@ -78,3 +78,30 @@ in software. This is currently WIP. See header include/net/mac802154.h and several drivers in drivers/ieee802154/. +6LoWPAN Linux implementation +============================ + +The IEEE 802.15.4 standard specifies an MTU of 128 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, +taking into account limited bandwidth, memory, or energy resources that are +expected in applications such as wireless Sensor Networks. [RFC4944] defines +a Mesh Addressing header to support sub-IP forwarding, a Fragmentation header +to support the IPv6 minimum MTU requirement [RFC2460], and stateless header +compression for IPv6 datagrams (LOWPAN_HC1 and LOWPAN_HC2) to reduce the +relatively large IPv6 and UDP headers down to (in the best case) several bytes. + +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.* + +To setup 6lowpan interface you need (busybox release > 1.17.0): +1. Add IEEE802.15.4 interface and initialize PANid; +2. Add 6lowpan interface by command like: + # ip link add link wpan0 name lowpan0 type lowpan +3. Set MAC (if needs): + # ip link set lowpan0 address de:ad:be:ef:ca:fe:ba:be +4. Bring up 'lowpan0' interface |