linux-toradex.git/Documentation/ABI/testing/sysfs-class-net-mesh, branch v3.13

batman-adv: make the AP isolation attribute VLAN specific

2013-10-19T15:28:47+00:00

AP isolation has to be enabled on one VLAN interface only.
This patch moves the AP isolation attribute to the per-vlan
interface attribute set, enabling it to have a different
value depending on the selected vlan.

Signed-off-by: Antonio Quartulli 
Signed-off-by: Marek Lindner

batman-adv: update email address for Marek Lindner

2013-10-19T12:53:48+00:00

Signed-off-by: Marek Lindner 
Signed-off-by: Antonio Quartulli

batman-adv: update email address for Antonio Quartulli

2013-10-19T12:53:47+00:00

Signed-off-by: Antonio Quartulli 
Signed-off-by: Marek Lindner

batman-adv: update email address for Simon Wunderlich

2013-10-19T12:53:41+00:00

My university will stop email service for alumni in january 2014, please
use my new e-mail address instead.

Signed-off-by: Simon Wunderlich 
Signed-off-by: Marek Lindner

batman-adv: remove vis functionality

2013-10-09T19:22:32+00:00

This is replaced by a userspace program, we don't need this
functionality to bloat the kernel.

Signed-off-by: Simon Wunderlich 
Signed-off-by: Marek Lindner 
Signed-off-by: Antonio Quartulli

batman-adv: network coding - add the initial infrastructure code

2013-03-13T21:53:48+00:00

Network coding exploits the 802.11 shared medium to allow multiple
packets to be sent in a single transmission. In brief, a relay can XOR
two packets, and send the coded packet to two destinations. The
receivers can decode one of the original packets by XOR'ing the coded
packet with the other original packet. This will lead to increased
throughput in topologies where two packets cross one relay.

In a simple topology with three nodes, it takes four transmissions
without network coding to get one packet from Node A to Node B and one
from Node B to Node A:

 1.  Node A  ---- p1 --->  Node R                Node B
 2.  Node A                Node R  <--- p2 ----  Node B
 3.  Node A  <--- p2 ----  Node R                Node B
 4.  Node A                Node R  ---- p1 --->  Node B

With network coding, the relay only needs one transmission, which saves
us one slot of valuable airtime:

 1.  Node A  ---- p1 --->  Node R                Node B
 2.  Node A                Node R  <--- p2 ----  Node B
 3.  Node A  <- p1 x p2 -  Node R  - p1 x p2 ->  Node B

The same principle holds for a topology including five nodes. Here the
packets from Node A and Node B are overheard by Node C and Node D,
respectively. This allows Node R to send a network coded packet to save
one transmission:

   Node A                  Node B

    |     \              /    |
    |      p1          p2     |
    |       \          /      |
    p1       > Node R <       p2
    |                         |
    |         /      \        |
    |    p1 x p2    p1 x p2   |
    v       /          \      v
           /            \
   Node C <              > Node D

More information is available on the open-mesh.org wiki[1].

This patch adds the initial code to support network coding in
batman-adv. It sets up a worker thread to do house keeping and adds a
sysfs file to enable/disable network coding. The feature is disabled by
default, as it requires a wifi-driver with working promiscuous mode, and
also because it adds a small delay at each hop.

[1] http://www.open-mesh.org/projects/batman-adv/wiki/Catwoman

Signed-off-by: Martin Hundebøll 
Signed-off-by: Marek Lindner 
Signed-off-by: Antonio Quartulli

batman-adv: sysfs documentation should keep alphabetical order

2012-11-21T11:34:50+00:00

Signed-off-by: Marek Lindner 
Signed-off-by: Antonio Quartulli

batman-adv: make bridge loop avoidance switchable

2012-04-11T12:28:59+00:00

Signed-off-by: Simon Wunderlich 
Signed-off-by: Antonio Quartulli

batman-adv: export used routing algorithm via sysfs

2012-02-16T18:50:20+00:00

Signed-off-by: Marek Lindner

batman-adv: implement AP-isolation on the receiver side

2011-08-22T13:16:20+00:00

When a node receives a unicast packet it checks if the source and the
destination client can communicate or not due to the AP isolation

Signed-off-by: Antonio Quartulli 
Signed-off-by: Marek Lindner