Eric Lee / smarc-fsl-linux-kernel

22 Mar, 2014

1 commit

12 Jan, 2014

1 commit

09 Jan, 2014

1 commit

12 Oct, 2013

2 commits

  • 610bfc6bc   batman-adv: Receive fragmented packets and merge ... Browse Code »

    Fragments arriving at their destination are buffered for later merge.
    Merged packets are passed to the main receive function as had they never
    been fragmented.

    Fragments are forwarded without merging if the MTU of the outgoing
    interface is smaller than the size of the merged packet.

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

    Martin Hundebøll
     
  • f097e25db   batman-adv: Remove old fragmentation code ... Browse Code »

    Remove the existing fragmentation code before adding the new version
    and delete unicast.{h,c}.

    batadv_unicast_send_skb() is moved to send.c and renamed to
    batadv_send_skb_unicast().

    fragmentation entry in sysfs (bat_priv->fragmentation) is kept for use in
    the new fragmentation code.

    BATADV_UNICAST_FRAG packet type is renamed to BATADV_FRAG for use in the
    new fragmentation code.

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

    Martin Hundebøll
     

10 Oct, 2013

1 commit

29 May, 2013

1 commit

27 Mar, 2013

1 commit

14 Mar, 2013

1 commit

  • d353d8d4d   batman-adv: network coding - add the initial infrastructure code ... Browse Code »

    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 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 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

    Martin Hundebøll
     

08 Nov, 2012

2 commits

02 Jul, 2012

1 commit

  • b706b13b6   batman-adv: Remove bat_ prefix from bat_{debugfs, sysfs}.{c, h} ... Browse Code »

    The "bat_" prefix in the source files implementing the batman-adv sysfs and
    debugfs interface doesn't have a special meaning and are only used by these
    files and files that implement the actual B.A.T.M.A.N. path finding algorithm.

    The prefix is better suited to mark files that are used to implement the main
    part of the path finding. All other files should not use it and therefore gets
    renamed.

    Signed-off-by: Sven Eckelmann

    Sven Eckelmann
     

11 Apr, 2012

2 commits

  • 7a5cc2427   batman-adv: add bridge loop avoidance compile option ... Browse Code »

    The define CONFIG_BATMAN_ADV_BLA switches the bridge loop avoidance
    on - skip it, and the bridge loop avoidance is not compiled in.

    This is useful if binary size should be saved or the feature is
    not needed.

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

    Simon Wunderlich
     
  • 23721387c   batman-adv: add basic bridge loop avoidance code ... Browse Code »

    This second version of the bridge loop avoidance for batman-adv
    avoids loops between the mesh and a backbone (usually a LAN).

    By connecting multiple batman-adv mesh nodes to the same ethernet
    segment a loop can be created when the soft-interface is bridged
    into that ethernet segment. A simple visualization of the loop
    involving the most common case - a LAN as ethernet segment:

    node1 node2
    | |
    wifi wifi

    Packets from the LAN (e.g. ARP broadcasts) will circle forever from
    node1 or node2 over the mesh back into the LAN.

    With this patch, batman recognizes backbone gateways, nodes which are
    part of the mesh and backbone/LAN at the same time. Each backbone
    gateway "claims" clients from within the mesh to handle them
    exclusively. By restricting that only responsible backbone gateways
    may handle their claimed clients traffic, loops are effectively
    avoided.

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

    Simon Wunderlich
     

17 Feb, 2012

1 commit

08 Sep, 2011

2 commits

31 Jan, 2011

1 commit

17 Dec, 2010

1 commit

  • c6c8fea29   net: Add batman-adv meshing protocol ... Browse Code »

    B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing
    protocol for multi-hop ad-hoc mesh networks. The networks may be wired or
    wireless. See http://www.open-mesh.org/ for more information and user space
    tools.

    Signed-off-by: Sven Eckelmann
    Signed-off-by: David S. Miller

    Sven Eckelmann