Eric Lee / smarc-fsl-linux-kernel

26 Jan, 2017

1 commit

09 Aug, 2016

2 commits

  • d34f05507   batman-adv: netlink: add translation table query ... Browse Code »

    This adds the commands BATADV_CMD_GET_TRANSTABLE_LOCAL and
    BATADV_CMD_GET_TRANSTABLE_GLOBAL, which correspond to the transtable_local
    and transtable_global debugfs files.

    The batadv_tt_client_flags enum is moved to the UAPI to expose it as part
    of the netlink API.

    Signed-off-by: Matthias Schiffer
    Signed-off-by: Andrew Lunn
    [sven.eckelmann@open-mesh.com: add policy for attributes, fix includes]
    Signed-off-by: Sven Eckelmann
    [sw@simonwunderlich.de: fix VID attributes content]
    Signed-off-by: Simon Wunderlich
    Signed-off-by: Marek Lindner

    Matthias Schiffer
     
  • 86452f81d   batman-adv: use kmem_cache for translation table ... Browse Code »

    The translation table (global, local) is usually the part of batman-adv
    which has the most dynamical allocated objects. Most of them
    (tt_local_entry, tt_global_entry, tt_orig_list_entry, tt_change_node,
    tt_req_node, tt_roam_node) are equally sized. So it makes sense to have
    them allocated from a kmem_cache for each type.

    This approach allowed a small wireless router (TP-Link TL-841NDv8; SLUB
    allocator) to store 34% more translation table entries compared to the
    current implementation.

    [1] https://open-mesh.org/projects/batman-adv/wiki/Kmalloc-kmem-cache-tests

    Reported-by: Linus Lüssing
    Signed-off-by: Sven Eckelmann
    Signed-off-by: Marek Lindner
    Signed-off-by: Simon Wunderlich

    Sven Eckelmann
     

02 Feb, 2016

1 commit

25 Aug, 2015

2 commits

07 Jun, 2015

1 commit

  • 1e2c2a4fe   batman-adv: Add required includes to all files ... Browse Code »

    The header files could not be build indepdent from each other. This is
    happened because headers didn't include the files for things they've used.
    This was problematic because the success of a build depended on the
    knowledge about the right order of local includes.

    Also source files were not including everything they've used explicitly.
    Instead they required that transitive includes are always stable. This is
    problematic because some transitive includes are not obvious, depend on
    config settings and may not be stable in the future.

    The order for include blocks are:

    * primary headers (main.h and the *.h file of a *.c file)
    * global linux headers
    * required local headers
    * extra forward declarations for pointers in function/struct declarations

    The only exceptions are linux/bitops.h and linux/if_ether.h in packet.h.
    This header file is shared with userspace applications like batctl and must
    therefore build together with userspace applications. The header
    linux/bitops.h is not part of the uapi headers and linux/if_ether.h
    conflicts with the musl implementation of netinet/if_ether.h. The
    maintainers rejected the use of __KERNEL__ preprocessor checks and thus
    these two headers are only in main.h. All files using packet.h first have
    to include main.h to work correctly.

    Reported-by: Markus Pargmann
    Signed-off-by: Sven Eckelmann
    Signed-off-by: Marek Lindner

    Sven Eckelmann
     

29 May, 2015

1 commit

22 Mar, 2014

1 commit

  • 1d8ab8d3c   batman-adv: Modified forwarding behaviour for multicast packets ... Browse Code »

    With this patch a multicast packet is not always simply flooded anymore,
    the behaviour for the following cases is changed to reduce
    unnecessary overhead:

    If all nodes within the horizon of a certain node have signalized
    multicast listener announcement capability then an IPv6 multicast packet
    with a destination of IPv6 link-local scope (excluding ff02::1) coming
    from the upstream of this node...

    * ...is dropped if there is no according multicast listener in the
    translation table,
    * ...is forwarded via unicast if there is a single node with interested
    multicast listeners
    * ...and otherwise still gets flooded.

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

    Linus Lüssing
     

12 Jan, 2014

1 commit

09 Jan, 2014

3 commits

  • 42cb0bef0   batman-adv: set the isolation mark in the skb if needed ... Browse Code »

    If a broadcast packet is coming from a client marked as
    isolated, then mark the skb using the isolation mark so
    that netfilter (or any other application) can recognise
    them.

    The mark is written in the skb based on the mask value:
    only bits set in the mask are substitued by those in the
    mark value

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

    Antonio Quartulli
     
  • 9464d0718   batman-adv: mark a local client as isolated when needed ... Browse Code »

    A client sending packets which mark matches the value
    configured via sysfs has to be identified as isolated using
    the TT_CLIENT_ISOLA flag.

    The match is mask based, meaning that only bits set in the
    mask are compared with those in the mark value.

    If the configured mask is equal to 0 no operation is
    performed.

    Such flag is then advertised within the classic client
    announcement mechanism.

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

    Antonio Quartulli
     
  • ebf38fb7a   batman-adv: remove FSF address from GPL disclaimer ... Browse Code »

    As suggested by checkpatch, remove all the references to the
    FSF address since the kernel already has one reference in
    its documentation.

    In this way it is easier to update it in case of future
    changes.

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

    Antonio Quartulli
     

23 Oct, 2013

1 commit

  • a19d3d85e   batman-adv: limit local translation table max size ... Browse Code »

    The local translation table size is limited by what can be
    transferred from one node to another via a full table request.

    The number of entries fitting into a full table request depend
    on whether the fragmentation is enabled or not. Therefore this
    patch introduces a max table size check and refuses to add
    more local clients when that size is reached. Moreover, if the
    max full table packet size changes (MTU change or fragmentation
    is disabled) the local table is downsized instantaneously.

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

    Marek Lindner
     

20 Oct, 2013

1 commit

  • 95fb130d6   batman-adv: make the TT global purge routine VLAN specific ... Browse Code »

    Instead of unconditionally removing all the TT entries
    served by a given originator, make tt_global_orig_del()
    remove only entries matching a given VLAN identifier
    provided as argument.

    If such argument is negative all the global entries
    served by the originator are removed.

    This change is used into the BLA code to purge entries
    served by a newly discovered Backbone node, but limiting
    the operation only to those connected to the VLAN where the
    backbone has been discovered.

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

    Antonio Quartulli
     

19 Oct, 2013

2 commits

12 Oct, 2013

2 commits

10 Oct, 2013

2 commits

29 May, 2013

1 commit

19 Jan, 2013

1 commit

15 Nov, 2012

1 commit

  • 7c1fd91da   batman-adv: substitute tt_poss_change with a per-tt_entry flag ... Browse Code »

    tt_poss_change is a node-wide flag which tells whether the node is in a roaming
    state (a client recently moved to/away from it) in order to let it apply special
    re-routing rules. However this flag does not give a clear idea of the current
    state because it is not possible to understand *which client* is actually
    involved in the roaming. For this reason a better approach has been chosen:
    instead of using a node-wide variable, the roaming state is now given by a
    per-tt_entry ROAM flag which, in case of packet coming through the node, tells
    the node whether the real destination is in roaming state or not.

    With this flag change, batadv_check_unicast_ttvn() has also been rearranged in
    order to better fit the new re-routing logic and to be much more readable.

    Signed-off-by: Antonio Quartulli

    Antonio Quartulli
     

29 Oct, 2012

1 commit

  • 7f91d06c9   batman-adv: pass the WIFI flag from the local to global entry ... Browse Code »

    in case of client roaming a new global entry is added while a corresponding
    local one is still present. In this case the node can safely pass the WIFI flag
    from the local to the global entry.

    This change is required to let the AP-isolation correctly working in case of
    roaming: if a generic WIFI client C roams from node A to B, A adds a global
    entry for C without adding any WIFI flag. The latter will be set only later,
    once A has received C's advertisement from B. In this time period the
    AP-Isolation (if enabled) would not correctly work since C is not marked as
    WIFI, so allowing it to communicate with other WIFI clients.

    Signed-off-by: Antonio Quartulli

    Antonio Quartulli
     

23 Aug, 2012

1 commit

  • 30cfd02b6   batman-adv: detect not yet announced clients ... Browse Code »

    With the current TT mechanism a new client joining the network is not
    immediately able to communicate with other hosts because its MAC address has not
    been announced yet. This situation holds until the first OGM containing its
    joining event will be spread over the mesh network.

    This behaviour can be acceptable in networks where the originator interval is a
    small value (e.g. 1sec) but if that value is set to an higher time (e.g. 5secs)
    the client could suffer from several malfunctions like DHCP client timeouts,
    etc.

    This patch adds an early detection mechanism that makes nodes in the network
    able to recognise "not yet announced clients" by means of the broadcast packets
    they emitted on connection (e.g. ARP or DHCP request). The added client will
    then be confirmed upon receiving the OGM claiming it or purged if such OGM
    is not received within a fixed amount of time.

    Signed-off-by: Antonio Quartulli

    Antonio Quartulli
     

02 Jul, 2012

2 commits

28 Jun, 2012

1 commit

21 Jun, 2012

2 commits

19 Jun, 2012

1 commit

14 May, 2012

1 commit

  • 3275e7cc8   batman-adv: improve unicast packet (re)routing ... Browse Code »

    In case of a client X roaming from a generic node A to another node B, it is
    possible that a third node C gets A's OGM but not B's. At this point in time, if
    C wants to send data to X it will send a unicast packet destined to A. The
    packet header will contain A's last ttvn (C got A's OGM and so it knows it).

    The packet will travel towards A without being intercepted because the ttvn
    contained in its header is the newest for A.

    Once A will receive the packet, A's state will not report to be in a "roaming
    phase" (because, after a roaming, once A sends out its OGM, all the changes are
    committed and the node is considered not to be in the roaming state anymore)
    and it will match the ttvn carried by the packet. Therefore there is no reason
    for A to try to alter the packet's route, thus dropping the packet because the
    destination client is not there anymore.

    However, C is well aware that it's routing information towards the client X is
    outdated as it received an OGM from A saying that the client roamed away.
    Thanks to this detail, this patch introduces a small change in behaviour: as
    long as C is in the state of not knowing the new location of client X it will
    forward the traffic to its last known location using ttvn-1 of the destination.
    By using an older ttvn node A will be forced to re-route the packet.
    Intermediate nodes are also allowed to update the packet's destination as long
    as they have the information about the client's new location.

    Signed-off-by: Antonio Quartulli

    Antonio Quartulli
     

11 May, 2012

1 commit

11 Apr, 2012

1 commit

17 Feb, 2012

1 commit

22 Aug, 2011

4 commits