Eric Lee / smarc-fsl-linux-kernel

26 Apr, 2016

1 commit

25 Oct, 2014

1 commit

17 May, 2014

1 commit

  • 3e9c156e2   ieee802154: add netlink interfaces for llsec ... Browse Code »

    This patch adds user-visible interfaces for the llsec infrastructure.
    For the added methods, the only major difference between all add/remove
    implementation lies in how the specific object is parsed, and for dump
    requests, how objects are written into netlink messages.

    To save on boilerplate code, table dumps are routed through a helper
    function that handles netlink dump state, leaving the actual dumping
    code to care only about iterating over the table to be dumped and
    filling netlink messages. For add/remove methods, the boilerplate
    required to work is not quite as large, but still enough to also move
    into a local helper.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     

02 Apr, 2014

1 commit

  • e462ded69   mac802154: make csma/cca parameters per-wpan ... Browse Code »

    Commit 9b2777d6089bcd (ieee802154: add TX power control to wpan_phy)
    and following erroneously added CSMA and CCA parameters for 802.15.4
    devices as PHY parameters, while they are actually MAC parameters and
    can differ for any two WPAN instances. Since it is now sensible to have
    multiple WPAN devices with differing CSMA/CCA parameters, make these
    parameters MAC parameters instead.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     

18 Feb, 2014

5 commits

  • 4244db1b0   ieee802154: add netlink APIs for smartMAC configuration ... Browse Code »

    Introduce new netlink attributes for SET_PHY_ATTRS:
    * CSMA minimal backoff exponent
    * CSMA maximal backoff exponent
    * CSMA retry limit
    * frame retransmission limit

    The CSMA attributes shall correspond to minBE, maxBE and maxCSMABackoffs of
    802.15.4, respectively. The frame retransmission shall correspond to
    maxFrameRetries of 802.15.4, unless given as -1: then the old behaviour
    of the stack shall apply. For RF2xy, the old behaviour is to not do
    channel sensing at all and simply send *right now*, which is not
    intended behaviour for most applications and actually prohibited for
    some channel/page combinations.

    For all values except frame retransmission limit, the defaults of
    802.15.4 apply. Frame retransmission limits are set to -1 to indicate
    backward-compatible behaviour.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     
  • 6ca001978   ieee802154: add support for setting CCA energy detection levels ... Browse Code »

    Since three of the four clear channel assesment modes make use of energy
    detection, provide an API to set the energy detection threshold.
    Driver support for this is available in at86rf230 for the RF212 chips.
    Since for these chips the minimal energy detection threshold depends on
    page and channel used, add a field to struct at86rf230_local that stores
    the minimal threshold. Actual ED thresholds are configured as offsets
    from this value.

    For RF212, setting the ED threshold will not work before a channel/page
    has been set due to the dependency of energy detection in the chip and
    the actual channel/page selected.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     
  • ba08fea53   ieee802154: add support for CCA mode in wpan phys ... Browse Code »

    The standard describes four modes of clear channel assesment: "energy
    above threshold", "carrier found", and the logical and/or of these two.
    Support for CCA mode setting is included in the at86rf230 driver,
    predicated for RF212 chips.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     
  • 84dda3c64   ieee802154: add support for listen-before-talk in wpan_phy ... Browse Code »

    Listen-before-talk is an alternative to CSMA in uncoordinated networks
    and prescribed by european regulations if one wants to have a device
    with radio duty cycles above 10% (or less in some bands). Add a phy
    property to enable/disable LBT in the phy, including support in the
    at86rf230 driver for RF212 chips.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     
  • 9b2777d60   ieee802154: add TX power control to wpan_phy ... Browse Code »

    Replace the current u8 transmit_power in wpan_phy with s8 transmit_power.
    The u8 field contained the actual tx power and a tolerance field,
    which no physical radio every used. Adjust sysfs entries to keep
    compatibility with userspace, give tolerances of +-1dB statically there.

    This patch only adds support for this in the at86rf230 driver and the
    RF212 chip. Configuration calculation for RF212 is also somewhat basic,
    but does the job - the RF212 datasheet gives a large table with
    suggested values for combinations of TX power and page/channel, if this
    does not work well, we might have to copy the whole table.

    Signed-off-by: Phoebe Buckheister
    Signed-off-by: David S. Miller

    Phoebe Buckheister
     

27 Jun, 2012

1 commit

  • 32bad7e30   mac802154: add wpan device-class support ... Browse Code »

    Every real 802.15.4 transceiver, which works with software MAC layer,
    can be classified as a wpan device in this stack. So the wpan device
    implementation provides missing link in datapath between the device
    drivers and the Linux network queue.

    According to the IEEE 802.15.4 standard each packet can be one of the
    following types:
    - beacon
    - MAC layer command
    - ACK
    - data

    This patch adds support for the data packet-type only, but this is
    enough to perform data transmission and receiving over radio.

    Signed-off-by: Alexander Smirnov
    Signed-off-by: David S. Miller

    alex.bluesman.smirnov@gmail.com
     

17 May, 2012

2 commits

06 Nov, 2009

2 commits

20 Aug, 2009

1 commit

13 Aug, 2009

2 commits

09 Jun, 2009

1 commit