ieee802154: add netlink APIs for smartMAC configuration

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 <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/nl802154.h b/include/linux/nl802154.h
index 0594a0ae71ba..e110b8c266f5 100644
--- a/include/linux/nl802154.h
+++ b/include/linux/nl802154.h
@@ -74,6 +74,11 @@ enum {
         IEEE802154_ATTR_LBT_ENABLED,
         IEEE802154_ATTR_CCA_MODE,
         IEEE802154_ATTR_CCA_ED_LEVEL,
+        IEEE802154_ATTR_CSMA_RETRIES,
+        IEEE802154_ATTR_CSMA_MIN_BE,
+        IEEE802154_ATTR_CSMA_MAX_BE,
+
+        IEEE802154_ATTR_FRAME_RETRIES,
 
         __IEEE802154_ATTR_MAX,
 };