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ieee802154: add netlink APIs for smartMAC configuration

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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>
This commit is contained in:
Phoebe Buckheister
2014-02-17 11:34:14 +01:00
committed by David S. Miller
parent 7dcbd22a97
commit 4244db1b0b
7 changed files with 125 additions and 2 deletions
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6
net/ieee802154/wpan-class.c
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@@ -169,6 +169,12 @@ struct wpan_phy *wpan_phy_alloc(size_t priv_size)
phy->current_channel = -1; /* not initialised */
phy->current_page = 0; /* for compatibility */
/* defaults per 802.15.4-2011 */
phy->min_be = 3;
phy->max_be = 5;
phy->csma_retries = 4;
phy->frame_retries = -1; /* for compatibility, actual default is 3 */
return phy;
out: