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>
diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index 15fe6bc..8ca3d04 100644
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -131,6 +131,14 @@
* Sets the CCA energy detection threshold in dBm. Called with pib_lock
* held.
* Returns either zero, or negative errno.
+ *
+ * set_csma_params
+ * Sets the CSMA parameter set for the PHY. Called with pib_lock held.
+ * Returns either zero, or negative errno.
+ *
+ * set_frame_retries
+ * Sets the retransmission attempt limit. Called with pib_lock held.
+ * Returns either zero, or negative errno.
*/
struct ieee802154_ops {
struct module *owner;
@@ -152,6 +160,10 @@
int (*set_cca_mode)(struct ieee802154_dev *dev, u8 mode);
int (*set_cca_ed_level)(struct ieee802154_dev *dev,
s32 level);
+ int (*set_csma_params)(struct ieee802154_dev *dev,
+ u8 min_be, u8 max_be, u8 retries);
+ int (*set_frame_retries)(struct ieee802154_dev *dev,
+ s8 retries);
};
/* Basic interface to register ieee802154 device */
