mac80211: add support for radiotap timestamp field

Use the existing device timestamp from the RX status information
to add support for the new radiotap timestamp field. Currently
only 32-bit counters are supported, but we also add the radiotap
mactime where applicable. This new field allows more flexibility
in where the timestamp is taken etc. The non-timestamp data in
the field is taken from a new field in the hw struct.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2016-08-29 23:25:17 +03:00
parent 42bd20d998
commit 99ee7cae3b
4 changed files with 66 additions and 0 deletions

View file

@ -2145,6 +2145,14 @@ enum ieee80211_hw_flags {
* the default is _GI | _BANDWIDTH.
* Use the %IEEE80211_RADIOTAP_VHT_KNOWN_* values.
*
* @radiotap_timestamp: Information for the radiotap timestamp field; if the
* 'units_pos' member is set to a non-negative value it must be set to
* a combination of a IEEE80211_RADIOTAP_TIMESTAMP_UNIT_* and a
* IEEE80211_RADIOTAP_TIMESTAMP_SPOS_* value, and then the timestamp
* field will be added and populated from the &struct ieee80211_rx_status
* device_timestamp. If the 'accuracy' member is non-negative, it's put
* into the accuracy radiotap field and the accuracy known flag is set.
*
* @netdev_features: netdev features to be set in each netdev created
* from this HW. Note that not all features are usable with mac80211,
* other features will be rejected during HW registration.
@ -2188,6 +2196,10 @@ struct ieee80211_hw {
u8 offchannel_tx_hw_queue;
u8 radiotap_mcs_details;
u16 radiotap_vht_details;
struct {
int units_pos;
s16 accuracy;
} radiotap_timestamp;
netdev_features_t netdev_features;
u8 uapsd_queues;
u8 uapsd_max_sp_len;