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wifi: nl80211: Add POWERED_ADDR_CHANGE feature

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Add a new extended feature bit signifying that the wireless hardware
supports changing the MAC address while the underlying net_device is
powered. Note that this has a different meaning from
IFF_LIVE_ADDR_CHANGE as additional restrictions might be imposed by
the hardware, such as:

 - No connection is active on this interface, carrier is off
 - No scan is in progress
 - No offchannel operations are in progress

Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
James Prestwood 2022-08-26 10:00:31 -07:00 committed by Johannes Berg
parent 90703ba9bb
commit a36c421690
1 changed files with 9 additions and 0 deletions
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9
include/uapi/linux/nl80211.h
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@ -6281,6 +6281,14 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_RADAR_BACKGROUND: Device supports background radar/CAC
* detection.
*
* @NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE: Device can perform a MAC address
* change without having to bring the underlying network device down
* first. For example, in station mode this can be used to vary the
* origin MAC address prior to a connection to a new AP for privacy
* or other reasons. Note that certain driver specific restrictions
* might apply, e.g. no scans in progress, no offchannel operations
* in progress, and no active connections.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@ -6348,6 +6356,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_BSS_COLOR,
NL80211_EXT_FEATURE_FILS_CRYPTO_OFFLOAD,
NL80211_EXT_FEATURE_RADAR_BACKGROUND,
NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,