From: James Prestwood <prestwoj@gmail.com>
To: linux-wireless@vger.kernel.org
Cc: James Prestwood <prestwoj@gmail.com>
Subject: [PATCH 1/2] nl80211: Add LIVE_ADDR_CHANGE feature
Date: Fri, 13 Sep 2019 12:59:07 -0700 [thread overview]
Message-ID: <20190913195908.7871-1-prestwoj@gmail.com> (raw)
Add a new feature bit signifying that the wireless hardware supports
changing the mac address while the underlying net_device is UP. Note
that this is slightly different from IFF_LIVE_ADDR_CHANGE as additional
restrictions might be imposed by the hardware. Typical restrictions
are:
- No connection is active on this interface, e.g. carrier is off
- No scan is in progress
- No offchannel operation is in progress
Signed-off-by: James Prestwood <prestwoj@gmail.com>
---
include/uapi/linux/nl80211.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index bf7c4222f512..0ceb945a08fb 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -5481,6 +5481,14 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_SAE_OFFLOAD: Device wants to do SAE authentication in
* station mode (SAE password is passed as part of the connect command).
*
+ * @NL80211_EXT_FEATURE_LIVE_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.
*/
@@ -5526,6 +5534,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_EXT_KEY_ID,
NL80211_EXT_FEATURE_STA_TX_PWR,
NL80211_EXT_FEATURE_SAE_OFFLOAD,
+ NL80211_EXT_FEATURE_LIVE_ADDRESS_CHANGE,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
--
2.17.1
next reply other threads:[~2019-09-13 20:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 19:59 James Prestwood [this message]
2019-09-13 19:59 ` [PATCH 2/2] mac80211: Support LIVE_ADDRESS_CHANGE feature James Prestwood
2019-10-04 11:56 ` Johannes Berg
2019-10-04 16:25 ` James Prestwood
2019-10-04 16:42 ` James Prestwood
2019-10-07 21:16 ` Johannes Berg
2019-10-08 15:37 ` Denis Kenzior
2019-10-08 15:52 ` Johannes Berg
2019-10-08 15:53 ` Denis Kenzior
2019-10-08 16:24 ` Johannes Berg
2019-10-08 16:23 ` Denis Kenzior
2019-10-08 17:08 ` Johannes Berg
2019-10-08 18:50 ` Denis Kenzior
2019-10-08 20:16 ` Johannes Berg
2019-10-08 20:55 ` Denis Kenzior
2019-10-10 15:18 ` Johannes Berg
2019-10-07 21:11 ` Johannes Berg
2019-10-08 15:28 ` Denis Kenzior
2019-10-08 15:49 ` Johannes Berg
2019-09-13 20:48 ` [PATCH 1/2] nl80211: Add LIVE_ADDR_CHANGE feature Johannes Berg
2019-09-13 20:56 ` James Prestwood
2019-09-13 21:01 ` Johannes Berg
2019-09-13 21:14 ` James Prestwood
2019-09-17 20:09 ` James Prestwood
2019-10-01 9:14 ` Johannes Berg
2019-10-08 22:13 ` James Prestwood
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