mac80211: support scan features for improved scan privacy
Support the new random SN and minimal probe request contents
scan flags for the case of software scan - for hardware scan
the drivers need to opt in, but may need to do only that,
depending on their implementation.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 0325133..b744b10 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1433,6 +1433,9 @@
chandef->chan->center_freq);
}
+ if (flags & IEEE80211_PROBE_FLAG_MIN_CONTENT)
+ goto done;
+
/* insert custom IEs that go before HT */
if (ie && ie_len) {
static const u8 before_ht[] = {
@@ -1510,6 +1513,7 @@
return pos - buffer;
out_err:
WARN_ONCE(1, "not enough space for preq IEs\n");
+ done:
return pos - buffer;
}