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| author | Sunil Dutt <usdutt@qti.qualcomm.com> | 2018-01-25 17:13:37 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-01-31 12:48:30 +0100 |
| commit | 5037a00992e5fcb3d8509964313565a3dab6697c (patch) | |
| tree | b300e0037876ff97b1cbd658e67e171df7793132 /net/wireless | |
| parent | 6335698e24ec11e1324b916177da6721df724dd8 (diff) | |
| download | linux-5037a00992e5fcb3d8509964313565a3dab6697c.tar.gz linux-5037a00992e5fcb3d8509964313565a3dab6697c.tar.xz | |
nl80211: Introduce scan flags to emphasize requested scan behavior
This commit defines new scan flags (LOW_SPAN, LOW_POWER, HIGH_LATENCY)
to emphasize the requested scan behavior for the driver. These flags
are optional and are mutually exclusive. The implementation of the
respective functionality can be driver/hardware specific.
These flags can be used to control the compromise between how long
a scan takes, how much power it uses, and high accurate/complete
the scan is in finding the BSSs.
Signed-off-by: Sunil Dutt <usdutt@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ab0c687d0c44..dd249ec9f228 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6715,8 +6715,17 @@ nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); - if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && - !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) + if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && + !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || + ((*flags & NL80211_SCAN_FLAG_LOW_SPAN) && + !wiphy_ext_feature_isset(wiphy, + NL80211_EXT_FEATURE_LOW_SPAN_SCAN)) || + ((*flags & NL80211_SCAN_FLAG_LOW_POWER) && + !wiphy_ext_feature_isset(wiphy, + NL80211_EXT_FEATURE_LOW_POWER_SCAN)) || + ((*flags & NL80211_SCAN_FLAG_HIGH_ACCURACY) && + !wiphy_ext_feature_isset(wiphy, + NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN))) return -EOPNOTSUPP; if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { |