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cfg80211: add scan flag to indicate its priority

Browse source 
Add NL80211_SCAN_FLAG_LOW_PRIORITY flag support. It tells drivers
that this is a low priority scan request, so that they can take
necessary action.
Drivers need to advertise low priority scan capability during
registration.

Signed-off-by: Sam Leffler <[email protected]>
Tested-by: Amitkumar Karwar <[email protected]>
Signed-off-by: Amitkumar Karwar <[email protected]>
Signed-off-by: Bing Zhao <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Sam Leffler 2012-10-11 21:03:32 -07:00 • committed by Johannes Berg
commit 46856bbf0f
2 changed files with 20 additions and 4 deletions
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16
net/wireless/nl80211.c
View file

@ -4368,9 +4368,15 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
}
}
if (info->attrs[NL80211_ATTR_SCAN_FLAGS])
if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
request->flags = nla_get_u32(
info->attrs[NL80211_ATTR_SCAN_FLAGS]);
if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
!(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
err = -EOPNOTSUPP;
goto out_free;
}
}
request->no_cck =
nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
@ -4603,9 +4609,15 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
request->ie_len);
}
if (info->attrs[NL80211_ATTR_SCAN_FLAGS])
if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
request->flags = nla_get_u32(
info->attrs[NL80211_ATTR_SCAN_FLAGS]);
if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
!(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
err = -EOPNOTSUPP;
goto out_free;
}
}
request->dev = dev;
request->wiphy = &rdev->wiphy;