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Commit 46856bbf authored by Sam Leffler's avatar Sam Leffler Committed by Johannes Berg
Browse files

cfg80211: add scan flag to indicate its priority



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: default avatarSam Leffler <sleffler@chromium.org>
Tested-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: default avatarBing Zhao <bzhao@marvell.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent e8e27c66
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+6 −2
Original line number Diff line number Diff line
@@ -3048,6 +3048,7 @@ enum nl80211_ap_sme_features {
 * @NL80211_FEATURE_SAE: This driver supports simultaneous authentication of
 *	equals (SAE) with user space SME (NL80211_CMD_AUTHENTICATE) in station
 *	mode
 * @NL80211_FEATURE_LOW_PRIORITY_SCAN: This driver supports low priority scan
 */
enum nl80211_feature_flags {
	NL80211_FEATURE_SK_TX_STATUS			= 1 << 0,
@@ -3056,6 +3057,7 @@ enum nl80211_feature_flags {
	NL80211_FEATURE_CELL_BASE_REG_HINTS		= 1 << 3,
	NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL	= 1 << 4,
	NL80211_FEATURE_SAE				= 1 << 5,
	NL80211_FEATURE_LOW_PRIORITY_SCAN		= 1 << 6,
};

/**
@@ -3096,9 +3098,11 @@ enum nl80211_connect_failed_reason {
 * Scan request control flags are used to control the handling
 * of NL80211_CMD_TRIGGER_SCAN and NL80211_CMD_START_SCHED_SCAN
 * requests.
 * (will be filled)
 *
 * @NL80211_SCAN_FLAG_LOW_PRIORITY: scan request has low priority
 */
enum nl80211_scan_flags {
	NL80211_SCAN_FLAG_LOW_PRIORITY			= 1<<0,
};
 */

#endif /* __LINUX_NL80211_H */
+14 −2
Original line number Diff line number Diff line
@@ -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;