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cfg80211: Allow a scan request for a specific BSSID

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This allows scans for a specific BSSID to be optimized by the user space
application by requesting the driver to set the Probe Request frame
BSSID field (Address 3) to the specified BSSID instead of the wildcard
BSSID. This prevents other APs from replying which reduces airtime need
and latency in getting the response from the target AP through.

This is an optimization and as such, it is acceptable for some of the
drivers not to support the mechanism. If not supported, the wildcard
BSSID will be used and more responses may be received.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen
2016-02-26 22:12:47 +02:00
committed by Johannes Berg
parent 5c05803a3e
commit 818965d391
5 changed files with 15 additions and 1 deletions
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2
include/net/cfg80211.h
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@@ -1455,6 +1455,7 @@ struct cfg80211_ssid {
* @mac_addr_mask: MAC address mask used with randomisation, bits that
* are 0 in the mask should be randomised, bits that are 1 should
* be taken from the @mac_addr
* @bssid: BSSID to scan for (most commonly, the wildcard BSSID)
*/
struct cfg80211_scan_request {
struct cfg80211_ssid *ssids;
@@ -1471,6 +1472,7 @@ struct cfg80211_scan_request {
u8 mac_addr[ETH_ALEN] __aligned(2);
u8 mac_addr_mask[ETH_ALEN] __aligned(2);
u8 bssid[ETH_ALEN] __aligned(2);
/* internal */
struct wiphy *wiphy;