diff options
| author | Jouni Malinen <jouni@qca.qualcomm.com> | 2016-02-26 21:12:47 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2016-04-05 10:56:28 +0200 |
| commit | 818965d3917774955fad52f87b59d690d8be9e8b (patch) | |
| tree | 37b1490ce03f051ec8c87c476e13df67e4872627 /net | |
| parent | mac80211: document only injected *_RADIOTAP_* flags (diff) | |
| download | linux-818965d3917774955fad52f87b59d690d8be9e8b.tar.xz linux-818965d3917774955fad52f87b59d690d8be9e8b.zip | |
cfg80211: Allow a scan request for a specific BSSID
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/wireless/nl80211.c | 6 | ||||
| -rw-r--r-- | net/wireless/scan.c | 2 | ||||
| -rw-r--r-- | net/wireless/sme.c | 2 |
3 files changed, 10 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 98c924260b3d..1b43f7839eeb 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -5996,6 +5996,12 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) request->no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); + if (info->attrs[NL80211_ATTR_MAC]) + memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), + ETH_ALEN); + else + eth_broadcast_addr(request->bssid); + request->wdev = wdev; request->wiphy = &rdev->wiphy; request->scan_start = jiffies; diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 14d5369eb778..50ea8e3fcbeb 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -1293,6 +1293,8 @@ int cfg80211_wext_siwscan(struct net_device *dev, if (wiphy->bands[i]) creq->rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1; + eth_broadcast_addr(creq->bssid); + rdev->scan_req = creq; err = rdev_scan(rdev, creq); if (err) { diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 544558171787..65882d2777c0 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -119,6 +119,8 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev) wdev->conn->params.ssid_len); request->ssids[0].ssid_len = wdev->conn->params.ssid_len; + eth_broadcast_addr(request->bssid); + request->wdev = wdev; request->wiphy = &rdev->wiphy; request->scan_start = jiffies; |