nl80211/cfg80211: Allow SSID to be specified in new beacon command

This makes it easier for drivers that generate Beacon and Probe Response
frames internally (in firmware most likely) in AP mode.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 8ad70dcac3f9..227ee9a0ff1a 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -161,6 +161,9 @@
  * @NL80211_CMD_SET_BEACON: set the beacon on an access point interface
  *      using the %NL80211_ATTR_BEACON_INTERVAL, %NL80211_ATTR_DTIM_PERIOD,
  *      %NL80211_ATTR_BEACON_HEAD and %NL80211_ATTR_BEACON_TAIL attributes.
+ *      Following attributes are provided for drivers that generate full Beacon
+ *      and Probe Response frames internally: %NL80211_ATTR_SSID,
+ *      %NL80211_ATTR_HIDDEN_SSID.
  * @NL80211_CMD_NEW_BEACON: add a new beacon to an access point interface,
  *      parameters are like for %NL80211_CMD_SET_BEACON.
  * @NL80211_CMD_DEL_BEACON: remove the beacon, stop sending it
@@ -1019,6 +1022,10 @@ enum nl80211_commands {
  *      being a list of supported rates as defined by IEEE 802.11 7.3.2.2 but
  *      without the length restriction (at most %NL80211_MAX_SUPP_RATES).
  *
+ * @NL80211_ATTR_HIDDEN_SSID: indicates whether SSID is to be hidden from Beacon
+ *      and Probe Response (when response to wildcard Probe Request); see
+ *      &enum nl80211_hidden_ssid, represented as a u32
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1224,6 +1231,8 @@ enum nl80211_attrs {
 
         NL80211_ATTR_SCAN_SUPP_RATES,
 
+        NL80211_ATTR_HIDDEN_SSID,
+
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,
@@ -2430,4 +2439,19 @@ enum nl80211_rekey_data {
         MAX_NL80211_REKEY_DATA = NUM_NL80211_REKEY_DATA - 1
 };
 
+/**
+ * enum nl80211_hidden_ssid - values for %NL80211_ATTR_HIDDEN_SSID
+ * @NL80211_HIDDEN_SSID_NOT_IN_USE: do not hide SSID (i.e., broadcast it in
+ *      Beacon frames)
+ * @NL80211_HIDDEN_SSID_ZERO_LEN: hide SSID by using zero-length SSID element
+ *      in Beacon frames
+ * @NL80211_HIDDEN_SSID_ZERO_CONTENTS: hide SSID by using correct length of SSID
+ *      element in Beacon frames but zero out each byte in the SSID
+ */
+enum nl80211_hidden_ssid {
+        NL80211_HIDDEN_SSID_NOT_IN_USE,
+        NL80211_HIDDEN_SSID_ZERO_LEN,
+        NL80211_HIDDEN_SSID_ZERO_CONTENTS
+};
+
 #endif /* __LINUX_NL80211_H */