cfg80211: add bss_type and privacy arguments in cfg80211_get_bss()

802.11ad adds new a network type (PBSS) and changes the capability
field interpretation for the DMG (60G) band.
The same 2 bits that were interpreted as "ESS" and "IBSS" before are
re-used as a 2-bit field with 3 valid values (and 1 reserved). Valid
values are: "IBSS", "PBSS" (new) and "AP".

In order to get the BSS struct for the new PBSS networks, change the
cfg80211_get_bss() function to take a new enum ieee80211_bss_type
argument with the valid network types, as "capa_mask" and "capa_val"
no longer work correctly (the search must be band-aware now.)

The remaining bits in "capa_mask" and "capa_val" are used only for
privacy matching so replace those two with a privacy enum as well.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
[rewrite commit log, tiny fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 37 insertions, 2 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 64e09e1e8099..28fff56f5606 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -215,6 +215,39 @@ enum ieee80211_rate_flags {
 };
 
 /**
+ * enum ieee80211_bss_type - BSS type filter
+ *
+ * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS
+ * @IEEE80211_BSS_TYPE_PBSS: Personal BSS
+ * @IEEE80211_BSS_TYPE_IBSS: Independent BSS
+ * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS
+ * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type
+ */
+enum ieee80211_bss_type {
+        IEEE80211_BSS_TYPE_ESS,
+        IEEE80211_BSS_TYPE_PBSS,
+        IEEE80211_BSS_TYPE_IBSS,
+        IEEE80211_BSS_TYPE_MBSS,
+        IEEE80211_BSS_TYPE_ANY
+};
+
+/**
+ * enum ieee80211_privacy - BSS privacy filter
+ *
+ * @IEEE80211_PRIVACY_ON: privacy bit set
+ * @IEEE80211_PRIVACY_OFF: privacy bit clear
+ * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting
+ */
+enum ieee80211_privacy {
+        IEEE80211_PRIVACY_ON,
+        IEEE80211_PRIVACY_OFF,
+        IEEE80211_PRIVACY_ANY
+};
+
+#define IEEE80211_PRIVACY(x)    \
+        ((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF)
+
+/**
  * struct ieee80211_rate - bitrate definition
  *
  * This structure describes a bitrate that an 802.11 PHY can
@@ -4012,14 +4045,16 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy,
                                       struct ieee80211_channel *channel,
                                       const u8 *bssid,
                                       const u8 *ssid, size_t ssid_len,
-                                      u16 capa_mask, u16 capa_val);
+                                      enum ieee80211_bss_type bss_type,
+                                      enum ieee80211_privacy);
 static inline struct cfg80211_bss *
 cfg80211_get_ibss(struct wiphy *wiphy,
                   struct ieee80211_channel *channel,
                   const u8 *ssid, size_t ssid_len)
 {
         return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len,
-                                WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
+                                IEEE80211_BSS_TYPE_IBSS,
+                                IEEE80211_PRIVACY_ANY);
 }
 
 /**