cfg80211: introduce scan IE limit attribute
This patch introduces a new attribute for a wiphy that tells
userspace how long the information elements added to a probe
request frame can be at most. It also updates the at76 to
advertise that it cannot support that, and, for now until I
can fix that, iwlwifi too.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index fbcbed6..ee58a78 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -728,7 +728,18 @@
return NULL;
wiphy->privid = mac80211_wiphy_privid;
- wiphy->max_scan_ssids = 4;
+
+ if (!ops->hw_scan) {
+ /* For hw_scan, driver needs to set these up. */
+ wiphy->max_scan_ssids = 4;
+
+ /* we support a maximum of 32 rates in cfg80211 */
+ wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN
+ - 2 - 32 /* SSID */
+ - 4 - 32 /* (ext) supp rates */;
+
+ }
+
/* Yes, putting cfg80211_bss into ieee80211_bss is a hack */
wiphy->bss_priv_size = sizeof(struct ieee80211_bss) -
sizeof(struct cfg80211_bss);