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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-02-21 00:20:39 -0500
committerJohn W. Linville <linville@tuxdriver.com>2009-02-27 14:52:59 -0500
commite38f8a7a8bebbab9d97f204e2cf05ef58b048a1d (patch)
tree6b0e9f6ce18eb6e2e6d1b29db3538399d0735b70 /net/wireless/scan.c
parent3fc71f775af677f640f0f0780b16f1b0958f6d9d (diff)
downloadlinux-e38f8a7a8bebbab9d97f204e2cf05ef58b048a1d.tar.gz
cfg80211: Add AP beacon regulatory hints
When devices are world roaming they cannot beacon or do active scan on 5 GHz or on channels 12, 13 and 14 on the 2 GHz band. Although we have a good regulatory API some cards may _always_ world roam, this is also true when a system does not have CRDA present. Devices doing world roaming can still passive scan, if they find a beacon from an AP on one of the world roaming frequencies we make the assumption we can do the same and we also remove the passive scan requirement. This adds support for providing beacon regulatory hints based on scans. This works for devices that do either hardware or software scanning. If a channel has not yet been marked as having had a beacon present on it we queue the beacon hint processing into the workqueue. All wireless devices will benefit from beacon regulatory hints from any wireless device on a system including new devices connected to the system at a later time. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/scan.c')
-rw-r--r--net/wireless/scan.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 60600657b65..280dbcd02c1 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -430,6 +430,9 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy,
if (!res)
return NULL;
+ if (res->pub.capability & WLAN_CAPABILITY_ESS)
+ regulatory_hint_found_beacon(wiphy, channel, gfp);
+
/* cfg80211_bss_update gives us a referenced result */
return &res->pub;
}