[PATCH 2/3] cfg80211: enable use of non-cleared DFS channels for DFS offload
From: Sergey Matyukevich <hidden>
Date: 2018-03-26 13:36:54
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Dmitry Lebed <redacted> Currently channel switch/start_ap to DFS channel cannot be done to non-CAC-cleared channel even if DFS offload if enabled. Make non-cleared DFS channels available if DFS offload is enabled. CAC will be started by HW after channel change, start_ap call, etc. Signed-off-by: Dmitry Lebed <redacted> --- net/wireless/chan.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index a48859982a32..2db713d18f71 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c@@ -579,6 +579,10 @@ static bool cfg80211_get_chans_dfs_available(struct wiphy *wiphy, { struct ieee80211_channel *c; u32 freq, start_freq, end_freq; + bool dfs_offload; + + dfs_offload = wiphy_ext_feature_isset(wiphy, + NL80211_EXT_FEATURE_DFS_OFFLOAD); start_freq = cfg80211_get_start_freq(center_freq, bandwidth); end_freq = cfg80211_get_end_freq(center_freq, bandwidth);
@@ -596,8 +600,9 @@ static bool cfg80211_get_chans_dfs_available(struct wiphy *wiphy, if (c->flags & IEEE80211_CHAN_DISABLED) return false; - if ((c->flags & IEEE80211_CHAN_RADAR) && - (c->dfs_state != NL80211_DFS_AVAILABLE)) + if ((c->flags & IEEE80211_CHAN_RADAR) && + (c->dfs_state != NL80211_DFS_AVAILABLE) && + !(c->dfs_state == NL80211_DFS_USABLE && dfs_offload)) return false; }
--
2.11.0