From bc2dfc02836b1133d1bf4d22aa13d48ac98eabef Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Sat, 23 Oct 2021 11:10:50 +0200 Subject: cfg80211: implement APIs for dedicated radar detection HW If a dedicated (off-channel) radar detection hardware (chain) is available in the hardware/driver, allow this to be used by calling the NL80211_CMD_RADAR_DETECT command with a new flag attribute requesting off-channel radar detection is used. Offchannel CAC (channel availability check) avoids the CAC downtime when switching to a radar channel or when turning on the AP. Drivers advertise support for this using the new feature flag NL80211_EXT_FEATURE_RADAR_OFFCHAN. Tested-by: Evelyn Tsai Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/7468e291ef5d05d692c1738d25b8f778d8ea5c3f.1634979655.git.lorenzo@kernel.org Link: https://lore.kernel.org/r/1e60e60fef00e14401adae81c3d49f3e5f307537.1634979655.git.lorenzo@kernel.org Link: https://lore.kernel.org/r/85fa50f57fc3adb2934c8d9ca0be30394de6b7e8.1634979655.git.lorenzo@kernel.org Link: https://lore.kernel.org/r/4b6c08671ad59aae0ac46fc94c02f31b1610eb72.1634979655.git.lorenzo@kernel.org Link: https://lore.kernel.org/r/241849ccaf2c228873c6f8495bf87b19159ba458.1634979655.git.lorenzo@kernel.org [remove offchan_mutex, fix cfg80211_stop_offchan_radar_detection(), remove gfp_t argument, fix documentation, fix tracing] Signed-off-by: Johannes Berg --- net/wireless/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/wireless/core.c') diff --git a/net/wireless/core.c b/net/wireless/core.c index eb297e1015e0..39b2d4ae581d 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -545,6 +545,7 @@ use_default_name: INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work); INIT_WORK(&rdev->conn_work, cfg80211_conn_work); INIT_WORK(&rdev->event_work, cfg80211_event_work); + INIT_DELAYED_WORK(&rdev->offchan_cac_work, cfg80211_offchan_cac_work); init_waitqueue_head(&rdev->dev_wait); @@ -1207,6 +1208,8 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev, cfg80211_pmsr_wdev_down(wdev); + cfg80211_stop_offchan_radar_detection(wdev); + switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: __cfg80211_leave_ibss(rdev, dev, true); -- cgit v1.2.3