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RE: [PATCH] mac80211_hwsim: add channel switch support

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Hi, Johannes:

Very glad to mail you , and I just found the latest kernel version can't support the wifi Mode A by AP Mode.

Our chip is:

01:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
        Subsystem: Intel Corporation Centrino Advanced-N 6205 AGN

iwconfig wlan0
wlan0     IEEE 802.11abg  ESSID:off/any
          Mode:Managed  Access Point: Not-Associated   Tx-Power=15 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off

Have you ever met such problem?




Best Regards.
--------------------------------------
Bopeng Liu
WIND RIVER | China Development Center
Phone: 8610-6483-5012



________________________________________
From: linux-wireless-owner@xxxxxxxxxxxxxxx [linux-wireless-owner@xxxxxxxxxxxxxxx] on behalf of Johannes Berg [johannes@xxxxxxxxxxxxxxxx]
Sent: Wednesday, January 22, 2014 6:51 PM
To: linux-wireless@xxxxxxxxxxxxxxx
Cc: Andrei Otcheretianski
Subject: [PATCH] mac80211_hwsim: add channel switch support

From: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>

Advertise to mac80211 that we can do channel switch both
for STA and AP/GO.
After each beacon transmission check if CSA is done and
call ieee80211_csa_finish if needed.

Change-Id: I1cb34c04f533275522236381ae14b624bec35418
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
 drivers/net/wireless/mac80211_hwsim.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 4950359..5268ede 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1307,6 +1307,9 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,

        mac80211_hwsim_tx_frame(hw, skb,
                                rcu_dereference(vif->chanctx_conf)->def.chan);
+
+       if (vif->csa_active && ieee80211_csa_is_complete(vif))
+               ieee80211_csa_finish(vif);
 }

 static enum hrtimer_restart
@@ -2109,13 +2112,15 @@ static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
                    IEEE80211_HW_AMPDU_AGGREGATION |
                    IEEE80211_HW_WANT_MONITOR_VIF |
                    IEEE80211_HW_QUEUE_CONTROL |
-                   IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
+                   IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
+                   IEEE80211_HW_CHANCTX_STA_CSA;
        if (rctbl)
                hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;

        hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
                            WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
-                           WIPHY_FLAG_AP_UAPSD;
+                           WIPHY_FLAG_AP_UAPSD |
+                           WIPHY_FLAG_HAS_CHANNEL_SWITCH;
        hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;

        /* ask mac80211 to reserve space for magic */
--
1.8.5.1

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