ath6kl: reconfigure RSN capabilities when restarting AP

If the firmware decides to initiate a channel switch on an AP vif
running an RSN BSS, reconfigure the saved RSN IE capabilities as well.

Fixes a bug where the beacon and 4-way handshake would have a capability
mismatch after a channel switch, since the firmware apparently clears
these on an AP disconnect.

Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index e8b9c1e..75ddfaf 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -2924,6 +2924,7 @@ static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
                                            WLAN_EID_RSN, WMI_RSN_IE_CAPB,
                                            (const u8 *) &rsn_capab,
                                            sizeof(rsn_capab));
+               vif->rsn_capab = rsn_capab;
                if (res < 0)
                        return res;
        }

diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h
index baf149e..a95bf6a 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/core.h
+++ b/drivers/net/wireless/ath/ath6kl/core.h
@@ -605,6 +605,7 @@ struct ath6kl_vif {
        struct net_device_stats net_stats;
        struct target_stats target_stats;
        struct wmi_connect_cmd profile;
+       u16 rsn_capab;
 
        struct list_head mc_filter;
 };

diff --git a/drivers/net/wireless/ath/ath6kl/main.c b/drivers/net/wireless/ath/ath6kl/main.c
index eca4d47..9533558 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/main.c
+++ b/drivers/net/wireless/ath/ath6kl/main.c
@@ -608,6 +608,18 @@ static int ath6kl_commit_ch_switch(struct ath6kl_vif *vif, u16 channel)
 
        switch (vif->nw_type) {
        case AP_NETWORK:
+               /*
+                * reconfigure any saved RSN IE capabilites in the beacon /
+                * probe response to stay in sync with the supplicant.
+                */
+               if (vif->rsn_capab &&
+                   test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
+                            ar->fw_capabilities))
+                       ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
+                                             WLAN_EID_RSN, WMI_RSN_IE_CAPB,
+                                             (const u8 *) &vif->rsn_capab,
+                                             sizeof(vif->rsn_capab));
+
                return ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx,
                                                    &vif->profile);
        default: