From: David Gnedt <david.gn...@davizone.at>

The firmware doesn't support per packet encryption selection, so disable hw
encryption support completely while a monitor interface is present to support
injection of packets (which shouldn't get encrypted by hw).
To enforce the changed hw encryption support force a disassociation on
non-monitor interfaces.
For disassociation a workaround using hw connection monitor is employed,
which temporary enables hw connection manager flag.

Signed-off-by: David Gnedt <david.gn...@davizone.at>
Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
 drivers/net/wireless/ti/wl1251/main.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/wireless/ti/wl1251/main.c 
b/drivers/net/wireless/ti/wl1251/main.c
index bb6e873..1ef264c 100644
--- a/drivers/net/wireless/ti/wl1251/main.c
+++ b/drivers/net/wireless/ti/wl1251/main.c
@@ -688,6 +688,16 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 
changed)
                wl->power_level = conf->power_level;
        }
 
+       /*
+        * Tell stack that connection is lost because hw encryption isn't
+        * supported in monitor mode.
+        * This requires temporary enabling of the hw connection monitor flag
+        */
+       if ((changed & IEEE80211_CONF_CHANGE_MONITOR) && wl->vif) {
+               wl->hw->flags |= IEEE80211_HW_CONNECTION_MONITOR;
+               ieee80211_connection_loss(wl->vif);
+       }
+
 out_sleep:
        wl1251_ps_elp_sleep(wl);
 
@@ -1120,6 +1130,9 @@ static void wl1251_op_bss_info_changed(struct 
ieee80211_hw *hw,
        }
 
        if (changed & BSS_CHANGED_ASSOC) {
+               /* Disable temporary enabled hw connection monitor flag */
+               wl->hw->flags &= ~IEEE80211_HW_CONNECTION_MONITOR;
+
                if (bss_conf->assoc) {
                        wl->beacon_int = bss_conf->beacon_int;
 
-- 
1.7.9.5

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