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Subject[PATCH 13/16] wl1251: enforce changed hw encryption support on monitor state change
Date
From: David Gnedt <david.gnedt@davizone.at>

The firmware doesn't support per packet encryption selection, so disable hw
encryption support completly 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.gnedt@davizone.at>
---
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 174f403..f054741 100644
--- a/drivers/net/wireless/ti/wl1251/main.c
+++ b/drivers/net/wireless/ti/wl1251/main.c
@@ -685,6 +685,16 @@ 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.
+ * XXX This requires temporary enabling 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);

@@ -1116,6 +1126,9 @@ static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
}

if (changed & BSS_CHANGED_ASSOC) {
+ /* XXX 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;

--
1.7.10.4


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