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wl1251: enforce changed hw encryption support on monitor state change

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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.gnedt@davizone.at>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
David Gnedt 2014-01-07 13:11:27 +01:00 committed by John W. Linville
parent 3d49da748b
commit b90a1165a7
1 changed files with 13 additions and 0 deletions
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13
drivers/net/wireless/ti/wl1251/main.c
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@ -687,6 +687,16 @@ 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);
@ -1119,6 +1129,9 @@ 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;