[PATCH v2 12/16] wl1251: enforce changed hw encryption support on monitor state change
From: Pali Rohár <hidden>
Date: 2013-12-08 09:29:05
Also in:
linux-wireless, lkml
Subsystem:
the rest, ti wilink wireless drivers · Maintainer:
Linus Torvalds
From: David Gnedt <redacted> 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 <redacted> Signed-off-by: Pali Rohár <redacted> --- 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