wlcore: send EAPOLs with basic rate policy

EAPOLs are sent at high rates as they are considered
data packets. Some APs like Motorola Symbol AP7131 and AP650
don't respond well to these rates and don't respond with
EAPOL 3/4 consistently. When sending EAPOL 2/4 at 54Mbps
we've seen approx 30% success rate in getting EAPOL 3/4 response
while using 11Mbps we got 100% success.
To increase the chances of successful 4-Way handshake with
such APs, send EAPOLs with basic rate policy in order to avoid
high rates.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 6983e7a829d0be6cc82f49780cfebc42938e179e..8ee82b9f93f4cf48a75a7cadfbddcf62a38cfd94 100644 (file)
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -305,11 +305,15 @@ static void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif,
        if (is_dummy || !wlvif)
                rate_idx = 0;
        else if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
-               /* if the packets are destined for AP (have a STA entry)
-                  send them with AP rate policies, otherwise use default
-                  basic rates */
+               /*
+                * if the packets are destined for AP (have a STA entry)
+                * send them with AP rate policies (EAPOLs are an exception),
+                * otherwise use default basic rates
+                */
                if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
                        rate_idx = wlvif->sta.p2p_rate_idx;
+               else if (skb->protocol == cpu_to_be16(ETH_P_PAE))
+                       rate_idx = wlvif->sta.basic_rate_idx;
                else if (control->control.sta)
                        rate_idx = wlvif->sta.ap_rate_idx;
                else