From eef6caf8a916f32f8d9b2a02d4fa7674736c00ac Mon Sep 17 00:00:00 2001
From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Mon, 2 Jul 2007 22:36:38 -0700
Subject: [PATCH] [MAC80211]: Set low initial rate in rc80211_simple
The initial rate for STA's using rc80211_simple is set to the last
rate in the rate table. For situations for which the signal is weak,
the rate may be too high for authentication and association. Although
the rc80211_simple module will adjust the speed, the response may not
be fast enough for a successful connection. This modification sets the
initial rate to the lowest supported value.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/mac80211/rc80211_simple.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 2048cfd1ca700..5ae7fc4546654 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -283,14 +283,16 @@ static void rate_control_simple_rate_init(void *priv, void *priv_sta,
int i;
sta->txrate = 0;
mode = local->oper_hw_mode;
- /* TODO: what is a good starting rate for STA? About middle? Maybe not
- * the lowest or the highest rate.. Could consider using RSSI from
- * previous packets? Need to have IEEE 802.1X auth succeed immediately
- * after assoc.. */
+ /* TODO: This routine should consider using RSSI from previous packets
+ * as we need to have IEEE 802.1X auth succeed immediately after assoc..
+ * Until that method is implemented, we will use the lowest supported rate
+ * as a workaround, */
for (i = 0; i < mode->num_rates; i++) {
if ((sta->supp_rates & BIT(i)) &&
- (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED))
+ (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED)) {
sta->txrate = i;
+ break;
+ }
}
}
--
2.30.2