From: Bala Shanmugam <bkamatch@qca.qualcomm.com>
Date: Fri, 20 Apr 2012 13:42:58 +0000 (+0530)
Subject: cfg80211: Validate legacy rateset.
X-Git-Tag: next-20120430~53^2~44
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=218d2e26dceb241e4b253c5c4702ee1b38b715cc;p=karo-tx-linux.git

cfg80211: Validate legacy rateset.

Legacy rates are not validated while configuring
tx rateset using iw. So below cmd is accepted by nl80211.
sudo iw wlan2 set bitrates legacy-2.4 1 2 3

Validate legacy rates and return
error if any rate in the rateset is not valid.

Signed-off-by: Bala Shanmugam <bkamatch@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index bcf6f70e518d..140c1d291d4e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5577,6 +5577,9 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
 				sband,
 				nla_data(tb[NL80211_TXRATE_LEGACY]),
 				nla_len(tb[NL80211_TXRATE_LEGACY]));
+			if ((mask.control[band].legacy == 0) &&
+			    nla_len(tb[NL80211_TXRATE_LEGACY]))
+				return -EINVAL;
 		}
 		if (tb[NL80211_TXRATE_MCS]) {
 			if (!ht_rateset_to_mask(