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madwifi: add sanity checks for monitor mode injection

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16218 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2009-05-30 17:53:41 +00:00
parent 4b20535d42
commit 27e2b99605
1 changed files with 26 additions and 0 deletions
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26
package/madwifi/patches/436-injection_checks.patch Normal file
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@ -0,0 +1,26 @@
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -3199,7 +3199,13 @@ ath_tx_startraw(struct net_device *dev,
struct ieee80211_frame *wh;
wh = (struct ieee80211_frame *)skb->data;
+
try0 = ph->try0;
+ if (!try0)
+ try0 = 1;
+ else if (try0 > 11)
+ try0 = 11;
+
rt = sc->sc_currates;
txrate = dot11_to_ratecode(sc, rt, ph->rate0);
power = ph->power > 63 ? 63 : ph->power;
@@ -3224,7 +3230,8 @@ ath_tx_startraw(struct net_device *dev,
rt = sc->sc_currates;
KASSERT(rt != NULL, ("no rate table, mode %u", sc->sc_curmode));
- if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+ if (((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_DATA) ||
+ IEEE80211_IS_MULTICAST(wh->i_addr1)) {
flags |= HAL_TXDESC_NOACK; /* no ack on broad/multicast */
sc->sc_stats.ast_tx_noack++;
try0 = 1;