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[PATCH] ieee80211: Workaround malformed 802.11 frames from AP

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Stop processing further but return success when we receive a malformed
packet from the AP. We need this patch to workaround some AP bugs. For
example, the beacon frames from the Orinoco AP1000 contains an IE (value
= 128) with length equals to 8 but the actual frame length is only 7.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Zhu Yi 2006-08-21 11:34:19 +08:00 committed by John W. Linville
parent 5a65694971
commit f09fc44d8c
1 changed files with 10 additions and 7 deletions
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17
net/ieee80211/ieee80211_rx.c
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@ -1078,13 +1078,16 @@ static int ieee80211_parse_info_param(struct ieee80211_info_element
while (length >= sizeof(*info_element)) {
if (sizeof(*info_element) + info_element->len > length) {
IEEE80211_DEBUG_MGMT("Info elem: parse failed: "
"info_element->len + 2 > left : "
"info_element->len+2=%zd left=%d, id=%d.\n",
info_element->len +
sizeof(*info_element),
length, info_element->id);
return 1;
IEEE80211_ERROR("Info elem: parse failed: "
"info_element->len + 2 > left : "
"info_element->len+2=%zd left=%d, id=%d.\n",
info_element->len +
sizeof(*info_element),
length, info_element->id);
/* We stop processing but don't return an error here
* because some misbehaviour APs break this rule. ie.
* Orinoco AP1000. */
break;
}
switch (info_element->id) {