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cfg80211: Disallow HT/WEP in IBSS mode

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Currently, a user is allowed to choose a HT operating channel
with WEP when creating an IBSS network. WEP is not allowed
in HT configuration - this patch ensures that such requests
are denied.

Signed-off-by: Sujith Manoharan <c_manoha@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Sujith Manoharan 2012-10-18 10:19:28 +05:30 committed by Johannes Berg
parent f53c6a0d74
commit de7044ee85
1 changed files with 17 additions and 3 deletions
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20
net/wireless/nl80211.c
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@ -692,7 +692,7 @@ static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
static struct cfg80211_cached_keys * static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
struct nlattr *keys) struct nlattr *keys, bool *no_ht)
{ {
struct key_parse parse; struct key_parse parse;
struct nlattr *key; struct nlattr *key;
@ -735,6 +735,12 @@ nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
result->params[parse.idx].key_len = parse.p.key_len; result->params[parse.idx].key_len = parse.p.key_len;
result->params[parse.idx].key = result->data[parse.idx]; result->params[parse.idx].key = result->data[parse.idx];
memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
if (no_ht)
*no_ht = true;
}
} }
return result; return result;
@ -5406,10 +5412,18 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
return -EINVAL; return -EINVAL;
if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
bool no_ht = false;
connkeys = nl80211_parse_connkeys(rdev, connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS]); info->attrs[NL80211_ATTR_KEYS],
&no_ht);
if (IS_ERR(connkeys)) if (IS_ERR(connkeys))
return PTR_ERR(connkeys); return PTR_ERR(connkeys);
if ((ibss.channel_type != NL80211_CHAN_NO_HT) && no_ht) {
kfree(connkeys);
return -EINVAL;
}
} }
ibss.control_port = ibss.control_port =
@ -5710,7 +5724,7 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev, connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS]); info->attrs[NL80211_ATTR_KEYS], NULL);
if (IS_ERR(connkeys)) if (IS_ERR(connkeys))
return PTR_ERR(connkeys); return PTR_ERR(connkeys);
} }