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authorJohannes Berg <johannes@sipsolutions.net>2008-09-16 18:39:36 (GMT)
committerJohn W. Linville <linville@tuxdriver.com>2008-09-24 20:18:00 (GMT)
commit92ffe055c3ea45856183bebed62f8880f75fef3b (patch)
treee595450d94253fbf06532e93298311b59fa36c49 /net/wireless
parentf8b25cdad719cddceb9cf0d350065b3e59e74219 (diff)
downloadlinux-92ffe055c3ea45856183bebed62f8880f75fef3b.tar.xz
cfg80211: reject invalid configuration items
Reject configuring mesh-id for non-mesh, monitor flags for non-monitor. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a745932..572793c 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -418,7 +418,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
int err, ifindex;
enum nl80211_iftype type;
struct net_device *dev;
- u32 flags;
+ u32 _flags, *flags = NULL;
memset(&params, 0, sizeof(params));
@@ -442,18 +442,28 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
goto unlock;
}
- if (type == NL80211_IFTYPE_MESH_POINT &&
- info->attrs[NL80211_ATTR_MESH_ID]) {
+ if (info->attrs[NL80211_ATTR_MESH_ID]) {
+ if (type != NL80211_IFTYPE_MESH_POINT) {
+ err = -EINVAL;
+ goto unlock;
+ }
params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
}
+ if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
+ if (type != NL80211_IFTYPE_MONITOR) {
+ err = -EINVAL;
+ goto unlock;
+ }
+ err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
+ &_flags);
+ if (!err)
+ flags = &_flags;
+ }
rtnl_lock();
- err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
- info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
- &flags);
err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
- type, err ? NULL : &flags, &params);
+ type, flags, &params);
dev = __dev_get_by_index(&init_net, ifindex);
WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != type));