nl80211: check channel switch validity better
Before allowing userspace to initiate a channel switch, check that it's actually connected in some sense. Also use a more appropriate error code for the not connected case. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -5771,10 +5771,15 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
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/* useless if AP is not running */
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if (!wdev->beacon_interval)
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return -EINVAL;
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return -ENOTCONN;
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break;
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case NL80211_IFTYPE_ADHOC:
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if (!wdev->ssid_len)
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return -ENOTCONN;
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break;
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case NL80211_IFTYPE_MESH_POINT:
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if (!wdev->mesh_id_len)
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return -ENOTCONN;
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break;
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default:
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return -EOPNOTSUPP;
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