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mac80211: add a comment about monitor-to-dev injection
Add a note with a use-case for the monitor-to-dev injection mechanism in mac80211, reported by Ben Greear. Change-Id: I6456997ef9bc40b24ede860b6ef2fed5af49cf44 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -2270,6 +2270,9 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
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* isn't always enough to find the interface to use; for proper
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* VLAN/WDS support we will need a different mechanism (which
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* likely isn't going to be monitor interfaces).
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*
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* This is necessary, for example, for old hostapd versions that
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* don't use nl80211-based management TX/RX.
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*/
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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