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-rw-r--r--include/net/mac80211.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index dcdba96814a2..6ff49c13717b 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -6335,7 +6335,12 @@ bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
/**
* ieee80211_parse_tx_radiotap - Sanity-check and parse the radiotap header
- * of injected frames
+ * of injected frames.
+ *
+ * To accurately parse and take into account rate and retransmission fields,
+ * you must initialize the chandef field in the ieee80211_tx_info structure
+ * of the skb before calling this function.
+ *
* @skb: packet injected by userspace
* @dev: the &struct device of this 802.11 device
*/