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mac80211: do not overwrite the sequence number if requested 

Check if the Tx control flag is set to prevent sequence number overwrites,
and if so, do not assign a new sequence number to the transmitted frame.

Signed-off-by: Mathy Vanhoef <Mathy.Vanhoef@kuleuven.be>
Link: https://lore.kernel.org/r/20200723100153.31631-3-Mathy.Vanhoef@kuleuven.be
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Mathy Vanhoef 2020-07-23 14:01:50 +04:00 committed by Johannes Berg
parent e02281e7a5
commit 29c3e95f79
1 changed files with 3 additions and 0 deletions
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3
net/mac80211/tx.c
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@ -825,6 +825,9 @@ ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
if (ieee80211_is_qos_nullfunc(hdr->frame_control))
return TX_CONTINUE;
if (info->control.flags & IEEE80211_TX_CTRL_NO_SEQNO)
return TX_CONTINUE;
/*
* Anything but QoS data that has a sequence number field
* (is long enough) gets a sequence number from the global