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- From: Felix Fietkau <[email protected]>
- Date: Wed, 11 Nov 2020 19:25:39 +0100
- Subject: [PATCH] mac80211: minstrel: fix tx status processing corner case
- Some drivers fill the status rate list without setting the rate index after
- the final rate to -1. minstrel_ht already deals with this, but minstrel
- doesn't, which causes it to get stuck at the lowest rate on these drivers.
- Fix this by checking the count as well.
- Cc: [email protected]
- Fixes: cccf129f820e ("mac80211: add the 'minstrel' rate control algorithm")
- Signed-off-by: Felix Fietkau <[email protected]>
- ---
- --- a/net/mac80211/rc80211_minstrel.c
- +++ b/net/mac80211/rc80211_minstrel.c
- @@ -274,7 +274,7 @@ minstrel_tx_status(void *priv, struct ie
- success = !!(info->flags & IEEE80211_TX_STAT_ACK);
-
- for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
- - if (ar[i].idx < 0)
- + if (ar[i].idx < 0 || !ar[i].count)
- break;
-
- ndx = rix_to_ndx(mi, ar[i].idx);
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