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staging: wfx: ensure that retry policy always fallbacks to MCS0 / 1Mbps 

When not using HT mode, minstrel always includes 1Mbps as fallback rate.
But, when using HT mode, this fallback is not included. Yet, it seems
that it could save some frames. So, this patch add it unconditionally.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20191217161318.31402-8-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jérôme Pouiller 2019-12-17 16:14:36 +00:00 committed by Greg Kroah-Hartman
parent cefc203362
commit 2e12ab7f05
1 changed files with 11 additions and 0 deletions
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11
drivers/staging/wfx/data_tx.c
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@ -538,6 +538,17 @@ static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
}
}
} while (!finished);
// Ensure that MCS0 or 1Mbps is present at the end of the retry list
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
if (rates[i].idx == 0)
break;
if (rates[i].idx == -1) {
rates[i].idx = 0;
rates[i].count = 8; // == hw->max_rate_tries
rates[i].flags = rates[i - 1].flags & IEEE80211_TX_RC_MCS;
break;
}
}
// All retries use long GI
for (i = 1; i < IEEE80211_TX_MAX_RATES; i++)
rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;