From 98d46b021f6ee246c7a73f9d490d4cddb4511a3b Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 6 Sep 2021 10:35:59 +0200
Subject: [PATCH] Revert "mac80211: do not use low data rates for data frames with no ack flag"
Git-commit: 98d46b021f6ee246c7a73f9d490d4cddb4511a3b
Patch-mainline: v5.15-rc4
References: git-fixes stable-5.14.10
This reverts commit d333322361e7 ("mac80211: do not use low data rates for
data frames with no ack flag").
Returning false early in rate_control_send_low breaks sending broadcast
packets, since rate control will not select a rate for it.
Before re-introducing a fixed version of this patch, we should probably also
make some changes to rate control to be more conservative in selecting rates
for no-ack packets and also prevent using probing rates on them, since we won't
get any feedback.
Fixes: d333322361e7 ("mac80211: do not use low data rates for data frames with no ack flag")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210906083559.9109-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/mac80211/rate.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index e5935e3d7a07..8c6416129d5b 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -392,10 +392,6 @@ static bool rate_control_send_low(struct ieee80211_sta *pubsta,
int mcast_rate;
bool use_basicrate = false;
- if (ieee80211_is_tx_data(txrc->skb) &&
- info->flags & IEEE80211_TX_CTL_NO_ACK)
- return false;
-
if (!pubsta || rc_no_data_or_no_ack_use_min(txrc)) {
__rate_control_send_low(txrc->hw, sband, pubsta, info,
txrc->rate_idx_mask);
--
2.26.2