From: Felix Fietkau <nbd@nbd.name>
To: linux-wireless@vger.kernel.org
Cc: johannes@sipsolutions.net
Subject: [PATCH 5.10 1/3] mac80211: fix memory leak on filtered powersave frames
Date: Wed, 11 Nov 2020 19:33:57 +0100 [thread overview]
Message-ID: <20201111183359.43528-1-nbd@nbd.name> (raw)
After the status rework, ieee80211_tx_status_ext is leaking un-acknowledged
packets for stations in powersave mode.
To fix this, move the code handling those packets from __ieee80211_tx_status
into ieee80211_tx_status_ext
Reported-by: Tobias Waldvogel <tobias.waldvogel@gmail.com>
Fixes: 3318111cf63d ("mac80211: reduce duplication in tx status functions")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
net/mac80211/status.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 6feb45135020..3485610755ef 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -49,7 +49,8 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
int ac;
if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
- IEEE80211_TX_CTL_AMPDU)) {
+ IEEE80211_TX_CTL_AMPDU |
+ IEEE80211_TX_CTL_HW_80211_ENCAP)) {
ieee80211_free_txskb(&local->hw, skb);
return;
}
@@ -915,15 +916,6 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw,
ieee80211_mpsp_trigger_process(
ieee80211_get_qos_ctl(hdr), sta, true, acked);
- if (!acked && test_sta_flag(sta, WLAN_STA_PS_STA)) {
- /*
- * The STA is in power save mode, so assume
- * that this TX packet failed because of that.
- */
- ieee80211_handle_filtered_frame(local, sta, skb);
- return;
- }
-
if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) &&
(ieee80211_is_data(hdr->frame_control)) &&
(rates_idx != -1))
@@ -1150,6 +1142,12 @@ void ieee80211_tx_status_ext(struct ieee80211_hw *hw,
-info->status.ack_signal);
}
} else if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
+ /*
+ * The STA is in power save mode, so assume
+ * that this TX packet failed because of that.
+ */
+ if (skb)
+ ieee80211_handle_filtered_frame(local, sta, skb);
return;
} else if (noack_success) {
/* nothing to do here, do not account as lost */
--
2.28.0
next reply other threads:[~2020-11-11 18:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-11 18:33 Felix Fietkau [this message]
2020-11-11 18:33 ` [PATCH 5.10 2/3] mac80211: minstrel: remove deferred sampling code Felix Fietkau
2021-07-28 14:04 ` Thomas Graf
2021-10-11 10:52 ` Kalle Valo
2020-11-11 18:33 ` [PATCH 5.10 3/3] mac80211: minstrel: fix tx status processing corner case Felix Fietkau
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