diff options
| author | Felix Fietkau <nbd@nbd.name> | 2020-11-11 19:33:57 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-11-12 11:23:58 +0100 |
| commit | 1d18288555b3265f84d08f1f75582415e4ec343a (patch) | |
| tree | 69b435b86c1ca2d9fc51c5da1f83dd0778a727ad /net | |
| parent | 94e2bd0b259ed39a755fdded47e6734acf1ce464 (diff) | |
| download | linux-1d18288555b3265f84d08f1f75582415e4ec343a.tar.bz2 | |
mac80211: fix memory leak on filtered powersave frames
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>
Link: https://lore.kernel.org/r/20201111183359.43528-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/status.c | 18 |
1 files 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 */ |