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openwrt-ipq-breeze303/package/kernel/mac80211/patches/nss/ath11k/907-04-wifi-ath11k-fix-connection-failure-due-to-unexpected-peer-delete.patch
Sean Khan db9ba5cdb1 ath11k_nss: Organize patch order and formatting 
NSS patches should always get applied last as to avoid fuzzing issues
with upstream patches.

Also cleanup patches that introduced spaces as indents vs. tabs

Signed-off-by: Sean Khan <datapronix@protonmail.com>

ath11k_nss: drop upstreamed patch

A variation of this patch 'wifi: mac80211: Use flexible array in struct ieee80211_tim_ie'
was upstreamed in commit 'e6e4d90b69027d74ba7e9a0a586b95a5714e10c0'.
Remove it to avoid compilation issues.

Signed-off-by: Sean Khan <datapronix@protonmail.com>

ath11k_nss: Fix patch conflict

Signed-off-by: Sean Khan <datapronix@protonmail.com>
2024-10-11 19:19:08 -04:00

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From: Baochen Qiang <quic_bqiang@quicinc.com>
To: <ath11k@lists.infradead.org>
Subject: [PATCH 4/4] wifi: ath11k: fix connection failure due to unexpected
peer delete
Date: Tue, 23 Jan 2024 10:57:00 +0800
Currently ath11k_mac_op_unassign_vif_chanctx() deletes peer but
ath11k_mac_op_assign_vif_chanctx() doesn't create it. This results in
connection failure if MAC80211 calls drv_unassign_vif_chanctx() and
drv_assign_vif_chanctx() during AUTH and ASSOC, see below log:
[ 102.372431] wlan0: authenticated
[ 102.372585] ath11k_pci 0000:01:00.0: wlan0: disabling HT/VHT/HE as WMM/QoS is not supported by the AP
[ 102.372593] ath11k_pci 0000:01:00.0: mac chanctx unassign ptr ffff895084638598 vdev_id 0
[ 102.372808] ath11k_pci 0000:01:00.0: WMI vdev stop id 0x0
[ 102.383114] ath11k_pci 0000:01:00.0: vdev stopped for vdev id 0
[ 102.384689] ath11k_pci 0000:01:00.0: WMI peer delete vdev_id 0 peer_addr 20:e5:2a:21:c4:51
[ 102.396676] ath11k_pci 0000:01:00.0: htt peer unmap vdev 0 peer 20:e5:2a:21:c4:51 id 3
[ 102.396711] ath11k_pci 0000:01:00.0: peer delete resp for vdev id 0 addr 20:e5:2a:21:c4:51
[ 102.396722] ath11k_pci 0000:01:00.0: mac removed peer 20:e5:2a:21:c4:51 vdev 0 after vdev stop
[ 102.396780] ath11k_pci 0000:01:00.0: mac chanctx assign ptr ffff895084639c18 vdev_id 0
[ 102.400628] wlan0: associate with 20:e5:2a:21:c4:51 (try 1/3)
[ 102.508864] wlan0: associate with 20:e5:2a:21:c4:51 (try 2/3)
[ 102.612815] wlan0: associate with 20:e5:2a:21:c4:51 (try 3/3)
[ 102.720846] wlan0: association with 20:e5:2a:21:c4:51 timed out
The peer delete logic in ath11k_mac_op_unassign_vif_chanctx() is
introduced by commit b4a0f54156ac ("ath11k: move peer delete after
vdev stop of station for QCA6390 and WCN6855") to fix firmware
crash issue caused by unexpected vdev stop/peer delete sequence.
Actually for a STA interface peer should be deleted in
ath11k_mac_op_sta_state() when STA's state changes from
IEEE80211_STA_NONE to IEEE80211_STA_NOTEXIST, which also coincides
with current peer creation design that peer is created during
IEEE80211_STA_NOTEXIST -> IEEE80211_STA_NONE transition. So move
peer delete back to ath11k_mac_op_sta_state(), also stop vdev before
deleting peer to fix the firmware crash issue mentioned there. In
this way the connection failure mentioned here is also fixed.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Fixes: b4a0f54156ac ("ath11k: move peer delete after vdev stop of station for QCA6390 and WCN6855")
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
---
drivers/net/wireless/ath/ath11k/mac.c | 139 ++++++++++++++++----------
1 file changed, 85 insertions(+), 54 deletions(-)
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -7928,6 +7928,30 @@ static int ath11k_mac_start_vdev_delay(s
return 0;
}
+static int ath11k_mac_stop_vdev_early(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct ath11k *ar = hw->priv;
+ struct ath11k_base *ab = ar->ab;
+ struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
+ int ret;
+
+ if (WARN_ON(!arvif->is_started))
+ return -EBUSY;
+
+ ret = ath11k_mac_vdev_stop(arvif);
+ if (ret) {
+ ath11k_warn(ab, "failed to stop vdev %i: %d\n",
+ arvif->vdev_id, ret);
+ return ret;
+ }
+
+ arvif->is_started = false;
+
+ /* TODO: Setup ps and cts/rts protection */
+ return 0;
+}
+
static int
ath11k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
@@ -7972,15 +7996,17 @@ ath11k_mac_op_assign_vif_chanctx(struct
goto out;
}
- ret = ath11k_mac_vdev_start(arvif, ctx);
- if (ret) {
- ath11k_warn(ab, "failed to start vdev %i addr %pM on freq %d: %d\n",
- arvif->vdev_id, vif->addr,
- ctx->def.chan->center_freq, ret);
- goto out;
- }
+ if (!arvif->is_started) {
+ ret = ath11k_mac_vdev_start(arvif, ctx);
+ if (ret) {
+ ath11k_warn(ab, "failed to start vdev %i addr %pM on freq %d: %d\n",
+ arvif->vdev_id, vif->addr,
+ ctx->def.chan->center_freq, ret);
+ goto out;
+ }
- arvif->is_started = true;
+ arvif->is_started = true;
+ }
if (arvif->vdev_type != WMI_VDEV_TYPE_MONITOR &&
test_bit(ATH11K_FLAG_MONITOR_VDEV_CREATED, &ar->monitor_flags)) {
@@ -8020,8 +8046,6 @@ ath11k_mac_op_unassign_vif_chanctx(struc
"chanctx unassign ptr %p vdev_id %i\n",
ctx, arvif->vdev_id);
- WARN_ON(!arvif->is_started);
-
if (ab->hw_params.vdev_start_delay &&
arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) {
spin_lock_bh(&ab->base_lock);
@@ -8045,24 +8069,13 @@ ath11k_mac_op_unassign_vif_chanctx(struc
return;
}
- ret = ath11k_mac_vdev_stop(arvif);
- if (ret)
- ath11k_warn(ab, "failed to stop vdev %i: %d\n",
- arvif->vdev_id, ret);
-
- arvif->is_started = false;
-
- if (ab->hw_params.vdev_start_delay &&
- arvif->vdev_type == WMI_VDEV_TYPE_STA) {
- ret = ath11k_peer_delete(ar, arvif->vdev_id, arvif->bssid);
+ if (arvif->is_started) {
+ ret = ath11k_mac_vdev_stop(arvif);
if (ret)
- ath11k_warn(ar->ab,
- "failed to delete peer %pM for vdev %d: %d\n",
- arvif->bssid, arvif->vdev_id, ret);
- else
- ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
- "removed peer %pM vdev %d after vdev stop\n",
- arvif->bssid, arvif->vdev_id);
+ ath11k_warn(ab, "failed to stop vdev %i: %d\n",
+ arvif->vdev_id, ret);
+
+ arvif->is_started = false;
}
if (ab->hw_params.vdev_start_delay &&
@@ -9552,6 +9565,46 @@ exit:
return ret;
}
+static int ath11k_mac_station_remove(struct ath11k *ar,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct ath11k_base *ab = ar->ab;
+ struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
+ struct ath11k_sta *arsta = ath11k_sta_to_arsta(sta);
+ int ret;
+
+ if (ab->hw_params.vdev_start_delay &&
+ arvif->is_started &&
+ arvif->vdev_type != WMI_VDEV_TYPE_AP) {
+ ret = ath11k_mac_stop_vdev_early(ar->hw, vif);
+ if (ret) {
+ ath11k_warn(ab, "failed to do early vdev stop: %d\n", ret);
+ return ret;
+ }
+ }
+
+ ath11k_dp_peer_cleanup(ar, arvif->vdev_id, sta->addr);
+
+ ret = ath11k_peer_delete(ar, arvif->vdev_id, sta->addr);
+ if (ret)
+ ath11k_warn(ab, "Failed to delete peer: %pM for VDEV: %d\n",
+ sta->addr, arvif->vdev_id);
+ else
+ ath11k_dbg(ab, ATH11K_DBG_MAC, "Removed peer: %pM for VDEV: %d\n",
+ sta->addr, arvif->vdev_id);
+
+ ath11k_mac_dec_num_stations(arvif, sta);
+
+ kfree(arsta->tx_stats);
+ arsta->tx_stats = NULL;
+
+ kfree(arsta->rx_stats);
+ arsta->rx_stats = NULL;
+
+ return ret;
+}
+
static int ath11k_mac_op_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -9587,31 +9640,15 @@ static int ath11k_mac_op_sta_state(struc
sta->addr, arvif->vdev_id);
} else if ((old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_NOTEXIST)) {
- bool skip_peer_delete = ar->ab->hw_params.vdev_start_delay &&
- vif->type == NL80211_IFTYPE_STATION;
-
- ath11k_dp_peer_cleanup(ar, arvif->vdev_id, sta->addr);
-
- if (!skip_peer_delete) {
- ret = ath11k_peer_delete(ar, arvif->vdev_id, sta->addr);
- if (ret)
- ath11k_warn(ar->ab,
- "Failed to delete peer: %pM for VDEV: %d\n",
- sta->addr, arvif->vdev_id);
- else
- ath11k_dbg(ar->ab,
- ATH11K_DBG_MAC,
- "Removed peer: %pM for VDEV: %d\n",
- sta->addr, arvif->vdev_id);
- }
+ ret = ath11k_mac_station_remove(ar, vif, sta);
+ if (ret)
+ ath11k_warn(ar->ab, "Failed to remove station: %pM for VDEV: %d\n",
+ sta->addr, arvif->vdev_id);
- ath11k_mac_dec_num_stations(arvif, sta);
mutex_lock(&ar->ab->tbl_mtx_lock);
spin_lock_bh(&ar->ab->base_lock);
peer = ath11k_peer_find(ar->ab, arvif->vdev_id, sta->addr);
- if (skip_peer_delete && peer) {
- peer->sta = NULL;
- } else if (peer && peer->sta == sta) {
+ if (peer && peer->sta == sta) {
ath11k_warn(ar->ab, "Found peer entry %pM n vdev %i after it was supposedly removed\n",
vif->addr, arvif->vdev_id);
ath11k_peer_rhash_delete(ar->ab, peer);
@@ -9622,12 +9659,6 @@ static int ath11k_mac_op_sta_state(struc
}
spin_unlock_bh(&ar->ab->base_lock);
mutex_unlock(&ar->ab->tbl_mtx_lock);
-
- kfree(arsta->tx_stats);
- arsta->tx_stats = NULL;
-
- kfree(arsta->rx_stats);
- arsta->rx_stats = NULL;
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC &&
(vif->type == NL80211_IFTYPE_AP ||
@@ -10200,6 +10231,8 @@ static int __ath11k_mac_register(struct
wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
+ wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT);
+
ar->hw->queues = ATH11K_HW_MAX_QUEUES;
ar->hw->wiphy->tx_queue_len = ATH11K_QUEUE_LEN;
ar->hw->offchannel_tx_hw_queue = ATH11K_HW_MAX_QUEUES - 1;
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