6.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Berg <benjamin.berg@xxxxxxxxx>
commit 556857aa1d0855aba02b1c63bc52b91ec63fc2cc upstream.
mac80211 started to delete debugfs entries in certain cases, causing a
ath11k to crash when it tried to delete the entries later. Fix this by
relying on mac80211 to delete the entries when appropriate and adding
them from the vif_add_debugfs handler.
Fixes: 0a3d898ee9a8 ("wifi: mac80211: add/remove driver debugfs entries as appropriate")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218364
Signed-off-by: Benjamin Berg <benjamin.berg@xxxxxxxxx>
Acked-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://msgid.link/20240115101805.1277949-1-benjamin@xxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/core.h | 4 ----
drivers/net/wireless/ath/ath11k/debugfs.c | 25 ++++++++++---------------
drivers/net/wireless/ath/ath11k/debugfs.h | 12 ++----------
drivers/net/wireless/ath/ath11k/mac.c | 12 +-----------
4 files changed, 13 insertions(+), 40 deletions(-)
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -368,10 +368,6 @@ struct ath11k_vif {
struct ieee80211_chanctx_conf chanctx;
struct ath11k_arp_ns_offload arp_ns_offload;
struct ath11k_rekey_data rekey_data;
-
-#ifdef CONFIG_ATH11K_DEBUGFS
- struct dentry *debugfs_twt;
-#endif /* CONFIG_ATH11K_DEBUGFS */
};
struct ath11k_vif_iter {
--- a/drivers/net/wireless/ath/ath11k/debugfs.c
+++ b/drivers/net/wireless/ath/ath11k/debugfs.c
@@ -1893,35 +1893,30 @@ static const struct file_operations ath1
.open = simple_open
};
-void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
+void ath11k_debugfs_op_vif_add(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
{
+ struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
struct ath11k_base *ab = arvif->ar->ab;
+ struct dentry *debugfs_twt;
if (arvif->vif->type != NL80211_IFTYPE_AP &&
!(arvif->vif->type == NL80211_IFTYPE_STATION &&
test_bit(WMI_TLV_SERVICE_STA_TWT, ab->wmi_ab.svc_map)))
return;
- arvif->debugfs_twt = debugfs_create_dir("twt",
- arvif->vif->debugfs_dir);
- debugfs_create_file("add_dialog", 0200, arvif->debugfs_twt,
+ debugfs_twt = debugfs_create_dir("twt",
+ arvif->vif->debugfs_dir);
+ debugfs_create_file("add_dialog", 0200, debugfs_twt,
arvif, &ath11k_fops_twt_add_dialog);
- debugfs_create_file("del_dialog", 0200, arvif->debugfs_twt,
+ debugfs_create_file("del_dialog", 0200, debugfs_twt,
arvif, &ath11k_fops_twt_del_dialog);
- debugfs_create_file("pause_dialog", 0200, arvif->debugfs_twt,
+ debugfs_create_file("pause_dialog", 0200, debugfs_twt,
arvif, &ath11k_fops_twt_pause_dialog);
- debugfs_create_file("resume_dialog", 0200, arvif->debugfs_twt,
+ debugfs_create_file("resume_dialog", 0200, debugfs_twt,
arvif, &ath11k_fops_twt_resume_dialog);
}
-void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
-{
- if (!arvif->debugfs_twt)
- return;
-
- debugfs_remove_recursive(arvif->debugfs_twt);
- arvif->debugfs_twt = NULL;
-}
--- a/drivers/net/wireless/ath/ath11k/debugfs.h
+++ b/drivers/net/wireless/ath/ath11k/debugfs.h
@@ -306,8 +306,8 @@ static inline int ath11k_debugfs_rx_filt
return ar->debug.rx_filter;
}
-void ath11k_debugfs_add_interface(struct ath11k_vif *arvif);
-void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif);
+void ath11k_debugfs_op_vif_add(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif);
void ath11k_debugfs_add_dbring_entry(struct ath11k *ar,
enum wmi_direct_buffer_module id,
enum ath11k_dbg_dbr_event event,
@@ -386,14 +386,6 @@ static inline int ath11k_debugfs_get_fw_
return 0;
}
-static inline void ath11k_debugfs_add_interface(struct ath11k_vif *arvif)
-{
-}
-
-static inline void ath11k_debugfs_remove_interface(struct ath11k_vif *arvif)
-{
-}
-
static inline void
ath11k_debugfs_add_dbring_entry(struct ath11k *ar,
enum wmi_direct_buffer_module id,
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -6750,13 +6750,6 @@ static int ath11k_mac_op_add_interface(s
goto err;
}
- /* In the case of hardware recovery, debugfs files are
- * not deleted since ieee80211_ops.remove_interface() is
- * not invoked. In such cases, try to delete the files.
- * These will be re-created later.
- */
- ath11k_debugfs_remove_interface(arvif);
-
memset(arvif, 0, sizeof(*arvif));
arvif->ar = ar;
@@ -6933,8 +6926,6 @@ static int ath11k_mac_op_add_interface(s
ath11k_dp_vdev_tx_attach(ar, arvif);
- ath11k_debugfs_add_interface(arvif);
-
if (vif->type != NL80211_IFTYPE_MONITOR &&
test_bit(ATH11K_FLAG_MONITOR_CONF_ENABLED, &ar->monitor_flags)) {
ret = ath11k_mac_monitor_vdev_create(ar);
@@ -7050,8 +7041,6 @@ err_vdev_del:
/* Recalc txpower for remaining vdev */
ath11k_mac_txpower_recalc(ar);
- ath11k_debugfs_remove_interface(arvif);
-
/* TODO: recal traffic pause state based on the available vdevs */
mutex_unlock(&ar->conf_mutex);
@@ -9149,6 +9138,7 @@ static const struct ieee80211_ops ath11k
#endif
#ifdef CONFIG_ATH11K_DEBUGFS
+ .vif_add_debugfs = ath11k_debugfs_op_vif_add,
.sta_add_debugfs = ath11k_debugfs_sta_op_add,
#endif
