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wifi: mac80211: handle debugfs when switching to/from MLO

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In MLO, we have a per-link debugfs directory which contains the
per-link files. In case of non-MLO we would like to put the per-link
files in the netdev directory to keep it how it was before MLO.

- Upon interface creation the netdev will be created with the per-link
  files in it.
- Upon switching to MLO: delete the entire netdev directory and then
  recreate it without the per-link files. Then the per-link directories
  with the per-link files in it will be created in ieee80211_link_init()
- Upon switching to non-MLO: delete the entire netdev directory
  (including the per-link directories) and recreate it with the per-link
  files in it.

Note that this also aligns to always call the vif link debugfs
method for the deflink as promised in the documentation, which
wasn't done before.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230928172905.082e698caca9.I5bef7b2026e0f58b4a958b3d1f459ac5baeccfc9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Miri Korenblit
2023-09-28 17:35:26 +03:00
committed by Johannes Berg
parent a1f5dcb1c0
commit c942398f95
5 changed files with 40 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
net/mac80211/debugfs_netdev.h
View File

@@ -1,4 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Portions:
* Copyright (C) 2023 Intel Corporation
*/
/* routines exported for debugfs handling */
#ifndef __IEEE80211_DEBUGFS_NETDEV_H
@@ -7,9 +11,12 @@
#include "ieee80211_i.h"
#ifdef CONFIG_MAC80211_DEBUGFS
void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata);
void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata,
bool mld_vif);
void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata);
void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata);
void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata,
bool mld_vif);
void ieee80211_link_debugfs_add(struct ieee80211_link_data *link);
void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link);
@@ -18,7 +25,7 @@ void ieee80211_link_debugfs_drv_add(struct ieee80211_link_data *link);
void ieee80211_link_debugfs_drv_remove(struct ieee80211_link_data *link);
#else
static inline void ieee80211_debugfs_add_netdev(
struct ieee80211_sub_if_data *sdata)
struct ieee80211_sub_if_data *sdata, bool mld_vif)
{}
static inline void ieee80211_debugfs_remove_netdev(
struct ieee80211_sub_if_data *sdata)
@@ -26,7 +33,9 @@ static inline void ieee80211_debugfs_remove_netdev(
static inline void ieee80211_debugfs_rename_netdev(
struct ieee80211_sub_if_data *sdata)
{}
static inline void ieee80211_debugfs_recreate_netdev(
struct ieee80211_sub_if_data *sdata, bool mld_vif)
{}
static inline void ieee80211_link_debugfs_add(struct ieee80211_link_data *link)
{}
static inline void ieee80211_link_debugfs_remove(struct ieee80211_link_data *link)