From: Benjamin Berg Date: Wed, 20 Dec 2023 02:38:01 +0000 (+0200) Subject: wifi: mac80211: add/remove driver debugfs entries as appropriate X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0a3d898ee9a8303d5b3982b97ef0703919c3ea76;p=linux.git wifi: mac80211: add/remove driver debugfs entries as appropriate When an interface is removed, we should also be deleting the driver debugfs entries (as it might still exist in DOWN state in mac80211). At the same time, when adding an interface, we can check the IEEE80211_SDATA_IN_DRIVER flag to know whether the interface was previously known to the driver and is simply being reconfigured. Fixes: a1f5dcb1c0c1 ("wifi: mac80211: add a driver callback to add vif debugfs") Signed-off-by: Benjamin Berg Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20231220043149.a9f64c359424.I7076526b5297ae8f832228079c999f7b8e147a4c@changeid Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 80aeb25f1b68d..dce5606ed66da 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -1043,9 +1043,12 @@ void ieee80211_debugfs_recreate_netdev(struct ieee80211_sub_if_data *sdata, { ieee80211_debugfs_remove_netdev(sdata); ieee80211_debugfs_add_netdev(sdata, mld_vif); - drv_vif_add_debugfs(sdata->local, sdata); - if (!mld_vif) - ieee80211_link_debugfs_drv_add(&sdata->deflink); + + if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) { + drv_vif_add_debugfs(sdata->local, sdata); + if (!mld_vif) + ieee80211_link_debugfs_drv_add(&sdata->deflink); + } } void ieee80211_link_debugfs_add(struct ieee80211_link_data *link) diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c index 5e0435db2f9ce..3b7f70073fc37 100644 --- a/net/mac80211/driver-ops.c +++ b/net/mac80211/driver-ops.c @@ -75,9 +75,9 @@ int drv_add_interface(struct ieee80211_local *local, if (ret) return ret; - sdata->flags |= IEEE80211_SDATA_IN_DRIVER; + if (!(sdata->flags & IEEE80211_SDATA_IN_DRIVER)) { + sdata->flags |= IEEE80211_SDATA_IN_DRIVER; - if (!local->in_reconfig && !local->resuming) { drv_vif_add_debugfs(local, sdata); /* initially vif is not MLD */ ieee80211_link_debugfs_drv_add(&sdata->deflink); @@ -113,9 +113,13 @@ void drv_remove_interface(struct ieee80211_local *local, if (!check_sdata_in_driver(sdata)) return; + sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; + + /* Remove driver debugfs entries */ + ieee80211_debugfs_recreate_netdev(sdata, sdata->vif.valid_links); + trace_drv_remove_interface(local, sdata); local->ops->remove_interface(&local->hw, &sdata->vif); - sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; trace_drv_return_void(local); }