diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2023-01-18 10:51:52 +0100 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2023-01-19 20:01:41 +0200 |
| commit | dc09766c755c5b06d71fe5d2f4f3d431540eaae0 (patch) | |
| tree | d9f948955f7460d402c4f2e659b88d692d339769 | |
| parent | 82253ddaff582147cd3fd0e629c4e65d62b1d015 (diff) | |
wifi: wireless: warn on most wireless extension usage
With WiFi 7 (802.11ax, MLO/EHT) around the corner, we're going to
remove support for wireless extensions with new devices since MLO
(multi-link operation) cannot be properly indicated using them.
Add a warning to indicate which processes are still using wireless
extensions, if being used with modern (i.e. cfg80211) drivers.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230118105152.a7158a929a6f.Ifcf30eeeb8fc7019e4dcf2782b04515254d165e1@changeid
| -rw-r--r-- | net/wireless/wext-core.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c index fe8765c4075d..6e5f5ea92ddb 100644 --- a/net/wireless/wext-core.c +++ b/net/wireless/wext-core.c @@ -636,7 +636,15 @@ void wireless_send_event(struct net_device * dev, } EXPORT_SYMBOL(wireless_send_event); +#ifdef CONFIG_CFG80211_WEXT +static void wireless_warn_cfg80211_wext(void) +{ + char name[sizeof(current->comm)]; + pr_warn_ratelimited("warning: `%s' uses wireless extensions that are deprecated for modern drivers; use nl80211\n", + get_task_comm(name, current)); +} +#endif /* IW handlers */ @@ -652,8 +660,10 @@ struct iw_statistics *get_wireless_stats(struct net_device *dev) if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy && dev->ieee80211_ptr->wiphy->wext && - dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) + dev->ieee80211_ptr->wiphy->wext->get_wireless_stats) { + wireless_warn_cfg80211_wext(); return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev); + } #endif /* not found */ @@ -690,8 +700,10 @@ static iw_handler get_handler(struct net_device *dev, unsigned int cmd) const struct iw_handler_def *handlers = NULL; #ifdef CONFIG_CFG80211_WEXT - if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy) + if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy) { + wireless_warn_cfg80211_wext(); handlers = dev->ieee80211_ptr->wiphy->wext; + } #endif #ifdef CONFIG_WIRELESS_EXT if (dev->wireless_handlers) |