From acb99b9b2a08f439a13eafffd2a59b798d983462 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Tue, 28 Dec 2021 22:14:53 +0100 Subject: mac80211: Add stations iterator where the iterator function may sleep ieee80211_iterate_active_interfaces() and ieee80211_iterate_active_interfaces_atomic() already exist, where the former allows the iterator function to sleep. Add ieee80211_iterate_stations() which is similar to ieee80211_iterate_stations_atomic() but allows the iterator to sleep. This is needed for adding SDIO support to the rtw88 driver. Some interators there are reading or writing registers. With the SDIO ops (sdio_readb, sdio_writeb and friends) this means that the iterator function may sleep. Signed-off-by: Martin Blumenstingl Link: https://lore.kernel.org/r/20211228211501.468981-2-martin.blumenstingl@googlemail.com Signed-off-by: Johannes Berg --- net/mac80211/util.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'net/mac80211/util.c') diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 0e4e1956bcea..f71b042a5c8b 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -862,6 +862,19 @@ static void __iterate_stations(struct ieee80211_local *local, } } +void ieee80211_iterate_stations(struct ieee80211_hw *hw, + void (*iterator)(void *data, + struct ieee80211_sta *sta), + void *data) +{ + struct ieee80211_local *local = hw_to_local(hw); + + mutex_lock(&local->sta_mtx); + __iterate_stations(local, iterator, data); + mutex_unlock(&local->sta_mtx); +} +EXPORT_SYMBOL_GPL(ieee80211_iterate_stations); + void ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw, void (*iterator)(void *data, struct ieee80211_sta *sta), -- cgit v1.2.3