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The driver uses ieee80211_iterate_active_interfaces_atomic() and ieee80211_iterate_stations_atomic() in several places and does register accesses in the iterators. This doesn't cope with upcoming USB support as registers can only be accessed non-atomically. Split these into a two stage process: First use the atomic iterator functions to collect all active interfaces or stations on a list, then iterate over the list non-atomically and call the iterator on each entry. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Suggested-by: Ping-Ke shih <pkshih@realtek.com> Reviewed-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20221202081224.2779981-7-s.hauer@pengutronix.de
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/* Copyright(c) 2018-2019 Realtek Corporation
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*/
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#ifndef __RTW_UTIL_H__
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#define __RTW_UTIL_H__
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struct rtw_dev;
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#define rtw_iterate_vifs_atomic(rtwdev, iterator, data) \
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ieee80211_iterate_active_interfaces_atomic(rtwdev->hw, \
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IEEE80211_IFACE_ITER_NORMAL, iterator, data)
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#define rtw_iterate_stas_atomic(rtwdev, iterator, data) \
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ieee80211_iterate_stations_atomic(rtwdev->hw, iterator, data)
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#define rtw_iterate_keys(rtwdev, vif, iterator, data) \
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ieee80211_iter_keys(rtwdev->hw, vif, iterator, data)
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#define rtw_iterate_keys_rcu(rtwdev, vif, iterator, data) \
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ieee80211_iter_keys_rcu((rtwdev)->hw, vif, iterator, data)
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void rtw_iterate_vifs(struct rtw_dev *rtwdev,
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void (*iterator)(void *data, u8 *mac,
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struct ieee80211_vif *vif),
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void *data);
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void rtw_iterate_stas(struct rtw_dev *rtwdev,
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void (*iterator)(void *data,
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struct ieee80211_sta *sta),
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void *data);
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static inline u8 *get_hdr_bssid(struct ieee80211_hdr *hdr)
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{
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__le16 fc = hdr->frame_control;
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u8 *bssid;
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if (ieee80211_has_tods(fc))
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bssid = hdr->addr1;
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else if (ieee80211_has_fromds(fc))
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bssid = hdr->addr2;
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else
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bssid = hdr->addr3;
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return bssid;
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}
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#endif
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