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Pattern match is an option of WoWLAN to allow the device to be woken up from suspend mode when receiving packets matched user-designed patterns. The patterns are written into hardware via WoWLAN firmware in suspend flow if users have set up them. If packets matched designed pattern are received, WoWLAN firmware will send an interrupt and then wake up the device. Signed-off-by: Chin-Yen Lee <timlee@realtek.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20221027052707.14605-8-pkshih@realtek.com
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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* Copyright(c) 2019-2020 Realtek Corporation
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*/
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#ifndef __RTW89_UTIL_H__
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#define __RTW89_UTIL_H__
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#include "core.h"
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#define rtw89_iterate_vifs_bh(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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/* call this function with rtwdev->mutex is held */
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#define rtw89_for_each_rtwvif(rtwdev, rtwvif) \
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list_for_each_entry(rtwvif, &(rtwdev)->rtwvifs_list, list)
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/* The result of negative dividend and positive divisor is undefined, but it
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* should be one case of round-down or round-up. So, make it round-down if the
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* result is round-up.
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* Note: the maximum value of divisor is 0x7FFF_FFFF, because we cast it to
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* signed value to make compiler to use signed divide instruction.
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*/
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static inline s32 s32_div_u32_round_down(s32 dividend, u32 divisor, s32 *remainder)
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{
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s32 i_divisor = (s32)divisor;
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s32 i_remainder;
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s32 quotient;
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quotient = dividend / i_divisor;
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i_remainder = dividend % i_divisor;
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if (i_remainder < 0) {
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quotient--;
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i_remainder += i_divisor;
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}
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if (remainder)
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*remainder = i_remainder;
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return quotient;
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}
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static inline s32 s32_div_u32_round_closest(s32 dividend, u32 divisor)
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{
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return s32_div_u32_round_down(dividend + divisor / 2, divisor, NULL);
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}
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static inline void ether_addr_copy_mask(u8 *dst, const u8 *src, u8 mask)
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{
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int i;
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eth_zero_addr(dst);
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for (i = 0; i < ETH_ALEN; i++) {
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if (mask & BIT(i))
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dst[i] = src[i];
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}
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}
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#endif
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