LXR linux/drivers/net/wireless/mediatek/mt76/util.h

   1/*
   2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   3 * Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License version 2
   7 * as published by the Free Software Foundation
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 */
  14
  15#ifndef __MT76_UTIL_H
  16#define __MT76_UTIL_H
  17
  18#include <linux/skbuff.h>
  19#include <linux/bitops.h>
  20#include <linux/bitfield.h>
  21
  22#define MT76_INCR(_var, _size) \
  23        _var = (((_var) + 1) % _size)
  24
  25int mt76_wcid_alloc(unsigned long *mask, int size);
  26
  27static inline void
  28mt76_wcid_free(unsigned long *mask, int idx)
  29{
  30        mask[idx / BITS_PER_LONG] &= ~BIT(idx % BITS_PER_LONG);
  31}
  32
  33static inline void
  34mt76_skb_set_moredata(struct sk_buff *skb, bool enable)
  35{
  36        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
  37
  38        if (enable)
  39                hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
  40        else
  41                hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
  42}
  43
  44#endif
  45