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
  25 int mt76_wcid_alloc(unsigned long *mask, int size);
  26
  27 static inline void
  28 mt76_wcid_free(unsigned long *mask, int idx)
  29 {
  30         mask[idx / BITS_PER_LONG] &= ~BIT(idx % BITS_PER_LONG);
  31 }
  32
  33 static inline void
  34 mt76_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