net/mac80211/drop.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * mac80211 drop reason list
   4  *
   5  * Copyright (C) 2023 Intel Corporation
   6  */
   7
   8 #ifndef MAC80211_DROP_H
   9 #define MAC80211_DROP_H
  10 #include <net/dropreason.h>
  11
  12 typedef unsigned int __bitwise ieee80211_rx_result;
  13
  14 #define MAC80211_DROP_REASONS_MONITOR(R)        \
  15         R(RX_DROP_M_UNEXPECTED_4ADDR_FRAME)     \
  16         R(RX_DROP_M_BAD_BCN_KEYIDX)             \
  17         R(RX_DROP_M_BAD_MGMT_KEYIDX)            \
  18 /* this line for the trailing \ - add before this */
  19
  20 #define MAC80211_DROP_REASONS_UNUSABLE(R)       \
  21         R(RX_DROP_U_MIC_FAIL)                   \
  22         R(RX_DROP_U_REPLAY)                     \
  23         R(RX_DROP_U_BAD_MMIE)                   \
  24 /* this line for the trailing \ - add before this */
  25
  26 /* having two enums allows for checking ieee80211_rx_result use with sparse */
  27 enum ___mac80211_drop_reason {
  28 /* if we get to the end of handlers with RX_CONTINUE this will be the reason */
  29         ___RX_CONTINUE  = SKB_CONSUMED,
  30
  31 /* this never gets used as an argument to kfree_skb_reason() */
  32         ___RX_QUEUED    = SKB_NOT_DROPPED_YET,
  33
  34 #define ENUM(x) ___ ## x,
  35         ___RX_DROP_MONITOR = SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR <<
  36                 SKB_DROP_REASON_SUBSYS_SHIFT,
  37         MAC80211_DROP_REASONS_MONITOR(ENUM)
  38
  39         ___RX_DROP_UNUSABLE = SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE <<
  40                 SKB_DROP_REASON_SUBSYS_SHIFT,
  41         MAC80211_DROP_REASONS_UNUSABLE(ENUM)
  42 #undef ENUM
  43 };
  44
  45 enum mac80211_drop_reason {
  46         RX_CONTINUE      = (__force ieee80211_rx_result)___RX_CONTINUE,
  47         RX_QUEUED        = (__force ieee80211_rx_result)___RX_QUEUED,
  48         RX_DROP_MONITOR  = (__force ieee80211_rx_result)___RX_DROP_MONITOR,
  49         RX_DROP_UNUSABLE = (__force ieee80211_rx_result)___RX_DROP_UNUSABLE,
  50 #define DEF(x) x = (__force ieee80211_rx_result)___ ## x,
  51         MAC80211_DROP_REASONS_MONITOR(DEF)
  52         MAC80211_DROP_REASONS_UNUSABLE(DEF)
  53 #undef DEF
  54 };
  55
  56 #endif /* MAC80211_DROP_H */