xref: /openbmc/linux/net/mac80211/drop.h (revision 2fa71edb)
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 #define RX_RES_IS_UNUSABLE(result)	\
57 	(((__force u32)(result) & SKB_DROP_REASON_SUBSYS_MASK) == ___RX_DROP_UNUSABLE)
58 
59 #endif /* MAC80211_DROP_H */
60