xref: /openbmc/linux/include/net/dropreason.h (revision 9d802da4)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 
3 #ifndef _LINUX_DROPREASON_H
4 #define _LINUX_DROPREASON_H
5 #include <net/dropreason-core.h>
6 
7 /**
8  * enum skb_drop_reason_subsys - subsystem tag for (extended) drop reasons
9  */
10 enum skb_drop_reason_subsys {
11 	/** @SKB_DROP_REASON_SUBSYS_CORE: core drop reasons defined above */
12 	SKB_DROP_REASON_SUBSYS_CORE,
13 
14 	/**
15 	 * @SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE: mac80211 drop reasons
16 	 * for unusable frames, see net/mac80211/drop.h
17 	 */
18 	SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE,
19 
20 	/**
21 	 * @SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR: mac80211 drop reasons
22 	 * for frames still going to monitor, see net/mac80211/drop.h
23 	 */
24 	SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR,
25 
26 	/**
27 	 * @SKB_DROP_REASON_SUBSYS_OPENVSWITCH: openvswitch drop reasons,
28 	 * see net/openvswitch/drop.h
29 	 */
30 	SKB_DROP_REASON_SUBSYS_OPENVSWITCH,
31 
32 	/** @SKB_DROP_REASON_SUBSYS_NUM: number of subsystems defined */
33 	SKB_DROP_REASON_SUBSYS_NUM
34 };
35 
36 struct drop_reason_list {
37 	const char * const *reasons;
38 	size_t n_reasons;
39 };
40 
41 /* Note: due to dynamic registrations, access must be under RCU */
42 extern const struct drop_reason_list __rcu *
43 drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM];
44 
45 void drop_reasons_register_subsys(enum skb_drop_reason_subsys subsys,
46 				  const struct drop_reason_list *list);
47 void drop_reasons_unregister_subsys(enum skb_drop_reason_subsys subsys);
48 
49 #endif
50