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 /** @SKB_DROP_REASON_SUBSYS_NUM: number of subsystems defined */ 27 SKB_DROP_REASON_SUBSYS_NUM 28 }; 29 30 struct drop_reason_list { 31 const char * const *reasons; 32 size_t n_reasons; 33 }; 34 35 /* Note: due to dynamic registrations, access must be under RCU */ 36 extern const struct drop_reason_list __rcu * 37 drop_reasons_by_subsys[SKB_DROP_REASON_SUBSYS_NUM]; 38 39 void drop_reasons_register_subsys(enum skb_drop_reason_subsys subsys, 40 const struct drop_reason_list *list); 41 void drop_reasons_unregister_subsys(enum skb_drop_reason_subsys subsys); 42 43 #endif 44