1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _FIB_LOOKUP_H 3 #define _FIB_LOOKUP_H 4 5 #include <linux/types.h> 6 #include <linux/list.h> 7 #include <net/ip_fib.h> 8 9 struct fib_alias { 10 struct hlist_node fa_list; 11 struct fib_info *fa_info; 12 u8 fa_tos; 13 u8 fa_type; 14 u8 fa_state; 15 u8 fa_slen; 16 u32 tb_id; 17 s16 fa_default; 18 struct rcu_head rcu; 19 }; 20 21 #define FA_S_ACCESSED 0x01 22 23 /* Dont write on fa_state unless needed, to keep it shared on all cpus */ 24 static inline void fib_alias_accessed(struct fib_alias *fa) 25 { 26 if (!(fa->fa_state & FA_S_ACCESSED)) 27 fa->fa_state |= FA_S_ACCESSED; 28 } 29 30 /* Exported by fib_semantics.c */ 31 void fib_release_info(struct fib_info *); 32 struct fib_info *fib_create_info(struct fib_config *cfg, 33 struct netlink_ext_ack *extack); 34 int fib_nh_match(struct fib_config *cfg, struct fib_info *fi, 35 struct netlink_ext_ack *extack); 36 bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi); 37 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id, 38 u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi, 39 unsigned int); 40 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len, 41 u32 tb_id, const struct nl_info *info, unsigned int nlm_flags); 42 43 static inline void fib_result_assign(struct fib_result *res, 44 struct fib_info *fi) 45 { 46 /* we used to play games with refcounts, but we now use RCU */ 47 res->fi = fi; 48 res->nhc = fib_info_nhc(fi, 0); 49 } 50 51 struct fib_prop { 52 int error; 53 u8 scope; 54 }; 55 56 extern const struct fib_prop fib_props[RTN_MAX + 1]; 57 58 #endif /* _FIB_LOOKUP_H */ 59