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 #include <net/nexthop.h> 9 10 struct fib_alias { 11 struct hlist_node fa_list; 12 struct fib_info *fa_info; 13 u8 fa_tos; 14 u8 fa_type; 15 u8 fa_state; 16 u8 fa_slen; 17 u32 tb_id; 18 s16 fa_default; 19 u8 offload:1, 20 trap:1, 21 offload_failed:1, 22 unused:5; 23 struct rcu_head rcu; 24 }; 25 26 #define FA_S_ACCESSED 0x01 27 28 /* Don't write on fa_state unless needed, to keep it shared on all cpus */ 29 static inline void fib_alias_accessed(struct fib_alias *fa) 30 { 31 if (!(fa->fa_state & FA_S_ACCESSED)) 32 fa->fa_state |= FA_S_ACCESSED; 33 } 34 35 /* Exported by fib_semantics.c */ 36 void fib_release_info(struct fib_info *); 37 struct fib_info *fib_create_info(struct fib_config *cfg, 38 struct netlink_ext_ack *extack); 39 int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi, 40 struct netlink_ext_ack *extack); 41 bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi); 42 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, 43 const struct fib_rt_info *fri, unsigned int flags); 44 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len, 45 u32 tb_id, const struct nl_info *info, unsigned int nlm_flags); 46 size_t fib_nlmsg_size(struct fib_info *fi); 47 48 static inline void fib_result_assign(struct fib_result *res, 49 struct fib_info *fi) 50 { 51 /* we used to play games with refcounts, but we now use RCU */ 52 res->fi = fi; 53 res->nhc = fib_info_nhc(fi, 0); 54 } 55 56 struct fib_prop { 57 int error; 58 u8 scope; 59 }; 60 61 extern const struct fib_prop fib_props[RTN_MAX + 1]; 62 63 #endif /* _FIB_LOOKUP_H */ 64