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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/net/ipv4/fib_lookup.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _FIB_LOOKUP_H

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#define _FIB_LOOKUP_H

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#include <linux/types.h>

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#include <linux/list.h>

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#include <net/inet_dscp.h>

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#include <net/ip_fib.h>

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#include <net/nexthop.h>

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struct fib_alias {

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	struct hlist_node	fa_list;

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	struct fib_info		*fa_info;

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	dscp_t			fa_dscp;

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	u8			fa_type;

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	u8			fa_state;

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	u8			fa_slen;

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	u32			tb_id;

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	s16			fa_default;

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	u8			offload;

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	u8			trap;

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	u8			offload_failed;

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	struct rcu_head		rcu;

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};

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#define FA_S_ACCESSED	0x01

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/* Don't write on fa_state unless needed, to keep it shared on all cpus */

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static inline void fib_alias_accessed(struct fib_alias *fa)

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{

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	if (!(fa->fa_state & FA_S_ACCESSED))

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		fa->fa_state |= FA_S_ACCESSED;

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}

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/* Exported by fib_semantics.c */

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void fib_release_info(struct fib_info *);

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struct fib_info *fib_create_info(struct fib_config *cfg,

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				 struct netlink_ext_ack *extack);

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int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi,

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		 struct netlink_ext_ack *extack);

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bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);

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int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,

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		  const struct fib_rt_info *fri, unsigned int flags);

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void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,

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	       u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);

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size_t fib_nlmsg_size(struct fib_info *fi);

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static inline void fib_result_assign(struct fib_result *res,

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				     struct fib_info *fi)

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{

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	/* we used to play games with refcounts, but we now use RCU */

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	res->fi = fi;

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	res->nhc = fib_info_nhc(fi, 0);

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}

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struct fib_prop {

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	int	error;

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	u8	scope;

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};

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extern const struct fib_prop fib_props[RTN_MAX + 1];

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#endif /* _FIB_LOOKUP_H */

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