forked from Minki/linux
eba618abac
Most of the ipv4 code only needs data from fib_nh_common. Add
fib_nh_common selection to fib_result and update users to use it.
Right now, fib_nh_common in fib_result will point to a fib_nh struct
that is embedded within a fib_info:
fib_info --> fib_nh
fib_nh
...
fib_nh
^
fib_result->nhc ----+
Later, nhc can point to a fib_nh within a nexthop struct:
fib_info --> nexthop --> fib_nh
^
fib_result->nhc ---------------+
or for a nexthop group:
fib_info --> nexthop --> nexthop --> fib_nh
nexthop --> fib_nh
...
nexthop --> fib_nh
^
fib_result->nhc ---------------------------+
In all cases nhsel within fib_result will point to which leg in the
multipath route is used.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _FIB_LOOKUP_H
|
|
#define _FIB_LOOKUP_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <net/ip_fib.h>
|
|
|
|
struct fib_alias {
|
|
struct hlist_node fa_list;
|
|
struct fib_info *fa_info;
|
|
u8 fa_tos;
|
|
u8 fa_type;
|
|
u8 fa_state;
|
|
u8 fa_slen;
|
|
u32 tb_id;
|
|
s16 fa_default;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
#define FA_S_ACCESSED 0x01
|
|
|
|
/* Dont write on fa_state unless needed, to keep it shared on all cpus */
|
|
static inline void fib_alias_accessed(struct fib_alias *fa)
|
|
{
|
|
if (!(fa->fa_state & FA_S_ACCESSED))
|
|
fa->fa_state |= FA_S_ACCESSED;
|
|
}
|
|
|
|
/* Exported by fib_semantics.c */
|
|
void fib_release_info(struct fib_info *);
|
|
struct fib_info *fib_create_info(struct fib_config *cfg,
|
|
struct netlink_ext_ack *extack);
|
|
int fib_nh_match(struct fib_config *cfg, struct fib_info *fi,
|
|
struct netlink_ext_ack *extack);
|
|
bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
|
|
int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id,
|
|
u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi,
|
|
unsigned int);
|
|
void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
|
|
u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
|
|
|
|
static inline void fib_result_assign(struct fib_result *res,
|
|
struct fib_info *fi)
|
|
{
|
|
/* we used to play games with refcounts, but we now use RCU */
|
|
res->fi = fi;
|
|
res->nhc = fib_info_nhc(fi, 0);
|
|
}
|
|
|
|
struct fib_prop {
|
|
int error;
|
|
u8 scope;
|
|
};
|
|
|
|
extern const struct fib_prop fib_props[RTN_MAX + 1];
|
|
|
|
#endif /* _FIB_LOOKUP_H */
|