mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 15:41:36 +00:00
1f1b9c9990
After commit ebc0ffae5 (RCU conversion of fib_lookup()),
fib_result_assign() should not change fib refcounts anymore.
Thanks to Michael who did the bisection and bug report.
Reported-by: Michael Ellerman <michael@ellerman.id.au>
Tested-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#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 list_head fa_list;
|
|
struct fib_info *fa_info;
|
|
u8 fa_tos;
|
|
u8 fa_type;
|
|
u8 fa_scope;
|
|
u8 fa_state;
|
|
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 */
|
|
extern int fib_semantic_match(struct list_head *head,
|
|
const struct flowi *flp,
|
|
struct fib_result *res, int prefixlen, int fib_flags);
|
|
extern void fib_release_info(struct fib_info *);
|
|
extern struct fib_info *fib_create_info(struct fib_config *cfg);
|
|
extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
|
|
extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
|
|
u32 tb_id, u8 type, u8 scope, __be32 dst,
|
|
int dst_len, u8 tos, struct fib_info *fi,
|
|
unsigned int);
|
|
extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
|
|
int dst_len, u32 tb_id, struct nl_info *info,
|
|
unsigned int nlm_flags);
|
|
extern struct fib_alias *fib_find_alias(struct list_head *fah,
|
|
u8 tos, u32 prio);
|
|
extern int fib_detect_death(struct fib_info *fi, int order,
|
|
struct fib_info **last_resort,
|
|
int *last_idx, int dflt);
|
|
|
|
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;
|
|
}
|
|
|
|
#endif /* _FIB_LOOKUP_H */
|