mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 02:04:05 +08:00
a6501e080c
Currently, sizeof(struct fib_alias) is 24 or 48 bytes on 32/64 bits arches. Because of SLAB_HWCACHE_ALIGN requirement, these are rounded to 32 and 64 bytes respectively. This patch moves rcu to the end of fib_alias, and conditionally defines it only for CONFIG_IP_FIB_TRIE. We also remove SLAB_HWCACHE_ALIGN requirement for fib_alias and fib_node objects because it is not necessary. (BTW SLUB currently denies it for objects smaller than cache_line_size() / 2, but not SLAB) Finally, sizeof(fib_alias) go back to 16 and 32 bytes. Then, we can embed one fib_alias on each fib_node, to favor locality. Most of the time access to the fib_alias will be free because one cache line contains both the list head (fn_alias) and (one of) the list element. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
54 lines
1.5 KiB
C
54 lines
1.5 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;
|
|
#ifdef CONFIG_IP_FIB_TRIE
|
|
struct rcu_head rcu;
|
|
#endif
|
|
};
|
|
|
|
#define FA_S_ACCESSED 0x01
|
|
|
|
/* Exported by fib_semantics.c */
|
|
extern int fib_semantic_match(struct list_head *head,
|
|
const struct flowi *flp,
|
|
struct fib_result *res, __be32 zone, __be32 mask,
|
|
int prefixlen);
|
|
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)
|
|
{
|
|
if (res->fi != NULL)
|
|
fib_info_put(res->fi);
|
|
res->fi = fi;
|
|
if (fi != NULL)
|
|
atomic_inc(&fi->fib_clntref);
|
|
}
|
|
|
|
#endif /* _FIB_LOOKUP_H */
|