diff options
| author | Yajun Deng <yajun.deng@linux.dev> | 2021-11-23 10:54:30 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-23 11:51:37 +0000 |
| commit | 1e84dc6b7bbfc4d1dd846decece4611b7e035772 (patch) | |
| tree | 08827418ecf758dd90a2f8cf6b0515e5bf0f07ec /include/net/neighbour.h | |
| parent | a0c2ccd9b5ad0a9e838158404e041b5a8ff762dd (diff) | |
neigh: introduce neigh_confirm() helper function
Add neigh_confirm() for the confirmed member in struct neighbour,
it can be called as an independent unit by other functions.
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/neighbour.h')
| -rw-r--r-- | include/net/neighbour.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/neighbour.h b/include/net/neighbour.h index 38a0c1d24570..55af812c3ed5 100644 --- a/include/net/neighbour.h +++ b/include/net/neighbour.h @@ -321,6 +321,17 @@ static inline struct neighbour *__neigh_lookup_noref(struct neigh_table *tbl, return ___neigh_lookup_noref(tbl, tbl->key_eq, tbl->hash, pkey, dev); } +static inline void neigh_confirm(struct neighbour *n) +{ + if (n) { + unsigned long now = jiffies; + + /* avoid dirtying neighbour */ + if (READ_ONCE(n->confirmed) != now) + WRITE_ONCE(n->confirmed, now); + } +} + void neigh_table_init(int index, struct neigh_table *tbl); int neigh_table_clear(int index, struct neigh_table *tbl); struct neighbour *neigh_lookup(struct neigh_table *tbl, const void *pkey, |