diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dst.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/net/core/dst.c b/net/core/dst.c index 13ba4a090c41..551834c3363f 100644 --- a/net/core/dst.c +++ b/net/core/dst.c @@ -300,18 +300,34 @@ void dst_release(struct dst_entry *dst) { if (dst) { int newrefcnt; - unsigned short nocache = dst->flags & DST_NOCACHE; + unsigned short destroy_after_rcu = dst->flags & + (DST_NOCACHE | DST_NOGC); newrefcnt = atomic_dec_return(&dst->__refcnt); if (unlikely(newrefcnt < 0)) net_warn_ratelimited("%s: dst:%p refcnt:%d\n", __func__, dst, newrefcnt); - if (!newrefcnt && unlikely(nocache)) + if (!newrefcnt && unlikely(destroy_after_rcu)) call_rcu(&dst->rcu_head, dst_destroy_rcu); } } EXPORT_SYMBOL(dst_release); +void dst_release_immediate(struct dst_entry *dst) +{ + if (dst) { + int newrefcnt; + + newrefcnt = atomic_dec_return(&dst->__refcnt); + if (unlikely(newrefcnt < 0)) + net_warn_ratelimited("%s: dst:%p refcnt:%d\n", + __func__, dst, newrefcnt); + if (!newrefcnt) + dst_destroy(dst); + } +} +EXPORT_SYMBOL(dst_release_immediate); + u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old) { struct dst_metrics *p = kmalloc(sizeof(*p), GFP_ATOMIC); |