diff options
Diffstat (limited to 'nest/rt-attr.c')
| -rw-r--r-- | nest/rt-attr.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/nest/rt-attr.c b/nest/rt-attr.c index cd4c6892..20f9835d 100644 --- a/nest/rt-attr.c +++ b/nest/rt-attr.c @@ -1287,7 +1287,7 @@ rta_lookup(rta *o) for(r=rta_hash_table[h & rta_cache_mask]; r; r=r->next) if (r->hash_key == h && rta_same(r, o)) { - r->uc++; + atomic_fetch_add_explicit(&r->uc, 1, memory_order_acq_rel); RTA_UNLOCK; return r; } @@ -1308,6 +1308,14 @@ rta_lookup(rta *o) void rta__free(rta *a) { + RTA_LOCK; + if (atomic_load_explicit(&a->uc, memory_order_acquire)) + { + /* Somebody has cloned this rta inbetween. This sometimes happens. */ + RTA_UNLOCK; + return; + } + ASSERT(rta_cache_count && a->cached); rta_cache_count--; *a->pprev = a->next; @@ -1319,6 +1327,7 @@ rta__free(rta *a) ea_free(a->eattrs); a->cached = 0; sl_free(rta_slab(a), a); + RTA_UNLOCK; } rta * |