diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_core.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 3a98a1316307..31399c53dfb1 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -571,7 +571,7 @@ static void nf_ct_del_from_dying_or_unconfirmed_list(struct nf_conn *ct) #define NFCT_ALIGN(len) (((len) + NFCT_INFOMASK) & ~NFCT_INFOMASK) -/* Released via destroy_conntrack() */ +/* Released via nf_ct_destroy() */ struct nf_conn *nf_ct_tmpl_alloc(struct net *net, const struct nf_conntrack_zone *zone, gfp_t flags) @@ -598,7 +598,7 @@ struct nf_conn *nf_ct_tmpl_alloc(struct net *net, tmpl->status = IPS_TEMPLATE; write_pnet(&tmpl->ct_net, net); nf_ct_zone_add(tmpl, zone); - atomic_set(&tmpl->ct_general.use, 0); + refcount_set(&tmpl->ct_general.use, 1); return tmpl; } @@ -625,13 +625,12 @@ static void destroy_gre_conntrack(struct nf_conn *ct) #endif } -static void -destroy_conntrack(struct nf_conntrack *nfct) +void nf_ct_destroy(struct nf_conntrack *nfct) { struct nf_conn *ct = (struct nf_conn *)nfct; - pr_debug("destroy_conntrack(%p)\n", ct); - WARN_ON(atomic_read(&nfct->use) != 0); + pr_debug("%s(%p)\n", __func__, ct); + WARN_ON(refcount_read(&nfct->use) != 0); if (unlikely(nf_ct_is_template(ct))) { nf_ct_tmpl_free(ct); @@ -656,9 +655,10 @@ destroy_conntrack(struct nf_conntrack *nfct) if (ct->master) nf_ct_put(ct->master); - pr_debug("destroy_conntrack: returning ct=%p to slab\n", ct); + pr_debug("%s: returning ct=%p to slab\n", __func__, ct); nf_conntrack_free(ct); } +EXPORT_SYMBOL(nf_ct_destroy); static void nf_ct_delete_from_lists(struct nf_conn *ct) { @@ -755,7 +755,7 @@ nf_ct_match(const struct nf_conn *ct1, const struct nf_conn *ct2) /* caller must hold rcu readlock and none of the nf_conntrack_locks */ static void nf_ct_gc_expired(struct nf_conn *ct) { - if (!atomic_inc_not_zero(&ct->ct_general.use)) + if (!refcount_inc_not_zero(&ct->ct_general.use)) return; if (nf_ct_should_gc(ct)) @@ -823,7 +823,7 @@ __nf_conntrack_find_get(struct net *net, const struct nf_conntrack_zone *zone, * in, try to obtain a reference and re-check tuple */ ct = nf_ct_tuplehash_to_ctrack(h); - if (likely(atomic_inc_not_zero(&ct->ct_general.use))) { + if (likely(refcount_inc_not_zero(&ct->ct_general.use))) { if (likely(nf_ct_key_equal(h, tuple, zone, net))) goto found; @@ -920,7 +920,7 @@ nf_conntrack_hash_check_insert(struct nf_conn *ct) smp_wmb(); /* The caller holds a reference to this object */ - atomic_set(&ct->ct_general.use, 2); + refcount_set(&ct->ct_general.use, 2); __nf_conntrack_hash_insert(ct, hash, reply_hash); nf_conntrack_double_unlock(hash, reply_hash); NF_CT_STAT_INC(net, insert); @@ -971,7 +971,7 @@ static void __nf_conntrack_insert_prepare(struct nf_conn *ct) { struct nf_conn_tstamp *tstamp; - atomic_inc(&ct->ct_general.use); + refcount_inc(&ct->ct_general.use); ct->status |= IPS_CONFIRMED; /* set conntrack timestamp, if enabled. */ @@ -1364,7 +1364,7 @@ static unsigned int early_drop_list(struct net *net, nf_ct_is_dying(tmp)) continue; - if (!atomic_inc_not_zero(&tmp->ct_general.use)) + if (!refcount_inc_not_zero(&tmp->ct_general.use)) continue; /* kill only if still in same netns -- might have moved due to @@ -1513,7 +1513,7 @@ static void gc_worker(struct work_struct *work) continue; /* need to take reference to avoid possible races */ - if (!atomic_inc_not_zero(&tmp->ct_general.use)) + if (!refcount_inc_not_zero(&tmp->ct_general.use)) continue; if (gc_worker_skip_ct(tmp)) { @@ -1622,7 +1622,7 @@ __nf_conntrack_alloc(struct net *net, /* Because we use RCU lookups, we set ct_general.use to zero before * this is inserted in any list. */ - atomic_set(&ct->ct_general.use, 0); + refcount_set(&ct->ct_general.use, 0); return ct; out: atomic_dec(&cnet->count); @@ -1647,7 +1647,7 @@ void nf_conntrack_free(struct nf_conn *ct) /* A freed object has refcnt == 0, that's * the golden rule for SLAB_TYPESAFE_BY_RCU */ - WARN_ON(atomic_read(&ct->ct_general.use) != 0); + WARN_ON(refcount_read(&ct->ct_general.use) != 0); nf_ct_ext_destroy(ct); kmem_cache_free(nf_conntrack_cachep, ct); @@ -1739,8 +1739,8 @@ init_conntrack(struct net *net, struct nf_conn *tmpl, if (!exp) __nf_ct_try_assign_helper(ct, tmpl, GFP_ATOMIC); - /* Now it is inserted into the unconfirmed list, bump refcount */ - nf_conntrack_get(&ct->ct_general); + /* Now it is inserted into the unconfirmed list, set refcount to 1. */ + refcount_set(&ct->ct_general.use, 1); nf_ct_add_to_unconfirmed_list(ct); local_bh_enable(); @@ -2352,7 +2352,7 @@ get_next_corpse(int (*iter)(struct nf_conn *i, void *data), return NULL; found: - atomic_inc(&ct->ct_general.use); + refcount_inc(&ct->ct_general.use); spin_unlock(lockp); local_bh_enable(); return ct; @@ -2825,7 +2825,7 @@ err_cachep: static struct nf_ct_hook nf_conntrack_hook = { .update = nf_conntrack_update, - .destroy = destroy_conntrack, + .destroy = nf_ct_destroy, .get_tuple_skb = nf_conntrack_get_tuple_skb, }; |