diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_extend.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_extend.c | 35 |
1 files changed, 2 insertions, 33 deletions
diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c index 6b772b804ee2..1296fda54ac6 100644 --- a/net/netfilter/nf_conntrack_extend.c +++ b/net/netfilter/nf_conntrack_extend.c @@ -25,8 +25,6 @@ #include <net/netfilter/nf_conntrack_act_ct.h> #include <net/netfilter/nf_nat.h> -static struct nf_ct_ext_type __rcu *nf_ct_ext_types[NF_CT_EXT_NUM]; -static DEFINE_MUTEX(nf_ct_ext_type_mutex); #define NF_CT_EXT_PREALLOC 128u /* conntrack events are on by default */ static const u8 nf_ct_ext_type_len[NF_CT_EXT_NUM] = { @@ -97,6 +95,8 @@ void *nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp) /* Conntrack must not be confirmed to avoid races on reallocation. */ WARN_ON(nf_ct_is_confirmed(ct)); + /* struct nf_ct_ext uses u8 to store offsets/size */ + BUILD_BUG_ON(total_extension_size() > 255u); if (ct->ext) { const struct nf_ct_ext *old = ct->ext; @@ -127,34 +127,3 @@ void *nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp) return (void *)new + newoff; } EXPORT_SYMBOL(nf_ct_ext_add); - -/* This MUST be called in process context. */ -int nf_ct_extend_register(const struct nf_ct_ext_type *type) -{ - int ret = 0; - - /* struct nf_ct_ext uses u8 to store offsets/size */ - BUILD_BUG_ON(total_extension_size() > 255u); - - mutex_lock(&nf_ct_ext_type_mutex); - if (nf_ct_ext_types[type->id]) { - ret = -EBUSY; - goto out; - } - - rcu_assign_pointer(nf_ct_ext_types[type->id], type); -out: - mutex_unlock(&nf_ct_ext_type_mutex); - return ret; -} -EXPORT_SYMBOL_GPL(nf_ct_extend_register); - -/* This MUST be called in process context. */ -void nf_ct_extend_unregister(const struct nf_ct_ext_type *type) -{ - mutex_lock(&nf_ct_ext_type_mutex); - RCU_INIT_POINTER(nf_ct_ext_types[type->id], NULL); - mutex_unlock(&nf_ct_ext_type_mutex); - synchronize_rcu(); -} -EXPORT_SYMBOL_GPL(nf_ct_extend_unregister); |