netfilter: nf_tables: constify chain type definitions and pointers
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 7d6a226..acdd9d6 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -124,9 +124,9 @@
return ++table->hgenerator;
}
-static struct nf_chain_type *chain_type[AF_MAX][NFT_CHAIN_T_MAX];
+static const struct nf_chain_type *chain_type[AF_MAX][NFT_CHAIN_T_MAX];
-static struct nf_chain_type *
+static const struct nf_chain_type *
__nf_tables_chain_type_lookup(int family, const struct nlattr *nla)
{
int i;
@@ -139,12 +139,12 @@
return NULL;
}
-static struct nf_chain_type *
+static const struct nf_chain_type *
nf_tables_chain_type_lookup(const struct nft_af_info *afi,
const struct nlattr *nla,
bool autoload)
{
- struct nf_chain_type *type;
+ const struct nf_chain_type *type;
type = __nf_tables_chain_type_lookup(afi->family, nla);
if (type != NULL)
@@ -475,7 +475,7 @@
return 0;
}
-int nft_register_chain_type(struct nf_chain_type *ctype)
+int nft_register_chain_type(const struct nf_chain_type *ctype)
{
int err = 0;
@@ -491,7 +491,7 @@
}
EXPORT_SYMBOL_GPL(nft_register_chain_type);
-void nft_unregister_chain_type(struct nf_chain_type *ctype)
+void nft_unregister_chain_type(const struct nf_chain_type *ctype)
{
nfnl_lock(NFNL_SUBSYS_NFTABLES);
chain_type[ctype->family][ctype->type] = NULL;
@@ -900,7 +900,7 @@
return -EOVERFLOW;
if (nla[NFTA_CHAIN_HOOK]) {
- struct nf_chain_type *type;
+ const struct nf_chain_type *type;
struct nf_hook_ops *ops;
nf_hookfn *hookfn;
u32 hooknum, priority;