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Diffstat (limited to 'net/netfilter/nf_tables_api.c')
-rw-r--r--net/netfilter/nf_tables_api.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 97ec1c388bfe..af8b6a7488bd 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1211,13 +1211,17 @@ static void nft_chain_stats_replace(struct nft_base_chain *chain,
rcu_assign_pointer(chain->stats, newstats);
}
-static void nf_tables_chain_destroy(struct nft_chain *chain)
+static void nf_tables_chain_destroy(struct nft_ctx *ctx)
{
+ struct nft_chain *chain = ctx->chain;
+
BUG_ON(chain->use > 0);
if (nft_is_base_chain(chain)) {
struct nft_base_chain *basechain = nft_base_chain(chain);
+ if (basechain->type->free)
+ basechain->type->free(ctx);
module_put(basechain->type->owner);
free_percpu(basechain->stats);
if (basechain->stats)
@@ -1354,6 +1358,9 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
}
basechain->type = hook.type;
+ if (basechain->type->init)
+ basechain->type->init(ctx);
+
chain = &basechain->chain;
ops = &basechain->ops;
@@ -1374,6 +1381,8 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
if (chain == NULL)
return -ENOMEM;
}
+ ctx->chain = chain;
+
INIT_LIST_HEAD(&chain->rules);
chain->handle = nf_tables_alloc_handle(table);
chain->table = table;
@@ -1387,7 +1396,6 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
if (err < 0)
goto err1;
- ctx->chain = chain;
err = nft_trans_chain_add(ctx, NFT_MSG_NEWCHAIN);
if (err < 0)
goto err2;
@@ -1399,7 +1407,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
err2:
nf_tables_unregister_hook(net, table, chain);
err1:
- nf_tables_chain_destroy(chain);
+ nf_tables_chain_destroy(ctx);
return err;
}
@@ -5678,7 +5686,7 @@ static void nf_tables_commit_release(struct nft_trans *trans)
nf_tables_table_destroy(&trans->ctx);
break;
case NFT_MSG_DELCHAIN:
- nf_tables_chain_destroy(trans->ctx.chain);
+ nf_tables_chain_destroy(&trans->ctx);
break;
case NFT_MSG_DELRULE:
nf_tables_rule_destroy(&trans->ctx, nft_trans_rule(trans));
@@ -5849,7 +5857,7 @@ static void nf_tables_abort_release(struct nft_trans *trans)
nf_tables_table_destroy(&trans->ctx);
break;
case NFT_MSG_NEWCHAIN:
- nf_tables_chain_destroy(trans->ctx.chain);
+ nf_tables_chain_destroy(&trans->ctx);
break;
case NFT_MSG_NEWRULE:
nf_tables_rule_destroy(&trans->ctx, nft_trans_rule(trans));
@@ -6499,7 +6507,7 @@ int __nft_release_basechain(struct nft_ctx *ctx)
}
list_del(&ctx->chain->list);
ctx->table->use--;
- nf_tables_chain_destroy(ctx->chain);
+ nf_tables_chain_destroy(ctx);
return 0;
}
@@ -6515,6 +6523,7 @@ static void __nft_release_tables(struct net *net)
struct nft_set *set, *ns;
struct nft_ctx ctx = {
.net = net,
+ .family = NFPROTO_NETDEV,
};
list_for_each_entry_safe(table, nt, &net->nft.tables, list) {
@@ -6551,9 +6560,10 @@ static void __nft_release_tables(struct net *net)
nft_obj_destroy(obj);
}
list_for_each_entry_safe(chain, nc, &table->chains, list) {
+ ctx.chain = chain;
list_del(&chain->list);
table->use--;
- nf_tables_chain_destroy(chain);
+ nf_tables_chain_destroy(&ctx);
}
list_del(&table->list);
nf_tables_table_destroy(&ctx);