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netfilter: nftables: Only run the nftables chains in the proper netns

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- Register the nftables chains in the network namespace that they need
  to run in.

- Remove the hacks that stopped chains running in the wrong network
  namespace.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Eric W. Biederman 2015-07-10 18:15:44 -05:00 committed by Pablo Neira Ayuso
parent 085db2c045
commit fd2ecda034
2 changed files with 6 additions and 7 deletions
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8
net/netfilter/nf_tables_api.c
View File

@ -130,20 +130,24 @@ static void nft_trans_destroy(struct nft_trans *trans)
int nft_register_basechain(struct nft_base_chain *basechain,
unsigned int hook_nops)
{
struct net *net = read_pnet(&basechain->pnet);
if (basechain->flags & NFT_BASECHAIN_DISABLED)
return 0;
return nf_register_hooks(basechain->ops, hook_nops);
return nf_register_net_hooks(net, basechain->ops, hook_nops);
}
EXPORT_SYMBOL_GPL(nft_register_basechain);
void nft_unregister_basechain(struct nft_base_chain *basechain,
unsigned int hook_nops)
{
struct net *net = read_pnet(&basechain->pnet);
if (basechain->flags & NFT_BASECHAIN_DISABLED)
return;
nf_unregister_hooks(basechain->ops, hook_nops);
nf_unregister_net_hooks(net, basechain->ops, hook_nops);
}
EXPORT_SYMBOL_GPL(nft_unregister_basechain);

5
net/netfilter/nf_tables_core.c
View File

@ -114,7 +114,6 @@ unsigned int
nft_do_chain(struct nft_pktinfo *pkt, const struct nf_hook_ops *ops)
{
const struct nft_chain *chain = ops->priv, *basechain = chain;
const struct net *chain_net = read_pnet(&nft_base_chain(basechain)->pnet);
const struct net *net = dev_net(pkt->in ? pkt->in : pkt->out);
const struct nft_rule *rule;
const struct nft_expr *expr, *last;
@ -125,10 +124,6 @@ nft_do_chain(struct nft_pktinfo *pkt, const struct nf_hook_ops *ops)
int rulenum;
unsigned int gencursor = nft_genmask_cur(net);
/* Ignore chains that are not for the current network namespace */
if (!net_eq(net, chain_net))
return NF_ACCEPT;
do_chain:
rulenum = 0;
rule = list_entry(&chain->rules, struct nft_rule, list);