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authorDavid Wilder <dwilder@us.ibm.com>2020-06-22 10:10:13 -0700
committerPablo Neira Ayuso <pablo@netfilter.org>2020-06-25 00:50:31 +0200
commit57ea5f18882a3d7cf6135fa8c949a37c89395837 (patch)
treeff378c1e49efa8e4841348c6c32e8e2e6d834bfc /include
parentnetfilter: iptables: Add a .pre_exit hook in all iptable_foo.c. (diff)
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netfilter: ip6tables: Split ip6t_unregister_table() into pre_exit and exit helpers.
The pre_exit will un-register the underlying hook and .exit will do the table freeing. The netns core does an unconditional synchronize_rcu after the pre_exit hooks insuring no packets are in flight that have picked up the pointer before completing the un-register. Fixes: b9e69e127397 ("netfilter: xtables: don't hook tables by default") Signed-off-by: David Wilder <dwilder@us.ibm.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netfilter_ipv6/ip6_tables.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h
index 8225f7821a29..1547d5f9ae06 100644
--- a/include/linux/netfilter_ipv6/ip6_tables.h
+++ b/include/linux/netfilter_ipv6/ip6_tables.h
@@ -29,6 +29,9 @@ int ip6t_register_table(struct net *net, const struct xt_table *table,
const struct nf_hook_ops *ops, struct xt_table **res);
void ip6t_unregister_table(struct net *net, struct xt_table *table,
const struct nf_hook_ops *ops);
+void ip6t_unregister_table_pre_exit(struct net *net, struct xt_table *table,
+ const struct nf_hook_ops *ops);
+void ip6t_unregister_table_exit(struct net *net, struct xt_table *table);
extern unsigned int ip6t_do_table(struct sk_buff *skb,
const struct nf_hook_state *state,
struct xt_table *table);