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path: root/net/ipv6/netfilter/ip6table_raw.c
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Diffstat (limited to 'net/ipv6/netfilter/ip6table_raw.c')
-rw-r--r--net/ipv6/netfilter/ip6table_raw.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c
new file mode 100644
index 000000000..0b33caad2
--- /dev/null
+++ b/net/ipv6/netfilter/ip6table_raw.c
@@ -0,0 +1,85 @@
+/*
+ * IPv6 raw table, a port of the IPv4 raw table to IPv6
+ *
+ * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ */
+#include <linux/module.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/slab.h>
+
+#define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT))
+
+static const struct xt_table packet_raw = {
+ .name = "raw",
+ .valid_hooks = RAW_VALID_HOOKS,
+ .me = THIS_MODULE,
+ .af = NFPROTO_IPV6,
+ .priority = NF_IP6_PRI_RAW,
+};
+
+/* The work comes in here from netfilter.c. */
+static unsigned int
+ip6table_raw_hook(const struct nf_hook_ops *ops, struct sk_buff *skb,
+ const struct nf_hook_state *state)
+{
+ const struct net *net = dev_net(state->in ? state->in : state->out);
+
+ return ip6t_do_table(skb, ops->hooknum, state, net->ipv6.ip6table_raw);
+}
+
+static struct nf_hook_ops *rawtable_ops __read_mostly;
+
+static int __net_init ip6table_raw_net_init(struct net *net)
+{
+ struct ip6t_replace *repl;
+
+ repl = ip6t_alloc_initial_table(&packet_raw);
+ if (repl == NULL)
+ return -ENOMEM;
+ net->ipv6.ip6table_raw =
+ ip6t_register_table(net, &packet_raw, repl);
+ kfree(repl);
+ return PTR_ERR_OR_ZERO(net->ipv6.ip6table_raw);
+}
+
+static void __net_exit ip6table_raw_net_exit(struct net *net)
+{
+ ip6t_unregister_table(net, net->ipv6.ip6table_raw);
+}
+
+static struct pernet_operations ip6table_raw_net_ops = {
+ .init = ip6table_raw_net_init,
+ .exit = ip6table_raw_net_exit,
+};
+
+static int __init ip6table_raw_init(void)
+{
+ int ret;
+
+ ret = register_pernet_subsys(&ip6table_raw_net_ops);
+ if (ret < 0)
+ return ret;
+
+ /* Register hooks */
+ rawtable_ops = xt_hook_link(&packet_raw, ip6table_raw_hook);
+ if (IS_ERR(rawtable_ops)) {
+ ret = PTR_ERR(rawtable_ops);
+ goto cleanup_table;
+ }
+
+ return ret;
+
+ cleanup_table:
+ unregister_pernet_subsys(&ip6table_raw_net_ops);
+ return ret;
+}
+
+static void __exit ip6table_raw_fini(void)
+{
+ xt_hook_unlink(&packet_raw, rawtable_ops);
+ unregister_pernet_subsys(&ip6table_raw_net_ops);
+}
+
+module_init(ip6table_raw_init);
+module_exit(ip6table_raw_fini);
+MODULE_LICENSE("GPL");