Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / ipv6 / netfilter / ip6table_raw.c

diff --git a/kernel/net/ipv6/netfilter/ip6table_raw.c b/kernel/net/ipv6/netfilter/ip6table_raw.c
new file mode 100644 (file)
index 0000000..0b33caa
--- /dev/null
+++ b/kernel/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");