Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c
new file mode 100644
index 0000000..4c00286
--- /dev/null
+++ b/net/ipv6/netfilter/ip6table_filter.c
@@ -0,0 +1,214 @@
+/*
+ * This is the 1999 rewrite of IP Firewalling, aiming for kernel 2.3.x.
+ *
+ * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
+ * Copyright (C) 2000-2004 Netfilter Core Team <coreteam@netfilter.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
+MODULE_DESCRIPTION("ip6tables filter table");
+
+#define FILTER_VALID_HOOKS ((1 << NF_IP6_LOCAL_IN) | (1 << NF_IP6_FORWARD) | (1 << NF_IP6_LOCAL_OUT))
+
+/* Standard entry. */
+struct ip6t_standard
+{
+ struct ip6t_entry entry;
+ struct ip6t_standard_target target;
+};
+
+struct ip6t_error_target
+{
+ struct ip6t_entry_target target;
+ char errorname[IP6T_FUNCTION_MAXNAMELEN];
+};
+
+struct ip6t_error
+{
+ struct ip6t_entry entry;
+ struct ip6t_error_target target;
+};
+
+static struct
+{
+ struct ip6t_replace repl;
+ struct ip6t_standard entries[3];
+ struct ip6t_error term;
+} initial_table __initdata
+= { { "filter", FILTER_VALID_HOOKS, 4,
+ sizeof(struct ip6t_standard) * 3 + sizeof(struct ip6t_error),
+ { [NF_IP6_LOCAL_IN] = 0,
+ [NF_IP6_FORWARD] = sizeof(struct ip6t_standard),
+ [NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard) * 2 },
+ { [NF_IP6_LOCAL_IN] = 0,
+ [NF_IP6_FORWARD] = sizeof(struct ip6t_standard),
+ [NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard) * 2 },
+ 0, NULL, { } },
+ {
+ /* LOCAL_IN */
+ { { { { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, "", "", { 0 }, { 0 }, 0, 0, 0 },
+ 0,
+ sizeof(struct ip6t_entry),
+ sizeof(struct ip6t_standard),
+ 0, { 0, 0 }, { } },
+ { { { { IP6T_ALIGN(sizeof(struct ip6t_standard_target)), "" } }, { } },
+ -NF_ACCEPT - 1 } },
+ /* FORWARD */
+ { { { { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, "", "", { 0 }, { 0 }, 0, 0, 0 },
+ 0,
+ sizeof(struct ip6t_entry),
+ sizeof(struct ip6t_standard),
+ 0, { 0, 0 }, { } },
+ { { { { IP6T_ALIGN(sizeof(struct ip6t_standard_target)), "" } }, { } },
+ -NF_ACCEPT - 1 } },
+ /* LOCAL_OUT */
+ { { { { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, "", "", { 0 }, { 0 }, 0, 0, 0 },
+ 0,
+ sizeof(struct ip6t_entry),
+ sizeof(struct ip6t_standard),
+ 0, { 0, 0 }, { } },
+ { { { { IP6T_ALIGN(sizeof(struct ip6t_standard_target)), "" } }, { } },
+ -NF_ACCEPT - 1 } }
+ },
+ /* ERROR */
+ { { { { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, { { { 0 } } }, "", "", { 0 }, { 0 }, 0, 0, 0 },
+ 0,
+ sizeof(struct ip6t_entry),
+ sizeof(struct ip6t_error),
+ 0, { 0, 0 }, { } },
+ { { { { IP6T_ALIGN(sizeof(struct ip6t_error_target)), IP6T_ERROR_TARGET } },
+ { } },
+ "ERROR"
+ }
+ }
+};
+
+static struct ip6t_table packet_filter = {
+ .name = "filter",
+ .valid_hooks = FILTER_VALID_HOOKS,
+ .lock = RW_LOCK_UNLOCKED,
+ .me = THIS_MODULE,
+};
+
+/* The work comes in here from netfilter.c. */
+static unsigned int
+ip6t_hook(unsigned int hook,
+ struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ int (*okfn)(struct sk_buff *))
+{
+ return ip6t_do_table(pskb, hook, in, out, &packet_filter, NULL);
+}
+
+static unsigned int
+ip6t_local_out_hook(unsigned int hook,
+ struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ int (*okfn)(struct sk_buff *))
+{
+#if 0
+ /* root is playing with raw sockets. */
+ if ((*pskb)->len < sizeof(struct iphdr)
+ || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) {
+ if (net_ratelimit())
+ printk("ip6t_hook: happy cracking.\n");
+ return NF_ACCEPT;
+ }
+#endif
+
+ return ip6t_do_table(pskb, hook, in, out, &packet_filter, NULL);
+}
+
+static struct nf_hook_ops ip6t_ops[] = {
+ {
+ .hook = ip6t_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_LOCAL_IN,
+ .priority = NF_IP6_PRI_FILTER,
+ },
+ {
+ .hook = ip6t_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_FORWARD,
+ .priority = NF_IP6_PRI_FILTER,
+ },
+ {
+ .hook = ip6t_local_out_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_LOCAL_OUT,
+ .priority = NF_IP6_PRI_FILTER,
+ },
+};
+
+/* Default to forward because I got too much mail already. */
+static int forward = NF_ACCEPT;
+module_param(forward, bool, 0000);
+
+static int __init init(void)
+{
+ int ret;
+
+ if (forward < 0 || forward > NF_MAX_VERDICT) {
+ printk("iptables forward must be 0 or 1\n");
+ return -EINVAL;
+ }
+
+ /* Entry 1 is the FORWARD hook */
+ initial_table.entries[1].target.verdict = -forward - 1;
+
+ /* Register table */
+ ret = ip6t_register_table(&packet_filter, &initial_table.repl);
+ if (ret < 0)
+ return ret;
+
+ /* Register hooks */
+ ret = nf_register_hook(&ip6t_ops[0]);
+ if (ret < 0)
+ goto cleanup_table;
+
+ ret = nf_register_hook(&ip6t_ops[1]);
+ if (ret < 0)
+ goto cleanup_hook0;
+
+ ret = nf_register_hook(&ip6t_ops[2]);
+ if (ret < 0)
+ goto cleanup_hook1;
+
+ return ret;
+
+ cleanup_hook1:
+ nf_unregister_hook(&ip6t_ops[1]);
+ cleanup_hook0:
+ nf_unregister_hook(&ip6t_ops[0]);
+ cleanup_table:
+ ip6t_unregister_table(&packet_filter);
+
+ return ret;
+}
+
+static void __exit fini(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof(ip6t_ops)/sizeof(struct nf_hook_ops); i++)
+ nf_unregister_hook(&ip6t_ops[i]);
+
+ ip6t_unregister_table(&packet_filter);
+}
+
+module_init(init);
+module_exit(fini);