Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / ipv6 / netfilter / nft_masq_ipv6.c

diff --git a/kernel/net/ipv6/netfilter/nft_masq_ipv6.c b/kernel/net/ipv6/netfilter/nft_masq_ipv6.c
new file mode 100644 (file)
index 0000000..cd1ac16
--- /dev/null
+++ b/kernel/net/ipv6/netfilter/nft_masq_ipv6.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2014 Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/netlink.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter/nf_tables.h>
+#include <net/netfilter/nf_tables.h>
+#include <net/netfilter/nf_nat.h>
+#include <net/netfilter/nft_masq.h>
+#include <net/netfilter/ipv6/nf_nat_masquerade.h>
+
+static void nft_masq_ipv6_eval(const struct nft_expr *expr,
+                              struct nft_regs *regs,
+                              const struct nft_pktinfo *pkt)
+{
+       struct nft_masq *priv = nft_expr_priv(expr);
+       struct nf_nat_range range;
+
+       memset(&range, 0, sizeof(range));
+       range.flags = priv->flags;
+
+       regs->verdict.code = nf_nat_masquerade_ipv6(pkt->skb, &range, pkt->out);
+}
+
+static struct nft_expr_type nft_masq_ipv6_type;
+static const struct nft_expr_ops nft_masq_ipv6_ops = {
+       .type           = &nft_masq_ipv6_type,
+       .size           = NFT_EXPR_SIZE(sizeof(struct nft_masq)),
+       .eval           = nft_masq_ipv6_eval,
+       .init           = nft_masq_init,
+       .dump           = nft_masq_dump,
+       .validate       = nft_masq_validate,
+};
+
+static struct nft_expr_type nft_masq_ipv6_type __read_mostly = {
+       .family         = NFPROTO_IPV6,
+       .name           = "masq",
+       .ops            = &nft_masq_ipv6_ops,
+       .policy         = nft_masq_policy,
+       .maxattr        = NFTA_MASQ_MAX,
+       .owner          = THIS_MODULE,
+};
+
+static int __init nft_masq_ipv6_module_init(void)
+{
+       int ret;
+
+       ret = nft_register_expr(&nft_masq_ipv6_type);
+       if (ret < 0)
+               return ret;
+
+       nf_nat_masquerade_ipv6_register_notifier();
+
+       return ret;
+}
+
+static void __exit nft_masq_ipv6_module_exit(void)
+{
+       nft_unregister_expr(&nft_masq_ipv6_type);
+       nf_nat_masquerade_ipv6_unregister_notifier();
+}
+
+module_init(nft_masq_ipv6_module_init);
+module_exit(nft_masq_ipv6_module_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>");
+MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "masq");