Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Pablo Neira Ayuso |
469 |
92.87% |
4 |
36.36% |
| Liping Zhang |
17 |
3.37% |
1 |
9.09% |
| Kazunori Miyazawa |
5 |
0.99% |
1 |
9.09% |
| Rob Gill |
5 |
0.99% |
1 |
9.09% |
| Phil Sutter |
3 |
0.59% |
1 |
9.09% |
| Eric W. Biedermann |
3 |
0.59% |
1 |
9.09% |
| Thomas Gleixner |
2 |
0.40% |
1 |
9.09% |
| Herbert Xu |
1 |
0.20% |
1 |
9.09% |
| Total |
505 |
|
11 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015 Pablo Neira Ayuso <pablo@netfilter.org>
*/
#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/ipv6/nf_dup_ipv6.h>
struct nft_dup_ipv6 {
u8 sreg_addr;
u8 sreg_dev;
};
static void nft_dup_ipv6_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
struct nft_dup_ipv6 *priv = nft_expr_priv(expr);
struct in6_addr *gw = (struct in6_addr *)®s->data[priv->sreg_addr];
int oif = priv->sreg_dev ? regs->data[priv->sreg_dev] : -1;
nf_dup_ipv6(nft_net(pkt), pkt->skb, nft_hook(pkt), gw, oif);
}
static int nft_dup_ipv6_init(const struct nft_ctx *ctx,
const struct nft_expr *expr,
const struct nlattr * const tb[])
{
struct nft_dup_ipv6 *priv = nft_expr_priv(expr);
int err;
if (tb[NFTA_DUP_SREG_ADDR] == NULL)
return -EINVAL;
err = nft_parse_register_load(tb[NFTA_DUP_SREG_ADDR], &priv->sreg_addr,
sizeof(struct in6_addr));
if (err < 0)
return err;
if (tb[NFTA_DUP_SREG_DEV])
err = nft_parse_register_load(tb[NFTA_DUP_SREG_DEV],
&priv->sreg_dev, sizeof(int));
return err;
}
static int nft_dup_ipv6_dump(struct sk_buff *skb,
const struct nft_expr *expr, bool reset)
{
struct nft_dup_ipv6 *priv = nft_expr_priv(expr);
if (nft_dump_register(skb, NFTA_DUP_SREG_ADDR, priv->sreg_addr))
goto nla_put_failure;
if (priv->sreg_dev &&
nft_dump_register(skb, NFTA_DUP_SREG_DEV, priv->sreg_dev))
goto nla_put_failure;
return 0;
nla_put_failure:
return -1;
}
static struct nft_expr_type nft_dup_ipv6_type;
static const struct nft_expr_ops nft_dup_ipv6_ops = {
.type = &nft_dup_ipv6_type,
.size = NFT_EXPR_SIZE(sizeof(struct nft_dup_ipv6)),
.eval = nft_dup_ipv6_eval,
.init = nft_dup_ipv6_init,
.dump = nft_dup_ipv6_dump,
.reduce = NFT_REDUCE_READONLY,
};
static const struct nla_policy nft_dup_ipv6_policy[NFTA_DUP_MAX + 1] = {
[NFTA_DUP_SREG_ADDR] = { .type = NLA_U32 },
[NFTA_DUP_SREG_DEV] = { .type = NLA_U32 },
};
static struct nft_expr_type nft_dup_ipv6_type __read_mostly = {
.family = NFPROTO_IPV6,
.name = "dup",
.ops = &nft_dup_ipv6_ops,
.policy = nft_dup_ipv6_policy,
.maxattr = NFTA_DUP_MAX,
.owner = THIS_MODULE,
};
static int __init nft_dup_ipv6_module_init(void)
{
return nft_register_expr(&nft_dup_ipv6_type);
}
static void __exit nft_dup_ipv6_module_exit(void)
{
nft_unregister_expr(&nft_dup_ipv6_type);
}
module_init(nft_dup_ipv6_module_init);
module_exit(nft_dup_ipv6_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "dup");
MODULE_DESCRIPTION("IPv6 nftables packet duplication support");