Release 4.11 net/ipv4/netfilter/nf_tables_ipv4.c
/*
* Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
* Copyright (c) 2012-2013 Pablo Neira Ayuso <pablo@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.
*
* Development of this code funded by Astaro AG (http://www.astaro.com/)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/ip.h>
#include <linux/netfilter_ipv4.h>
#include <net/netfilter/nf_tables.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/netfilter/nf_tables_ipv4.h>
static unsigned int nft_do_chain_ipv4(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct nft_pktinfo pkt;
nft_set_pktinfo_ipv4(&pkt, skb, state);
return nft_do_chain(&pkt, priv);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 35 | 77.78% | 3 | 50.00% |
| Pablo Neira Ayuso | 4 | 8.89% | 1 | 16.67% |
| David S. Miller | 3 | 6.67% | 1 | 16.67% |
| Eric W. Biedermann | 3 | 6.67% | 1 | 16.67% |
| Total | 45 | 100.00% | 6 | 100.00% |
static unsigned int nft_ipv4_output(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (unlikely(skb->len < sizeof(struct iphdr) ||
ip_hdr(skb)->ihl < sizeof(struct iphdr) / 4)) {
if (net_ratelimit())
pr_info("nf_tables_ipv4: ignoring short SOCK_RAW "
"packet\n");
return NF_ACCEPT;
}
return nft_do_chain_ipv4(priv, skb, state);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 72 | 92.31% | 2 | 50.00% |
| Eric W. Biedermann | 3 | 3.85% | 1 | 25.00% |
| David S. Miller | 3 | 3.85% | 1 | 25.00% |
| Total | 78 | 100.00% | 4 | 100.00% |
struct nft_af_info nft_af_ipv4 __read_mostly = {
.family = NFPROTO_IPV4,
.nhooks = NF_INET_NUMHOOKS,
.owner = THIS_MODULE,
.nops = 1,
.hooks = {
[NF_INET_LOCAL_IN] = nft_do_chain_ipv4,
[NF_INET_LOCAL_OUT] = nft_ipv4_output,
[NF_INET_FORWARD] = nft_do_chain_ipv4,
[NF_INET_PRE_ROUTING] = nft_do_chain_ipv4,
[NF_INET_POST_ROUTING] = nft_do_chain_ipv4,
},
};
EXPORT_SYMBOL_GPL(nft_af_ipv4);
static int nf_tables_ipv4_init_net(struct net *net)
{
net->nft.ipv4 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
if (net->nft.ipv4 == NULL)
return -ENOMEM;
memcpy(net->nft.ipv4, &nft_af_ipv4, sizeof(nft_af_ipv4));
if (nft_register_afinfo(net, net->nft.ipv4) < 0)
goto err;
return 0;
err:
kfree(net->nft.ipv4);
return -ENOMEM;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 95 | 100.00% | 1 | 100.00% |
| Total | 95 | 100.00% | 1 | 100.00% |
static void nf_tables_ipv4_exit_net(struct net *net)
{
nft_unregister_afinfo(net, net->nft.ipv4);
kfree(net->nft.ipv4);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 31 | 100.00% | 2 | 100.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
static struct pernet_operations nf_tables_ipv4_net_ops = {
.init = nf_tables_ipv4_init_net,
.exit = nf_tables_ipv4_exit_net,
};
static const struct nf_chain_type filter_ipv4 = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
.family = NFPROTO_IPV4,
.owner = THIS_MODULE,
.hook_mask = (1 << NF_INET_LOCAL_IN) |
(1 << NF_INET_LOCAL_OUT) |
(1 << NF_INET_FORWARD) |
(1 << NF_INET_PRE_ROUTING) |
(1 << NF_INET_POST_ROUTING),
};
static int __init nf_tables_ipv4_init(void)
{
int ret;
ret = nft_register_chain_type(&filter_ipv4);
if (ret < 0)
return ret;
ret = register_pernet_subsys(&nf_tables_ipv4_net_ops);
if (ret < 0)
nft_unregister_chain_type(&filter_ipv4);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Pablo Neira Ayuso | 28 | 53.85% | 3 | 60.00% |
| Patrick McHardy | 13 | 25.00% | 1 | 20.00% |
| Gao Feng | 11 | 21.15% | 1 | 20.00% |
| Total | 52 | 100.00% | 5 | 100.00% |
static void __exit nf_tables_ipv4_exit(void)
{
unregister_pernet_subsys(&nf_tables_ipv4_net_ops);
nft_unregister_chain_type(&filter_ipv4);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 13 | 61.90% | 1 | 33.33% |
| Pablo Neira Ayuso | 8 | 38.10% | 2 | 66.67% |
| Total | 21 | 100.00% | 3 | 100.00% |
module_init(nf_tables_ipv4_init);
module_exit(nf_tables_ipv4_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
MODULE_ALIAS_NFT_FAMILY(AF_INET);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Patrick McHardy | 254 | 49.13% | 8 | 50.00% |
| Pablo Neira Ayuso | 240 | 46.42% | 5 | 31.25% |
| Gao Feng | 11 | 2.13% | 1 | 6.25% |
| Eric W. Biedermann | 6 | 1.16% | 1 | 6.25% |
| David S. Miller | 6 | 1.16% | 1 | 6.25% |
| Total | 517 | 100.00% | 16 | 100.00% |
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