diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/ipv4/netfilter/nf_tables_ipv4.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/ipv4/netfilter/nf_tables_ipv4.c')
-rw-r--r-- | kernel/net/ipv4/netfilter/nf_tables_ipv4.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/kernel/net/ipv4/netfilter/nf_tables_ipv4.c b/kernel/net/ipv4/netfilter/nf_tables_ipv4.c new file mode 100644 index 000000000..aa180d3a6 --- /dev/null +++ b/kernel/net/ipv4/netfilter/nf_tables_ipv4.c @@ -0,0 +1,125 @@ +/* + * 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(const struct nf_hook_ops *ops, + struct sk_buff *skb, + const struct nf_hook_state *state) +{ + struct nft_pktinfo pkt; + + nft_set_pktinfo_ipv4(&pkt, ops, skb, state); + + return nft_do_chain(&pkt, ops); +} + +static unsigned int nft_ipv4_output(const struct nf_hook_ops *ops, + 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(ops, skb, state); +} + +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; +} + +static void nf_tables_ipv4_exit_net(struct net *net) +{ + nft_unregister_afinfo(net->nft.ipv4); + kfree(net->nft.ipv4); +} + +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; + + nft_register_chain_type(&filter_ipv4); + ret = register_pernet_subsys(&nf_tables_ipv4_net_ops); + if (ret < 0) + nft_unregister_chain_type(&filter_ipv4); + + return ret; +} + +static void __exit nf_tables_ipv4_exit(void) +{ + unregister_pernet_subsys(&nf_tables_ipv4_net_ops); + nft_unregister_chain_type(&filter_ipv4); +} + +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); |