diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /net/ipv6/netfilter/ip6table_raw.c |
Initial import
Diffstat (limited to 'net/ipv6/netfilter/ip6table_raw.c')
-rw-r--r-- | net/ipv6/netfilter/ip6table_raw.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c new file mode 100644 index 000000000..0b33caad2 --- /dev/null +++ b/net/ipv6/netfilter/ip6table_raw.c @@ -0,0 +1,85 @@ +/* + * IPv6 raw table, a port of the IPv4 raw table to IPv6 + * + * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> + */ +#include <linux/module.h> +#include <linux/netfilter_ipv6/ip6_tables.h> +#include <linux/slab.h> + +#define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT)) + +static const struct xt_table packet_raw = { + .name = "raw", + .valid_hooks = RAW_VALID_HOOKS, + .me = THIS_MODULE, + .af = NFPROTO_IPV6, + .priority = NF_IP6_PRI_RAW, +}; + +/* The work comes in here from netfilter.c. */ +static unsigned int +ip6table_raw_hook(const struct nf_hook_ops *ops, struct sk_buff *skb, + const struct nf_hook_state *state) +{ + const struct net *net = dev_net(state->in ? state->in : state->out); + + return ip6t_do_table(skb, ops->hooknum, state, net->ipv6.ip6table_raw); +} + +static struct nf_hook_ops *rawtable_ops __read_mostly; + +static int __net_init ip6table_raw_net_init(struct net *net) +{ + struct ip6t_replace *repl; + + repl = ip6t_alloc_initial_table(&packet_raw); + if (repl == NULL) + return -ENOMEM; + net->ipv6.ip6table_raw = + ip6t_register_table(net, &packet_raw, repl); + kfree(repl); + return PTR_ERR_OR_ZERO(net->ipv6.ip6table_raw); +} + +static void __net_exit ip6table_raw_net_exit(struct net *net) +{ + ip6t_unregister_table(net, net->ipv6.ip6table_raw); +} + +static struct pernet_operations ip6table_raw_net_ops = { + .init = ip6table_raw_net_init, + .exit = ip6table_raw_net_exit, +}; + +static int __init ip6table_raw_init(void) +{ + int ret; + + ret = register_pernet_subsys(&ip6table_raw_net_ops); + if (ret < 0) + return ret; + + /* Register hooks */ + rawtable_ops = xt_hook_link(&packet_raw, ip6table_raw_hook); + if (IS_ERR(rawtable_ops)) { + ret = PTR_ERR(rawtable_ops); + goto cleanup_table; + } + + return ret; + + cleanup_table: + unregister_pernet_subsys(&ip6table_raw_net_ops); + return ret; +} + +static void __exit ip6table_raw_fini(void) +{ + xt_hook_unlink(&packet_raw, rawtable_ops); + unregister_pernet_subsys(&ip6table_raw_net_ops); +} + +module_init(ip6table_raw_init); +module_exit(ip6table_raw_fini); +MODULE_LICENSE("GPL"); |