19e303d67d
This quiets the coccinelle warnings:
net/bridge/netfilter/ebtable_filter.c:107:1-3: WARNING: PTR_RET can be used
net/bridge/netfilter/ebtable_nat.c:107:1-3: WARNING: PTR_RET can be used
net/ipv6/netfilter/ip6table_filter.c:65:1-3: WARNING: PTR_RET can be used
net/ipv6/netfilter/ip6table_mangle.c💯1-3: WARNING: PTR_RET can be used
net/ipv6/netfilter/ip6table_raw.c:44:1-3: WARNING: PTR_RET can be used
net/ipv6/netfilter/ip6table_security.c:62:1-3: WARNING: PTR_RET can be used
net/ipv4/netfilter/iptable_filter.c:72:1-3: WARNING: PTR_RET can be used
net/ipv4/netfilter/iptable_mangle.c:107:1-3: WARNING: PTR_RET can be used
net/ipv4/netfilter/iptable_raw.c:51:1-3: WARNING: PTR_RET can be used
net/ipv4/netfilter/iptable_security.c:70:1-3: WARNING: PTR_RET can be used
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
138 lines
3.0 KiB
C
138 lines
3.0 KiB
C
/*
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* ebtable_filter
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*
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* Authors:
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* Bart De Schuymer <bdschuym@pandora.be>
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*
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* April, 2002
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*
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*/
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#include <linux/netfilter_bridge/ebtables.h>
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#include <linux/module.h>
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#define FILTER_VALID_HOOKS ((1 << NF_BR_LOCAL_IN) | (1 << NF_BR_FORWARD) | \
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(1 << NF_BR_LOCAL_OUT))
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static struct ebt_entries initial_chains[] =
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{
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{
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.name = "INPUT",
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.policy = EBT_ACCEPT,
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},
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{
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.name = "FORWARD",
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.policy = EBT_ACCEPT,
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},
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{
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.name = "OUTPUT",
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.policy = EBT_ACCEPT,
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},
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};
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static struct ebt_replace_kernel initial_table =
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{
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.name = "filter",
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.valid_hooks = FILTER_VALID_HOOKS,
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.entries_size = 3 * sizeof(struct ebt_entries),
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.hook_entry = {
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[NF_BR_LOCAL_IN] = &initial_chains[0],
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[NF_BR_FORWARD] = &initial_chains[1],
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[NF_BR_LOCAL_OUT] = &initial_chains[2],
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},
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.entries = (char *)initial_chains,
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};
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static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
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{
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if (valid_hooks & ~FILTER_VALID_HOOKS)
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return -EINVAL;
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return 0;
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}
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static const struct ebt_table frame_filter =
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{
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.name = "filter",
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.table = &initial_table,
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.valid_hooks = FILTER_VALID_HOOKS,
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.check = check,
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.me = THIS_MODULE,
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};
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static unsigned int
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ebt_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
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const struct net_device *out, int (*okfn)(struct sk_buff *))
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{
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return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_filter);
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}
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static unsigned int
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ebt_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in,
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const struct net_device *out, int (*okfn)(struct sk_buff *))
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{
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return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_filter);
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}
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static struct nf_hook_ops ebt_ops_filter[] __read_mostly = {
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{
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.hook = ebt_in_hook,
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.owner = THIS_MODULE,
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.pf = NFPROTO_BRIDGE,
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.hooknum = NF_BR_LOCAL_IN,
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.priority = NF_BR_PRI_FILTER_BRIDGED,
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},
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{
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.hook = ebt_in_hook,
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.owner = THIS_MODULE,
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.pf = NFPROTO_BRIDGE,
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.hooknum = NF_BR_FORWARD,
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.priority = NF_BR_PRI_FILTER_BRIDGED,
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},
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{
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.hook = ebt_out_hook,
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.owner = THIS_MODULE,
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.pf = NFPROTO_BRIDGE,
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.hooknum = NF_BR_LOCAL_OUT,
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.priority = NF_BR_PRI_FILTER_OTHER,
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},
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};
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static int __net_init frame_filter_net_init(struct net *net)
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{
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net->xt.frame_filter = ebt_register_table(net, &frame_filter);
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return PTR_RET(net->xt.frame_filter);
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}
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static void __net_exit frame_filter_net_exit(struct net *net)
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{
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ebt_unregister_table(net, net->xt.frame_filter);
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}
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static struct pernet_operations frame_filter_net_ops = {
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.init = frame_filter_net_init,
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.exit = frame_filter_net_exit,
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};
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static int __init ebtable_filter_init(void)
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{
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int ret;
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ret = register_pernet_subsys(&frame_filter_net_ops);
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if (ret < 0)
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return ret;
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ret = nf_register_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
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if (ret < 0)
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unregister_pernet_subsys(&frame_filter_net_ops);
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return ret;
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}
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static void __exit ebtable_filter_fini(void)
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{
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nf_unregister_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter));
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unregister_pernet_subsys(&frame_filter_net_ops);
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}
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module_init(ebtable_filter_init);
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module_exit(ebtable_filter_fini);
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MODULE_LICENSE("GPL");
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