2ae15b64e6
Updates the MODULE_DESCRIPTION() tags for all Netfilter modules, actually describing what the module does and not just "netfilter XYZ target". Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/* IP tables module for matching the routing realm
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*
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* (C) 2003 by Sampsa Ranta <sampsa@netsonic.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <net/route.h>
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#include <linux/netfilter_ipv4.h>
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#include <linux/netfilter/xt_realm.h>
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#include <linux/netfilter/x_tables.h>
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MODULE_AUTHOR("Sampsa Ranta <sampsa@netsonic.fi>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Xtables: Routing realm match");
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MODULE_ALIAS("ipt_realm");
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static bool
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realm_mt(const struct sk_buff *skb, const struct net_device *in,
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const struct net_device *out, const struct xt_match *match,
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const void *matchinfo, int offset, unsigned int protoff,
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bool *hotdrop)
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{
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const struct xt_realm_info *info = matchinfo;
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const struct dst_entry *dst = skb->dst;
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return (info->id == (dst->tclassid & info->mask)) ^ info->invert;
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}
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static struct xt_match realm_mt_reg __read_mostly = {
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.name = "realm",
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.match = realm_mt,
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.matchsize = sizeof(struct xt_realm_info),
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.hooks = (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_FORWARD) |
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(1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_LOCAL_IN),
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.family = AF_INET,
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.me = THIS_MODULE
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};
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static int __init realm_mt_init(void)
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{
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return xt_register_match(&realm_mt_reg);
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}
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static void __exit realm_mt_exit(void)
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{
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xt_unregister_match(&realm_mt_reg);
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}
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module_init(realm_mt_init);
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module_exit(realm_mt_exit);
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