mirror of
git://git.code.sf.net/p/xtables-addons/xtables-addons
synced 2025-09-19 02:54:56 +02:00
3bf45b60b2
- order #include lists - const annotations, removal of casts - add ipt_IPMARK alias - make symbol names distinct
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
#include <linux/ip.h>
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/version.h>
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#include <linux/netfilter/x_tables.h>
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#include <net/checksum.h>
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#include "xt_IPMARK.h"
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#include "compat_xtables.h"
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MODULE_AUTHOR("Grzegorz Janoszka <Grzegorz@Janoszka.pl>");
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MODULE_DESCRIPTION("IP tables IPMARK: mark based on ip address");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_IPMARK");
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static unsigned int
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ipmark_tg(struct sk_buff *skb,
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const struct net_device *in,
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const struct net_device *out,
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unsigned int hooknum,
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const struct xt_target *target,
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const void *targinfo)
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{
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const struct xt_ipmark_tginfo *ipmarkinfo = targinfo;
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const struct iphdr *iph = ip_hdr(skb);
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__u32 mark;
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if (ipmarkinfo->selector == XT_IPMARK_SRC)
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mark = ntohl(iph->saddr);
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else
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mark = ntohl(iph->daddr);
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mark &= ipmarkinfo->andmask;
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mark |= ipmarkinfo->ormask;
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skb_nfmark(skb) = mark;
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return XT_CONTINUE;
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}
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static struct xt_target ipt_ipmark_reg = {
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.name = "IPMARK",
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.family = AF_INET,
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.table = "mangle",
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.target = ipmark_tg,
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.targetsize = sizeof(struct xt_ipmark_tginfo),
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.me = THIS_MODULE
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};
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static int __init ipmark_tg_init(void)
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{
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return xt_register_target(&ipt_ipmark_reg);
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}
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static void __exit ipmark_tg_exit(void)
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{
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xt_unregister_target(&ipt_ipmark_reg);
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}
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module_init(ipmark_tg_init);
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module_exit(ipmark_tg_exit);
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