mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-19 18:09:05 +00:00
bf3a46aa9b
As discussed at netconf'05, we convert nfmark and conntrack-mark to be 32bits even on 64bit architectures. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* Kernel module to match NFMARK values. */
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/* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
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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/netfilter_ipv4/ipt_mark.h>
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#include <linux/netfilter_ipv4/ip_tables.h>
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
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MODULE_DESCRIPTION("iptables mark matching module");
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static int
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match(const 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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const void *matchinfo,
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int offset,
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int *hotdrop)
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{
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const struct ipt_mark_info *info = matchinfo;
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return ((skb->nfmark & info->mask) == info->mark) ^ info->invert;
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}
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static int
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checkentry(const char *tablename,
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const struct ipt_ip *ip,
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void *matchinfo,
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unsigned int matchsize,
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unsigned int hook_mask)
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{
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struct ipt_mark_info *minfo = (struct ipt_mark_info *) matchinfo;
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if (matchsize != IPT_ALIGN(sizeof(struct ipt_mark_info)))
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return 0;
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if (minfo->mark > 0xffffffff || minfo->mask > 0xffffffff) {
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printk(KERN_WARNING "mark: only supports 32bit mark\n");
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return 0;
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}
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return 1;
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}
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static struct ipt_match mark_match = {
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.name = "mark",
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.match = &match,
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.checkentry = &checkentry,
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.me = THIS_MODULE,
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};
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static int __init init(void)
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{
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return ipt_register_match(&mark_match);
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}
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static void __exit fini(void)
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{
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ipt_unregister_match(&mark_match);
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}
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module_init(init);
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module_exit(fini);
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