target/linux/generic-2.4/patches/619-netfilter_classify.patch

   1 Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_CLASSIFY.h
   2 ===================================================================
   3 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
   4 +++ linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_CLASSIFY.h  2007-12-15 05:20:11.684506105 +0100
   5 @@ -0,0 +1,8 @@
   6 +#ifndef _IPT_CLASSIFY_H
   7 +#define _IPT_CLASSIFY_H
   8 +
   9 +struct ipt_classify_target_info {
  10 +       u_int32_t priority;
  11 +};
  12 +
  13 +#endif /*_IPT_CLASSIFY_H */
  14 Index: linux-2.4.35.4/net/ipv4/netfilter/Config.in
  15 ===================================================================
  16 --- linux-2.4.35.4.orig/net/ipv4/netfilter/Config.in    2007-12-15 05:20:11.208478976 +0100
  17 +++ linux-2.4.35.4/net/ipv4/netfilter/Config.in 2007-12-15 05:20:11.688506331 +0100
  18 @@ -172,6 +172,7 @@
  19      dep_tristate '    DSCP target support' CONFIG_IP_NF_TARGET_DSCP $CONFIG_IP_NF_MANGLE
  20
  21      dep_tristate '    MARK target support' CONFIG_IP_NF_TARGET_MARK $CONFIG_IP_NF_MANGLE
  22 +    dep_tristate '    CLASSIFY target support (EXPERIMENTAL)' CONFIG_IP_NF_TARGET_CLASSIFY $CONFIG_IP_NF_MANGLE
  23      dep_tristate '    IMQ target support' CONFIG_IP_NF_TARGET_IMQ $CONFIG_IP_NF_MANGLE
  24    fi
  25    if [ "$CONFIG_IP_NF_CONNTRACK_MARK" != "n" ]; then
  26 Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_CLASSIFY.c
  27 ===================================================================
  28 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  29 +++ linux-2.4.35.4/net/ipv4/netfilter/ipt_CLASSIFY.c    2007-12-15 05:20:11.696506789 +0100
  30 @@ -0,0 +1,82 @@
  31 +/*
  32 + * This is a module which is used for setting the skb->priority field
  33 + * of an skb for qdisc classification.
  34 + */
  35 +
  36 +#include <linux/module.h>
  37 +#include <linux/skbuff.h>
  38 +#include <linux/ip.h>
  39 +#include <net/checksum.h>
  40 +
  41 +#include <linux/netfilter_ipv4/ip_tables.h>
  42 +#include <linux/netfilter_ipv4/ipt_CLASSIFY.h>
  43 +
  44 +MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
  45 +MODULE_LICENSE("GPL");
  46 +MODULE_DESCRIPTION("iptables qdisc classification target module");
  47 +
  48 +static unsigned int
  49 +target(struct sk_buff **pskb,
  50 +       unsigned int hooknum,
  51 +       const struct net_device *in,
  52 +       const struct net_device *out,
  53 +       const void *targinfo,
  54 +       void *userinfo)
  55 +{
  56 +       const struct ipt_classify_target_info *clinfo = targinfo;
  57 +
  58 +       if((*pskb)->priority != clinfo->priority) {
  59 +               (*pskb)->priority = clinfo->priority;
  60 +               (*pskb)->nfcache |= NFC_ALTERED;
  61 +       }
  62 +
  63 +       return IPT_CONTINUE;
  64 +}
  65 +
  66 +static int
  67 +checkentry(const char *tablename,
  68 +           const struct ipt_entry *e,
  69 +           void *targinfo,
  70 +           unsigned int targinfosize,
  71 +           unsigned int hook_mask)
  72 +{
  73 +       if (targinfosize != IPT_ALIGN(sizeof(struct ipt_classify_target_info))){
  74 +               printk(KERN_ERR "CLASSIFY: invalid size (%u != %u).\n",
  75 +                      targinfosize,
  76 +                      IPT_ALIGN(sizeof(struct ipt_classify_target_info)));
  77 +               return 0;
  78 +       }
  79 +
  80 +       if (hook_mask & ~(1 << NF_IP_POST_ROUTING)) {
  81 +               printk(KERN_ERR "CLASSIFY: only valid in POST_ROUTING.\n");
  82 +               return 0;
  83 +       }
  84 +
  85 +       if (strcmp(tablename, "mangle") != 0) {
  86 +               printk(KERN_WARNING "CLASSIFY: can only be called from "
  87 +                                   "\"mangle\" table, not \"%s\".\n",
  88 +                                   tablename);
  89 +               return 0;
  90 +       }
  91 +
  92 +       return 1;
  93 +}
  94 +
  95 +static struct ipt_target ipt_classify_reg
  96 += { { NULL, NULL }, "CLASSIFY", target, checkentry, NULL, THIS_MODULE };
  97 +
  98 +static int __init init(void)
  99 +{
 100 +       if (ipt_register_target(&ipt_classify_reg))
 101 +               return -EINVAL;
 102 +
 103 +       return 0;
 104 +}
 105 +
 106 +static void __exit fini(void)
 107 +{
 108 +       ipt_unregister_target(&ipt_classify_reg);
 109 +}
 110 +
 111 +module_init(init);
 112 +module_exit(fini);
 113 Index: linux-2.4.35.4/net/ipv4/netfilter/Makefile
 114 ===================================================================
 115 --- linux-2.4.35.4.orig/net/ipv4/netfilter/Makefile     2007-12-15 05:20:11.216479434 +0100
 116 +++ linux-2.4.35.4/net/ipv4/netfilter/Makefile  2007-12-15 05:20:11.696506789 +0100
 117 @@ -134,6 +134,7 @@
 118
 119  # targets
 120  obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
 121 +obj-$(CONFIG_IP_NF_TARGET_CLASSIFY) += ipt_CLASSIFY.o
 122  obj-$(CONFIG_IP_NF_TARGET_MIRROR) += ipt_MIRROR.o
 123  obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
 124  obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o