1 /* 2 * This is a module which is used for setting the skb->priority field 3 * of an skb for qdisc classification. 4 */ 5 6 /* (C) 2001-2002 Patrick McHardy <kaber@trash.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/skbuff.h> 15 #include <linux/ip.h> 16 #include <net/checksum.h> 17 18 #include <linux/netfilter_ipv4.h> 19 #include <linux/netfilter_ipv6.h> 20 #include <linux/netfilter/x_tables.h> 21 #include <linux/netfilter/xt_CLASSIFY.h> 22 23 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); 24 MODULE_LICENSE("GPL"); 25 MODULE_DESCRIPTION("iptables qdisc classification target module"); 26 MODULE_ALIAS("ipt_CLASSIFY"); 27 MODULE_ALIAS("ip6t_CLASSIFY"); 28 29 static unsigned int 30 target(struct sk_buff *skb, 31 const struct net_device *in, 32 const struct net_device *out, 33 unsigned int hooknum, 34 const struct xt_target *target, 35 const void *targinfo) 36 { 37 const struct xt_classify_target_info *clinfo = targinfo; 38 39 skb->priority = clinfo->priority; 40 return XT_CONTINUE; 41 } 42 43 static struct xt_target xt_classify_target[] __read_mostly = { 44 { 45 .family = AF_INET, 46 .name = "CLASSIFY", 47 .target = target, 48 .targetsize = sizeof(struct xt_classify_target_info), 49 .table = "mangle", 50 .hooks = (1 << NF_IP_LOCAL_OUT) | 51 (1 << NF_IP_FORWARD) | 52 (1 << NF_IP_POST_ROUTING), 53 .me = THIS_MODULE, 54 }, 55 { 56 .name = "CLASSIFY", 57 .family = AF_INET6, 58 .target = target, 59 .targetsize = sizeof(struct xt_classify_target_info), 60 .table = "mangle", 61 .hooks = (1 << NF_IP6_LOCAL_OUT) | 62 (1 << NF_IP6_FORWARD) | 63 (1 << NF_IP6_POST_ROUTING), 64 .me = THIS_MODULE, 65 }, 66 }; 67 68 static int __init xt_classify_init(void) 69 { 70 return xt_register_targets(xt_classify_target, 71 ARRAY_SIZE(xt_classify_target)); 72 } 73 74 static void __exit xt_classify_fini(void) 75 { 76 xt_unregister_targets(xt_classify_target, 77 ARRAY_SIZE(xt_classify_target)); 78 } 79 80 module_init(xt_classify_init); 81 module_exit(xt_classify_fini); 82