span class="cm"> * This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Authors: Thomas Graf <tgraf@suug.ch> * Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> * * Based on net/sched/cls_u32.c */#include<linux/module.h>#include<linux/types.h>#include<linux/kernel.h>#include<linux/skbuff.h>#include<net/pkt_cls.h>staticintem_u32_match(structsk_buff*skb,structtcf_ematch*em,structtcf_pkt_info*info){structtc_u32_key*key=(structtc_u32_key*)em->data;constunsignedchar*ptr=skb_network_header(skb);if(info){if(info->ptr)ptr=info->ptr;ptr+=(info->nexthdr&key->offmask);}ptr+=key->off;if(!tcf_valid_offset(skb,ptr,sizeof(u32)))return0;return!(((*(__be32*)ptr)^key->val)&key->mask);}staticstructtcf_ematch_opsem_u32_ops={.kind=TCF_EM_U32,.datalen=sizeof(structtc_u32_key),.match=em_u32_match,.owner=THIS_MODULE,.link=LIST_HEAD_INIT(em_u32_ops.link)};staticint__initinit_em_u32(void){returntcf_em_register(&em_u32_ops);}staticvoid__exitexit_em_u32(void){tcf_em_unregister(&em_u32_ops);}MODULE_LICENSE("GPL");module_init(init_em_u32);module_exit(exit_em_u32);MODULE_ALIAS_TCF_EMATCH(TCF_EM_U32);