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Linux/net/netfilter/nft_reject_inet.c

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  1 /*
  2  * Copyright (c) 2014 Patrick McHardy <kaber@trash.net>
  3  *
  4  * This program is free software; you can redistribute it and/or modify
  5  * it under the terms of the GNU General Public License version 2 as
  6  * published by the Free Software Foundation.
  7  */
  8 
  9 #include <linux/kernel.h>
 10 #include <linux/init.h>
 11 #include <linux/module.h>
 12 #include <linux/netlink.h>
 13 #include <linux/netfilter.h>
 14 #include <linux/netfilter/nf_tables.h>
 15 #include <net/netfilter/nf_tables.h>
 16 #include <net/netfilter/nft_reject.h>
 17 
 18 static void nft_reject_inet_eval(const struct nft_expr *expr,
 19                                  struct nft_data data[NFT_REG_MAX + 1],
 20                                  const struct nft_pktinfo *pkt)
 21 {
 22         switch (pkt->ops->pf) {
 23         case NFPROTO_IPV4:
 24                 return nft_reject_ipv4_eval(expr, data, pkt);
 25         case NFPROTO_IPV6:
 26                 return nft_reject_ipv6_eval(expr, data, pkt);
 27         }
 28 }
 29 
 30 static struct nft_expr_type nft_reject_inet_type;
 31 static const struct nft_expr_ops nft_reject_inet_ops = {
 32         .type           = &nft_reject_inet_type,
 33         .size           = NFT_EXPR_SIZE(sizeof(struct nft_reject)),
 34         .eval           = nft_reject_inet_eval,
 35         .init           = nft_reject_init,
 36         .dump           = nft_reject_dump,
 37 };
 38 
 39 static struct nft_expr_type nft_reject_inet_type __read_mostly = {
 40         .family         = NFPROTO_INET,
 41         .name           = "reject",
 42         .ops            = &nft_reject_inet_ops,
 43         .policy         = nft_reject_policy,
 44         .maxattr        = NFTA_REJECT_MAX,
 45         .owner          = THIS_MODULE,
 46 };
 47 
 48 static int __init nft_reject_inet_module_init(void)
 49 {
 50         return nft_register_expr(&nft_reject_inet_type);
 51 }
 52 
 53 static void __exit nft_reject_inet_module_exit(void)
 54 {
 55         nft_unregister_expr(&nft_reject_inet_type);
 56 }
 57 
 58 module_init(nft_reject_inet_module_init);
 59 module_exit(nft_reject_inet_module_exit);
 60 
 61 MODULE_LICENSE("GPL");
 62 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
 63 MODULE_ALIAS_NFT_AF_EXPR(1, "reject");
 64 

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