Eric Lee / smarc-fsl-linux-kernel

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net/netfilter/nf_log_netdev.c 1.95 KB
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d2912cb15   Thomas Gleixner   treewide: Replace... 
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  // SPDX-License-Identifier: GPL-2.0-only
1fddf4bad   Pablo Neira Ayuso   netfilter: nf_log... 
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  /*
   * (C) 2016 by Pablo Neira Ayuso <pablo@netfilter.org>
1fddf4bad   Pablo Neira Ayuso   netfilter: nf_log... 
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   */
  
  #include <linux/module.h>
  #include <linux/spinlock.h>
  #include <linux/skbuff.h>
  #include <linux/ip.h>
  #include <net/route.h>
  
  #include <linux/netfilter.h>
  #include <net/netfilter/nf_log.h>
  
  static void nf_log_netdev_packet(struct net *net, u_int8_t pf,
  				 unsigned int hooknum,
  				 const struct sk_buff *skb,
  				 const struct net_device *in,
  				 const struct net_device *out,
  				 const struct nf_loginfo *loginfo,
  				 const char *prefix)
  {
673ab46f3   Liping Zhang   netfilter: nf_log... 
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  	nf_log_l2packet(net, pf, skb->protocol, hooknum, skb, in, out,
  			loginfo, prefix);
1fddf4bad   Pablo Neira Ayuso   netfilter: nf_log... 
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  }
  
  static struct nf_logger nf_netdev_logger __read_mostly = {
  	.name		= "nf_log_netdev",
  	.type		= NF_LOG_TYPE_LOG,
  	.logfn		= nf_log_netdev_packet,
  	.me		= THIS_MODULE,
  };
  
  static int __net_init nf_log_netdev_net_init(struct net *net)
  {
  	return nf_log_set(net, NFPROTO_NETDEV, &nf_netdev_logger);
  }
  
  static void __net_exit nf_log_netdev_net_exit(struct net *net)
  {
  	nf_log_unset(net, &nf_netdev_logger);
  }
  
  static struct pernet_operations nf_log_netdev_net_ops = {
  	.init = nf_log_netdev_net_init,
  	.exit = nf_log_netdev_net_exit,
  };
  
  static int __init nf_log_netdev_init(void)
  {
  	int ret;
  
  	/* Request to load the real packet loggers. */
  	nf_logger_request_module(NFPROTO_IPV4, NF_LOG_TYPE_LOG);
  	nf_logger_request_module(NFPROTO_IPV6, NF_LOG_TYPE_LOG);
  	nf_logger_request_module(NFPROTO_ARP, NF_LOG_TYPE_LOG);
  
  	ret = register_pernet_subsys(&nf_log_netdev_net_ops);
  	if (ret < 0)
  		return ret;
  
  	nf_log_register(NFPROTO_NETDEV, &nf_netdev_logger);
  	return 0;
  }
  
  static void __exit nf_log_netdev_exit(void)
  {
  	unregister_pernet_subsys(&nf_log_netdev_net_ops);
  	nf_log_unregister(&nf_netdev_logger);
  }
  
  module_init(nf_log_netdev_init);
  module_exit(nf_log_netdev_exit);
  
  MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
  MODULE_DESCRIPTION("Netfilter netdev packet logging");
  MODULE_LICENSE("GPL");
  MODULE_ALIAS_NF_LOGGER(5, 0); /* NFPROTO_NETDEV */