~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/net/netfilter/nf_nat_tftp.c

Version: ~ [ linux-5.10-rc1 ] ~ [ linux-5.9.1 ] ~ [ linux-5.8.16 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.72 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.152 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.202 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.240 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.240 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* (C) 2001-2002 Magnus Boden <mb@ozaba.mine.nu>
  2  *
  3  * This program is free software; you can redistribute it and/or modify
  4  * it under the terms of the GNU General Public License version 2 as
  5  * published by the Free Software Foundation.
  6  */
  7 
  8 #include <linux/module.h>
  9 #include <linux/udp.h>
 10 
 11 #include <net/netfilter/nf_conntrack_helper.h>
 12 #include <net/netfilter/nf_conntrack_expect.h>
 13 #include <net/netfilter/nf_nat_helper.h>
 14 #include <linux/netfilter/nf_conntrack_tftp.h>
 15 
 16 MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
 17 MODULE_DESCRIPTION("TFTP NAT helper");
 18 MODULE_LICENSE("GPL");
 19 MODULE_ALIAS("ip_nat_tftp");
 20 
 21 static unsigned int help(struct sk_buff *skb,
 22                          enum ip_conntrack_info ctinfo,
 23                          struct nf_conntrack_expect *exp)
 24 {
 25         const struct nf_conn *ct = exp->master;
 26 
 27         exp->saved_proto.udp.port
 28                 = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port;
 29         exp->dir = IP_CT_DIR_REPLY;
 30         exp->expectfn = nf_nat_follow_master;
 31         if (nf_ct_expect_related(exp) != 0) {
 32                 nf_ct_helper_log(skb, exp->master, "cannot add expectation");
 33                 return NF_DROP;
 34         }
 35         return NF_ACCEPT;
 36 }
 37 
 38 static void __exit nf_nat_tftp_fini(void)
 39 {
 40         RCU_INIT_POINTER(nf_nat_tftp_hook, NULL);
 41         synchronize_rcu();
 42 }
 43 
 44 static int __init nf_nat_tftp_init(void)
 45 {
 46         BUG_ON(nf_nat_tftp_hook != NULL);
 47         RCU_INIT_POINTER(nf_nat_tftp_hook, help);
 48         return 0;
 49 }
 50 
 51 module_init(nf_nat_tftp_init);
 52 module_exit(nf_nat_tftp_fini);
 53 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp