dist/ipf/mln_rule.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 1993-2001 by Darren Reed.
   5  *
   6  * See the IPFILTER.LICENCE file for details on licencing.
   7  *
   8  */
   9
  10 #include <sys/param.h>
  11 #include <sys/systm.h>
  12 #include <sys/conf.h>
  13 #include <sys/proc.h>
  14 #include <sys/ioctl.h>
  15 #include <sys/kernel.h>
  16 #include <sys/mbuf.h>
  17 #include <sys/exec.h>
  18 #include <sys/socket.h>
  19 #include <net/if.h>
  20 #include <netinet/in_systm.h>
  21 #include <netinet/in.h>
  22 #include <netinet/ip.h>
  23 #include <net/route.h>
  24 #include <netinet/ip_var.h>
  25 #include <netinet/tcp.h>
  26 #include <netinet/tcpip.h>
  27 #include <sys/lkm.h>
  28 #include "ip_compat.h"
  29 #include "ip_fil.h"
  30 #include "ip_rules.h"
  31
  32
  33 static int ipfruleaction __P((struct lkm_table *, int));
  34
  35 #ifdef IPFILTER_LKM
  36 # if NetBSD >= 199706
  37 int     ipfrule_lkmentry __P((struct lkm_table *, int, int));
  38 # else
  39 int     xxxinit __P((struct lkm_table *, int, int));
  40 # endif
  41
  42
  43 MOD_MISC("IPFilter Rules");
  44
  45 # if NetBSD >= 199706
  46 int ipfrule_lkmentry(lkmtp, cmd, ver)
  47 # else
  48 int xxxinit(lkmtp, cmd, ver)
  49 # endif
  50 struct lkm_table *lkmtp;
  51 int cmd, ver;
  52 {
  53         DISPATCH(lkmtp, cmd, ver, ipfruleaction, ipfruleaction, ipfruleaction);
  54 }
  55
  56 static int ipfruleaction(lkmtp, cmd)
  57 struct lkm_table *lkmtp;
  58 int cmd;
  59 {
  60         int err = 0;
  61
  62         switch (cmd)
  63         {
  64         case LKM_E_LOAD :
  65                 if (lkmexists(lkmtp))
  66                         return EEXIST;
  67
  68                 err = ipfrule_add();
  69                 if (!err)
  70                         fr_refcnt++;
  71                 break;
  72         case LKM_E_UNLOAD :
  73                 err = ipfrule_remove();
  74                 if (!err)
  75                         fr_refcnt--;
  76                 break;
  77         case LKM_E_STAT :
  78                 break;
  79         default:
  80                 err = EIO;
  81                 break;
  82         }
  83         return err;
  84 }
  85 #endif /* IPFILTER_LKM */