FreeBSD/Linux Kernel Cross Reference
sys/netpfil/ipfw/pmod/ip_fw_pmod.c

     /*-
      * Copyright (c) 2017 Yandex LLC
      * Copyright (c) 2017 Andrey V. Elsukov <ae@FreeBSD.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      *
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/lock.h>
    #include <sys/malloc.h>
    #include <sys/module.h>
    #include <sys/rwlock.h>
    #include <sys/socket.h>
    
    #include <net/if.h>
    #include <net/vnet.h>
    
    #include <netinet/in.h>
    #include <netinet/ip_var.h>
    #include <netinet/ip_fw.h>
    
    #include <netpfil/ipfw/ip_fw_private.h>
    #include <netpfil/ipfw/pmod/pmod.h>
    
    static int
    vnet_ipfw_pmod_init(const void *arg __unused)
    {
            int error;
    
            error = tcpmod_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet));
            return (error);
    }
    
    static int
    vnet_ipfw_pmod_uninit(const void *arg __unused)
    {
    
            tcpmod_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet));
            return (0);
    }
    
    static int
    ipfw_pmod_modevent(module_t mod, int type, void *unused)
    {
    
            switch (type) {
            case MOD_LOAD:
            case MOD_UNLOAD:
                    break;
            default:
                    return (EOPNOTSUPP);
            }
            return (0);
    }
    
    static moduledata_t ipfw_pmod_mod = {
            "ipfw_pmod",
            ipfw_pmod_modevent,
            0
    };
    
    /* Define startup order. */
    #define IPFW_PMOD_SI_SUB_FIREWALL       SI_SUB_PROTO_IFATTACHDOMAIN
    #define IPFW_PMOD_MODEVENT_ORDER        (SI_ORDER_ANY - 128) /* after ipfw */
    #define IPFW_PMOD_MODULE_ORDER          (IPFW_PMOD_MODEVENT_ORDER + 1)
    #define IPFW_PMOD_VNET_ORDER            (IPFW_PMOD_MODEVENT_ORDER + 2)
    
    DECLARE_MODULE(ipfw_pmod, ipfw_pmod_mod, IPFW_PMOD_SI_SUB_FIREWALL,
        IPFW_PMOD_MODULE_ORDER);
    MODULE_DEPEND(ipfw_pmod, ipfw, 3, 3, 3);
    MODULE_VERSION(ipfw_pmod, 1);
    
    VNET_SYSINIT(vnet_ipfw_pmod_init, IPFW_PMOD_SI_SUB_FIREWALL,
        IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_init, NULL);
   VNET_SYSUNINIT(vnet_ipfw_pmod_uninit, IPFW_PMOD_SI_SUB_FIREWALL,
       IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_uninit, NULL);

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