1 /*- 2 * Copyright (c) 2017 Yandex LLC 3 * Copyright (c) 2017 Andrey V. Elsukov <ae@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/kernel.h> 31 #include <sys/lock.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/rwlock.h> 35 #include <sys/socket.h> 36 37 #include <net/if.h> 38 #include <net/vnet.h> 39 40 #include <netinet/in.h> 41 #include <netinet/ip_var.h> 42 #include <netinet/ip_fw.h> 43 44 #include <netpfil/ipfw/ip_fw_private.h> 45 #include <netpfil/ipfw/pmod/pmod.h> 46 47 static int 48 vnet_ipfw_pmod_init(const void *arg __unused) 49 { 50 int error; 51 52 error = tcpmod_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)); 53 return (error); 54 } 55 56 static int 57 vnet_ipfw_pmod_uninit(const void *arg __unused) 58 { 59 60 tcpmod_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)); 61 return (0); 62 } 63 64 static int 65 ipfw_pmod_modevent(module_t mod, int type, void *unused) 66 { 67 68 switch (type) { 69 case MOD_LOAD: 70 case MOD_UNLOAD: 71 break; 72 default: 73 return (EOPNOTSUPP); 74 } 75 return (0); 76 } 77 78 static moduledata_t ipfw_pmod_mod = { 79 "ipfw_pmod", 80 ipfw_pmod_modevent, 81 0 82 }; 83 84 /* Define startup order. */ 85 #define IPFW_PMOD_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN 86 #define IPFW_PMOD_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */ 87 #define IPFW_PMOD_MODULE_ORDER (IPFW_PMOD_MODEVENT_ORDER + 1) 88 #define IPFW_PMOD_VNET_ORDER (IPFW_PMOD_MODEVENT_ORDER + 2) 89 90 DECLARE_MODULE(ipfw_pmod, ipfw_pmod_mod, IPFW_PMOD_SI_SUB_FIREWALL, 91 IPFW_PMOD_MODULE_ORDER); 92 MODULE_DEPEND(ipfw_pmod, ipfw, 3, 3, 3); 93 MODULE_VERSION(ipfw_pmod, 1); 94 95 VNET_SYSINIT(vnet_ipfw_pmod_init, IPFW_PMOD_SI_SUB_FIREWALL, 96 IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_init, NULL); 97 VNET_SYSUNINIT(vnet_ipfw_pmod_uninit, IPFW_PMOD_SI_SUB_FIREWALL, 98 IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_uninit, NULL); 99