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/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/lock.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/rwlock.h> 38 #include <sys/socket.h> 39 40 #include <net/if.h> 41 #include <net/vnet.h> 42 43 #include <netinet/in.h> 44 #include <netinet/ip_var.h> 45 #include <netinet/ip_fw.h> 46 47 #include <netpfil/ipfw/ip_fw_private.h> 48 #include <netpfil/ipfw/pmod/pmod.h> 49 50 static int 51 vnet_ipfw_pmod_init(const void *arg __unused) 52 { 53 int error; 54 55 error = tcpmod_init(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)); 56 return (error); 57 } 58 59 static int 60 vnet_ipfw_pmod_uninit(const void *arg __unused) 61 { 62 63 tcpmod_uninit(&V_layer3_chain, IS_DEFAULT_VNET(curvnet)); 64 return (0); 65 } 66 67 static int 68 ipfw_pmod_modevent(module_t mod, int type, void *unused) 69 { 70 71 switch (type) { 72 case MOD_LOAD: 73 case MOD_UNLOAD: 74 break; 75 default: 76 return (EOPNOTSUPP); 77 } 78 return (0); 79 } 80 81 static moduledata_t ipfw_pmod_mod = { 82 "ipfw_pmod", 83 ipfw_pmod_modevent, 84 0 85 }; 86 87 /* Define startup order. */ 88 #define IPFW_PMOD_SI_SUB_FIREWALL SI_SUB_PROTO_IFATTACHDOMAIN 89 #define IPFW_PMOD_MODEVENT_ORDER (SI_ORDER_ANY - 128) /* after ipfw */ 90 #define IPFW_PMOD_MODULE_ORDER (IPFW_PMOD_MODEVENT_ORDER + 1) 91 #define IPFW_PMOD_VNET_ORDER (IPFW_PMOD_MODEVENT_ORDER + 2) 92 93 DECLARE_MODULE(ipfw_pmod, ipfw_pmod_mod, IPFW_PMOD_SI_SUB_FIREWALL, 94 IPFW_PMOD_MODULE_ORDER); 95 MODULE_DEPEND(ipfw_pmod, ipfw, 3, 3, 3); 96 MODULE_VERSION(ipfw_pmod, 1); 97 98 VNET_SYSINIT(vnet_ipfw_pmod_init, IPFW_PMOD_SI_SUB_FIREWALL, 99 IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_init, NULL); 100 VNET_SYSUNINIT(vnet_ipfw_pmod_uninit, IPFW_PMOD_SI_SUB_FIREWALL, 101 IPFW_PMOD_VNET_ORDER, vnet_ipfw_pmod_uninit, NULL); 102