1 /*- 2 * Copyright (c) 2008 Andrew Thompson. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 17 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 19 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 21 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 22 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 __FBSDID("$FreeBSD$"); 28 29 #include <sys/param.h> 30 #include <sys/ioctl.h> 31 #include <sys/socket.h> 32 #include <sys/sockio.h> 33 #include <net/if.h> 34 #include <net/if_gre.h> 35 36 #include <ctype.h> 37 #include <limits.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <err.h> 42 43 #include "ifconfig.h" 44 45 #define GREBITS "\020\01ENABLE_CSUM\02ENABLE_SEQ" 46 47 static void gre_status(int s); 48 49 static void 50 gre_status(int s) 51 { 52 uint32_t opts = 0; 53 54 ifr.ifr_data = (caddr_t)&opts; 55 if (ioctl(s, GREGKEY, &ifr) == 0) 56 if (opts != 0) 57 printf("\tgrekey: 0x%x (%u)\n", opts, opts); 58 opts = 0; 59 if (ioctl(s, GREGOPTS, &ifr) != 0 || opts == 0) 60 return; 61 printb("\toptions", opts, GREBITS); 62 putchar('\n'); 63 } 64 65 static void 66 setifgrekey(const char *val, int dummy __unused, int s, 67 const struct afswtch *afp) 68 { 69 uint32_t grekey = strtol(val, NULL, 0); 70 71 strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 72 ifr.ifr_data = (caddr_t)&grekey; 73 if (ioctl(s, GRESKEY, (caddr_t)&ifr) < 0) 74 warn("ioctl (set grekey)"); 75 } 76 77 static void 78 setifgreopts(const char *val, int d, int s, const struct afswtch *afp) 79 { 80 uint32_t opts; 81 82 ifr.ifr_data = (caddr_t)&opts; 83 if (ioctl(s, GREGOPTS, &ifr) == -1) { 84 warn("ioctl(GREGOPTS)"); 85 return; 86 } 87 88 if (d < 0) 89 opts &= ~(-d); 90 else 91 opts |= d; 92 93 if (ioctl(s, GRESOPTS, &ifr) == -1) { 94 warn("ioctl(GIFSOPTS)"); 95 return; 96 } 97 } 98 99 100 static struct cmd gre_cmds[] = { 101 DEF_CMD_ARG("grekey", setifgrekey), 102 DEF_CMD("enable_csum", GRE_ENABLE_CSUM, setifgreopts), 103 DEF_CMD("-enable_csum",-GRE_ENABLE_CSUM,setifgreopts), 104 DEF_CMD("enable_seq", GRE_ENABLE_SEQ, setifgreopts), 105 DEF_CMD("-enable_seq",-GRE_ENABLE_SEQ, setifgreopts), 106 }; 107 static struct afswtch af_gre = { 108 .af_name = "af_gre", 109 .af_af = AF_UNSPEC, 110 .af_other_status = gre_status, 111 }; 112 113 static __constructor void 114 gre_ctor(void) 115 { 116 size_t i; 117 118 for (i = 0; i < nitems(gre_cmds); i++) 119 cmd_register(&gre_cmds[i]); 120 af_register(&af_gre); 121 } 122