1 /*- 2 * Copyright (c) 2009 Hiroki Sato. 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 #ifndef lint 27 static const char rcsid[] = 28 "$FreeBSD$"; 29 #endif 30 31 #include <sys/param.h> 32 #include <sys/ioctl.h> 33 #include <sys/socket.h> 34 #include <sys/sockio.h> 35 36 #include <stdlib.h> 37 #include <unistd.h> 38 39 #include <net/ethernet.h> 40 #include <net/if.h> 41 #include <net/if_gif.h> 42 #include <net/route.h> 43 44 #include <ctype.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 #include <err.h> 50 #include <errno.h> 51 52 #include "ifconfig.h" 53 54 static void gif_status(int); 55 56 static struct { 57 const char *label; 58 u_int mask; 59 } gif_opts[] = { 60 { "ACCEPT_REV_ETHIP_VER", GIF_ACCEPT_REVETHIP }, 61 { "SEND_REV_ETHIP_VER", GIF_SEND_REVETHIP }, 62 }; 63 64 static void 65 gif_status(int s) 66 { 67 int opts; 68 int nopts = 0; 69 size_t i; 70 71 ifr.ifr_data = (caddr_t)&opts; 72 if (ioctl(s, GIFGOPTS, &ifr) == -1) 73 return; 74 75 printf("\toptions=%d<", opts); 76 for (i=0; i < sizeof(gif_opts)/sizeof(gif_opts[0]); i++) { 77 if (opts & gif_opts[i].mask) { 78 if (nopts++) 79 printf(","); 80 printf("%s", gif_opts[i].label); 81 } 82 } 83 printf(">\n"); 84 } 85 86 static void 87 setgifopts(const char *val, 88 int d, int s, const struct afswtch *afp) 89 { 90 int opts; 91 92 ifr.ifr_data = (caddr_t)&opts; 93 if (ioctl(s, GIFGOPTS, &ifr) == -1) { 94 warn("ioctl(GIFGOPTS)"); 95 return; 96 } 97 98 if (d < 0) 99 opts &= ~(-d); 100 else 101 opts |= d; 102 103 if (ioctl(s, GIFSOPTS, &ifr) == -1) { 104 warn("ioctl(GIFSOPTS)"); 105 return; 106 } 107 } 108 109 static struct cmd gif_cmds[] = { 110 DEF_CMD("accept_rev_ethip_ver", GIF_ACCEPT_REVETHIP, setgifopts), 111 DEF_CMD("-accept_rev_ethip_ver",-GIF_ACCEPT_REVETHIP, setgifopts), 112 DEF_CMD("send_rev_ethip_ver", GIF_SEND_REVETHIP, setgifopts), 113 DEF_CMD("-send_rev_ethip_ver", -GIF_SEND_REVETHIP, setgifopts), 114 }; 115 116 static struct afswtch af_gif = { 117 .af_name = "af_gif", 118 .af_af = AF_UNSPEC, 119 .af_other_status = gif_status, 120 }; 121 122 static __constructor void 123 gif_ctor(void) 124 { 125 #define N(a) (sizeof(a) / sizeof(a[0])) 126 size_t i; 127 128 for (i = 0; i < N(gif_cmds); i++) 129 cmd_register(&gif_cmds[i]); 130 af_register(&af_gif); 131 #undef N 132 } 133