1 /* $NetBSD: qop_blue.c,v 1.5 2002/03/05 04:11:53 itojun Exp $ */ 2 /* $KAME: qop_blue.c,v 1.6 2001/12/03 08:20:55 kjc Exp $ */ 3 /* 4 * Copyright (C) 1999-2000 5 * Sony Computer Science Laboratories, Inc. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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 SONY CSL AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/socket.h> 31 #include <sys/sockio.h> 32 #include <sys/ioctl.h> 33 #include <sys/fcntl.h> 34 #include <net/if.h> 35 #include <netinet/in.h> 36 #include <arpa/inet.h> 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 #include <stddef.h> 42 #include <string.h> 43 #include <ctype.h> 44 #include <errno.h> 45 #include <syslog.h> 46 #include <netdb.h> 47 48 #include <altq/altq.h> 49 #include <altq/altq_blue.h> 50 #include "altq_qop.h" 51 #include "qop_blue.h" 52 53 static int blue_attach(struct ifinfo *); 54 static int blue_detach(struct ifinfo *); 55 static int blue_enable(struct ifinfo *); 56 static int blue_disable(struct ifinfo *); 57 58 #define BLUE_DEVICE "/dev/altq/blue" 59 60 static int blue_fd = -1; 61 static int blue_refcount = 0; 62 63 static struct qdisc_ops blue_qdisc = { 64 ALTQT_BLUE, 65 "blue", 66 blue_attach, 67 blue_detach, 68 NULL, /* clear */ 69 blue_enable, 70 blue_disable, 71 NULL, /* add class */ 72 NULL, /* modify class */ 73 NULL, /* delete class */ 74 NULL, /* add filter */ 75 NULL /* delete filter */ 76 }; 77 78 /* 79 * parser interface 80 */ 81 #define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0) 82 83 int 84 blue_interface_parser(const char *ifname, int argc, char **argv) 85 { 86 u_int bandwidth = 100000000; /* 100Mbps */ 87 u_int tbrsize = 0; 88 int max_pmark = 4000; 89 int hold_time = 1000; 90 int qlimit = 60; 91 int pkttime = 0; 92 int flags = 0; 93 int packet_size = 1000; 94 95 /* 96 * process options 97 */ 98 while (argc > 0) { 99 if (EQUAL(*argv, "bandwidth")) { 100 argc--; argv++; 101 if (argc > 0) 102 bandwidth = atobps(*argv); 103 } else if (EQUAL(*argv, "tbrsize")) { 104 argc--; argv++; 105 if (argc > 0) 106 tbrsize = atobytes(*argv); 107 } else if (EQUAL(*argv, "packetsize")) { 108 argc--; argv++; 109 if (argc > 0) 110 packet_size = atobytes(*argv); 111 } else if (EQUAL(*argv, "qlimit")) { 112 argc--; argv++; 113 if (argc > 0) 114 qlimit = (int)strtol(*argv, NULL, 0); 115 } else if (EQUAL(*argv, "maxpmark")) { 116 argc--; argv++; 117 if (argc > 0) 118 max_pmark = (int)strtol(*argv, NULL, 0); 119 } else if (EQUAL(*argv, "holdtime")) { 120 argc--; argv++; 121 if (argc > 0) 122 hold_time = (int)strtol(*argv, NULL, 0); 123 } else if (EQUAL(*argv, "blue")) { 124 /* just skip */ 125 } else if (EQUAL(*argv, "ecn")) { 126 flags |= BLUEF_ECN; 127 } else { 128 LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv); 129 return (0); 130 } 131 argc--; argv++; 132 } 133 134 if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0) 135 return (0); 136 137 pkttime = packet_size * 8 * 1000 / (bandwidth / 1000); 138 139 if (qcmd_blue_add_if(ifname, bandwidth, max_pmark, hold_time, 140 qlimit, pkttime, flags) != 0) 141 return (0); 142 return (1); 143 } 144 145 /* 146 * qcmd api 147 */ 148 int 149 qcmd_blue_add_if(const char *ifname, u_int bandwidth, int max_pmark, 150 int hold_time, int qlimit, int pkttime, int flags) 151 { 152 int error; 153 154 error = qop_blue_add_if(NULL, ifname, bandwidth, max_pmark, hold_time, 155 qlimit, pkttime, flags); 156 if (error != 0) 157 LOG(LOG_ERR, errno, "%s: can't add blue on interface '%s'", 158 qoperror(error), ifname); 159 return (error); 160 } 161 162 /* 163 * qop api 164 */ 165 int 166 qop_blue_add_if(struct ifinfo **rp, const char *ifname, u_int bandwidth, 167 int max_pmark, int hold_time, int qlimit, 168 int pkttime, int flags) 169 { 170 struct ifinfo *ifinfo = NULL; 171 struct blue_ifinfo *blue_ifinfo; 172 int error; 173 174 if ((blue_ifinfo = calloc(1, sizeof(*blue_ifinfo))) == NULL) 175 return (QOPERR_NOMEM); 176 blue_ifinfo->max_pmark = max_pmark; 177 blue_ifinfo->hold_time = hold_time; 178 blue_ifinfo->qlimit = qlimit; 179 blue_ifinfo->pkttime = pkttime; 180 blue_ifinfo->flags = flags; 181 182 error = qop_add_if(&ifinfo, ifname, bandwidth, 183 &blue_qdisc, blue_ifinfo); 184 if (error != 0) { 185 free(blue_ifinfo); 186 return (error); 187 } 188 189 if (rp != NULL) 190 *rp = ifinfo; 191 return (0); 192 } 193 194 /* 195 * system call interfaces for qdisc_ops 196 */ 197 static int 198 blue_attach(struct ifinfo *ifinfo) 199 { 200 struct blue_interface iface; 201 struct blue_ifinfo *blue_ifinfo; 202 struct blue_conf conf; 203 204 if (blue_fd < 0 && 205 (blue_fd = open(BLUE_DEVICE, O_RDWR)) < 0 && 206 (blue_fd = open_module(BLUE_DEVICE, O_RDWR)) < 0) { 207 LOG(LOG_ERR, errno, "BLUE open"); 208 return (QOPERR_SYSCALL); 209 } 210 211 blue_refcount++; 212 memset(&iface, 0, sizeof(iface)); 213 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ); 214 215 if (ioctl(blue_fd, BLUE_IF_ATTACH, &iface) < 0) 216 return (QOPERR_SYSCALL); 217 218 /* set blue parameters */ 219 blue_ifinfo = (struct blue_ifinfo *)ifinfo->private; 220 memset(&conf, 0, sizeof(conf)); 221 strncpy(conf.iface.blue_ifname, ifinfo->ifname, IFNAMSIZ); 222 conf.blue_max_pmark = blue_ifinfo->max_pmark; 223 conf.blue_hold_time = blue_ifinfo->hold_time; 224 conf.blue_limit = blue_ifinfo->qlimit; 225 conf.blue_pkttime = blue_ifinfo->pkttime; 226 conf.blue_flags = blue_ifinfo->flags; 227 if (ioctl(blue_fd, BLUE_CONFIG, &conf) < 0) 228 return (QOPERR_SYSCALL); 229 230 #if 1 231 LOG(LOG_INFO, 0, "blue attached to %s", iface.blue_ifname); 232 #endif 233 return (0); 234 } 235 236 static int 237 blue_detach(struct ifinfo *ifinfo) 238 { 239 struct blue_interface iface; 240 241 memset(&iface, 0, sizeof(iface)); 242 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ); 243 244 if (ioctl(blue_fd, BLUE_IF_DETACH, &iface) < 0) 245 return (QOPERR_SYSCALL); 246 247 if (--blue_refcount == 0) { 248 close(blue_fd); 249 blue_fd = -1; 250 } 251 return (0); 252 } 253 254 static int 255 blue_enable(struct ifinfo *ifinfo) 256 { 257 struct blue_interface iface; 258 259 memset(&iface, 0, sizeof(iface)); 260 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ); 261 262 if (ioctl(blue_fd, BLUE_ENABLE, &iface) < 0) 263 return (QOPERR_SYSCALL); 264 return (0); 265 } 266 267 static int 268 blue_disable(struct ifinfo *ifinfo) 269 { 270 struct blue_interface iface; 271 272 memset(&iface, 0, sizeof(iface)); 273 strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ); 274 275 if (ioctl(blue_fd, BLUE_DISABLE, &iface) < 0) 276 return (QOPERR_SYSCALL); 277 return (0); 278 } 279