Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/altq/altq_jobs.h
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1 /* $NetBSD: altq_jobs.h,v 1.4 2008/08/29 00:40:42 gmcgarry Exp $ */ 2 /* $KAME: altq_jobs.h,v 1.6 2003/07/10 12:07:48 kjc Exp $ */ 3 /* 4 * Copyright (c) 2001, Rector and Visitors of the University of 5 * Virginia. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, 9 * with or without modification, are permitted provided 10 * that the following conditions are met: 11 * 12 * Redistributions of source code must retain the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer. 15 * 16 * Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * Neither the name of the University of Virginia nor the names 22 * of its contributors may be used to endorse or promote products 23 * derived from this software without specific prior written 24 * permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 27 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 28 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 30 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 31 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 32 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 33 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 37 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 38 * THE POSSIBILITY OF SUCH DAMAGE. 39 */ 40 /* 41 * JoBS - altq prototype implementation 42 * 43 * Author: Nicolas Christin <nicolas@cs.virginia.edu> 44 * 45 * JoBS algorithms originally devised and proposed by 46 * Nicolas Christin and Jorg Liebeherr. 47 * Grateful Acknowledgments to Tarek Abdelzaher for his help and 48 * comments, and to Kenjiro Cho for some helpful advice. 49 * Contributed by the Multimedia Networks Group at the University 50 * of Virginia. 51 * 52 * Papers and additional info can be found at 53 * http://qosbox.cs.virginia.edu 54 * 55 */ 56 57 #ifndef _ALTQ_ALTQ_JOBS_H_ 58 #define _ALTQ_ALTQ_JOBS_H_ 59 60 #include <altq/altq.h> 61 #include <altq/altq_classq.h> 62 63 #ifdef __cplusplus 64 extern "C" { 65 #endif 66 67 #define JOBS_MAXPRI 16 /* upper limit on the number of priorities */ 68 #define SCALE_RATE 32 69 #define SCALE_LOSS 32 70 #define SCALE_SHARE 16 71 #define GRANULARITY 1000000 /* microseconds */ 72 #ifndef INFINITY 73 #define INFINITY LLONG_MAX 74 #endif 75 76 /* list of packet arrival times */ 77 struct _tsentry; 78 typedef TAILQ_HEAD(_timestamps, _tsentry) TSLIST; 79 typedef struct _tsentry { 80 TAILQ_ENTRY(_tsentry) ts_list; 81 uint64_t timestamp; 82 } TSENTRY; 83 84 /* 85 * timestamp list macros 86 */ 87 88 #define tslist_first(s) TAILQ_FIRST(s) 89 #define tslist_last(s) TAILQ_LAST(s, _timestamps) 90 #define tslist_empty(s) TAILQ_EMPTY(s) 91 92 /* 93 * scaling/conversion macros 94 * none of these macros present side-effects, hence the lowercase 95 */ 96 97 #define secs_to_ticks(x) ((x) * machclk_freq) 98 #define ticks_to_secs(x) ((x) / machclk_freq) 99 #define invsecs_to_invticks(x) ticks_to_secs(x) 100 #define invticks_to_invsecs(x) secs_to_ticks(x) 101 #define bits_to_bytes(x) ((x) >> 3) 102 #define bytes_to_bits(x) ((x) << 3) 103 #define scale_rate(x) ((x) << SCALE_RATE) 104 #define unscale_rate(x) ((x) >> SCALE_RATE) 105 #define bps_to_internal(x) (invsecs_to_invticks(bits_to_bytes(scale_rate(x)))) 106 #define internal_to_bps(x) (unscale_rate(invticks_to_invsecs(bytes_to_bits(x)))) 107 108 /* 109 * this macro takes care of possible wraparound 110 * effects in the computation of a delay 111 * no side-effects here either 112 */ 113 114 #define delay_diff(x, y) ((x >= y)?(x - y):((ULLONG_MAX-y)+x+1)) 115 116 /* 117 * additional macros (PKTCNTR_ADD can be found 118 * in the original distribution) 119 */ 120 121 #define PKTCNTR_SUB(cntr, len) do { \ 122 (cntr)->packets--; \ 123 (cntr)->bytes -= len; \ 124 } while (/*CONSTCOND*/ 0) 125 126 #define PKTCNTR_RESET(cntr) do { \ 127 (cntr)->packets = 0; \ 128 (cntr)->bytes = 0; \ 129 } while (/*CONSTCOND*/ 0) 130 131 struct jobs_interface { 132 char jobs_ifname[IFNAMSIZ]; /* interface name (e.g., fxp0) */ 133 u_long arg; /* request-specific argument */ 134 }; 135 struct jobs_attach { 136 struct jobs_interface iface; 137 u_int bandwidth; /* link bandwidth in bits/sec */ 138 u_int qlimit; /* buffer size in packets */ 139 u_int separate; /* separate buffers flag */ 140 }; 141 142 struct jobs_add_class { 143 struct jobs_interface iface; 144 int pri; /* priority (0 is the lowest) */ 145 int flags; /* misc flags (see below) */ 146 147 /* 148 * Delay Bound (-1 = NO ADC) is provided in us, 149 * and is converted to clock ticks 150 */ 151 int64_t cl_adc; 152 153 /* 154 * Loss Rate Bound (-1 = NO ALC) is provided in fraction of 1 155 * and is converted to a fraction of 2^(SCALE_LOSS) 156 */ 157 int64_t cl_alc; 158 159 /* 160 * lower bound on throughput (-1 = no ARC) 161 * is provided in (string) and 162 * is converted to internal format 163 */ 164 int64_t cl_arc; 165 166 /* RDC weight (-1 = NO RDC) - no unit */ 167 int64_t cl_rdc; 168 169 /* RLC weight (-1 = NO RLC) - no unit */ 170 int64_t cl_rlc; 171 172 u_long class_handle; /* return value */ 173 }; 174 175 /* jobs class flags */ 176 #define JOCF_CLEARDSCP 0x0010 /* clear diffserv codepoint */ 177 #define JOCF_DEFAULTCLASS 0x1000 /* default class */ 178 179 /* special class handles */ 180 #define JOBS_NULLCLASS_HANDLE 0 181 182 struct jobs_delete_class { 183 struct jobs_interface iface; 184 u_long class_handle; 185 }; 186 187 struct jobs_modify_class { 188 struct jobs_interface iface; 189 u_long class_handle; 190 int pri; 191 192 /* 193 * Delay Bound (-1 = NO ADC) is provided in us, 194 * and is converted to clock ticks 195 */ 196 int64_t cl_adc; 197 198 /* 199 * Loss Rate Bound (-1 = NO ALC) is provided in fraction of 1 200 * and is converted to a fraction of 2^(SCALE_LOSS) 201 */ 202 int64_t cl_alc; 203 204 /* 205 * lower bound on throughput (-1 = no ARC) 206 * is provided in (string) and 207 * is converted to internal format 208 */ 209 int64_t cl_arc; 210 211 /* RDC weight (-1 = NO RDC) - no unit */ 212 int64_t cl_rdc; 213 214 /* RLC weight (-1 = NO RLC) - no unit */ 215 int64_t cl_rlc; 216 217 int flags; 218 }; 219 220 struct jobs_add_filter { 221 struct jobs_interface iface; 222 u_long class_handle; 223 #ifdef ALTQ3_CLFIER_COMPAT 224 struct flow_filter filter; 225 #endif 226 u_long filter_handle; /* return value */ 227 }; 228 229 struct jobs_delete_filter { 230 struct jobs_interface iface; 231 u_long filter_handle; 232 }; 233 234 struct class_stats { 235 u_int adc_violations; 236 u_int totallength; 237 u_int period; 238 u_int qlength; 239 240 u_long class_handle; 241 242 int64_t service_rate; /* bps that should be out */ 243 244 u_int64_t avg_cycles_dequeue; 245 u_int64_t avg_cycles_enqueue; 246 u_int64_t avg_cycles2_dequeue; 247 u_int64_t avg_cycles2_enqueue; 248 u_int64_t avgdel; /* in us */ 249 u_int64_t bc_cycles_dequeue; 250 u_int64_t bc_cycles_enqueue; 251 u_int64_t busylength; /* in ms */ 252 u_int64_t lastdel; /* in us */ 253 u_int64_t total_dequeued; 254 u_int64_t total_enqueued; 255 u_int64_t wc_cycles_dequeue; 256 u_int64_t wc_cycles_enqueue; 257 258 struct pktcntr arrival; /* rin+dropped */ 259 struct pktcntr arrivalbusy; 260 struct pktcntr rin; /* dropped packet counter */ 261 struct pktcntr rout; /* transmitted packet counter */ 262 struct pktcntr dropcnt; /* dropped packet counter */ 263 }; 264 265 struct jobs_class_stats { 266 struct class_stats *stats; /* pointer to stats array */ 267 int maxpri; /* in/out */ 268 struct jobs_interface iface; 269 }; 270 271 #define JOBS_IF_ATTACH _IOW('Q', 1, struct jobs_attach) 272 #define JOBS_IF_DETACH _IOW('Q', 2, struct jobs_interface) 273 #define JOBS_ENABLE _IOW('Q', 3, struct jobs_interface) 274 #define JOBS_DISABLE _IOW('Q', 4, struct jobs_interface) 275 #define JOBS_CLEAR _IOW('Q', 6, struct jobs_interface) 276 #define JOBS_ADD_CLASS _IOWR('Q', 7, struct jobs_add_class) 277 #define JOBS_DEL_CLASS _IOW('Q', 8, struct jobs_delete_class) 278 #define JOBS_MOD_CLASS _IOW('Q', 9, struct jobs_modify_class) 279 #define JOBS_ADD_FILTER _IOWR('Q', 10, struct jobs_add_filter) 280 #define JOBS_DEL_FILTER _IOW('Q', 11, struct jobs_delete_filter) 281 #define JOBS_GETSTATS _IOWR('Q', 12, struct jobs_class_stats) 282 283 #ifdef _KERNEL 284 285 struct jobs_class { 286 TSLIST *arv_tm; /* list of timestamps */ 287 struct jobs_if *cl_jif; /* back pointer to jif */ 288 class_queue_t *cl_q; /* class queue structure */ 289 290 int cl_pri; /* priority */ 291 int cl_flags; /* class flags */ 292 293 u_long cl_handle; /* class handle */ 294 295 /* control variables */ 296 297 /* 298 * internal representation: 299 * bytes/unit_time << 32 = (bps /8 << 32)*1/machclk_freq 300 */ 301 int64_t service_rate; /* bps that should be out */ 302 int64_t min_rate_adc; /* bps that should be out for ADC/ARC */ 303 304 u_int64_t current_loss; /* % of packets dropped */ 305 u_int64_t cl_lastdel; /* in clock ticks */ 306 u_int64_t cl_avgdel; 307 308 /* statistics */ 309 u_int cl_period; /* backlog period */ 310 struct pktcntr cl_arrival; /* arrived packet counter */ 311 struct pktcntr cl_dropcnt; /* dropped packet counter */ 312 struct pktcntr cl_rin; /* let in packet counter */ 313 struct pktcntr cl_rout; /* transmitted packet counter */ 314 315 316 /* modified deficit round-robin specific variables */ 317 318 /* 319 * rout_th is SCALED for precision, as opposed to rout. 320 */ 321 int64_t st_service_rate; 322 u_int64_t cl_last_rate_update; 323 struct pktcntr cl_rout_th; /* theoretical transmissions */ 324 struct pktcntr st_arrival; /* rin+dropped */ 325 struct pktcntr st_rin; /* dropped packet counter */ 326 struct pktcntr st_rout; /* transmitted packet counter */ 327 struct pktcntr st_dropcnt; /* dropped packet counter */ 328 329 /* service guarantees */ 330 u_int adc_violations; 331 int concerned_adc; 332 int concerned_alc; 333 int concerned_arc; 334 int concerned_rdc; 335 int concerned_rlc; 336 /* 337 * Delay Bound (-1 = NO ADC) is provided in us, 338 * and is converted to clock ticks 339 */ 340 int64_t cl_adc; 341 342 /* 343 * Loss Rate Bound (-1 = NO ALC) is provided in fraction of 1 344 * and is converted to a fraction of 2^(SCALE_LOSS) 345 */ 346 int64_t cl_alc; 347 348 /* 349 * lower bound on throughput (-1 = no ARC) 350 * is provided in (string) and 351 * is converted to internal format 352 */ 353 int64_t cl_arc; 354 355 /* RDC weight (-1 = NO RDC) - no unit */ 356 int64_t cl_rdc; 357 358 /* RLC weight (-1 = NO RLC) - no unit */ 359 int64_t cl_rlc; 360 361 u_int64_t delay_prod_others; 362 u_int64_t loss_prod_others; 363 u_int64_t idletime; 364 }; 365 366 /* 367 * jobs interface state 368 */ 369 struct jobs_if { 370 struct jobs_if *jif_next; /* interface state list */ 371 struct ifaltq *jif_ifq; /* backpointer to ifaltq */ 372 struct jobs_class *jif_default; /* default class */ 373 struct jobs_class *jif_classes[JOBS_MAXPRI]; /* classes */ 374 #ifdef ALTQ3_CLFIER_COMPAT 375 struct acc_classifier jif_classifier; /* classifier */ 376 #endif 377 int jif_maxpri; /* max priority in use */ 378 379 u_int jif_bandwidth; /* link bandwidth in bps */ 380 u_int jif_qlimit; /* buffer size in packets */ 381 u_int jif_separate; /* separate buffers or not */ 382 u_int64_t avg_cycles_dequeue; 383 u_int64_t avg_cycles_enqueue; 384 u_int64_t avg_cycles2_dequeue; 385 u_int64_t avg_cycles2_enqueue; 386 u_int64_t bc_cycles_dequeue; 387 u_int64_t bc_cycles_enqueue; 388 u_int64_t wc_cycles_dequeue; 389 u_int64_t wc_cycles_enqueue; 390 u_int64_t total_dequeued; 391 u_int64_t total_enqueued; 392 }; 393 394 #endif /* _KERNEL */ 395 396 #ifdef __cplusplus 397 } 398 #endif 399 400 #endif /* _ALTQ_ALTQ_JOBS_H_ */
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