1/* 2 * tc_util.c Misc TC utility functions. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 * 9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> 10 * 11 */ 12 13#include <stdio.h> 14#include <stdlib.h> 15#include <unistd.h> 16#include <syslog.h> 17#include <fcntl.h> 18#include <sys/socket.h> 19#include <netinet/in.h> 20#include <arpa/inet.h> 21#include <string.h> 22#include <math.h> 23 24#include "utils.h" 25#include "tc_util.h" 26 27int get_qdisc_handle(__u32 *h, char *str) 28{ 29 __u32 maj; 30 char *p; 31 32 maj = TC_H_UNSPEC; 33 if (strcmp(str, "none") == 0) 34 goto ok; 35 maj = strtoul(str, &p, 16); 36 if (p == str) 37 return -1; 38 maj <<= 16; 39 if (*p != ':' && *p!=0) 40 return -1; 41ok: 42 *h = maj; 43 return 0; 44} 45 46int get_tc_classid(__u32 *h, char *str) 47{ 48 __u32 maj, min; 49 char *p; 50 51 maj = TC_H_ROOT; 52 if (strcmp(str, "root") == 0) 53 goto ok; 54 maj = TC_H_UNSPEC; 55 if (strcmp(str, "none") == 0) 56 goto ok; 57 maj = strtoul(str, &p, 16); 58 if (p == str) { 59 maj = 0; 60 if (*p != ':') 61 return -1; 62 } 63 if (*p == ':') { 64 maj <<= 16; 65 str = p+1; 66 min = strtoul(str, &p, 16); 67 if (*p != 0) 68 return -1; 69 maj |= min; 70 } else if (*p != 0) 71 return -1; 72 73ok: 74 *h = maj; 75 return 0; 76} 77 78int print_tc_classid(char *buf, int len, __u32 h) 79{ 80 if (h == TC_H_ROOT) 81 sprintf(buf, "root"); 82 else if (h == TC_H_UNSPEC) 83 snprintf(buf, len, "none"); 84 else if (TC_H_MAJ(h) == 0) 85 snprintf(buf, len, ":%x", TC_H_MIN(h)); 86 else if (TC_H_MIN(h) == 0) 87 snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16); 88 else 89 snprintf(buf, len, "%x:%x", TC_H_MAJ(h)>>16, TC_H_MIN(h)); 90 return 0; 91} 92 93char * sprint_tc_classid(__u32 h, char *buf) 94{ 95 if (print_tc_classid(buf, SPRINT_BSIZE-1, h)) 96 strcpy(buf, "???"); 97 return buf; 98} 99 100 101int get_rate(unsigned *rate, char *str) 102{ 103 char *p; 104 double bps = strtod(str, &p); 105 106 if (p == str) 107 return -1; 108 109 if (*p) { 110 if (strcasecmp(p, "kbps") == 0) 111 bps *= 1024; 112 else if (strcasecmp(p, "mbps") == 0) 113 bps *= 1024*1024; 114 else if (strcasecmp(p, "mbit") == 0) 115 bps *= 1024*1024/8; 116 else if (strcasecmp(p, "kbit") == 0) 117 bps *= 1024/8; 118 else if (strcasecmp(p, "bps") != 0) 119 return -1; 120 } else 121 bps /= 8; 122 123 *rate = bps; 124 return 0; 125} 126 127int get_rate_and_cell(unsigned *rate, int *cell_log, char *str) 128{ 129 char * slash = strchr(str, '/'); 130 131 if (slash) 132 *slash = 0; 133 134 if (get_rate(rate, str)) 135 return -1; 136 137 if (slash) { 138 int cell; 139 int i; 140 141 if (get_integer(&cell, slash+1, 0)) 142 return -1; 143 *slash = '/'; 144 145 for (i=0; i<32; i++) { 146 if ((1<<i) == cell) { 147 *cell_log = i; 148 return 0; 149 } 150 } 151 return -1; 152 } 153 return 0; 154} 155 156 157int print_rate(char *buf, int len, __u32 rate) 158{ 159 double tmp = (double)rate*8; 160 161 if (tmp >= 1024*1023 && fabs(1024*1024*rint(tmp/(1024*1024)) - tmp) < 1024) 162 snprintf(buf, len, "%gMbit", rint(tmp/(1024*1024))); 163 else if (tmp >= 1024-16 && fabs(1024*rint(tmp/1024) - tmp) < 16) 164 snprintf(buf, len, "%gKbit", rint(tmp/1024)); 165 else 166 snprintf(buf, len, "%ubps", rate); 167 return 0; 168} 169 170char * sprint_rate(__u32 rate, char *buf) 171{ 172 if (print_rate(buf, SPRINT_BSIZE-1, rate)) 173 strcpy(buf, "???"); 174 return buf; 175} 176 177int get_usecs(unsigned *usecs, char *str) 178{ 179 double t; 180 char *p; 181 182 t = strtod(str, &p); 183 if (p == str) 184 return -1; 185 186 if (*p) { 187 if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 || 188 strcasecmp(p, "secs")==0) 189 t *= 1000000; 190 else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 || 191 strcasecmp(p, "msecs") == 0) 192 t *= 1000; 193 else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 || 194 strcasecmp(p, "usecs") == 0) 195 t *= 1; 196 else 197 return -1; 198 } 199 200 *usecs = t; 201 return 0; 202} 203 204 205int print_usecs(char *buf, int len, __u32 usec) 206{ 207 double tmp = usec; 208 209 if (tmp >= 1000000) 210 snprintf(buf, len, "%.1fs", tmp/1000000); 211 else if (tmp >= 1000) 212 snprintf(buf, len, "%.1fms", tmp/1000); 213 else 214 snprintf(buf, len, "%uus", usec); 215 return 0; 216} 217 218char * sprint_usecs(__u32 usecs, char *buf) 219{ 220 if (print_usecs(buf, SPRINT_BSIZE-1, usecs)) 221 strcpy(buf, "???"); 222 return buf; 223} 224 225int get_size(unsigned *size, char *str) 226{ 227 double sz; 228 char *p; 229 230 sz = strtod(str, &p); 231 if (p == str) 232 return -1; 233 234 if (*p) { 235 if (strcasecmp(p, "kb") == 0 || strcasecmp(p, "k")==0) 236 sz *= 1024; 237 else if (strcasecmp(p, "mb") == 0 || strcasecmp(p, "m")==0) 238 sz *= 1024*1024; 239 else if (strcasecmp(p, "mbit") == 0) 240 sz *= 1024*1024/8; 241 else if (strcasecmp(p, "kbit") == 0) 242 sz *= 1024/8; 243 else if (strcasecmp(p, "b") != 0) 244 return -1; 245 } 246 247 *size = sz; 248 return 0; 249} 250 251int get_size_and_cell(unsigned *size, int *cell_log, char *str) 252{ 253 char * slash = strchr(str, '/'); 254 255 if (slash) 256 *slash = 0; 257 258 if (get_size(size, str)) 259 return -1; 260 261 if (slash) { 262 int cell; 263 int i; 264 265 if (get_integer(&cell, slash+1, 0)) 266 return -1; 267 *slash = '/'; 268 269 for (i=0; i<32; i++) { 270 if ((1<<i) == cell) { 271 *cell_log = i; 272 return 0; 273 } 274 } 275 return -1; 276 } 277 return 0; 278} 279 280int print_size(char *buf, int len, __u32 sz) 281{ 282 double tmp = sz; 283 284 if (sz >= 1024*1024 && fabs(1024*1024*rint(tmp/(1024*1024)) - sz) < 1024) 285 snprintf(buf, len, "%gMb", rint(tmp/(1024*1024))); 286 else if (sz >= 1024 && fabs(1024*rint(tmp/1024) - sz) < 16) 287 snprintf(buf, len, "%gKb", rint(tmp/1024)); 288 else 289 snprintf(buf, len, "%ub", sz); 290 return 0; 291} 292 293char * sprint_size(__u32 size, char *buf) 294{ 295 if (print_size(buf, SPRINT_BSIZE-1, size)) 296 strcpy(buf, "???"); 297 return buf; 298} 299 300int print_qdisc_handle(char *buf, int len, __u32 h) 301{ 302 snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16); 303 return 0; 304} 305 306char * sprint_qdisc_handle(__u32 h, char *buf) 307{ 308 if (print_qdisc_handle(buf, SPRINT_BSIZE-1, h)) 309 strcpy(buf, "???"); 310 return buf; 311} 312 313 314