src/plugin_tc.c

   1 #include "common.h"
   2
   3 #define RRD_TYPE_TC                 "tc"
   4 #define RRD_TYPE_TC_LEN             strlen(RRD_TYPE_TC)
   5
   6 // ----------------------------------------------------------------------------
   7 // /sbin/tc processor
   8 // this requires the script plugins.d/tc-qos-helper.sh
   9
  10 #define TC_LINE_MAX 1024
  11
  12 struct tc_class {
  13     avl avl;
  14
  15     char *id;
  16     uint32_t hash;
  17
  18     char *name;
  19
  20     char *leafid;
  21     uint32_t leaf_hash;
  22
  23     char *parentid;
  24     uint32_t parent_hash;
  25
  26     char hasparent;
  27     char isleaf;
  28     unsigned long long bytes;
  29     unsigned long long packets;
  30     unsigned long long dropped;
  31     unsigned long long overlimits;
  32     unsigned long long requeues;
  33     unsigned long long lended;
  34     unsigned long long borrowed;
  35     unsigned long long giants;
  36     unsigned long long tokens;
  37     unsigned long long ctokens;
  38
  39     RRDDIM *rd_bytes;
  40     RRDDIM *rd_packets;
  41     RRDDIM *rd_dropped;
  42     RRDDIM *rd_tokens;
  43     RRDDIM *rd_ctokens;
  44
  45     char name_updated;
  46     char updated;   // updated bytes
  47     int seen;       // seen in the tc list (even without bytes)
  48
  49     struct tc_class *next;
  50     struct tc_class *prev;
  51 };
  52
  53 struct tc_device {
  54     avl avl;
  55
  56     char *id;
  57     uint32_t hash;
  58
  59     char *name;
  60     char *family;
  61
  62     char name_updated;
  63     char family_updated;
  64
  65     char enabled;
  66     char enabled_bytes;
  67     char enabled_packets;
  68     char enabled_dropped;
  69     char enabled_tokens;
  70     char enabled_ctokens;
  71
  72     RRDSET *st_bytes;
  73     RRDSET *st_packets;
  74     RRDSET *st_dropped;
  75     RRDSET *st_tokens;
  76     RRDSET *st_ctokens;
  77
  78     avl_tree classes_index;
  79
  80     struct tc_class *classes;
  81
  82     struct tc_device *next;
  83     struct tc_device *prev;
  84 };
  85
  86
  87 struct tc_device *tc_device_root = NULL;
  88
  89 // ----------------------------------------------------------------------------
  90 // tc_device index
  91
  92 static int tc_device_compare(void* a, void* b) {
  93     if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
  94     else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
  95     else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
  96 }
  97
  98 avl_tree tc_device_root_index = {
  99         NULL,
 100         tc_device_compare
 101 };
 102
 103 #define tc_device_index_add(st) avl_insert(&tc_device_root_index, (avl *)(st))
 104 #define tc_device_index_del(st) avl_remove(&tc_device_root_index, (avl *)(st))
 105
 106 static inline struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
 107     struct tc_device tmp;
 108     tmp.id = (char *)id;
 109     tmp.hash = (hash)?hash:simple_hash(tmp.id);
 110
 111     return (struct tc_device *)avl_search(&(tc_device_root_index), (avl *)&tmp);
 112 }
 113
 114
 115 // ----------------------------------------------------------------------------
 116 // tc_class index
 117
 118 static int tc_class_compare(void* a, void* b) {
 119     if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
 120     else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
 121     else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
 122 }
 123
 124 #define tc_class_index_add(st, rd) avl_insert(&((st)->classes_index), (avl *)(rd))
 125 #define tc_class_index_del(st, rd) avl_remove(&((st)->classes_index), (avl *)(rd))
 126
 127 static inline struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
 128     struct tc_class tmp;
 129     tmp.id = (char *)id;
 130     tmp.hash = (hash)?hash:simple_hash(tmp.id);
 131
 132     return (struct tc_class *)avl_search(&(st->classes_index), (avl *) &tmp);
 133 }
 134
 135 // ----------------------------------------------------------------------------
 136
 137 static inline void tc_class_free(struct tc_device *n, struct tc_class *c) {
 138     if(c == n->classes) {
 139         if(c->next)
 140             n->classes = c->next;
 141         else
 142             n->classes = c->prev;
 143     }
 144     if(c->next) c->next->prev = c->prev;
 145     if(c->prev) c->prev->next = c->next;
 146
 147     debug(D_TC_LOOP, "Removing from device '%s' class '%s', parentid '%s', leafid '%s', seen=%d", n->id, c->id, c->parentid?c->parentid:"", c->leafid?c->leafid:"", c->seen);
 148
 149     tc_class_index_del(n, c);
 150
 151     freez(c->id);
 152     freez(c->name);
 153     freez(c->leafid);
 154     freez(c->parentid);
 155     freez(c);
 156 }
 157
 158 static inline void tc_device_classes_cleanup(struct tc_device *d) {
 159     static int cleanup_every = 999;
 160
 161     if(unlikely(cleanup_every > 0)) {
 162         cleanup_every = (int) config_get_number("plugin:tc", "cleanup unused classes every", 60);
 163         if(cleanup_every < 0) cleanup_every = -cleanup_every;
 164     }
 165
 166     d->name_updated = 0;
 167     d->family_updated = 0;
 168
 169     struct tc_class *c = d->classes;
 170     while(c) {
 171         if(unlikely(cleanup_every > 0 && c->seen >= cleanup_every)) {
 172             struct tc_class *nc = c->next;
 173             tc_class_free(d, c);
 174             c = nc;
 175         }
 176         else {
 177             c->updated = 0;
 178             c->name_updated = 0;
 179
 180             c = c->next;
 181         }
 182     }
 183 }
 184
 185 static inline void tc_device_commit(struct tc_device *d) {
 186     static int enable_new_interfaces = -1, enable_bytes = -1, enable_packets = -1, enable_dropped = -1, enable_tokens = -1, enable_ctokens = -1;
 187
 188     if(unlikely(enable_new_interfaces == -1)) {
 189         enable_new_interfaces = config_get_boolean_ondemand("plugin:tc", "enable new interfaces detected at runtime", CONFIG_ONDEMAND_YES);
 190         enable_bytes          = config_get_boolean_ondemand("plugin:tc", "enable traffic charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 191         enable_packets        = config_get_boolean_ondemand("plugin:tc", "enable packets charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 192         enable_dropped        = config_get_boolean_ondemand("plugin:tc", "enable dropped charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 193         enable_tokens         = config_get_boolean_ondemand("plugin:tc", "enable tokens charts for all interfaces", CONFIG_ONDEMAND_NO);
 194         enable_ctokens        = config_get_boolean_ondemand("plugin:tc", "enable ctokens charts for all interfaces", CONFIG_ONDEMAND_NO);
 195     }
 196
 197     // we only need to add leaf classes
 198     struct tc_class *c, *x;
 199     unsigned long long bytes_sum = 0, packets_sum = 0, dropped_sum = 0, tokens_sum = 0, ctokens_sum = 0;
 200     int active_classes = 0;
 201
 202     // set all classes
 203     for(c = d->classes ; c ; c = c->next) {
 204         c->isleaf = 1;
 205         c->hasparent = 0;
 206     }
 207
 208     // mark the classes as leafs and parents
 209     for(c = d->classes ; c ; c = c->next) {
 210         if(unlikely(!c->updated)) continue;
 211
 212         for(x = d->classes ; x ; x = x->next) {
 213             if(unlikely(!x->updated)) continue;
 214
 215             if(unlikely(c == x)) continue;
 216
 217             if(x->parentid && (
 218                 (               c->hash      == x->parent_hash && strcmp(c->id,     x->parentid) == 0) ||
 219                 (c->leafid   && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0))) {
 220                 // debug(D_TC_LOOP, "TC: In device '%s', class '%s' (leafid: '%s') has as leaf class '%s' (parentid: '%s').", d->name?d->name:d->id, c->name?c->name:c->id, c->leafid?c->leafid:c->id, x->name?x->name:x->id, x->parentid?x->parentid:x->id);
 221                 c->isleaf = 0;
 222                 x->hasparent = 1;
 223             }
 224         }
 225     }
 226
 227     // debugging only
 228     /*
 229     if(unlikely(debug_flags & D_TC_LOOP)) {
 230         for(c = d->classes ; c ; c = c->next) {
 231             if(c->isleaf && c->hasparent) debug(D_TC_LOOP, "TC: Device '%s', class %s, OK", d->name, c->id);
 232             else debug(D_TC_LOOP, "TC: Device '%s', class %s, IGNORE (isleaf: %d, hasparent: %d, parent: %s)", d->name?d->name:d->id, c->id, c->isleaf, c->hasparent, c->parentid?c->parentid:"(unset)");
 233         }
 234     }
 235     */
 236
 237     // we need at least a class
 238     for(c = d->classes ; c ; c = c->next) {
 239         // debug(D_TC_LOOP, "TC: Device '%s', class '%s', isLeaf=%d, HasParent=%d, Seen=%d", d->name?d->name:d->id, c->name?c->name:c->id, c->isleaf, c->hasparent, c->seen);
 240         if(unlikely(c->updated && c->isleaf && c->hasparent)) {
 241             active_classes++;
 242             bytes_sum += c->bytes;
 243             packets_sum += c->packets;
 244             dropped_sum += c->dropped;
 245             tokens_sum += c->tokens;
 246             ctokens_sum += c->ctokens;
 247         }
 248     }
 249
 250     if(unlikely(!active_classes)) {
 251         debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No leaf classes.", d->name?d->name:d->id);
 252         tc_device_classes_cleanup(d);
 253         return;
 254     }
 255
 256     if(unlikely(d->enabled == (char)-1)) {
 257         char var_name[CONFIG_MAX_NAME + 1];
 258         snprintfz(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
 259         d->enabled         = config_get_boolean_ondemand("plugin:tc", var_name, enable_new_interfaces);
 260
 261         snprintfz(var_name, CONFIG_MAX_NAME, "traffic chart for %s", d->id);
 262         d->enabled_bytes   = config_get_boolean_ondemand("plugin:tc", var_name, enable_bytes);
 263
 264         snprintfz(var_name, CONFIG_MAX_NAME, "packets chart for %s", d->id);
 265         d->enabled_packets = config_get_boolean_ondemand("plugin:tc", var_name, enable_packets);
 266
 267         snprintfz(var_name, CONFIG_MAX_NAME, "dropped packets chart for %s", d->id);
 268         d->enabled_dropped = config_get_boolean_ondemand("plugin:tc", var_name, enable_dropped);
 269
 270         snprintfz(var_name, CONFIG_MAX_NAME, "tokens chart for %s", d->id);
 271         d->enabled_tokens = config_get_boolean_ondemand("plugin:tc", var_name, enable_tokens);
 272
 273         snprintfz(var_name, CONFIG_MAX_NAME, "ctokens chart for %s", d->id);
 274         d->enabled_ctokens = config_get_boolean_ondemand("plugin:tc", var_name, enable_ctokens);
 275     }
 276
 277     debug(D_TC_LOOP, "TC: evaluating TC device '%s'. enabled = %d/%d (bytes: %d/%d, packets: %d/%d, dropped: %d/%d, tokens: %d/%d, ctokens: %d/%d), classes = %d (bytes = %llu, packets = %llu, dropped = %llu, tokens = %llu, ctokens = %llu).",
 278         d->name?d->name:d->id,
 279         d->enabled, enable_new_interfaces,
 280         d->enabled_bytes, enable_bytes,
 281         d->enabled_packets, enable_packets,
 282         d->enabled_dropped, enable_dropped,
 283         d->enabled_tokens, enable_tokens,
 284         d->enabled_ctokens, enable_ctokens,
 285         active_classes,
 286         bytes_sum,
 287         packets_sum,
 288         dropped_sum,
 289         tokens_sum,
 290         ctokens_sum
 291         );
 292
 293     if(likely(d->enabled)) {
 294         // --------------------------------------------------------------------
 295         // bytes
 296
 297         if(d->enabled_bytes == CONFIG_ONDEMAND_YES || (d->enabled_bytes == CONFIG_ONDEMAND_ONDEMAND && bytes_sum)) {
 298             d->enabled_bytes = CONFIG_ONDEMAND_YES;
 299
 300             if(unlikely(!d->st_bytes)) {
 301                 d->st_bytes = rrdset_find_bytype(RRD_TYPE_TC, d->id);
 302                 if(unlikely(!d->st_bytes)) {
 303                     debug(D_TC_LOOP, "TC: Creating new chart for device '%s'", d->name?d->name:d->id);
 304                     d->st_bytes = rrdset_create(RRD_TYPE_TC, d->id, d->name?d->name:d->id, d->family?d->family:d->id, RRD_TYPE_TC ".qos", "Class Usage", "kilobits/s", 7000, rrd_update_every, RRDSET_TYPE_STACKED);
 305                 }
 306             }
 307             else {
 308                 debug(D_TC_LOOP, "TC: Updating chart for device '%s'", d->name?d->name:d->id);
 309                 rrdset_next(d->st_bytes);
 310
 311                 if(unlikely(d->name_updated && d->name && strcmp(d->id, d->name) != 0)) {
 312                     rrdset_set_name(d->st_bytes, d->name);
 313                     d->name_updated = 0;
 314                 }
 315
 316                 // FIXME
 317                 // update the family
 318             }
 319
 320             for(c = d->classes ; c ; c = c->next) {
 321                 if(unlikely(!c->updated)) continue;
 322
 323                 if(c->isleaf && c->hasparent) {
 324                     c->seen++;
 325
 326                     if(unlikely(!c->rd_bytes)) {
 327                         c->rd_bytes = rrddim_find(d->st_bytes, c->id);
 328                         if(unlikely(!c->rd_bytes)) {
 329                             debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s' (name: '%s')", d->st_bytes->id, c->id, c->name);
 330
 331                             // new class, we have to add it
 332                             c->rd_bytes = rrddim_add(d->st_bytes, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 333                         }
 334                         else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", d->st_bytes->id, c->id);
 335                     }
 336
 337                     rrddim_set_by_pointer(d->st_bytes, c->rd_bytes, c->bytes);
 338
 339                     // if it has a name, different to the id
 340                     if(unlikely(c->name_updated && c->name && strcmp(c->id, c->name) != 0)) {
 341                         // update the rrd dimension with the new name
 342                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", d->st_bytes->id, c->rd_bytes->id, c->name);
 343                         rrddim_set_name(d->st_bytes, c->rd_bytes, c->name);
 344                     }
 345                 }
 346             }
 347             rrdset_done(d->st_bytes);
 348         }
 349
 350         // --------------------------------------------------------------------
 351         // packets
 352
 353         if(d->enabled_packets == CONFIG_ONDEMAND_YES || (d->enabled_packets == CONFIG_ONDEMAND_ONDEMAND && packets_sum)) {
 354             d->enabled_packets = CONFIG_ONDEMAND_YES;
 355
 356             if(unlikely(!d->st_packets)) {
 357                 char id[RRD_ID_LENGTH_MAX + 1];
 358                 char name[RRD_ID_LENGTH_MAX + 1];
 359                 snprintfz(id, RRD_ID_LENGTH_MAX, "%s_packets", d->id);
 360                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_packets", d->name?d->name:d->id);
 361
 362                 d->st_packets = rrdset_find_bytype(RRD_TYPE_TC, id);
 363                 if(unlikely(!d->st_packets)) {
 364                     debug(D_TC_LOOP, "TC: Creating new _packets chart for device '%s'", d->name?d->name:d->id);
 365                     d->st_packets = rrdset_create(RRD_TYPE_TC, id, name, d->family?d->family:d->id, RRD_TYPE_TC ".qos_packets", "Class Packets", "packets/s", 7010, rrd_update_every, RRDSET_TYPE_STACKED);
 366                 }
 367             }
 368             else {
 369                 debug(D_TC_LOOP, "TC: Updating _packets chart for device '%s'", d->name?d->name:d->id);
 370                 rrdset_next(d->st_packets);
 371
 372                 // FIXME
 373                 // update the family
 374             }
 375
 376             for(c = d->classes ; c ; c = c->next) {
 377                 if(unlikely(!c->updated)) continue;
 378
 379                 if(c->isleaf && c->hasparent) {
 380                     if(unlikely(!c->rd_packets)) {
 381                         c->rd_packets = rrddim_find(d->st_packets, c->id);
 382                         if(unlikely(!c->rd_packets)) {
 383                             debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s' (name: '%s')", d->st_packets->id, c->id, c->name);
 384
 385                             // new class, we have to add it
 386                             c->rd_packets = rrddim_add(d->st_packets, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_INCREMENTAL);
 387                         }
 388                         else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", d->st_packets->id, c->id);
 389                     }
 390
 391                     rrddim_set_by_pointer(d->st_packets, c->rd_packets, c->packets);
 392
 393                     // if it has a name, different to the id
 394                     if(unlikely(c->name_updated && c->name && strcmp(c->id, c->name) != 0)) {
 395                         // update the rrd dimension with the new name
 396                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", d->st_packets->id, c->rd_packets->id, c->name);
 397                         rrddim_set_name(d->st_packets, c->rd_packets, c->name);
 398                     }
 399                 }
 400             }
 401             rrdset_done(d->st_packets);
 402         }
 403
 404         // --------------------------------------------------------------------
 405         // dropped
 406
 407         if(d->enabled_dropped == CONFIG_ONDEMAND_YES || (d->enabled_dropped == CONFIG_ONDEMAND_ONDEMAND && dropped_sum)) {
 408             d->enabled_dropped = CONFIG_ONDEMAND_YES;
 409
 410             if(unlikely(!d->st_dropped)) {
 411                 char id[RRD_ID_LENGTH_MAX + 1];
 412                 char name[RRD_ID_LENGTH_MAX + 1];
 413                 snprintfz(id, RRD_ID_LENGTH_MAX, "%s_dropped", d->id);
 414                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_dropped", d->name?d->name:d->id);
 415
 416                 d->st_dropped = rrdset_find_bytype(RRD_TYPE_TC, id);
 417                 if(unlikely(!d->st_dropped)) {
 418                     debug(D_TC_LOOP, "TC: Creating new _dropped chart for device '%s'", d->name?d->name:d->id);
 419                     d->st_dropped = rrdset_create(RRD_TYPE_TC, id, name, d->family?d->family:d->id, RRD_TYPE_TC ".qos_dropped", "Class Dropped Packets", "packets/s", 7020, rrd_update_every, RRDSET_TYPE_STACKED);
 420                 }
 421             }
 422             else {
 423                 debug(D_TC_LOOP, "TC: Updating _dropped chart for device '%s'", d->name?d->name:d->id);
 424                 rrdset_next(d->st_dropped);
 425
 426                 // FIXME
 427                 // update the family
 428             }
 429
 430             for(c = d->classes ; c ; c = c->next) {
 431                 if(unlikely(!c->updated)) continue;
 432
 433                 if(c->isleaf && c->hasparent) {
 434                     if(unlikely(!c->rd_dropped)) {
 435                         c->rd_dropped = rrddim_find(d->st_dropped, c->id);
 436                         if(unlikely(!c->rd_dropped)) {
 437                             debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s' (name: '%s')", d->st_dropped->id, c->id, c->name);
 438
 439                             // new class, we have to add it
 440                             c->rd_dropped = rrddim_add(d->st_dropped, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_INCREMENTAL);
 441                         }
 442                         else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", d->st_dropped->id, c->id);
 443                     }
 444
 445                     rrddim_set_by_pointer(d->st_dropped, c->rd_dropped, c->dropped);
 446
 447                     // if it has a name, different to the id
 448                     if(unlikely(c->name_updated && c->name && strcmp(c->id, c->name) != 0)) {
 449                         // update the rrd dimension with the new name
 450                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", d->st_dropped->id, c->rd_dropped->id, c->name);
 451                         rrddim_set_name(d->st_dropped, c->rd_dropped, c->name);
 452                     }
 453                 }
 454             }
 455             rrdset_done(d->st_dropped);
 456         }
 457
 458         // --------------------------------------------------------------------
 459         // tokens
 460
 461         if(d->enabled_tokens == CONFIG_ONDEMAND_YES || (d->enabled_tokens == CONFIG_ONDEMAND_ONDEMAND && tokens_sum)) {
 462             d->enabled_tokens = CONFIG_ONDEMAND_YES;
 463
 464             if(unlikely(!d->st_tokens)) {
 465                 char id[RRD_ID_LENGTH_MAX + 1];
 466                 char name[RRD_ID_LENGTH_MAX + 1];
 467                 snprintfz(id, RRD_ID_LENGTH_MAX, "%s_tokens", d->id);
 468                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_tokens", d->name?d->name:d->id);
 469
 470                 d->st_tokens = rrdset_find_bytype(RRD_TYPE_TC, id);
 471                 if(unlikely(!d->st_tokens)) {
 472                     debug(D_TC_LOOP, "TC: Creating new _tokens chart for device '%s'", d->name?d->name:d->id);
 473                     d->st_tokens = rrdset_create(RRD_TYPE_TC, id, name, d->family?d->family:d->id, RRD_TYPE_TC ".qos_tokens", "Class Tokens", "tokens", 7030, rrd_update_every, RRDSET_TYPE_LINE);
 474                 }
 475             }
 476             else {
 477                 debug(D_TC_LOOP, "TC: Updating _tokens chart for device '%s'", d->name?d->name:d->id);
 478                 rrdset_next(d->st_tokens);
 479
 480                 // FIXME
 481                 // update the family
 482             }
 483
 484             for(c = d->classes ; c ; c = c->next) {
 485                 if(unlikely(!c->updated)) continue;
 486
 487                 if(c->isleaf && c->hasparent) {
 488                     if(unlikely(!c->rd_tokens)) {
 489                         c->rd_tokens = rrddim_find(d->st_tokens, c->id);
 490                         if(unlikely(!c->rd_tokens)) {
 491                             debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s' (name: '%s')", d->st_tokens->id, c->id, c->name);
 492
 493                             // new class, we have to add it
 494                             c->rd_tokens = rrddim_add(d->st_tokens, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_ABSOLUTE);
 495                         }
 496                         else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", d->st_tokens->id, c->id);
 497                     }
 498
 499                     rrddim_set_by_pointer(d->st_tokens, c->rd_tokens, c->tokens);
 500
 501                     // if it has a name, different to the id
 502                     if(unlikely(c->name_updated && c->name && strcmp(c->id, c->name) != 0)) {
 503                         // update the rrd dimension with the new name
 504                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", d->st_tokens->id, c->rd_tokens->id, c->name);
 505                         rrddim_set_name(d->st_tokens, c->rd_tokens, c->name);
 506                     }
 507                 }
 508             }
 509             rrdset_done(d->st_tokens);
 510         }
 511
 512         // --------------------------------------------------------------------
 513         // ctokens
 514
 515         if(d->enabled_ctokens == CONFIG_ONDEMAND_YES || (d->enabled_ctokens == CONFIG_ONDEMAND_ONDEMAND && ctokens_sum)) {
 516             d->enabled_ctokens = CONFIG_ONDEMAND_YES;
 517
 518             if(unlikely(!d->st_ctokens)) {
 519                 char id[RRD_ID_LENGTH_MAX + 1];
 520                 char name[RRD_ID_LENGTH_MAX + 1];
 521                 snprintfz(id, RRD_ID_LENGTH_MAX, "%s_ctokens", d->id);
 522                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_ctokens", d->name?d->name:d->id);
 523
 524                 d->st_ctokens = rrdset_find_bytype(RRD_TYPE_TC, id);
 525                 if(unlikely(!d->st_ctokens)) {
 526                     debug(D_TC_LOOP, "TC: Creating new _ctokens chart for device '%s'", d->name?d->name:d->id);
 527                     d->st_ctokens = rrdset_create(RRD_TYPE_TC, id, name, d->family?d->family:d->id, RRD_TYPE_TC ".qos_ctokens", "Class cTokens", "ctokens", 7040, rrd_update_every, RRDSET_TYPE_LINE);
 528                 }
 529             }
 530             else {
 531                 debug(D_TC_LOOP, "TC: Updating _ctokens chart for device '%s'", d->name?d->name:d->id);
 532                 rrdset_next(d->st_ctokens);
 533
 534                 // FIXME
 535                 // update the family
 536             }
 537
 538             for(c = d->classes ; c ; c = c->next) {
 539                 if(unlikely(!c->updated)) continue;
 540
 541                 if(c->isleaf && c->hasparent) {
 542                     if(unlikely(!c->rd_ctokens)) {
 543                         c->rd_ctokens = rrddim_find(d->st_ctokens, c->id);
 544                         if(unlikely(!c->rd_ctokens)) {
 545                             debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s' (name: '%s')", d->st_ctokens->id, c->id, c->name);
 546
 547                             // new class, we have to add it
 548                             c->rd_ctokens = rrddim_add(d->st_ctokens, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_ABSOLUTE);
 549                         }
 550                         else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", d->st_ctokens->id, c->id);
 551                     }
 552
 553                     rrddim_set_by_pointer(d->st_ctokens, c->rd_ctokens, c->ctokens);
 554
 555                     // if it has a name, different to the id
 556                     if(unlikely(c->name_updated && c->name && strcmp(c->id, c->name) != 0)) {
 557                         // update the rrd dimension with the new name
 558                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", d->st_ctokens->id, c->rd_ctokens->id, c->name);
 559                         rrddim_set_name(d->st_ctokens, c->rd_ctokens, c->name);
 560                     }
 561                 }
 562             }
 563             rrdset_done(d->st_ctokens);
 564         }
 565     }
 566
 567     tc_device_classes_cleanup(d);
 568 }
 569
 570 static inline void tc_device_set_class_name(struct tc_device *d, char *id, char *name)
 571 {
 572     struct tc_class *c = tc_class_index_find(d, id, 0);
 573     if(likely(c)) {
 574         freez(c->name);
 575         c->name = NULL;
 576
 577         if(likely(name && *name && strcmp(c->id, name) != 0)) {
 578             debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
 579             c->name = strdupz(name);
 580             c->name_updated = 1;
 581         }
 582     }
 583 }
 584
 585 static inline void tc_device_set_device_name(struct tc_device *d, char *name) {
 586     freez(d->name);
 587     d->name = NULL;
 588
 589     if(likely(name && *name && strcmp(d->id, name) != 0)) {
 590         debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
 591         d->name = strdupz(name);
 592         d->name_updated = 1;
 593     }
 594 }
 595
 596 static inline void tc_device_set_device_family(struct tc_device *d, char *family) {
 597     freez(d->family);
 598     d->family = NULL;
 599
 600     if(likely(family && *family && strcmp(d->id, family) != 0)) {
 601         debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
 602         d->family = strdupz(family);
 603         d->family_updated = 1;
 604     }
 605     // no need for null termination - it is already null
 606 }
 607
 608 static inline struct tc_device *tc_device_create(char *id)
 609 {
 610     struct tc_device *d = tc_device_index_find(id, 0);
 611
 612     if(!d) {
 613         debug(D_TC_LOOP, "TC: Creating device '%s'", id);
 614
 615         d = callocz(1, sizeof(struct tc_device));
 616
 617         d->id = strdupz(id);
 618         d->hash = simple_hash(d->id);
 619         d->enabled = (char)-1;
 620
 621         avl_init(&d->classes_index, tc_class_compare);
 622         tc_device_index_add(d);
 623
 624         if(!tc_device_root) {
 625             tc_device_root = d;
 626         }
 627         else {
 628             d->next = tc_device_root;
 629             tc_device_root->prev = d;
 630             tc_device_root = d;
 631         }
 632     }
 633
 634     return(d);
 635 }
 636
 637 static inline struct tc_class *tc_class_add(struct tc_device *n, char *id, char *parentid, char *leafid)
 638 {
 639     struct tc_class *c = tc_class_index_find(n, id, 0);
 640
 641     if(!c) {
 642         debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
 643
 644         c = callocz(1, sizeof(struct tc_class));
 645
 646         if(n->classes) n->classes->prev = c;
 647         c->next = n->classes;
 648         n->classes = c;
 649
 650         c->id = strdupz(id);
 651         c->hash = simple_hash(c->id);
 652
 653         if(parentid && *parentid) {
 654             c->parentid = strdupz(parentid);
 655             c->parent_hash = simple_hash(c->parentid);
 656         }
 657
 658         if(leafid && *leafid) {
 659             c->leafid = strdupz(leafid);
 660             c->leaf_hash = simple_hash(c->leafid);
 661         }
 662
 663         tc_class_index_add(n, c);
 664     }
 665
 666     c->seen = 1;
 667
 668     return(c);
 669 }
 670
 671 static inline void tc_device_free(struct tc_device *n)
 672 {
 673     if(n->next) n->next->prev = n->prev;
 674     if(n->prev) n->prev->next = n->next;
 675     if(tc_device_root == n) {
 676         if(n->next) tc_device_root = n->next;
 677         else tc_device_root = n->prev;
 678     }
 679
 680     tc_device_index_del(n);
 681
 682     while(n->classes) tc_class_free(n, n->classes);
 683
 684     freez(n->id);
 685     freez(n->name);
 686     freez(n->family);
 687     freez(n);
 688 }
 689
 690 static inline void tc_device_free_all()
 691 {
 692     while(tc_device_root)
 693         tc_device_free(tc_device_root);
 694 }
 695
 696 #define MAX_WORDS 20
 697
 698 static inline int tc_space(char c) {
 699     switch(c) {
 700     case ' ':
 701     case '\t':
 702     case '\r':
 703     case '\n':
 704         return 1;
 705
 706     default:
 707         return 0;
 708     }
 709 }
 710
 711 static inline void tc_split_words(char *str, char **words, int max_words) {
 712     char *s = str;
 713     int i = 0;
 714
 715     // skip all white space
 716     while(tc_space(*s)) s++;
 717
 718     // store the first word
 719     words[i++] = s;
 720
 721     // while we have something
 722     while(*s) {
 723         // if it is a space
 724         if(unlikely(tc_space(*s))) {
 725
 726             // terminate the word
 727             *s++ = '\0';
 728
 729             // skip all white space
 730             while(tc_space(*s)) s++;
 731
 732             // if we reached the end, stop
 733             if(!*s) break;
 734
 735             // store the next word
 736             if(i < max_words) words[i++] = s;
 737             else break;
 738         }
 739         else s++;
 740     }
 741
 742     // terminate the words
 743     while(i < max_words) words[i++] = NULL;
 744 }
 745
 746 pid_t tc_child_pid = 0;
 747 void *tc_main(void *ptr) {
 748     (void)ptr;
 749
 750     info("TC thread created with task id %d", gettid());
 751
 752     if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 753         error("Cannot set pthread cancel type to DEFERRED.");
 754
 755     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 756         error("Cannot set pthread cancel state to ENABLE.");
 757
 758     struct rusage thread;
 759     RRDSET *stcpu = NULL, *sttime = NULL;
 760
 761     char buffer[TC_LINE_MAX+1] = "";
 762     char *words[MAX_WORDS] = { NULL };
 763
 764     uint32_t BEGIN_HASH = simple_hash("BEGIN");
 765     uint32_t END_HASH = simple_hash("END");
 766     uint32_t CLASS_HASH = simple_hash("class");
 767     uint32_t SENT_HASH = simple_hash("Sent");
 768     uint32_t LENDED_HASH = simple_hash("lended:");
 769     uint32_t TOKENS_HASH = simple_hash("tokens:");
 770     uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
 771     uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
 772     uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
 773     uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
 774 #ifdef DETACH_PLUGINS_FROM_NETDATA
 775     uint32_t MYPID_HASH = simple_hash("MYPID");
 776 #endif
 777     uint32_t first_hash;
 778
 779     snprintfz(buffer, TC_LINE_MAX, "%s/tc-qos-helper.sh", config_get("plugins", "plugins directory", PLUGINS_DIR));
 780     char *tc_script = config_get("plugin:tc", "script to run to get tc values", buffer);
 781
 782     for(;1;) {
 783         if(unlikely(netdata_exit)) break;
 784
 785         FILE *fp;
 786         struct tc_device *device = NULL;
 787         struct tc_class *class = NULL;
 788
 789         snprintfz(buffer, TC_LINE_MAX, "exec %s %d", tc_script, rrd_update_every);
 790         debug(D_TC_LOOP, "executing '%s'", buffer);
 791
 792         fp = mypopen(buffer, &tc_child_pid);
 793         if(unlikely(!fp)) {
 794             error("TC: Cannot popen(\"%s\", \"r\").", buffer);
 795             pthread_exit(NULL);
 796             return NULL;
 797         }
 798
 799         while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
 800             if(unlikely(netdata_exit)) break;
 801
 802             buffer[TC_LINE_MAX] = '\0';
 803             // debug(D_TC_LOOP, "TC: read '%s'", buffer);
 804
 805             tc_split_words(buffer, words, MAX_WORDS);
 806
 807             if(unlikely(!words[0] || !*words[0])) {
 808                 // debug(D_TC_LOOP, "empty line");
 809                 continue;
 810             }
 811             // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
 812
 813             first_hash = simple_hash(words[0]);
 814
 815             if(unlikely(device && first_hash == CLASS_HASH && strcmp(words[0], "class") == 0)) {
 816                 // debug(D_TC_LOOP, "CLASS line on class id='%s', parent='%s', parentid='%s', leaf='%s', leafid='%s'", words[2], words[3], words[4], words[5], words[6]);
 817
 818                 // words[1] : class type
 819                 // words[2] : N:XX
 820                 // words[3] : parent or root
 821                 if(likely(words[1] && words[2] && words[3] && (strcmp(words[3], "parent") == 0 || strcmp(words[3], "root") == 0))) {
 822                     //char *type     = words[1];  // the class: htb, fq_codel, etc
 823
 824                     // we are only interested for HTB classes
 825                     //if(strcmp(type, "htb") != 0) continue;
 826
 827                     char *id       = words[2];  // the class major:minor
 828                     char *parent   = words[3];  // 'parent' or 'root'
 829                     char *parentid = words[4];  // the parent's id
 830                     char *leaf     = words[5];  // 'leaf'
 831                     char *leafid   = words[6];  // leafid
 832
 833                     if(strcmp(parent, "root") == 0) {
 834                         parentid = NULL;
 835                         leafid = NULL;
 836                     }
 837                     else if(!leaf || strcmp(leaf, "leaf") != 0)
 838                         leafid = NULL;
 839
 840                     char leafbuf[20 + 1] = "";
 841                     if(leafid && leafid[strlen(leafid) - 1] == ':') {
 842                         strncpyz(leafbuf, leafid, 20 - 1);
 843                         strcat(leafbuf, "1");
 844                         leafid = leafbuf;
 845                     }
 846
 847                     class = tc_class_add(device, id, parentid, leafid);
 848                 }
 849                 else {
 850                     // clear the last class
 851                     class = NULL;
 852                 }
 853             }
 854             else if(unlikely(first_hash == END_HASH && strcmp(words[0], "END") == 0)) {
 855                 // debug(D_TC_LOOP, "END line");
 856
 857                 if(likely(device)) {
 858                     if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0)
 859                         error("Cannot set pthread cancel state to DISABLE.");
 860
 861                     tc_device_commit(device);
 862                     // tc_device_free(device);
 863
 864                     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 865                         error("Cannot set pthread cancel state to ENABLE.");
 866                 }
 867
 868                 device = NULL;
 869                 class = NULL;
 870             }
 871             else if(unlikely(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0)) {
 872                 // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
 873
 874                 if(likely(words[1] && *words[1])) {
 875                     device = tc_device_create(words[1]);
 876                 }
 877                 else {
 878                     // tc_device_free(device);
 879                     device = NULL;
 880                 }
 881
 882                 class = NULL;
 883             }
 884             else if(unlikely(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0)) {
 885                 // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
 886                 if(likely(words[1] && *words[1])) {
 887                     class->bytes = strtoull(words[1], NULL, 10);
 888                     class->updated = 1;
 889                 }
 890                 else {
 891                     class->updated = 0;
 892                 }
 893
 894                 if(likely(words[3] && *words[3]))
 895                     class->packets = strtoull(words[3], NULL, 10);
 896
 897                 if(likely(words[6] && *words[6]))
 898                     class->dropped = strtoull(words[6], NULL, 10);
 899
 900                 if(likely(words[8] && *words[8]))
 901                     class->overlimits = strtoull(words[8], NULL, 10);
 902
 903                 if(likely(words[10] && *words[10]))
 904                     class->requeues = strtoull(words[8], NULL, 10);
 905             }
 906             else if(unlikely(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0)) {
 907                 // debug(D_TC_LOOP, "LENDED line '%s'", words[1]);
 908                 if(likely(words[1] && *words[1]))
 909                     class->lended = strtoull(words[1], NULL, 10);
 910
 911                 if(likely(words[3] && *words[3]))
 912                     class->borrowed = strtoull(words[3], NULL, 10);
 913
 914                 if(likely(words[5] && *words[5]))
 915                     class->giants = strtoull(words[5], NULL, 10);
 916             }
 917             else if(unlikely(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0)) {
 918                 // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]);
 919                 if(likely(words[1] && *words[1]))
 920                     class->tokens = strtoull(words[1], NULL, 10);
 921
 922                 if(likely(words[3] && *words[3]))
 923                     class->ctokens = strtoull(words[3], NULL, 10);
 924             }
 925             else if(unlikely(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0)) {
 926                 // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
 927                 if(likely(words[1] && *words[1]))
 928                     tc_device_set_device_name(device, words[1]);
 929             }
 930             else if(unlikely(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0)) {
 931                 // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
 932                 if(likely(words[1] && *words[1]))
 933                     tc_device_set_device_family(device, words[1]);
 934             }
 935             else if(unlikely(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0)) {
 936                 // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
 937                 char *id    = words[1];
 938                 char *path  = words[2];
 939                 if(likely(id && *id && path && *path))
 940                     tc_device_set_class_name(device, id, path);
 941             }
 942             else if(unlikely(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0)) {
 943                 // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
 944                 getrusage(RUSAGE_THREAD, &thread);
 945
 946                 if(unlikely(!stcpu)) stcpu = rrdset_find("netdata.plugin_tc_cpu");
 947                 if(unlikely(!stcpu)) {
 948                     stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "tc.helper", NULL, "NetData TC CPU usage", "milliseconds/s", 135000, rrd_update_every, RRDSET_TYPE_STACKED);
 949                     rrddim_add(stcpu, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
 950                     rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
 951                 }
 952                 else rrdset_next(stcpu);
 953
 954                 rrddim_set(stcpu, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
 955                 rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
 956                 rrdset_done(stcpu);
 957
 958                 if(unlikely(!sttime)) stcpu = rrdset_find("netdata.plugin_tc_time");
 959                 if(unlikely(!sttime)) {
 960                     sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "tc.helper", NULL, "NetData TC script execution", "milliseconds/run", 135001, rrd_update_every, RRDSET_TYPE_AREA);
 961                     rrddim_add(sttime, "run_time",  "run time",  1, 1, RRDDIM_ABSOLUTE);
 962                 }
 963                 else rrdset_next(sttime);
 964
 965                 rrddim_set(sttime, "run_time", atoll(words[1]));
 966                 rrdset_done(sttime);
 967
 968             }
 969 #ifdef DETACH_PLUGINS_FROM_NETDATA
 970             else if(unlikely(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0))) {
 971                 // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
 972                 char *id = words[1];
 973                 pid_t pid = atol(id);
 974
 975                 if(likely(pid)) tc_child_pid = pid;
 976
 977                 debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
 978             }
 979 #endif
 980             //else {
 981             //  debug(D_TC_LOOP, "IGNORED line");
 982             //}
 983         }
 984
 985         // fgets() failed or loop broke
 986         int code = mypclose(fp, tc_child_pid);
 987         tc_child_pid = 0;
 988
 989         if(unlikely(device)) {
 990             // tc_device_free(device);
 991             device = NULL;
 992             class = NULL;
 993         }
 994
 995         if(unlikely(netdata_exit)) {
 996             tc_device_free_all();
 997             pthread_exit(NULL);
 998             return NULL;
 999         }
1000
1001         if(code == 1 || code == 127) {
1002             // 1 = DISABLE
1003             // 127 = cannot even run it
1004             error("TC: tc-qos-helper.sh exited with code %d. Disabling it.", code);
1005
1006             tc_device_free_all();
1007             pthread_exit(NULL);
1008             return NULL;
1009         }
1010
1011         sleep((unsigned int) rrd_update_every);
1012     }
1013
1014     pthread_exit(NULL);
1015     return NULL;
1016 }