src/plugin_tc.c

   1 #include "common.h"
   2
   3 #define RRD_TYPE_TC "tc"
   4
   5 // ----------------------------------------------------------------------------
   6 // /sbin/tc processor
   7 // this requires the script plugins.d/tc-qos-helper.sh
   8
   9 #define TC_LINE_MAX 1024
  10
  11 struct tc_class {
  12     avl avl;
  13
  14     char *id;
  15     uint32_t hash;
  16
  17     char *name;
  18
  19     char *leafid;
  20     uint32_t leaf_hash;
  21
  22     char *parentid;
  23     uint32_t parent_hash;
  24
  25     char hasparent;
  26     char isleaf;
  27     char isqdisc;
  28     char render;
  29
  30     unsigned long long bytes;
  31     unsigned long long packets;
  32     unsigned long long dropped;
  33     unsigned long long overlimits;
  34     unsigned long long requeues;
  35     unsigned long long lended;
  36     unsigned long long borrowed;
  37     unsigned long long giants;
  38     unsigned long long tokens;
  39     unsigned long long ctokens;
  40
  41     RRDDIM *rd_bytes;
  42     RRDDIM *rd_packets;
  43     RRDDIM *rd_dropped;
  44     RRDDIM *rd_tokens;
  45     RRDDIM *rd_ctokens;
  46
  47     char name_updated;
  48     char updated;   // updated bytes
  49     int  unupdated; // the number of times, this has been found un-updated
  50
  51     struct tc_class *next;
  52     struct tc_class *prev;
  53 };
  54
  55 struct tc_device {
  56     avl avl;
  57
  58     char *id;
  59     uint32_t hash;
  60
  61     char *name;
  62     char *family;
  63
  64     char name_updated;
  65     char family_updated;
  66
  67     char enabled;
  68     char enabled_bytes;
  69     char enabled_packets;
  70     char enabled_dropped;
  71     char enabled_tokens;
  72     char enabled_ctokens;
  73     char enabled_all_classes_qdiscs;
  74
  75     RRDSET *st_bytes;
  76     RRDSET *st_packets;
  77     RRDSET *st_dropped;
  78     RRDSET *st_tokens;
  79     RRDSET *st_ctokens;
  80
  81     avl_tree classes_index;
  82
  83     struct tc_class *classes;
  84
  85     struct tc_device *next;
  86     struct tc_device *prev;
  87 };
  88
  89
  90 struct tc_device *tc_device_root = NULL;
  91
  92 // ----------------------------------------------------------------------------
  93 // tc_device index
  94
  95 static int tc_device_compare(void* a, void* b) {
  96     if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
  97     else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
  98     else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
  99 }
 100
 101 avl_tree tc_device_root_index = {
 102         NULL,
 103         tc_device_compare
 104 };
 105
 106 #define tc_device_index_add(st) (struct tc_device *)avl_insert(&tc_device_root_index, (avl *)(st))
 107 #define tc_device_index_del(st) (struct tc_device *)avl_remove(&tc_device_root_index, (avl *)(st))
 108
 109 static inline struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
 110     struct tc_device tmp;
 111     tmp.id = (char *)id;
 112     tmp.hash = (hash)?hash:simple_hash(tmp.id);
 113
 114     return (struct tc_device *)avl_search(&(tc_device_root_index), (avl *)&tmp);
 115 }
 116
 117
 118 // ----------------------------------------------------------------------------
 119 // tc_class index
 120
 121 static int tc_class_compare(void* a, void* b) {
 122     if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
 123     else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
 124     else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
 125 }
 126
 127 #define tc_class_index_add(st, rd) (struct tc_class *)avl_insert(&((st)->classes_index), (avl *)(rd))
 128 #define tc_class_index_del(st, rd) (struct tc_class *)avl_remove(&((st)->classes_index), (avl *)(rd))
 129
 130 static inline struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
 131     struct tc_class tmp;
 132     tmp.id = (char *)id;
 133     tmp.hash = (hash)?hash:simple_hash(tmp.id);
 134
 135     return (struct tc_class *)avl_search(&(st->classes_index), (avl *) &tmp);
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139
 140 static inline void tc_class_free(struct tc_device *n, struct tc_class *c) {
 141     if(c == n->classes) {
 142         if(c->next)
 143             n->classes = c->next;
 144         else
 145             n->classes = c->prev;
 146     }
 147     if(c->next) c->next->prev = c->prev;
 148     if(c->prev) c->prev->next = c->next;
 149
 150     debug(D_TC_LOOP, "Removing from device '%s' class '%s', parentid '%s', leafid '%s', unused=%d", n->id, c->id, c->parentid?c->parentid:"", c->leafid?c->leafid:"", c->unupdated);
 151
 152     if(unlikely(tc_class_index_del(n, c) != c))
 153         error("plugin_tc: INTERNAL ERROR: attempt remove class '%s' from device '%s': removed a different calls", c->id, n->id);
 154
 155     freez(c->id);
 156     freez(c->name);
 157     freez(c->leafid);
 158     freez(c->parentid);
 159     freez(c);
 160 }
 161
 162 static inline void tc_device_classes_cleanup(struct tc_device *d) {
 163     static int cleanup_every = 999;
 164
 165     if(unlikely(cleanup_every > 0)) {
 166         cleanup_every = (int) config_get_number("plugin:tc", "cleanup unused classes every", 120);
 167         if(cleanup_every < 0) cleanup_every = -cleanup_every;
 168     }
 169
 170     d->name_updated = 0;
 171     d->family_updated = 0;
 172
 173     struct tc_class *c = d->classes;
 174     while(c) {
 175         if(unlikely(cleanup_every && c->unupdated >= cleanup_every)) {
 176             struct tc_class *nc = c->next;
 177             tc_class_free(d, c);
 178             c = nc;
 179         }
 180         else {
 181             c->updated = 0;
 182             c->name_updated = 0;
 183
 184             c = c->next;
 185         }
 186     }
 187 }
 188
 189 static inline void tc_device_commit(struct tc_device *d) {
 190     static int enable_new_interfaces = -1, enable_bytes = -1, enable_packets = -1, enable_dropped = -1, enable_tokens = -1, enable_ctokens = -1, enabled_all_classes_qdiscs = -1;
 191
 192     if(unlikely(enable_new_interfaces == -1)) {
 193         enable_new_interfaces      = config_get_boolean_ondemand("plugin:tc", "enable new interfaces detected at runtime", CONFIG_ONDEMAND_YES);
 194         enable_bytes               = config_get_boolean_ondemand("plugin:tc", "enable traffic charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 195         enable_packets             = config_get_boolean_ondemand("plugin:tc", "enable packets charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 196         enable_dropped             = config_get_boolean_ondemand("plugin:tc", "enable dropped charts for all interfaces", CONFIG_ONDEMAND_ONDEMAND);
 197         enable_tokens              = config_get_boolean_ondemand("plugin:tc", "enable tokens charts for all interfaces", CONFIG_ONDEMAND_NO);
 198         enable_ctokens             = config_get_boolean_ondemand("plugin:tc", "enable ctokens charts for all interfaces", CONFIG_ONDEMAND_NO);
 199         enabled_all_classes_qdiscs = config_get_boolean_ondemand("plugin:tc", "enable show all classes and qdiscs for all interfaces", CONFIG_ONDEMAND_NO);
 200     }
 201
 202     if(unlikely(d->enabled == (char)-1)) {
 203         char var_name[CONFIG_MAX_NAME + 1];
 204         snprintfz(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
 205
 206         d->enabled                    = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_new_interfaces);
 207
 208         snprintfz(var_name, CONFIG_MAX_NAME, "traffic chart for %s", d->id);
 209         d->enabled_bytes              = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_bytes);
 210
 211         snprintfz(var_name, CONFIG_MAX_NAME, "packets chart for %s", d->id);
 212         d->enabled_packets            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_packets);
 213
 214         snprintfz(var_name, CONFIG_MAX_NAME, "dropped packets chart for %s", d->id);
 215         d->enabled_dropped            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_dropped);
 216
 217         snprintfz(var_name, CONFIG_MAX_NAME, "tokens chart for %s", d->id);
 218         d->enabled_tokens             = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_tokens);
 219
 220         snprintfz(var_name, CONFIG_MAX_NAME, "ctokens chart for %s", d->id);
 221         d->enabled_ctokens            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_ctokens);
 222
 223         snprintfz(var_name, CONFIG_MAX_NAME, "show all classes for %s", d->id);
 224         d->enabled_all_classes_qdiscs = (char)config_get_boolean_ondemand("plugin:tc", var_name, enabled_all_classes_qdiscs);
 225     }
 226
 227     // we only need to add leaf classes
 228     struct tc_class *c, *x /*, *root = NULL */;
 229     unsigned long long bytes_sum = 0, packets_sum = 0, dropped_sum = 0, tokens_sum = 0, ctokens_sum = 0;
 230     int active_nodes = 0, updated_classes = 0, updated_qdiscs = 0;
 231
 232     // prepare all classes
 233     for(c = d->classes ; c ; c = c->next) {
 234         c->render = 0;
 235
 236         c->isleaf = 1;
 237         c->hasparent = 0;
 238
 239         if(unlikely(!c->updated))
 240             c->unupdated++;
 241         else {
 242             c->unupdated = 0;
 243
 244             if(c->isqdisc)
 245                 updated_qdiscs++;
 246             else
 247                 updated_classes++;
 248         }
 249     }
 250
 251     if(unlikely(!d->enabled || (!updated_classes && !updated_qdiscs))) {
 252         debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. It is not enabled/updated.", d->name?d->name:d->id);
 253         tc_device_classes_cleanup(d);
 254         return;
 255     }
 256
 257     if(unlikely(updated_classes && updated_qdiscs)) {
 258         error("TC: device '%s' has active both classes (%d) and qdiscs (%d). Will render only qdiscs.", d->id, updated_classes, updated_qdiscs);
 259         for(c = d->classes ; c ; c = c->next)
 260             if(unlikely(!c->isqdisc && c->updated))
 261                 c->updated = 0;
 262
 263         updated_classes = 0;
 264     }
 265
 266     // mark the classes as leafs and parents
 267     for(c = d->classes; c; c = c->next) {
 268         if(unlikely(!c->updated)) continue;
 269
 270         //debug(D_TC_LOOP, "TC: In device '%s', %s '%s'  has leafid: '%s' and parentid '%s'.",
 271         //    d->id,
 272         //    c->isqdisc?"qdisc":"class",
 273         //    c->id,
 274         //    c->leafid?c->leafid:"NULL",
 275         //    c->parentid?c->parentid:"NULL");
 276
 277         // find if c is leaf or not
 278         for(x = d->classes; x; x = x->next) {
 279             if(unlikely(!x->updated || c == x || !x->parentid)) continue;
 280
 281             if( (c->hash == x->parent_hash && strcmp(c->id, x->parentid) == 0) ||
 282                 (c->leafid && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0)) {
 283                 // debug(D_TC_LOOP, "TC: In device '%s', %s '%s' (leafid: '%s') has as leaf %s '%s' (parentid: '%s').", d->name?d->name:d->id, c->isqdisc?"qdisc":"class", c->name?c->name:c->id, c->leafid?c->leafid:c->id, x->isqdisc?"qdisc":"class", x->name?x->name:x->id, x->parentid?x->parentid:x->id);
 284                 c->isleaf = 0;
 285                 x->hasparent = 1;
 286             }
 287         }
 288     }
 289
 290     // debugging only
 291     /*
 292     if(unlikely(debug_flags & D_TC_LOOP)) {
 293         for(c = d->classes ; c ; c = c->next) {
 294             if((c->isleaf && c->hasparent) || d->enabled_all_classes_qdiscs) debug(D_TC_LOOP, "TC: final nodes dump for '%s': class %s, OK", d->name, c->id);
 295             else debug(D_TC_LOOP, "TC: final nodes dump for '%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)");
 296         }
 297     }
 298     */
 299
 300     for(c = d->classes ; c ; c = c->next) {
 301         if(unlikely(!c->updated)) continue;
 302
 303         // debug(D_TC_LOOP, "TC: device '%s', %s '%s' isleaf=%d, hasparent=%d", d->id, (c->isqdisc)?"qdisc":"class", c->id, c->isleaf, c->hasparent);
 304
 305         if(unlikely((c->isleaf && c->hasparent) || d->enabled_all_classes_qdiscs)) {
 306             c->render = 1;
 307             active_nodes++;
 308             bytes_sum += c->bytes;
 309             packets_sum += c->packets;
 310             dropped_sum += c->dropped;
 311             tokens_sum += c->tokens;
 312             ctokens_sum += c->ctokens;
 313         }
 314
 315         //if(unlikely(!c->hasparent)) {
 316         //    if(root) error("TC: multiple root class/qdisc for device '%s' (old: '%s', new: '%s')", d->id, root->id, c->id);
 317         //    root = c;
 318         //    debug(D_TC_LOOP, "TC: found root class/qdisc '%s'", root->id);
 319         //}
 320     }
 321
 322     if(unlikely(!active_nodes)) {
 323         debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No useful classes/qdiscs.", d->name?d->name:d->id);
 324         tc_device_classes_cleanup(d);
 325         return;
 326     }
 327
 328     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, all_classes_qdiscs: %d/%d), classes: (bytes = %llu, packets = %llu, dropped = %llu, tokens = %llu, ctokens = %llu).",
 329         d->name?d->name:d->id,
 330         d->enabled, enable_new_interfaces,
 331         d->enabled_bytes, enable_bytes,
 332         d->enabled_packets, enable_packets,
 333         d->enabled_dropped, enable_dropped,
 334         d->enabled_tokens, enable_tokens,
 335         d->enabled_ctokens, enable_ctokens,
 336         d->enabled_all_classes_qdiscs, enabled_all_classes_qdiscs,
 337         bytes_sum,
 338         packets_sum,
 339         dropped_sum,
 340         tokens_sum,
 341         ctokens_sum
 342         );
 343
 344     // --------------------------------------------------------------------
 345     // bytes
 346
 347     if(d->enabled_bytes == CONFIG_ONDEMAND_YES || (d->enabled_bytes == CONFIG_ONDEMAND_ONDEMAND && bytes_sum)) {
 348         d->enabled_bytes = CONFIG_ONDEMAND_YES;
 349
 350         if(unlikely(!d->st_bytes))
 351             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, d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED);
 352
 353         else {
 354             rrdset_next(d->st_bytes);
 355             if(unlikely(d->name_updated)) rrdset_set_name(d->st_bytes, d->name);
 356
 357             // FIXME
 358             // update the family
 359         }
 360
 361         for(c = d->classes ; c ; c = c->next) {
 362             if(unlikely(!c->render)) continue;
 363
 364             if(unlikely(!c->rd_bytes))
 365                 c->rd_bytes = rrddim_add(d->st_bytes, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 366             else if(unlikely(c->name_updated))
 367                 rrddim_set_name(d->st_bytes, c->rd_bytes, c->name);
 368
 369             rrddim_set_by_pointer(d->st_bytes, c->rd_bytes, c->bytes);
 370         }
 371         rrdset_done(d->st_bytes);
 372     }
 373
 374     // --------------------------------------------------------------------
 375     // packets
 376
 377     if(d->enabled_packets == CONFIG_ONDEMAND_YES || (d->enabled_packets == CONFIG_ONDEMAND_ONDEMAND && packets_sum)) {
 378         d->enabled_packets = CONFIG_ONDEMAND_YES;
 379
 380         if(unlikely(!d->st_packets)) {
 381             char id[RRD_ID_LENGTH_MAX + 1];
 382             char name[RRD_ID_LENGTH_MAX + 1];
 383             snprintfz(id, RRD_ID_LENGTH_MAX, "%s_packets", d->id);
 384             snprintfz(name, RRD_ID_LENGTH_MAX, "%s_packets", d->name?d->name:d->id);
 385
 386             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, d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED);
 387         }
 388         else {
 389             rrdset_next(d->st_packets);
 390
 391             if(unlikely(d->name_updated)) {
 392                 char name[RRD_ID_LENGTH_MAX + 1];
 393                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_packets", d->name?d->name:d->id);
 394                 rrdset_set_name(d->st_packets, name);
 395             }
 396
 397             // FIXME
 398             // update the family
 399         }
 400
 401         for(c = d->classes ; c ; c = c->next) {
 402             if(unlikely(!c->render)) continue;
 403
 404             if(unlikely(!c->rd_packets))
 405                 c->rd_packets = rrddim_add(d->st_packets, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_INCREMENTAL);
 406             else if(unlikely(c->name_updated))
 407                 rrddim_set_name(d->st_packets, c->rd_packets, c->name);
 408
 409             rrddim_set_by_pointer(d->st_packets, c->rd_packets, c->packets);
 410         }
 411         rrdset_done(d->st_packets);
 412     }
 413
 414     // --------------------------------------------------------------------
 415     // dropped
 416
 417     if(d->enabled_dropped == CONFIG_ONDEMAND_YES || (d->enabled_dropped == CONFIG_ONDEMAND_ONDEMAND && dropped_sum)) {
 418         d->enabled_dropped = CONFIG_ONDEMAND_YES;
 419
 420         if(unlikely(!d->st_dropped)) {
 421             char id[RRD_ID_LENGTH_MAX + 1];
 422             char name[RRD_ID_LENGTH_MAX + 1];
 423             snprintfz(id, RRD_ID_LENGTH_MAX, "%s_dropped", d->id);
 424             snprintfz(name, RRD_ID_LENGTH_MAX, "%s_dropped", d->name?d->name:d->id);
 425
 426             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, d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED);
 427         }
 428         else {
 429             rrdset_next(d->st_dropped);
 430
 431             if(unlikely(d->name_updated)) {
 432                 char name[RRD_ID_LENGTH_MAX + 1];
 433                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_dropped", d->name?d->name:d->id);
 434                 rrdset_set_name(d->st_dropped, name);
 435             }
 436
 437             // FIXME
 438             // update the family
 439         }
 440
 441         for(c = d->classes ; c ; c = c->next) {
 442             if(unlikely(!c->render)) continue;
 443
 444             if(unlikely(!c->rd_dropped))
 445                 c->rd_dropped = rrddim_add(d->st_dropped, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_INCREMENTAL);
 446             else if(unlikely(c->name_updated))
 447                 rrddim_set_name(d->st_dropped, c->rd_dropped, c->name);
 448
 449             rrddim_set_by_pointer(d->st_dropped, c->rd_dropped, c->dropped);
 450         }
 451         rrdset_done(d->st_dropped);
 452     }
 453
 454     // --------------------------------------------------------------------
 455     // tokens
 456
 457     if(d->enabled_tokens == CONFIG_ONDEMAND_YES || (d->enabled_tokens == CONFIG_ONDEMAND_ONDEMAND && tokens_sum)) {
 458         d->enabled_tokens = CONFIG_ONDEMAND_YES;
 459
 460         if(unlikely(!d->st_tokens)) {
 461             char id[RRD_ID_LENGTH_MAX + 1];
 462             char name[RRD_ID_LENGTH_MAX + 1];
 463             snprintfz(id, RRD_ID_LENGTH_MAX, "%s_tokens", d->id);
 464             snprintfz(name, RRD_ID_LENGTH_MAX, "%s_tokens", d->name?d->name:d->id);
 465
 466             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);
 467         }
 468         else {
 469             rrdset_next(d->st_tokens);
 470
 471             if(unlikely(d->name_updated)) {
 472                 char name[RRD_ID_LENGTH_MAX + 1];
 473                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_tokens", d->name?d->name:d->id);
 474                 rrdset_set_name(d->st_tokens, name);
 475             }
 476
 477             // FIXME
 478             // update the family
 479         }
 480
 481         for(c = d->classes ; c ; c = c->next) {
 482             if(unlikely(!c->render)) continue;
 483
 484             if(unlikely(!c->rd_tokens)) {
 485                 c->rd_tokens = rrddim_add(d->st_tokens, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_ABSOLUTE);
 486             }
 487             else if(unlikely(c->name_updated))
 488                 rrddim_set_name(d->st_tokens, c->rd_tokens, c->name);
 489
 490             rrddim_set_by_pointer(d->st_tokens, c->rd_tokens, c->tokens);
 491         }
 492         rrdset_done(d->st_tokens);
 493     }
 494
 495     // --------------------------------------------------------------------
 496     // ctokens
 497
 498     if(d->enabled_ctokens == CONFIG_ONDEMAND_YES || (d->enabled_ctokens == CONFIG_ONDEMAND_ONDEMAND && ctokens_sum)) {
 499         d->enabled_ctokens = CONFIG_ONDEMAND_YES;
 500
 501         if(unlikely(!d->st_ctokens)) {
 502             char id[RRD_ID_LENGTH_MAX + 1];
 503             char name[RRD_ID_LENGTH_MAX + 1];
 504             snprintfz(id, RRD_ID_LENGTH_MAX, "%s_ctokens", d->id);
 505             snprintfz(name, RRD_ID_LENGTH_MAX, "%s_ctokens", d->name?d->name:d->id);
 506
 507             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);
 508         }
 509         else {
 510             debug(D_TC_LOOP, "TC: Updating _ctokens chart for device '%s'", d->name?d->name:d->id);
 511             rrdset_next(d->st_ctokens);
 512
 513             if(unlikely(d->name_updated)) {
 514                 char name[RRD_ID_LENGTH_MAX + 1];
 515                 snprintfz(name, RRD_ID_LENGTH_MAX, "%s_ctokens", d->name?d->name:d->id);
 516                 rrdset_set_name(d->st_ctokens, name);
 517             }
 518
 519             // FIXME
 520             // update the family
 521         }
 522
 523         for(c = d->classes ; c ; c = c->next) {
 524             if(unlikely(!c->render)) continue;
 525
 526             if(unlikely(!c->rd_ctokens))
 527                 c->rd_ctokens = rrddim_add(d->st_ctokens, c->id, c->name?c->name:c->id, 1, 1, RRDDIM_ABSOLUTE);
 528             else if(unlikely(c->name_updated))
 529                 rrddim_set_name(d->st_ctokens, c->rd_ctokens, c->name);
 530
 531             rrddim_set_by_pointer(d->st_ctokens, c->rd_ctokens, c->ctokens);
 532         }
 533         rrdset_done(d->st_ctokens);
 534     }
 535
 536     tc_device_classes_cleanup(d);
 537 }
 538
 539 static inline void tc_device_set_class_name(struct tc_device *d, char *id, char *name) {
 540     if(unlikely(!name || !*name)) return;
 541
 542     struct tc_class *c = tc_class_index_find(d, id, 0);
 543     if(likely(c)) {
 544         if(likely(c->name)) {
 545             if(!strcmp(c->name, name)) return;
 546             freez(c->name);
 547             c->name = NULL;
 548         }
 549
 550         if(likely(name && *name && strcmp(c->id, name) != 0)) {
 551             debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
 552             c->name = strdupz(name);
 553             c->name_updated = 1;
 554         }
 555     }
 556 }
 557
 558 static inline void tc_device_set_device_name(struct tc_device *d, char *name) {
 559     if(unlikely(!name || !*name)) return;
 560
 561     if(d->name) {
 562         if(!strcmp(d->name, name)) return;
 563         freez(d->name);
 564         d->name = NULL;
 565     }
 566
 567     if(likely(name && *name && strcmp(d->id, name))) {
 568         debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
 569         d->name = strdupz(name);
 570         d->name_updated = 1;
 571     }
 572 }
 573
 574 static inline void tc_device_set_device_family(struct tc_device *d, char *family) {
 575     freez(d->family);
 576     d->family = NULL;
 577
 578     if(likely(family && *family && strcmp(d->id, family) != 0)) {
 579         debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
 580         d->family = strdupz(family);
 581         d->family_updated = 1;
 582     }
 583     // no need for null termination - it is already null
 584 }
 585
 586 static inline struct tc_device *tc_device_create(char *id)
 587 {
 588     struct tc_device *d = tc_device_index_find(id, 0);
 589
 590     if(!d) {
 591         debug(D_TC_LOOP, "TC: Creating device '%s'", id);
 592
 593         d = callocz(1, sizeof(struct tc_device));
 594
 595         d->id = strdupz(id);
 596         d->hash = simple_hash(d->id);
 597         d->enabled = (char)-1;
 598
 599         avl_init(&d->classes_index, tc_class_compare);
 600         if(unlikely(tc_device_index_add(d) != d))
 601             error("plugin_tc: INTERNAL ERROR: removing device '%s' removed a different device.", d->id);
 602
 603         if(!tc_device_root) {
 604             tc_device_root = d;
 605         }
 606         else {
 607             d->next = tc_device_root;
 608             tc_device_root->prev = d;
 609             tc_device_root = d;
 610         }
 611     }
 612
 613     return(d);
 614 }
 615
 616 static inline struct tc_class *tc_class_add(struct tc_device *n, char *id, char qdisc, char *parentid, char *leafid)
 617 {
 618     struct tc_class *c = tc_class_index_find(n, id, 0);
 619
 620     if(!c) {
 621         debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
 622
 623         c = callocz(1, sizeof(struct tc_class));
 624
 625         if(n->classes) n->classes->prev = c;
 626         c->next = n->classes;
 627         n->classes = c;
 628
 629         c->id = strdupz(id);
 630         c->hash = simple_hash(c->id);
 631
 632         c->isqdisc = qdisc;
 633         if(parentid && *parentid) {
 634             c->parentid = strdupz(parentid);
 635             c->parent_hash = simple_hash(c->parentid);
 636         }
 637
 638         if(leafid && *leafid) {
 639             c->leafid = strdupz(leafid);
 640             c->leaf_hash = simple_hash(c->leafid);
 641         }
 642
 643         if(unlikely(tc_class_index_add(n, c) != c))
 644             error("plugin_tc: INTERNAL ERROR: attempt index class '%s' on device '%s': already exists", c->id, n->id);
 645     }
 646     return(c);
 647 }
 648
 649 static inline void tc_device_free(struct tc_device *n)
 650 {
 651     if(n->next) n->next->prev = n->prev;
 652     if(n->prev) n->prev->next = n->next;
 653     if(tc_device_root == n) {
 654         if(n->next) tc_device_root = n->next;
 655         else tc_device_root = n->prev;
 656     }
 657
 658     if(unlikely(tc_device_index_del(n) != n))
 659         error("plugin_tc: INTERNAL ERROR: removing device '%s' removed a different device.", n->id);
 660
 661     while(n->classes) tc_class_free(n, n->classes);
 662
 663     freez(n->id);
 664     freez(n->name);
 665     freez(n->family);
 666     freez(n);
 667 }
 668
 669 static inline void tc_device_free_all()
 670 {
 671     while(tc_device_root)
 672         tc_device_free(tc_device_root);
 673 }
 674
 675 #define MAX_WORDS 20
 676
 677 static inline int tc_space(char c) {
 678     switch(c) {
 679     case ' ':
 680     case '\t':
 681     case '\r':
 682     case '\n':
 683         return 1;
 684
 685     default:
 686         return 0;
 687     }
 688 }
 689
 690 static inline void tc_split_words(char *str, char **words, int max_words) {
 691     char *s = str;
 692     int i = 0;
 693
 694     // skip all white space
 695     while(tc_space(*s)) s++;
 696
 697     // store the first word
 698     words[i++] = s;
 699
 700     // while we have something
 701     while(*s) {
 702         // if it is a space
 703         if(unlikely(tc_space(*s))) {
 704
 705             // terminate the word
 706             *s++ = '\0';
 707
 708             // skip all white space
 709             while(tc_space(*s)) s++;
 710
 711             // if we reached the end, stop
 712             if(!*s) break;
 713
 714             // store the next word
 715             if(i < max_words) words[i++] = s;
 716             else break;
 717         }
 718         else s++;
 719     }
 720
 721     // terminate the words
 722     while(i < max_words) words[i++] = NULL;
 723 }
 724
 725 volatile pid_t tc_child_pid = 0;
 726 void *tc_main(void *ptr) {
 727     struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
 728
 729     info("TC thread created with task id %d", gettid());
 730
 731     if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 732         error("Cannot set pthread cancel type to DEFERRED.");
 733
 734     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 735         error("Cannot set pthread cancel state to ENABLE.");
 736
 737     struct rusage thread;
 738     RRDSET *stcpu = NULL, *sttime = NULL;
 739
 740     char buffer[TC_LINE_MAX+1] = "";
 741     char *words[MAX_WORDS] = { NULL };
 742
 743     uint32_t BEGIN_HASH = simple_hash("BEGIN");
 744     uint32_t END_HASH = simple_hash("END");
 745     uint32_t QDISC_HASH = simple_hash("qdisc");
 746     uint32_t CLASS_HASH = simple_hash("class");
 747     uint32_t SENT_HASH = simple_hash("Sent");
 748     uint32_t LENDED_HASH = simple_hash("lended:");
 749     uint32_t TOKENS_HASH = simple_hash("tokens:");
 750     uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
 751     uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
 752     uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
 753     uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
 754 #ifdef DETACH_PLUGINS_FROM_NETDATA
 755     uint32_t MYPID_HASH = simple_hash("MYPID");
 756 #endif
 757     uint32_t first_hash;
 758
 759     snprintfz(buffer, TC_LINE_MAX, "%s/tc-qos-helper.sh", config_get("plugins", "plugins directory", PLUGINS_DIR));
 760     char *tc_script = config_get("plugin:tc", "script to run to get tc values", buffer);
 761
 762     for(;1;) {
 763         if(unlikely(netdata_exit)) break;
 764
 765         FILE *fp;
 766         struct tc_device *device = NULL;
 767         struct tc_class *class = NULL;
 768
 769         snprintfz(buffer, TC_LINE_MAX, "exec %s %d", tc_script, rrd_update_every);
 770         debug(D_TC_LOOP, "executing '%s'", buffer);
 771
 772         fp = mypopen(buffer, (pid_t *)&tc_child_pid);
 773         if(unlikely(!fp)) {
 774             error("TC: Cannot popen(\"%s\", \"r\").", buffer);
 775             goto cleanup;
 776         }
 777
 778         while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
 779             if(unlikely(netdata_exit)) break;
 780
 781             buffer[TC_LINE_MAX] = '\0';
 782             // debug(D_TC_LOOP, "TC: read '%s'", buffer);
 783
 784             tc_split_words(buffer, words, MAX_WORDS);
 785
 786             if(unlikely(!words[0] || !*words[0])) {
 787                 // debug(D_TC_LOOP, "empty line");
 788                 continue;
 789             }
 790             // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
 791
 792             first_hash = simple_hash(words[0]);
 793
 794             if(unlikely(device && ((first_hash == CLASS_HASH && strcmp(words[0], "class") == 0) ||  (first_hash == QDISC_HASH && strcmp(words[0], "qdisc") == 0)))) {
 795                 // 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]);
 796
 797                 char *type     = words[1];  // the class/qdisc type: htb, fq_codel, etc
 798                 char *id       = words[2];  // the class/qdisc major:minor
 799                 char *parent   = words[3];  // the word 'parent' or 'root'
 800                 char *parentid = words[4];  // parentid
 801                 char *leaf     = words[5];  // the word 'leaf'
 802                 char *leafid   = words[6];  // leafid
 803
 804                 int parent_is_root = 0;
 805                 int parent_is_parent = 0;
 806                 if(likely(parent)) {
 807                     parent_is_parent = !strcmp(parent, "parent");
 808
 809                     if(!parent_is_parent)
 810                         parent_is_root = !strcmp(parent, "root");
 811                 }
 812
 813                 if(likely(type && id && (parent_is_root || parent_is_parent))) {
 814                     char qdisc = 0;
 815
 816                     if(first_hash == QDISC_HASH) {
 817                         qdisc = 1;
 818
 819                         if(!strcmp(type, "ingress")) {
 820                             // we don't want to get the ingress qdisc
 821                             // there should be an IFB interface for this
 822
 823                             class = NULL;
 824                             continue;
 825                         }
 826
 827                         if(parent_is_parent && parentid) {
 828                             // eliminate the minor number from parentid
 829                             char *s = parentid;
 830                             while(*s && *s != ':') s++;
 831                             if(*s == ':') s[1] = '\0';
 832                         }
 833                     }
 834
 835                     if(parent_is_root) {
 836                         parentid = NULL;
 837                         leafid = NULL;
 838                     }
 839                     else if(!leaf || strcmp(leaf, "leaf") != 0)
 840                         leafid = NULL;
 841
 842                     char leafbuf[20 + 1] = "";
 843                     if(leafid && leafid[strlen(leafid) - 1] == ':') {
 844                         strncpyz(leafbuf, leafid, 20 - 1);
 845                         strcat(leafbuf, "1");
 846                         leafid = leafbuf;
 847                     }
 848
 849                     class = tc_class_add(device, id, qdisc, parentid, leafid);
 850                 }
 851                 else {
 852                     // clear the last class
 853                     class = NULL;
 854                 }
 855             }
 856             else if(unlikely(first_hash == END_HASH && strcmp(words[0], "END") == 0)) {
 857                 // debug(D_TC_LOOP, "END line");
 858
 859                 if(likely(device)) {
 860                     if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0)
 861                         error("Cannot set pthread cancel state to DISABLE.");
 862
 863                     tc_device_commit(device);
 864                     // tc_device_free(device);
 865
 866                     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 867                         error("Cannot set pthread cancel state to ENABLE.");
 868                 }
 869
 870                 device = NULL;
 871                 class = NULL;
 872             }
 873             else if(unlikely(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0)) {
 874                 // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
 875
 876                 if(likely(words[1] && *words[1])) {
 877                     device = tc_device_create(words[1]);
 878                 }
 879                 else {
 880                     // tc_device_free(device);
 881                     device = NULL;
 882                 }
 883
 884                 class = NULL;
 885             }
 886             else if(unlikely(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0)) {
 887                 // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
 888                 if(likely(words[1] && *words[1])) {
 889                     class->bytes = str2ull(words[1]);
 890                     class->updated = 1;
 891                 }
 892                 else {
 893                     class->updated = 0;
 894                 }
 895
 896                 if(likely(words[3] && *words[3]))
 897                     class->packets = str2ull(words[3]);
 898
 899                 if(likely(words[6] && *words[6]))
 900                     class->dropped = str2ull(words[6]);
 901
 902                 if(likely(words[8] && *words[8]))
 903                     class->overlimits = str2ull(words[8]);
 904
 905                 if(likely(words[10] && *words[10]))
 906                     class->requeues = str2ull(words[8]);
 907             }
 908             else if(unlikely(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0)) {
 909                 // debug(D_TC_LOOP, "LENDED line '%s'", words[1]);
 910                 if(likely(words[1] && *words[1]))
 911                     class->lended = str2ull(words[1]);
 912
 913                 if(likely(words[3] && *words[3]))
 914                     class->borrowed = str2ull(words[3]);
 915
 916                 if(likely(words[5] && *words[5]))
 917                     class->giants = str2ull(words[5]);
 918             }
 919             else if(unlikely(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0)) {
 920                 // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]);
 921                 if(likely(words[1] && *words[1]))
 922                     class->tokens = str2ull(words[1]);
 923
 924                 if(likely(words[3] && *words[3]))
 925                     class->ctokens = str2ull(words[3]);
 926             }
 927             else if(unlikely(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0)) {
 928                 // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
 929                 if(likely(words[1] && *words[1]))
 930                     tc_device_set_device_name(device, words[1]);
 931             }
 932             else if(unlikely(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0)) {
 933                 // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
 934                 if(likely(words[1] && *words[1]))
 935                     tc_device_set_device_family(device, words[1]);
 936             }
 937             else if(unlikely(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0)) {
 938                 // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
 939                 char *id    = words[1];
 940                 char *path  = words[2];
 941                 if(likely(id && *id && path && *path))
 942                     tc_device_set_class_name(device, id, path);
 943             }
 944             else if(unlikely(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0)) {
 945                 // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
 946                 getrusage(RUSAGE_THREAD, &thread);
 947
 948                 if(unlikely(!stcpu)) stcpu = rrdset_find("netdata.plugin_tc_cpu");
 949                 if(unlikely(!stcpu)) {
 950                     stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "tc.helper", NULL, "NetData TC CPU usage", "milliseconds/s", 135000, rrd_update_every, RRDSET_TYPE_STACKED);
 951                     rrddim_add(stcpu, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
 952                     rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
 953                 }
 954                 else rrdset_next(stcpu);
 955
 956                 rrddim_set(stcpu, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
 957                 rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
 958                 rrdset_done(stcpu);
 959
 960                 if(unlikely(!sttime)) stcpu = rrdset_find("netdata.plugin_tc_time");
 961                 if(unlikely(!sttime)) {
 962                     sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "tc.helper", NULL, "NetData TC script execution", "milliseconds/run", 135001, rrd_update_every, RRDSET_TYPE_AREA);
 963                     rrddim_add(sttime, "run_time",  "run time",  1, 1, RRDDIM_ABSOLUTE);
 964                 }
 965                 else rrdset_next(sttime);
 966
 967                 rrddim_set(sttime, "run_time", atoll(words[1]));
 968                 rrdset_done(sttime);
 969
 970             }
 971 #ifdef DETACH_PLUGINS_FROM_NETDATA
 972             else if(unlikely(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0))) {
 973                 // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
 974                 char *id = words[1];
 975                 pid_t pid = atol(id);
 976
 977                 if(likely(pid)) tc_child_pid = pid;
 978
 979                 debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
 980             }
 981 #endif
 982             //else {
 983             //  debug(D_TC_LOOP, "IGNORED line");
 984             //}
 985         }
 986
 987         // fgets() failed or loop broke
 988         int code = mypclose(fp, (pid_t)tc_child_pid);
 989         tc_child_pid = 0;
 990
 991         if(unlikely(device)) {
 992             // tc_device_free(device);
 993             device = NULL;
 994             class = NULL;
 995         }
 996
 997         if(unlikely(netdata_exit)) {
 998             tc_device_free_all();
 999             goto cleanup;
1000         }
1001
1002         if(code == 1 || code == 127) {
1003             // 1 = DISABLE
1004             // 127 = cannot even run it
1005             error("TC: tc-qos-helper.sh exited with code %d. Disabling it.", code);
1006
1007             tc_device_free_all();
1008             goto cleanup;
1009         }
1010
1011         sleep((unsigned int) rrd_update_every);
1012     }
1013
1014 cleanup:
1015     info("TC thread exiting");
1016
1017     static_thread->enabled = 0;
1018     pthread_exit(NULL);
1019     return NULL;
1020 }