Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 1164 deletions

diff --git a/src/plugin_tc.c b/src/plugin_tc.c
deleted file mode 100644
index 4b6d84e11..000000000
--- a/src/plugin_tc.c
+++ /dev/null
@@ -1,1164 +0,0 @@
-#include "common.h"
-
-#define RRD_TYPE_TC "tc"
-
-// ----------------------------------------------------------------------------
-// /sbin/tc processor
-// this requires the script plugins.d/tc-qos-helper.sh
-
-#define TC_LINE_MAX 1024
-
-struct tc_class {
-    avl avl;
-
-    char *id;
-    uint32_t hash;
-
-    char *name;
-
-    char *leafid;
-    uint32_t leaf_hash;
-
-    char *parentid;
-    uint32_t parent_hash;
-
-    char hasparent;
-    char isleaf;
-    char isqdisc;
-    char render;
-
-    unsigned long long bytes;
-    unsigned long long packets;
-    unsigned long long dropped;
-    unsigned long long overlimits;
-    unsigned long long requeues;
-    unsigned long long lended;
-    unsigned long long borrowed;
-    unsigned long long giants;
-    unsigned long long tokens;
-    unsigned long long ctokens;
-
-    RRDDIM *rd_bytes;
-    RRDDIM *rd_packets;
-    RRDDIM *rd_dropped;
-    RRDDIM *rd_tokens;
-    RRDDIM *rd_ctokens;
-
-    char name_updated;
-    char updated;   // updated bytes
-    int  unupdated; // the number of times, this has been found un-updated
-
-    struct tc_class *next;
-    struct tc_class *prev;
-};
-
-struct tc_device {
-    avl avl;
-
-    char *id;
-    uint32_t hash;
-
-    char *name;
-    char *family;
-
-    char name_updated;
-    char family_updated;
-
-    char enabled;
-    char enabled_bytes;
-    char enabled_packets;
-    char enabled_dropped;
-    char enabled_tokens;
-    char enabled_ctokens;
-    char enabled_all_classes_qdiscs;
-
-    RRDSET *st_bytes;
-    RRDSET *st_packets;
-    RRDSET *st_dropped;
-    RRDSET *st_tokens;
-    RRDSET *st_ctokens;
-
-    avl_tree classes_index;
-
-    struct tc_class *classes;
-    struct tc_class *last_class;
-
-    struct tc_device *next;
-    struct tc_device *prev;
-};
-
-
-struct tc_device *tc_device_root = NULL;
-
-// ----------------------------------------------------------------------------
-// tc_device index
-
-static int tc_device_compare(void* a, void* b) {
-    if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
-    else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
-    else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
-}
-
-avl_tree tc_device_root_index = {
-        NULL,
-        tc_device_compare
-};
-
-#define tc_device_index_add(st) (struct tc_device *)avl_insert(&tc_device_root_index, (avl *)(st))
-#define tc_device_index_del(st) (struct tc_device *)avl_remove(&tc_device_root_index, (avl *)(st))
-
-static inline struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
-    struct tc_device tmp;
-    tmp.id = (char *)id;
-    tmp.hash = (hash)?hash:simple_hash(tmp.id);
-
-    return (struct tc_device *)avl_search(&(tc_device_root_index), (avl *)&tmp);
-}
-
-
-// ----------------------------------------------------------------------------
-// tc_class index
-
-static int tc_class_compare(void* a, void* b) {
-    if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
-    else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
-    else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
-}
-
-#define tc_class_index_add(st, rd) (struct tc_class *)avl_insert(&((st)->classes_index), (avl *)(rd))
-#define tc_class_index_del(st, rd) (struct tc_class *)avl_remove(&((st)->classes_index), (avl *)(rd))
-
-static inline struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
-    struct tc_class tmp;
-    tmp.id = (char *)id;
-    tmp.hash = (hash)?hash:simple_hash(tmp.id);
-
-    return (struct tc_class *)avl_search(&(st->classes_index), (avl *) &tmp);
-}
-
-// ----------------------------------------------------------------------------
-
-static inline void tc_class_free(struct tc_device *n, struct tc_class *c) {
-    if(c == n->classes) {
-        if(likely(c->next))
-            n->classes = c->next;
-        else
-            n->classes = c->prev;
-    }
-
-    if(c == n->last_class) {
-        if(unlikely(c->next))
-            n->last_class = c->next;
-        else
-            n->last_class = c->prev;
-    }
-
-    if(c->next) c->next->prev = c->prev;
-    if(c->prev) c->prev->next = c->next;
-
-    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);
-
-    if(unlikely(tc_class_index_del(n, c) != c))
-        error("plugin_tc: INTERNAL ERROR: attempt remove class '%s' from device '%s': removed a different calls", c->id, n->id);
-
-    freez(c->id);
-    freez(c->name);
-    freez(c->leafid);
-    freez(c->parentid);
-    freez(c);
-}
-
-static inline void tc_device_classes_cleanup(struct tc_device *d) {
-    static int cleanup_every = 999;
-
-    if(unlikely(cleanup_every > 0)) {
-        cleanup_every = (int) config_get_number("plugin:tc", "cleanup unused classes every", 120);
-        if(cleanup_every < 0) cleanup_every = -cleanup_every;
-    }
-
-    d->name_updated = 0;
-    d->family_updated = 0;
-
-    struct tc_class *c = d->classes;
-    while(c) {
-        if(unlikely(cleanup_every && c->unupdated >= cleanup_every)) {
-            struct tc_class *nc = c->next;
-            tc_class_free(d, c);
-            c = nc;
-        }
-        else {
-            c->updated = 0;
-            c->name_updated = 0;
-
-            c = c->next;
-        }
-    }
-}
-
-static inline void tc_device_commit(struct tc_device *d) {
-    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;
-
-    if(unlikely(enable_new_interfaces == -1)) {
-        enable_new_interfaces      = config_get_boolean_ondemand("plugin:tc", "enable new interfaces detected at runtime", CONFIG_BOOLEAN_YES);
-        enable_bytes               = config_get_boolean_ondemand("plugin:tc", "enable traffic charts for all interfaces", CONFIG_BOOLEAN_AUTO);
-        enable_packets             = config_get_boolean_ondemand("plugin:tc", "enable packets charts for all interfaces", CONFIG_BOOLEAN_AUTO);
-        enable_dropped             = config_get_boolean_ondemand("plugin:tc", "enable dropped charts for all interfaces", CONFIG_BOOLEAN_AUTO);
-        enable_tokens              = config_get_boolean_ondemand("plugin:tc", "enable tokens charts for all interfaces", CONFIG_BOOLEAN_NO);
-        enable_ctokens             = config_get_boolean_ondemand("plugin:tc", "enable ctokens charts for all interfaces", CONFIG_BOOLEAN_NO);
-        enabled_all_classes_qdiscs = config_get_boolean_ondemand("plugin:tc", "enable show all classes and qdiscs for all interfaces", CONFIG_BOOLEAN_NO);
-    }
-
-    if(unlikely(d->enabled == (char)-1)) {
-        char var_name[CONFIG_MAX_NAME + 1];
-        snprintfz(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
-
-        d->enabled                    = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_new_interfaces);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "traffic chart for %s", d->id);
-        d->enabled_bytes              = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_bytes);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "packets chart for %s", d->id);
-        d->enabled_packets            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_packets);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "dropped packets chart for %s", d->id);
-        d->enabled_dropped            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_dropped);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "tokens chart for %s", d->id);
-        d->enabled_tokens             = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_tokens);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "ctokens chart for %s", d->id);
-        d->enabled_ctokens            = (char)config_get_boolean_ondemand("plugin:tc", var_name, enable_ctokens);
-
-        snprintfz(var_name, CONFIG_MAX_NAME, "show all classes for %s", d->id);
-        d->enabled_all_classes_qdiscs = (char)config_get_boolean_ondemand("plugin:tc", var_name, enabled_all_classes_qdiscs);
-    }
-
-    // we only need to add leaf classes
-    struct tc_class *c, *x /*, *root = NULL */;
-    unsigned long long bytes_sum = 0, packets_sum = 0, dropped_sum = 0, tokens_sum = 0, ctokens_sum = 0;
-    int active_nodes = 0, updated_classes = 0, updated_qdiscs = 0;
-
-    // prepare all classes
-    // we set reasonable defaults for the rest of the code below
-
-    for(c = d->classes ; c ; c = c->next) {
-        c->render = 0;          // do not render this class
-
-        c->isleaf = 1;          // this is a leaf class
-        c->hasparent = 0;       // without a parent
-
-        if(unlikely(!c->updated))
-            c->unupdated++;     // increase its unupdated counter
-        else {
-            c->unupdated = 0;   // reset its unupdated counter
-
-            // count how many of each kind
-            if(c->isqdisc)
-                updated_qdiscs++;
-            else
-                updated_classes++;
-        }
-    }
-
-    if(unlikely(!d->enabled || (!updated_classes && !updated_qdiscs))) {
-        debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. It is not enabled/updated.", d->name?d->name:d->id);
-        tc_device_classes_cleanup(d);
-        return;
-    }
-
-    if(unlikely(updated_classes && updated_qdiscs)) {
-        error("TC: device '%s' has active both classes (%d) and qdiscs (%d). Will render only qdiscs.", d->id, updated_classes, updated_qdiscs);
-
-        // set all classes to !updated
-        for(c = d->classes ; c ; c = c->next)
-            if(unlikely(!c->isqdisc && c->updated))
-                c->updated = 0;
-
-        updated_classes = 0;
-    }
-
-    // mark the classes as leafs and parents
-    //
-    // TC is hierarchical:
-    //  - classes can have other classes in them
-    //  - the same is true for qdiscs (i.e. qdiscs have classes, that have other qdiscs)
-    //
-    // we need to present a chart with leaf nodes only, so that the sum
-    // of all dimensions of the chart, will be the total utilization
-    // of the interface.
-    //
-    // here we try to find the ones we need to report
-    // by default all nodes are marked with: isleaf = 1 (see above)
-    //
-    // so, here we remove the isleaf flag from nodes in the middle
-    // and we add the hasparent flag to leaf nodes we found their parent
-    if(likely(!d->enabled_all_classes_qdiscs)) {
-        for(c = d->classes; c; c = c->next) {
-            if(unlikely(!c->updated)) continue;
-
-            //debug(D_TC_LOOP, "TC: In device '%s', %s '%s'  has leafid: '%s' and parentid '%s'.",
-            //    d->id,
-            //    c->isqdisc?"qdisc":"class",
-            //    c->id,
-            //    c->leafid?c->leafid:"NULL",
-            //    c->parentid?c->parentid:"NULL");
-
-            // find if c is leaf or not
-            for(x = d->classes; x; x = x->next) {
-                if(unlikely(!x->updated || c == x || !x->parentid)) continue;
-
-                // classes have both parentid and leafid
-                // qdiscs have only parentid
-                // the following works for both (it is an OR)
-
-                if((c->hash == x->parent_hash && strcmp(c->id, x->parentid) == 0) ||
-                   (c->leafid && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0)) {
-                    // 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);
-                    c->isleaf = 0;
-                    x->hasparent = 1;
-                }
-            }
-        }
-    }
-
-    for(c = d->classes ; c ; c = c->next) {
-        if(unlikely(!c->updated)) continue;
-
-        // 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);
-
-        if(unlikely((c->isleaf && c->hasparent) || d->enabled_all_classes_qdiscs)) {
-            c->render = 1;
-            active_nodes++;
-            bytes_sum += c->bytes;
-            packets_sum += c->packets;
-            dropped_sum += c->dropped;
-            tokens_sum += c->tokens;
-            ctokens_sum += c->ctokens;
-        }
-
-        //if(unlikely(!c->hasparent)) {
-        //    if(root) error("TC: multiple root class/qdisc for device '%s' (old: '%s', new: '%s')", d->id, root->id, c->id);
-        //    root = c;
-        //    debug(D_TC_LOOP, "TC: found root class/qdisc '%s'", root->id);
-        //}
-    }
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    // dump all the list to see what we know
-
-    if(unlikely(debug_flags & D_TC_LOOP)) {
-        for(c = d->classes ; c ; c = c->next) {
-            if(c->render) debug(D_TC_LOOP, "TC: final nodes dump for '%s': class %s, OK", d->name, c->id);
-            else debug(D_TC_LOOP, "TC: final nodes dump for '%s': class %s, IGNORE (updated: %d, isleaf: %d, hasparent: %d, parent: %s)", d->name?d->name:d->id, c->id, c->updated, c->isleaf, c->hasparent, c->parentid?c->parentid:"(unset)");
-        }
-    }
-#endif
-
-    if(unlikely(!active_nodes)) {
-        debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No useful classes/qdiscs.", d->name?d->name:d->id);
-        tc_device_classes_cleanup(d);
-        return;
-    }
-
-    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).",
-        d->name?d->name:d->id,
-        d->enabled, enable_new_interfaces,
-        d->enabled_bytes, enable_bytes,
-        d->enabled_packets, enable_packets,
-        d->enabled_dropped, enable_dropped,
-        d->enabled_tokens, enable_tokens,
-        d->enabled_ctokens, enable_ctokens,
-        d->enabled_all_classes_qdiscs, enabled_all_classes_qdiscs,
-        bytes_sum,
-        packets_sum,
-        dropped_sum,
-        tokens_sum,
-        ctokens_sum
-        );
-
-    // --------------------------------------------------------------------
-    // bytes
-
-    if(d->enabled_bytes == CONFIG_BOOLEAN_YES || (d->enabled_bytes == CONFIG_BOOLEAN_AUTO && bytes_sum)) {
-        d->enabled_bytes = CONFIG_BOOLEAN_YES;
-
-        if(unlikely(!d->st_bytes))
-            d->st_bytes = rrdset_create_localhost(
-                    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"
-                    , "tc"
-                    , NULL
-                    , 7000
-                    , localhost->rrd_update_every
-                    , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
-            );
-
-        else {
-            rrdset_next(d->st_bytes);
-            if(unlikely(d->name_updated)) rrdset_set_name(d->st_bytes, d->name);
-
-            // FIXME
-            // update the family
-        }
-
-        for(c = d->classes ; c ; c = c->next) {
-            if(unlikely(!c->render)) continue;
-
-            if(unlikely(!c->rd_bytes))
-                c->rd_bytes = rrddim_add(d->st_bytes, c->id, c->name?c->name:c->id, 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
-            else if(unlikely(c->name_updated))
-                rrddim_set_name(d->st_bytes, c->rd_bytes, c->name);
-
-            rrddim_set_by_pointer(d->st_bytes, c->rd_bytes, c->bytes);
-        }
-        rrdset_done(d->st_bytes);
-    }
-
-    // --------------------------------------------------------------------
-    // packets
-
-    if(d->enabled_packets == CONFIG_BOOLEAN_YES || (d->enabled_packets == CONFIG_BOOLEAN_AUTO && packets_sum)) {
-        d->enabled_packets = CONFIG_BOOLEAN_YES;
-
-        if(unlikely(!d->st_packets)) {
-            char id[RRD_ID_LENGTH_MAX + 1];
-            char name[RRD_ID_LENGTH_MAX + 1];
-            snprintfz(id, RRD_ID_LENGTH_MAX, "%s_packets", d->id);
-            snprintfz(name, RRD_ID_LENGTH_MAX, "%s_packets", d->name?d->name:d->id);
-
-            d->st_packets = rrdset_create_localhost(
-                    RRD_TYPE_TC
-                    , id
-                    , name
-                    , d->family ? d->family : d->id
-                    , RRD_TYPE_TC ".qos_packets"
-                    , "Class Packets"
-                    , "packets/s"
-                    , "tc"
-                    , NULL
-                    , 7010
-                    , localhost->rrd_update_every
-                    , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
-            );
-        }
-        else {
-            rrdset_next(d->st_packets);
-
-            if(unlikely(d->name_updated)) {
-                char name[RRD_ID_LENGTH_MAX + 1];
-                snprintfz(name, RRD_ID_LENGTH_MAX, "%s_packets", d->name?d->name:d->id);
-                rrdset_set_name(d->st_packets, name);
-            }
-
-            // FIXME
-            // update the family
-        }
-
-        for(c = d->classes ; c ; c = c->next) {
-            if(unlikely(!c->render)) continue;
-
-            if(unlikely(!c->rd_packets))
-                c->rd_packets = rrddim_add(d->st_packets, c->id, c->name?c->name:c->id, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-            else if(unlikely(c->name_updated))
-                rrddim_set_name(d->st_packets, c->rd_packets, c->name);
-
-            rrddim_set_by_pointer(d->st_packets, c->rd_packets, c->packets);
-        }
-        rrdset_done(d->st_packets);
-    }
-
-    // --------------------------------------------------------------------
-    // dropped
-
-    if(d->enabled_dropped == CONFIG_BOOLEAN_YES || (d->enabled_dropped == CONFIG_BOOLEAN_AUTO && dropped_sum)) {
-        d->enabled_dropped = CONFIG_BOOLEAN_YES;
-
-        if(unlikely(!d->st_dropped)) {
-            char id[RRD_ID_LENGTH_MAX + 1];
-            char name[RRD_ID_LENGTH_MAX + 1];
-            snprintfz(id, RRD_ID_LENGTH_MAX, "%s_dropped", d->id);
-            snprintfz(name, RRD_ID_LENGTH_MAX, "%s_dropped", d->name?d->name:d->id);
-
-            d->st_dropped = rrdset_create_localhost(
-                    RRD_TYPE_TC
-                    , id
-                    , name
-                    , d->family ? d->family : d->id
-                    , RRD_TYPE_TC ".qos_dropped"
-                    , "Class Dropped Packets"
-                    , "packets/s"
-                    , "tc"
-                    , NULL
-                    , 7020
-                    , localhost->rrd_update_every
-                    , d->enabled_all_classes_qdiscs ? RRDSET_TYPE_LINE : RRDSET_TYPE_STACKED
-            );
-        }
-        else {
-            rrdset_next(d->st_dropped);
-
-            if(unlikely(d->name_updated)) {
-                char name[RRD_ID_LENGTH_MAX + 1];
-                snprintfz(name, RRD_ID_LENGTH_MAX, "%s_dropped", d->name?d->name:d->id);
-                rrdset_set_name(d->st_dropped, name);
-            }
-
-            // FIXME
-            // update the family
-        }
-
-        for(c = d->classes ; c ; c = c->next) {
-            if(unlikely(!c->render)) continue;
-
-            if(unlikely(!c->rd_dropped))
-                c->rd_dropped = rrddim_add(d->st_dropped, c->id, c->name?c->name:c->id, 1, 1, RRD_ALGORITHM_INCREMENTAL);
-            else if(unlikely(c->name_updated))
-                rrddim_set_name(d->st_dropped, c->rd_dropped, c->name);
-
-            rrddim_set_by_pointer(d->st_dropped, c->rd_dropped, c->dropped);
-        }
-        rrdset_done(d->st_dropped);
-    }
-
-    // --------------------------------------------------------------------
-    // tokens
-
-    if(d->enabled_tokens == CONFIG_BOOLEAN_YES || (d->enabled_tokens == CONFIG_BOOLEAN_AUTO && tokens_sum)) {
-        d->enabled_tokens = CONFIG_BOOLEAN_YES;
-
-        if(unlikely(!d->st_tokens)) {
-            char id[RRD_ID_LENGTH_MAX + 1];
-            char name[RRD_ID_LENGTH_MAX + 1];
-            snprintfz(id, RRD_ID_LENGTH_MAX, "%s_tokens", d->id);
-            snprintfz(name, RRD_ID_LENGTH_MAX, "%s_tokens", d->name?d->name:d->id);
-
-            d->st_tokens = rrdset_create_localhost(
-                    RRD_TYPE_TC
-                    , id
-                    , name
-                    , d->family ? d->family : d->id
-                    , RRD_TYPE_TC ".qos_tokens"
-                    , "Class Tokens"
-                    , "tokens"
-                    , "tc"
-                    , NULL
-                    , 7030
-                    , localhost->rrd_update_every
-                    , RRDSET_TYPE_LINE
-            );
-        }
-        else {
-            rrdset_next(d->st_tokens);
-
-            if(unlikely(d->name_updated)) {
-                char name[RRD_ID_LENGTH_MAX + 1];
-                snprintfz(name, RRD_ID_LENGTH_MAX, "%s_tokens", d->name?d->name:d->id);
-                rrdset_set_name(d->st_tokens, name);
-            }
-
-            // FIXME
-            // update the family
-        }
-
-        for(c = d->classes ; c ; c = c->next) {
-            if(unlikely(!c->render)) continue;
-
-            if(unlikely(!c->rd_tokens)) {
-                c->rd_tokens = rrddim_add(d->st_tokens, c->id, c->name?c->name:c->id, 1, 1, RRD_ALGORITHM_ABSOLUTE);
-            }
-            else if(unlikely(c->name_updated))
-                rrddim_set_name(d->st_tokens, c->rd_tokens, c->name);
-
-            rrddim_set_by_pointer(d->st_tokens, c->rd_tokens, c->tokens);
-        }
-        rrdset_done(d->st_tokens);
-    }
-
-    // --------------------------------------------------------------------
-    // ctokens
-
-    if(d->enabled_ctokens == CONFIG_BOOLEAN_YES || (d->enabled_ctokens == CONFIG_BOOLEAN_AUTO && ctokens_sum)) {
-        d->enabled_ctokens = CONFIG_BOOLEAN_YES;
-
-        if(unlikely(!d->st_ctokens)) {
-            char id[RRD_ID_LENGTH_MAX + 1];
-            char name[RRD_ID_LENGTH_MAX + 1];
-            snprintfz(id, RRD_ID_LENGTH_MAX, "%s_ctokens", d->id);
-            snprintfz(name, RRD_ID_LENGTH_MAX, "%s_ctokens", d->name?d->name:d->id);
-
-            d->st_ctokens = rrdset_create_localhost(
-                    RRD_TYPE_TC
-                    , id
-                    , name
-                    , d->family ? d->family : d->id
-                    , RRD_TYPE_TC ".qos_ctokens"
-                    , "Class cTokens"
-                    , "ctokens"
-                    , "tc"
-                    , NULL
-                    , 7040
-                    , localhost->rrd_update_every
-                    , RRDSET_TYPE_LINE
-            );
-        }
-        else {
-            debug(D_TC_LOOP, "TC: Updating _ctokens chart for device '%s'", d->name?d->name:d->id);
-            rrdset_next(d->st_ctokens);
-
-            if(unlikely(d->name_updated)) {
-                char name[RRD_ID_LENGTH_MAX + 1];
-                snprintfz(name, RRD_ID_LENGTH_MAX, "%s_ctokens", d->name?d->name:d->id);
-                rrdset_set_name(d->st_ctokens, name);
-            }
-
-            // FIXME
-            // update the family
-        }
-
-        for(c = d->classes ; c ; c = c->next) {
-            if(unlikely(!c->render)) continue;
-
-            if(unlikely(!c->rd_ctokens))
-                c->rd_ctokens = rrddim_add(d->st_ctokens, c->id, c->name?c->name:c->id, 1, 1, RRD_ALGORITHM_ABSOLUTE);
-            else if(unlikely(c->name_updated))
-                rrddim_set_name(d->st_ctokens, c->rd_ctokens, c->name);
-
-            rrddim_set_by_pointer(d->st_ctokens, c->rd_ctokens, c->ctokens);
-        }
-        rrdset_done(d->st_ctokens);
-    }
-
-    tc_device_classes_cleanup(d);
-}
-
-static inline void tc_device_set_class_name(struct tc_device *d, char *id, char *name) {
-    if(unlikely(!name || !*name)) return;
-
-    struct tc_class *c = tc_class_index_find(d, id, 0);
-    if(likely(c)) {
-        if(likely(c->name)) {
-            if(!strcmp(c->name, name)) return;
-            freez(c->name);
-            c->name = NULL;
-        }
-
-        if(likely(name && *name && strcmp(c->id, name) != 0)) {
-            debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
-            c->name = strdupz(name);
-            c->name_updated = 1;
-        }
-    }
-}
-
-static inline void tc_device_set_device_name(struct tc_device *d, char *name) {
-    if(unlikely(!name || !*name)) return;
-
-    if(d->name) {
-        if(!strcmp(d->name, name)) return;
-        freez(d->name);
-        d->name = NULL;
-    }
-
-    if(likely(name && *name && strcmp(d->id, name) != 0)) {
-        debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
-        d->name = strdupz(name);
-        d->name_updated = 1;
-    }
-}
-
-static inline void tc_device_set_device_family(struct tc_device *d, char *family) {
-    freez(d->family);
-    d->family = NULL;
-
-    if(likely(family && *family && strcmp(d->id, family) != 0)) {
-        debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
-        d->family = strdupz(family);
-        d->family_updated = 1;
-    }
-    // no need for null termination - it is already null
-}
-
-static inline struct tc_device *tc_device_create(char *id)
-{
-    struct tc_device *d = tc_device_index_find(id, 0);
-
-    if(!d) {
-        debug(D_TC_LOOP, "TC: Creating device '%s'", id);
-
-        d = callocz(1, sizeof(struct tc_device));
-
-        d->id = strdupz(id);
-        d->hash = simple_hash(d->id);
-        d->enabled = (char)-1;
-
-        avl_init(&d->classes_index, tc_class_compare);
-        if(unlikely(tc_device_index_add(d) != d))
-            error("plugin_tc: INTERNAL ERROR: removing device '%s' removed a different device.", d->id);
-
-        if(!tc_device_root) {
-            tc_device_root = d;
-        }
-        else {
-            d->next = tc_device_root;
-            tc_device_root->prev = d;
-            tc_device_root = d;
-        }
-    }
-
-    return(d);
-}
-
-static inline struct tc_class *tc_class_add(struct tc_device *n, char *id, char qdisc, char *parentid, char *leafid)
-{
-    struct tc_class *c = tc_class_index_find(n, id, 0);
-
-    if(!c) {
-        debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
-
-        c = callocz(1, sizeof(struct tc_class));
-
-        if(unlikely(!n->classes))
-            n->classes = c;
-
-        else if(likely(n->last_class)) {
-            n->last_class->next = c;
-            c->prev = n->last_class;
-        }
-
-        n->last_class = c;
-
-        c->id = strdupz(id);
-        c->hash = simple_hash(c->id);
-
-        c->isqdisc = qdisc;
-        if(parentid && *parentid) {
-            c->parentid = strdupz(parentid);
-            c->parent_hash = simple_hash(c->parentid);
-        }
-
-        if(leafid && *leafid) {
-            c->leafid = strdupz(leafid);
-            c->leaf_hash = simple_hash(c->leafid);
-        }
-
-        if(unlikely(tc_class_index_add(n, c) != c))
-            error("plugin_tc: INTERNAL ERROR: attempt index class '%s' on device '%s': already exists", c->id, n->id);
-    }
-    return(c);
-}
-
-static inline void tc_device_free(struct tc_device *n)
-{
-    if(n->next) n->next->prev = n->prev;
-    if(n->prev) n->prev->next = n->next;
-    if(tc_device_root == n) {
-        if(n->next) tc_device_root = n->next;
-        else tc_device_root = n->prev;
-    }
-
-    if(unlikely(tc_device_index_del(n) != n))
-        error("plugin_tc: INTERNAL ERROR: removing device '%s' removed a different device.", n->id);
-
-    while(n->classes) tc_class_free(n, n->classes);
-
-    freez(n->id);
-    freez(n->name);
-    freez(n->family);
-    freez(n);
-}
-
-static inline void tc_device_free_all()
-{
-    while(tc_device_root)
-        tc_device_free(tc_device_root);
-}
-
-#define PLUGINSD_MAX_WORDS 20
-
-static inline int tc_space(char c) {
-    switch(c) {
-    case ' ':
-    case '\t':
-    case '\r':
-    case '\n':
-        return 1;
-
-    default:
-        return 0;
-    }
-}
-
-static inline void tc_split_words(char *str, char **words, int max_words) {
-    char *s = str;
-    int i = 0;
-
-    // skip all white space
-    while(tc_space(*s)) s++;
-
-    // store the first word
-    words[i++] = s;
-
-    // while we have something
-    while(*s) {
-        // if it is a space
-        if(unlikely(tc_space(*s))) {
-
-            // terminate the word
-            *s++ = '\0';
-
-            // skip all white space
-            while(tc_space(*s)) s++;
-
-            // if we reached the end, stop
-            if(!*s) break;
-
-            // store the next word
-            if(i < max_words) words[i++] = s;
-            else break;
-        }
-        else s++;
-    }
-
-    // terminate the words
-    while(i < max_words) words[i++] = NULL;
-}
-
-static pid_t tc_child_pid = 0;
-
-static void tc_main_cleanup(void *ptr) {
-    struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
-
-    info("cleaning up...");
-
-    if(tc_child_pid) {
-        info("TC: killing with SIGTERM tc-qos-helper process %d", tc_child_pid);
-        if(killpid(tc_child_pid, SIGTERM) != -1) {
-            siginfo_t info;
-
-            info("TC: waiting for tc plugin child process pid %d to exit...", tc_child_pid);
-            waitid(P_PID, (id_t) tc_child_pid, &info, WEXITED);
-            // info("TC: finished tc plugin child process pid %d.", tc_child_pid);
-        }
-
-        tc_child_pid = 0;
-    }
-
-    static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
-}
-
-void *tc_main(void *ptr) {
-    netdata_thread_cleanup_push(tc_main_cleanup, ptr);
-
-    struct rusage thread;
-
-    char buffer[TC_LINE_MAX+1] = "";
-    char *words[PLUGINSD_MAX_WORDS] = { NULL };
-
-    uint32_t BEGIN_HASH = simple_hash("BEGIN");
-    uint32_t END_HASH = simple_hash("END");
-    uint32_t QDISC_HASH = simple_hash("qdisc");
-    uint32_t CLASS_HASH = simple_hash("class");
-    uint32_t SENT_HASH = simple_hash("Sent");
-    uint32_t LENDED_HASH = simple_hash("lended:");
-    uint32_t TOKENS_HASH = simple_hash("tokens:");
-    uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
-    uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
-    uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
-    uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
-#ifdef DETACH_PLUGINS_FROM_NETDATA
-    uint32_t MYPID_HASH = simple_hash("MYPID");
-#endif
-    uint32_t first_hash;
-
-    snprintfz(buffer, TC_LINE_MAX, "%s/tc-qos-helper.sh", netdata_configured_plugins_dir);
-    char *tc_script = config_get("plugin:tc", "script to run to get tc values", buffer);
-
-    while(!netdata_exit) {
-        FILE *fp;
-        struct tc_device *device = NULL;
-        struct tc_class *class = NULL;
-
-        snprintfz(buffer, TC_LINE_MAX, "exec %s %d", tc_script, localhost->rrd_update_every);
-        debug(D_TC_LOOP, "executing '%s'", buffer);
-
-        fp = mypopen(buffer, (pid_t *)&tc_child_pid);
-        if(unlikely(!fp)) {
-            error("TC: Cannot popen(\"%s\", \"r\").", buffer);
-            goto cleanup;
-        }
-
-        while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
-            if(unlikely(netdata_exit)) break;
-
-            buffer[TC_LINE_MAX] = '\0';
-            // debug(D_TC_LOOP, "TC: read '%s'", buffer);
-
-            tc_split_words(buffer, words, PLUGINSD_MAX_WORDS);
-
-            if(unlikely(!words[0] || !*words[0])) {
-                // debug(D_TC_LOOP, "empty line");
-                continue;
-            }
-            // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
-
-            first_hash = simple_hash(words[0]);
-
-            if(unlikely(device && ((first_hash == CLASS_HASH && strcmp(words[0], "class") == 0) ||  (first_hash == QDISC_HASH && strcmp(words[0], "qdisc") == 0)))) {
-                // 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]);
-
-                char *type     = words[1];  // the class/qdisc type: htb, fq_codel, etc
-                char *id       = words[2];  // the class/qdisc major:minor
-                char *parent   = words[3];  // the word 'parent' or 'root'
-                char *parentid = words[4];  // parentid
-                char *leaf     = words[5];  // the word 'leaf'
-                char *leafid   = words[6];  // leafid
-
-                int parent_is_root = 0;
-                int parent_is_parent = 0;
-                if(likely(parent)) {
-                    parent_is_parent = !strcmp(parent, "parent");
-
-                    if(!parent_is_parent)
-                        parent_is_root = !strcmp(parent, "root");
-                }
-
-                if(likely(type && id && (parent_is_root || parent_is_parent))) {
-                    char qdisc = 0;
-
-                    if(first_hash == QDISC_HASH) {
-                        qdisc = 1;
-
-                        if(!strcmp(type, "ingress")) {
-                            // we don't want to get the ingress qdisc
-                            // there should be an IFB interface for this
-
-                            class = NULL;
-                            continue;
-                        }
-
-                        if(parent_is_parent && parentid) {
-                            // eliminate the minor number from parentid
-                            // why: parentid is the id of the parent class
-                            // but major: is also the id of the parent qdisc
-
-                            char *s = parentid;
-                            while(*s && *s != ':') s++;
-                            if(*s == ':') s[1] = '\0';
-                        }
-                    }
-
-                    if(parent_is_root) {
-                        parentid = NULL;
-                        leafid = NULL;
-                    }
-                    else if(!leaf || strcmp(leaf, "leaf") != 0)
-                        leafid = NULL;
-
-                    char leafbuf[20 + 1] = "";
-                    if(leafid && leafid[strlen(leafid) - 1] == ':') {
-                        strncpyz(leafbuf, leafid, 20 - 1);
-                        strcat(leafbuf, "1");
-                        leafid = leafbuf;
-                    }
-
-                    class = tc_class_add(device, id, qdisc, parentid, leafid);
-                }
-                else {
-                    // clear the last class
-                    class = NULL;
-                }
-            }
-            else if(unlikely(first_hash == END_HASH && strcmp(words[0], "END") == 0)) {
-                // debug(D_TC_LOOP, "END line");
-
-                if(likely(device)) {
-                    netdata_thread_disable_cancelability();
-                    tc_device_commit(device);
-                    // tc_device_free(device);
-                    netdata_thread_enable_cancelability();
-                }
-
-                device = NULL;
-                class = NULL;
-            }
-            else if(unlikely(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0)) {
-                // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
-
-                if(likely(words[1] && *words[1])) {
-                    device = tc_device_create(words[1]);
-                }
-                else {
-                    // tc_device_free(device);
-                    device = NULL;
-                }
-
-                class = NULL;
-            }
-            else if(unlikely(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0)) {
-                // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
-                if(likely(words[1] && *words[1])) {
-                    class->bytes = str2ull(words[1]);
-                    class->updated = 1;
-                }
-                else {
-                    class->updated = 0;
-                }
-
-                if(likely(words[3] && *words[3]))
-                    class->packets = str2ull(words[3]);
-
-                if(likely(words[6] && *words[6]))
-                    class->dropped = str2ull(words[6]);
-
-                if(likely(words[8] && *words[8]))
-                    class->overlimits = str2ull(words[8]);
-
-                if(likely(words[10] && *words[10]))
-                    class->requeues = str2ull(words[8]);
-            }
-            else if(unlikely(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0)) {
-                // debug(D_TC_LOOP, "LENDED line '%s'", words[1]);
-                if(likely(words[1] && *words[1]))
-                    class->lended = str2ull(words[1]);
-
-                if(likely(words[3] && *words[3]))
-                    class->borrowed = str2ull(words[3]);
-
-                if(likely(words[5] && *words[5]))
-                    class->giants = str2ull(words[5]);
-            }
-            else if(unlikely(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0)) {
-                // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]);
-                if(likely(words[1] && *words[1]))
-                    class->tokens = str2ull(words[1]);
-
-                if(likely(words[3] && *words[3]))
-                    class->ctokens = str2ull(words[3]);
-            }
-            else if(unlikely(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0)) {
-                // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
-                if(likely(words[1] && *words[1]))
-                    tc_device_set_device_name(device, words[1]);
-            }
-            else if(unlikely(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0)) {
-                // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
-                if(likely(words[1] && *words[1]))
-                    tc_device_set_device_family(device, words[1]);
-            }
-            else if(unlikely(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0)) {
-                // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
-                char *id    = words[1];
-                char *path  = words[2];
-                if(likely(id && *id && path && *path))
-                    tc_device_set_class_name(device, id, path);
-            }
-            else if(unlikely(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0)) {
-                // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
-                getrusage(RUSAGE_THREAD, &thread);
-
-                static RRDSET *stcpu = NULL;
-                static RRDDIM *rd_user = NULL, *rd_system = NULL;
-
-                if(unlikely(!stcpu)) {
-                    stcpu = rrdset_create_localhost(
-                            "netdata"
-                            , "plugin_tc_cpu"
-                            , NULL
-                            , "tc.helper"
-                            , NULL
-                            , "NetData TC CPU usage"
-                            , "milliseconds/s"
-                            , "tc"
-                            , NULL
-                            , 135000
-                            , localhost->rrd_update_every
-                            , RRDSET_TYPE_STACKED
-                    );
-                    rd_user   = rrddim_add(stcpu, "user",  NULL,  1, 1000, RRD_ALGORITHM_INCREMENTAL);
-                    rd_system = rrddim_add(stcpu, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
-                }
-                else rrdset_next(stcpu);
-
-                rrddim_set_by_pointer(stcpu, rd_user  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
-                rrddim_set_by_pointer(stcpu, rd_system, thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
-                rrdset_done(stcpu);
-
-                static RRDSET *sttime = NULL;
-                static RRDDIM *rd_run_time = NULL;
-
-                if(unlikely(!sttime)) {
-                    sttime = rrdset_create_localhost(
-                            "netdata"
-                            , "plugin_tc_time"
-                            , NULL
-                            , "tc.helper"
-                            , NULL
-                            , "NetData TC script execution"
-                            , "milliseconds/run"
-                            , "tc"
-                            , NULL
-                            , 135001
-                            , localhost->rrd_update_every
-                            , RRDSET_TYPE_AREA
-                    );
-                    rd_run_time = rrddim_add(sttime, "run_time",  "run time",  1, 1, RRD_ALGORITHM_ABSOLUTE);
-                }
-                else rrdset_next(sttime);
-
-                rrddim_set_by_pointer(sttime, rd_run_time, str2ll(words[1], NULL));
-                rrdset_done(sttime);
-
-            }
-#ifdef DETACH_PLUGINS_FROM_NETDATA
-            else if(unlikely(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0))) {
-                // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
-                char *id = words[1];
-                pid_t pid = atol(id);
-
-                if(likely(pid)) tc_child_pid = pid;
-
-                debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
-            }
-#endif
-            //else {
-            //  debug(D_TC_LOOP, "IGNORED line");
-            //}
-        }
-
-        // fgets() failed or loop broke
-        int code = mypclose(fp, (pid_t)tc_child_pid);
-        tc_child_pid = 0;
-
-        if(unlikely(device)) {
-            // tc_device_free(device);
-            device = NULL;
-            class = NULL;
-        }
-
-        if(unlikely(netdata_exit)) {
-            tc_device_free_all();
-            goto cleanup;
-        }
-
-        if(code == 1 || code == 127) {
-            // 1 = DISABLE
-            // 127 = cannot even run it
-            error("TC: tc-qos-helper.sh exited with code %d. Disabling it.", code);
-
-            tc_device_free_all();
-            goto cleanup;
-        }
-
-        sleep((unsigned int) localhost->rrd_update_every);
-    }
-
-cleanup: ; // added semi-colon to prevent older gcc error: label at end of compound statement
-    netdata_thread_cleanup_pop(1);
-    return NULL;
-}