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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
commit1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch)
tree8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /collectors/tc.plugin
parentUpdate watch file (diff)
downloadnetdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz
netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/tc.plugin')
-rw-r--r--collectors/tc.plugin/Makefile.am20
-rw-r--r--collectors/tc.plugin/Makefile.in562
-rw-r--r--collectors/tc.plugin/README.md183
-rw-r--r--collectors/tc.plugin/plugin_tc.c1168
-rw-r--r--collectors/tc.plugin/plugin_tc.h31
-rw-r--r--collectors/tc.plugin/tc-qos-helper.sh315
-rwxr-xr-xcollectors/tc.plugin/tc-qos-helper.sh.in315
7 files changed, 2594 insertions, 0 deletions
diff --git a/collectors/tc.plugin/Makefile.am b/collectors/tc.plugin/Makefile.am
new file mode 100644
index 000000000..f77e67d91
--- /dev/null
+++ b/collectors/tc.plugin/Makefile.am
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+ tc-qos-helper.sh \
+ $(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_plugins_SCRIPTS = \
+ tc-qos-helper.sh \
+ $(NULL)
+
+dist_noinst_DATA = \
+ tc-qos-helper.sh.in \
+ README.md \
+ $(NULL)
diff --git a/collectors/tc.plugin/Makefile.in b/collectors/tc.plugin/Makefile.in
new file mode 100644
index 000000000..d336e1f0d
--- /dev/null
+++ b/collectors/tc.plugin/Makefile.in
@@ -0,0 +1,562 @@
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+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_pluginsSCRIPTS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_pluginsSCRIPTS
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+ ctags-am distclean distclean-generic distdir dvi dvi-am html \
+ html-am info info-am install install-am install-data \
+ install-data-am install-dist_pluginsSCRIPTS install-dvi \
+ install-dvi-am install-exec install-exec-am install-html \
+ install-html-am install-info install-info-am install-man \
+ install-pdf install-pdf-am install-ps install-ps-am \
+ install-strip installcheck installcheck-am installdirs \
+ maintainer-clean maintainer-clean-generic mostlyclean \
+ mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+ uninstall-am uninstall-dist_pluginsSCRIPTS
+
+.in:
+ if sed \
+ -e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+ -e 's#[@]sbindir_POST@#$(sbindir)#g' \
+ -e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+ -e 's#[@]pythondir_POST@#$(pythondir)#g' \
+ -e 's#[@]configdir_POST@#$(configdir)#g' \
+ -e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+ -e 's#[@]cachedir_POST@#$(cachedir)#g' \
+ $< > $@.tmp; then \
+ mv "$@.tmp" "$@"; \
+ else \
+ rm -f "$@.tmp"; \
+ false; \
+ fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/collectors/tc.plugin/README.md b/collectors/tc.plugin/README.md
new file mode 100644
index 000000000..6670c491f
--- /dev/null
+++ b/collectors/tc.plugin/README.md
@@ -0,0 +1,183 @@
+## tc.plugin
+
+Live demo - **[see it in action here](https://registry.my-netdata.io/#menu_tc)** !
+
+![qos](https://cloud.githubusercontent.com/assets/2662304/14439411/b7f36254-0033-11e6-93f0-c739bb6a1c3a.gif)
+
+Netdata monitors `tc` QoS classes for all interfaces.
+
+If you also use [FireQOS](http://firehol.org/tutorial/fireqos-new-user/) it will collect
+interface and class names.
+
+There is a [shell helper](tc-qos-helper.sh.in) for this (all parsing is done by the plugin
+in `C` code - this shell script is just a configuration for the command to run to get `tc` output).
+
+The source of the tc plugin is [here](plugin_tc.c). It is somewhat complex, because a state
+machine was needed to keep track of all the `tc` classes, including the pseudo classes tc
+dynamically creates.
+
+## Motivation
+
+One category of metrics missing in Linux monitoring, is bandwidth consumption for each open
+socket (inbound and outbound traffic). So, you cannot tell how much bandwidth your web server,
+your database server, your backup, your ssh sessions, etc are using.
+
+To solve this problem, the most *adventurous* Linux monitoring tools install kernel modules to
+capture all traffic, analyze it and provide reports per application. A lot of work, CPU intensive
+and with a great degree of risk (due to the kernel modules involved which might affect the
+stability of the whole system). Not to mention that such solutions are probably better suited
+for a core linux router in your network.
+
+Others use NFACCT, the netfilter accounting module which is already part of the Linux firewall.
+However, this would require configuring a firewall on every system you want to measure bandwidth.
+
+QoS monitoring attempts to solve this in a much cleaner way.
+
+## Introduction to QoS
+
+One of the features the Linux kernel has, but it is rarely used, is its ability to
+**apply QoS on traffic**. Even most interesting is that it can apply QoS to **both inbound and
+outbound traffic**.
+
+QoS is about 2 features:
+
+1. **Classify traffic**
+
+ Classification is the process of organizing traffic in groups, called **classes**.
+ Classification can evaluate every aspect of network packets, like source and destination ports,
+ source and destination IPs, netfilter marks, etc.
+
+ When you classify traffic, you just assign a label to it. For example **I call `web server`
+ traffic, the traffic from my server's tcp/80, tcp/443 and to my server's tcp/80, tcp/443,
+ while I call `web surfing` all other tcp/80 and tcp/443 traffic**. You can use any combinations
+ you like. There is no limit.
+
+2. **Apply traffic shaping rules to these classes**
+
+ Traffic shaping is used to control how network interface bandwidth should be shared among the
+ classes. Of course we are not interested for this feature to just monitor the traffic.
+ Classification will be enough for monitoring everything.
+
+The key reasons of applying QoS on all servers (even cloud ones) are:
+
+ - **ensure administrative tasks (like ssh, dns, etc) will always have a small but guaranteed
+ bandwidth.** QoS can guarantee that services like ssh, dns, ntp, etc will always have a small
+ supply of bandwidth. So, no matter what happens, you will be able to ssh to your server and
+ DNS will always work.
+
+ - **ensure other administrative tasks will not monopolize all the available bandwidth.**
+ Services like backups, file copies, database dumps, etc can easily monopolize all the
+ available bandwidth. It is common for example a nightly backup, or a huge file transfer
+ to negatively influence the end-user experience. QoS can fix that.
+
+ - **ensure each end-user connection will get a fair cut of the available bandwidth.**
+ Several QoS queuing disciplines in Linux do this automatically, without any configuration from you.
+ The result is that new sockets are favored over older ones, so that users will get a snappier
+ experience, while others are transferring large amounts of traffic.
+
+ - **protect the servers from DDoS attacks.**
+ When your system is under a DDoS attack, it will get a lot more bandwidth compared to the one it
+ can handle and probably your applications will crash. Setting a limit on the inbound traffic using
+ QoS, will protect your servers (throttle the requests) and depending on the size of the attack may
+ allow your legitimate users to access the server, while the attack is taking place.
+
+
+Once **traffic classification** is applied, netdata can visualize the bandwidth consumption per
+class in real-time (no configuration is needed for netdata - it will figure it out).
+
+QoS, is extremely light. You will configure it once, and this is it. It will not bother you again
+and it will not use any noticeable CPU resources, especially on application and database servers.
+
+## QoS in Linux? Have you lost your mind?
+
+Yes I know... but no, I have not!
+
+Of course, `tc` is probably **the most undocumented, complicated and unfriendly** command in Linux.
+
+For example, for matching a simple port range in `tc`, e.g. all the high ports, from 1025 to 65535
+inclusive, you have to match these:
+
+```
+1025/0xffff 1026/0xfffe 1028/0xfffc 1032/0xfff8 1040/0xfff0
+1056/0xffe0 1088/0xffc0 1152/0xff80 1280/0xff00 1536/0xfe00
+2048/0xf800 4096/0xf000 8192/0xe000 16384/0xc000 32768/0x8000
+```
+
+I know what you are thinking right now! **And I agree!**
+
+This is why I wrote **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**, a tool to
+simplify QoS management in Linux.
+
+The **[FireHOL](https://firehol.org/)** package already distributes **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**.
+Check the **[FireQOS tutorial](https://firehol.org/tutorial/fireqos-new-user/)**
+to learn how to write your own QoS configuration.
+
+With **[FireQOS](https://firehol.org/tutorial/fireqos-new-user/)**, it is **really simple for everyone
+to use QoS in Linux**. Just install the package `firehol`. It should already be available for your
+distribution. If not, check the **[FireHOL Installation Guide](https://firehol.org/installing/)**.
+After that, you will have the `fireqos` command.
+
+This is the file `/etc/firehol/fireqos.conf` we use at the netdata demo site:
+
+```sh
+ # configure the netdata ports
+ server_netdata_ports="tcp/19999"
+
+ interface eth0 world bidirectional ethernet balanced rate 50Mbit
+ class arp
+ match arp
+
+ class icmp
+ match icmp
+
+ class dns commit 1Mbit
+ server dns
+ client dns
+
+ class ntp
+ server ntp
+ client ntp
+
+ class ssh commit 2Mbit
+ server ssh
+ client ssh
+
+ class rsync commit 2Mbit max 10Mbit
+ server rsync
+ client rsync
+
+ class web_server commit 40Mbit
+ server http
+ server netdata
+
+ class client
+ client surfing
+
+ class nms commit 1Mbit
+ match input src 10.2.3.5
+```
+
+Nothing more is needed. You just run `fireqos start` to apply this configuration, restart netdata
+and you have real-time visualization of the bandwidth consumption of your applications. FireQOS is
+not a daemon. It will just convert the configuration to `tc` commands. It will run them and it will
+exit.
+
+**IMPORTANT**: If you copy this configuration to apply it to your system, please adapt the
+speeds - experiment in non-production environments to learn the tool, before applying it on
+your servers.
+
+And this is what you are going to get:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/14436322/c91d90a4-0024-11e6-9fb1-57cdef1580df.png)
+
+---
+
+## More examples:
+
+This is QoS from a linux router. Check these features:
+
+1. It is real-time (per second updates)
+2. QoS really works in Linux - check that the `background` traffic is squeezed when `surfing` needs it.
+
+![test2](https://cloud.githubusercontent.com/assets/2662304/14093004/68966020-f553-11e5-98fe-ffee2086fafd.gif)
+
diff --git a/collectors/tc.plugin/plugin_tc.c b/collectors/tc.plugin/plugin_tc.c
new file mode 100644
index 000000000..083cc2986
--- /dev/null
+++ b/collectors/tc.plugin/plugin_tc.c
@@ -0,0 +1,1168 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_tc.h"
+
+#define RRD_TYPE_TC "tc"
+#define PLUGIN_TC_NAME "tc.plugin"
+
+// ----------------------------------------------------------------------------
+// /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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_TC_QOS
+ , 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);
+
+ // TODO
+ // 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_TC_QOS_PACKETS
+ , 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);
+ }
+
+ // TODO
+ // 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_TC_QOS_DROPPED
+ , 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);
+ }
+
+ // TODO
+ // 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_TC_QOS_TOCKENS
+ , 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);
+ }
+
+ // TODO
+ // 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_TC_QOS_CTOCKENS
+ , 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);
+ }
+
+ // TODO
+ // 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 command[FILENAME_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(command, 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", command);
+
+ while(!netdata_exit) {
+ FILE *fp;
+ struct tc_device *device = NULL;
+ struct tc_class *class = NULL;
+
+ snprintfz(command, TC_LINE_MAX, "exec %s %d", tc_script, localhost->rrd_update_every);
+ debug(D_TC_LOOP, "executing '%s'", command);
+
+ fp = mypopen(command, (pid_t *)&tc_child_pid);
+ if(unlikely(!fp)) {
+ error("TC: Cannot popen(\"%s\", \"r\").", command);
+ goto cleanup;
+ }
+
+ char buffer[TC_LINE_MAX+1] = "";
+ 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_NETDATA_TC_CPU
+ , 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"
+ , PLUGIN_TC_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_NETDATA_TC_TIME
+ , 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;
+}
diff --git a/collectors/tc.plugin/plugin_tc.h b/collectors/tc.plugin/plugin_tc.h
new file mode 100644
index 000000000..c64658415
--- /dev/null
+++ b/collectors/tc.plugin/plugin_tc.h
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_TC_H
+#define NETDATA_PLUGIN_TC_H 1
+
+#include "../../daemon/common.h"
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_TC \
+ { \
+ .name = "PLUGIN[tc]", \
+ .config_section = CONFIG_SECTION_PLUGINS, \
+ .config_name = "tc", \
+ .enabled = 1, \
+ .thread = NULL, \
+ .init_routine = NULL, \
+ .start_routine = tc_main \
+ },
+
+extern void *tc_main(void *ptr);
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_TC
+
+#endif // (TARGET_OS == OS_LINUX)
+
+
+#endif /* NETDATA_PLUGIN_TC_H */
+
diff --git a/collectors/tc.plugin/tc-qos-helper.sh b/collectors/tc.plugin/tc-qos-helper.sh
new file mode 100644
index 000000000..b49d1f509
--- /dev/null
+++ b/collectors/tc.plugin/tc-qos-helper.sh
@@ -0,0 +1,315 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This script is a helper to allow netdata collect tc data.
+# tc output parsing has been implemented in C, inside netdata
+# This script allows setting names to dimensions.
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+
+# -----------------------------------------------------------------------------
+# logging functions
+
+PROGRAM_FILE="$0"
+PROGRAM_NAME="$(basename $0)"
+PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
+
+logdate() {
+ date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+ local status="${1}"
+ shift
+
+ echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+ log WARNING "${@}"
+}
+
+error() {
+ log ERROR "${@}"
+}
+
+info() {
+ log INFO "${@}"
+}
+
+fatal() {
+ log FATAL "${@}"
+ exit 1
+}
+
+debug=0
+debug() {
+ [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+# find /var/run/fireqos
+
+# the default
+fireqos_run_dir="/var/run/fireqos"
+
+function realdir {
+ local r="$1"
+ local t=$(readlink "$r")
+
+ while [ "$t" ]
+ do
+ r=$(cd $(dirname "$r") && cd $(dirname "$t") && pwd -P)/$(basename "$t")
+ t=$(readlink "$r")
+ done
+
+ dirname "$r"
+}
+
+if [ ! -d "${fireqos_run_dir}" ]
+ then
+
+ # the fireqos executable - we will use it to find its config
+ fireqos="$(which fireqos 2>/dev/null || command -v fireqos 2>/dev/null)"
+
+ if [ ! -z "${fireqos}" ]
+ then
+
+ fireqos_exec_dir="$(realdir ${fireqos})"
+
+ if [ ! -z "${fireqos_exec_dir}" -a "${fireqos_exec_dir}" != "." -a -f "${fireqos_exec_dir}/install.config" ]
+ then
+
+ LOCALSTATEDIR=
+ source "${fireqos_exec_dir}/install.config"
+
+ if [ -d "${LOCALSTATEDIR}/run/fireqos" ]
+ then
+ fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
+ else
+ warning "FireQoS is installed as '${fireqos}', its installation config at '${fireqos_exec_dir}/install.config' specifies local state data at '${LOCALSTATEDIR}/run/fireqos', but this directory is not found or is not readable (check the permissions of its parents)."
+ fi
+ else
+ warning "Although FireQoS is installed on this system as '${fireqos}', I cannot find/read its installation configuration at '${fireqos_exec_dir}/install.config'."
+ fi
+ else
+ warning "FireQoS is not installed on this system. Use FireQoS to apply traffic QoS and expose the class names to netdata. Check https://github.com/netdata/netdata/wiki/You-should-install-QoS-on-all-your-servers"
+ fi
+fi
+
+# -----------------------------------------------------------------------------
+
+[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
+[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
+
+plugins_dir="${NETDATA_PLUGINS_DIR}"
+tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
+
+
+# -----------------------------------------------------------------------------
+# user configuration
+
+# time in seconds to refresh QoS class/qdisc names
+qos_get_class_names_every=120
+
+# time in seconds to exit - netdata will restart the script
+qos_exit_every=3600
+
+# what to use? classes or qdiscs?
+tc_show="qdisc" # can also be "class"
+
+
+# -----------------------------------------------------------------------------
+# check if we have a valid number for interval
+
+t=${1}
+update_every=$((t))
+[ $((update_every)) -lt 1 ] && update_every=${NETDATA_UPDATE_EVERY}
+[ $((update_every)) -lt 1 ] && update_every=1
+
+
+# -----------------------------------------------------------------------------
+# allow the user to override our defaults
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/tc-qos-helper.conf" "${NETDATA_USER_CONFIG_DIR}/tc-qos-helper.conf"
+do
+ if [ -f "${CONFIG}" ]
+ then
+ info "Loading config file '${CONFIG}'..."
+ source "${CONFIG}"
+ [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+ else
+ warning "Cannot find file '${CONFIG}'."
+ fi
+done
+
+case "${tc_show}" in
+ qdisc|class)
+ ;;
+
+ *)
+ error "tc_show variable can be either 'qdisc' or 'class' but is set to '${tc_show}'. Assuming it is 'qdisc'."
+ tc_show="qdisc"
+ ;;
+esac
+
+
+# -----------------------------------------------------------------------------
+# default sleep function
+
+LOOPSLEEPMS_LASTWORK=0
+loopsleepms() {
+ sleep $1
+}
+
+# if found and included, this file overwrites loopsleepms()
+# with a high resolution timer function for precise looping.
+. "${plugins_dir}/loopsleepms.sh.inc"
+
+
+# -----------------------------------------------------------------------------
+# final checks we can run
+
+if [ -z "${tc}" -o ! -x "${tc}" ]
+ then
+ fatal "cannot find command 'tc' in this system."
+fi
+
+tc_devices=
+fix_names=
+
+# -----------------------------------------------------------------------------
+
+setclassname() {
+ if [ "${tc_show}" = "qdisc" ]
+ then
+ echo "SETCLASSNAME $4 $2"
+ else
+ echo "SETCLASSNAME $3 $2"
+ fi
+}
+
+show_tc_cls() {
+ [ "${tc_show}" = "qdisc" ] && return 1
+
+ local x="${1}"
+
+ if [ -f /etc/iproute2/tc_cls ]
+ then
+ local classid name rest
+ while read classid name rest
+ do
+ [ -z "${classid}" -o -z "${name}" -o "${classid}" = "#" -o "${name}" = "#" -o "${classid:0:1}" = "#" -o "${name:0:1}" = "#" ] && continue
+ setclassname "" "${name}" "${classid}"
+ done </etc/iproute2/tc_cls
+ return 0
+ fi
+ return 1
+}
+
+show_fireqos_names() {
+ local x="${1}" name n interface_dev interface_classes interface_classes_monitor
+
+ if [ -f "${fireqos_run_dir}/ifaces/${x}" ]
+ then
+ name="$(<"${fireqos_run_dir}/ifaces/${x}")"
+ echo "SETDEVICENAME ${name}"
+
+ interface_dev=
+ interface_classes=
+ interface_classes_monitor=
+ source "${fireqos_run_dir}/${name}.conf"
+ for n in ${interface_classes_monitor}
+ do
+ setclassname ${n//|/ }
+ done
+ [ ! -z "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
+
+ return 0
+ fi
+
+ return 1
+}
+
+show_tc() {
+ local x="${1}"
+
+ echo "BEGIN ${x}"
+
+ # netdata can parse the output of tc
+ ${tc} -s ${tc_show} show dev ${x}
+
+ # check FireQOS names for classes
+ if [ ! -z "${fix_names}" ]
+ then
+ show_fireqos_names "${x}" || show_tc_cls "${x}"
+ fi
+
+ echo "END ${x}"
+}
+
+find_tc_devices() {
+ local count=0 devs= dev rest l
+
+ # find all the devices in the system
+ # without forking
+ while IFS=":| " read dev rest
+ do
+ count=$((count + 1))
+ [ ${count} -le 2 ] && continue
+ devs="${devs} ${dev}"
+ done </proc/net/dev
+
+ # from all the devices find the ones
+ # that have QoS defined
+ # unfortunately, one fork per device cannot be avoided
+ tc_devices=
+ for dev in ${devs}
+ do
+ l="$(${tc} class show dev ${dev} 2>/dev/null)"
+ [ ! -z "${l}" ] && tc_devices="${tc_devices} ${dev}"
+ done
+}
+
+# update devices and class names
+# once every 2 minutes
+names_every=$((qos_get_class_names_every / update_every))
+
+# exit this script every hour
+# it will be restarted automatically
+exit_after=$((qos_exit_every / update_every))
+
+c=0
+gc=0
+while [ 1 ]
+do
+ fix_names=
+ c=$((c + 1))
+ gc=$((gc + 1))
+
+ if [ ${c} -le 1 -o ${c} -ge ${names_every} ]
+ then
+ c=1
+ fix_names="YES"
+ find_tc_devices
+ fi
+
+ for d in ${tc_devices}
+ do
+ show_tc ${d}
+ done
+
+ echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}"
+
+ loopsleepms ${update_every}
+
+ [ ${gc} -gt ${exit_after} ] && exit 0
+done
diff --git a/collectors/tc.plugin/tc-qos-helper.sh.in b/collectors/tc.plugin/tc-qos-helper.sh.in
new file mode 100755
index 000000000..6f6b0a591
--- /dev/null
+++ b/collectors/tc.plugin/tc-qos-helper.sh.in
@@ -0,0 +1,315 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This script is a helper to allow netdata collect tc data.
+# tc output parsing has been implemented in C, inside netdata
+# This script allows setting names to dimensions.
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+
+# -----------------------------------------------------------------------------
+# logging functions
+
+PROGRAM_FILE="$0"
+PROGRAM_NAME="$(basename $0)"
+PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
+
+logdate() {
+ date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+ local status="${1}"
+ shift
+
+ echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+ log WARNING "${@}"
+}
+
+error() {
+ log ERROR "${@}"
+}
+
+info() {
+ log INFO "${@}"
+}
+
+fatal() {
+ log FATAL "${@}"
+ exit 1
+}
+
+debug=0
+debug() {
+ [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+# find /var/run/fireqos
+
+# the default
+fireqos_run_dir="/var/run/fireqos"
+
+function realdir {
+ local r="$1"
+ local t=$(readlink "$r")
+
+ while [ "$t" ]
+ do
+ r=$(cd $(dirname "$r") && cd $(dirname "$t") && pwd -P)/$(basename "$t")
+ t=$(readlink "$r")
+ done
+
+ dirname "$r"
+}
+
+if [ ! -d "${fireqos_run_dir}" ]
+ then
+
+ # the fireqos executable - we will use it to find its config
+ fireqos="$(which fireqos 2>/dev/null || command -v fireqos 2>/dev/null)"
+
+ if [ ! -z "${fireqos}" ]
+ then
+
+ fireqos_exec_dir="$(realdir ${fireqos})"
+
+ if [ ! -z "${fireqos_exec_dir}" -a "${fireqos_exec_dir}" != "." -a -f "${fireqos_exec_dir}/install.config" ]
+ then
+
+ LOCALSTATEDIR=
+ source "${fireqos_exec_dir}/install.config"
+
+ if [ -d "${LOCALSTATEDIR}/run/fireqos" ]
+ then
+ fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
+ else
+ warning "FireQoS is installed as '${fireqos}', its installation config at '${fireqos_exec_dir}/install.config' specifies local state data at '${LOCALSTATEDIR}/run/fireqos', but this directory is not found or is not readable (check the permissions of its parents)."
+ fi
+ else
+ warning "Although FireQoS is installed on this system as '${fireqos}', I cannot find/read its installation configuration at '${fireqos_exec_dir}/install.config'."
+ fi
+ else
+ warning "FireQoS is not installed on this system. Use FireQoS to apply traffic QoS and expose the class names to netdata. Check https://github.com/netdata/netdata/wiki/You-should-install-QoS-on-all-your-servers"
+ fi
+fi
+
+# -----------------------------------------------------------------------------
+
+[ -z "${NETDATA_PLUGINS_DIR}" ] && NETDATA_PLUGINS_DIR="$(dirname "${0}")"
+[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+
+plugins_dir="${NETDATA_PLUGINS_DIR}"
+tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
+
+
+# -----------------------------------------------------------------------------
+# user configuration
+
+# time in seconds to refresh QoS class/qdisc names
+qos_get_class_names_every=120
+
+# time in seconds to exit - netdata will restart the script
+qos_exit_every=3600
+
+# what to use? classes or qdiscs?
+tc_show="qdisc" # can also be "class"
+
+
+# -----------------------------------------------------------------------------
+# check if we have a valid number for interval
+
+t=${1}
+update_every=$((t))
+[ $((update_every)) -lt 1 ] && update_every=${NETDATA_UPDATE_EVERY}
+[ $((update_every)) -lt 1 ] && update_every=1
+
+
+# -----------------------------------------------------------------------------
+# allow the user to override our defaults
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/tc-qos-helper.conf" "${NETDATA_USER_CONFIG_DIR}/tc-qos-helper.conf"
+do
+ if [ -f "${CONFIG}" ]
+ then
+ info "Loading config file '${CONFIG}'..."
+ source "${CONFIG}"
+ [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+ else
+ warning "Cannot find file '${CONFIG}'."
+ fi
+done
+
+case "${tc_show}" in
+ qdisc|class)
+ ;;
+
+ *)
+ error "tc_show variable can be either 'qdisc' or 'class' but is set to '${tc_show}'. Assuming it is 'qdisc'."
+ tc_show="qdisc"
+ ;;
+esac
+
+
+# -----------------------------------------------------------------------------
+# default sleep function
+
+LOOPSLEEPMS_LASTWORK=0
+loopsleepms() {
+ sleep $1
+}
+
+# if found and included, this file overwrites loopsleepms()
+# with a high resolution timer function for precise looping.
+. "${plugins_dir}/loopsleepms.sh.inc"
+
+
+# -----------------------------------------------------------------------------
+# final checks we can run
+
+if [ -z "${tc}" -o ! -x "${tc}" ]
+ then
+ fatal "cannot find command 'tc' in this system."
+fi
+
+tc_devices=
+fix_names=
+
+# -----------------------------------------------------------------------------
+
+setclassname() {
+ if [ "${tc_show}" = "qdisc" ]
+ then
+ echo "SETCLASSNAME $4 $2"
+ else
+ echo "SETCLASSNAME $3 $2"
+ fi
+}
+
+show_tc_cls() {
+ [ "${tc_show}" = "qdisc" ] && return 1
+
+ local x="${1}"
+
+ if [ -f /etc/iproute2/tc_cls ]
+ then
+ local classid name rest
+ while read classid name rest
+ do
+ [ -z "${classid}" -o -z "${name}" -o "${classid}" = "#" -o "${name}" = "#" -o "${classid:0:1}" = "#" -o "${name:0:1}" = "#" ] && continue
+ setclassname "" "${name}" "${classid}"
+ done </etc/iproute2/tc_cls
+ return 0
+ fi
+ return 1
+}
+
+show_fireqos_names() {
+ local x="${1}" name n interface_dev interface_classes interface_classes_monitor
+
+ if [ -f "${fireqos_run_dir}/ifaces/${x}" ]
+ then
+ name="$(<"${fireqos_run_dir}/ifaces/${x}")"
+ echo "SETDEVICENAME ${name}"
+
+ interface_dev=
+ interface_classes=
+ interface_classes_monitor=
+ source "${fireqos_run_dir}/${name}.conf"
+ for n in ${interface_classes_monitor}
+ do
+ setclassname ${n//|/ }
+ done
+ [ ! -z "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
+
+ return 0
+ fi
+
+ return 1
+}
+
+show_tc() {
+ local x="${1}"
+
+ echo "BEGIN ${x}"
+
+ # netdata can parse the output of tc
+ ${tc} -s ${tc_show} show dev ${x}
+
+ # check FireQOS names for classes
+ if [ ! -z "${fix_names}" ]
+ then
+ show_fireqos_names "${x}" || show_tc_cls "${x}"
+ fi
+
+ echo "END ${x}"
+}
+
+find_tc_devices() {
+ local count=0 devs= dev rest l
+
+ # find all the devices in the system
+ # without forking
+ while IFS=":| " read dev rest
+ do
+ count=$((count + 1))
+ [ ${count} -le 2 ] && continue
+ devs="${devs} ${dev}"
+ done </proc/net/dev
+
+ # from all the devices find the ones
+ # that have QoS defined
+ # unfortunately, one fork per device cannot be avoided
+ tc_devices=
+ for dev in ${devs}
+ do
+ l="$(${tc} class show dev ${dev} 2>/dev/null)"
+ [ ! -z "${l}" ] && tc_devices="${tc_devices} ${dev}"
+ done
+}
+
+# update devices and class names
+# once every 2 minutes
+names_every=$((qos_get_class_names_every / update_every))
+
+# exit this script every hour
+# it will be restarted automatically
+exit_after=$((qos_exit_every / update_every))
+
+c=0
+gc=0
+while [ 1 ]
+do
+ fix_names=
+ c=$((c + 1))
+ gc=$((gc + 1))
+
+ if [ ${c} -le 1 -o ${c} -ge ${names_every} ]
+ then
+ c=1
+ fix_names="YES"
+ find_tc_devices
+ fi
+
+ for d in ${tc_devices}
+ do
+ show_tc ${d}
+ done
+
+ echo "WORKTIME ${LOOPSLEEPMS_LASTWORK}"
+
+ loopsleepms ${update_every}
+
+ [ ${gc} -gt ${exit_after} ] && exit 0
+done