diff options
Diffstat (limited to 'collectors/tc.plugin')
| -rw-r--r-- | collectors/tc.plugin/Makefile.am | 20 | ||||
| -rw-r--r-- | collectors/tc.plugin/Makefile.in | 562 | ||||
| -rw-r--r-- | collectors/tc.plugin/README.md | 183 | ||||
| -rw-r--r-- | collectors/tc.plugin/plugin_tc.c | 1168 | ||||
| -rw-r--r-- | collectors/tc.plugin/plugin_tc.h | 31 | ||||
| -rw-r--r-- | collectors/tc.plugin/tc-qos-helper.sh | 315 | ||||
| -rwxr-xr-x | collectors/tc.plugin/tc-qos-helper.sh.in | 315 |
7 files changed, 2594 insertions, 0 deletions
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'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)** ! + + + +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: + + + +--- + +## 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. + + + 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 |