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proc_net_wireless.c
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#include <stdbool.h>
#include "plugin_proc.h"
#define PLUGIN_PROC_MODULE_NETWIRELESS_NAME "/proc/net/wireless"
#define CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NETWIRELESS_NAME
static struct netwireless {
char *name;
uint32_t hash;
//flags
bool configured;
struct timeval updated;
int do_status;
int do_quality;
int do_discarded_packets;
int do_missed_beacon;
// Data collected
// status
kernel_uint_t status;
// Quality
calculated_number link;
calculated_number level;
calculated_number noise;
// Discarded packets
kernel_uint_t nwid;
kernel_uint_t crypt;
kernel_uint_t frag;
kernel_uint_t retry;
kernel_uint_t misc;
// missed beacon
kernel_uint_t missed_beacon;
const char *chart_id_net_status;
const char *chart_id_net_link;
const char *chart_id_net_level;
const char *chart_id_net_noise;
const char *chart_id_net_discarded_packets;
const char *chart_id_net_missed_beacon;
const char *chart_family;
// charts
// status
RRDSET *st_status;
// Quality
RRDSET *st_link;
RRDSET *st_level;
RRDSET *st_noise;
// Discarded Packets
RRDSET *st_discarded_packets;
// Missed beacon
RRDSET *st_missed_beacon;
// Dimensions
// status
RRDDIM *rd_status;
// Quality
RRDDIM *rd_link;
RRDDIM *rd_level;
RRDDIM *rd_noise;
// Discarded packets
RRDDIM *rd_nwid;
RRDDIM *rd_crypt;
RRDDIM *rd_frag;
RRDDIM *rd_retry;
RRDDIM *rd_misc;
// missed beacon
RRDDIM *rd_missed_beacon;
struct netwireless *next;
} *netwireless_root = NULL;
static void netwireless_free_st(struct netwireless *wireless_dev)
{
if (wireless_dev->st_status) rrdset_is_obsolete(wireless_dev->st_status);
if (wireless_dev->st_link) rrdset_is_obsolete(wireless_dev->st_link);
if (wireless_dev->st_level) rrdset_is_obsolete(wireless_dev->st_level);
if (wireless_dev->st_noise) rrdset_is_obsolete(wireless_dev->st_noise);
if (wireless_dev->st_discarded_packets) rrdset_is_obsolete(wireless_dev->st_discarded_packets);
if (wireless_dev->st_missed_beacon) rrdset_is_obsolete(wireless_dev->st_missed_beacon);
wireless_dev->st_status = NULL;
wireless_dev->st_link = NULL;
wireless_dev->st_level = NULL;
wireless_dev->st_noise = NULL;
wireless_dev->st_discarded_packets = NULL;
wireless_dev->st_missed_beacon = NULL;
}
static void netwireless_free(struct netwireless *wireless_dev)
{
wireless_dev->next = NULL;
freez((void *)wireless_dev->name);
netwireless_free_st(wireless_dev);
freez((void *)wireless_dev->chart_id_net_status);
freez((void *)wireless_dev->chart_id_net_link);
freez((void *)wireless_dev->chart_id_net_level);
freez((void *)wireless_dev->chart_id_net_noise);
freez((void *)wireless_dev->chart_id_net_discarded_packets);
freez((void *)wireless_dev->chart_id_net_missed_beacon);
freez((void *)wireless_dev);
}
static void netwireless_cleanup(struct timeval *timestamp)
{
struct netwireless *previous = NULL;
struct netwireless *current;
// search it, from beginning to the end
for (current = netwireless_root; current;) {
if (timercmp(¤t->updated, timestamp, <)) {
struct netwireless *to_free = current;
current = current->next;
netwireless_free(to_free);
if (previous) {
previous->next = current;
} else {
netwireless_root = current;
}
} else {
previous = current;
current = current->next;
}
}
}
// finds an existing interface or creates a new entry
static struct netwireless *find_or_create_wireless(const char *name)
{
struct netwireless *wireless;
uint32_t hash = simple_hash(name);
// search it, from beginning to the end
for (wireless = netwireless_root ; wireless ; wireless = wireless->next) {
if (unlikely(hash == wireless->hash && !strcmp(name, wireless->name))) {
return wireless;
}
}
// create a new one
wireless = callocz(1, sizeof(struct netwireless));
wireless->name = strdupz(name);
wireless->hash = hash;
// link it to the end
if (netwireless_root) {
struct netwireless *last_node;
for (last_node = netwireless_root; last_node->next ; last_node = last_node->next);
last_node->next = wireless;
} else
netwireless_root = wireless;
return wireless;
}
static void configure_device(int do_status, int do_quality, int do_discarded_packets, int do_missed,
struct netwireless *wireless_dev) {
wireless_dev->do_status = do_status;
wireless_dev->do_quality = do_quality;
wireless_dev->do_discarded_packets = do_discarded_packets;
wireless_dev->do_missed_beacon = do_missed;
wireless_dev->configured = true;
char buffer[RRD_ID_LENGTH_MAX + 1];
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_status", wireless_dev->name);
wireless_dev->chart_id_net_status = strdupz(buffer);
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_link_quality", wireless_dev->name);
wireless_dev->chart_id_net_link = strdupz(buffer);
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_signal_level", wireless_dev->name);
wireless_dev->chart_id_net_level = strdupz(buffer);
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_noise_level", wireless_dev->name);
wireless_dev->chart_id_net_noise = strdupz(buffer);
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_discarded_packets", wireless_dev->name);
wireless_dev->chart_id_net_discarded_packets = strdupz(buffer);
snprintfz(buffer, RRD_ID_LENGTH_MAX, "%s_missed_beacon", wireless_dev->name);
wireless_dev->chart_id_net_missed_beacon = strdupz(buffer);
}
int do_proc_net_wireless(int update_every, usec_t dt)
{
UNUSED(dt);
static procfile *ff = NULL;
static int do_status, do_quality = -1, do_discarded_packets, do_beacon;
static char *proc_net_wireless_filename = NULL;
if (unlikely(do_quality == -1)) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/wireless");
proc_net_wireless_filename = config_get(CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS,"filename to monitor",
filename);
do_status = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS,
"status for all interfaces", CONFIG_BOOLEAN_AUTO);
do_quality = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS,
"quality for all interfaces", CONFIG_BOOLEAN_AUTO);
do_discarded_packets = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS,
"discarded packets for all interfaces",
CONFIG_BOOLEAN_AUTO);
do_beacon = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETWIRELESS,
"missed beacon for all interface", CONFIG_BOOLEAN_AUTO);
}
if (unlikely(!ff)) {
ff = procfile_open(proc_net_wireless_filename, " \t,|", PROCFILE_FLAG_DEFAULT);
if (unlikely(!ff)) return 1;
}
ff = procfile_readall(ff);
if (unlikely(!ff)) return 1;
size_t lines = procfile_lines(ff);
struct timeval timestamp;
size_t l;
gettimeofday(×tamp, NULL);
for (l = 2; l < lines; l++) {
if (unlikely(procfile_linewords(ff, l) < 11)) continue;
char *name = procfile_lineword(ff, l, 0);
size_t len = strlen(name);
if (name[len - 1] == ':') name[len - 1] = '\0';
struct netwireless *wireless_dev = find_or_create_wireless(name);
if (unlikely(!wireless_dev->configured)) {
configure_device(do_status, do_quality, do_discarded_packets, do_beacon, wireless_dev);
}
if (likely(do_status != CONFIG_BOOLEAN_NO)) {
wireless_dev->status = str2kernel_uint_t(procfile_lineword(ff, l, 1));
if (unlikely(!wireless_dev->st_status)) {
wireless_dev->st_status = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_status,
NULL,
wireless_dev->name,
"wireless.status",
"Internal status reported by interface.",
"status",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_status, RRDSET_FLAG_DETAIL);
wireless_dev->rd_status = rrddim_add(wireless_dev->st_status, "status", NULL, 1,
1, RRD_ALGORITHM_ABSOLUTE);
} else {
rrdset_next(wireless_dev->st_status);
}
rrddim_set_by_pointer(wireless_dev->st_status, wireless_dev->rd_status,
(collected_number)wireless_dev->status);
rrdset_done(wireless_dev->st_status);
}
if (likely(do_quality != CONFIG_BOOLEAN_NO)) {
wireless_dev->link = str2ld(procfile_lineword(ff, l, 2), NULL);
wireless_dev->level = str2ld(procfile_lineword(ff, l, 3), NULL);
wireless_dev->noise = str2ld(procfile_lineword(ff, l, 4), NULL);
if (unlikely(!wireless_dev->st_link)) {
wireless_dev->st_link = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_link,
NULL,
wireless_dev->name,
"wireless.link_quality",
"Overall quality of the link. This is an aggregate value, and depends on the driver and hardware.",
"value",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE + 1,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_link, RRDSET_FLAG_DETAIL);
wireless_dev->rd_link = rrddim_add(wireless_dev->st_link, "link_quality", NULL, 1, 1,
RRD_ALGORITHM_ABSOLUTE);
} else {
rrdset_next(wireless_dev->st_link);
}
if (unlikely(!wireless_dev->st_level)) {
wireless_dev->st_level = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_level,
NULL,
wireless_dev->name,
"wireless.signal_level",
"The signal level is the wireless signal power level received by the wireless client. The closer the value is to 0, the stronger the signal.",
"dBm",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE + 2,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_level, RRDSET_FLAG_DETAIL);
wireless_dev->rd_level = rrddim_add(wireless_dev->st_level, "signal_level", NULL, 1, 1,
RRD_ALGORITHM_ABSOLUTE);
} else {
rrdset_next(wireless_dev->st_level);
}
if (unlikely(!wireless_dev->st_noise)) {
wireless_dev->st_noise = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_noise,
NULL,
wireless_dev->name,
"wireless.noise_level",
"The noise level indicates the amount of background noise in your environment. The closer the value to 0, the greater the noise level.",
"dBm",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE + 3,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_noise, RRDSET_FLAG_DETAIL);
wireless_dev->rd_noise = rrddim_add(wireless_dev->st_noise, "noise_level", NULL, 1, 1,
RRD_ALGORITHM_ABSOLUTE);
} else {
rrdset_next(wireless_dev->st_noise);
}
rrddim_set_by_pointer(wireless_dev->st_link, wireless_dev->rd_link,
(collected_number)wireless_dev->link);
rrdset_done(wireless_dev->st_link);
rrddim_set_by_pointer(wireless_dev->st_level, wireless_dev->rd_level,
(collected_number)wireless_dev->level);
rrdset_done(wireless_dev->st_level);
rrddim_set_by_pointer(wireless_dev->st_noise, wireless_dev->rd_noise,
(collected_number)wireless_dev->noise);
rrdset_done(wireless_dev->st_noise);
}
if (likely(do_discarded_packets)) {
wireless_dev->nwid = str2kernel_uint_t(procfile_lineword(ff, l, 5));
wireless_dev->crypt = str2kernel_uint_t(procfile_lineword(ff, l, 6));
wireless_dev->frag = str2kernel_uint_t(procfile_lineword(ff, l, 7));
wireless_dev->retry = str2kernel_uint_t(procfile_lineword(ff, l, 8));
wireless_dev->misc = str2kernel_uint_t(procfile_lineword(ff, l, 9));
if (unlikely(!wireless_dev->st_discarded_packets)) {
wireless_dev->st_discarded_packets = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_discarded_packets,
NULL,
wireless_dev->name,
"wireless.discarded_packets",
"Packet discarded in the wireless adapter due to \"wireless\" specific problems.",
"packets/s",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE + 4,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_discarded_packets, RRDSET_FLAG_DETAIL);
wireless_dev->rd_nwid = rrddim_add(wireless_dev->st_discarded_packets, "nwid", NULL, 1,
1, RRD_ALGORITHM_INCREMENTAL);
wireless_dev->rd_crypt = rrddim_add(wireless_dev->st_discarded_packets, "crypt", NULL, 1,
1, RRD_ALGORITHM_INCREMENTAL);
wireless_dev->rd_frag = rrddim_add(wireless_dev->st_discarded_packets, "frag", NULL, 1,
1, RRD_ALGORITHM_INCREMENTAL);
wireless_dev->rd_retry = rrddim_add(wireless_dev->st_discarded_packets, "retry", NULL, 1,
1, RRD_ALGORITHM_INCREMENTAL);
wireless_dev->rd_misc = rrddim_add(wireless_dev->st_discarded_packets, "misc", NULL, 1,
1, RRD_ALGORITHM_INCREMENTAL);
} else {
rrdset_next(wireless_dev->st_discarded_packets);
}
rrddim_set_by_pointer(wireless_dev->st_discarded_packets, wireless_dev->rd_nwid,
(collected_number)wireless_dev->nwid);
rrddim_set_by_pointer(wireless_dev->st_discarded_packets, wireless_dev->rd_crypt,
(collected_number)wireless_dev->crypt);
rrddim_set_by_pointer(wireless_dev->st_discarded_packets, wireless_dev->rd_frag,
(collected_number)wireless_dev->frag);
rrddim_set_by_pointer(wireless_dev->st_discarded_packets, wireless_dev->rd_retry,
(collected_number)wireless_dev->retry);
rrddim_set_by_pointer(wireless_dev->st_discarded_packets, wireless_dev->rd_misc,
(collected_number)wireless_dev->misc);
rrdset_done(wireless_dev->st_discarded_packets);
}
if (likely(do_beacon)) {
wireless_dev->missed_beacon = str2kernel_uint_t(procfile_lineword(ff, l, 10));
if (unlikely(!wireless_dev->st_missed_beacon)) {
wireless_dev->st_missed_beacon = rrdset_create_localhost("wireless",
wireless_dev->chart_id_net_missed_beacon,
NULL,
wireless_dev->name,
"wireless.missed_beacons",
"Number of missed beacons.",
"frames/s",
PLUGIN_PROC_NAME,
PLUGIN_PROC_MODULE_NETWIRELESS_NAME,
NETDATA_CHART_PRIO_WIRELESS_IFACE + 5,
update_every,
RRDSET_TYPE_LINE);
rrdset_flag_set(wireless_dev->st_missed_beacon, RRDSET_FLAG_DETAIL);
wireless_dev->rd_missed_beacon = rrddim_add(wireless_dev->st_missed_beacon, "missed_beacons",
NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
} else {
rrdset_next(wireless_dev->st_missed_beacon);
}
rrddim_set_by_pointer(wireless_dev->st_missed_beacon, wireless_dev->rd_missed_beacon,
(collected_number)wireless_dev->missed_beacon);
rrdset_done(wireless_dev->st_missed_beacon);
}
wireless_dev->updated = timestamp;
}
netwireless_cleanup(×tamp);
return 0;
}