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path: root/collectors/proc.plugin/proc_net_sockstat.c
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Diffstat (limited to 'collectors/proc.plugin/proc_net_sockstat.c')
-rw-r--r--collectors/proc.plugin/proc_net_sockstat.c518
1 files changed, 518 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_net_sockstat.c b/collectors/proc.plugin/proc_net_sockstat.c
new file mode 100644
index 0000000..ff9cc52
--- /dev/null
+++ b/collectors/proc.plugin/proc_net_sockstat.c
@@ -0,0 +1,518 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME "/proc/net/sockstat"
+
+static struct proc_net_sockstat {
+ kernel_uint_t sockets_used;
+
+ kernel_uint_t tcp_inuse;
+ kernel_uint_t tcp_orphan;
+ kernel_uint_t tcp_tw;
+ kernel_uint_t tcp_alloc;
+ kernel_uint_t tcp_mem;
+
+ kernel_uint_t udp_inuse;
+ kernel_uint_t udp_mem;
+
+ kernel_uint_t udplite_inuse;
+
+ kernel_uint_t raw_inuse;
+
+ kernel_uint_t frag_inuse;
+ kernel_uint_t frag_memory;
+} sockstat_root = { 0 };
+
+
+static int read_tcp_mem(void) {
+ static char *filename = NULL;
+ static RRDVAR *tcp_mem_low_threshold = NULL,
+ *tcp_mem_pressure_threshold = NULL,
+ *tcp_mem_high_threshold = NULL;
+
+ if(unlikely(!tcp_mem_low_threshold)) {
+ tcp_mem_low_threshold = rrdvar_custom_host_variable_create(localhost, "tcp_mem_low");
+ tcp_mem_pressure_threshold = rrdvar_custom_host_variable_create(localhost, "tcp_mem_pressure");
+ tcp_mem_high_threshold = rrdvar_custom_host_variable_create(localhost, "tcp_mem_high");
+ }
+
+ if(unlikely(!filename)) {
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%s/proc/sys/net/ipv4/tcp_mem", netdata_configured_host_prefix);
+ filename = strdupz(buffer);
+ }
+
+ char buffer[200 + 1], *start, *end;
+ if(read_file(filename, buffer, 200) != 0) return 1;
+ buffer[200] = '\0';
+
+ unsigned long long low = 0, pressure = 0, high = 0;
+
+ start = buffer;
+ low = strtoull(start, &end, 10);
+
+ start = end;
+ pressure = strtoull(start, &end, 10);
+
+ start = end;
+ high = strtoull(start, &end, 10);
+
+ // fprintf(stderr, "TCP MEM low = %llu, pressure = %llu, high = %llu\n", low, pressure, high);
+
+ rrdvar_custom_host_variable_set(localhost, tcp_mem_low_threshold, low * sysconf(_SC_PAGESIZE) / 1024.0);
+ rrdvar_custom_host_variable_set(localhost, tcp_mem_pressure_threshold, pressure * sysconf(_SC_PAGESIZE) / 1024.0);
+ rrdvar_custom_host_variable_set(localhost, tcp_mem_high_threshold, high * sysconf(_SC_PAGESIZE) / 1024.0);
+
+ return 0;
+}
+
+static kernel_uint_t read_tcp_max_orphans(void) {
+ static char *filename = NULL;
+ static RRDVAR *tcp_max_orphans_var = NULL;
+
+ if(unlikely(!filename)) {
+ char buffer[FILENAME_MAX + 1];
+ snprintfz(buffer, FILENAME_MAX, "%s/proc/sys/net/ipv4/tcp_max_orphans", netdata_configured_host_prefix);
+ filename = strdupz(buffer);
+ }
+
+ unsigned long long tcp_max_orphans = 0;
+ if(read_single_number_file(filename, &tcp_max_orphans) == 0) {
+
+ if(unlikely(!tcp_max_orphans_var))
+ tcp_max_orphans_var = rrdvar_custom_host_variable_create(localhost, "tcp_max_orphans");
+
+ rrdvar_custom_host_variable_set(localhost, tcp_max_orphans_var, tcp_max_orphans);
+ return tcp_max_orphans;
+ }
+
+ return 0;
+}
+
+int do_proc_net_sockstat(int update_every, usec_t dt) {
+ (void)dt;
+
+ static procfile *ff = NULL;
+
+ static uint32_t hash_sockets = 0,
+ hash_raw = 0,
+ hash_frag = 0,
+ hash_tcp = 0,
+ hash_udp = 0,
+ hash_udplite = 0;
+
+ static long long update_constants_every = 60, update_constants_count = 0;
+
+ static ARL_BASE *arl_sockets = NULL;
+ static ARL_BASE *arl_tcp = NULL;
+ static ARL_BASE *arl_udp = NULL;
+ static ARL_BASE *arl_udplite = NULL;
+ static ARL_BASE *arl_raw = NULL;
+ static ARL_BASE *arl_frag = NULL;
+
+ static int do_sockets = -1, do_tcp_sockets = -1, do_tcp_mem = -1, do_udp_sockets = -1, do_udp_mem = -1, do_udplite_sockets = -1, do_raw_sockets = -1, do_frag_sockets = -1, do_frag_mem = -1;
+
+ static char *keys[7] = { NULL };
+ static uint32_t hashes[7] = { 0 };
+ static ARL_BASE *bases[7] = { NULL };
+
+ if(unlikely(!arl_sockets)) {
+ do_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 sockets", CONFIG_BOOLEAN_AUTO);
+ do_tcp_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 TCP sockets", CONFIG_BOOLEAN_AUTO);
+ do_tcp_mem = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 TCP memory", CONFIG_BOOLEAN_AUTO);
+ do_udp_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 UDP sockets", CONFIG_BOOLEAN_AUTO);
+ do_udp_mem = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 UDP memory", CONFIG_BOOLEAN_AUTO);
+ do_udplite_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 UDPLITE sockets", CONFIG_BOOLEAN_AUTO);
+ do_raw_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 RAW sockets", CONFIG_BOOLEAN_AUTO);
+ do_frag_sockets = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 FRAG sockets", CONFIG_BOOLEAN_AUTO);
+ do_frag_mem = config_get_boolean_ondemand("plugin:proc:/proc/net/sockstat", "ipv4 FRAG memory", CONFIG_BOOLEAN_AUTO);
+
+ update_constants_every = config_get_number("plugin:proc:/proc/net/sockstat", "update constants every", update_constants_every);
+ update_constants_count = update_constants_every;
+
+ arl_sockets = arl_create("sockstat/sockets", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_sockets, "used", &sockstat_root.sockets_used);
+
+ arl_tcp = arl_create("sockstat/TCP", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_tcp, "inuse", &sockstat_root.tcp_inuse);
+ arl_expect(arl_tcp, "orphan", &sockstat_root.tcp_orphan);
+ arl_expect(arl_tcp, "tw", &sockstat_root.tcp_tw);
+ arl_expect(arl_tcp, "alloc", &sockstat_root.tcp_alloc);
+ arl_expect(arl_tcp, "mem", &sockstat_root.tcp_mem);
+
+ arl_udp = arl_create("sockstat/UDP", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_udp, "inuse", &sockstat_root.udp_inuse);
+ arl_expect(arl_udp, "mem", &sockstat_root.udp_mem);
+
+ arl_udplite = arl_create("sockstat/UDPLITE", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_udplite, "inuse", &sockstat_root.udplite_inuse);
+
+ arl_raw = arl_create("sockstat/RAW", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_raw, "inuse", &sockstat_root.raw_inuse);
+
+ arl_frag = arl_create("sockstat/FRAG", arl_callback_str2kernel_uint_t, 60);
+ arl_expect(arl_frag, "inuse", &sockstat_root.frag_inuse);
+ arl_expect(arl_frag, "memory", &sockstat_root.frag_memory);
+
+ hash_sockets = simple_hash("sockets");
+ hash_tcp = simple_hash("TCP");
+ hash_udp = simple_hash("UDP");
+ hash_udplite = simple_hash("UDPLITE");
+ hash_raw = simple_hash("RAW");
+ hash_frag = simple_hash("FRAG");
+
+ keys[0] = "sockets"; hashes[0] = hash_sockets; bases[0] = arl_sockets;
+ keys[1] = "TCP"; hashes[1] = hash_tcp; bases[1] = arl_tcp;
+ keys[2] = "UDP"; hashes[2] = hash_udp; bases[2] = arl_udp;
+ keys[3] = "UDPLITE"; hashes[3] = hash_udplite; bases[3] = arl_udplite;
+ keys[4] = "RAW"; hashes[4] = hash_raw; bases[4] = arl_raw;
+ keys[5] = "FRAG"; hashes[5] = hash_frag; bases[5] = arl_frag;
+ keys[6] = NULL; // terminator
+ }
+
+ update_constants_count += update_every;
+ if(unlikely(update_constants_count > update_constants_every)) {
+ read_tcp_max_orphans();
+ read_tcp_mem();
+ update_constants_count = 0;
+ }
+
+ if(unlikely(!ff)) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/sockstat");
+ ff = procfile_open(config_get("plugin:proc:/proc/net/sockstat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!ff)) return 1;
+ }
+
+ ff = procfile_readall(ff);
+ if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
+
+ size_t lines = procfile_lines(ff), l;
+
+ for(l = 0; l < lines ;l++) {
+ size_t words = procfile_linewords(ff, l);
+ char *key = procfile_lineword(ff, l, 0);
+ uint32_t hash = simple_hash(key);
+
+ int k;
+ for(k = 0; keys[k] ; k++) {
+ if(unlikely(hash == hashes[k] && strcmp(key, keys[k]) == 0)) {
+ // fprintf(stderr, "KEY: '%s', l=%zu, w=1, words=%zu\n", key, l, words);
+ ARL_BASE *arl = bases[k];
+ arl_begin(arl);
+ size_t w = 1;
+
+ while(w + 1 < words) {
+ char *name = procfile_lineword(ff, l, w); w++;
+ char *value = procfile_lineword(ff, l, w); w++;
+ // fprintf(stderr, " > NAME '%s', VALUE '%s', l=%zu, w=%zu, words=%zu\n", name, value, l, w, words);
+ if(unlikely(arl_check(arl, name, value) != 0))
+ break;
+ }
+
+ break;
+ }
+ }
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_sockets == CONFIG_BOOLEAN_YES || (do_sockets == CONFIG_BOOLEAN_AUTO && sockstat_root.sockets_used)) {
+ do_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_used = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_sockets"
+ , NULL
+ , "sockets"
+ , NULL
+ , "IPv4 Sockets Used"
+ , "sockets"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_SOCKETS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_used = rrddim_add(st, "used", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_used, (collected_number)sockstat_root.sockets_used);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_tcp_sockets == CONFIG_BOOLEAN_YES || (do_tcp_sockets == CONFIG_BOOLEAN_AUTO && (sockstat_root.tcp_inuse || sockstat_root.tcp_orphan || sockstat_root.tcp_tw || sockstat_root.tcp_alloc))) {
+ do_tcp_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_inuse = NULL,
+ *rd_orphan = NULL,
+ *rd_timewait = NULL,
+ *rd_alloc = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_tcp_sockets"
+ , NULL
+ , "tcp"
+ , NULL
+ , "IPv4 TCP Sockets"
+ , "sockets"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_TCP_SOCKETS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_alloc = rrddim_add(st, "alloc", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rd_orphan = rrddim_add(st, "orphan", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rd_inuse = rrddim_add(st, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rd_timewait = rrddim_add(st, "timewait", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inuse, (collected_number)sockstat_root.tcp_inuse);
+ rrddim_set_by_pointer(st, rd_orphan, (collected_number)sockstat_root.tcp_orphan);
+ rrddim_set_by_pointer(st, rd_timewait, (collected_number)sockstat_root.tcp_tw);
+ rrddim_set_by_pointer(st, rd_alloc, (collected_number)sockstat_root.tcp_alloc);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_tcp_mem == CONFIG_BOOLEAN_YES || (do_tcp_mem == CONFIG_BOOLEAN_AUTO && sockstat_root.tcp_mem)) {
+ do_tcp_mem = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_mem = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_tcp_mem"
+ , NULL
+ , "tcp"
+ , NULL
+ , "IPv4 TCP Sockets Memory"
+ , "KiB"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_TCP_MEM
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_mem = rrddim_add(st, "mem", NULL, sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_mem, (collected_number)sockstat_root.tcp_mem);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_udp_sockets == CONFIG_BOOLEAN_YES || (do_udp_sockets == CONFIG_BOOLEAN_AUTO && sockstat_root.udp_inuse)) {
+ do_udp_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_inuse = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_udp_sockets"
+ , NULL
+ , "udp"
+ , NULL
+ , "IPv4 UDP Sockets"
+ , "sockets"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_UDP
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_inuse = rrddim_add(st, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inuse, (collected_number)sockstat_root.udp_inuse);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_udp_mem == CONFIG_BOOLEAN_YES || (do_udp_mem == CONFIG_BOOLEAN_AUTO && sockstat_root.udp_mem)) {
+ do_udp_mem = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_mem = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_udp_mem"
+ , NULL
+ , "udp"
+ , NULL
+ , "IPv4 UDP Sockets Memory"
+ , "KiB"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_UDP_MEM
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_mem = rrddim_add(st, "mem", NULL, sysconf(_SC_PAGESIZE), 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_mem, (collected_number)sockstat_root.udp_mem);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_udplite_sockets == CONFIG_BOOLEAN_YES || (do_udplite_sockets == CONFIG_BOOLEAN_AUTO && sockstat_root.udplite_inuse)) {
+ do_udplite_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_inuse = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_udplite_sockets"
+ , NULL
+ , "udplite"
+ , NULL
+ , "IPv4 UDPLITE Sockets"
+ , "sockets"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_UDPLITE
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_inuse = rrddim_add(st, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inuse, (collected_number)sockstat_root.udplite_inuse);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_raw_sockets == CONFIG_BOOLEAN_YES || (do_raw_sockets == CONFIG_BOOLEAN_AUTO && sockstat_root.raw_inuse)) {
+ do_raw_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_inuse = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_raw_sockets"
+ , NULL
+ , "raw"
+ , NULL
+ , "IPv4 RAW Sockets"
+ , "sockets"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_RAW
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_inuse = rrddim_add(st, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inuse, (collected_number)sockstat_root.raw_inuse);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_frag_sockets == CONFIG_BOOLEAN_YES || (do_frag_sockets == CONFIG_BOOLEAN_AUTO && sockstat_root.frag_inuse)) {
+ do_frag_sockets = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_inuse = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_frag_sockets"
+ , NULL
+ , "fragments"
+ , NULL
+ , "IPv4 FRAG Sockets"
+ , "fragments"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_FRAGMENTS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_inuse = rrddim_add(st, "inuse", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inuse, (collected_number)sockstat_root.frag_inuse);
+ rrdset_done(st);
+ }
+
+ // ------------------------------------------------------------------------
+
+ if(do_frag_mem == CONFIG_BOOLEAN_YES || (do_frag_mem == CONFIG_BOOLEAN_AUTO && sockstat_root.frag_memory)) {
+ do_frag_mem = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_mem = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ "ipv4"
+ , "sockstat_frag_mem"
+ , NULL
+ , "fragments"
+ , NULL
+ , "IPv4 FRAG Sockets Memory"
+ , "KiB"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_NET_SOCKSTAT_NAME
+ , NETDATA_CHART_PRIO_IPV4_FRAGMENTS_MEM
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_mem = rrddim_add(st, "mem", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_mem, (collected_number)sockstat_root.frag_memory);
+ rrdset_done(st);
+ }
+
+ return 0;
+}
+