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Diffstat (limited to 'collectors/proc.plugin/proc_net_stat_conntrack.c')
-rw-r--r--collectors/proc.plugin/proc_net_stat_conntrack.c351
1 files changed, 351 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_net_stat_conntrack.c b/collectors/proc.plugin/proc_net_stat_conntrack.c
new file mode 100644
index 0000000..642e33f
--- /dev/null
+++ b/collectors/proc.plugin/proc_net_stat_conntrack.c
@@ -0,0 +1,351 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
+#define RRD_TYPE_NET_STAT_CONNTRACK "conntrack"
+#define PLUGIN_PROC_MODULE_CONNTRACK_NAME "/proc/net/stat/nf_conntrack"
+
+int do_proc_net_stat_conntrack(int update_every, usec_t dt) {
+ static procfile *ff = NULL;
+ static int do_sockets = -1, do_new = -1, do_changes = -1, do_expect = -1, do_search = -1, do_errors = -1;
+ static usec_t get_max_every = 10 * USEC_PER_SEC, usec_since_last_max = 0;
+ static int read_full = 1;
+ static char *nf_conntrack_filename, *nf_conntrack_count_filename, *nf_conntrack_max_filename;
+ static RRDVAR *rrdvar_max = NULL;
+
+ unsigned long long aentries = 0, asearched = 0, afound = 0, anew = 0, ainvalid = 0, aignore = 0, adelete = 0, adelete_list = 0,
+ ainsert = 0, ainsert_failed = 0, adrop = 0, aearly_drop = 0, aicmp_error = 0, aexpect_new = 0, aexpect_create = 0, aexpect_delete = 0, asearch_restart = 0;
+
+ if(unlikely(do_sockets == -1)) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/stat/nf_conntrack");
+ nf_conntrack_filename = config_get("plugin:proc:/proc/net/stat/nf_conntrack", "filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/sys/net/netfilter/nf_conntrack_max");
+ nf_conntrack_max_filename = config_get("plugin:proc:/proc/sys/net/netfilter/nf_conntrack_max", "filename to monitor", filename);
+ usec_since_last_max = get_max_every = config_get_number("plugin:proc:/proc/sys/net/netfilter/nf_conntrack_max", "read every seconds", 10) * USEC_PER_SEC;
+
+ read_full = 1;
+ ff = procfile_open(nf_conntrack_filename, " \t:", PROCFILE_FLAG_DEFAULT);
+ if(!ff) read_full = 0;
+
+ do_new = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter new connections", read_full);
+ do_changes = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection changes", read_full);
+ do_expect = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection expectations", read_full);
+ do_search = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connection searches", read_full);
+ do_errors = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter errors", read_full);
+
+ do_sockets = 1;
+ if(!read_full) {
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/sys/net/netfilter/nf_conntrack_count");
+ nf_conntrack_count_filename = config_get("plugin:proc:/proc/sys/net/netfilter/nf_conntrack_count", "filename to monitor", filename);
+
+ if(read_single_number_file(nf_conntrack_count_filename, &aentries))
+ do_sockets = 0;
+ }
+
+ do_sockets = config_get_boolean("plugin:proc:/proc/net/stat/nf_conntrack", "netfilter connections", do_sockets);
+
+ if(!do_sockets && !read_full)
+ return 1;
+
+ rrdvar_max = rrdvar_custom_host_variable_create(localhost, "netfilter_conntrack_max");
+ }
+
+ if(likely(read_full)) {
+ if(unlikely(!ff)) {
+ ff = procfile_open(nf_conntrack_filename, " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!ff))
+ return 0; // we return 0, so that we will retry to open it next time
+ }
+
+ 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 = 1; l < lines ;l++) {
+ size_t words = procfile_linewords(ff, l);
+ if(unlikely(words < 17)) {
+ if(unlikely(words)) error("Cannot read /proc/net/stat/nf_conntrack line. Expected 17 params, read %zu.", words);
+ continue;
+ }
+
+ unsigned long long tentries = 0, tsearched = 0, tfound = 0, tnew = 0, tinvalid = 0, tignore = 0, tdelete = 0, tdelete_list = 0, tinsert = 0, tinsert_failed = 0, tdrop = 0, tearly_drop = 0, ticmp_error = 0, texpect_new = 0, texpect_create = 0, texpect_delete = 0, tsearch_restart = 0;
+
+ tentries = strtoull(procfile_lineword(ff, l, 0), NULL, 16);
+ tsearched = strtoull(procfile_lineword(ff, l, 1), NULL, 16);
+ tfound = strtoull(procfile_lineword(ff, l, 2), NULL, 16);
+ tnew = strtoull(procfile_lineword(ff, l, 3), NULL, 16);
+ tinvalid = strtoull(procfile_lineword(ff, l, 4), NULL, 16);
+ tignore = strtoull(procfile_lineword(ff, l, 5), NULL, 16);
+ tdelete = strtoull(procfile_lineword(ff, l, 6), NULL, 16);
+ tdelete_list = strtoull(procfile_lineword(ff, l, 7), NULL, 16);
+ tinsert = strtoull(procfile_lineword(ff, l, 8), NULL, 16);
+ tinsert_failed = strtoull(procfile_lineword(ff, l, 9), NULL, 16);
+ tdrop = strtoull(procfile_lineword(ff, l, 10), NULL, 16);
+ tearly_drop = strtoull(procfile_lineword(ff, l, 11), NULL, 16);
+ ticmp_error = strtoull(procfile_lineword(ff, l, 12), NULL, 16);
+ texpect_new = strtoull(procfile_lineword(ff, l, 13), NULL, 16);
+ texpect_create = strtoull(procfile_lineword(ff, l, 14), NULL, 16);
+ texpect_delete = strtoull(procfile_lineword(ff, l, 15), NULL, 16);
+ tsearch_restart = strtoull(procfile_lineword(ff, l, 16), NULL, 16);
+
+ if(unlikely(!aentries)) aentries = tentries;
+
+ // sum all the cpus together
+ asearched += tsearched; // conntrack.search
+ afound += tfound; // conntrack.search
+ anew += tnew; // conntrack.new
+ ainvalid += tinvalid; // conntrack.new
+ aignore += tignore; // conntrack.new
+ adelete += tdelete; // conntrack.changes
+ adelete_list += tdelete_list; // conntrack.changes
+ ainsert += tinsert; // conntrack.changes
+ ainsert_failed += tinsert_failed; // conntrack.errors
+ adrop += tdrop; // conntrack.errors
+ aearly_drop += tearly_drop; // conntrack.errors
+ aicmp_error += ticmp_error; // conntrack.errors
+ aexpect_new += texpect_new; // conntrack.expect
+ aexpect_create += texpect_create; // conntrack.expect
+ aexpect_delete += texpect_delete; // conntrack.expect
+ asearch_restart += tsearch_restart; // conntrack.search
+ }
+ }
+ else {
+ if(unlikely(read_single_number_file(nf_conntrack_count_filename, &aentries)))
+ return 0; // we return 0, so that we will retry to open it next time
+ }
+
+ usec_since_last_max += dt;
+ if(unlikely(rrdvar_max && usec_since_last_max >= get_max_every)) {
+ usec_since_last_max = 0;
+
+ unsigned long long max;
+ if(likely(!read_single_number_file(nf_conntrack_max_filename, &max)))
+ rrdvar_custom_host_variable_set(localhost, rrdvar_max, max);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_sockets) {
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_connections = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_sockets"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker Connections"
+ , "active connections"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_SOCKETS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_connections = rrddim_add(st, "connections", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_connections, aentries);
+ rrdset_done(st);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_new) {
+ static RRDSET *st = NULL;
+ static RRDDIM
+ *rd_new = NULL,
+ *rd_ignore = NULL,
+ *rd_invalid = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_new"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker New Connections"
+ , "connections/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_NEW
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_new = rrddim_add(st, "new", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_ignore = rrddim_add(st, "ignore", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_invalid = rrddim_add(st, "invalid", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_new, anew);
+ rrddim_set_by_pointer(st, rd_ignore, aignore);
+ rrddim_set_by_pointer(st, rd_invalid, ainvalid);
+ rrdset_done(st);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_changes) {
+ static RRDSET *st = NULL;
+ static RRDDIM
+ *rd_inserted = NULL,
+ *rd_deleted = NULL,
+ *rd_delete_list = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_changes"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker Changes"
+ , "changes/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_CHANGES
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+ rd_inserted = rrddim_add(st, "inserted", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_deleted = rrddim_add(st, "deleted", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_delete_list = rrddim_add(st, "delete_list", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_inserted, ainsert);
+ rrddim_set_by_pointer(st, rd_deleted, adelete);
+ rrddim_set_by_pointer(st, rd_delete_list, adelete_list);
+ rrdset_done(st);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_expect) {
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_created = NULL,
+ *rd_deleted = NULL,
+ *rd_new = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_expect"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker Expectations"
+ , "expectations/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_EXPECT
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+ rd_created = rrddim_add(st, "created", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_deleted = rrddim_add(st, "deleted", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_new = rrddim_add(st, "new", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_created, aexpect_create);
+ rrddim_set_by_pointer(st, rd_deleted, aexpect_delete);
+ rrddim_set_by_pointer(st, rd_new, aexpect_new);
+ rrdset_done(st);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_search) {
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_searched = NULL,
+ *rd_restarted = NULL,
+ *rd_found = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_search"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker Searches"
+ , "searches/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_SEARCH
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+ rd_searched = rrddim_add(st, "searched", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_restarted = rrddim_add(st, "restarted", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_found = rrddim_add(st, "found", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_searched, asearched);
+ rrddim_set_by_pointer(st, rd_restarted, asearch_restart);
+ rrddim_set_by_pointer(st, rd_found, afound);
+ rrdset_done(st);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(do_errors) {
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_icmp_error = NULL,
+ *rd_insert_failed = NULL,
+ *rd_drop = NULL,
+ *rd_early_drop = NULL;
+
+ if(unlikely(!st)) {
+ st = rrdset_create_localhost(
+ RRD_TYPE_NET_STAT_NETFILTER
+ , RRD_TYPE_NET_STAT_CONNTRACK "_errors"
+ , NULL
+ , RRD_TYPE_NET_STAT_CONNTRACK
+ , NULL
+ , "Connection Tracker Errors"
+ , "events/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_CONNTRACK_NAME
+ , NETDATA_CHART_PRIO_NETFILTER_ERRORS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
+
+ rd_icmp_error = rrddim_add(st, "icmp_error", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_insert_failed = rrddim_add(st, "insert_failed", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_drop = rrddim_add(st, "drop", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rd_early_drop = rrddim_add(st, "early_drop", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st);
+
+ rrddim_set_by_pointer(st, rd_icmp_error, aicmp_error);
+ rrddim_set_by_pointer(st, rd_insert_failed, ainsert_failed);
+ rrddim_set_by_pointer(st, rd_drop, adrop);
+ rrddim_set_by_pointer(st, rd_early_drop, aearly_drop);
+ rrdset_done(st);
+ }
+
+ return 0;
+}