diff options
Diffstat (limited to 'collectors/proc.plugin/proc_net_stat_conntrack.c')
| -rw-r--r-- | collectors/proc.plugin/proc_net_stat_conntrack.c | 351 |
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; +} |