// 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 const RRDVAR_ACQUIRED *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_add_and_acquire(localhost, "tcp_mem_low"); tcp_mem_pressure_threshold = rrdvar_custom_host_variable_add_and_acquire(localhost, "tcp_mem_pressure"); tcp_mem_high_threshold = rrdvar_custom_host_variable_add_and_acquire(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 const RRDVAR_ACQUIRED *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_add_and_acquire(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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } 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 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { 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); } rrddim_set_by_pointer(st, rd_mem, (collected_number)sockstat_root.frag_memory); rrdset_done(st); } return 0; }