From 8d4f58e49b9dc7d3545651023a36729de773ad86 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:22:31 +0200 Subject: Adding upstream version 1.12.0. Signed-off-by: Daniel Baumann --- collectors/proc.plugin/proc_net_stat_synproxy.c | 185 ++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 collectors/proc.plugin/proc_net_stat_synproxy.c (limited to 'collectors/proc.plugin/proc_net_stat_synproxy.c') diff --git a/collectors/proc.plugin/proc_net_stat_synproxy.c b/collectors/proc.plugin/proc_net_stat_synproxy.c new file mode 100644 index 0000000..312ded5 --- /dev/null +++ b/collectors/proc.plugin/proc_net_stat_synproxy.c @@ -0,0 +1,185 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "plugin_proc.h" + +#define PLUGIN_PROC_MODULE_SYNPROXY_NAME "/proc/net/stat/synproxy" + +#define RRD_TYPE_NET_STAT_NETFILTER "netfilter" +#define RRD_TYPE_NET_STAT_SYNPROXY "synproxy" + +int do_proc_net_stat_synproxy(int update_every, usec_t dt) { + (void)dt; + + static int do_entries = -1, do_cookies = -1, do_syns = -1, do_reopened = -1; + static procfile *ff = NULL; + + if(unlikely(do_entries == -1)) { + do_entries = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY entries", CONFIG_BOOLEAN_AUTO); + do_cookies = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY cookies", CONFIG_BOOLEAN_AUTO); + do_syns = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY SYN received", CONFIG_BOOLEAN_AUTO); + do_reopened = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY connections reopened", CONFIG_BOOLEAN_AUTO); + } + + if(unlikely(!ff)) { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/stat/synproxy"); + ff = procfile_open(config_get("plugin:proc:/proc/net/stat/synproxy", "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 + + // make sure we have 3 lines + size_t lines = procfile_lines(ff), l; + if(unlikely(lines < 2)) { + error("/proc/net/stat/synproxy has %zu lines, expected no less than 2. Disabling it.", lines); + return 1; + } + + unsigned long long entries = 0, syn_received = 0, cookie_invalid = 0, cookie_valid = 0, cookie_retrans = 0, conn_reopened = 0; + + // synproxy gives its values per CPU + for(l = 1; l < lines ;l++) { + size_t words = procfile_linewords(ff, l); + if(unlikely(words < 6)) + continue; + + entries += strtoull(procfile_lineword(ff, l, 0), NULL, 16); + syn_received += strtoull(procfile_lineword(ff, l, 1), NULL, 16); + cookie_invalid += strtoull(procfile_lineword(ff, l, 2), NULL, 16); + cookie_valid += strtoull(procfile_lineword(ff, l, 3), NULL, 16); + cookie_retrans += strtoull(procfile_lineword(ff, l, 4), NULL, 16); + conn_reopened += strtoull(procfile_lineword(ff, l, 5), NULL, 16); + } + + unsigned long long events = entries + syn_received + cookie_invalid + cookie_valid + cookie_retrans + conn_reopened; + + // -------------------------------------------------------------------- + + if((do_entries == CONFIG_BOOLEAN_AUTO && events) || do_entries == CONFIG_BOOLEAN_YES) { + do_entries = CONFIG_BOOLEAN_YES; + + static RRDSET *st = NULL; + if(unlikely(!st)) { + st = rrdset_create_localhost( + RRD_TYPE_NET_STAT_NETFILTER + , RRD_TYPE_NET_STAT_SYNPROXY "_entries" + , NULL + , RRD_TYPE_NET_STAT_SYNPROXY + , NULL + , "SYNPROXY Entries Used" + , "entries" + , PLUGIN_PROC_NAME + , PLUGIN_PROC_MODULE_SYNPROXY_NAME + , NETDATA_CHART_PRIO_SYNPROXY_ENTRIES + , update_every + , RRDSET_TYPE_LINE + ); + + rrddim_add(st, "entries", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "entries", entries); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if((do_syns == CONFIG_BOOLEAN_AUTO && events) || do_syns == CONFIG_BOOLEAN_YES) { + do_syns = CONFIG_BOOLEAN_YES; + + static RRDSET *st = NULL; + if(unlikely(!st)) { + st = rrdset_create_localhost( + RRD_TYPE_NET_STAT_NETFILTER + , RRD_TYPE_NET_STAT_SYNPROXY "_syn_received" + , NULL + , RRD_TYPE_NET_STAT_SYNPROXY + , NULL + , "SYNPROXY SYN Packets received" + , "packets/s" + , PLUGIN_PROC_NAME + , PLUGIN_PROC_MODULE_SYNPROXY_NAME + , NETDATA_CHART_PRIO_SYNPROXY_SYN_RECEIVED + , update_every + , RRDSET_TYPE_LINE + ); + + rrddim_add(st, "received", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "received", syn_received); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if((do_reopened == CONFIG_BOOLEAN_AUTO && events) || do_reopened == CONFIG_BOOLEAN_YES) { + do_reopened = CONFIG_BOOLEAN_YES; + + static RRDSET *st = NULL; + if(unlikely(!st)) { + st = rrdset_create_localhost( + RRD_TYPE_NET_STAT_NETFILTER + , RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened" + , NULL + , RRD_TYPE_NET_STAT_SYNPROXY + , NULL + , "SYNPROXY Connections Reopened" + , "connections/s" + , PLUGIN_PROC_NAME + , PLUGIN_PROC_MODULE_SYNPROXY_NAME + , NETDATA_CHART_PRIO_SYNPROXY_CONN_OPEN + , update_every + , RRDSET_TYPE_LINE + ); + + rrddim_add(st, "reopened", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "reopened", conn_reopened); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if((do_cookies == CONFIG_BOOLEAN_AUTO && events) || do_cookies == CONFIG_BOOLEAN_YES) { + do_cookies = CONFIG_BOOLEAN_YES; + + static RRDSET *st = NULL; + if(unlikely(!st)) { + st = rrdset_create_localhost( + RRD_TYPE_NET_STAT_NETFILTER + , RRD_TYPE_NET_STAT_SYNPROXY "_cookies" + , NULL + , RRD_TYPE_NET_STAT_SYNPROXY + , NULL + , "SYNPROXY TCP Cookies" + , "cookies/s" + , PLUGIN_PROC_NAME + , PLUGIN_PROC_MODULE_SYNPROXY_NAME + , NETDATA_CHART_PRIO_SYNPROXY_COOKIES + , update_every + , RRDSET_TYPE_LINE + ); + + rrddim_add(st, "valid", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + rrddim_add(st, "invalid", NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL); + rrddim_add(st, "retransmits", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(st); + + rrddim_set(st, "valid", cookie_valid); + rrddim_set(st, "invalid", cookie_invalid); + rrddim_set(st, "retransmits", cookie_retrans); + rrdset_done(st); + } + + return 0; +} -- cgit v1.2.3