Adding upstream version 1.29.3.upstream/1.29.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 869 insertions, 0 deletions

diff --git a/collectors/proc.plugin/proc_net_netstat.c b/collectors/proc.plugin/proc_net_netstat.c
new file mode 100644
index 0000000..ab8206b
--- /dev/null
+++ b/collectors/proc.plugin/proc_net_netstat.c
@@ -0,0 +1,869 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define RRD_TYPE_NET_NETSTAT "ip"
+#define PLUGIN_PROC_MODULE_NETSTAT_NAME "/proc/net/netstat"
+#define CONFIG_SECTION_PLUGIN_PROC_NETSTAT "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_NETSTAT_NAME
+
+unsigned long long tcpext_TCPSynRetrans = 0;
+
+static void parse_line_pair(procfile *ff, ARL_BASE *base, size_t header_line, size_t values_line) {
+    size_t hwords = procfile_linewords(ff, header_line);
+    size_t vwords = procfile_linewords(ff, values_line);
+    size_t w;
+
+    if(unlikely(vwords > hwords)) {
+        error("File /proc/net/netstat on header line %zu has %zu words, but on value line %zu has %zu words.", header_line, hwords, values_line, vwords);
+        vwords = hwords;
+    }
+
+    for(w = 1; w < vwords ;w++) {
+        if(unlikely(arl_check(base, procfile_lineword(ff, header_line, w), procfile_lineword(ff, values_line, w))))
+            break;
+    }
+}
+
+int do_proc_net_netstat(int update_every, usec_t dt) {
+    (void)dt;
+
+    static int do_bandwidth = -1, do_inerrors = -1, do_mcast = -1, do_bcast = -1, do_mcast_p = -1, do_bcast_p = -1, do_ecn = -1, \
+        do_tcpext_reorder = -1, do_tcpext_syscookies = -1, do_tcpext_ofo = -1, do_tcpext_connaborts = -1, do_tcpext_memory = -1,
+        do_tcpext_syn_queue = -1, do_tcpext_accept_queue = -1;
+
+    static uint32_t hash_ipext = 0, hash_tcpext = 0;
+    static procfile *ff = NULL;
+
+    static ARL_BASE *arl_tcpext = NULL;
+    static ARL_BASE *arl_ipext = NULL;
+
+    // --------------------------------------------------------------------
+    // IP
+
+    // IP bandwidth
+    static unsigned long long ipext_InOctets = 0;
+    static unsigned long long ipext_OutOctets = 0;
+
+    // IP input errors
+    static unsigned long long ipext_InNoRoutes = 0;
+    static unsigned long long ipext_InTruncatedPkts = 0;
+    static unsigned long long ipext_InCsumErrors = 0;
+
+    // IP multicast bandwidth
+    static unsigned long long ipext_InMcastOctets = 0;
+    static unsigned long long ipext_OutMcastOctets = 0;
+
+    // IP multicast packets
+    static unsigned long long ipext_InMcastPkts = 0;
+    static unsigned long long ipext_OutMcastPkts = 0;
+
+    // IP broadcast bandwidth
+    static unsigned long long ipext_InBcastOctets = 0;
+    static unsigned long long ipext_OutBcastOctets = 0;
+
+    // IP broadcast packets
+    static unsigned long long ipext_InBcastPkts = 0;
+    static unsigned long long ipext_OutBcastPkts = 0;
+
+    // IP ECN
+    static unsigned long long ipext_InNoECTPkts = 0;
+    static unsigned long long ipext_InECT1Pkts = 0;
+    static unsigned long long ipext_InECT0Pkts = 0;
+    static unsigned long long ipext_InCEPkts = 0;
+
+    // --------------------------------------------------------------------
+    // IP TCP
+
+    // IP TCP Reordering
+    static unsigned long long tcpext_TCPRenoReorder = 0;
+    static unsigned long long tcpext_TCPFACKReorder = 0;
+    static unsigned long long tcpext_TCPSACKReorder = 0;
+    static unsigned long long tcpext_TCPTSReorder = 0;
+
+    // IP TCP SYN Cookies
+    static unsigned long long tcpext_SyncookiesSent = 0;
+    static unsigned long long tcpext_SyncookiesRecv = 0;
+    static unsigned long long tcpext_SyncookiesFailed = 0;
+
+    // IP TCP Out Of Order Queue
+    // http://www.spinics.net/lists/netdev/msg204696.html
+    static unsigned long long tcpext_TCPOFOQueue = 0; // Number of packets queued in OFO queue
+    static unsigned long long tcpext_TCPOFODrop = 0;  // Number of packets meant to be queued in OFO but dropped because socket rcvbuf limit hit.
+    static unsigned long long tcpext_TCPOFOMerge = 0; // Number of packets in OFO that were merged with other packets.
+    static unsigned long long tcpext_OfoPruned = 0;   // packets dropped from out-of-order queue because of socket buffer overrun
+
+    // IP TCP connection resets
+    // https://github.com/ecki/net-tools/blob/bd8bceaed2311651710331a7f8990c3e31be9840/statistics.c
+    static unsigned long long tcpext_TCPAbortOnData = 0;    // connections reset due to unexpected data
+    static unsigned long long tcpext_TCPAbortOnClose = 0;   // connections reset due to early user close
+    static unsigned long long tcpext_TCPAbortOnMemory = 0;  // connections aborted due to memory pressure
+    static unsigned long long tcpext_TCPAbortOnTimeout = 0; // connections aborted due to timeout
+    static unsigned long long tcpext_TCPAbortOnLinger = 0;  // connections aborted after user close in linger timeout
+    static unsigned long long tcpext_TCPAbortFailed = 0;    // times unable to send RST due to no memory
+
+    // https://perfchron.com/2015/12/26/investigating-linux-network-issues-with-netstat-and-nstat/
+    static unsigned long long tcpext_ListenOverflows = 0;   // times the listen queue of a socket overflowed
+    static unsigned long long tcpext_ListenDrops = 0;       // SYNs to LISTEN sockets ignored
+
+    // IP TCP memory pressures
+    static unsigned long long tcpext_TCPMemoryPressures = 0;
+
+    static unsigned long long tcpext_TCPReqQFullDrop = 0;
+    static unsigned long long tcpext_TCPReqQFullDoCookies = 0;
+
+    // shared: tcpext_TCPSynRetrans
+
+
+    if(unlikely(!arl_ipext)) {
+        hash_ipext = simple_hash("IpExt");
+        hash_tcpext = simple_hash("TcpExt");
+
+        do_bandwidth = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_inerrors  = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "input errors", CONFIG_BOOLEAN_AUTO);
+        do_mcast     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "multicast bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_bcast     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "broadcast bandwidth", CONFIG_BOOLEAN_AUTO);
+        do_mcast_p   = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "multicast packets", CONFIG_BOOLEAN_AUTO);
+        do_bcast_p   = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "broadcast packets", CONFIG_BOOLEAN_AUTO);
+        do_ecn       = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "ECN packets", CONFIG_BOOLEAN_AUTO);
+
+        do_tcpext_reorder    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP reorders", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_syscookies = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP SYN cookies", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_ofo        = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP out-of-order queue", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_connaborts = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP connection aborts", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_memory     = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP memory pressures", CONFIG_BOOLEAN_AUTO);
+
+        do_tcpext_syn_queue    = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP SYN queue", CONFIG_BOOLEAN_AUTO);
+        do_tcpext_accept_queue = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "TCP accept queue", CONFIG_BOOLEAN_AUTO);
+
+        arl_ipext  = arl_create("netstat/ipext", NULL, 60);
+        arl_tcpext = arl_create("netstat/tcpext", NULL, 60);
+
+        // --------------------------------------------------------------------
+        // IP
+
+        if(do_bandwidth != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InOctets",  &ipext_InOctets);
+            arl_expect(arl_ipext, "OutOctets", &ipext_OutOctets);
+        }
+
+        if(do_inerrors != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InNoRoutes",      &ipext_InNoRoutes);
+            arl_expect(arl_ipext, "InTruncatedPkts", &ipext_InTruncatedPkts);
+            arl_expect(arl_ipext, "InCsumErrors",    &ipext_InCsumErrors);
+        }
+
+        if(do_mcast != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InMcastOctets", &ipext_InMcastOctets);
+            arl_expect(arl_ipext, "OutMcastOctets", &ipext_OutMcastOctets);
+        }
+
+        if(do_mcast_p != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InMcastPkts",  &ipext_InMcastPkts);
+            arl_expect(arl_ipext, "OutMcastPkts", &ipext_OutMcastPkts);
+        }
+
+        if(do_bcast != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InBcastPkts",  &ipext_InBcastPkts);
+            arl_expect(arl_ipext, "OutBcastPkts", &ipext_OutBcastPkts);
+        }
+
+        if(do_bcast_p != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InBcastOctets",  &ipext_InBcastOctets);
+            arl_expect(arl_ipext, "OutBcastOctets", &ipext_OutBcastOctets);
+        }
+
+        if(do_ecn != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_ipext, "InNoECTPkts", &ipext_InNoECTPkts);
+            arl_expect(arl_ipext, "InECT1Pkts",  &ipext_InECT1Pkts);
+            arl_expect(arl_ipext, "InECT0Pkts",  &ipext_InECT0Pkts);
+            arl_expect(arl_ipext, "InCEPkts",    &ipext_InCEPkts);
+        }
+
+        // --------------------------------------------------------------------
+        // IP TCP
+
+        if(do_tcpext_reorder != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPFACKReorder", &tcpext_TCPFACKReorder);
+            arl_expect(arl_tcpext, "TCPSACKReorder", &tcpext_TCPSACKReorder);
+            arl_expect(arl_tcpext, "TCPRenoReorder", &tcpext_TCPRenoReorder);
+            arl_expect(arl_tcpext, "TCPTSReorder",   &tcpext_TCPTSReorder);
+        }
+
+        if(do_tcpext_syscookies != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "SyncookiesSent",   &tcpext_SyncookiesSent);
+            arl_expect(arl_tcpext, "SyncookiesRecv",   &tcpext_SyncookiesRecv);
+            arl_expect(arl_tcpext, "SyncookiesFailed", &tcpext_SyncookiesFailed);
+        }
+
+        if(do_tcpext_ofo != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPOFOQueue", &tcpext_TCPOFOQueue);
+            arl_expect(arl_tcpext, "TCPOFODrop",  &tcpext_TCPOFODrop);
+            arl_expect(arl_tcpext, "TCPOFOMerge", &tcpext_TCPOFOMerge);
+            arl_expect(arl_tcpext, "OfoPruned",   &tcpext_OfoPruned);
+        }
+
+        if(do_tcpext_connaborts != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPAbortOnData",    &tcpext_TCPAbortOnData);
+            arl_expect(arl_tcpext, "TCPAbortOnClose",   &tcpext_TCPAbortOnClose);
+            arl_expect(arl_tcpext, "TCPAbortOnMemory",  &tcpext_TCPAbortOnMemory);
+            arl_expect(arl_tcpext, "TCPAbortOnTimeout", &tcpext_TCPAbortOnTimeout);
+            arl_expect(arl_tcpext, "TCPAbortOnLinger",  &tcpext_TCPAbortOnLinger);
+            arl_expect(arl_tcpext, "TCPAbortFailed",    &tcpext_TCPAbortFailed);
+        }
+
+        if(do_tcpext_memory != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPMemoryPressures", &tcpext_TCPMemoryPressures);
+        }
+
+        if(do_tcpext_accept_queue != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "ListenOverflows", &tcpext_ListenOverflows);
+            arl_expect(arl_tcpext, "ListenDrops",     &tcpext_ListenDrops);
+        }
+
+        if(do_tcpext_syn_queue != CONFIG_BOOLEAN_NO) {
+            arl_expect(arl_tcpext, "TCPReqQFullDrop",      &tcpext_TCPReqQFullDrop);
+            arl_expect(arl_tcpext, "TCPReqQFullDoCookies", &tcpext_TCPReqQFullDoCookies);
+        }
+
+        // shared metrics
+        arl_expect(arl_tcpext, "TCPSynRetrans", &tcpext_TCPSynRetrans);
+    }
+
+    if(unlikely(!ff)) {
+        char filename[FILENAME_MAX + 1];
+        snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/net/netstat");
+        ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_NETSTAT, "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;
+    size_t words;
+
+    arl_begin(arl_ipext);
+    arl_begin(arl_tcpext);
+
+    for(l = 0; l < lines ;l++) {
+        char *key = procfile_lineword(ff, l, 0);
+        uint32_t hash = simple_hash(key);
+
+        if(unlikely(hash == hash_ipext && strcmp(key, "IpExt") == 0)) {
+            size_t h = l++;
+
+            words = procfile_linewords(ff, l);
+            if(unlikely(words < 2)) {
+                error("Cannot read /proc/net/netstat IpExt line. Expected 2+ params, read %zu.", words);
+                continue;
+            }
+
+            parse_line_pair(ff, arl_ipext, h, l);
+
+            // --------------------------------------------------------------------
+
+            if(do_bandwidth == CONFIG_BOOLEAN_YES || (do_bandwidth == CONFIG_BOOLEAN_AUTO &&
+                                                      (ipext_InOctets ||
+                                                       ipext_OutOctets ||
+                                                       netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_bandwidth = CONFIG_BOOLEAN_YES;
+                static RRDSET *st_system_ip = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+                if(unlikely(!st_system_ip)) {
+                    st_system_ip = rrdset_create_localhost(
+                            "system"
+                            , RRD_TYPE_NET_NETSTAT
+                            , NULL
+                            , "network"
+                            , NULL
+                            , "IP Bandwidth"
+                            , "kilobits/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_SYSTEM_IP
+                            , update_every
+                            , RRDSET_TYPE_AREA
+                    );
+
+                    rd_in  = rrddim_add(st_system_ip, "InOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_system_ip, "OutOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_system_ip);
+
+                rrddim_set_by_pointer(st_system_ip, rd_in,  ipext_InOctets);
+                rrddim_set_by_pointer(st_system_ip, rd_out, ipext_OutOctets);
+
+                rrdset_done(st_system_ip);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_inerrors == CONFIG_BOOLEAN_YES || (do_inerrors == CONFIG_BOOLEAN_AUTO &&
+                                                     (ipext_InNoRoutes ||
+                                                      ipext_InTruncatedPkts ||
+                                                      netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_inerrors = CONFIG_BOOLEAN_YES;
+                static RRDSET *st_ip_inerrors = NULL;
+                static RRDDIM *rd_noroutes = NULL, *rd_truncated = NULL, *rd_checksum = NULL;
+
+                if(unlikely(!st_ip_inerrors)) {
+                    st_ip_inerrors = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "inerrors"
+                            , NULL
+                            , "errors"
+                            , NULL
+                            , "IP Input Errors"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_ERRORS
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rrdset_flag_set(st_ip_inerrors, RRDSET_FLAG_DETAIL);
+
+                    rd_noroutes  = rrddim_add(st_ip_inerrors, "InNoRoutes",      "noroutes",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_truncated = rrddim_add(st_ip_inerrors, "InTruncatedPkts", "truncated", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_checksum  = rrddim_add(st_ip_inerrors, "InCsumErrors",    "checksum",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_ip_inerrors);
+
+                rrddim_set_by_pointer(st_ip_inerrors, rd_noroutes,  ipext_InNoRoutes);
+                rrddim_set_by_pointer(st_ip_inerrors, rd_truncated, ipext_InTruncatedPkts);
+                rrddim_set_by_pointer(st_ip_inerrors, rd_checksum,  ipext_InCsumErrors);
+
+                rrdset_done(st_ip_inerrors);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_mcast == CONFIG_BOOLEAN_YES || (do_mcast == CONFIG_BOOLEAN_AUTO &&
+                                                  (ipext_InMcastOctets ||
+                                                   ipext_OutMcastOctets ||
+                                                   netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_mcast = CONFIG_BOOLEAN_YES;
+                static RRDSET *st_ip_mcast = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+                if(unlikely(!st_ip_mcast)) {
+                    st_ip_mcast = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "mcast"
+                            , NULL
+                            , "multicast"
+                            , NULL
+                            , "IP Multicast Bandwidth"
+                            , "kilobits/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_MCAST
+                            , update_every
+                            , RRDSET_TYPE_AREA
+                    );
+
+                    rrdset_flag_set(st_ip_mcast, RRDSET_FLAG_DETAIL);
+
+                    rd_in  = rrddim_add(st_ip_mcast, "InMcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_mcast, "OutMcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_ip_mcast);
+
+                rrddim_set_by_pointer(st_ip_mcast, rd_in,  ipext_InMcastOctets);
+                rrddim_set_by_pointer(st_ip_mcast, rd_out, ipext_OutMcastOctets);
+
+                rrdset_done(st_ip_mcast);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_bcast == CONFIG_BOOLEAN_YES || (do_bcast == CONFIG_BOOLEAN_AUTO &&
+                                                  (ipext_InBcastOctets ||
+                                                   ipext_OutBcastOctets ||
+                                                   netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_bcast = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_ip_bcast = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+                if(unlikely(!st_ip_bcast)) {
+                    st_ip_bcast = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "bcast"
+                            , NULL
+                            , "broadcast"
+                            , NULL
+                            , "IP Broadcast Bandwidth"
+                            , "kilobits/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_BCAST
+                            , update_every
+                            , RRDSET_TYPE_AREA
+                    );
+
+                    rrdset_flag_set(st_ip_bcast, RRDSET_FLAG_DETAIL);
+
+                    rd_in  = rrddim_add(st_ip_bcast, "InBcastOctets",  "received", 8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_bcast, "OutBcastOctets", "sent",    -8, BITS_IN_A_KILOBIT, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_ip_bcast);
+
+                rrddim_set_by_pointer(st_ip_bcast, rd_in,  ipext_InBcastOctets);
+                rrddim_set_by_pointer(st_ip_bcast, rd_out, ipext_OutBcastOctets);
+
+                rrdset_done(st_ip_bcast);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_mcast_p == CONFIG_BOOLEAN_YES || (do_mcast_p == CONFIG_BOOLEAN_AUTO &&
+                                                    (ipext_InMcastPkts ||
+                                                     ipext_OutMcastPkts ||
+                                                     netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_mcast_p = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_ip_mcastpkts = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+                if(unlikely(!st_ip_mcastpkts)) {
+                    st_ip_mcastpkts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "mcastpkts"
+                            , NULL
+                            , "multicast"
+                            , NULL
+                            , "IP Multicast Packets"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_MCAST_PACKETS
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rrdset_flag_set(st_ip_mcastpkts, RRDSET_FLAG_DETAIL);
+
+                    rd_in  = rrddim_add(st_ip_mcastpkts, "InMcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_mcastpkts, "OutMcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else rrdset_next(st_ip_mcastpkts);
+
+                rrddim_set_by_pointer(st_ip_mcastpkts, rd_in,  ipext_InMcastPkts);
+                rrddim_set_by_pointer(st_ip_mcastpkts, rd_out, ipext_OutMcastPkts);
+
+                rrdset_done(st_ip_mcastpkts);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_bcast_p == CONFIG_BOOLEAN_YES || (do_bcast_p == CONFIG_BOOLEAN_AUTO &&
+                                                    (ipext_InBcastPkts ||
+                                                     ipext_OutBcastPkts ||
+                                                     netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_bcast_p = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_ip_bcastpkts = NULL;
+                static RRDDIM *rd_in = NULL, *rd_out = NULL;
+
+                if(unlikely(!st_ip_bcastpkts)) {
+                    st_ip_bcastpkts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "bcastpkts"
+                            , NULL
+                            , "broadcast"
+                            , NULL
+                            , "IP Broadcast Packets"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_BCAST_PACKETS
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rrdset_flag_set(st_ip_bcastpkts, RRDSET_FLAG_DETAIL);
+
+                    rd_in  = rrddim_add(st_ip_bcastpkts, "InBcastPkts",  "received", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_out = rrddim_add(st_ip_bcastpkts, "OutBcastPkts", "sent",    -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_ip_bcastpkts);
+
+                rrddim_set_by_pointer(st_ip_bcastpkts, rd_in,  ipext_InBcastPkts);
+                rrddim_set_by_pointer(st_ip_bcastpkts, rd_out, ipext_OutBcastPkts);
+
+                rrdset_done(st_ip_bcastpkts);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_ecn == CONFIG_BOOLEAN_YES || (do_ecn == CONFIG_BOOLEAN_AUTO &&
+                                                (ipext_InCEPkts ||
+                                                 ipext_InECT0Pkts ||
+                                                 ipext_InECT1Pkts ||
+                                                 ipext_InNoECTPkts ||
+                                                 netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_ecn = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_ecnpkts = NULL;
+                static RRDDIM *rd_cep = NULL, *rd_noectp = NULL, *rd_ectp0 = NULL, *rd_ectp1 = NULL;
+
+                if(unlikely(!st_ecnpkts)) {
+                    st_ecnpkts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "ecnpkts"
+                            , NULL
+                            , "ecn"
+                            , NULL
+                            , "IP ECN Statistics"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_ECN
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rrdset_flag_set(st_ecnpkts, RRDSET_FLAG_DETAIL);
+
+                    rd_cep    = rrddim_add(st_ecnpkts, "InCEPkts",    "CEP",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_noectp = rrddim_add(st_ecnpkts, "InNoECTPkts", "NoECTP", -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_ectp0  = rrddim_add(st_ecnpkts, "InECT0Pkts",  "ECTP0",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_ectp1  = rrddim_add(st_ecnpkts, "InECT1Pkts",  "ECTP1",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else rrdset_next(st_ecnpkts);
+
+                rrddim_set_by_pointer(st_ecnpkts, rd_cep,    ipext_InCEPkts);
+                rrddim_set_by_pointer(st_ecnpkts, rd_noectp, ipext_InNoECTPkts);
+                rrddim_set_by_pointer(st_ecnpkts, rd_ectp0,  ipext_InECT0Pkts);
+                rrddim_set_by_pointer(st_ecnpkts, rd_ectp1,  ipext_InECT1Pkts);
+
+                rrdset_done(st_ecnpkts);
+            }
+        }
+        else if(unlikely(hash == hash_tcpext && strcmp(key, "TcpExt") == 0)) {
+            size_t h = l++;
+
+            words = procfile_linewords(ff, l);
+            if(unlikely(words < 2)) {
+                error("Cannot read /proc/net/netstat TcpExt line. Expected 2+ params, read %zu.", words);
+                continue;
+            }
+
+            parse_line_pair(ff, arl_tcpext, h, l);
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_memory == CONFIG_BOOLEAN_YES || (do_tcpext_memory == CONFIG_BOOLEAN_AUTO &&
+                                                          (tcpext_TCPMemoryPressures ||
+                                                           netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_memory = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_tcpmemorypressures = NULL;
+                static RRDDIM *rd_pressures = NULL;
+
+                if(unlikely(!st_tcpmemorypressures)) {
+                    st_tcpmemorypressures = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcpmemorypressures"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Memory Pressures"
+                            , "events/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_MEM
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_pressures = rrddim_add(st_tcpmemorypressures, "TCPMemoryPressures",   "pressures",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_tcpmemorypressures);
+
+                rrddim_set_by_pointer(st_tcpmemorypressures, rd_pressures, tcpext_TCPMemoryPressures);
+
+                rrdset_done(st_tcpmemorypressures);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_connaborts == CONFIG_BOOLEAN_YES || (do_tcpext_connaborts == CONFIG_BOOLEAN_AUTO &&
+                                                              (tcpext_TCPAbortOnData ||
+                                                               tcpext_TCPAbortOnClose ||
+                                                               tcpext_TCPAbortOnMemory ||
+                                                               tcpext_TCPAbortOnTimeout ||
+                                                               tcpext_TCPAbortOnLinger ||
+                                                               tcpext_TCPAbortFailed ||
+                                                               netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_connaborts = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_tcpconnaborts = NULL;
+                static RRDDIM *rd_baddata = NULL, *rd_userclosed = NULL, *rd_nomemory = NULL, *rd_timeout = NULL, *rd_linger = NULL, *rd_failed = NULL;
+
+                if(unlikely(!st_tcpconnaborts)) {
+                    st_tcpconnaborts = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcpconnaborts"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Connection Aborts"
+                            , "connections/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_CONNABORTS
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_baddata    = rrddim_add(st_tcpconnaborts, "TCPAbortOnData",    "baddata",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_userclosed = rrddim_add(st_tcpconnaborts, "TCPAbortOnClose",   "userclosed",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_nomemory   = rrddim_add(st_tcpconnaborts, "TCPAbortOnMemory",  "nomemory",    1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_timeout    = rrddim_add(st_tcpconnaborts, "TCPAbortOnTimeout", "timeout",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_linger     = rrddim_add(st_tcpconnaborts, "TCPAbortOnLinger",  "linger",      1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_failed     = rrddim_add(st_tcpconnaborts, "TCPAbortFailed",    "failed",     -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_tcpconnaborts);
+
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_baddata,    tcpext_TCPAbortOnData);
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_userclosed, tcpext_TCPAbortOnClose);
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_nomemory,   tcpext_TCPAbortOnMemory);
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_timeout,    tcpext_TCPAbortOnTimeout);
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_linger,     tcpext_TCPAbortOnLinger);
+                rrddim_set_by_pointer(st_tcpconnaborts, rd_failed,     tcpext_TCPAbortFailed);
+
+                rrdset_done(st_tcpconnaborts);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_reorder == CONFIG_BOOLEAN_YES || (do_tcpext_reorder == CONFIG_BOOLEAN_AUTO &&
+                                                           (tcpext_TCPRenoReorder ||
+                                                            tcpext_TCPFACKReorder ||
+                                                            tcpext_TCPSACKReorder ||
+                                                            tcpext_TCPTSReorder ||
+                                                            netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_reorder = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_tcpreorders = NULL;
+                static RRDDIM *rd_timestamp = NULL, *rd_sack = NULL, *rd_fack = NULL, *rd_reno = NULL;
+
+                if(unlikely(!st_tcpreorders)) {
+                    st_tcpreorders = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcpreorders"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Reordered Packets by Detection Method"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_REORDERS
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_timestamp = rrddim_add(st_tcpreorders, "TCPTSReorder",   "timestamp",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_sack      = rrddim_add(st_tcpreorders, "TCPSACKReorder", "sack",        1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_fack      = rrddim_add(st_tcpreorders, "TCPFACKReorder", "fack",        1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_reno      = rrddim_add(st_tcpreorders, "TCPRenoReorder", "reno",        1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_tcpreorders);
+
+                rrddim_set_by_pointer(st_tcpreorders, rd_timestamp, tcpext_TCPTSReorder);
+                rrddim_set_by_pointer(st_tcpreorders, rd_sack,      tcpext_TCPSACKReorder);
+                rrddim_set_by_pointer(st_tcpreorders, rd_fack,      tcpext_TCPFACKReorder);
+                rrddim_set_by_pointer(st_tcpreorders, rd_reno,      tcpext_TCPRenoReorder);
+
+                rrdset_done(st_tcpreorders);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_ofo == CONFIG_BOOLEAN_YES || (do_tcpext_ofo == CONFIG_BOOLEAN_AUTO &&
+                                                       (tcpext_TCPOFOQueue ||
+                                                        tcpext_TCPOFODrop ||
+                                                        tcpext_TCPOFOMerge ||
+                                                        netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_ofo = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_ip_tcpofo = NULL;
+                static RRDDIM *rd_inqueue = NULL, *rd_dropped = NULL, *rd_merged = NULL, *rd_pruned = NULL;
+
+                if(unlikely(!st_ip_tcpofo)) {
+
+                    st_ip_tcpofo = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcpofo"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Out-Of-Order Queue"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_OFO
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_inqueue = rrddim_add(st_ip_tcpofo, "TCPOFOQueue", "inqueue",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_dropped = rrddim_add(st_ip_tcpofo, "TCPOFODrop",  "dropped", -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_merged  = rrddim_add(st_ip_tcpofo, "TCPOFOMerge", "merged",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_pruned  = rrddim_add(st_ip_tcpofo, "OfoPruned",   "pruned",  -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_ip_tcpofo);
+
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_inqueue, tcpext_TCPOFOQueue);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_dropped, tcpext_TCPOFODrop);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_merged,  tcpext_TCPOFOMerge);
+                rrddim_set_by_pointer(st_ip_tcpofo, rd_pruned,  tcpext_OfoPruned);
+
+                rrdset_done(st_ip_tcpofo);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_syscookies == CONFIG_BOOLEAN_YES || (do_tcpext_syscookies == CONFIG_BOOLEAN_AUTO &&
+                                                              (tcpext_SyncookiesSent ||
+                                                               tcpext_SyncookiesRecv ||
+                                                               tcpext_SyncookiesFailed ||
+                                                               netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_syscookies = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_syncookies = NULL;
+                static RRDDIM *rd_received = NULL, *rd_sent = NULL, *rd_failed = NULL;
+
+                if(unlikely(!st_syncookies)) {
+
+                    st_syncookies = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcpsyncookies"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP SYN Cookies"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_SYNCOOKIES
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_received = rrddim_add(st_syncookies, "SyncookiesRecv",   "received",  1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_sent     = rrddim_add(st_syncookies, "SyncookiesSent",   "sent",     -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_failed   = rrddim_add(st_syncookies, "SyncookiesFailed", "failed",   -1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_syncookies);
+
+                rrddim_set_by_pointer(st_syncookies, rd_received, tcpext_SyncookiesRecv);
+                rrddim_set_by_pointer(st_syncookies, rd_sent,     tcpext_SyncookiesSent);
+                rrddim_set_by_pointer(st_syncookies, rd_failed,   tcpext_SyncookiesFailed);
+
+                rrdset_done(st_syncookies);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_syn_queue == CONFIG_BOOLEAN_YES || (do_tcpext_syn_queue == CONFIG_BOOLEAN_AUTO &&
+                                                             (tcpext_TCPReqQFullDrop ||
+                                                              tcpext_TCPReqQFullDoCookies ||
+                                                              netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_syn_queue = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_syn_queue = NULL;
+                static RRDDIM
+                        *rd_TCPReqQFullDrop = NULL,
+                        *rd_TCPReqQFullDoCookies = NULL;
+
+                if(unlikely(!st_syn_queue)) {
+
+                    st_syn_queue = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcp_syn_queue"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP SYN Queue Issues"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_SYN_QUEUE
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_TCPReqQFullDrop      = rrddim_add(st_syn_queue, "TCPReqQFullDrop",      "drops",   1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_TCPReqQFullDoCookies = rrddim_add(st_syn_queue, "TCPReqQFullDoCookies", "cookies", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_syn_queue);
+
+                rrddim_set_by_pointer(st_syn_queue, rd_TCPReqQFullDrop,      tcpext_TCPReqQFullDrop);
+                rrddim_set_by_pointer(st_syn_queue, rd_TCPReqQFullDoCookies, tcpext_TCPReqQFullDoCookies);
+
+                rrdset_done(st_syn_queue);
+            }
+
+            // --------------------------------------------------------------------
+
+            if(do_tcpext_accept_queue == CONFIG_BOOLEAN_YES || (do_tcpext_accept_queue == CONFIG_BOOLEAN_AUTO &&
+                                                                (tcpext_ListenOverflows ||
+                                                                 tcpext_ListenDrops ||
+                                                                 netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) {
+                do_tcpext_accept_queue = CONFIG_BOOLEAN_YES;
+
+                static RRDSET *st_accept_queue = NULL;
+                static RRDDIM *rd_overflows = NULL,
+                    *rd_drops = NULL;
+
+                if(unlikely(!st_accept_queue)) {
+
+                    st_accept_queue = rrdset_create_localhost(
+                            RRD_TYPE_NET_NETSTAT
+                            , "tcp_accept_queue"
+                            , NULL
+                            , "tcp"
+                            , NULL
+                            , "TCP Accept Queue Issues"
+                            , "packets/s"
+                            , PLUGIN_PROC_NAME
+                            , PLUGIN_PROC_MODULE_NETSTAT_NAME
+                            , NETDATA_CHART_PRIO_IP_TCP_ACCEPT_QUEUE
+                            , update_every
+                            , RRDSET_TYPE_LINE
+                    );
+
+                    rd_overflows = rrddim_add(st_accept_queue, "ListenOverflows", "overflows", 1, 1, RRD_ALGORITHM_INCREMENTAL);
+                    rd_drops     = rrddim_add(st_accept_queue, "ListenDrops",     "drops",     1, 1, RRD_ALGORITHM_INCREMENTAL);
+                }
+                else
+                    rrdset_next(st_accept_queue);
+
+                rrddim_set_by_pointer(st_accept_queue, rd_overflows, tcpext_ListenOverflows);
+                rrddim_set_by_pointer(st_accept_queue, rd_drops,     tcpext_ListenDrops);
+
+                rrdset_done(st_accept_queue);
+            }
+
+        }
+    }
+
+    return 0;
+}