3 #define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
4 #define RRD_TYPE_NET_STAT_SYNPROXY "synproxy"
5 #define RRD_TYPE_NET_STAT_SYNPROXY_LEN strlen(RRD_TYPE_NET_STAT_SYNPROXY)
7 int do_proc_net_stat_synproxy(int update_every, unsigned long long dt) {
8 static int do_entries = -1, do_cookies = -1, do_syns = -1, do_reopened = -1;
9 static procfile *ff = NULL;
11 if(do_entries == -1) do_entries = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY entries", CONFIG_ONDEMAND_ONDEMAND);
12 if(do_cookies == -1) do_cookies = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY cookies", CONFIG_ONDEMAND_ONDEMAND);
13 if(do_syns == -1) do_syns = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY SYN received", CONFIG_ONDEMAND_ONDEMAND);
14 if(do_reopened == -1) do_reopened = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY connections reopened", CONFIG_ONDEMAND_ONDEMAND);
19 char filename[FILENAME_MAX + 1];
20 snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/stat/synproxy");
21 ff = procfile_open(config_get("plugin:proc:/proc/net/stat/synproxy", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
25 ff = procfile_readall(ff);
26 if(!ff) return 0; // we return 0, so that we will retry to open it next time
28 // make sure we have 3 lines
29 size_t lines = procfile_lines(ff), l;
31 error("/proc/net/stat/synproxy has %zu lines, expected no less than 2. Disabling it.", lines);
35 unsigned long long entries = 0, syn_received = 0, cookie_invalid = 0, cookie_valid = 0, cookie_retrans = 0, conn_reopened = 0;
37 // synproxy gives its values per CPU
38 for(l = 1; l < lines ;l++) {
39 int words = procfile_linewords(ff, l);
40 if(words < 6) continue;
42 entries += strtoull(procfile_lineword(ff, l, 0), NULL, 16);
43 syn_received += strtoull(procfile_lineword(ff, l, 1), NULL, 16);
44 cookie_invalid += strtoull(procfile_lineword(ff, l, 2), NULL, 16);
45 cookie_valid += strtoull(procfile_lineword(ff, l, 3), NULL, 16);
46 cookie_retrans += strtoull(procfile_lineword(ff, l, 4), NULL, 16);
47 conn_reopened += strtoull(procfile_lineword(ff, l, 5), NULL, 16);
50 unsigned long long events = entries + syn_received + cookie_invalid + cookie_valid + cookie_retrans + conn_reopened;
54 // --------------------------------------------------------------------
56 if((do_entries == CONFIG_ONDEMAND_ONDEMAND && events) || do_entries == CONFIG_ONDEMAND_YES) {
57 do_entries = CONFIG_ONDEMAND_YES;
59 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_entries");
61 st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_entries", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY Entries Used", "entries", 1004, update_every, RRDSET_TYPE_LINE);
63 rrddim_add(st, "entries", NULL, 1, 1, RRDDIM_ABSOLUTE);
67 rrddim_set(st, "entries", entries);
71 // --------------------------------------------------------------------
73 if((do_syns == CONFIG_ONDEMAND_ONDEMAND && events) || do_syns == CONFIG_ONDEMAND_YES) {
74 do_syns = CONFIG_ONDEMAND_YES;
76 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_syn_received");
78 st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_syn_received", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY SYN Packets received", "SYN/s", 1001, update_every, RRDSET_TYPE_LINE);
80 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
84 rrddim_set(st, "received", syn_received);
88 // --------------------------------------------------------------------
90 if((do_reopened == CONFIG_ONDEMAND_ONDEMAND && events) || do_reopened == CONFIG_ONDEMAND_YES) {
91 do_reopened = CONFIG_ONDEMAND_YES;
93 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened");
95 st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY Connections Reopened", "connections/s", 1003, update_every, RRDSET_TYPE_LINE);
97 rrddim_add(st, "reopened", NULL, 1, 1, RRDDIM_INCREMENTAL);
101 rrddim_set(st, "reopened", conn_reopened);
105 // --------------------------------------------------------------------
107 if((do_cookies == CONFIG_ONDEMAND_ONDEMAND && events) || do_cookies == CONFIG_ONDEMAND_YES) {
108 do_cookies = CONFIG_ONDEMAND_YES;
110 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_cookies");
112 st = rrdset_create(RRD_TYPE_NET_STAT_NETFILTER, RRD_TYPE_NET_STAT_SYNPROXY "_cookies", NULL, RRD_TYPE_NET_STAT_SYNPROXY, NULL, "SYNPROXY TCP Cookies", "cookies/s", 1002, update_every, RRDSET_TYPE_LINE);
114 rrddim_add(st, "valid", NULL, 1, 1, RRDDIM_INCREMENTAL);
115 rrddim_add(st, "invalid", NULL, -1, 1, RRDDIM_INCREMENTAL);
116 rrddim_add(st, "retransmits", NULL, 1, 1, RRDDIM_INCREMENTAL);
118 else rrdset_next(st);
120 rrddim_set(st, "valid", cookie_valid);
121 rrddim_set(st, "invalid", cookie_invalid);
122 rrddim_set(st, "retransmits", cookie_retrans);