11 #include "plugin_proc.h"
14 #define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
15 #define RRD_TYPE_NET_STAT_SYNPROXY "synproxy"
16 #define RRD_TYPE_NET_STAT_SYNPROXY_LEN strlen(RRD_TYPE_NET_STAT_SYNPROXY)
18 int do_proc_net_stat_synproxy(int update_every, unsigned long long dt) {
19 static int do_entries = -1, do_cookies = -1, do_syns = -1, do_reopened = -1;
20 static procfile *ff = NULL;
22 if(do_entries == -1) do_entries = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY entries", CONFIG_ONDEMAND_ONDEMAND);
23 if(do_cookies == -1) do_cookies = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY cookies", CONFIG_ONDEMAND_ONDEMAND);
24 if(do_syns == -1) do_syns = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY SYN received", CONFIG_ONDEMAND_ONDEMAND);
25 if(do_reopened == -1) do_reopened = config_get_boolean_ondemand("plugin:proc:/proc/net/stat/synproxy", "SYNPROXY connections reopened", CONFIG_ONDEMAND_ONDEMAND);
30 char filename[FILENAME_MAX + 1];
31 snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/net/stat/synproxy");
32 ff = procfile_open(config_get("plugin:proc:/proc/net/stat/synproxy", "filename to monitor", filename), " \t,:|", PROCFILE_FLAG_DEFAULT);
36 ff = procfile_readall(ff);
37 if(!ff) return 0; // we return 0, so that we will retry to open it next time
39 // make sure we have 3 lines
40 unsigned long lines = procfile_lines(ff), l;
42 error("/proc/net/stat/synproxy has %d lines, expected no less than 2. Disabling it.", lines);
46 unsigned long long entries = 0, syn_received = 0, cookie_invalid = 0, cookie_valid = 0, cookie_retrans = 0, conn_reopened = 0;
48 // synproxy gives its values per CPU
49 for(l = 1; l < lines ;l++) {
50 int words = procfile_linewords(ff, l);
51 if(words < 6) continue;
53 entries += strtoull(procfile_lineword(ff, l, 0), NULL, 16);
54 syn_received += strtoull(procfile_lineword(ff, l, 1), NULL, 16);
55 cookie_invalid += strtoull(procfile_lineword(ff, l, 2), NULL, 16);
56 cookie_valid += strtoull(procfile_lineword(ff, l, 3), NULL, 16);
57 cookie_retrans += strtoull(procfile_lineword(ff, l, 4), NULL, 16);
58 conn_reopened += strtoull(procfile_lineword(ff, l, 5), NULL, 16);
61 unsigned long long events = entries + syn_received + cookie_invalid + cookie_valid + cookie_retrans + conn_reopened;
65 // --------------------------------------------------------------------
67 if((do_entries == CONFIG_ONDEMAND_ONDEMAND && events) || do_entries == CONFIG_ONDEMAND_YES) {
68 do_entries = CONFIG_ONDEMAND_YES;
70 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_entries");
72 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);
74 rrddim_add(st, "entries", NULL, 1, 1, RRDDIM_ABSOLUTE);
78 rrddim_set(st, "entries", entries);
82 // --------------------------------------------------------------------
84 if((do_syns == CONFIG_ONDEMAND_ONDEMAND && events) || do_syns == CONFIG_ONDEMAND_YES) {
85 do_syns = CONFIG_ONDEMAND_YES;
87 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_syn_received");
89 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);
91 rrddim_add(st, "received", NULL, 1, 1, RRDDIM_INCREMENTAL);
95 rrddim_set(st, "received", syn_received);
99 // --------------------------------------------------------------------
101 if((do_reopened == CONFIG_ONDEMAND_ONDEMAND && events) || do_reopened == CONFIG_ONDEMAND_YES) {
102 do_reopened = CONFIG_ONDEMAND_YES;
104 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_conn_reopened");
106 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);
108 rrddim_add(st, "reopened", NULL, 1, 1, RRDDIM_INCREMENTAL);
110 else rrdset_next(st);
112 rrddim_set(st, "reopened", conn_reopened);
116 // --------------------------------------------------------------------
118 if((do_cookies == CONFIG_ONDEMAND_ONDEMAND && events) || do_cookies == CONFIG_ONDEMAND_YES) {
119 do_cookies = CONFIG_ONDEMAND_YES;
121 st = rrdset_find(RRD_TYPE_NET_STAT_NETFILTER "." RRD_TYPE_NET_STAT_SYNPROXY "_cookies");
123 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);
125 rrddim_add(st, "valid", NULL, 1, 1, RRDDIM_INCREMENTAL);
126 rrddim_add(st, "invalid", NULL, -1, 1, RRDDIM_INCREMENTAL);
127 rrddim_add(st, "retransmits", NULL, 1, 1, RRDDIM_INCREMENTAL);
129 else rrdset_next(st);
131 rrddim_set(st, "valid", cookie_valid);
132 rrddim_set(st, "invalid", cookie_invalid);
133 rrddim_set(st, "retransmits", cookie_retrans);