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ChangeLog: snmp6 plugin: Add plugin for parsing IPv6 statistics We would like to have pure ipv6 interface statistics. To get them, we parse the snmp6 interface. Signed-off-by: Nick Hainke <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| /* | ||
| This Plugin is based opn the interface.c Plugin. | ||
| */ | ||
|
|
||
| #if HAVE_LINUX_IF_H | ||
| #include <linux/if.h> | ||
| #elif HAVE_NET_IF_H | ||
| #include <net/if.h> | ||
| #endif | ||
|
|
||
| #include <ifaddrs.h> | ||
|
|
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| #include <stdint.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
|
|
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| #include <errno.h> | ||
| #include <stdbool.h> | ||
| #include <stdio.h> | ||
| #include <sys/types.h> | ||
|
|
||
| #include "plugin.h" | ||
| #include "utils/cmds/putval.h" | ||
| #include "utils/common/common.h" | ||
| #include "utils/ignorelist/ignorelist.h" | ||
|
|
||
| static const char *config_keys[] = { | ||
| "Interface", | ||
| "IgnoreSelected", | ||
| }; | ||
| static int config_keys_num = STATIC_ARRAY_SIZE(config_keys); | ||
|
|
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| static ignorelist_t *ignorelist; | ||
| struct ifaddrs *if_list; | ||
|
|
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| static int snmp6_config(const char *key, const char *value) { | ||
| if (ignorelist == NULL) | ||
| ignorelist = ignorelist_create(/* invert = */ 1); | ||
|
|
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| if (strcasecmp(key, "Interface") == 0) { | ||
| ignorelist_add(ignorelist, value); | ||
| } else if (strcasecmp(key, "IgnoreSelected") == 0) { | ||
| int invert = 1; | ||
| if (IS_TRUE(value)) | ||
| invert = 0; | ||
| ignorelist_set_invert(ignorelist, invert); | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
|
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| /* Copied from interface.c */ | ||
| static void snmp6_submit(const char *dev, const char *type, derive_t rx, | ||
| derive_t tx) { | ||
| value_list_t vl = VALUE_LIST_INIT; | ||
| value_t values[] = { | ||
| {.derive = rx}, | ||
| {.derive = tx}, | ||
| }; | ||
|
|
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| if (ignorelist_match(ignorelist, dev) != 0) | ||
| return; | ||
|
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| vl.values = values; | ||
| vl.values_len = STATIC_ARRAY_SIZE(values); | ||
| sstrncpy(vl.plugin, "snmp6", sizeof(vl.plugin)); | ||
| sstrncpy(vl.plugin_instance, dev, sizeof(vl.plugin_instance)); | ||
| sstrncpy(vl.type, type, sizeof(vl.type)); | ||
|
|
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| plugin_dispatch_values(&vl); | ||
| } /* void if_submit */ | ||
|
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| int snmp_read(char *ifname) { | ||
| FILE *fh; | ||
| char buffer[1024]; | ||
| char *fields[16]; | ||
| int numfields; | ||
| int currline = 0; | ||
| derive_t data[76]; | ||
| char procpath[1024]; | ||
| int offset = 0; | ||
|
|
||
| if (strncmp("all", ifname, strlen("all")) == 0) { | ||
| snprintf(procpath, 1024, "/proc/net/snmp6"); | ||
| offset = 1; | ||
| } else { | ||
| snprintf(procpath, 1024, "/proc/net/dev_snmp6/%s", ifname); | ||
| } | ||
|
|
||
| if ((fh = fopen(procpath, "r")) == NULL) { | ||
| WARNING("interface plugin: fopen: %s", STRERRNO); | ||
| return -1; | ||
| } | ||
|
|
||
| while (fgets(buffer, 1024, fh) != NULL) { | ||
| numfields = strsplit(buffer, fields, 16); | ||
|
|
||
| if (numfields < 2) | ||
| continue; | ||
|
|
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| data[currline++] = atoll(fields[1]); | ||
| } | ||
|
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| fclose(fh); | ||
|
|
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| if (currline < 25) { | ||
| return -1; | ||
| } | ||
|
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| snmp6_submit(ifname, "if_octets", data[23 - offset], data[24 - offset]); | ||
| snmp6_submit(ifname, "if_octets_mcast", data[25 - offset], data[26 - offset]); | ||
| snmp6_submit(ifname, "if_octets_bcast", data[27 - offset], data[28 - offset]); | ||
| return 0; | ||
| } | ||
|
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||
| int read_all_interfaces(void) { | ||
| #ifndef HAVE_IFADDRS_H | ||
| return -1; | ||
| #else | ||
| if (getifaddrs(&if_list) != 0) | ||
| return -1; | ||
|
|
||
| for (struct ifaddrs *if_ptr = if_list; if_ptr != NULL; | ||
| if_ptr = if_ptr->ifa_next) { | ||
| snmp_read(if_ptr->ifa_name); | ||
| } | ||
| snmp_read("all"); | ||
| return 0; | ||
| #endif | ||
| } | ||
|
|
||
| void module_register(void) { | ||
| plugin_register_config("snmp6", snmp6_config, config_keys, config_keys_num); | ||
| plugin_register_read("snmp6", read_all_interfaces); | ||
| } /* void module_register */ |
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