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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:19:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:20:17 +0000
commita64a253794ac64cb40befee54db53bde17dd0d49 (patch)
treec1024acc5f6e508814b944d99f112259bb28b1be /src/plugin_nfacct.c
parentNew upstream version 1.10.0+dfsg (diff)
downloadnetdata-a64a253794ac64cb40befee54db53bde17dd0d49.tar.xz
netdata-a64a253794ac64cb40befee54db53bde17dd0d49.zip
New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/plugin_nfacct.c')
-rw-r--r--src/plugin_nfacct.c819
1 files changed, 0 insertions, 819 deletions
diff --git a/src/plugin_nfacct.c b/src/plugin_nfacct.c
deleted file mode 100644
index 02815ef04..000000000
--- a/src/plugin_nfacct.c
+++ /dev/null
@@ -1,819 +0,0 @@
-#include "common.h"
-
-#ifdef INTERNAL_PLUGIN_NFACCT
-
-#ifdef HAVE_LIBMNL
-#include <libmnl/libmnl.h>
-
-static inline size_t mnl_buffer_size() {
- long s = MNL_SOCKET_BUFFER_SIZE;
- if(s <= 0) return 8192;
- return (size_t)s;
-}
-
-// ----------------------------------------------------------------------------
-// DO_NFSTAT - collect netfilter connection tracker statistics via netlink
-// example: https://github.com/formorer/pkg-conntrack-tools/blob/master/src/conntrack.c
-
-#ifdef HAVE_LINUX_NETFILTER_NFNETLINK_CONNTRACK_H
-#define DO_NFSTAT 1
-
-#define RRD_TYPE_NET_STAT_NETFILTER "netfilter"
-#define RRD_TYPE_NET_STAT_CONNTRACK "netlink" // FIXME: should be "conntrack" when merged with the /proc plugin
-
-#include <linux/netfilter/nfnetlink_conntrack.h>
-
-static struct {
- int update_every;
- char *buf;
- size_t buf_size;
- struct mnl_socket *mnl;
- struct nlmsghdr *nlh;
- struct nfgenmsg *nfh;
- unsigned int seq;
- uint32_t portid;
-
- struct nlattr *tb[CTA_STATS_MAX+1];
- const char *attr2name[CTA_STATS_MAX+1];
- kernel_uint_t metrics[CTA_STATS_MAX+1];
-
- struct nlattr *tb_exp[CTA_STATS_EXP_MAX+1];
- const char *attr2name_exp[CTA_STATS_EXP_MAX+1];
- kernel_uint_t metrics_exp[CTA_STATS_EXP_MAX+1];
-} nfstat_root = {
- .update_every = 1,
- .buf = NULL,
- .buf_size = 0,
- .mnl = NULL,
- .nlh = NULL,
- .nfh = NULL,
- .seq = 0,
- .portid = 0,
- .tb = {},
- .attr2name = {
- [CTA_STATS_SEARCHED] = "searched",
- [CTA_STATS_FOUND] = "found",
- [CTA_STATS_NEW] = "new",
- [CTA_STATS_INVALID] = "invalid",
- [CTA_STATS_IGNORE] = "ignore",
- [CTA_STATS_DELETE] = "delete",
- [CTA_STATS_DELETE_LIST] = "delete_list",
- [CTA_STATS_INSERT] = "insert",
- [CTA_STATS_INSERT_FAILED] = "insert_failed",
- [CTA_STATS_DROP] = "drop",
- [CTA_STATS_EARLY_DROP] = "early_drop",
- [CTA_STATS_ERROR] = "icmp_error",
- [CTA_STATS_SEARCH_RESTART] = "search_restart",
- },
- .metrics = {},
- .tb_exp = {},
- .attr2name_exp = {
- [CTA_STATS_EXP_NEW] = "new",
- [CTA_STATS_EXP_CREATE] = "created",
- [CTA_STATS_EXP_DELETE] = "deleted",
- },
- .metrics_exp = {}
-};
-
-
-static int nfstat_init(int update_every) {
- nfstat_root.update_every = update_every;
-
- nfstat_root.buf_size = mnl_buffer_size();
- nfstat_root.buf = mallocz(nfstat_root.buf_size);
-
- nfstat_root.mnl = mnl_socket_open(NETLINK_NETFILTER);
- if(!nfstat_root.mnl) {
- error("NFSTAT: mnl_socket_open() failed");
- return 1;
- }
-
- nfstat_root.seq = (unsigned int)now_realtime_sec() - 1;
-
- if(mnl_socket_bind(nfstat_root.mnl, 0, MNL_SOCKET_AUTOPID) < 0) {
- error("NFSTAT: mnl_socket_bind() failed");
- return 1;
- }
- nfstat_root.portid = mnl_socket_get_portid(nfstat_root.mnl);
-
- return 0;
-}
-
-static void nfstat_cleanup() {
- if(nfstat_root.mnl) {
- mnl_socket_close(nfstat_root.mnl);
- nfstat_root.mnl = NULL;
- }
-
- freez(nfstat_root.buf);
- nfstat_root.buf = NULL;
- nfstat_root.buf_size = 0;
-}
-
-static struct nlmsghdr * nfct_mnl_nlmsghdr_put(char *buf, uint16_t subsys, uint16_t type, uint8_t family, uint32_t seq) {
- struct nlmsghdr *nlh;
- struct nfgenmsg *nfh;
-
- nlh = mnl_nlmsg_put_header(buf);
- nlh->nlmsg_type = (subsys << 8) | type;
- nlh->nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP;
- nlh->nlmsg_seq = seq;
-
- nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
- nfh->nfgen_family = family;
- nfh->version = NFNETLINK_V0;
- nfh->res_id = 0;
-
- return nlh;
-}
-
-static int nfct_stats_attr_cb(const struct nlattr *attr, void *data) {
- const struct nlattr **tb = data;
- int type = mnl_attr_get_type(attr);
-
- if (mnl_attr_type_valid(attr, CTA_STATS_MAX) < 0)
- return MNL_CB_OK;
-
- if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
- error("NFSTAT: mnl_attr_validate() failed");
- return MNL_CB_ERROR;
- }
-
- tb[type] = attr;
- return MNL_CB_OK;
-}
-
-static int nfstat_callback(const struct nlmsghdr *nlh, void *data) {
- (void)data;
-
- struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
-
- mnl_attr_parse(nlh, sizeof(*nfg), nfct_stats_attr_cb, nfstat_root.tb);
-
- // printf("cpu=%-4u\t", ntohs(nfg->res_id));
-
- int i;
- // add the metrics of this CPU into the metrics
- for (i = 0; i < CTA_STATS_MAX+1; i++) {
- if (nfstat_root.tb[i]) {
- // printf("%s=%u ", nfstat_root.attr2name[i], ntohl(mnl_attr_get_u32(nfstat_root.tb[i])));
- nfstat_root.metrics[i] += ntohl(mnl_attr_get_u32(nfstat_root.tb[i]));
- }
- }
- // printf("\n");
-
- return MNL_CB_OK;
-}
-
-static int nfstat_collect_conntrack() {
- // zero all metrics - we will sum the metrics of all CPUs later
- int i;
- for (i = 0; i < CTA_STATS_MAX+1; i++)
- nfstat_root.metrics[i] = 0;
-
- // prepare the request
- nfstat_root.nlh = nfct_mnl_nlmsghdr_put(nfstat_root.buf, NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_GET_STATS_CPU, AF_UNSPEC, nfstat_root.seq);
-
- // send the request
- if(mnl_socket_sendto(nfstat_root.mnl, nfstat_root.nlh, nfstat_root.nlh->nlmsg_len) < 0) {
- error("NFSTAT: mnl_socket_sendto() failed");
- return 1;
- }
-
- // get the reply
- ssize_t ret;
- while ((ret = mnl_socket_recvfrom(nfstat_root.mnl, nfstat_root.buf, nfstat_root.buf_size)) > 0) {
- if(mnl_cb_run(
- nfstat_root.buf
- , (size_t)ret
- , nfstat_root.nlh->nlmsg_seq
- , nfstat_root.portid
- , nfstat_callback
- , NULL
- ) <= MNL_CB_STOP)
- break;
- }
-
- // verify we run without issues
- if (ret == -1) {
- error("NFSTAT: error communicating with kernel. This plugin can only work when netdata runs as root.");
- return 1;
- }
-
- return 0;
-}
-
-static int nfexp_stats_attr_cb(const struct nlattr *attr, void *data)
-{
- const struct nlattr **tb = data;
- int type = mnl_attr_get_type(attr);
-
- if (mnl_attr_type_valid(attr, CTA_STATS_EXP_MAX) < 0)
- return MNL_CB_OK;
-
- if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
- error("NFSTAT EXP: mnl_attr_validate() failed");
- return MNL_CB_ERROR;
- }
-
- tb[type] = attr;
- return MNL_CB_OK;
-}
-
-static int nfstat_callback_exp(const struct nlmsghdr *nlh, void *data) {
- (void)data;
-
- struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
-
- mnl_attr_parse(nlh, sizeof(*nfg), nfexp_stats_attr_cb, nfstat_root.tb_exp);
-
- int i;
- for (i = 0; i < CTA_STATS_EXP_MAX+1; i++) {
- if (nfstat_root.tb_exp[i]) {
- nfstat_root.metrics_exp[i] += ntohl(mnl_attr_get_u32(nfstat_root.tb_exp[i]));
- }
- }
-
- return MNL_CB_OK;
-}
-
-static int nfstat_collect_conntrack_expectations() {
- // zero all metrics - we will sum the metrics of all CPUs later
- int i;
- for (i = 0; i < CTA_STATS_EXP_MAX+1; i++)
- nfstat_root.metrics_exp[i] = 0;
-
- // prepare the request
- nfstat_root.nlh = nfct_mnl_nlmsghdr_put(nfstat_root.buf, NFNL_SUBSYS_CTNETLINK_EXP, IPCTNL_MSG_EXP_GET_STATS_CPU, AF_UNSPEC, nfstat_root.seq);
-
- // send the request
- if(mnl_socket_sendto(nfstat_root.mnl, nfstat_root.nlh, nfstat_root.nlh->nlmsg_len) < 0) {
- error("NFSTAT: mnl_socket_sendto() failed");
- return 1;
- }
-
- // get the reply
- ssize_t ret;
- while ((ret = mnl_socket_recvfrom(nfstat_root.mnl, nfstat_root.buf, nfstat_root.buf_size)) > 0) {
- if(mnl_cb_run(
- nfstat_root.buf
- , (size_t)ret
- , nfstat_root.nlh->nlmsg_seq
- , nfstat_root.portid
- , nfstat_callback_exp
- , NULL
- ) <= MNL_CB_STOP)
- break;
- }
-
- // verify we run without issues
- if (ret == -1) {
- error("NFSTAT: error communicating with kernel. This plugin can only work when netdata runs as root.");
- return 1;
- }
-
- return 0;
-}
-
-static int nfstat_collect() {
- nfstat_root.seq++;
-
- if(nfstat_collect_conntrack())
- return 1;
-
- if(nfstat_collect_conntrack_expectations())
- return 1;
-
- return 0;
-}
-
-static void nfstat_send_metrics() {
-
- {
- static RRDSET *st_new = NULL;
- static RRDDIM *rd_new = NULL, *rd_ignore = NULL, *rd_invalid = NULL;
-
- if(!st_new) {
- st_new = rrdset_create_localhost(
- RRD_TYPE_NET_STAT_NETFILTER
- , RRD_TYPE_NET_STAT_CONNTRACK "_new"
- , NULL
- , RRD_TYPE_NET_STAT_CONNTRACK
- , NULL
- , "Connection Tracker New Connections"
- , "connections/s"
- , "nfacct"
- , NULL
- , 3001
- , nfstat_root.update_every
- , RRDSET_TYPE_LINE
- );
-
- rd_new = rrddim_add(st_new, nfstat_root.attr2name[CTA_STATS_NEW], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_ignore = rrddim_add(st_new, nfstat_root.attr2name[CTA_STATS_IGNORE], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_invalid = rrddim_add(st_new, nfstat_root.attr2name[CTA_STATS_INVALID], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
- else
- rrdset_next(st_new);
-
- rrddim_set_by_pointer(st_new, rd_new, (collected_number) nfstat_root.metrics[CTA_STATS_NEW]);
- rrddim_set_by_pointer(st_new, rd_ignore, (collected_number) nfstat_root.metrics[CTA_STATS_IGNORE]);
- rrddim_set_by_pointer(st_new, rd_invalid, (collected_number) nfstat_root.metrics[CTA_STATS_INVALID]);
-
- rrdset_done(st_new);
- }
-
- // ----------------------------------------------------------------
-
- {
- static RRDSET *st_changes = NULL;
- static RRDDIM *rd_inserted = NULL, *rd_deleted = NULL, *rd_delete_list = NULL;
-
- if(!st_changes) {
- st_changes = rrdset_create_localhost(
- RRD_TYPE_NET_STAT_NETFILTER
- , RRD_TYPE_NET_STAT_CONNTRACK "_changes"
- , NULL
- , RRD_TYPE_NET_STAT_CONNTRACK
- , NULL
- , "Connection Tracker Changes"
- , "changes/s"
- , "nfacct"
- , NULL
- , 3002
- , nfstat_root.update_every
- , RRDSET_TYPE_LINE
- );
- rrdset_flag_set(st_changes, RRDSET_FLAG_DETAIL);
-
- rd_inserted = rrddim_add(st_changes, nfstat_root.attr2name[CTA_STATS_INSERT], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_deleted = rrddim_add(st_changes, nfstat_root.attr2name[CTA_STATS_DELETE], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_delete_list = rrddim_add(st_changes, nfstat_root.attr2name[CTA_STATS_DELETE_LIST], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
- else
- rrdset_next(st_changes);
-
- rrddim_set_by_pointer(st_changes, rd_inserted, (collected_number) nfstat_root.metrics[CTA_STATS_INSERT]);
- rrddim_set_by_pointer(st_changes, rd_deleted, (collected_number) nfstat_root.metrics[CTA_STATS_DELETE]);
- rrddim_set_by_pointer(st_changes, rd_delete_list, (collected_number) nfstat_root.metrics[CTA_STATS_DELETE_LIST]);
-
- rrdset_done(st_changes);
- }
-
- // ----------------------------------------------------------------
-
- {
- static RRDSET *st_search = NULL;
- static RRDDIM *rd_searched = NULL, *rd_restarted = NULL, *rd_found = NULL;
-
- if(!st_search) {
- st_search = rrdset_create_localhost(
- RRD_TYPE_NET_STAT_NETFILTER
- , RRD_TYPE_NET_STAT_CONNTRACK "_search"
- , NULL
- , RRD_TYPE_NET_STAT_CONNTRACK
- , NULL
- , "Connection Tracker Searches"
- , "searches/s"
- , "nfacct"
- , NULL
- , 3010
- , nfstat_root.update_every
- , RRDSET_TYPE_LINE
- );
- rrdset_flag_set(st_search, RRDSET_FLAG_DETAIL);
-
- rd_searched = rrddim_add(st_search, nfstat_root.attr2name[CTA_STATS_SEARCHED], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_restarted = rrddim_add(st_search, nfstat_root.attr2name[CTA_STATS_SEARCH_RESTART], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_found = rrddim_add(st_search, nfstat_root.attr2name[CTA_STATS_FOUND], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
- else
- rrdset_next(st_search);
-
- rrddim_set_by_pointer(st_search, rd_searched, (collected_number) nfstat_root.metrics[CTA_STATS_SEARCHED]);
- rrddim_set_by_pointer(st_search, rd_restarted, (collected_number) nfstat_root.metrics[CTA_STATS_SEARCH_RESTART]);
- rrddim_set_by_pointer(st_search, rd_found, (collected_number) nfstat_root.metrics[CTA_STATS_FOUND]);
-
- rrdset_done(st_search);
- }
-
- // ----------------------------------------------------------------
-
- {
- static RRDSET *st_errors = NULL;
- static RRDDIM *rd_error = NULL, *rd_insert_failed = NULL, *rd_drop = NULL, *rd_early_drop = NULL;
-
- if(!st_errors) {
- st_errors = rrdset_create_localhost(
- RRD_TYPE_NET_STAT_NETFILTER
- , RRD_TYPE_NET_STAT_CONNTRACK "_errors"
- , NULL
- , RRD_TYPE_NET_STAT_CONNTRACK
- , NULL
- , "Connection Tracker Errors"
- , "events/s"
- , "nfacct"
- , NULL
- , 3005
- , nfstat_root.update_every
- , RRDSET_TYPE_LINE
- );
- rrdset_flag_set(st_errors, RRDSET_FLAG_DETAIL);
-
- rd_error = rrddim_add(st_errors, nfstat_root.attr2name[CTA_STATS_ERROR], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_insert_failed = rrddim_add(st_errors, nfstat_root.attr2name[CTA_STATS_INSERT_FAILED], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_drop = rrddim_add(st_errors, nfstat_root.attr2name[CTA_STATS_DROP], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_early_drop = rrddim_add(st_errors, nfstat_root.attr2name[CTA_STATS_EARLY_DROP], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
- else
- rrdset_next(st_errors);
-
- rrddim_set_by_pointer(st_errors, rd_error, (collected_number) nfstat_root.metrics[CTA_STATS_ERROR]);
- rrddim_set_by_pointer(st_errors, rd_insert_failed, (collected_number) nfstat_root.metrics[CTA_STATS_INSERT_FAILED]);
- rrddim_set_by_pointer(st_errors, rd_drop, (collected_number) nfstat_root.metrics[CTA_STATS_DROP]);
- rrddim_set_by_pointer(st_errors, rd_early_drop, (collected_number) nfstat_root.metrics[CTA_STATS_EARLY_DROP]);
-
- rrdset_done(st_errors);
- }
-
- // ----------------------------------------------------------------
-
- {
- static RRDSET *st_expect = NULL;
- static RRDDIM *rd_new = NULL, *rd_created = NULL, *rd_deleted = NULL;
-
- if(!st_expect) {
- st_expect = rrdset_create_localhost(
- RRD_TYPE_NET_STAT_NETFILTER
- , RRD_TYPE_NET_STAT_CONNTRACK "_expect"
- , NULL
- , RRD_TYPE_NET_STAT_CONNTRACK
- , NULL
- , "Connection Tracker Expectations"
- , "expectations/s"
- , "nfacct"
- , NULL
- , 3003
- , nfstat_root.update_every
- , RRDSET_TYPE_LINE
- );
- rrdset_flag_set(st_expect, RRDSET_FLAG_DETAIL);
-
- rd_created = rrddim_add(st_expect, nfstat_root.attr2name_exp[CTA_STATS_EXP_CREATE], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_deleted = rrddim_add(st_expect, nfstat_root.attr2name_exp[CTA_STATS_EXP_DELETE], NULL, -1, 1, RRD_ALGORITHM_INCREMENTAL);
- rd_new = rrddim_add(st_expect, nfstat_root.attr2name_exp[CTA_STATS_EXP_NEW], NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
- else
- rrdset_next(st_expect);
-
- rrddim_set_by_pointer(st_expect, rd_created, (collected_number) nfstat_root.metrics_exp[CTA_STATS_EXP_CREATE]);
- rrddim_set_by_pointer(st_expect, rd_deleted, (collected_number) nfstat_root.metrics_exp[CTA_STATS_EXP_DELETE]);
- rrddim_set_by_pointer(st_expect, rd_new, (collected_number) nfstat_root.metrics_exp[CTA_STATS_EXP_NEW]);
-
- rrdset_done(st_expect);
- }
-
-}
-
-#endif // HAVE_LINUX_NETFILTER_NFNETLINK_CONNTRACK_H
-
-
-// ----------------------------------------------------------------------------
-// DO_NFACCT - collect netfilter accounting statistics via netlink
-
-#ifdef HAVE_LIBNETFILTER_ACCT
-#define DO_NFACCT 1
-
-#include <libnetfilter_acct/libnetfilter_acct.h>
-
-struct nfacct_data {
- char *name;
- uint32_t hash;
-
- uint64_t pkts;
- uint64_t bytes;
-
- RRDDIM *rd_bytes;
- RRDDIM *rd_packets;
-
- int updated;
-
- struct nfacct_data *next;
-};
-
-static struct {
- int update_every;
- char *buf;
- size_t buf_size;
- struct mnl_socket *mnl;
- struct nlmsghdr *nlh;
- unsigned int seq;
- uint32_t portid;
- struct nfacct *nfacct_buffer;
- struct nfacct_data *nfacct_metrics;
-} nfacct_root = {
- .update_every = 1,
- .buf = NULL,
- .buf_size = 0,
- .mnl = NULL,
- .nlh = NULL,
- .seq = 0,
- .portid = 0,
- .nfacct_buffer = NULL,
- .nfacct_metrics = NULL
-};
-
-static inline struct nfacct_data *nfacct_data_get(const char *name, uint32_t hash) {
- struct nfacct_data *d = NULL, *last = NULL;
- for(d = nfacct_root.nfacct_metrics; d ; last = d, d = d->next) {
- if(unlikely(d->hash == hash && !strcmp(d->name, name)))
- return d;
- }
-
- d = callocz(1, sizeof(struct nfacct_data));
- d->name = strdupz(name);
- d->hash = hash;
-
- if(!last) {
- d->next = nfacct_root.nfacct_metrics;
- nfacct_root.nfacct_metrics = d;
- }
- else {
- d->next = last->next;
- last->next = d;
- }
-
- return d;
-}
-
-static int nfacct_init(int update_every) {
- nfacct_root.update_every = update_every;
-
- nfacct_root.buf_size = mnl_buffer_size();
- nfacct_root.buf = mallocz(nfacct_root.buf_size);
-
- nfacct_root.nfacct_buffer = nfacct_alloc();
- if(!nfacct_root.nfacct_buffer) {
- error("nfacct.plugin: nfacct_alloc() failed.");
- return 0;
- }
-
- nfacct_root.seq = (unsigned int)now_realtime_sec() - 1;
-
- nfacct_root.mnl = mnl_socket_open(NETLINK_NETFILTER);
- if(!nfacct_root.mnl) {
- error("nfacct.plugin: mnl_socket_open() failed");
- return 1;
- }
-
- if(mnl_socket_bind(nfacct_root.mnl, 0, MNL_SOCKET_AUTOPID) < 0) {
- error("nfacct.plugin: mnl_socket_bind() failed");
- return 1;
- }
- nfacct_root.portid = mnl_socket_get_portid(nfacct_root.mnl);
-
- return 0;
-}
-
-static void nfacct_cleanup() {
- if(nfacct_root.mnl) {
- mnl_socket_close(nfacct_root.mnl);
- nfacct_root.mnl = NULL;
- }
-
- if(nfacct_root.nfacct_buffer) {
- nfacct_free(nfacct_root.nfacct_buffer);
- nfacct_root.nfacct_buffer = NULL;
- }
-
- freez(nfacct_root.buf);
- nfacct_root.buf = NULL;
- nfacct_root.buf_size = 0;
-
- // FIXME: cleanup the metrics linked list
-}
-
-static int nfacct_callback(const struct nlmsghdr *nlh, void *data) {
- (void)data;
-
- if(nfacct_nlmsg_parse_payload(nlh, nfacct_root.nfacct_buffer) < 0) {
- error("NFACCT: nfacct_nlmsg_parse_payload() failed.");
- return MNL_CB_OK;
- }
-
- const char *name = nfacct_attr_get_str(nfacct_root.nfacct_buffer, NFACCT_ATTR_NAME);
- uint32_t hash = simple_hash(name);
-
- struct nfacct_data *d = nfacct_data_get(name, hash);
-
- d->pkts = nfacct_attr_get_u64(nfacct_root.nfacct_buffer, NFACCT_ATTR_PKTS);
- d->bytes = nfacct_attr_get_u64(nfacct_root.nfacct_buffer, NFACCT_ATTR_BYTES);
- d->updated = 1;
-
- return MNL_CB_OK;
-}
-
-static int nfacct_collect() {
- // mark all old metrics as not-updated
- struct nfacct_data *d;
- for(d = nfacct_root.nfacct_metrics; d ; d = d->next)
- d->updated = 0;
-
- // prepare the request
- nfacct_root.seq++;
- nfacct_root.nlh = nfacct_nlmsg_build_hdr(nfacct_root.buf, NFNL_MSG_ACCT_GET, NLM_F_DUMP, (uint32_t)nfacct_root.seq);
- if(!nfacct_root.nlh) {
- error("NFACCT: nfacct_nlmsg_build_hdr() failed");
- return 1;
- }
-
- // send the request
- if(mnl_socket_sendto(nfacct_root.mnl, nfacct_root.nlh, nfacct_root.nlh->nlmsg_len) < 0) {
- error("NFACCT: mnl_socket_sendto() failed");
- return 1;
- }
-
- // get the reply
- ssize_t ret;
- while((ret = mnl_socket_recvfrom(nfacct_root.mnl, nfacct_root.buf, nfacct_root.buf_size)) > 0) {
- if(mnl_cb_run(
- nfacct_root.buf
- , (size_t)ret
- , nfacct_root.seq
- , nfacct_root.portid
- , nfacct_callback
- , NULL
- ) <= 0)
- break;
- }
-
- // verify we run without issues
- if (ret == -1) {
- error("NFACCT: error communicating with kernel. This plugin can only work when netdata runs as root.");
- return 1;
- }
-
- return 0;
-}
-
-static void nfacct_send_metrics() {
- static RRDSET *st_bytes = NULL, *st_packets = NULL;
-
- if(!nfacct_root.nfacct_metrics) return;
- struct nfacct_data *d;
-
- if(!st_packets) {
- st_packets = rrdset_create_localhost(
- "netfilter"
- , "nfacct_packets"
- , NULL
- , "nfacct"
- , NULL
- , "Netfilter Accounting Packets"
- , "packets/s"
- , "nfacct"
- , NULL
- , 3206
- , nfacct_root.update_every
- , RRDSET_TYPE_STACKED
- );
- }
- else rrdset_next(st_packets);
-
- for(d = nfacct_root.nfacct_metrics; d ; d = d->next) {
- if(likely(d->updated)) {
- if(unlikely(!d->rd_packets))
- d->rd_packets = rrddim_add(
- st_packets
- , d->name
- , NULL
- , 1
- , nfacct_root.update_every
- , RRD_ALGORITHM_INCREMENTAL
- );
-
- rrddim_set_by_pointer(
- st_packets
- , d->rd_packets
- , (collected_number)d->pkts
- );
- }
- }
-
- rrdset_done(st_packets);
-
- // ----------------------------------------------------------------
-
- st_bytes = rrdset_find_bytype_localhost("netfilter", "nfacct_bytes");
- if(!st_bytes) {
- st_bytes = rrdset_create_localhost(
- "netfilter"
- , "nfacct_bytes"
- , NULL
- , "nfacct"
- , NULL
- , "Netfilter Accounting Bandwidth"
- , "kilobytes/s"
- , "nfacct"
- , NULL
- , 3207
- , nfacct_root.update_every
- , RRDSET_TYPE_STACKED
- );
- }
- else rrdset_next(st_bytes);
-
- for(d = nfacct_root.nfacct_metrics; d ; d = d->next) {
- if(likely(d->updated)) {
- if(unlikely(!d->rd_bytes))
- d->rd_bytes = rrddim_add(
- st_bytes
- , d->name
- , NULL
- , 1
- , 1000 * nfacct_root.update_every
- , RRD_ALGORITHM_INCREMENTAL
- );
-
- rrddim_set_by_pointer(
- st_bytes
- , d->rd_bytes
- , (collected_number)d->bytes
- );
- }
- }
-
- rrdset_done(st_bytes);
-}
-
-#endif // HAVE_LIBNETFILTER_ACCT
-#endif // HAVE_LIBMNL
-
-// ----------------------------------------------------------------------------
-
-static void nfacct_main_cleanup(void *ptr) {
- struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
- static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
- info("cleaning up...");
-
-#ifdef DO_NFACCT
- nfacct_cleanup();
-#endif
-
-#ifdef DO_NFSTAT
- nfstat_cleanup();
-#endif
-
- static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
-}
-
-void *nfacct_main(void *ptr) {
- netdata_thread_cleanup_push(nfacct_main_cleanup, ptr);
-
- int update_every = (int)config_get_number("plugin:netfilter", "update every", localhost->rrd_update_every);
- if(update_every < localhost->rrd_update_every)
- update_every = localhost->rrd_update_every;
-
-#ifdef DO_NFACCT
- int nfacct = !nfacct_init(update_every);
-#endif
-
-#ifdef DO_NFSTAT
- int nfstat = !nfstat_init(update_every);
-#endif
-
- // ------------------------------------------------------------------------
-
- usec_t step = update_every * USEC_PER_SEC;
- heartbeat_t hb;
- heartbeat_init(&hb);
- for(;;) {
- heartbeat_dt_usec(&hb);
- heartbeat_next(&hb, step);
-
- if(unlikely(netdata_exit)) break;
-
-#ifdef DO_NFACCT
- if(likely(nfacct)) {
- nfacct = !nfacct_collect();
-
- if(likely(nfacct))
- nfacct_send_metrics();
- }
-#endif
-
-#ifdef DO_NFSTAT
- if(likely(nfstat)) {
- nfstat = !nfstat_collect();
-
- if(likely(nfstat))
- nfstat_send_metrics();
- }
-#endif
- }
-
- netdata_thread_cleanup_pop(1);
- return NULL;
-}
-
-#endif // INTERNAL_PLUGIN_NFACCT