+ 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"
+ , 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
+ );