12 #include <libmnl/libmnl.h>
13 #include <libnetfilter_acct/libnetfilter_acct.h>
15 #include "global_statistics.h"
20 #include "plugin_proc.h"
26 struct nfacct *nfacct;
32 struct mynfacct data[];
33 } *nfacct_list = NULL;
35 static int nfacct_callback(const struct nlmsghdr *nlh, void *data) {
38 if(!nfacct_list || nfacct_list->len == nfacct_list->size) {
39 int size = (nfacct_list) ? nfacct_list->size : 0;
40 int len = (nfacct_list) ? nfacct_list->len : 0;
43 info("nfacct.plugin: increasing nfacct_list to size %d", size);
45 nfacct_list = realloc(nfacct_list, sizeof(struct nfacct_list) + (sizeof(struct mynfacct) * size));
47 error("nfacct.plugin: cannot allocate nfacct_list.");
51 nfacct_list->data[len].nfacct = nfacct_alloc();
52 if(!nfacct_list->data[size - 1].nfacct) {
53 error("nfacct.plugin: nfacct_alloc() failed.");
59 nfacct_list->size = size;
60 nfacct_list->len = len;
63 if(nfacct_nlmsg_parse_payload(nlh, nfacct_list->data[nfacct_list->len].nfacct) < 0) {
64 error("nfacct.plugin: nfacct_nlmsg_parse_payload() failed.");
68 nfacct_list->data[nfacct_list->len].name = nfacct_attr_get_str(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_NAME);
69 nfacct_list->data[nfacct_list->len].pkts = nfacct_attr_get_u64(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_PKTS);
70 nfacct_list->data[nfacct_list->len].bytes = nfacct_attr_get_u64(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_BYTES);
76 void *nfacct_main(void *ptr) {
79 info("NFACCT thread created with task id %d", gettid());
81 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
82 error("nfacct.plugin: Cannot set pthread cancel type to DEFERRED.");
84 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
85 error("nfacct.plugin: Cannot set pthread cancel state to ENABLE.");
87 char buf[MNL_SOCKET_BUFFER_SIZE];
88 struct mnl_socket *nl = NULL;
89 struct nlmsghdr *nlh = NULL;
90 unsigned int seq = 0, portid = 0;
94 nl = mnl_socket_open(NETLINK_NETFILTER);
96 error("nfacct.plugin: mnl_socket_open() failed");
100 if(mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
101 mnl_socket_close(nl);
102 error("nfacct.plugin: mnl_socket_bind() failed");
105 portid = mnl_socket_get_portid(nl);
107 // ------------------------------------------------------------------------
109 struct timeval last, now;
110 unsigned long long usec = 0, susec = 0;
113 gettimeofday(&last, NULL);
115 // ------------------------------------------------------------------------
120 nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_GET, NLM_F_DUMP, seq);
122 mnl_socket_close(nl);
123 error("nfacct.plugin: nfacct_nlmsg_build_hdr() failed");
127 if(mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
128 error("nfacct.plugin: mnl_socket_send");
132 if(nfacct_list) nfacct_list->len = 0;
135 while((ret = mnl_socket_recvfrom(nl, buf, sizeof(buf))) > 0) {
136 if((ret = mnl_cb_run(buf, ret, seq, portid, nfacct_callback, NULL)) <= 0) break;
140 error("nfacct.plugin: error communicating with kernel.");
144 // --------------------------------------------------------------------
146 gettimeofday(&now, NULL);
147 usec = usecdiff(&now, &last) - susec;
148 debug(D_NFACCT_LOOP, "nfacct.plugin: last loop took %llu usec (worked for %llu, sleeped for %llu).", usec + susec, usec, susec);
150 if(usec < (rrd_update_every * 1000000ULL / 2ULL)) susec = (rrd_update_every * 1000000ULL) - usec;
151 else susec = rrd_update_every * 1000000ULL / 2ULL;
154 // --------------------------------------------------------------------
156 if(nfacct_list && nfacct_list->len) {
159 st = rrdset_find_bytype("nfacct", "packets");
161 st = rrdset_create("nfacct", "packets", NULL, "netfilter", "Netfilter Accounting Packets", "packets/s", 1006, rrd_update_every, RRDSET_TYPE_STACKED);
163 for(i = 0; i < nfacct_list->len ; i++)
164 rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);
166 else rrdset_next(st);
168 for(i = 0; i < nfacct_list->len ; i++) {
169 RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);
171 if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);
172 if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].pkts);
177 // ----------------------------------------------------------------
179 st = rrdset_find_bytype("nfacct", "bytes");
181 st = rrdset_create("nfacct", "bytes", NULL, "netfilter", "Netfilter Accounting Bandwidth", "kilobytes/s", 1007, rrd_update_every, RRDSET_TYPE_STACKED);
183 for(i = 0; i < nfacct_list->len ; i++)
184 rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);
186 else rrdset_next(st);
188 for(i = 0; i < nfacct_list->len ; i++) {
189 RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);
191 if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);
192 if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].bytes);
198 // --------------------------------------------------------------------
202 // copy current to last
203 bcopy(&now, &last, sizeof(struct timeval));
206 mnl_socket_close(nl);