FilesExpand file tree

 master

/

plugin_nfacct.c

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

222 lines (169 loc) · 6.18 KB

 master

/

plugin_nfacct.c

Copy path

Top

File metadata and controls

• Code
• Blame

222 lines (169 loc) · 6.18 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#ifdef INTERNAL_PLUGIN_NFACCT

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <dirent.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <unistd.h>

#include <time.h>

#include <errno.h>

#include <libmnl/libmnl.h>

#include <libnetfilter_acct/libnetfilter_acct.h>

#include "main.h"

#include "global_statistics.h"

#include "common.h"

#include "appconfig.h"

#include "log.h"

#include "rrd.h"

#include "plugin_proc.h"

struct mynfacct {

const char *name;

uint64_t pkts;

uint64_t bytes;

struct nfacct *nfacct;

};

struct nfacct_list {

int size;

int len;

struct mynfacct data[];

} *nfacct_list = NULL;

static int nfacct_callback(const struct nlmsghdr *nlh, void *data) {

if(data) {};

if(!nfacct_list || nfacct_list->len == nfacct_list->size) {

int size = (nfacct_list) ? nfacct_list->size : 0;

int len = (nfacct_list) ? nfacct_list->len : 0;

size++;

info("nfacct.plugin: increasing nfacct_list to size %d", size);

nfacct_list = realloc(nfacct_list, sizeof(struct nfacct_list) + (sizeof(struct mynfacct) * size));

if(!nfacct_list) {

error("nfacct.plugin: cannot allocate nfacct_list.");

return MNL_CB_OK;

}

nfacct_list->data[len].nfacct = nfacct_alloc();

if(!nfacct_list->data[size - 1].nfacct) {

error("nfacct.plugin: nfacct_alloc() failed.");

free(nfacct_list);

nfacct_list = NULL;

return MNL_CB_OK;

}

nfacct_list->size = size;

nfacct_list->len = len;

}

if(nfacct_nlmsg_parse_payload(nlh, nfacct_list->data[nfacct_list->len].nfacct) < 0) {

error("nfacct.plugin: nfacct_nlmsg_parse_payload() failed.");

return MNL_CB_OK;

}

nfacct_list->data[nfacct_list->len].name = nfacct_attr_get_str(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_NAME);

nfacct_list->data[nfacct_list->len].pkts = nfacct_attr_get_u64(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_PKTS);

nfacct_list->data[nfacct_list->len].bytes = nfacct_attr_get_u64(nfacct_list->data[nfacct_list->len].nfacct, NFACCT_ATTR_BYTES);

nfacct_list->len++;

return MNL_CB_OK;

}

void *nfacct_main(void *ptr) {

if(ptr) { ; }

info("NFACCT thread created with task id %d", gettid());

if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)

error("nfacct.plugin: Cannot set pthread cancel type to DEFERRED.");

if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)

error("nfacct.plugin: Cannot set pthread cancel state to ENABLE.");

char buf[MNL_SOCKET_BUFFER_SIZE];

struct mnl_socket *nl = NULL;

struct nlmsghdr *nlh = NULL;

unsigned int seq = 0, portid = 0;

seq = time(NULL) - 1;

nl = mnl_socket_open(NETLINK_NETFILTER);

if(!nl) {

error("nfacct.plugin: mnl_socket_open() failed");

pthread_exit(NULL);

return NULL;

}

if(mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {

mnl_socket_close(nl);

error("nfacct.plugin: mnl_socket_bind() failed");

pthread_exit(NULL);

return NULL;

}

portid = mnl_socket_get_portid(nl);

// ------------------------------------------------------------------------

struct timeval last, now;

unsigned long long usec = 0, susec = 0;

RRDSET *st = NULL;

gettimeofday(&last, NULL);

// ------------------------------------------------------------------------

while(1) {

if(unlikely(netdata_exit)) break;

seq++;

nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_GET, NLM_F_DUMP, seq);

if(!nlh) {

mnl_socket_close(nl);

error("nfacct.plugin: nfacct_nlmsg_build_hdr() failed");

pthread_exit(NULL);

return NULL;

}

if(mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {

error("nfacct.plugin: mnl_socket_send");

pthread_exit(NULL);

return NULL;

}

if(nfacct_list) nfacct_list->len = 0;

int ret;

while((ret = mnl_socket_recvfrom(nl, buf, sizeof(buf))) > 0) {

if((ret = mnl_cb_run(buf, ret, seq, portid, nfacct_callback, NULL)) <= 0) break;

}

if (ret == -1) {

error("nfacct.plugin: error communicating with kernel.");

pthread_exit(NULL);

return NULL;

}

// --------------------------------------------------------------------

gettimeofday(&now, NULL);

usec = usecdiff(&now, &last) - susec;

debug(D_NFACCT_LOOP, "nfacct.plugin: last loop took %llu usec (worked for %llu, sleeped for %llu).", usec + susec, usec, susec);

if(usec < (rrd_update_every * 1000000ULL / 2ULL)) susec = (rrd_update_every * 1000000ULL) - usec;

else susec = rrd_update_every * 1000000ULL / 2ULL;

// --------------------------------------------------------------------

if(nfacct_list && nfacct_list->len) {

int i;

st = rrdset_find_bytype("netfilter", "nfacct_packets");

if(!st) {

st = rrdset_create("netfilter", "nfacct_packets", NULL, "nfacct", NULL, "Netfilter Accounting Packets", "packets/s", 1006, rrd_update_every, RRDSET_TYPE_STACKED);

for(i = 0; i < nfacct_list->len ; i++)

rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);

}

else rrdset_next(st);

for(i = 0; i < nfacct_list->len ; i++) {

RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);

if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, rrd_update_every, RRDDIM_INCREMENTAL);

if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].pkts);

}

rrdset_done(st);

// ----------------------------------------------------------------

st = rrdset_find_bytype("netfilter", "nfacct_bytes");

if(!st) {

st = rrdset_create("netfilter", "nfacct_bytes", NULL, "nfacct", NULL, "Netfilter Accounting Bandwidth", "kilobytes/s", 1007, rrd_update_every, RRDSET_TYPE_STACKED);

for(i = 0; i < nfacct_list->len ; i++)

rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);

}

else rrdset_next(st);

for(i = 0; i < nfacct_list->len ; i++) {

RRDDIM *rd = rrddim_find(st, nfacct_list->data[i].name);

if(!rd) rd = rrddim_add(st, nfacct_list->data[i].name, NULL, 1, 1000 * rrd_update_every, RRDDIM_INCREMENTAL);

if(rd) rrddim_set_by_pointer(st, rd, nfacct_list->data[i].bytes);

}

rrdset_done(st);

}

// --------------------------------------------------------------------

usleep(susec);

// copy current to last

bcopy(&now, &last, sizeof(struct timeval));

}

mnl_socket_close(nl);

pthread_exit(NULL);

return NULL;

}

#endif