FD.io VPP  v20.05.1-6-gf53edbc3b
Vector Packet Processing
syslog.c
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1 /*
2  * Copyright (c) 2018 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /**
16  * @file syslog.c
17  * RFC5424 syslog protocol implementation
18  */
19 
20 #include <unistd.h>
21 #include <vnet/fib/fib_table.h>
22 #include <vnet/ip/format.h>
23 #include <vnet/syslog/syslog.h>
24 #include <vnet/syslog/syslog_udp.h>
25 
26 #define SYSLOG_VERSION "1"
27 #define NILVALUE "-"
28 #define DEFAULT_UDP_PORT 514
29 #define DEFAULT_MAX_MSG_SIZE 480
30 
31 #define encode_priority(f, p) ((f << 3) | p)
32 
34 
35 /* format timestamp RFC5424 6.2.3. */
36 static u8 *
37 format_syslog_timestamp (u8 * s, va_list * args)
38 {
39  f64 timestamp = va_arg (*args, f64);
40  struct tm *tm;
41  word msec;
42 
43  time_t t = timestamp;
44  tm = gmtime (&t);
45  msec = 1e6 * (timestamp - t);
46  return format (s, "%4d-%02d-%02dT%02d:%02d:%02d.%06dZ", 1900 + tm->tm_year,
47  1 + tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min,
48  tm->tm_sec, msec);
49 }
50 
51 /* format header RFC5424 6.2. */
52 static u8 *
53 format_syslog_header (u8 * s, va_list * args)
54 {
56  syslog_header_t *h = va_arg (*args, syslog_header_t *);
57  u32 pri = encode_priority (h->facility, h->severity);
58 
59  return format (s, "<%d>%s %U %U %s %d %s", pri, SYSLOG_VERSION,
62  h->app_name ? h->app_name : NILVALUE, sm->procid,
63  h->msgid ? h->msgid : NILVALUE);
64 }
65 
66 /* format strucured data elements RFC5424 6.3. */
67 static u8 *
68 format_syslog_structured_data (u8 * s, va_list * args)
69 {
70  u8 **sds = va_arg (*args, u8 **);
71  int i;
72 
73  if (vec_len (sds))
74  {
75  for (i = 0; i < vec_len (sds); i++)
76  s = format (s, "[%v]", sds[i]);
77  }
78  /* if zero structured data elemts field must contain NILVALUE */
79  else
80  s = format (s, "%s", NILVALUE);
81 
82  return s;
83 }
84 
85 static u8 *
86 format_syslog_msg (u8 * s, va_list * args)
87 {
88  syslog_msg_t *m = va_arg (*args, syslog_msg_t *);
89 
90  s =
91  format (s, "%U %U", format_syslog_header, &m->header,
93  /* free-form message is optional */
94  if (m->msg)
95  s = format (s, " %s", m->msg);
96 
97  return s;
98 }
99 
100 void
102 {
103  u8 *sd;
104 
105  sd = format (0, "%s", sd_id);
106  vec_add1 (syslog_msg->structured_data, sd);
107  syslog_msg->curr_sd_index++;
108 }
109 
110 void
112  ...)
113 {
114  va_list va;
115  u8 *value;
116 
117  va_start (va, fmt);
118  value = va_format (0, fmt, &va);
119  va_end (va);
120  vec_terminate_c_string (value);
121 
122  syslog_msg->structured_data[syslog_msg->curr_sd_index] =
123  format (syslog_msg->structured_data[syslog_msg->curr_sd_index],
124  " %s=\"%s\"", name, value);
125  vec_free (value);
126 }
127 
128 void
130 {
131  va_list va;
132  u8 *msg;
133 
134  va_start (va, fmt);
135  msg = va_format (0, fmt, &va);
136  va_end (va);
138 
139  syslog_msg->msg = msg;
140 }
141 
142 void
144  syslog_severity_t severity, char *app_name, char *msgid)
145 {
146  syslog_main_t *sm = &syslog_main;
147  vlib_main_t *vm = sm->vlib_main;
148 
149  syslog_msg->header.facility = facility;
150  syslog_msg->header.severity = severity;
151  syslog_msg->header.timestamp = vlib_time_now (vm);
152  syslog_msg->header.app_name = app_name;
153  syslog_msg->header.msgid = msgid;
154  syslog_msg->structured_data = 0;
155  syslog_msg->curr_sd_index = ~0;
156  syslog_msg->msg = 0;
157 }
158 
159 int
161 {
162  syslog_main_t *sm = &syslog_main;
163  vlib_main_t *vm = sm->vlib_main;
164  u32 bi, msg_len, *to_next;
165  u8 *tmp;
166  vlib_buffer_t *b;
167  vlib_frame_t *f;
168  int i;
169 
170  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
171  return -1;
172 
173  b = vlib_get_buffer (vm, bi);
175 
176  /* one message per UDP datagram RFC5426 3.1. */
177  tmp = format (0, "%U", format_syslog_msg, syslog_msg);
178  msg_len = vec_len (tmp) - (vec_c_string_is_terminated (tmp) ? 1 : 0);
179  msg_len = msg_len < sm->max_msg_size ? msg_len : sm->max_msg_size;
180  clib_memcpy_fast (b->data, tmp, msg_len);
181  b->current_length = msg_len;
182  vec_free (tmp);
183 
184  vec_free (syslog_msg->msg);
185  for (i = 0; i < vec_len (syslog_msg->structured_data); i++)
186  vec_free (syslog_msg->structured_data[i]);
187  vec_free (syslog_msg->structured_data);
188 
189  syslog_add_udp_transport (vm, bi);
190 
192  to_next = vlib_frame_vector_args (f);
193  to_next[0] = bi;
194  f->n_vectors = 1;
196 
197  return 0;
198 }
199 
200 static uword
202 {
203  u32 *r = va_arg (*args, u32 *);
204 
205  if (0);
206 #define _(v,f,s) else if (unformat (input, s)) *r = SYSLOG_FACILITY_##f;
208 #undef _
209  else
210  return 0;
211 
212  return 1;
213 }
214 
215 static uword
217 {
218  u32 *r = va_arg (*args, u32 *);
219 
220  if (0);
221 #define _(v,f,s) else if (unformat (input, s)) *r = SYSLOG_SEVERITY_##f;
223 #undef _
224  else
225  return 0;
226 
227  return 1;
228 }
229 
230 static u8 *
231 format_syslog_severity (u8 * s, va_list * args)
232 {
233  u32 i = va_arg (*args, u32);
234  u8 *t = 0;
235 
236  switch (i)
237  {
238 #define _(v,f,str) case SYSLOG_SEVERITY_##f: t = (u8 *) str; break;
240 #undef _
241  default:
242  return format (s, "unknown");
243  }
244 
245  return format (s, "%s", t);
246 }
247 
249 set_syslog_sender (ip4_address_t * collector, u16 collector_port,
250  ip4_address_t * src, u32 vrf_id, u32 max_msg_size)
251 {
252  syslog_main_t *sm = &syslog_main;
253  u32 fib_index;
254 
255  if (max_msg_size < DEFAULT_MAX_MSG_SIZE)
256  return VNET_API_ERROR_INVALID_VALUE;
257 
258  if (collector->as_u32 == 0 || collector_port == 0 || src->as_u32 == 0)
259  return VNET_API_ERROR_INVALID_VALUE;
260 
261  if (vrf_id == ~0)
262  {
263  fib_index = ~0;
264  }
265  else
266  {
267  fib_index = fib_table_find (FIB_PROTOCOL_IP4, vrf_id);
268  if (fib_index == ~0)
269  return VNET_API_ERROR_NO_SUCH_FIB;
270  }
271 
272  sm->fib_index = fib_index;
273 
274  sm->collector.as_u32 = collector->as_u32;
275  sm->collector_port = (u16) collector_port;
276  sm->src_address.as_u32 = src->as_u32;
277  sm->max_msg_size = max_msg_size;
278 
279  return 0;
280 }
281 
282 static clib_error_t *
284  vlib_cli_command_t * cmd)
285 {
286  unformat_input_t _line_input, *line_input = &_line_input;
287  ip4_address_t collector, src;
288  u32 collector_port = DEFAULT_UDP_PORT;
289  u32 vrf_id = ~0;
290  u32 max_msg_size = DEFAULT_MAX_MSG_SIZE;
291  clib_error_t *ret = 0;
292 
293  collector.as_u32 = 0;
294  src.as_u32 = 0;
295 
296  /* Get a line of input. */
297  if (!unformat_user (input, unformat_line_input, line_input))
298  return 0;
299 
300  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
301  {
302  if (unformat
303  (line_input, "collector %U", unformat_ip4_address, &collector))
304  ;
305  else if (unformat (line_input, "port %u", &collector_port))
306  ;
307  else if (unformat (line_input, "src %U", unformat_ip4_address, &src))
308  ;
309  else if (unformat (line_input, "vrf-id %u", &vrf_id))
310  ;
311  else if (unformat (line_input, "max-msg-size %u", &max_msg_size))
312  ;
313  else
314  {
315  ret = clib_error_return (0, "Unknown input `%U'",
316  format_unformat_error, line_input);
317  goto done;
318  }
319  }
320 
321  if (collector.as_u32 == 0)
322  {
323  ret = clib_error_return (0, "collector address required");
324  goto done;
325  }
326 
327  if (src.as_u32 == 0)
328  {
329  ret = clib_error_return (0, "src address required");
330  goto done;
331  }
332 
333  if (max_msg_size < DEFAULT_MAX_MSG_SIZE)
334  {
335  ret =
336  clib_error_return (0, "too small max-msg-size value, minimum is %u",
338  goto done;
339  }
340 
341  vnet_api_error_t rv =
342  set_syslog_sender (&collector, collector_port, &src, vrf_id,
343  max_msg_size);
344 
345  if (rv)
346  ret =
347  clib_error_return (0, "set syslog sender failed rv=%d:%U", (int) rv,
349 
350 done:
351  unformat_free (line_input);
352  return ret;
353 }
354 
355 static clib_error_t *
357  vlib_cli_command_t * cmd)
358 {
359  syslog_main_t *sm = &syslog_main;
360  u32 vrf_id = ~0;
361 
362  if (sm->fib_index != ~0)
364 
365  if (syslog_is_enabled ())
366  vlib_cli_output (vm, "collector %U:%u, src address %U, VRF ID %d, "
367  "max-msg-size %u",
370  vrf_id, sm->max_msg_size);
371  else
372  vlib_cli_output (vm, "syslog sender is disabled");
373 
374  return 0;
375 }
376 
377 static clib_error_t *
379  vlib_cli_command_t * cmd)
380 {
381  unformat_input_t _line_input, *line_input = &_line_input;
383  syslog_facility_t facility;
384  syslog_severity_t severity;
385  clib_error_t *ret = 0;
386  u8 *app_name = 0, *msgid = 0, *sd_id = 0, *param_name = 0, *param_value = 0;
387 
388  if (!syslog_is_enabled ())
389  return 0;
390 
391  /* Get a line of input. */
392  if (!unformat_user (input, unformat_line_input, line_input))
393  return 0;
394 
395  if (unformat (line_input, "%U", unformat_syslog_facility, &facility))
396  {
397  if (unformat (line_input, "%U", unformat_syslog_severity, &severity))
398  {
399  if (syslog_severity_filter_block (severity))
400  goto done;
401 
402  if (unformat (line_input, "%s", &app_name))
403  {
404  if (unformat (line_input, "%s", &msgid))
405  {
406  syslog_msg_init (&syslog_msg, facility, severity,
407  (char *) app_name, (char *) msgid);
408  while (unformat (line_input, "sd-id %s", &sd_id))
409  {
410  syslog_msg_sd_init (&syslog_msg, (char *) sd_id);
411  while (unformat
412  (line_input, "sd-param %s %s", &param_name,
413  &param_value))
414  {
415  syslog_msg_add_sd_param (&syslog_msg,
416  (char *) param_name,
417  (char *) param_value);
418  vec_free (param_name);
419  vec_free (param_value);
420  }
421  vec_free (sd_id);
422  }
423  if (unformat_check_input (line_input) !=
425  syslog_msg_add_msg (&syslog_msg, "%U",
426  format_unformat_input, line_input);
427  syslog_msg_send (&syslog_msg);
428  }
429  else
430  {
431  ret =
432  clib_error_return (0, "Unknown input `%U'",
433  format_unformat_error, line_input);
434  goto done;
435  }
436  }
437  else
438  {
439  ret =
440  clib_error_return (0, "Unknown input `%U'",
441  format_unformat_error, line_input);
442  goto done;
443  }
444  }
445  else
446  {
447  ret =
448  clib_error_return (0, "Unknown input `%U'", format_unformat_error,
449  line_input);
450  goto done;
451  }
452  }
453  else
454  {
455  ret =
456  clib_error_return (0, "Unknown input `%U'", format_unformat_error,
457  line_input);
458  goto done;
459  }
460 
461 done:
462  vec_free (app_name);
463  vec_free (msgid);
464  unformat_free (line_input);
465  return ret;
466 }
467 
468 static clib_error_t *
470  vlib_cli_command_t * cmd)
471 {
472  unformat_input_t _line_input, *line_input = &_line_input;
473  syslog_main_t *sm = &syslog_main;
474  clib_error_t *ret = 0;
475 
476  /* Get a line of input. */
477  if (!unformat_user (input, unformat_line_input, line_input))
478  return 0;
479 
480  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
481  {
482  if (unformat
483  (line_input, "severity %U", unformat_syslog_severity,
484  &sm->severity_filter))
485  ;
486  else
487  {
488  ret = clib_error_return (0, "Unknown input `%U'",
489  format_unformat_error, line_input);
490  goto done;
491  }
492  }
493 
494 done:
495  unformat_free (line_input);
496  return ret;
497 }
498 
499 static clib_error_t *
501  vlib_cli_command_t * cmd)
502 {
503  syslog_main_t *sm = &syslog_main;
504 
505  vlib_cli_output (vm, "severity-filter: %U", format_syslog_severity,
506  sm->severity_filter);
507 
508  return 0;
509 }
510 
511 /* *INDENT-OFF* */
512 /*?
513  * Set syslog sender configuration.
514  *
515  * @cliexpar
516  * @parblock
517  *
518  * Example of how to configure syslog sender:
519  * @cliexcmd{set syslog sender collector 10.10.10.10 port 514 src 172.16.2.2}
520  * @endparblock
521 ?*/
522 VLIB_CLI_COMMAND (set_syslog_sender_command, static) = {
523  .path = "set syslog sender",
524  .short_help = "set syslog sender "
525  "collector <ip4-address> [port <port>] "
526  "src <ip4-address> [vrf-id <vrf-id>] "
527  "[max-msg-size <max-msg-size>]",
528  .function = set_syslog_sender_command_fn,
529 };
530 
531 /*?
532  * Show syslog sender configuration.
533  *
534  * @cliexpar
535  * @parblock
536  *
537  * Example of how to display syslog sender configuration:
538  * @cliexstart{show syslog sender}
539  * collector 10.10.10.10:514, src address 172.16.2.2, VRF ID 0, max-msg-size 480
540  * @cliexend
541  * @endparblock
542 ?*/
543 VLIB_CLI_COMMAND (show_syslog_sender_command, static) = {
544  .path = "show syslog sender",
545  .short_help = "show syslog sender",
546  .function = show_syslog_sender_command_fn,
547 };
548 
549 /*?
550  * This command generate test syslog message.
551  *
552  * @cliexpar
553  * @parblock
554  *
555  * Example of how to generate following syslog message
556  * '<em><180>1 2018-11-07T11:36:41.231759Z 172.16.1.1 test 10484 testMsg
557  * [exampleSDID@32473 eventID="1011" eventSource="App" iut="3"]
558  * this is message</em>'
559  * @cliexcmd{test syslog local6 warning test testMsg sd-id <!--
560  * --> exampleSDID@32473 sd-param eventID 1011 sd-param eventSource App <!--
561  * --> sd-param iut 3 this is message}
562  * @endparblock
563 ?*/
564 VLIB_CLI_COMMAND (test_syslog_command, static) = {
565  .path = "test syslog",
566  .short_help = "test syslog <facility> <severity> <app-name> <msgid> "
567  "[sd-id <sd-id> sd-param <name> <value>] [<message]",
568  .function = test_syslog_command_fn,
569 };
570 
571 /*?
572  * Set syslog severity filter, specified severity and greater match.
573  *
574  * @cliexpar
575  * @parblock
576  *
577  * Example of how to configure syslog severity filter:
578  * @cliexcmd{set syslog filter severity warning}
579  * @endparblock
580 ?*/
581 VLIB_CLI_COMMAND (set_syslog_filter_command, static) = {
582  .path = "set syslog filter",
583  .short_help = "set syslog filter severity <severity>",
584  .function = set_syslog_filter_command_fn,
585 };
586 
587 /*?
588  * Show syslog severity filter.
589  *
590  * @cliexpar
591  * @parblock
592  *
593  * Example of how to display syslog severity filter:
594  * @cliexstart{show syslog filter}
595  * severity-filter: warning
596  * @cliexend
597  * @endparblock
598 ?*/
599 VLIB_CLI_COMMAND (show_syslog_filter_command, static) = {
600  .path = "show syslog filter",
601  .short_help = "show syslog filter",
602  .function = show_syslog_filter_command_fn,
603 };
604 /* *INDENT-ON* */
605 
606 static clib_error_t *
608 {
609  syslog_main_t *sm = &syslog_main;
610  f64 vlib_time_0 = vlib_time_now (vm);
611  struct timeval timeval_0;
613 
614  sm->vlib_main = vm;
615  sm->vnet_main = vnet_get_main ();
616 
617  sm->procid = getpid ();
618  gettimeofday (&timeval_0, 0);
619  sm->time_offset =
620  (f64) timeval_0.tv_sec + (((f64) timeval_0.tv_usec) * 1e-6) - vlib_time_0;
621 
622  sm->collector.as_u32 = 0;
623  sm->src_address.as_u32 = 0;
626  sm->fib_index = ~0;
627  sm->severity_filter = SYSLOG_SEVERITY_INFORMATIONAL;
628 
629  ip4_lookup_node = vlib_get_node_by_name (vm, (u8 *) "ip4-lookup");
630  sm->ip4_lookup_node_index = ip4_lookup_node->index;
631 
632  return 0;
633 }
634 
636 
637 /*
638  * fd.io coding-style-patch-verification: ON
639  *
640  * Local Variables:
641  * eval: (c-set-style "gnu")
642  * End:
643  */
char * app_name
application that originated the message RFC5424 6.2.5.
Definition: syslog.h:89
u16 collector_port
UDP port number of remote host (destination)
Definition: syslog.h:121
vnet_api_error_t
Definition: api_errno.h:160
char * msgid
identify the type of message RFC5424 6.2.7.
Definition: syslog.h:92
f64 time_offset
time offset
Definition: syslog.h:115
#define vec_c_string_is_terminated(V)
Test whether a vector is a NULL terminated c-string.
Definition: vec.h:1080
void syslog_msg_add_msg(syslog_msg_t *syslog_msg, char *fmt,...)
Add free-form message RFC5424 6.4.
Definition: syslog.c:129
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
static u8 * format_syslog_msg(u8 *s, va_list *args)
Definition: syslog.c:86
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:291
u16 current_length
Nbytes between current data and the end of this buffer.
Definition: buffer.h:113
#define vec_terminate_c_string(V)
(If necessary) NULL terminate a vector containing a c-string.
Definition: vec.h:1088
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:590
vl_api_address_t src
Definition: gre.api:54
static clib_error_t * show_syslog_sender_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:356
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:989
syslog header
Definition: syslog.h:77
static uword unformat_syslog_facility(unformat_input_t *input, va_list *args)
Definition: syslog.c:201
u32 fib_index
FIB table index.
Definition: syslog.h:127
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:424
#define SYSLOG_VERSION
Definition: syslog.c:26
u8 * va_format(u8 *s, const char *fmt, va_list *va)
Definition: format.c:387
u32 max_msg_size
message size limit
Definition: syslog.h:130
vlib_main_t * vlib_main
convenience variables
Definition: syslog.h:139
static u8 * format_syslog_header(u8 *s, va_list *args)
Definition: syslog.c:53
#define DEFAULT_UDP_PORT
Definition: syslog.c:28
unsigned char u8
Definition: types.h:56
static clib_error_t * set_syslog_sender_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:283
double f64
Definition: types.h:142
vlib_node_registration_t ip4_lookup_node
(constructor) VLIB_REGISTER_NODE (ip4_lookup_node)
Definition: ip4_forward.c:104
format_function_t format_ip4_address
Definition: format.h:73
static clib_error_t * test_syslog_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:378
i64 word
Definition: types.h:111
unformat_function_t unformat_ip4_address
Definition: format.h:68
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:173
static clib_error_t * set_syslog_filter_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:469
static u8 * format_syslog_timestamp(u8 *s, va_list *args)
Definition: syslog.c:37
vlib_frame_t * vlib_get_frame_to_node(vlib_main_t *vm, u32 to_node_index)
Definition: main.c:182
#define clib_error_return(e, args...)
Definition: error.h:99
u32 procid
process ID RFC5424 6.2.6.
Definition: syslog.h:112
unsigned int u32
Definition: types.h:88
u32 fib_table_find(fib_protocol_t proto, u32 table_id)
Get the index of the FIB for a Table-ID.
Definition: fib_table.c:1097
unformat_function_t unformat_line_input
Definition: format.h:283
syslog_severity_t
Definition: syslog.h:69
vlib_node_t * vlib_get_node_by_name(vlib_main_t *vm, u8 *name)
Definition: node.c:45
int syslog_msg_send(syslog_msg_t *syslog_msg)
Send syslog message.
Definition: syslog.c:160
#define DEFAULT_MAX_MSG_SIZE
Definition: syslog.c:29
struct _unformat_input_t unformat_input_t
unsigned short u16
Definition: types.h:57
syslog_header_t header
header
Definition: syslog.h:99
void vlib_put_frame_to_node(vlib_main_t *vm, u32 to_node_index, vlib_frame_t *f)
Definition: main.c:216
static clib_error_t * show_syslog_filter_command_fn(vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
Definition: syslog.c:500
vec_header_t h
Definition: buffer.c:322
void syslog_add_udp_transport(vlib_main_t *vm, u32 bi)
Add UDP/IP transport layer by prepending it to existing data.
Definition: syslog_udp.c:25
syslog_facility_t
Definition: syslog.h:51
syslog protocol UDP transport layer declaration (RFC5426)
static uword unformat_syslog_severity(unformat_input_t *input, va_list *args)
Definition: syslog.c:216
static u8 * format_syslog_severity(u8 *s, va_list *args)
Definition: syslog.c:231
#define NILVALUE
Definition: syslog.c:27
void syslog_msg_sd_init(syslog_msg_t *syslog_msg, char *sd_id)
Initialize structured data element.
Definition: syslog.c:101
static u8 * format_vnet_api_errno(u8 *s, va_list *args)
Definition: api_errno.h:170
vlib_main_t * vm
Definition: in2out_ed.c:1599
u8 * msg
free-form message RFC5424 6.4.
Definition: syslog.h:106
RFC5424 syslog protocol declarations.
u8 * format_unformat_input(u8 *s, va_list *va)
Definition: unformat.c:143
syslog_severity_t severity_filter
severity filter (specified severity and greater match)
Definition: syslog.h:133
#define encode_priority(f, p)
Definition: syslog.c:31
#define UNFORMAT_END_OF_INPUT
Definition: format.h:145
u16 n_vectors
Definition: node.h:399
sll srl srl sll sra u16x4 i
Definition: vector_sse42.h:317
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:380
u8 data[]
Packet data.
Definition: buffer.h:181
static clib_error_t * syslog_init(vlib_main_t *vm)
Definition: syslog.c:607
string name[64]
Definition: ip.api:44
vnet_main_t * vnet_main
Definition: syslog.h:140
#define VLIB_CLI_COMMAND(x,...)
Definition: cli.h:152
u8 value
Definition: qos.api:54
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:689
void syslog_msg_init(syslog_msg_t *syslog_msg, syslog_facility_t facility, syslog_severity_t severity, char *app_name, char *msgid)
Initialize syslog message header.
Definition: syslog.c:143
u32 fib_table_get_table_id(u32 fib_index, fib_protocol_t proto)
Get the Table-ID of the FIB from protocol and index.
Definition: fib_table.c:1086
syslog_main_t syslog_main
Definition: syslog.c:33
syslog_facility_t facility
facility value, part of priority
Definition: syslog.h:80
ip4_address_t src_address
IPv4 address of sender (source)
Definition: syslog.h:124
syslog message
Definition: syslog.h:96
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define VLIB_BUFFER_TRACE_TRAJECTORY_INIT(b)
Definition: buffer.h:492
u32 ip4_lookup_node_index
ip4-lookup node index
Definition: syslog.h:136
VLIB buffer representation.
Definition: buffer.h:102
u64 uword
Definition: types.h:112
static void unformat_free(unformat_input_t *i)
Definition: format.h:163
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
Definition: node_funcs.h:244
f64 timestamp
message timestamp
Definition: syslog.h:86
static u8 * syslog_msg
Definition: main.c:95
u8 ** structured_data
structured data RFC5424 6.3.
Definition: syslog.h:102
f64 timestamp
Definition: vpe_types.api:27
void syslog_msg_add_sd_param(syslog_msg_t *syslog_msg, char *name, char *fmt,...)
Add structured data elemnt parameter name-value pair RFC5424 6.3.3.
Definition: syslog.c:111
u8 * format_unformat_error(u8 *s, va_list *va)
Definition: unformat.c:91
syslog_severity_t severity
severity value, part of priority
Definition: syslog.h:83
ip4_address_t collector
IPv4 address of remote host (destination)
Definition: syslog.h:118
u32 curr_sd_index
Definition: syslog.h:103
u32 vrf_id
Definition: nat.api:856
static int syslog_severity_filter_block(syslog_severity_t s)
Severity filter test.
Definition: syslog.h:211
static int syslog_is_enabled(void)
Check if syslog logging is enabled.
Definition: syslog.h:198
vnet_api_error_t set_syslog_sender(ip4_address_t *collector, u16 collector_port, ip4_address_t *src, u32 vrf_id, u32 max_msg_size)
Set syslog sender configuration.
Definition: syslog.c:249
static u8 * format_syslog_structured_data(u8 *s, va_list *args)
Definition: syslog.c:68
static u32 vlib_buffer_alloc(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Allocate buffers into supplied array.
Definition: buffer_funcs.h:677
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
Definition: buffer_funcs.h:85
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:978
static uword unformat_check_input(unformat_input_t *i)
Definition: format.h:171