corosync  3.1.6
totemknet.c
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1 /*
2  * Copyright (c) 2016-2020 Red Hat, Inc.
3  *
4  * All rights reserved.
5  *
6  * Author: Christine Caulfield (ccaulfie@redhat.com)
7 
8  * This software licensed under BSD license, the text of which follows:
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * - Redistributions of source code must retain the above copyright notice,
14  * this list of conditions and the following disclaimer.
15  * - Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
17  * and/or other materials provided with the distribution.
18  * - Neither the name of the MontaVista Software, Inc. nor the names of its
19  * contributors may be used to endorse or promote products derived from this
20  * software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32  * THE POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #include <config.h>
36 
37 #include <assert.h>
38 #include <sys/mman.h>
39 #include <sys/types.h>
40 #include <sys/stat.h>
41 #include <sys/socket.h>
42 #include <netdb.h>
43 #include <sys/un.h>
44 #include <sys/ioctl.h>
45 #include <sys/param.h>
46 #include <netinet/in.h>
47 #include <net/ethernet.h>
48 #include <arpa/inet.h>
49 #include <unistd.h>
50 #include <fcntl.h>
51 #include <stdlib.h>
52 #include <stdio.h>
53 #include <errno.h>
54 #include <pthread.h>
55 #include <sched.h>
56 #include <time.h>
57 #include <sys/time.h>
58 #include <sys/poll.h>
59 #include <sys/uio.h>
60 #include <limits.h>
61 
62 #include <qb/qbdefs.h>
63 #include <qb/qbloop.h>
64 #ifdef HAVE_LIBNOZZLE
65 #include <libgen.h>
66 #include <libnozzle.h>
67 #endif
68 
69 #include <corosync/sq.h>
70 #include <corosync/swab.h>
71 #include <corosync/logsys.h>
72 #include <corosync/icmap.h>
73 #include <corosync/totem/totemip.h>
74 #include "totemknet.h"
75 
76 #include "main.h"
77 #include "util.h"
78 
79 #include <libknet.h>
81 
82 #ifndef MSG_NOSIGNAL
83 #define MSG_NOSIGNAL 0
84 #endif
85 
86 #ifdef HAVE_LIBNOZZLE
87 static int setup_nozzle(void *knet_context);
88 #endif
89 
90 /* Should match that used by cfg */
91 #define CFG_INTERFACE_STATUS_MAX_LEN 512
92 
94  struct crypto_instance *crypto_inst;
95 
96  qb_loop_t *poll_handle;
97 
98  knet_handle_t knet_handle;
99 
101 
102  void *context;
103 
105  void *context,
106  const void *msg,
107  unsigned int msg_len,
108  const struct sockaddr_storage *system_from);
109 
111  void *context,
112  const struct totem_ip_address *iface_address,
113  unsigned int link_no);
114 
116  void *context,
117  int net_mtu);
118 
120 
121  /*
122  * Function and data used to log messages
123  */
125 
127 
129 
131 
133 
135 
137 
139  int level,
140  int subsys,
141  const char *function,
142  const char *file,
143  int line,
144  const char *format,
145  ...)__attribute__((format(printf, 6, 7)));
146 
148 
149  char iov_buffer[KNET_MAX_PACKET_SIZE];
150 
152 
154 
156 
158 
160 
162 
164 
165  qb_loop_timer_handle timer_netif_check_timeout;
166 
167  qb_loop_timer_handle timer_merge_detect_timeout;
168 
170 
172 
173  int logpipes[2];
174  int knet_fd;
175 
176  pthread_mutex_t log_mutex;
177 #ifdef HAVE_LIBNOZZLE
178  char *nozzle_name;
179  char *nozzle_ipaddr;
180  char *nozzle_prefix;
181  char *nozzle_macaddr;
182  nozzle_t nozzle_handle;
183 #endif
184 };
185 
186 /* Awkward. But needed to get stats from knet */
188 
189 struct work_item {
190  const void *msg;
191  unsigned int msg_len;
193 };
194 
196  void *knet_context);
197 
198 
199 static int totemknet_configure_compression (
200  struct totemknet_instance *instance,
201  struct totem_config *totem_config);
202 
203 static void totemknet_start_merge_detect_timeout(
204  void *knet_context);
205 
206 static void totemknet_stop_merge_detect_timeout(
207  void *knet_context);
208 
209 static void log_flush_messages (
210  void *knet_context);
211 
212 static void totemknet_instance_initialize (struct totemknet_instance *instance)
213 {
214  int res;
215 
216  memset (instance, 0, sizeof (struct totemknet_instance));
217  res = pthread_mutex_init(&instance->log_mutex, NULL);
218  /*
219  * There is not too much else what can be done.
220  */
221  assert(res == 0);
222 }
223 
224 #define knet_log_printf_lock(level, subsys, function, file, line, format, args...) \
225 do { \
226  (void)pthread_mutex_lock(&instance->log_mutex); \
227  instance->totemknet_log_printf ( \
228  level, subsys, function, file, line, \
229  (const char *)format, ##args); \
230  (void)pthread_mutex_unlock(&instance->log_mutex); \
231 } while (0);
232 
233 #define knet_log_printf(level, format, args...) \
234 do { \
235  knet_log_printf_lock ( \
236  level, instance->totemknet_subsys_id, \
237  __FUNCTION__, __FILE__, __LINE__, \
238  (const char *)format, ##args); \
239 } while (0);
240 
241 #define libknet_log_printf(level, format, args...) \
242 do { \
243  knet_log_printf_lock ( \
244  level, instance->knet_subsys_id, \
245  __FUNCTION__, "libknet.h", __LINE__, \
246  (const char *)format, ##args); \
247 } while (0);
248 
249 #define KNET_LOGSYS_PERROR(err_num, level, fmt, args...) \
250 do { \
251  char _error_str[LOGSYS_MAX_PERROR_MSG_LEN]; \
252  const char *_error_ptr = qb_strerror_r(err_num, _error_str, sizeof(_error_str)); \
253  instance->totemknet_log_printf ( \
254  level, instance->totemknet_subsys_id, \
255  __FUNCTION__, __FILE__, __LINE__, \
256  fmt ": %s (%d)", ##args, _error_ptr, err_num); \
257  } while(0)
258 
259 
260 #ifdef HAVE_LIBNOZZLE
261 static inline int is_ether_addr_multicast(const uint8_t *addr)
262 {
263  return (addr[0] & 0x01);
264 }
265 static inline int is_ether_addr_zero(const uint8_t *addr)
266 {
267  return (!addr[0] && !addr[1] && !addr[2] && !addr[3] && !addr[4] && !addr[5]);
268 }
269 
270 static int ether_host_filter_fn(void *private_data,
271  const unsigned char *outdata,
272  ssize_t outdata_len,
273  uint8_t tx_rx,
274  knet_node_id_t this_host_id,
275  knet_node_id_t src_host_id,
276  int8_t *channel,
277  knet_node_id_t *dst_host_ids,
278  size_t *dst_host_ids_entries)
279 {
280  struct ether_header *eth_h = (struct ether_header *)outdata;
281  uint8_t *dst_mac = (uint8_t *)eth_h->ether_dhost;
282  uint16_t dst_host_id;
283 
284  if (is_ether_addr_zero(dst_mac))
285  return -1;
286 
287  if (is_ether_addr_multicast(dst_mac)) {
288  return 1;
289  }
290 
291  memmove(&dst_host_id, &dst_mac[4], 2);
292 
293  dst_host_ids[0] = ntohs(dst_host_id);
294  *dst_host_ids_entries = 1;
295 
296  return 0;
297 }
298 #endif
299 
300 static int dst_host_filter_callback_fn(void *private_data,
301  const unsigned char *outdata,
302  ssize_t outdata_len,
303  uint8_t tx_rx,
304  knet_node_id_t this_host_id,
305  knet_node_id_t src_host_id,
306  int8_t *channel,
307  knet_node_id_t *dst_host_ids,
308  size_t *dst_host_ids_entries)
309 {
310  struct totem_message_header *header = (struct totem_message_header *)outdata;
311  int res;
312 
313 #ifdef HAVE_LIBNOZZLE
314  if (*channel != 0) {
315  return ether_host_filter_fn(private_data,
316  outdata, outdata_len,
317  tx_rx,
318  this_host_id, src_host_id,
319  channel,
320  dst_host_ids,
321  dst_host_ids_entries);
322  }
323 #endif
324  if (header->target_nodeid) {
325  dst_host_ids[0] = header->target_nodeid;
326  *dst_host_ids_entries = 1;
327  res = 0; /* unicast message */
328  }
329  else {
330  *dst_host_ids_entries = 0;
331  res = 1; /* multicast message */
332  }
333  return res;
334 }
335 
336 static void socket_error_callback_fn(void *private_data, int datafd, int8_t channel, uint8_t tx_rx, int error, int errorno)
337 {
338  struct totemknet_instance *instance = (struct totemknet_instance *)private_data;
339 
340  knet_log_printf (LOGSYS_LEVEL_DEBUG, "Knet socket ERROR notification called: txrx=%d, error=%d, errorno=%d", tx_rx, error, errorno);
341  if ((error == -1 && errorno != EAGAIN) || (error == 0)) {
342  knet_handle_remove_datafd(instance->knet_handle, datafd);
343  }
344 }
345 
346 static void host_change_callback_fn(void *private_data, knet_node_id_t host_id, uint8_t reachable, uint8_t remote, uint8_t external)
347 {
348  struct totemknet_instance *instance = (struct totemknet_instance *)private_data;
349 
350  // TODO: what? if anything.
351  knet_log_printf (LOGSYS_LEVEL_DEBUG, "Knet host change callback. nodeid: " CS_PRI_NODE_ID " reachable: %d", host_id, reachable);
352 }
353 
354 static void pmtu_change_callback_fn(void *private_data, unsigned int data_mtu)
355 {
356  struct totemknet_instance *instance = (struct totemknet_instance *)private_data;
357  knet_log_printf (LOGSYS_LEVEL_DEBUG, "Knet pMTU change: %d", data_mtu);
358 
359  /* We don't need to tell corosync the actual knet MTU */
360 // instance->totemknet_mtu_changed(instance->context, data_mtu);
361 }
362 
364  void *knet_context,
365  const char *cipher_type,
366  const char *hash_type)
367 {
368  return (0);
369 }
370 
371 
372 static inline void ucast_sendmsg (
373  struct totemknet_instance *instance,
374  struct totem_ip_address *system_to,
375  const void *msg,
376  unsigned int msg_len)
377 {
378  int res = 0;
379  struct totem_message_header *header = (struct totem_message_header *)msg;
380  struct msghdr msg_ucast;
381  struct iovec iovec;
382 
383  header->target_nodeid = system_to->nodeid;
384 
385  iovec.iov_base = (void *)msg;
386  iovec.iov_len = msg_len;
387 
388  /*
389  * Build unicast message
390  */
391  memset(&msg_ucast, 0, sizeof(msg_ucast));
392  msg_ucast.msg_iov = (void *)&iovec;
393  msg_ucast.msg_iovlen = 1;
394 #ifdef HAVE_MSGHDR_CONTROL
395  msg_ucast.msg_control = 0;
396 #endif
397 #ifdef HAVE_MSGHDR_CONTROLLEN
398  msg_ucast.msg_controllen = 0;
399 #endif
400 #ifdef HAVE_MSGHDR_FLAGS
401  msg_ucast.msg_flags = 0;
402 #endif
403 #ifdef HAVE_MSGHDR_ACCRIGHTS
404  msg_ucast.msg_accrights = NULL;
405 #endif
406 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
407  msg_ucast.msg_accrightslen = 0;
408 #endif
409 
410  /*
411  * Transmit unicast message
412  * An error here is recovered by totemsrp
413  */
414 
415  res = sendmsg (instance->knet_fd, &msg_ucast, MSG_NOSIGNAL);
416  if (res < 0) {
418  "sendmsg(ucast) failed (non-critical)");
419  }
420 }
421 
422 static inline void mcast_sendmsg (
423  struct totemknet_instance *instance,
424  const void *msg,
425  unsigned int msg_len,
426  int only_active)
427 {
428  int res;
429  struct totem_message_header *header = (struct totem_message_header *)msg;
430  struct msghdr msg_mcast;
431  struct iovec iovec;
432 
433  iovec.iov_base = (void *)msg;
434  iovec.iov_len = msg_len;
435 
436  header->target_nodeid = 0;
437 
438  /*
439  * Build multicast message
440  */
441  memset(&msg_mcast, 0, sizeof(msg_mcast));
442  msg_mcast.msg_iov = (void *)&iovec;
443  msg_mcast.msg_iovlen = 1;
444 #ifdef HAVE_MSGHDR_CONTROL
445  msg_mcast.msg_control = 0;
446 #endif
447 #ifdef HAVE_MSGHDR_CONTROLLEN
448  msg_mcast.msg_controllen = 0;
449 #endif
450 #ifdef HAVE_MSGHDR_FLAGS
451  msg_mcast.msg_flags = 0;
452 #endif
453 #ifdef HAVE_MSGHDR_ACCRIGHTS
454  msg_mcast.msg_accrights = NULL;
455 #endif
456 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
457  msg_mcast.msg_accrightslen = 0;
458 #endif
459 
460 
461 // log_printf (LOGSYS_LEVEL_DEBUG, "totemknet: mcast_sendmsg. only_active=%d, len=%d", only_active, msg_len);
462 
463  res = sendmsg (instance->knet_fd, &msg_mcast, MSG_NOSIGNAL);
464  if (res < msg_len) {
465  knet_log_printf (LOGSYS_LEVEL_DEBUG, "totemknet: mcast_send sendmsg returned %d", res);
466  }
467 
468  if (!only_active || instance->send_merge_detect_message) {
469  /*
470  * Current message was sent to all nodes
471  */
473  instance->send_merge_detect_message = 0;
474  }
475 }
476 
477 static int node_compare(const void *aptr, const void *bptr)
478 {
479  uint16_t a,b;
480 
481  a = *(uint16_t *)aptr;
482  b = *(uint16_t *)bptr;
483 
484  return a > b;
485 }
486 
487 #ifndef OWN_INDEX_NONE
488 #define OWN_INDEX_NONE -1
489 #endif
490 
492  void *knet_context,
493  unsigned int nodeid,
494  struct totem_node_status *node_status)
495 {
496  int i;
497  int res = 0;
498  struct knet_link_status link_status;
499  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
500  struct knet_host_status knet_host_status;
501  uint8_t link_list[KNET_MAX_LINK];
502  size_t num_links;
503 
504  if (!instance->knet_handle) {
505  return CS_ERR_NOT_EXIST; /* Not using knet */
506  }
507 
508  if (!node_status) {
509  return CS_ERR_INVALID_PARAM;
510  }
511 
512  res = knet_host_get_status(instance->knet_handle,
513  nodeid,
514  &knet_host_status);
515  if (res) {
516  knet_log_printf (LOGSYS_LEVEL_WARNING, "knet_handle_get_host_status(%d) failed: %d", nodeid, res);
517  return (-1);
518  }
519  node_status->nodeid = nodeid;
520  node_status->reachable = knet_host_status.reachable;
521  node_status->remote = knet_host_status.remote;
522  node_status->external = knet_host_status.external;
523 
524 #ifdef HAVE_KNET_ONWIRE_VER
525  res = knet_handle_get_onwire_ver(instance->knet_handle,
526  nodeid,
527  &node_status->onwire_min,
528  &node_status->onwire_max,
529  &node_status->onwire_ver);
530  if (res) {
531  knet_log_printf (LOGSYS_LEVEL_WARNING, "knet_handle_get_onwire_ver(%d) failed: %d", nodeid, res);
532  return (-1);
533  }
534 #endif
535  /* Get link info */
536  res = knet_link_get_link_list(instance->knet_handle,
537  nodeid, link_list, &num_links);
538  if (res) {
539  knet_log_printf (LOGSYS_LEVEL_WARNING, "knet_link_get_link_list(%d) failed: %d", nodeid, res);
540  return (-1);
541  }
542 
543  /* node_status[] has been zeroed for us in totempg.c */
544  for (i=0; i < num_links; i++) {
545  if (!instance->totem_config->interfaces[link_list[i]].configured) {
546  continue;
547  }
548  res = knet_link_get_status(instance->knet_handle,
549  nodeid,
550  link_list[i],
551  &link_status,
552  sizeof(link_status));
553  if (res == 0) {
554  node_status->link_status[link_list[i]].enabled = link_status.enabled;
555  node_status->link_status[link_list[i]].connected = link_status.connected;
556  node_status->link_status[link_list[i]].dynconnected = link_status.dynconnected;
557  node_status->link_status[link_list[i]].mtu = link_status.mtu;
558  memcpy(node_status->link_status[link_list[i]].src_ipaddr, link_status.src_ipaddr, KNET_MAX_HOST_LEN);
559  memcpy(node_status->link_status[link_list[i]].dst_ipaddr, link_status.dst_ipaddr, KNET_MAX_HOST_LEN);
560  } else {
561  knet_log_printf (LOGSYS_LEVEL_WARNING, "knet_link_get_link_status(%d, %d) failed: %d", nodeid, link_list[i], res);
562  }
563  }
564  return res;
565 }
566 
567 
568 
569 int totemknet_ifaces_get (void *knet_context,
570  char ***status,
571  unsigned int *iface_count)
572 {
573  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
574  struct knet_link_status link_status;
575  knet_node_id_t host_list[KNET_MAX_HOST];
576  uint8_t link_list[KNET_MAX_LINK];
577  size_t num_hosts;
578  size_t num_links;
579  size_t link_idx;
580  int i,j;
581  char *ptr;
582  int res = 0;
583 
584  /*
585  * Don't do the whole 'link_info' bit if the caller just wants
586  * a count of interfaces.
587  */
588  if (status) {
589  int own_idx = OWN_INDEX_NONE;
590 
591  res = knet_host_get_host_list(instance->knet_handle,
592  host_list, &num_hosts);
593  if (res) {
594  return (-1);
595  }
596  qsort(host_list, num_hosts, sizeof(uint16_t), node_compare);
597 
598  for (j=0; j<num_hosts; j++) {
599  if (host_list[j] == instance->our_nodeid) {
600  own_idx = j;
601  break;
602  }
603  }
604 
605  for (i=0; i<INTERFACE_MAX; i++) {
606  memset(instance->link_status[i], 'd', CFG_INTERFACE_STATUS_MAX_LEN-1);
607  if (own_idx != OWN_INDEX_NONE) {
608  instance->link_status[i][own_idx] = 'n';
609  }
610  instance->link_status[i][num_hosts] = '\0';
611  }
612 
613  /* This is all a bit "inside-out" because "status" is a set of strings per link
614  * and knet orders things by host
615  */
616  for (j=0; j<num_hosts; j++) {
617  if (own_idx != OWN_INDEX_NONE && j == own_idx) {
618  continue ;
619  }
620 
621  res = knet_link_get_link_list(instance->knet_handle,
622  host_list[j], link_list, &num_links);
623  if (res) {
624  return (-1);
625  }
626 
627  link_idx = 0;
628  for (i=0; i < num_links; i++) {
629  /*
630  * Skip over links that are unconfigured to corosync. This is basically
631  * link0 if corosync isn't using it for comms, as we will still
632  * have it set up for loopback.
633  */
634  if (!instance->totem_config->interfaces[link_list[i]].configured) {
635  continue;
636  }
637  ptr = instance->link_status[link_idx++];
638 
639  res = knet_link_get_status(instance->knet_handle,
640  host_list[j],
641  link_list[i],
642  &link_status,
643  sizeof(link_status));
644  if (res == 0) {
645  ptr[j] = '0' + (link_status.enabled |
646  link_status.connected<<1 |
647  link_status.dynconnected<<2);
648  }
649  else {
651  "totemknet_ifaces_get: Cannot get link status: %s", strerror(errno));
652  ptr[j] = '?';
653  }
654  }
655  }
656  *status = instance->link_status;
657  }
658 
659  *iface_count = INTERFACE_MAX;
660 
661  return (res);
662 }
663 
665  void *knet_context)
666 {
667  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
668  int res = 0;
669  int i,j;
670  static knet_node_id_t nodes[KNET_MAX_HOST]; /* static to save stack */
671  uint8_t links[KNET_MAX_LINK];
672  size_t num_nodes;
673  size_t num_links;
674 
675  knet_log_printf(LOG_DEBUG, "totemknet: finalize");
676 
677  qb_loop_poll_del (instance->poll_handle, instance->logpipes[0]);
678  qb_loop_poll_del (instance->poll_handle, instance->knet_fd);
679 
680  /*
681  * Disable forwarding to make knet flush send queue. This ensures that the LEAVE message will be sent.
682  */
683  res = knet_handle_setfwd(instance->knet_handle, 0);
684  if (res) {
685  knet_log_printf (LOGSYS_LEVEL_CRIT, "totemknet: knet_handle_setfwd failed: %s", strerror(errno));
686  }
687 
688  res = knet_host_get_host_list(instance->knet_handle, nodes, &num_nodes);
689  if (res) {
690  knet_log_printf (LOGSYS_LEVEL_ERROR, "Cannot get knet node list for shutdown: %s", strerror(errno));
691  /* Crash out anyway */
692  goto finalise_error;
693  }
694 
695  /* Tidily shut down all nodes & links. */
696  for (i=0; i<num_nodes; i++) {
697 
698  res = knet_link_get_link_list(instance->knet_handle, nodes[i], links, &num_links);
699  if (res) {
700  knet_log_printf (LOGSYS_LEVEL_ERROR, "Cannot get knet link list for node " CS_PRI_NODE_ID ": %s", nodes[i], strerror(errno));
701  goto finalise_error;
702  }
703  for (j=0; j<num_links; j++) {
704  res = knet_link_set_enable(instance->knet_handle, nodes[i], links[j], 0);
705  if (res) {
706  knet_log_printf (LOGSYS_LEVEL_ERROR, "totemknet: knet_link_set_enable(node " CS_PRI_NODE_ID ", link %d) failed: %s", nodes[i], links[j], strerror(errno));
707  }
708  res = knet_link_clear_config(instance->knet_handle, nodes[i], links[j]);
709  if (res) {
710  knet_log_printf (LOGSYS_LEVEL_ERROR, "totemknet: knet_link_clear_config(node " CS_PRI_NODE_ID ", link %d) failed: %s", nodes[i], links[j], strerror(errno));
711  }
712  }
713  res = knet_host_remove(instance->knet_handle, nodes[i]);
714  if (res) {
715  knet_log_printf (LOGSYS_LEVEL_ERROR, "totemknet: knet_host_remove(node " CS_PRI_NODE_ID ") failed: %s", nodes[i], strerror(errno));
716  }
717  }
718 
719 finalise_error:
720  res = knet_handle_free(instance->knet_handle);
721  if (res) {
722  knet_log_printf (LOGSYS_LEVEL_CRIT, "totemknet: knet_handle_free failed: %s", strerror(errno));
723  }
724 
725  totemknet_stop_merge_detect_timeout(instance);
726 
727  log_flush_messages(instance);
728 
729  /*
730  * Error is deliberately ignored
731  */
732  (void)pthread_mutex_destroy(&instance->log_mutex);
733 
734  return (res);
735 }
736 
737 static int log_deliver_fn (
738  int fd,
739  int revents,
740  void *data)
741 {
742  struct totemknet_instance *instance = (struct totemknet_instance *)data;
743  char buffer[sizeof(struct knet_log_msg)*4];
744  char *bufptr = buffer;
745  int done = 0;
746  int len;
747 
748  len = read(fd, buffer, sizeof(buffer));
749  while (done < len) {
750  struct knet_log_msg *msg = (struct knet_log_msg *)bufptr;
751  switch (msg->msglevel) {
752  case KNET_LOG_ERR:
754  knet_log_get_subsystem_name(msg->subsystem),
755  msg->msg);
756  break;
757  case KNET_LOG_WARN:
759  knet_log_get_subsystem_name(msg->subsystem),
760  msg->msg);
761  break;
762  case KNET_LOG_INFO:
764  knet_log_get_subsystem_name(msg->subsystem),
765  msg->msg);
766  break;
767  case KNET_LOG_DEBUG:
769  knet_log_get_subsystem_name(msg->subsystem),
770  msg->msg);
771  break;
772  }
773  bufptr += sizeof(struct knet_log_msg);
774  done += sizeof(struct knet_log_msg);
775  }
776  return 0;
777 }
778 
779 static int data_deliver_fn (
780  int fd,
781  int revents,
782  void *data)
783 {
784  struct totemknet_instance *instance = (struct totemknet_instance *)data;
785  struct msghdr msg_hdr;
786  struct iovec iov_recv;
787  struct sockaddr_storage system_from;
788  ssize_t msg_len;
789  int truncated_packet;
790 
791  iov_recv.iov_base = instance->iov_buffer;
792  iov_recv.iov_len = KNET_MAX_PACKET_SIZE;
793 
794  msg_hdr.msg_name = &system_from;
795  msg_hdr.msg_namelen = sizeof (struct sockaddr_storage);
796  msg_hdr.msg_iov = &iov_recv;
797  msg_hdr.msg_iovlen = 1;
798 #ifdef HAVE_MSGHDR_CONTROL
799  msg_hdr.msg_control = 0;
800 #endif
801 #ifdef HAVE_MSGHDR_CONTROLLEN
802  msg_hdr.msg_controllen = 0;
803 #endif
804 #ifdef HAVE_MSGHDR_FLAGS
805  msg_hdr.msg_flags = 0;
806 #endif
807 #ifdef HAVE_MSGHDR_ACCRIGHTS
808  msg_hdr.msg_accrights = NULL;
809 #endif
810 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
811  msg_hdr.msg_accrightslen = 0;
812 #endif
813 
814  msg_len = recvmsg (fd, &msg_hdr, MSG_NOSIGNAL | MSG_DONTWAIT);
815  if (msg_len <= 0) {
816  return (0);
817  }
818 
819  truncated_packet = 0;
820 
821 #ifdef HAVE_MSGHDR_FLAGS
822  if (msg_hdr.msg_flags & MSG_TRUNC) {
823  truncated_packet = 1;
824  }
825 #else
826  /*
827  * We don't have MSGHDR_FLAGS, but we can (hopefully) safely make assumption that
828  * if bytes_received == KNET_MAX_PACKET_SIZE then packet is truncated
829  */
830  if (bytes_received == KNET_MAX_PACKET_SIZE) {
831  truncated_packet = 1;
832  }
833 #endif
834 
835  if (truncated_packet) {
837  "Received too big message. This may be because something bad is happening"
838  "on the network (attack?), or you tried join more nodes than corosync is"
839  "compiled with (%u) or bug in the code (bad estimation of "
840  "the KNET_MAX_PACKET_SIZE). Dropping packet.", PROCESSOR_COUNT_MAX);
841  return (0);
842  }
843 
844  /*
845  * Handle incoming message
846  */
847  instance->totemknet_deliver_fn (
848  instance->context,
849  instance->iov_buffer,
850  msg_len,
851  &system_from);
852 
853  return (0);
854 }
855 
856 static void timer_function_netif_check_timeout (
857  void *data)
858 {
859  struct totemknet_instance *instance = (struct totemknet_instance *)data;
860  int i;
861 
862  for (i=0; i < INTERFACE_MAX; i++) {
863  if (!instance->totem_config->interfaces[i].configured) {
864  continue;
865  }
866  instance->totemknet_iface_change_fn (instance->context,
867  &instance->my_ids[i],
868  i);
869  }
870 }
871 
872 static void knet_set_access_list_config(struct totemknet_instance *instance)
873 {
874 #ifdef HAVE_KNET_ACCESS_LIST
875  uint32_t value;
876  cs_error_t err;
877 
879  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet_enable access list: %d", value);
880 
881  err = knet_handle_enable_access_lists(instance->knet_handle, value);
882  if (err) {
883  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_access_lists failed");
884  }
885 #endif
886 }
887 
888 
889 /* NOTE: this relies on the fact that totem_reload_notify() is called first */
890 static void totemknet_refresh_config(
891  int32_t event,
892  const char *key_name,
893  struct icmap_notify_value new_val,
894  struct icmap_notify_value old_val,
895  void *user_data)
896 {
897  uint8_t reloading;
898  uint32_t value;
899  uint32_t link_no;
900  size_t num_nodes;
901  knet_node_id_t host_ids[KNET_MAX_HOST];
902  int i;
903  int err;
904  struct totemknet_instance *instance = (struct totemknet_instance *)user_data;
905 
906  ENTER();
907 
908  /*
909  * If a full reload is in progress then don't do anything until it's done and
910  * can reconfigure it all atomically
911  */
912  if (icmap_get_uint8("config.totemconfig_reload_in_progress", &reloading) == CS_OK && reloading) {
913  return;
914  }
915 
916  knet_set_access_list_config(instance);
917 
918  if (icmap_get_uint32("totem.knet_pmtud_interval", &value) == CS_OK) {
919 
921  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet_pmtud_interval now %d", value);
922  err = knet_handle_pmtud_setfreq(instance->knet_handle, instance->totem_config->knet_pmtud_interval);
923  if (err) {
924  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_pmtud_setfreq failed");
925  }
926  }
927 
928  /* Configure link parameters for each node */
929  err = knet_host_get_host_list(instance->knet_handle, host_ids, &num_nodes);
930  if (err != 0) {
931  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_get_host_list failed");
932  }
933 
934  for (i=0; i<num_nodes; i++) {
935  for (link_no = 0; link_no < INTERFACE_MAX; link_no++) {
936  if (host_ids[i] == instance->our_nodeid || !instance->totem_config->interfaces[link_no].configured) {
937  continue;
938  }
939 
940  err = knet_link_set_ping_timers(instance->knet_handle, host_ids[i], link_no,
941  instance->totem_config->interfaces[link_no].knet_ping_interval,
942  instance->totem_config->interfaces[link_no].knet_ping_timeout,
943  instance->totem_config->interfaces[link_no].knet_ping_precision);
944  if (err) {
945  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_ping_timers for node " CS_PRI_NODE_ID " link %d failed", host_ids[i], link_no);
946  }
947  err = knet_link_set_pong_count(instance->knet_handle, host_ids[i], link_no,
948  instance->totem_config->interfaces[link_no].knet_pong_count);
949  if (err) {
950  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_pong_count for node " CS_PRI_NODE_ID " link %d failed",host_ids[i], link_no);
951  }
952  err = knet_link_set_priority(instance->knet_handle, host_ids[i], link_no,
953  instance->totem_config->interfaces[link_no].knet_link_priority);
954  if (err) {
955  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_priority for node " CS_PRI_NODE_ID " link %d failed", host_ids[i], link_no);
956  }
957 
958  }
959  }
960 
961  LEAVE();
962 }
963 
964 static void totemknet_add_config_notifications(struct totemknet_instance *instance)
965 {
966  icmap_track_t icmap_track_totem = NULL;
967  icmap_track_t icmap_track_reload = NULL;
968 
969  ENTER();
970 
971  icmap_track_add("totem.",
973  totemknet_refresh_config,
974  instance,
975  &icmap_track_totem);
976 
977  icmap_track_add("config.totemconfig_reload_in_progress",
979  totemknet_refresh_config,
980  instance,
981  &icmap_track_reload);
982 
983  LEAVE();
984 }
985 
986 static int totemknet_is_crypto_enabled(const struct totemknet_instance *instance)
987 {
988 
989  return (!(strcmp(instance->totem_config->crypto_cipher_type, "none") == 0 &&
990  strcmp(instance->totem_config->crypto_hash_type, "none") == 0));
991 
992 }
993 
994 static int totemknet_set_knet_crypto(struct totemknet_instance *instance)
995 {
996  struct knet_handle_crypto_cfg crypto_cfg;
997  int res;
998 
999  /* These have already been validated */
1000  memcpy(crypto_cfg.crypto_model, instance->totem_config->crypto_model, sizeof(crypto_cfg.crypto_model));
1001  memcpy(crypto_cfg.crypto_cipher_type, instance->totem_config->crypto_cipher_type, sizeof(crypto_cfg.crypto_model));
1002  memcpy(crypto_cfg.crypto_hash_type, instance->totem_config->crypto_hash_type, sizeof(crypto_cfg.crypto_model));
1003  memcpy(crypto_cfg.private_key, instance->totem_config->private_key, instance->totem_config->private_key_len);
1004  crypto_cfg.private_key_len = instance->totem_config->private_key_len;
1005 
1006 #ifdef HAVE_KNET_CRYPTO_RECONF
1007 
1008  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Configuring crypto %s/%s/%s on index %d",
1009  crypto_cfg.crypto_model,
1010  crypto_cfg.crypto_cipher_type,
1011  crypto_cfg.crypto_hash_type,
1012  instance->totem_config->crypto_index
1013  );
1014 
1015  /* If crypto is being disabled we need to explicitly allow cleartext traffic in knet */
1016  if (!totemknet_is_crypto_enabled(instance)) {
1017  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_ALLOW_CLEAR_TRAFFIC);
1018  if (res) {
1019  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_rx_clear_traffic(ALLOW) failed %s", strerror(errno));
1020  }
1021  }
1022 
1023  /* use_config will be called later when all nodes are synced */
1024  res = knet_handle_crypto_set_config(instance->knet_handle, &crypto_cfg, instance->totem_config->crypto_index);
1025  if (res == -1) {
1026  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config (index %d) failed: %s", instance->totem_config->crypto_index, strerror(errno));
1027  goto exit_error;
1028  }
1029  if (res == -2) {
1030  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config (index %d) failed: -2", instance->totem_config->crypto_index);
1031  goto exit_error;
1032  }
1033 #else
1034  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Configuring crypto %s/%s/%s",
1035  crypto_cfg.crypto_model,
1036  crypto_cfg.crypto_cipher_type,
1037  crypto_cfg.crypto_hash_type
1038  );
1039 
1040  res = knet_handle_crypto(instance->knet_handle, &crypto_cfg);
1041  if (res == -1) {
1042  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto failed: %s", strerror(errno));
1043  goto exit_error;
1044  }
1045  if (res == -2) {
1046  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto failed: -2");
1047  goto exit_error;
1048  }
1049 #endif
1050 
1051 
1052 exit_error:
1053  return res;
1054 }
1055 
1056 /*
1057  * Create an instance
1058  */
1060  qb_loop_t *poll_handle,
1061  void **knet_context,
1062  struct totem_config *totem_config,
1063  totemsrp_stats_t *stats,
1064  void *context,
1065 
1066  void (*deliver_fn) (
1067  void *context,
1068  const void *msg,
1069  unsigned int msg_len,
1070  const struct sockaddr_storage *system_from),
1071 
1072  void (*iface_change_fn) (
1073  void *context,
1074  const struct totem_ip_address *iface_address,
1075  unsigned int link_no),
1076 
1077  void (*mtu_changed) (
1078  void *context,
1079  int net_mtu),
1080 
1081  void (*target_set_completed) (
1082  void *context))
1083 {
1084  struct totemknet_instance *instance;
1085  char *tmp_str;
1086  int8_t channel=0;
1087  int allow_knet_handle_fallback=0;
1088  int res;
1089  int i;
1090 
1091  instance = malloc (sizeof (struct totemknet_instance));
1092  if (instance == NULL) {
1093  return (-1);
1094  }
1095 
1096  totemknet_instance_initialize (instance);
1097 
1098  instance->totem_config = totem_config;
1099 
1100  /*
1101  * Configure logging
1102  */
1103  instance->totemknet_log_level_security = 1; //totem_config->totem_logging_configuration.log_level_security;
1110 
1111  instance->knet_subsys_id = _logsys_subsys_create("KNET", "libknet.h");
1112 
1113  /*
1114  * Initialize local variables for totemknet
1115  */
1116 
1117  instance->our_nodeid = instance->totem_config->node_id;
1118 
1119  for (i=0; i< INTERFACE_MAX; i++) {
1120  totemip_copy(&instance->my_ids[i], &totem_config->interfaces[i].bindnet);
1121  instance->my_ids[i].nodeid = instance->our_nodeid;
1122  instance->ip_port[i] = totem_config->interfaces[i].ip_port;
1123 
1124  /* Needed for totemsrp */
1126  }
1127 
1128  instance->poll_handle = poll_handle;
1129 
1130  instance->context = context;
1131  instance->totemknet_deliver_fn = deliver_fn;
1132 
1133  instance->totemknet_iface_change_fn = iface_change_fn;
1134 
1135  instance->totemknet_mtu_changed = mtu_changed;
1136 
1137  instance->totemknet_target_set_completed = target_set_completed;
1138 
1139  instance->loopback_link = 0;
1140 
1141  res = pipe(instance->logpipes);
1142  if (res == -1) {
1143  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "failed to create pipe for instance->logpipes");
1144  goto exit_error;
1145  }
1146  if (fcntl(instance->logpipes[0], F_SETFL, O_NONBLOCK) == -1 ||
1147  fcntl(instance->logpipes[1], F_SETFL, O_NONBLOCK) == -1) {
1148  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "failed to set O_NONBLOCK flag for instance->logpipes");
1149  goto exit_error;
1150  }
1151 
1152  if (icmap_get_string("system.allow_knet_handle_fallback", &tmp_str) == CS_OK) {
1153  if (strcmp(tmp_str, "yes") == 0) {
1154  allow_knet_handle_fallback = 1;
1155  }
1156  free(tmp_str);
1157  }
1158 
1159 #if defined(KNET_API_VER) && (KNET_API_VER == 2)
1160  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, KNET_HANDLE_FLAG_PRIVILEGED);
1161 #else
1162  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG);
1163 #endif
1164 
1165  if (allow_knet_handle_fallback && !instance->knet_handle && errno == ENAMETOOLONG) {
1166  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_new failed, trying unprivileged");
1167 #if defined(KNET_API_VER) && (KNET_API_VER == 2)
1168  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, 0);
1169 #else
1170  instance->knet_handle = knet_handle_new_ex(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, 0);
1171 #endif
1172  }
1173 
1174  if (!instance->knet_handle) {
1175  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "knet_handle_new failed");
1176  goto exit_error;
1177  }
1178 
1179  knet_set_access_list_config(instance);
1180 
1181  res = knet_handle_pmtud_setfreq(instance->knet_handle, instance->totem_config->knet_pmtud_interval);
1182  if (res) {
1183  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_pmtud_setfreq failed");
1184  }
1185  res = knet_handle_enable_filter(instance->knet_handle, instance, dst_host_filter_callback_fn);
1186  if (res) {
1187  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_filter failed");
1188  }
1189  res = knet_handle_enable_sock_notify(instance->knet_handle, instance, socket_error_callback_fn);
1190  if (res) {
1191  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_sock_notify failed");
1192  }
1193  res = knet_host_enable_status_change_notify(instance->knet_handle, instance, host_change_callback_fn);
1194  if (res) {
1195  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_host_enable_status_change_notify failed");
1196  }
1197  res = knet_handle_enable_pmtud_notify(instance->knet_handle, instance, pmtu_change_callback_fn);
1198  if (res) {
1199  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_pmtud_notify failed");
1200  }
1201  global_instance = instance;
1202 
1203  /* Get an fd into knet */
1204  instance->knet_fd = 0;
1205  res = knet_handle_add_datafd(instance->knet_handle, &instance->knet_fd, &channel);
1206  if (res) {
1207  knet_log_printf(LOG_DEBUG, "knet_handle_add_datafd failed: %s", strerror(errno));
1208  goto exit_error;
1209  }
1210 
1211  /* Enable crypto if requested */
1212 #ifdef HAVE_KNET_CRYPTO_RECONF
1213  if (totemknet_is_crypto_enabled(instance)) {
1214  res = totemknet_set_knet_crypto(instance);
1215  if (res == 0) {
1216  res = knet_handle_crypto_use_config(instance->knet_handle, totem_config->crypto_index);
1217  if (res) {
1218  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_use_config failed: %s", strerror(errno));
1219  goto exit_error;
1220  }
1221  } else {
1222  knet_log_printf(LOG_DEBUG, "Failed to set up knet crypto");
1223  goto exit_error;
1224  }
1225  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_DISALLOW_CLEAR_TRAFFIC);
1226  if (res) {
1227  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_rx_clear_traffic (DISALLOW) failed: %s", strerror(errno));
1228  goto exit_error;
1229  }
1230 
1231  } else {
1232  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_ALLOW_CLEAR_TRAFFIC);
1233  if (res) {
1234  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_rx_clear_traffic (ALLOW) failed: %s", strerror(errno));
1235  goto exit_error;
1236  }
1237  }
1238 #else
1239  if (totemknet_is_crypto_enabled(instance)) {
1240  res = totemknet_set_knet_crypto(instance);
1241  if (res) {
1242  knet_log_printf(LOG_DEBUG, "Failed to set up knet crypto");
1243  goto exit_error;
1244  }
1245  }
1246 #endif
1247 
1248  /* Set up compression */
1249  if (strcmp(totem_config->knet_compression_model, "none") != 0) {
1250  /* Not fatal, but will log */
1251  (void)totemknet_configure_compression(instance, totem_config);
1252  }
1253 
1254  knet_handle_setfwd(instance->knet_handle, 1);
1255 
1256  instance->link_mode = KNET_LINK_POLICY_PASSIVE;
1257  if (strcmp(instance->totem_config->link_mode, "active")==0) {
1258  instance->link_mode = KNET_LINK_POLICY_ACTIVE;
1259  }
1260  if (strcmp(instance->totem_config->link_mode, "rr")==0) {
1261  instance->link_mode = KNET_LINK_POLICY_RR;
1262  }
1263 
1264  for (i=0; i<INTERFACE_MAX; i++) {
1265  instance->link_status[i] = malloc(CFG_INTERFACE_STATUS_MAX_LEN);
1266  if (!instance->link_status[i]) {
1267  goto exit_error;
1268  }
1269  }
1270 
1271  qb_loop_poll_add (instance->poll_handle,
1272  QB_LOOP_MED,
1273  instance->logpipes[0],
1274  POLLIN, instance, log_deliver_fn);
1275 
1276  qb_loop_poll_add (instance->poll_handle,
1277  QB_LOOP_HIGH,
1278  instance->knet_fd,
1279  POLLIN, instance, data_deliver_fn);
1280 
1281  /*
1282  * Upper layer isn't ready to receive message because it hasn't
1283  * initialized yet. Add short timer to check the interfaces.
1284  */
1285  qb_loop_timer_add (instance->poll_handle,
1286  QB_LOOP_MED,
1287  100*QB_TIME_NS_IN_MSEC,
1288  (void *)instance,
1289  timer_function_netif_check_timeout,
1290  &instance->timer_netif_check_timeout);
1291 
1292  totemknet_start_merge_detect_timeout(instance);
1293 
1294  /* Start listening for config changes */
1295  totemknet_add_config_notifications(instance);
1296 
1297  /* Add stats keys to icmap */
1299 
1300  knet_log_printf (LOGSYS_LEVEL_INFO, "totemknet initialized");
1301  *knet_context = instance;
1302 
1303  return (0);
1304 
1305 exit_error:
1306  log_flush_messages(instance);
1307  free(instance);
1308  return (-1);
1309 }
1310 
1312 {
1313  /* Need to have space for a message AND a struct mcast in case of encapsulated messages */
1314  return malloc(KNET_MAX_PACKET_SIZE + 512);
1315 }
1316 
1318 {
1319  return free (ptr);
1320 }
1321 
1323  void *knet_context,
1324  int processor_count)
1325 {
1326  return (0);
1327 }
1328 
1330 {
1331  return (0);
1332 }
1333 
1335 {
1336  return (0);
1337 }
1338 
1340  void *knet_context,
1341  const void *msg,
1342  unsigned int msg_len)
1343 {
1344  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1345  int res = 0;
1346 
1347  ucast_sendmsg (instance, &instance->token_target, msg, msg_len);
1348 
1349  return (res);
1350 }
1352  void *knet_context,
1353  const void *msg,
1354  unsigned int msg_len)
1355 {
1356  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1357  int res = 0;
1358 
1359  mcast_sendmsg (instance, msg, msg_len, 0);
1360 
1361  return (res);
1362 }
1363 
1365  void *knet_context,
1366  const void *msg,
1367  unsigned int msg_len)
1368 {
1369  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1370  int res = 0;
1371 
1372  mcast_sendmsg (instance, msg, msg_len, 1);
1373 
1374  return (res);
1375 }
1376 
1377 
1379 {
1380  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1381  int res = 0;
1382 
1383  knet_log_printf(LOG_DEBUG, "totemknet: iface_check");
1384 
1385  return (res);
1386 }
1387 
1389 {
1390  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1391 
1392  knet_log_printf(LOG_DEBUG, "totemknet: Returning MTU of %d", totem_config->net_mtu);
1393 }
1394 
1396  void *knet_context,
1397  unsigned int nodeid)
1398 {
1399  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1400  int res = 0;
1401 
1402  instance->token_target.nodeid = nodeid;
1403 
1404  instance->totemknet_target_set_completed (instance->context);
1405 
1406  return (res);
1407 }
1408 
1410  void *knet_context)
1411 {
1412  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1413  unsigned int res;
1414  struct sockaddr_storage system_from;
1415  struct msghdr msg_hdr;
1416  struct iovec iov_recv;
1417  struct pollfd ufd;
1418  int nfds;
1419  int msg_processed = 0;
1420 
1421  iov_recv.iov_base = instance->iov_buffer;
1422  iov_recv.iov_len = KNET_MAX_PACKET_SIZE;
1423 
1424  msg_hdr.msg_name = &system_from;
1425  msg_hdr.msg_namelen = sizeof (struct sockaddr_storage);
1426  msg_hdr.msg_iov = &iov_recv;
1427  msg_hdr.msg_iovlen = 1;
1428 #ifdef HAVE_MSGHDR_CONTROL
1429  msg_hdr.msg_control = 0;
1430 #endif
1431 #ifdef HAVE_MSGHDR_CONTROLLEN
1432  msg_hdr.msg_controllen = 0;
1433 #endif
1434 #ifdef HAVE_MSGHDR_FLAGS
1435  msg_hdr.msg_flags = 0;
1436 #endif
1437 #ifdef HAVE_MSGHDR_ACCRIGHTS
1438  msg_msg_hdr.msg_accrights = NULL;
1439 #endif
1440 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
1441  msg_msg_hdr.msg_accrightslen = 0;
1442 #endif
1443 
1444  do {
1445  ufd.fd = instance->knet_fd;
1446  ufd.events = POLLIN;
1447  nfds = poll (&ufd, 1, 0);
1448  if (nfds == 1 && ufd.revents & POLLIN) {
1449  res = recvmsg (instance->knet_fd, &msg_hdr, MSG_NOSIGNAL | MSG_DONTWAIT);
1450  if (res != -1) {
1451  msg_processed = 1;
1452  } else {
1453  msg_processed = -1;
1454  }
1455  }
1456  } while (nfds == 1);
1457 
1458  return (msg_processed);
1459 }
1460 
1461 int totemknet_iface_set (void *knet_context,
1462  const struct totem_ip_address *local_addr,
1463  unsigned short ip_port,
1464  unsigned int iface_no)
1465 {
1466  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1467 
1468  totemip_copy(&instance->my_ids[iface_no], local_addr);
1469 
1470  knet_log_printf(LOG_INFO, "Configured link number %d: local addr: %s, port=%d", iface_no, totemip_print(local_addr), ip_port);
1471 
1472  instance->ip_port[iface_no] = ip_port;
1473 
1474  return 0;
1475 }
1476 
1477 
1479  void *knet_context,
1480  const struct totem_ip_address *local,
1481  const struct totem_ip_address *member,
1482  int link_no)
1483 {
1484  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1485  int err;
1486  int port = instance->ip_port[link_no];
1487  struct sockaddr_storage remote_ss;
1488  struct sockaddr_storage local_ss;
1489  int addrlen;
1490  int i;
1491  int host_found = 0;
1492  knet_node_id_t host_ids[KNET_MAX_HOST];
1493  size_t num_host_ids;
1494 
1495  /* Only create 1 loopback link and use link 0 */
1496  if (member->nodeid == instance->our_nodeid) {
1497  if (!instance->loopback_link) {
1498  link_no = 0;
1499  instance->loopback_link = 1;
1500  } else {
1501  /* Already done */
1502  return 0;
1503  }
1504  }
1505 
1506  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_add: " CS_PRI_NODE_ID " (%s), link=%d", member->nodeid, totemip_print(member), link_no);
1507  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: local: " CS_PRI_NODE_ID " (%s)", local->nodeid, totemip_print(local));
1508 
1509 
1510  /* Only add the host if it doesn't already exist in knet */
1511  err = knet_host_get_host_list(instance->knet_handle, host_ids, &num_host_ids);
1512  if (err) {
1513  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_get_host_list");
1514  return -1;
1515  }
1516  for (i=0; i<num_host_ids; i++) {
1517  if (host_ids[i] == member->nodeid) {
1518  host_found = 1;
1519  }
1520  }
1521 
1522  if (!host_found) {
1523  err = knet_host_add(instance->knet_handle, member->nodeid);
1524  if (err != 0 && errno != EEXIST) {
1525  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_add");
1526  return -1;
1527  }
1528  } else {
1529  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nodeid " CS_PRI_NODE_ID " already added", member->nodeid);
1530  }
1531 
1532 
1533  if (err == 0) {
1534  if (knet_host_set_policy(instance->knet_handle, member->nodeid, instance->link_mode)) {
1535  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_set_policy failed");
1536  return -1;
1537  }
1538  }
1539 
1540  memset(&local_ss, 0, sizeof(local_ss));
1541  memset(&remote_ss, 0, sizeof(remote_ss));
1542  /* Casts to remove const */
1543  totemip_totemip_to_sockaddr_convert((struct totem_ip_address *)member, port, &remote_ss, &addrlen);
1544  totemip_totemip_to_sockaddr_convert((struct totem_ip_address *)local, port, &local_ss, &addrlen);
1545 
1546  if (member->nodeid == instance->our_nodeid) {
1547  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: loopback link is %d\n", link_no);
1548 
1549  err = knet_link_set_config(instance->knet_handle, member->nodeid, link_no,
1550  KNET_TRANSPORT_LOOPBACK,
1551  &local_ss, &remote_ss, KNET_LINK_FLAG_TRAFFICHIPRIO);
1552  }
1553  else {
1554  err = knet_link_set_config(instance->knet_handle, member->nodeid, link_no,
1555  instance->totem_config->interfaces[link_no].knet_transport,
1556  &local_ss, &remote_ss, KNET_LINK_FLAG_TRAFFICHIPRIO);
1557  }
1558  if (err) {
1559  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_config failed");
1560  return -1;
1561  }
1562 
1563  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_add: Setting link prio to %d",
1564  instance->totem_config->interfaces[link_no].knet_link_priority);
1565 
1566  err = knet_link_set_priority(instance->knet_handle, member->nodeid, link_no,
1567  instance->totem_config->interfaces[link_no].knet_link_priority);
1568  if (err) {
1569  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_priority for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1570  }
1571 
1572  /* ping timeouts maybe 0 here for a newly added interface so we leave this till later, it will
1573  get done in totemknet_refresh_config */
1574  if (instance->totem_config->interfaces[link_no].knet_ping_interval != 0) {
1575  err = knet_link_set_ping_timers(instance->knet_handle, member->nodeid, link_no,
1576  instance->totem_config->interfaces[link_no].knet_ping_interval,
1577  instance->totem_config->interfaces[link_no].knet_ping_timeout,
1578  instance->totem_config->interfaces[link_no].knet_ping_precision);
1579  if (err) {
1580  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_ping_timers for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1581  }
1582  err = knet_link_set_pong_count(instance->knet_handle, member->nodeid, link_no,
1583  instance->totem_config->interfaces[link_no].knet_pong_count);
1584  if (err) {
1585  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_pong_count for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1586  }
1587  }
1588 
1589  err = knet_link_set_enable(instance->knet_handle, member->nodeid, link_no, 1);
1590  if (err) {
1591  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_enable for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1592  return -1;
1593  }
1594 
1595  /* register stats */
1596  stats_knet_add_member(member->nodeid, link_no);
1597  return (0);
1598 }
1599 
1601  void *knet_context,
1602  const struct totem_ip_address *token_target,
1603  int link_no)
1604 {
1605  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1606  int res;
1607  uint8_t link_list[KNET_MAX_LINK];
1608  size_t num_links;
1609 
1610  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_remove: " CS_PRI_NODE_ID ", link=%d", token_target->nodeid, link_no);
1611 
1612  /* Don't remove the link with the loopback on it until we shut down */
1613  if (token_target->nodeid == instance->our_nodeid) {
1614  return 0;
1615  }
1616 
1617  /* Tidy stats */
1619 
1620  /* Remove the link first */
1621  res = knet_link_set_enable(instance->knet_handle, token_target->nodeid, link_no, 0);
1622  if (res != 0) {
1623  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set enable(off) for nodeid " CS_PRI_NODE_ID ", link %d failed", token_target->nodeid, link_no);
1624  return res;
1625  }
1626 
1627  res = knet_link_clear_config(instance->knet_handle, token_target->nodeid, link_no);
1628  if (res != 0) {
1629  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_clear_config for nodeid " CS_PRI_NODE_ID ", link %d failed", token_target->nodeid, link_no);
1630  return res;
1631  }
1632 
1633  /* If this is the last link, then remove the node */
1634  res = knet_link_get_link_list(instance->knet_handle,
1635  token_target->nodeid, link_list, &num_links);
1636  if (res) {
1637  return (0); /* not really failure */
1638  }
1639 
1640  if (num_links == 0) {
1641  res = knet_host_remove(instance->knet_handle, token_target->nodeid);
1642  }
1643  return res;
1644 }
1645 
1647  void *knet_context)
1648 {
1649  return (0);
1650 }
1651 
1652 
1653 static int totemknet_configure_compression (
1654  struct totemknet_instance *instance,
1655  struct totem_config *totem_config)
1656 {
1657  struct knet_handle_compress_cfg compress_cfg;
1658  int res = 0;
1659 
1660  assert(strlen(totem_config->knet_compression_model) < sizeof(compress_cfg.compress_model));
1661  strcpy(compress_cfg.compress_model, totem_config->knet_compression_model);
1662 
1663  compress_cfg.compress_threshold = totem_config->knet_compression_threshold;
1664  compress_cfg.compress_level = totem_config->knet_compression_level;
1665 
1666  res = knet_handle_compress(instance->knet_handle, &compress_cfg);
1667  if (res) {
1668  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_handle_compress failed");
1669  }
1670  return res;
1671 }
1672 
1674  void *knet_context,
1675  struct totem_config *totem_config)
1676 {
1677  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1678  int res = 0;
1679 
1680  (void)totemknet_configure_compression(instance, totem_config);
1681 
1682 #ifdef HAVE_LIBNOZZLE
1683  /* Set up nozzle device(s). Return code is ignored, because inability
1684  * configure nozzle is not fatal problem, errors are logged and
1685  * there is not much else we can do */
1686  (void)setup_nozzle(instance);
1687 #endif
1688 
1690  /* Flip crypto_index */
1692  res = totemknet_set_knet_crypto(instance);
1693 
1694  knet_log_printf(LOG_INFO, "kronosnet crypto reconfigured on index %d: %s/%s/%s", totem_config->crypto_index,
1698  }
1699  return (res);
1700 }
1701 
1702 
1704  void *knet_context,
1705  struct totem_config *totem_config,
1707 {
1708 #ifdef HAVE_KNET_CRYPTO_RECONF
1709  int res;
1710  int config_to_use;
1711  int config_to_clear;
1712  struct knet_handle_crypto_cfg crypto_cfg;
1713  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1714 
1715  knet_log_printf(LOGSYS_LEVEL_DEBUG, "totemknet_crypto_reconfigure_phase %d, index=%d\n", phase, totem_config->crypto_index);
1716 
1717  switch (phase) {
1719  config_to_use = totem_config->crypto_index;
1720  if (!totemknet_is_crypto_enabled(instance)) {
1721  config_to_use = 0; /* we are clearing it */
1722  }
1723 
1724  /* Enable the new config on this node */
1725  res = knet_handle_crypto_use_config(instance->knet_handle, config_to_use);
1726  if (res == -1) {
1727  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_use_config %d failed: %s", config_to_use, strerror(errno));
1728  }
1729  break;
1730 
1732  /*
1733  * All nodes should now have the new config. clear the old one out
1734  * OR disable crypto entirely if that's what the new config insists on.
1735  */
1736  config_to_clear = 3-totem_config->crypto_index;
1737  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Clearing old knet crypto config %d\n", config_to_clear);
1738 
1739  strcpy(crypto_cfg.crypto_model, "none");
1740  strcpy(crypto_cfg.crypto_cipher_type, "none");
1741  strcpy(crypto_cfg.crypto_hash_type, "none");
1742  res = knet_handle_crypto_set_config(instance->knet_handle, &crypto_cfg, config_to_clear);
1743  if (res == -1) {
1744  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config to clear index %d failed: %s", config_to_clear, strerror(errno));
1745  }
1746  if (res == -2) {
1747  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config to clear index %d failed: -2", config_to_clear);
1748  }
1749 
1750  /* If crypto is enabled then disable all cleartext reception */
1751  if (totemknet_is_crypto_enabled(instance)) {
1752  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_DISALLOW_CLEAR_TRAFFIC);
1753  if (res) {
1754  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_rx_clear_traffic(DISALLOW) failed %s", strerror(errno));
1755  }
1756  }
1757  }
1758 #endif
1759  return 0;
1760 }
1761 
1763  void *knet_context)
1764 {
1765  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1766 
1767  (void) knet_handle_clear_stats(instance->knet_handle, KNET_CLEARSTATS_HANDLE_AND_LINK);
1768 }
1769 
1770 /* For the stats module */
1772  knet_node_id_t node, uint8_t link_no,
1773  struct knet_link_status *status)
1774 {
1775  int res;
1776  int ret = CS_OK;
1777 
1778  /* We are probably not using knet */
1779  if (!global_instance) {
1780  return CS_ERR_NOT_EXIST;
1781  }
1782 
1783  if (link_no >= INTERFACE_MAX) {
1784  return CS_ERR_NOT_EXIST; /* Invalid link number */
1785  }
1786 
1787  res = knet_link_get_status(global_instance->knet_handle, node, link_no, status, sizeof(struct knet_link_status));
1788  if (res) {
1789  switch (errno) {
1790  case EINVAL:
1791  ret = CS_ERR_INVALID_PARAM;
1792  break;
1793  case EBUSY:
1794  ret = CS_ERR_BUSY;
1795  break;
1796  case EDEADLK:
1797  ret = CS_ERR_TRY_AGAIN;
1798  break;
1799  default:
1800  ret = CS_ERR_LIBRARY;
1801  break;
1802  }
1803  }
1804 
1805  return (ret);
1806 }
1807 
1809  struct knet_handle_stats *stats)
1810 {
1811  int res;
1812 
1813  /* We are probably not using knet */
1814  if (!global_instance) {
1815  return CS_ERR_NOT_EXIST;
1816  }
1817 
1818  res = knet_handle_get_stats(global_instance->knet_handle, stats, sizeof(struct knet_handle_stats));
1819  if (res != 0) {
1820  return (qb_to_cs_error(-errno));
1821  }
1822 
1823  return CS_OK;
1824 }
1825 
1826 static void timer_function_merge_detect_timeout (
1827  void *data)
1828 {
1829  struct totemknet_instance *instance = (struct totemknet_instance *)data;
1830 
1831  if (instance->merge_detect_messages_sent_before_timeout == 0) {
1832  instance->send_merge_detect_message = 1;
1833  }
1834 
1836 
1837  totemknet_start_merge_detect_timeout(instance);
1838 }
1839 
1840 static void totemknet_start_merge_detect_timeout(
1841  void *knet_context)
1842 {
1843  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1844 
1845  qb_loop_timer_add(instance->poll_handle,
1846  QB_LOOP_MED,
1847  instance->totem_config->merge_timeout * 2 * QB_TIME_NS_IN_MSEC,
1848  (void *)instance,
1849  timer_function_merge_detect_timeout,
1850  &instance->timer_merge_detect_timeout);
1851 
1852 }
1853 
1854 static void totemknet_stop_merge_detect_timeout(
1855  void *knet_context)
1856 {
1857  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1858 
1859  qb_loop_timer_del(instance->poll_handle,
1860  instance->timer_merge_detect_timeout);
1861 }
1862 
1863 static void log_flush_messages (void *knet_context)
1864 {
1865  struct pollfd pfd;
1866  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1867  int cont;
1868 
1869  cont = 1;
1870 
1871  while (cont) {
1872  pfd.fd = instance->logpipes[0];
1873  pfd.events = POLLIN;
1874  pfd.revents = 0;
1875 
1876  if ((poll(&pfd, 1, 0) > 0) &&
1877  (pfd.revents & POLLIN) &&
1878  (log_deliver_fn(instance->logpipes[0], POLLIN, instance) == 0)) {
1879  cont = 1;
1880  } else {
1881  cont = 0;
1882  }
1883  }
1884 }
1885 
1886 
1887 #ifdef HAVE_LIBNOZZLE
1888 #define NOZZLE_NAME "nozzle.name"
1889 #define NOZZLE_IPADDR "nozzle.ipaddr"
1890 #define NOZZLE_PREFIX "nozzle.ipprefix"
1891 #define NOZZLE_MACADDR "nozzle.macaddr"
1892 
1893 #define NOZZLE_CHANNEL 1
1894 
1895 
1896 static char *get_nozzle_script_dir(void *knet_context)
1897 {
1898  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1899  char filename[PATH_MAX + FILENAME_MAX + 1];
1900  static char updown_dirname[PATH_MAX + FILENAME_MAX + 1];
1901  int res;
1902  const char *dirname_res;
1903 
1904  /*
1905  * Build script directory based on corosync.conf file location
1906  */
1907  res = snprintf(filename, sizeof(filename), "%s",
1909  if (res >= sizeof(filename)) {
1910  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nozzle up/down path too long");
1911  return NULL;
1912  }
1913 
1914  dirname_res = dirname(filename);
1915 
1916  res = snprintf(updown_dirname, sizeof(updown_dirname), "%s/%s",
1917  dirname_res, "updown.d");
1918  if (res >= sizeof(updown_dirname)) {
1919  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nozzle up/down path too long");
1920  return NULL;
1921  }
1922  return updown_dirname;
1923 }
1924 
1925 /*
1926  * Deliberately doesn't return the status as caller doesn't care.
1927  * The result will be logged though
1928  */
1929 static void run_nozzle_script(struct totemknet_instance *instance, int type, const char *typename)
1930 {
1931  int res;
1932  char *exec_string;
1933 
1934  res = nozzle_run_updown(instance->nozzle_handle, type, &exec_string);
1935  if (res == -1 && errno != ENOENT) {
1936  knet_log_printf (LOGSYS_LEVEL_INFO, "exec nozzle %s script failed: %s", typename, strerror(errno));
1937  } else if (res == -2) {
1938  knet_log_printf (LOGSYS_LEVEL_INFO, "nozzle %s script failed", typename);
1939  knet_log_printf (LOGSYS_LEVEL_INFO, "%s", exec_string);
1940  }
1941 }
1942 
1943 /*
1944  * Reparse IP address to add in our node ID
1945  * IPv6 addresses must end in '::'
1946  * IPv4 addresses must just be valid
1947  * '/xx' lengths are optional for IPv6, mandatory for IPv4
1948  *
1949  * Returns the modified IP address as a string to pass into libnozzle
1950  */
1951 static int reparse_nozzle_ip_address(struct totemknet_instance *instance,
1952  const char *input_addr,
1953  const char *prefix, int nodeid,
1954  char *output_addr, size_t output_len)
1955 {
1956  char *coloncolon;
1957  int bits;
1958  int max_prefix = 64;
1959  uint32_t nodeid_mask;
1960  uint32_t addr_mask;
1961  uint32_t masked_nodeid;
1962  struct in_addr *addr;
1963  struct totem_ip_address totemip;
1964 
1965  coloncolon = strstr(input_addr, "::");
1966  if (!coloncolon) {
1967  max_prefix = 30;
1968  }
1969 
1970  bits = atoi(prefix);
1971  if (bits < 8 || bits > max_prefix) {
1972  knet_log_printf(LOGSYS_LEVEL_ERROR, "nozzle IP address prefix must be >= 8 and <= %d (got %d)", max_prefix, bits);
1973  return -1;
1974  }
1975 
1976  /* IPv6 is easy */
1977  if (coloncolon) {
1978  memcpy(output_addr, input_addr, coloncolon-input_addr);
1979  sprintf(output_addr + (coloncolon-input_addr), "::%x", nodeid);
1980  return 0;
1981  }
1982 
1983  /* For IPv4 we need to parse the address into binary, mask off the required bits,
1984  * add in the masked_nodeid and 'print' it out again
1985  */
1986  nodeid_mask = UINT32_MAX & ((1<<(32 - bits)) - 1);
1987  addr_mask = UINT32_MAX ^ nodeid_mask;
1988  masked_nodeid = nodeid & nodeid_mask;
1989 
1990  if (totemip_parse(&totemip, input_addr, AF_INET)) {
1991  knet_log_printf(LOGSYS_LEVEL_ERROR, "Failed to parse IPv4 nozzle IP address");
1992  return -1;
1993  }
1994  addr = (struct in_addr *)&totemip.addr;
1995  addr->s_addr &= htonl(addr_mask);
1996  addr->s_addr |= htonl(masked_nodeid);
1997 
1998  inet_ntop(AF_INET, addr, output_addr, output_len);
1999  return 0;
2000 }
2001 
2002 static int create_nozzle_device(void *knet_context, const char *name,
2003  const char *ipaddr, const char *prefix,
2004  const char *macaddr)
2005 {
2006  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
2007  char device_name[IFNAMSIZ+1];
2008  size_t size = IFNAMSIZ;
2009  int8_t channel = NOZZLE_CHANNEL;
2010  nozzle_t nozzle_dev;
2011  int nozzle_fd;
2012  int res;
2013  char *updown_dir;
2014  char parsed_ipaddr[INET6_ADDRSTRLEN];
2015  char mac[19];
2016 
2017  memset(device_name, 0, size);
2018  memset(&mac, 0, sizeof(mac));
2019  strncpy(device_name, name, size);
2020 
2021  updown_dir = get_nozzle_script_dir(knet_context);
2022  knet_log_printf (LOGSYS_LEVEL_INFO, "nozzle script dir is %s", updown_dir);
2023 
2024  nozzle_dev = nozzle_open(device_name, size, updown_dir);
2025  if (!nozzle_dev) {
2026  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to init nozzle device %s: %s", device_name, strerror(errno));
2027  return -1;
2028  }
2029  instance->nozzle_handle = nozzle_dev;
2030 
2031  if (nozzle_set_mac(nozzle_dev, macaddr) < 0) {
2032  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add set nozzle MAC to %s: %s", mac, strerror(errno));
2033  goto out_clean;
2034  }
2035 
2036  if (reparse_nozzle_ip_address(instance, ipaddr, prefix, instance->our_nodeid, parsed_ipaddr, sizeof(parsed_ipaddr))) {
2037  /* Prints its own errors */
2038  goto out_clean;
2039  }
2040  knet_log_printf (LOGSYS_LEVEL_INFO, "Local nozzle IP address is %s / %d", parsed_ipaddr, atoi(prefix));
2041  if (nozzle_add_ip(nozzle_dev, parsed_ipaddr, prefix) < 0) {
2042  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add set nozzle IP addr to %s/%s: %s", parsed_ipaddr, prefix, strerror(errno));
2043  goto out_clean;
2044  }
2045 
2046  nozzle_fd = nozzle_get_fd(nozzle_dev);
2047  knet_log_printf (LOGSYS_LEVEL_INFO, "Opened '%s' on fd %d", device_name, nozzle_fd);
2048 
2049  res = knet_handle_add_datafd(instance->knet_handle, &nozzle_fd, &channel);
2050  if (res != 0) {
2051  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add nozzle FD to knet: %s", strerror(errno));
2052  goto out_clean;
2053  }
2054 
2055  run_nozzle_script(instance, NOZZLE_PREUP, "pre-up");
2056 
2057  res = nozzle_set_up(nozzle_dev);
2058  if (res != 0) {
2059  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to set nozzle interface UP: %s", strerror(errno));
2060  goto out_clean;
2061  }
2062  run_nozzle_script(instance, NOZZLE_UP, "up");
2063 
2064  return 0;
2065 
2066 out_clean:
2067  nozzle_close(nozzle_dev);
2068  return -1;
2069 }
2070 
2071 static int remove_nozzle_device(void *knet_context)
2072 {
2073  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
2074  int res;
2075  int datafd;
2076 
2077  res = knet_handle_get_datafd(instance->knet_handle, NOZZLE_CHANNEL, &datafd);
2078  if (res != 0) {
2079  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't find datafd for channel %d: %s", NOZZLE_CHANNEL, strerror(errno));
2080  return -1;
2081  }
2082 
2083  res = knet_handle_remove_datafd(instance->knet_handle, datafd);
2084  if (res != 0) {
2085  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't remove datafd for nozzle channel %d: %s", NOZZLE_CHANNEL, strerror(errno));
2086  return -1;
2087  }
2088 
2089  run_nozzle_script(instance, NOZZLE_DOWN, "pre-down");
2090  res = nozzle_set_down(instance->nozzle_handle);
2091  if (res != 0) {
2092  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't set nozzle device down: %s", strerror(errno));
2093  return -1;
2094  }
2095  run_nozzle_script(instance, NOZZLE_POSTDOWN, "post-down");
2096 
2097  res = nozzle_close(instance->nozzle_handle);
2098  if (res != 0) {
2099  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't close nozzle device: %s", strerror(errno));
2100  return -1;
2101  }
2102  knet_log_printf (LOGSYS_LEVEL_INFO, "Removed nozzle device");
2103  return 0;
2104 }
2105 
2106 static void free_nozzle(struct totemknet_instance *instance)
2107 {
2108  free(instance->nozzle_name);
2109  free(instance->nozzle_ipaddr);
2110  free(instance->nozzle_prefix);
2111  free(instance->nozzle_macaddr);
2112 
2113  instance->nozzle_name = instance->nozzle_ipaddr = instance->nozzle_prefix =
2114  instance->nozzle_macaddr = NULL;
2115 }
2116 
2117 static int setup_nozzle(void *knet_context)
2118 {
2119  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
2120  char *ipaddr_str = NULL;
2121  char *name_str = NULL;
2122  char *prefix_str = NULL;
2123  char *macaddr_str = NULL;
2124  char mac[32];
2125  int name_res;
2126  int macaddr_res;
2127  int res = -1;
2128 
2129  /*
2130  * Return value ignored on purpose. icmap_get_string changes
2131  * ipaddr_str/prefix_str only on success.
2132  */
2133  (void)icmap_get_string(NOZZLE_IPADDR, &ipaddr_str);
2134  (void)icmap_get_string(NOZZLE_PREFIX, &prefix_str);
2135  macaddr_res = icmap_get_string(NOZZLE_MACADDR, &macaddr_str);
2136  name_res = icmap_get_string(NOZZLE_NAME, &name_str);
2137 
2138  /* Is is being removed? */
2139  if (name_res == CS_ERR_NOT_EXIST && instance->nozzle_handle) {
2140  remove_nozzle_device(instance);
2141  free_nozzle(instance);
2142  goto out_free;
2143  }
2144 
2145  if (!name_str) {
2146  /* no nozzle */
2147  goto out_free;
2148  }
2149 
2150  if (!ipaddr_str) {
2151  knet_log_printf (LOGSYS_LEVEL_ERROR, "No IP address supplied for Nozzle device");
2152  goto out_free;
2153  }
2154 
2155  if (!prefix_str) {
2156  knet_log_printf (LOGSYS_LEVEL_ERROR, "No prefix supplied for Nozzle IP address");
2157  goto out_free;
2158  }
2159 
2160  if (macaddr_str && strlen(macaddr_str) != 17) {
2161  knet_log_printf (LOGSYS_LEVEL_ERROR, "macaddr for nozzle device is not in the correct format '%s'", macaddr_str);
2162  goto out_free;
2163  }
2164  if (!macaddr_str) {
2165  macaddr_str = (char*)"54:54:01:00:00:00";
2166  }
2167 
2168  if (instance->nozzle_name &&
2169  (strcmp(name_str, instance->nozzle_name) == 0) &&
2170  (strcmp(ipaddr_str, instance->nozzle_ipaddr) == 0) &&
2171  (strcmp(prefix_str, instance->nozzle_prefix) == 0) &&
2172  (instance->nozzle_macaddr == NULL ||
2173  strcmp(macaddr_str, instance->nozzle_macaddr) == 0)) {
2174  /* Nothing has changed */
2175  knet_log_printf (LOGSYS_LEVEL_DEBUG, "Nozzle device info not changed");
2176  goto out_free;
2177  }
2178 
2179  /* Add nodeid into MAC address */
2180  memcpy(mac, macaddr_str, 12);
2181  snprintf(mac+12, sizeof(mac) - 13, "%02x:%02x",
2182  instance->our_nodeid >> 8,
2183  instance->our_nodeid & 0xFF);
2184  knet_log_printf (LOGSYS_LEVEL_INFO, "Local nozzle MAC address is %s", mac);
2185 
2186  if (name_res == CS_OK && name_str) {
2187  /* Reconfigure */
2188  if (instance->nozzle_name) {
2189  remove_nozzle_device(instance);
2190  free_nozzle(instance);
2191  }
2192 
2193  res = create_nozzle_device(knet_context, name_str, ipaddr_str, prefix_str,
2194  mac);
2195 
2196  instance->nozzle_name = strdup(name_str);
2197  instance->nozzle_ipaddr = strdup(ipaddr_str);
2198  instance->nozzle_prefix = strdup(prefix_str);
2199  instance->nozzle_macaddr = strdup(macaddr_str);
2200  if (!instance->nozzle_name || !instance->nozzle_ipaddr ||
2201  !instance->nozzle_prefix) {
2202  knet_log_printf (LOGSYS_LEVEL_ERROR, "strdup failed in nozzle allocation");
2203  /*
2204  * This 'free' will cause a complete reconfigure of the device next time we reload
2205  * but will also let the the current device keep working until then.
2206  * remove_nozzle() only needs the, statically-allocated, nozzle_handle
2207  */
2208  free_nozzle(instance);
2209  }
2210  }
2211 
2212 out_free:
2213  free(name_str);
2214  free(ipaddr_str);
2215  free(prefix_str);
2216  if (macaddr_res == CS_OK) {
2217  free(macaddr_str);
2218  }
2219 
2220  return res;
2221 }
2222 #endif // HAVE_LIBNOZZLE
#define INTERFACE_MAX
Definition: coroapi.h:88
unsigned int nodeid
Definition: coroapi.h:0
unsigned char addr[TOTEMIP_ADDRLEN]
Definition: coroapi.h:2
#define PROCESSOR_COUNT_MAX
Definition: coroapi.h:96
#define CS_PRI_NODE_ID
Definition: corotypes.h:59
cs_error_t qb_to_cs_error(int result)
qb_to_cs_error
cs_error_t
The cs_error_t enum.
Definition: corotypes.h:98
@ CS_ERR_BUSY
Definition: corotypes.h:108
@ CS_ERR_TRY_AGAIN
Definition: corotypes.h:104
@ CS_OK
Definition: corotypes.h:99
@ CS_ERR_INVALID_PARAM
Definition: corotypes.h:105
@ CS_ERR_LIBRARY
Definition: corotypes.h:100
@ CS_ERR_NOT_EXIST
Definition: corotypes.h:110
uint32_t value
cs_error_t icmap_get_uint8(const char *key_name, uint8_t *u8)
Definition: icmap.c:868
#define ICMAP_TRACK_MODIFY
Definition: icmap.h:78
cs_error_t icmap_get_uint32(const char *key_name, uint32_t *u32)
Definition: icmap.c:892
#define ICMAP_TRACK_DELETE
Definition: icmap.h:77
cs_error_t icmap_track_add(const char *key_name, int32_t track_type, icmap_notify_fn_t notify_fn, void *user_data, icmap_track_t *icmap_track)
Add tracking function for given key_name.
Definition: icmap.c:1159
#define ICMAP_TRACK_PREFIX
Whole prefix is tracked, instead of key only (so "totem." tracking means that "totem....
Definition: icmap.h:85
#define ICMAP_TRACK_ADD
Definition: icmap.h:76
cs_error_t icmap_get_string(const char *key_name, char **str)
Shortcut for icmap_get for string type.
Definition: icmap.c:856
#define LOGSYS_LEVEL_ERROR
Definition: logsys.h:72
#define LEAVE
Definition: logsys.h:325
#define LOGSYS_LEVEL_INFO
Definition: logsys.h:75
#define LOGSYS_LEVEL_CRIT
Definition: logsys.h:71
#define LOGSYS_LEVEL_WARNING
Definition: logsys.h:73
int _logsys_subsys_create(const char *subsys, const char *filename)
_logsys_subsys_create
Definition: logsys.c:435
#define LOGSYS_LEVEL_DEBUG
Definition: logsys.h:76
#define ENTER
Definition: logsys.h:324
const char * corosync_get_config_file(void)
Definition: main.c:212
void * user_data
Definition: sam.c:127
Structure passed as new_value and old_value in change callback.
Definition: icmap.h:91
char crypto_model[CONFIG_STRING_LEN_MAX]
Definition: totem.h:223
unsigned int private_key_len
Definition: totem.h:176
unsigned int node_id
Definition: totem.h:167
uint32_t knet_compression_threshold
Definition: totem.h:235
struct totem_logging_configuration totem_logging_configuration
Definition: totem.h:207
struct totem_interface * interfaces
Definition: totem.h:165
int crypto_changed
Definition: totem.h:231
unsigned int merge_timeout
Definition: totem.h:197
int knet_compression_level
Definition: totem.h:237
unsigned int net_mtu
Definition: totem.h:209
char knet_compression_model[CONFIG_STRING_LEN_MAX]
Definition: totem.h:233
unsigned int block_unlisted_ips
Definition: totem.h:245
unsigned char private_key[TOTEM_PRIVATE_KEY_LEN_MAX]
Definition: totem.h:174
int crypto_index
Definition: totem.h:229
unsigned int knet_pmtud_interval
Definition: totem.h:169
char crypto_cipher_type[CONFIG_STRING_LEN_MAX]
Definition: totem.h:225
char link_mode[TOTEM_LINK_MODE_BYTES]
Definition: totem.h:205
char crypto_hash_type[CONFIG_STRING_LEN_MAX]
Definition: totem.h:227
int knet_ping_timeout
Definition: totem.h:93
int knet_link_priority
Definition: totem.h:91
struct totem_ip_address boundto
Definition: totem.h:84
uint16_t ip_port
Definition: totem.h:87
int knet_ping_interval
Definition: totem.h:92
uint8_t configured
Definition: totem.h:89
int knet_ping_precision
Definition: totem.h:94
int knet_pong_count
Definition: totem.h:95
int knet_transport
Definition: totem.h:96
struct totem_ip_address bindnet
Definition: totem.h:83
The totem_ip_address struct.
Definition: coroapi.h:111
unsigned int nodeid
Definition: coroapi.h:112
void(* log_printf)(int level, int subsys, const char *function_name, const char *file_name, int file_line, const char *format,...) __attribute__((format(printf
Definition: totem.h:101
unsigned int target_nodeid
Definition: totem.h:132
uint8_t onwire_max
Definition: totem.h:271
uint8_t reachable
Definition: totem.h:267
uint8_t remote
Definition: totem.h:268
unsigned int nodeid
Definition: totem.h:266
uint8_t onwire_min
Definition: totem.h:270
uint8_t onwire_ver
Definition: totem.h:272
uint8_t external
Definition: totem.h:269
struct knet_link_status link_status[KNET_MAX_LINK]
Definition: totem.h:273
void(* totemknet_target_set_completed)(void *context)
Definition: totemknet.c:119
pthread_mutex_t log_mutex
Definition: totemknet.c:176
void(* totemknet_mtu_changed)(void *context, int net_mtu)
Definition: totemknet.c:115
struct crypto_instance * crypto_inst
Definition: totemknet.c:94
struct totem_config * totem_config
Definition: totemknet.c:161
qb_loop_timer_handle timer_netif_check_timeout
Definition: totemknet.c:165
char * link_status[INTERFACE_MAX]
Definition: totemknet.c:151
void(* totemknet_log_printf)(int level, int subsys, const char *function, const char *file, int line, const char *format,...) __attribute__((format(printf
Definition: totemknet.c:138
knet_handle_t knet_handle
Definition: totemknet.c:98
uint16_t ip_port[INTERFACE_MAX]
Definition: totemknet.c:155
int totemknet_log_level_debug
Definition: totemknet.c:132
void(* totemknet_deliver_fn)(void *context, const void *msg, unsigned int msg_len, const struct sockaddr_storage *system_from)
Definition: totemknet.c:104
struct totem_ip_address token_target
Definition: totemknet.c:163
qb_loop_timer_handle timer_merge_detect_timeout
Definition: totemknet.c:167
void(*) void knet_context)
Definition: totemknet.c:145
int totemknet_log_level_warning
Definition: totemknet.c:128
struct totem_ip_address my_ids[INTERFACE_MAX]
Definition: totemknet.c:153
char iov_buffer[KNET_MAX_PACKET_SIZE]
Definition: totemknet.c:149
unsigned int merge_detect_messages_sent_before_timeout
Definition: totemknet.c:171
int send_merge_detect_message
Definition: totemknet.c:169
void(* totemknet_iface_change_fn)(void *context, const struct totem_ip_address *iface_address, unsigned int link_no)
Definition: totemknet.c:110
int totemknet_log_level_error
Definition: totemknet.c:126
int totemknet_log_level_security
Definition: totemknet.c:124
qb_loop_t * poll_handle
Definition: totemknet.c:96
int totemknet_log_level_notice
Definition: totemknet.c:130
const void * msg
Definition: totemknet.c:190
unsigned int msg_len
Definition: totemknet.c:191
struct totemknet_instance * instance
Definition: totemknet.c:192
typedef __attribute__
cfg_message_crypto_reconfig_phase_t
Definition: totem.h:154
@ CRYPTO_RECONFIG_PHASE_CLEANUP
Definition: totem.h:156
@ CRYPTO_RECONFIG_PHASE_ACTIVATE
Definition: totem.h:155
char type
Definition: totem.h:2
int totemip_parse(struct totem_ip_address *totemip, const char *addr, enum totem_ip_version_enum ip_version)
Definition: totemip.c:306
void totemip_copy(struct totem_ip_address *addr1, const struct totem_ip_address *addr2)
Definition: totemip.c:123
int totemip_totemip_to_sockaddr_convert(struct totem_ip_address *ip_addr, uint16_t port, struct sockaddr_storage *saddr, int *addrlen)
Definition: totemip.c:264
const char * totemip_print(const struct totem_ip_address *addr)
Definition: totemip.c:256
int totemknet_mcast_flush_send(void *knet_context, const void *msg, unsigned int msg_len)
Definition: totemknet.c:1351
int totemknet_iface_set(void *knet_context, const struct totem_ip_address *local_addr, unsigned short ip_port, unsigned int iface_no)
Definition: totemknet.c:1461
int totemknet_finalize(void *knet_context)
Definition: totemknet.c:664
int totemknet_recv_flush(void *knet_context)
Definition: totemknet.c:1329
int totemknet_member_list_rebind_ip(void *knet_context)
Definition: totemknet.c:1646
int totemknet_processor_count_set(void *knet_context, int processor_count)
Definition: totemknet.c:1322
int totemknet_mcast_noflush_send(void *knet_context, const void *msg, unsigned int msg_len)
Definition: totemknet.c:1364
struct totemknet_instance * global_instance
Definition: totemknet.c:187
void totemknet_buffer_release(void *ptr)
Definition: totemknet.c:1317
int totemknet_ifaces_get(void *knet_context, char ***status, unsigned int *iface_count)
Definition: totemknet.c:569
void * totemknet_buffer_alloc(void)
Definition: totemknet.c:1311
int totemknet_member_add(void *knet_context, const struct totem_ip_address *local, const struct totem_ip_address *member, int link_no)
Definition: totemknet.c:1478
int totemknet_crypto_set(void *knet_context, const char *cipher_type, const char *hash_type)
Definition: totemknet.c:363
int totemknet_member_remove(void *knet_context, const struct totem_ip_address *token_target, int link_no)
Definition: totemknet.c:1600
int totemknet_initialize(qb_loop_t *poll_handle, void **knet_context, struct totem_config *totem_config, totemsrp_stats_t *stats, void *context, void(*deliver_fn)(void *context, const void *msg, unsigned int msg_len, const struct sockaddr_storage *system_from), void(*iface_change_fn)(void *context, const struct totem_ip_address *iface_address, unsigned int link_no), void(*mtu_changed)(void *context, int net_mtu), void(*target_set_completed)(void *context))
Definition: totemknet.c:1059
int totemknet_token_send(void *knet_context, const void *msg, unsigned int msg_len)
Definition: totemknet.c:1339
#define CFG_INTERFACE_STATUS_MAX_LEN
Definition: totemknet.c:91
int totemknet_link_get_status(knet_node_id_t node, uint8_t link_no, struct knet_link_status *status)
Definition: totemknet.c:1771
#define OWN_INDEX_NONE
Definition: totemknet.c:488
int totemknet_nodestatus_get(void *knet_context, unsigned int nodeid, struct totem_node_status *node_status)
Definition: totemknet.c:491
int totemknet_handle_get_stats(struct knet_handle_stats *stats)
Definition: totemknet.c:1808
#define MSG_NOSIGNAL
Definition: totemknet.c:83
void totemknet_stats_clear(void *knet_context)
Definition: totemknet.c:1762
int totemknet_send_flush(void *knet_context)
Definition: totemknet.c:1334
void totemknet_net_mtu_adjust(void *knet_context, struct totem_config *totem_config)
Definition: totemknet.c:1388
#define knet_log_printf(level, format, args...)
Definition: totemknet.c:233
int totemknet_token_target_set(void *knet_context, unsigned int nodeid)
Definition: totemknet.c:1395
#define KNET_LOGSYS_PERROR(err_num, level, fmt, args...)
Definition: totemknet.c:249
int totemknet_reconfigure(void *knet_context, struct totem_config *totem_config)
Definition: totemknet.c:1673
int totemknet_crypto_reconfigure_phase(void *knet_context, struct totem_config *totem_config, cfg_message_crypto_reconfig_phase_t phase)
Definition: totemknet.c:1703
#define libknet_log_printf(level, format, args...)
Definition: totemknet.c:241
int totemknet_recv_mcast_empty(void *knet_context)
Definition: totemknet.c:1409
int totemknet_iface_check(void *knet_context)
Definition: totemknet.c:1378
struct totem_message_header header
Definition: totemsrp.c:0
struct srp_addr system_from
Definition: totemsrp.c:1
void stats_knet_add_handle(void)
Definition: stats.c:753
void stats_knet_del_member(knet_node_id_t nodeid, uint8_t link)
Definition: stats.c:740
void stats_knet_add_member(knet_node_id_t nodeid, uint8_t link)
Definition: stats.c:730