corosync  3.1.0
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  void *knet_context,
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 
491 int totemknet_ifaces_get (void *knet_context,
492  char ***status,
493  unsigned int *iface_count)
494 {
495  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
496  struct knet_link_status link_status;
497  knet_node_id_t host_list[KNET_MAX_HOST];
498  uint8_t link_list[KNET_MAX_LINK];
499  size_t num_hosts;
500  size_t num_links;
501  size_t link_idx;
502  int i,j;
503  char *ptr;
504  int res = 0;
505 
506  /*
507  * Don't do the whole 'link_info' bit if the caller just wants
508  * a count of interfaces.
509  */
510  if (status) {
511  int own_idx = OWN_INDEX_NONE;
512 
513  res = knet_host_get_host_list(instance->knet_handle,
514  host_list, &num_hosts);
515  if (res) {
516  return (-1);
517  }
518  qsort(host_list, num_hosts, sizeof(uint16_t), node_compare);
519 
520  for (j=0; j<num_hosts; j++) {
521  if (host_list[j] == instance->our_nodeid) {
522  own_idx = j;
523  break;
524  }
525  }
526 
527  for (i=0; i<INTERFACE_MAX; i++) {
528  memset(instance->link_status[i], 'd', CFG_INTERFACE_STATUS_MAX_LEN-1);
529  if (own_idx != OWN_INDEX_NONE) {
530  instance->link_status[i][own_idx] = 'n';
531  }
532  instance->link_status[i][num_hosts] = '\0';
533  }
534 
535  /* This is all a bit "inside-out" because "status" is a set of strings per link
536  * and knet orders things by host
537  */
538  for (j=0; j<num_hosts; j++) {
539  if (own_idx != OWN_INDEX_NONE && j == own_idx) {
540  continue ;
541  }
542 
543  res = knet_link_get_link_list(instance->knet_handle,
544  host_list[j], link_list, &num_links);
545  if (res) {
546  return (-1);
547  }
548 
549  link_idx = 0;
550  for (i=0; i < num_links; i++) {
551  /*
552  * Skip over links that are unconfigured to corosync. This is basically
553  * link0 if corosync isn't using it for comms, as we will still
554  * have it set up for loopback.
555  */
556  if (!instance->totem_config->interfaces[link_list[i]].configured) {
557  continue;
558  }
559  ptr = instance->link_status[link_idx++];
560 
561  res = knet_link_get_status(instance->knet_handle,
562  host_list[j],
563  link_list[i],
564  &link_status,
565  sizeof(link_status));
566  if (res == 0) {
567  ptr[j] = '0' + (link_status.enabled |
568  link_status.connected<<1 |
569  link_status.dynconnected<<2);
570  }
571  else {
573  "totemknet_ifaces_get: Cannot get link status: %s", strerror(errno));
574  ptr[j] = '?';
575  }
576  }
577  }
578  *status = instance->link_status;
579  }
580 
581  *iface_count = INTERFACE_MAX;
582 
583  return (res);
584 }
585 
587  void *knet_context)
588 {
589  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
590  int res = 0;
591  int i,j;
592  static knet_node_id_t nodes[KNET_MAX_HOST]; /* static to save stack */
593  uint8_t links[KNET_MAX_LINK];
594  size_t num_nodes;
595  size_t num_links;
596 
597  knet_log_printf(LOG_DEBUG, "totemknet: finalize");
598 
599  qb_loop_poll_del (instance->poll_handle, instance->logpipes[0]);
600  qb_loop_poll_del (instance->poll_handle, instance->knet_fd);
601 
602  /*
603  * Disable forwarding to make knet flush send queue. This ensures that the LEAVE message will be sent.
604  */
605  res = knet_handle_setfwd(instance->knet_handle, 0);
606  if (res) {
607  knet_log_printf (LOGSYS_LEVEL_CRIT, "totemknet: knet_handle_setfwd failed: %s", strerror(errno));
608  }
609 
610  res = knet_host_get_host_list(instance->knet_handle, nodes, &num_nodes);
611  if (res) {
612  knet_log_printf (LOGSYS_LEVEL_ERROR, "Cannot get knet node list for shutdown: %s", strerror(errno));
613  /* Crash out anyway */
614  goto finalise_error;
615  }
616 
617  /* Tidily shut down all nodes & links. */
618  for (i=0; i<num_nodes; i++) {
619 
620  res = knet_link_get_link_list(instance->knet_handle, nodes[i], links, &num_links);
621  if (res) {
622  knet_log_printf (LOGSYS_LEVEL_ERROR, "Cannot get knet link list for node " CS_PRI_NODE_ID ": %s", nodes[i], strerror(errno));
623  goto finalise_error;
624  }
625  for (j=0; j<num_links; j++) {
626  res = knet_link_set_enable(instance->knet_handle, nodes[i], links[j], 0);
627  if (res) {
628  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));
629  }
630  res = knet_link_clear_config(instance->knet_handle, nodes[i], links[j]);
631  if (res) {
632  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));
633  }
634  }
635  res = knet_host_remove(instance->knet_handle, nodes[i]);
636  if (res) {
637  knet_log_printf (LOGSYS_LEVEL_ERROR, "totemknet: knet_host_remove(node " CS_PRI_NODE_ID ") failed: %s", nodes[i], strerror(errno));
638  }
639  }
640 
641 finalise_error:
642  res = knet_handle_free(instance->knet_handle);
643  if (res) {
644  knet_log_printf (LOGSYS_LEVEL_CRIT, "totemknet: knet_handle_free failed: %s", strerror(errno));
645  }
646 
647  totemknet_stop_merge_detect_timeout(instance);
648 
649  log_flush_messages(instance);
650 
651  /*
652  * Error is deliberately ignored
653  */
654  (void)pthread_mutex_destroy(&instance->log_mutex);
655 
656  return (res);
657 }
658 
659 static int log_deliver_fn (
660  int fd,
661  int revents,
662  void *data)
663 {
664  struct totemknet_instance *instance = (struct totemknet_instance *)data;
665  char buffer[sizeof(struct knet_log_msg)*4];
666  char *bufptr = buffer;
667  int done = 0;
668  int len;
669 
670  len = read(fd, buffer, sizeof(buffer));
671  while (done < len) {
672  struct knet_log_msg *msg = (struct knet_log_msg *)bufptr;
673  switch (msg->msglevel) {
674  case KNET_LOG_ERR:
676  knet_log_get_subsystem_name(msg->subsystem),
677  msg->msg);
678  break;
679  case KNET_LOG_WARN:
681  knet_log_get_subsystem_name(msg->subsystem),
682  msg->msg);
683  break;
684  case KNET_LOG_INFO:
686  knet_log_get_subsystem_name(msg->subsystem),
687  msg->msg);
688  break;
689  case KNET_LOG_DEBUG:
691  knet_log_get_subsystem_name(msg->subsystem),
692  msg->msg);
693  break;
694  }
695  bufptr += sizeof(struct knet_log_msg);
696  done += sizeof(struct knet_log_msg);
697  }
698  return 0;
699 }
700 
701 static int data_deliver_fn (
702  int fd,
703  int revents,
704  void *data)
705 {
706  struct totemknet_instance *instance = (struct totemknet_instance *)data;
707  struct msghdr msg_hdr;
708  struct iovec iov_recv;
709  struct sockaddr_storage system_from;
710  ssize_t msg_len;
711  int truncated_packet;
712 
713  iov_recv.iov_base = instance->iov_buffer;
714  iov_recv.iov_len = KNET_MAX_PACKET_SIZE;
715 
716  msg_hdr.msg_name = &system_from;
717  msg_hdr.msg_namelen = sizeof (struct sockaddr_storage);
718  msg_hdr.msg_iov = &iov_recv;
719  msg_hdr.msg_iovlen = 1;
720 #ifdef HAVE_MSGHDR_CONTROL
721  msg_hdr.msg_control = 0;
722 #endif
723 #ifdef HAVE_MSGHDR_CONTROLLEN
724  msg_hdr.msg_controllen = 0;
725 #endif
726 #ifdef HAVE_MSGHDR_FLAGS
727  msg_hdr.msg_flags = 0;
728 #endif
729 #ifdef HAVE_MSGHDR_ACCRIGHTS
730  msg_hdr.msg_accrights = NULL;
731 #endif
732 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
733  msg_hdr.msg_accrightslen = 0;
734 #endif
735 
736  msg_len = recvmsg (fd, &msg_hdr, MSG_NOSIGNAL | MSG_DONTWAIT);
737  if (msg_len <= 0) {
738  return (0);
739  }
740 
741  truncated_packet = 0;
742 
743 #ifdef HAVE_MSGHDR_FLAGS
744  if (msg_hdr.msg_flags & MSG_TRUNC) {
745  truncated_packet = 1;
746  }
747 #else
748  /*
749  * We don't have MSGHDR_FLAGS, but we can (hopefully) safely make assumption that
750  * if bytes_received == KNET_MAX_PACKET_SIZE then packet is truncated
751  */
752  if (bytes_received == KNET_MAX_PACKET_SIZE) {
753  truncated_packet = 1;
754  }
755 #endif
756 
757  if (truncated_packet) {
759  "Received too big message. This may be because something bad is happening"
760  "on the network (attack?), or you tried join more nodes than corosync is"
761  "compiled with (%u) or bug in the code (bad estimation of "
762  "the KNET_MAX_PACKET_SIZE). Dropping packet.", PROCESSOR_COUNT_MAX);
763  return (0);
764  }
765 
766  /*
767  * Handle incoming message
768  */
769  instance->totemknet_deliver_fn (
770  instance->context,
771  instance->iov_buffer,
772  msg_len,
773  &system_from);
774 
775  return (0);
776 }
777 
778 static void timer_function_netif_check_timeout (
779  void *data)
780 {
781  struct totemknet_instance *instance = (struct totemknet_instance *)data;
782  int i;
783 
784  for (i=0; i < INTERFACE_MAX; i++) {
785  if (!instance->totem_config->interfaces[i].configured) {
786  continue;
787  }
788  instance->totemknet_iface_change_fn (instance->context,
789  &instance->my_ids[i],
790  i);
791  }
792 }
793 
794 static void knet_set_access_list_config(struct totemknet_instance *instance)
795 {
796 #ifdef HAVE_KNET_ACCESS_LIST
797  uint32_t value;
798  cs_error_t err;
799 
801  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet_enable access list: %d", value);
802 
803  err = knet_handle_enable_access_lists(instance->knet_handle, value);
804  if (err) {
805  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_access_lists failed");
806  }
807 #endif
808 }
809 
810 
811 /* NOTE: this relies on the fact that totem_reload_notify() is called first */
812 static void totemknet_refresh_config(
813  int32_t event,
814  const char *key_name,
815  struct icmap_notify_value new_val,
816  struct icmap_notify_value old_val,
817  void *user_data)
818 {
819  uint8_t reloading;
820  uint32_t value;
821  uint32_t link_no;
822  size_t num_nodes;
823  knet_node_id_t host_ids[KNET_MAX_HOST];
824  int i;
825  int err;
826  struct totemknet_instance *instance = (struct totemknet_instance *)user_data;
827 
828  ENTER();
829 
830  /*
831  * If a full reload is in progress then don't do anything until it's done and
832  * can reconfigure it all atomically
833  */
834  if (icmap_get_uint8("config.totemconfig_reload_in_progress", &reloading) == CS_OK && reloading) {
835  return;
836  }
837 
838  knet_set_access_list_config(instance);
839 
840  if (icmap_get_uint32("totem.knet_pmtud_interval", &value) == CS_OK) {
841 
843  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet_pmtud_interval now %d", value);
844  err = knet_handle_pmtud_setfreq(instance->knet_handle, instance->totem_config->knet_pmtud_interval);
845  if (err) {
846  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_pmtud_setfreq failed");
847  }
848  }
849 
850  /* Configure link parameters for each node */
851  err = knet_host_get_host_list(instance->knet_handle, host_ids, &num_nodes);
852  if (err != 0) {
853  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_get_host_list failed");
854  }
855 
856  for (i=0; i<num_nodes; i++) {
857  for (link_no = 0; link_no < INTERFACE_MAX; link_no++) {
858  if (host_ids[i] == instance->our_nodeid || !instance->totem_config->interfaces[link_no].configured) {
859  continue;
860  }
861 
862  err = knet_link_set_ping_timers(instance->knet_handle, host_ids[i], link_no,
863  instance->totem_config->interfaces[link_no].knet_ping_interval,
864  instance->totem_config->interfaces[link_no].knet_ping_timeout,
865  instance->totem_config->interfaces[link_no].knet_ping_precision);
866  if (err) {
867  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);
868  }
869  err = knet_link_set_pong_count(instance->knet_handle, host_ids[i], link_no,
870  instance->totem_config->interfaces[link_no].knet_pong_count);
871  if (err) {
872  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);
873  }
874  err = knet_link_set_priority(instance->knet_handle, host_ids[i], link_no,
875  instance->totem_config->interfaces[link_no].knet_link_priority);
876  if (err) {
877  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);
878  }
879 
880  }
881  }
882 
883  LEAVE();
884 }
885 
886 static void totemknet_add_config_notifications(struct totemknet_instance *instance)
887 {
888  icmap_track_t icmap_track_totem = NULL;
889  icmap_track_t icmap_track_reload = NULL;
890 
891  ENTER();
892 
893  icmap_track_add("totem.",
895  totemknet_refresh_config,
896  instance,
897  &icmap_track_totem);
898 
899  icmap_track_add("config.totemconfig_reload_in_progress",
901  totemknet_refresh_config,
902  instance,
903  &icmap_track_reload);
904 
905  LEAVE();
906 }
907 
908 static int totemknet_set_knet_crypto(struct totemknet_instance *instance)
909 {
910  struct knet_handle_crypto_cfg crypto_cfg;
911  int res;
912 
913  /* These have already been validated */
914  memcpy(crypto_cfg.crypto_model, instance->totem_config->crypto_model, sizeof(crypto_cfg.crypto_model));
915  memcpy(crypto_cfg.crypto_cipher_type, instance->totem_config->crypto_cipher_type, sizeof(crypto_cfg.crypto_model));
916  memcpy(crypto_cfg.crypto_hash_type, instance->totem_config->crypto_hash_type, sizeof(crypto_cfg.crypto_model));
917  memcpy(crypto_cfg.private_key, instance->totem_config->private_key, instance->totem_config->private_key_len);
918  crypto_cfg.private_key_len = instance->totem_config->private_key_len;
919 
920 #ifdef HAVE_KNET_CRYPTO_RECONF
921 
922  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Configuring crypto %s/%s/%s on index %d",
923  crypto_cfg.crypto_model,
924  crypto_cfg.crypto_cipher_type,
925  crypto_cfg.crypto_hash_type,
926  instance->totem_config->crypto_index
927  );
928 
929  /* If crypto is being disabled we need to explicitly allow cleartext traffic in knet */
930  if (strcmp(instance->totem_config->crypto_cipher_type, "none") == 0) {
931  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_ALLOW_CLEAR_TRAFFIC);
932  if (res) {
933  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_rx_clear_traffic(ALLOW) failed %s", strerror(errno));
934  }
935  }
936 
937  /* use_config will be called later when all nodes are synced */
938  res = knet_handle_crypto_set_config(instance->knet_handle, &crypto_cfg, instance->totem_config->crypto_index);
939  if (res == -1) {
940  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config (index %d) failed: %s", instance->totem_config->crypto_index, strerror(errno));
941  goto exit_error;
942  }
943  if (res == -2) {
944  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config (index %d) failed: -2", instance->totem_config->crypto_index);
945  goto exit_error;
946  }
947 #else
948  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Configuring crypto %s/%s/%s",
949  crypto_cfg.crypto_model,
950  crypto_cfg.crypto_cipher_type,
951  crypto_cfg.crypto_hash_type
952  );
953 
954  res = knet_handle_crypto(instance->knet_handle, &crypto_cfg);
955  if (res == -1) {
956  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto failed: %s", strerror(errno));
957  goto exit_error;
958  }
959  if (res == -2) {
960  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto failed: -2");
961  goto exit_error;
962  }
963 #endif
964 
965 
966 exit_error:
967  return res;
968 }
969 
970 /*
971  * Create an instance
972  */
974  qb_loop_t *poll_handle,
975  void **knet_context,
976  struct totem_config *totem_config,
977  totemsrp_stats_t *stats,
978  void *context,
979 
980  void (*deliver_fn) (
981  void *context,
982  const void *msg,
983  unsigned int msg_len,
984  const struct sockaddr_storage *system_from),
985 
986  void (*iface_change_fn) (
987  void *context,
988  const struct totem_ip_address *iface_address,
989  unsigned int link_no),
990 
991  void (*mtu_changed) (
992  void *context,
993  int net_mtu),
994 
995  void (*target_set_completed) (
996  void *context))
997 {
998  struct totemknet_instance *instance;
999  char *tmp_str;
1000  int8_t channel=0;
1001  int allow_knet_handle_fallback=0;
1002  int res;
1003  int i;
1004 
1005  instance = malloc (sizeof (struct totemknet_instance));
1006  if (instance == NULL) {
1007  return (-1);
1008  }
1009 
1010  totemknet_instance_initialize (instance);
1011 
1012  instance->totem_config = totem_config;
1013 
1014  /*
1015  * Configure logging
1016  */
1017  instance->totemknet_log_level_security = 1; //totem_config->totem_logging_configuration.log_level_security;
1024 
1025  instance->knet_subsys_id = _logsys_subsys_create("KNET", "libknet.h");
1026 
1027  /*
1028  * Initialize local variables for totemknet
1029  */
1030 
1031  instance->our_nodeid = instance->totem_config->node_id;
1032 
1033  for (i=0; i< INTERFACE_MAX; i++) {
1034  totemip_copy(&instance->my_ids[i], &totem_config->interfaces[i].bindnet);
1035  instance->my_ids[i].nodeid = instance->our_nodeid;
1036  instance->ip_port[i] = totem_config->interfaces[i].ip_port;
1037 
1038  /* Needed for totemsrp */
1040  }
1041 
1042  instance->poll_handle = poll_handle;
1043 
1044  instance->context = context;
1045  instance->totemknet_deliver_fn = deliver_fn;
1046 
1047  instance->totemknet_iface_change_fn = iface_change_fn;
1048 
1049  instance->totemknet_mtu_changed = mtu_changed;
1050 
1051  instance->totemknet_target_set_completed = target_set_completed;
1052 
1053  instance->loopback_link = 0;
1054 
1055  res = pipe(instance->logpipes);
1056  if (res == -1) {
1057  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "failed to create pipe for instance->logpipes");
1058  goto exit_error;
1059  }
1060  if (fcntl(instance->logpipes[0], F_SETFL, O_NONBLOCK) == -1 ||
1061  fcntl(instance->logpipes[1], F_SETFL, O_NONBLOCK) == -1) {
1062  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "failed to set O_NONBLOCK flag for instance->logpipes");
1063  goto exit_error;
1064  }
1065 
1066  if (icmap_get_string("system.allow_knet_handle_fallback", &tmp_str) == CS_OK) {
1067  if (strcmp(tmp_str, "yes") == 0) {
1068  allow_knet_handle_fallback = 1;
1069  }
1070  free(tmp_str);
1071  }
1072 
1073 #if defined(KNET_API_VER) && (KNET_API_VER == 2)
1074  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, KNET_HANDLE_FLAG_PRIVILEGED);
1075 #else
1076  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG);
1077 #endif
1078 
1079  if (allow_knet_handle_fallback && !instance->knet_handle && errno == ENAMETOOLONG) {
1080  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_new failed, trying unprivileged");
1081 #if defined(KNET_API_VER) && (KNET_API_VER == 2)
1082  instance->knet_handle = knet_handle_new(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, 0);
1083 #else
1084  instance->knet_handle = knet_handle_new_ex(instance->totem_config->node_id, instance->logpipes[1], KNET_LOG_DEBUG, 0);
1085 #endif
1086  }
1087 
1088  if (!instance->knet_handle) {
1089  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_CRIT, "knet_handle_new failed");
1090  goto exit_error;
1091  }
1092 
1093  knet_set_access_list_config(instance);
1094 
1095  res = knet_handle_pmtud_setfreq(instance->knet_handle, instance->totem_config->knet_pmtud_interval);
1096  if (res) {
1097  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_pmtud_setfreq failed");
1098  }
1099  res = knet_handle_enable_filter(instance->knet_handle, instance, dst_host_filter_callback_fn);
1100  if (res) {
1101  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_filter failed");
1102  }
1103  res = knet_handle_enable_sock_notify(instance->knet_handle, instance, socket_error_callback_fn);
1104  if (res) {
1105  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_sock_notify failed");
1106  }
1107  res = knet_host_enable_status_change_notify(instance->knet_handle, instance, host_change_callback_fn);
1108  if (res) {
1109  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_host_enable_status_change_notify failed");
1110  }
1111  res = knet_handle_enable_pmtud_notify(instance->knet_handle, instance, pmtu_change_callback_fn);
1112  if (res) {
1113  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_WARNING, "knet_handle_enable_pmtud_notify failed");
1114  }
1115  global_instance = instance;
1116 
1117  /* Get an fd into knet */
1118  instance->knet_fd = 0;
1119  res = knet_handle_add_datafd(instance->knet_handle, &instance->knet_fd, &channel);
1120  if (res) {
1121  knet_log_printf(LOG_DEBUG, "knet_handle_add_datafd failed: %s", strerror(errno));
1122  goto exit_error;
1123  }
1124 
1125  /* Enable crypto if requested */
1126 #ifdef HAVE_KNET_CRYPTO_RECONF
1127  if (strcmp(instance->totem_config->crypto_cipher_type, "none") != 0) {
1128  res = totemknet_set_knet_crypto(instance);
1129  if (res == 0) {
1130  res = knet_handle_crypto_use_config(instance->knet_handle, totem_config->crypto_index);
1131  if (res) {
1132  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_use_config failed: %s", strerror(errno));
1133  goto exit_error;
1134  }
1135  } else {
1136  knet_log_printf(LOG_DEBUG, "Failed to set up knet crypto");
1137  goto exit_error;
1138  }
1139  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_DISALLOW_CLEAR_TRAFFIC);
1140  if (res) {
1141  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_rx_clear_traffic (DISALLOW) failed: %s", strerror(errno));
1142  goto exit_error;
1143  }
1144 
1145  } else {
1146  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_ALLOW_CLEAR_TRAFFIC);
1147  if (res) {
1148  knet_log_printf(LOG_DEBUG, "knet_handle_crypto_rx_clear_traffic (ALLOW) failed: %s", strerror(errno));
1149  goto exit_error;
1150  }
1151  }
1152 #else
1153  if (strcmp(instance->totem_config->crypto_cipher_type, "none") != 0) {
1154  res = totemknet_set_knet_crypto(instance);
1155  if (res) {
1156  knet_log_printf(LOG_DEBUG, "Failed to set up knet crypto");
1157  goto exit_error;
1158  }
1159  }
1160 #endif
1161 
1162  /* Set up compression */
1163  if (strcmp(totem_config->knet_compression_model, "none") != 0) {
1164  /* Not fatal, but will log */
1165  (void)totemknet_configure_compression(knet_context, totem_config);
1166  }
1167 
1168  knet_handle_setfwd(instance->knet_handle, 1);
1169 
1170  instance->link_mode = KNET_LINK_POLICY_PASSIVE;
1171  if (strcmp(instance->totem_config->link_mode, "active")==0) {
1172  instance->link_mode = KNET_LINK_POLICY_ACTIVE;
1173  }
1174  if (strcmp(instance->totem_config->link_mode, "rr")==0) {
1175  instance->link_mode = KNET_LINK_POLICY_RR;
1176  }
1177 
1178  for (i=0; i<INTERFACE_MAX; i++) {
1179  instance->link_status[i] = malloc(CFG_INTERFACE_STATUS_MAX_LEN);
1180  if (!instance->link_status[i]) {
1181  goto exit_error;
1182  }
1183  }
1184 
1185  qb_loop_poll_add (instance->poll_handle,
1186  QB_LOOP_MED,
1187  instance->logpipes[0],
1188  POLLIN, instance, log_deliver_fn);
1189 
1190  qb_loop_poll_add (instance->poll_handle,
1191  QB_LOOP_HIGH,
1192  instance->knet_fd,
1193  POLLIN, instance, data_deliver_fn);
1194 
1195  /*
1196  * Upper layer isn't ready to receive message because it hasn't
1197  * initialized yet. Add short timer to check the interfaces.
1198  */
1199  qb_loop_timer_add (instance->poll_handle,
1200  QB_LOOP_MED,
1201  100*QB_TIME_NS_IN_MSEC,
1202  (void *)instance,
1203  timer_function_netif_check_timeout,
1204  &instance->timer_netif_check_timeout);
1205 
1206  totemknet_start_merge_detect_timeout(instance);
1207 
1208  /* Start listening for config changes */
1209  totemknet_add_config_notifications(instance);
1210 
1211  /* Add stats keys to icmap */
1213 
1214  knet_log_printf (LOGSYS_LEVEL_INFO, "totemknet initialized");
1215  *knet_context = instance;
1216 
1217  return (0);
1218 
1219 exit_error:
1220  log_flush_messages(instance);
1221  free(instance);
1222  return (-1);
1223 }
1224 
1226 {
1227  /* Need to have space for a message AND a struct mcast in case of encapsulated messages */
1228  return malloc(KNET_MAX_PACKET_SIZE + 512);
1229 }
1230 
1232 {
1233  return free (ptr);
1234 }
1235 
1237  void *knet_context,
1238  int processor_count)
1239 {
1240  return (0);
1241 }
1242 
1244 {
1245  return (0);
1246 }
1247 
1249 {
1250  return (0);
1251 }
1252 
1254  void *knet_context,
1255  const void *msg,
1256  unsigned int msg_len)
1257 {
1258  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1259  int res = 0;
1260 
1261  ucast_sendmsg (instance, &instance->token_target, msg, msg_len);
1262 
1263  return (res);
1264 }
1266  void *knet_context,
1267  const void *msg,
1268  unsigned int msg_len)
1269 {
1270  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1271  int res = 0;
1272 
1273  mcast_sendmsg (instance, msg, msg_len, 0);
1274 
1275  return (res);
1276 }
1277 
1279  void *knet_context,
1280  const void *msg,
1281  unsigned int msg_len)
1282 {
1283  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1284  int res = 0;
1285 
1286  mcast_sendmsg (instance, msg, msg_len, 1);
1287 
1288  return (res);
1289 }
1290 
1291 
1293 {
1294  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1295  int res = 0;
1296 
1297  knet_log_printf(LOG_DEBUG, "totemknet: iface_check");
1298 
1299  return (res);
1300 }
1301 
1303 {
1304  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1305 
1306  knet_log_printf(LOG_DEBUG, "totemknet: Returning MTU of %d", totem_config->net_mtu);
1307 }
1308 
1310  void *knet_context,
1311  unsigned int nodeid)
1312 {
1313  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1314  int res = 0;
1315 
1316  instance->token_target.nodeid = nodeid;
1317 
1318  instance->totemknet_target_set_completed (instance->context);
1319 
1320  return (res);
1321 }
1322 
1324  void *knet_context)
1325 {
1326  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1327  unsigned int res;
1328  struct sockaddr_storage system_from;
1329  struct msghdr msg_hdr;
1330  struct iovec iov_recv;
1331  struct pollfd ufd;
1332  int nfds;
1333  int msg_processed = 0;
1334 
1335  iov_recv.iov_base = instance->iov_buffer;
1336  iov_recv.iov_len = KNET_MAX_PACKET_SIZE;
1337 
1338  msg_hdr.msg_name = &system_from;
1339  msg_hdr.msg_namelen = sizeof (struct sockaddr_storage);
1340  msg_hdr.msg_iov = &iov_recv;
1341  msg_hdr.msg_iovlen = 1;
1342 #ifdef HAVE_MSGHDR_CONTROL
1343  msg_hdr.msg_control = 0;
1344 #endif
1345 #ifdef HAVE_MSGHDR_CONTROLLEN
1346  msg_hdr.msg_controllen = 0;
1347 #endif
1348 #ifdef HAVE_MSGHDR_FLAGS
1349  msg_hdr.msg_flags = 0;
1350 #endif
1351 #ifdef HAVE_MSGHDR_ACCRIGHTS
1352  msg_msg_hdr.msg_accrights = NULL;
1353 #endif
1354 #ifdef HAVE_MSGHDR_ACCRIGHTSLEN
1355  msg_msg_hdr.msg_accrightslen = 0;
1356 #endif
1357 
1358  do {
1359  ufd.fd = instance->knet_fd;
1360  ufd.events = POLLIN;
1361  nfds = poll (&ufd, 1, 0);
1362  if (nfds == 1 && ufd.revents & POLLIN) {
1363  res = recvmsg (instance->knet_fd, &msg_hdr, MSG_NOSIGNAL | MSG_DONTWAIT);
1364  if (res != -1) {
1365  msg_processed = 1;
1366  } else {
1367  msg_processed = -1;
1368  }
1369  }
1370  } while (nfds == 1);
1371 
1372  return (msg_processed);
1373 }
1374 
1375 int totemknet_iface_set (void *knet_context,
1376  const struct totem_ip_address *local_addr,
1377  unsigned short ip_port,
1378  unsigned int iface_no)
1379 {
1380  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1381 
1382  totemip_copy(&instance->my_ids[iface_no], local_addr);
1383 
1384  knet_log_printf(LOG_INFO, "Configured link number %d: local addr: %s, port=%d", iface_no, totemip_print(local_addr), ip_port);
1385 
1386  instance->ip_port[iface_no] = ip_port;
1387 
1388  return 0;
1389 }
1390 
1391 
1393  void *knet_context,
1394  const struct totem_ip_address *local,
1395  const struct totem_ip_address *member,
1396  int link_no)
1397 {
1398  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1399  int err;
1400  int port = instance->ip_port[link_no];
1401  struct sockaddr_storage remote_ss;
1402  struct sockaddr_storage local_ss;
1403  int addrlen;
1404  int i;
1405  int host_found = 0;
1406  knet_node_id_t host_ids[KNET_MAX_HOST];
1407  size_t num_host_ids;
1408 
1409  /* Only create 1 loopback link and use link 0 */
1410  if (member->nodeid == instance->our_nodeid) {
1411  if (!instance->loopback_link) {
1412  link_no = 0;
1413  instance->loopback_link = 1;
1414  } else {
1415  /* Already done */
1416  return 0;
1417  }
1418  }
1419 
1420  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_add: " CS_PRI_NODE_ID " (%s), link=%d", member->nodeid, totemip_print(member), link_no);
1421  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: local: " CS_PRI_NODE_ID " (%s)", local->nodeid, totemip_print(local));
1422 
1423 
1424  /* Only add the host if it doesn't already exist in knet */
1425  err = knet_host_get_host_list(instance->knet_handle, host_ids, &num_host_ids);
1426  if (err) {
1427  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_get_host_list");
1428  return -1;
1429  }
1430  for (i=0; i<num_host_ids; i++) {
1431  if (host_ids[i] == member->nodeid) {
1432  host_found = 1;
1433  }
1434  }
1435 
1436  if (!host_found) {
1437  err = knet_host_add(instance->knet_handle, member->nodeid);
1438  if (err != 0 && errno != EEXIST) {
1439  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_host_add");
1440  return -1;
1441  }
1442  } else {
1443  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nodeid " CS_PRI_NODE_ID " already added", member->nodeid);
1444  }
1445 
1446 
1447  if (err == 0) {
1448  if (knet_host_set_policy(instance->knet_handle, member->nodeid, instance->link_mode)) {
1449  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_set_policy failed");
1450  return -1;
1451  }
1452  }
1453 
1454  memset(&local_ss, 0, sizeof(local_ss));
1455  memset(&remote_ss, 0, sizeof(remote_ss));
1456  /* Casts to remove const */
1457  totemip_totemip_to_sockaddr_convert((struct totem_ip_address *)member, port, &remote_ss, &addrlen);
1458  totemip_totemip_to_sockaddr_convert((struct totem_ip_address *)local, port, &local_ss, &addrlen);
1459 
1460  if (member->nodeid == instance->our_nodeid) {
1461  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: loopback link is %d\n", link_no);
1462 
1463  err = knet_link_set_config(instance->knet_handle, member->nodeid, link_no,
1464  KNET_TRANSPORT_LOOPBACK,
1465  &local_ss, &remote_ss, KNET_LINK_FLAG_TRAFFICHIPRIO);
1466  }
1467  else {
1468  err = knet_link_set_config(instance->knet_handle, member->nodeid, link_no,
1469  instance->totem_config->interfaces[link_no].knet_transport,
1470  &local_ss, &remote_ss, KNET_LINK_FLAG_TRAFFICHIPRIO);
1471  }
1472  if (err) {
1473  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_config failed");
1474  return -1;
1475  }
1476 
1477  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_add: Setting link prio to %d",
1478  instance->totem_config->interfaces[link_no].knet_link_priority);
1479 
1480  err = knet_link_set_priority(instance->knet_handle, member->nodeid, link_no,
1481  instance->totem_config->interfaces[link_no].knet_link_priority);
1482  if (err) {
1483  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_priority for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1484  }
1485 
1486  /* ping timeouts maybe 0 here for a newly added interface so we leave this till later, it will
1487  get done in totemknet_refresh_config */
1488  if (instance->totem_config->interfaces[link_no].knet_ping_interval != 0) {
1489  err = knet_link_set_ping_timers(instance->knet_handle, member->nodeid, link_no,
1490  instance->totem_config->interfaces[link_no].knet_ping_interval,
1491  instance->totem_config->interfaces[link_no].knet_ping_timeout,
1492  instance->totem_config->interfaces[link_no].knet_ping_precision);
1493  if (err) {
1494  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);
1495  }
1496  err = knet_link_set_pong_count(instance->knet_handle, member->nodeid, link_no,
1497  instance->totem_config->interfaces[link_no].knet_pong_count);
1498  if (err) {
1499  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);
1500  }
1501  }
1502 
1503  err = knet_link_set_enable(instance->knet_handle, member->nodeid, link_no, 1);
1504  if (err) {
1505  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_link_set_enable for nodeid " CS_PRI_NODE_ID ", link %d failed", member->nodeid, link_no);
1506  return -1;
1507  }
1508 
1509  /* register stats */
1510  stats_knet_add_member(member->nodeid, link_no);
1511  return (0);
1512 }
1513 
1515  void *knet_context,
1516  const struct totem_ip_address *token_target,
1517  int link_no)
1518 {
1519  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1520  int res;
1521  uint8_t link_list[KNET_MAX_LINK];
1522  size_t num_links;
1523 
1524  knet_log_printf (LOGSYS_LEVEL_DEBUG, "knet: member_remove: " CS_PRI_NODE_ID ", link=%d", token_target->nodeid, link_no);
1525 
1526  /* Don't remove the link with the loopback on it until we shut down */
1527  if (token_target->nodeid == instance->our_nodeid) {
1528  return 0;
1529  }
1530 
1531  /* Tidy stats */
1533 
1534  /* Remove the link first */
1535  res = knet_link_set_enable(instance->knet_handle, token_target->nodeid, link_no, 0);
1536  if (res != 0) {
1537  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);
1538  return res;
1539  }
1540 
1541  res = knet_link_clear_config(instance->knet_handle, token_target->nodeid, link_no);
1542  if (res != 0) {
1543  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);
1544  return res;
1545  }
1546 
1547  /* If this is the last link, then remove the node */
1548  res = knet_link_get_link_list(instance->knet_handle,
1549  token_target->nodeid, link_list, &num_links);
1550  if (res) {
1551  return (0); /* not really failure */
1552  }
1553 
1554  if (num_links == 0) {
1555  res = knet_host_remove(instance->knet_handle, token_target->nodeid);
1556  }
1557  return res;
1558 }
1559 
1561  void *knet_context)
1562 {
1563  return (0);
1564 }
1565 
1566 
1567 static int totemknet_configure_compression (
1568  void *knet_context,
1569  struct totem_config *totem_config)
1570 {
1571  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1572  struct knet_handle_compress_cfg compress_cfg;
1573  int res = 0;
1574 
1575  assert(strlen(totem_config->knet_compression_model) < sizeof(compress_cfg.compress_model));
1576  strcpy(compress_cfg.compress_model, totem_config->knet_compression_model);
1577 
1578  compress_cfg.compress_threshold = totem_config->knet_compression_threshold;
1579  compress_cfg.compress_level = totem_config->knet_compression_level;
1580 
1581  res = knet_handle_compress(instance->knet_handle, &compress_cfg);
1582  if (res) {
1583  KNET_LOGSYS_PERROR(errno, LOGSYS_LEVEL_ERROR, "knet_handle_compress failed");
1584  }
1585  return res;
1586 }
1587 
1589  void *knet_context,
1590  struct totem_config *totem_config)
1591 {
1592  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1593  int res = 0;
1594 
1595  (void)totemknet_configure_compression(knet_context, totem_config);
1596 
1597 #ifdef HAVE_LIBNOZZLE
1598  /* Set up nozzle device(s). Return code is ignored, because inability
1599  * configure nozzle is not fatal problem, errors are logged and
1600  * there is not much else we can do */
1601  (void)setup_nozzle(instance);
1602 #endif
1603 
1605  /* Flip crypto_index */
1607  res = totemknet_set_knet_crypto(instance);
1608 
1609  knet_log_printf(LOG_INFO, "kronosnet crypto reconfigured on index %d: %s/%s/%s", totem_config->crypto_index,
1613  }
1614  return (res);
1615 }
1616 
1617 
1619  void *knet_context,
1620  struct totem_config *totem_config,
1622 {
1623 #ifdef HAVE_KNET_CRYPTO_RECONF
1624  int res;
1625  int config_to_use;
1626  int config_to_clear;
1627  struct knet_handle_crypto_cfg crypto_cfg;
1628  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1629 
1630  knet_log_printf(LOGSYS_LEVEL_DEBUG, "totemknet_crypto_reconfigure_phase %d, index=%d\n", phase, totem_config->crypto_index);
1631 
1632  switch (phase) {
1634  config_to_use = totem_config->crypto_index;
1635  if (strcmp(instance->totem_config->crypto_cipher_type, "none") == 0) {
1636  config_to_use = 0; /* we are clearing it */
1637  }
1638 
1639  /* Enable the new config on this node */
1640  res = knet_handle_crypto_use_config(instance->knet_handle, config_to_use);
1641  if (res == -1) {
1642  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_use_config %d failed: %s", config_to_use, strerror(errno));
1643  }
1644  break;
1645 
1647  /*
1648  * All nodes should now have the new config. clear the old one out
1649  * OR disable crypto entirely if that's what the new config insists on.
1650  */
1651  config_to_clear = 3-totem_config->crypto_index;
1652  knet_log_printf(LOGSYS_LEVEL_DEBUG, "Clearing old knet crypto config %d\n", config_to_clear);
1653 
1654  strcpy(crypto_cfg.crypto_model, "none");
1655  strcpy(crypto_cfg.crypto_cipher_type, "none");
1656  strcpy(crypto_cfg.crypto_hash_type, "none");
1657  res = knet_handle_crypto_set_config(instance->knet_handle, &crypto_cfg, config_to_clear);
1658  if (res == -1) {
1659  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config to clear index %d failed: %s", config_to_clear, strerror(errno));
1660  }
1661  if (res == -2) {
1662  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_set_config to clear index %d failed: -2", config_to_clear);
1663  }
1664 
1665  /* If crypto is enabled then disable all cleartext reception */
1666  if (strcmp(instance->totem_config->crypto_cipher_type, "none") != 0) {
1667  res = knet_handle_crypto_rx_clear_traffic(instance->knet_handle, KNET_CRYPTO_RX_DISALLOW_CLEAR_TRAFFIC);
1668  if (res) {
1669  knet_log_printf(LOGSYS_LEVEL_ERROR, "knet_handle_crypto_rx_clear_traffic(DISALLOW) failed %s", strerror(errno));
1670  }
1671  }
1672  }
1673 #endif
1674  return 0;
1675 }
1676 
1678  void *knet_context)
1679 {
1680  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1681 
1682  (void) knet_handle_clear_stats(instance->knet_handle, KNET_CLEARSTATS_HANDLE_AND_LINK);
1683 }
1684 
1685 /* For the stats module */
1687  knet_node_id_t node, uint8_t link_no,
1688  struct knet_link_status *status)
1689 {
1690  int res;
1691  int ret = CS_OK;
1692 
1693  /* We are probably not using knet */
1694  if (!global_instance) {
1695  return CS_ERR_NOT_EXIST;
1696  }
1697 
1698  if (link_no >= INTERFACE_MAX) {
1699  return CS_ERR_NOT_EXIST; /* Invalid link number */
1700  }
1701 
1702  res = knet_link_get_status(global_instance->knet_handle, node, link_no, status, sizeof(struct knet_link_status));
1703  if (res) {
1704  switch (errno) {
1705  case EINVAL:
1706  ret = CS_ERR_INVALID_PARAM;
1707  break;
1708  case EBUSY:
1709  ret = CS_ERR_BUSY;
1710  break;
1711  case EDEADLK:
1712  ret = CS_ERR_TRY_AGAIN;
1713  break;
1714  default:
1715  ret = CS_ERR_LIBRARY;
1716  break;
1717  }
1718  }
1719 
1720  return (ret);
1721 }
1722 
1724  struct knet_handle_stats *stats)
1725 {
1726  int res;
1727 
1728  /* We are probably not using knet */
1729  if (!global_instance) {
1730  return CS_ERR_NOT_EXIST;
1731  }
1732 
1733  res = knet_handle_get_stats(global_instance->knet_handle, stats, sizeof(struct knet_handle_stats));
1734  if (res != 0) {
1735  return (qb_to_cs_error(-errno));
1736  }
1737 
1738  return CS_OK;
1739 }
1740 
1741 static void timer_function_merge_detect_timeout (
1742  void *data)
1743 {
1744  struct totemknet_instance *instance = (struct totemknet_instance *)data;
1745 
1746  if (instance->merge_detect_messages_sent_before_timeout == 0) {
1747  instance->send_merge_detect_message = 1;
1748  }
1749 
1751 
1752  totemknet_start_merge_detect_timeout(instance);
1753 }
1754 
1755 static void totemknet_start_merge_detect_timeout(
1756  void *knet_context)
1757 {
1758  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1759 
1760  qb_loop_timer_add(instance->poll_handle,
1761  QB_LOOP_MED,
1762  instance->totem_config->merge_timeout * 2 * QB_TIME_NS_IN_MSEC,
1763  (void *)instance,
1764  timer_function_merge_detect_timeout,
1765  &instance->timer_merge_detect_timeout);
1766 
1767 }
1768 
1769 static void totemknet_stop_merge_detect_timeout(
1770  void *knet_context)
1771 {
1772  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1773 
1774  qb_loop_timer_del(instance->poll_handle,
1775  instance->timer_merge_detect_timeout);
1776 }
1777 
1778 static void log_flush_messages (void *knet_context)
1779 {
1780  struct pollfd pfd;
1781  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1782  int cont;
1783 
1784  cont = 1;
1785 
1786  while (cont) {
1787  pfd.fd = instance->logpipes[0];
1788  pfd.events = POLLIN;
1789  pfd.revents = 0;
1790 
1791  if ((poll(&pfd, 1, 0) > 0) &&
1792  (pfd.revents & POLLIN) &&
1793  (log_deliver_fn(instance->logpipes[0], POLLIN, instance) == 0)) {
1794  cont = 1;
1795  } else {
1796  cont = 0;
1797  }
1798  }
1799 }
1800 
1801 
1802 #ifdef HAVE_LIBNOZZLE
1803 #define NOZZLE_NAME "nozzle.name"
1804 #define NOZZLE_IPADDR "nozzle.ipaddr"
1805 #define NOZZLE_PREFIX "nozzle.ipprefix"
1806 #define NOZZLE_MACADDR "nozzle.macaddr"
1807 
1808 #define NOZZLE_CHANNEL 1
1809 
1810 
1811 static char *get_nozzle_script_dir(void *knet_context)
1812 {
1813  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1814  char filename[PATH_MAX + FILENAME_MAX + 1];
1815  static char updown_dirname[PATH_MAX + FILENAME_MAX + 1];
1816  int res;
1817  const char *dirname_res;
1818 
1819  /*
1820  * Build script directory based on corosync.conf file location
1821  */
1822  res = snprintf(filename, sizeof(filename), "%s",
1824  if (res >= sizeof(filename)) {
1825  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nozzle up/down path too long");
1826  return NULL;
1827  }
1828 
1829  dirname_res = dirname(filename);
1830 
1831  res = snprintf(updown_dirname, sizeof(updown_dirname), "%s/%s",
1832  dirname_res, "updown.d");
1833  if (res >= sizeof(updown_dirname)) {
1834  knet_log_printf (LOGSYS_LEVEL_DEBUG, "nozzle up/down path too long");
1835  return NULL;
1836  }
1837  return updown_dirname;
1838 }
1839 
1840 /*
1841  * Deliberately doesn't return the status as caller doesn't care.
1842  * The result will be logged though
1843  */
1844 static void run_nozzle_script(struct totemknet_instance *instance, int type, const char *typename)
1845 {
1846  int res;
1847  char *exec_string;
1848 
1849  res = nozzle_run_updown(instance->nozzle_handle, type, &exec_string);
1850  if (res == -1 && errno != ENOENT) {
1851  knet_log_printf (LOGSYS_LEVEL_INFO, "exec nozzle %s script failed: %s", typename, strerror(errno));
1852  } else if (res == -2) {
1853  knet_log_printf (LOGSYS_LEVEL_INFO, "nozzle %s script failed", typename);
1854  knet_log_printf (LOGSYS_LEVEL_INFO, "%s", exec_string);
1855  }
1856 }
1857 
1858 /*
1859  * Reparse IP address to add in our node ID
1860  * IPv6 addresses must end in '::'
1861  * IPv4 addresses must just be valid
1862  * '/xx' lengths are optional for IPv6, mandatory for IPv4
1863  *
1864  * Returns the modified IP address as a string to pass into libnozzle
1865  */
1866 static int reparse_nozzle_ip_address(struct totemknet_instance *instance,
1867  const char *input_addr,
1868  const char *prefix, int nodeid,
1869  char *output_addr, size_t output_len)
1870 {
1871  char *coloncolon;
1872  int bits;
1873  int max_prefix = 64;
1874  uint32_t nodeid_mask;
1875  uint32_t addr_mask;
1876  uint32_t masked_nodeid;
1877  struct in_addr *addr;
1878  struct totem_ip_address totemip;
1879 
1880  coloncolon = strstr(input_addr, "::");
1881  if (!coloncolon) {
1882  max_prefix = 30;
1883  }
1884 
1885  bits = atoi(prefix);
1886  if (bits < 8 || bits > max_prefix) {
1887  knet_log_printf(LOGSYS_LEVEL_ERROR, "nozzle IP address prefix must be >= 8 and <= %d (got %d)", max_prefix, bits);
1888  return -1;
1889  }
1890 
1891  /* IPv6 is easy */
1892  if (coloncolon) {
1893  memcpy(output_addr, input_addr, coloncolon-input_addr);
1894  sprintf(output_addr + (coloncolon-input_addr), "::%x", nodeid);
1895  return 0;
1896  }
1897 
1898  /* For IPv4 we need to parse the address into binary, mask off the required bits,
1899  * add in the masked_nodeid and 'print' it out again
1900  */
1901  nodeid_mask = UINT32_MAX & ((1<<(32 - bits)) - 1);
1902  addr_mask = UINT32_MAX ^ nodeid_mask;
1903  masked_nodeid = nodeid & nodeid_mask;
1904 
1905  if (totemip_parse(&totemip, input_addr, AF_INET)) {
1906  knet_log_printf(LOGSYS_LEVEL_ERROR, "Failed to parse IPv4 nozzle IP address");
1907  return -1;
1908  }
1909  addr = (struct in_addr *)&totemip.addr;
1910  addr->s_addr &= htonl(addr_mask);
1911  addr->s_addr |= htonl(masked_nodeid);
1912 
1913  inet_ntop(AF_INET, addr, output_addr, output_len);
1914  return 0;
1915 }
1916 
1917 static int create_nozzle_device(void *knet_context, const char *name,
1918  const char *ipaddr, const char *prefix,
1919  const char *macaddr)
1920 {
1921  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1922  char device_name[IFNAMSIZ+1];
1923  size_t size = IFNAMSIZ;
1924  int8_t channel = NOZZLE_CHANNEL;
1925  nozzle_t nozzle_dev;
1926  int nozzle_fd;
1927  int res;
1928  char *updown_dir;
1929  char parsed_ipaddr[INET6_ADDRSTRLEN];
1930  char mac[19];
1931 
1932  memset(device_name, 0, size);
1933  memset(&mac, 0, sizeof(mac));
1934  strncpy(device_name, name, size);
1935 
1936  updown_dir = get_nozzle_script_dir(knet_context);
1937  knet_log_printf (LOGSYS_LEVEL_INFO, "nozzle script dir is %s", updown_dir);
1938 
1939  nozzle_dev = nozzle_open(device_name, size, updown_dir);
1940  if (!nozzle_dev) {
1941  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to init nozzle device %s: %s", device_name, strerror(errno));
1942  return -1;
1943  }
1944  instance->nozzle_handle = nozzle_dev;
1945 
1946  if (nozzle_set_mac(nozzle_dev, macaddr) < 0) {
1947  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add set nozzle MAC to %s: %s", mac, strerror(errno));
1948  goto out_clean;
1949  }
1950 
1951  if (reparse_nozzle_ip_address(instance, ipaddr, prefix, instance->our_nodeid, parsed_ipaddr, sizeof(parsed_ipaddr))) {
1952  /* Prints its own errors */
1953  goto out_clean;
1954  }
1955  knet_log_printf (LOGSYS_LEVEL_INFO, "Local nozzle IP address is %s / %d", parsed_ipaddr, atoi(prefix));
1956  if (nozzle_add_ip(nozzle_dev, parsed_ipaddr, prefix) < 0) {
1957  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add set nozzle IP addr to %s/%s: %s", parsed_ipaddr, prefix, strerror(errno));
1958  goto out_clean;
1959  }
1960 
1961  nozzle_fd = nozzle_get_fd(nozzle_dev);
1962  knet_log_printf (LOGSYS_LEVEL_INFO, "Opened '%s' on fd %d", device_name, nozzle_fd);
1963 
1964  res = knet_handle_add_datafd(instance->knet_handle, &nozzle_fd, &channel);
1965  if (res != 0) {
1966  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to add nozzle FD to knet: %s", strerror(errno));
1967  goto out_clean;
1968  }
1969 
1970  run_nozzle_script(instance, NOZZLE_PREUP, "pre-up");
1971 
1972  res = nozzle_set_up(nozzle_dev);
1973  if (res != 0) {
1974  knet_log_printf (LOGSYS_LEVEL_ERROR, "Unable to set nozzle interface UP: %s", strerror(errno));
1975  goto out_clean;
1976  }
1977  run_nozzle_script(instance, NOZZLE_UP, "up");
1978 
1979  return 0;
1980 
1981 out_clean:
1982  nozzle_close(nozzle_dev);
1983  return -1;
1984 }
1985 
1986 static int remove_nozzle_device(void *knet_context)
1987 {
1988  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
1989  int res;
1990  int datafd;
1991 
1992  res = knet_handle_get_datafd(instance->knet_handle, NOZZLE_CHANNEL, &datafd);
1993  if (res != 0) {
1994  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't find datafd for channel %d: %s", NOZZLE_CHANNEL, strerror(errno));
1995  return -1;
1996  }
1997 
1998  res = knet_handle_remove_datafd(instance->knet_handle, datafd);
1999  if (res != 0) {
2000  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't remove datafd for nozzle channel %d: %s", NOZZLE_CHANNEL, strerror(errno));
2001  return -1;
2002  }
2003 
2004  run_nozzle_script(instance, NOZZLE_DOWN, "pre-down");
2005  res = nozzle_set_down(instance->nozzle_handle);
2006  if (res != 0) {
2007  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't set nozzle device down: %s", strerror(errno));
2008  return -1;
2009  }
2010  run_nozzle_script(instance, NOZZLE_POSTDOWN, "post-down");
2011 
2012  res = nozzle_close(instance->nozzle_handle);
2013  if (res != 0) {
2014  knet_log_printf (LOGSYS_LEVEL_ERROR, "Can't close nozzle device: %s", strerror(errno));
2015  return -1;
2016  }
2017  knet_log_printf (LOGSYS_LEVEL_INFO, "Removed nozzle device");
2018  return 0;
2019 }
2020 
2021 static void free_nozzle(struct totemknet_instance *instance)
2022 {
2023  free(instance->nozzle_name);
2024  free(instance->nozzle_ipaddr);
2025  free(instance->nozzle_prefix);
2026  free(instance->nozzle_macaddr);
2027 
2028  instance->nozzle_name = instance->nozzle_ipaddr = instance->nozzle_prefix =
2029  instance->nozzle_macaddr = NULL;
2030 }
2031 
2032 static int setup_nozzle(void *knet_context)
2033 {
2034  struct totemknet_instance *instance = (struct totemknet_instance *)knet_context;
2035  char *ipaddr_str = NULL;
2036  char *name_str = NULL;
2037  char *prefix_str = NULL;
2038  char *macaddr_str = NULL;
2039  char mac[32];
2040  int name_res;
2041  int macaddr_res;
2042  int res = -1;
2043 
2044  /*
2045  * Return value ignored on purpose. icmap_get_string changes
2046  * ipaddr_str/prefix_str only on success.
2047  */
2048  (void)icmap_get_string(NOZZLE_IPADDR, &ipaddr_str);
2049  (void)icmap_get_string(NOZZLE_PREFIX, &prefix_str);
2050  macaddr_res = icmap_get_string(NOZZLE_MACADDR, &macaddr_str);
2051  name_res = icmap_get_string(NOZZLE_NAME, &name_str);
2052 
2053  /* Is is being removed? */
2054  if (name_res == CS_ERR_NOT_EXIST && instance->nozzle_handle) {
2055  remove_nozzle_device(instance);
2056  free_nozzle(instance);
2057  goto out_free;
2058  }
2059 
2060  if (!name_str) {
2061  /* no nozzle */
2062  goto out_free;
2063  }
2064 
2065  if (!ipaddr_str) {
2066  knet_log_printf (LOGSYS_LEVEL_ERROR, "No IP address supplied for Nozzle device");
2067  goto out_free;
2068  }
2069 
2070  if (!prefix_str) {
2071  knet_log_printf (LOGSYS_LEVEL_ERROR, "No prefix supplied for Nozzle IP address");
2072  goto out_free;
2073  }
2074 
2075  if (macaddr_str && strlen(macaddr_str) != 17) {
2076  knet_log_printf (LOGSYS_LEVEL_ERROR, "macaddr for nozzle device is not in the correct format '%s'", macaddr_str);
2077  goto out_free;
2078  }
2079  if (!macaddr_str) {
2080  macaddr_str = (char*)"54:54:01:00:00:00";
2081  }
2082 
2083  if (instance->nozzle_name &&
2084  (strcmp(name_str, instance->nozzle_name) == 0) &&
2085  (strcmp(ipaddr_str, instance->nozzle_ipaddr) == 0) &&
2086  (strcmp(prefix_str, instance->nozzle_prefix) == 0) &&
2087  (instance->nozzle_macaddr == NULL ||
2088  strcmp(macaddr_str, instance->nozzle_macaddr) == 0)) {
2089  /* Nothing has changed */
2090  knet_log_printf (LOGSYS_LEVEL_DEBUG, "Nozzle device info not changed");
2091  goto out_free;
2092  }
2093 
2094  /* Add nodeid into MAC address */
2095  memcpy(mac, macaddr_str, 12);
2096  snprintf(mac+12, sizeof(mac) - 13, "%02x:%02x",
2097  instance->our_nodeid >> 8,
2098  instance->our_nodeid & 0xFF);
2099  knet_log_printf (LOGSYS_LEVEL_INFO, "Local nozzle MAC address is %s", mac);
2100 
2101  if (name_res == CS_OK && name_str) {
2102  /* Reconfigure */
2103  if (instance->nozzle_name) {
2104  remove_nozzle_device(instance);
2105  free_nozzle(instance);
2106  }
2107 
2108  res = create_nozzle_device(knet_context, name_str, ipaddr_str, prefix_str,
2109  mac);
2110 
2111  instance->nozzle_name = strdup(name_str);
2112  instance->nozzle_ipaddr = strdup(ipaddr_str);
2113  instance->nozzle_prefix = strdup(prefix_str);
2114  instance->nozzle_macaddr = strdup(macaddr_str);
2115  if (!instance->nozzle_name || !instance->nozzle_ipaddr ||
2116  !instance->nozzle_prefix) {
2117  knet_log_printf (LOGSYS_LEVEL_ERROR, "strdup failed in nozzle allocation");
2118  /*
2119  * This 'free' will cause a complete reconfigure of the device next time we reload
2120  * but will also let the the current device keep working until then.
2121  * remove_nozzle() only needs the, statically-allocated, nozzle_handle
2122  */
2123  free_nozzle(instance);
2124  }
2125  }
2126 
2127 out_free:
2128  free(name_str);
2129  free(ipaddr_str);
2130  free(prefix_str);
2131  if (macaddr_res == CS_OK) {
2132  free(macaddr_str);
2133  }
2134 
2135  return res;
2136 }
2137 #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:97
@ CS_ERR_BUSY
Definition: corotypes.h:107
@ CS_ERR_TRY_AGAIN
Definition: corotypes.h:103
@ CS_OK
Definition: corotypes.h:98
@ CS_ERR_INVALID_PARAM
Definition: corotypes.h:104
@ CS_ERR_LIBRARY
Definition: corotypes.h:99
@ CS_ERR_NOT_EXIST
Definition: corotypes.h:109
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:433
#define LOGSYS_LEVEL_DEBUG
Definition: logsys.h:76
#define ENTER
Definition: logsys.h:324
const char * corosync_get_config_file(void)
Definition: main.c:204
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
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:1265
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:1375
int totemknet_finalize(void *knet_context)
Definition: totemknet.c:586
int totemknet_recv_flush(void *knet_context)
Definition: totemknet.c:1243
int totemknet_member_list_rebind_ip(void *knet_context)
Definition: totemknet.c:1560
int totemknet_processor_count_set(void *knet_context, int processor_count)
Definition: totemknet.c:1236
int totemknet_mcast_noflush_send(void *knet_context, const void *msg, unsigned int msg_len)
Definition: totemknet.c:1278
struct totemknet_instance * global_instance
Definition: totemknet.c:187
void totemknet_buffer_release(void *ptr)
Definition: totemknet.c:1231
int totemknet_ifaces_get(void *knet_context, char ***status, unsigned int *iface_count)
Definition: totemknet.c:491
void * totemknet_buffer_alloc(void)
Definition: totemknet.c:1225
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:1392
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:1514
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:973
int totemknet_token_send(void *knet_context, const void *msg, unsigned int msg_len)
Definition: totemknet.c:1253
#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:1686
#define OWN_INDEX_NONE
Definition: totemknet.c:488
int totemknet_handle_get_stats(struct knet_handle_stats *stats)
Definition: totemknet.c:1723
#define MSG_NOSIGNAL
Definition: totemknet.c:83
void totemknet_stats_clear(void *knet_context)
Definition: totemknet.c:1677
int totemknet_send_flush(void *knet_context)
Definition: totemknet.c:1248
void totemknet_net_mtu_adjust(void *knet_context, struct totem_config *totem_config)
Definition: totemknet.c:1302
#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:1309
#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:1588
int totemknet_crypto_reconfigure_phase(void *knet_context, struct totem_config *totem_config, cfg_message_crypto_reconfig_phase_t phase)
Definition: totemknet.c:1618
#define libknet_log_printf(level, format, args...)
Definition: totemknet.c:241
int totemknet_recv_mcast_empty(void *knet_context)
Definition: totemknet.c:1323
int totemknet_iface_check(void *knet_context)
Definition: totemknet.c:1292
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:736
void stats_knet_del_member(knet_node_id_t nodeid, uint8_t link)
Definition: stats.c:723
void stats_knet_add_member(knet_node_id_t nodeid, uint8_t link)
Definition: stats.c:713