2 * l2_fib.c : layer 2 forwarding table (aka mac table)
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include <vlib/vlib.h>
20 #include <vnet/vnet.h>
21 #include <vnet/pg/pg.h>
22 #include <vnet/ethernet/ethernet.h>
25 #include <vppinfra/error.h>
26 #include <vppinfra/hash.h>
27 #include <vnet/l2/l2_input.h>
28 #include <vnet/l2/l2_fib.h>
29 #include <vnet/l2/l2_learn.h>
30 #include <vnet/l2/l2_bd.h>
32 #include <vppinfra/bihash_template.c>
36 * @brief Ethernet MAC Address FIB Table Management.
38 * The MAC Address forwarding table for bridge-domains is called the l2fib.
39 * Entries are added automatically as part of mac learning, but MAC Addresses
40 * entries can also be added manually.
48 BVT (clib_bihash) mac_table;
50 /* convenience variables */
51 vlib_main_t *vlib_main;
52 vnet_main_t *vnet_main;
55 l2fib_main_t l2fib_main;
58 /** Format sw_if_index. If the value is ~0, use the text "N/A" */
60 format_vnet_sw_if_index_name_with_NA (u8 * s, va_list * args)
62 vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
63 u32 sw_if_index = va_arg (*args, u32);
64 if (sw_if_index == ~0)
65 return format (s, "N/A");
67 return format (s, "%U",
68 format_vnet_sw_interface_name, vnm,
69 vnet_get_sw_interface (vnm, sw_if_index));
73 l2fib_table_dump (u32 bd_index, l2fib_entry_key_t ** l2fe_key,
74 l2fib_entry_result_t ** l2fe_res)
76 l2fib_main_t *msm = &l2fib_main;
77 BVT (clib_bihash) * h = &msm->mac_table;
78 clib_bihash_bucket_t *b;
79 BVT (clib_bihash_value) * v;
80 l2fib_entry_key_t key;
81 l2fib_entry_result_t result;
84 for (i = 0; i < h->nbuckets; i++)
89 v = BV (clib_bihash_get_value) (h, b->offset);
90 for (j = 0; j < (1 << b->log2_pages); j++)
92 for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
94 if (v->kvp[k].key == ~0ULL && v->kvp[k].value == ~0ULL)
97 key.raw = v->kvp[k].key;
98 result.raw = v->kvp[k].value;
100 if ((bd_index == ~0) || (bd_index == key.fields.bd_index))
102 vec_add1 (*l2fe_key, key);
103 vec_add1 (*l2fe_res, result);
111 /** Display the contents of the l2fib. */
112 static clib_error_t *
113 show_l2fib (vlib_main_t * vm,
114 unformat_input_t * input, vlib_cli_command_t * cmd)
116 bd_main_t *bdm = &bd_main;
117 l2fib_main_t *msm = &l2fib_main;
118 l2_bridge_domain_t *bd_config;
119 BVT (clib_bihash) * h = &msm->mac_table;
120 clib_bihash_bucket_t *b;
121 BVT (clib_bihash_value) * v;
122 l2fib_entry_key_t key;
123 l2fib_entry_result_t result;
125 u64 total_entries = 0;
129 u32 bd_id, bd_index = ~0;
130 u8 now = (u8) (vlib_time_now (vm) / 60);
133 if (unformat (input, "raw"))
135 else if (unformat (input, "verbose"))
137 else if (unformat (input, "bd_index %d", &bd_index))
139 else if (unformat (input, "bd_id %d", &bd_id))
141 uword *p = hash_get (bdm->bd_index_by_bd_id, bd_id);
149 vlib_cli_output (vm, "no such bridge domain id");
154 for (i = 0; i < h->nbuckets; i++)
159 v = BV (clib_bihash_get_value) (h, b->offset);
160 for (j = 0; j < (1 << b->log2_pages); j++)
162 for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
164 if (v->kvp[k].key == ~0ULL && v->kvp[k].value == ~0ULL)
167 if (verbose && first_entry)
171 "%=19s%=7s%=7s%=8s%=9s%=7s%=7s%=5s%=30s",
172 "Mac-Address", "BD-Idx", "If-Idx",
173 "BSN-ISN", "Age(min)", "static", "filter",
174 "bvi", "Interface-Name");
177 key.raw = v->kvp[k].key;
178 result.raw = v->kvp[k].value;
181 & ((bd_index >> 31) || (bd_index == key.fields.bd_index)))
183 bd_config = vec_elt_at_index (l2input_main.bd_configs,
184 key.fields.bd_index);
186 if (bd_config->mac_age && !result.fields.static_mac)
188 i16 delta = now - result.fields.timestamp;
189 delta += delta < 0 ? 256 : 0;
190 s = format (s, "%d", delta);
196 "%=19U%=7d%=7d %3d/%-3d%=9v%=7s%=7s%=5s%=30U",
197 format_ethernet_address, key.fields.mac,
199 result.fields.sw_if_index == ~0
200 ? -1 : result.fields.sw_if_index,
201 result.fields.bd_sn, result.fields.int_sn,
202 s, result.fields.static_mac ? "*" : "-",
203 result.fields.filter ? "*" : "-",
204 result.fields.bvi ? "*" : "-",
205 format_vnet_sw_if_index_name_with_NA,
206 msm->vnet_main, result.fields.sw_if_index);
207 vec_reset_length (s);
215 if (total_entries == 0)
216 vlib_cli_output (vm, "no l2fib entries");
219 "%lld l2fib entries with %d learned (or non-static) entries",
220 total_entries, l2learn_main.global_learn_count);
223 vlib_cli_output (vm, "Raw Hash Table:\n%U\n",
224 BV (format_bihash), h, 1 /* verbose */ );
231 * This command dispays the MAC Address entries of the L2 FIB table.
232 * Output can be filtered to just get the number of MAC Addresses or display
233 * each MAC Address for all bridge domains or just a single bridge domain.
236 * Example of how to display the number of MAC Address entries in the L2
238 * @cliexstart{show l2fib}
241 * Example of how to display all the MAC Address entries in the L2
243 * @cliexstart{show l2fib verbose}
244 * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
245 * 52:54:00:53:18:33 1 GigabitEthernet0/8/0.200 3 0 0 0 0 0
246 * 52:54:00:53:18:55 1 GigabitEthernet0/8/0.200 3 1 0 0 0 0
247 * 52:54:00:53:18:77 1 N/A -1 1 1 0 0 0
252 VLIB_CLI_COMMAND (show_l2fib_cli, static) = {
253 .path = "show l2fib",
254 .short_help = "show l2fib [verbose | bd_id <nn> | bd_index <nn> | raw]",
255 .function = show_l2fib,
260 /* Remove all entries from the l2fib */
262 l2fib_clear_table (uint keep_static)
264 l2fib_main_t *mp = &l2fib_main;
268 /* TODO: remove only non-static entries */
272 /* Remove all entries */
273 BV (clib_bihash_free) (&mp->mac_table);
274 BV (clib_bihash_init) (&mp->mac_table, "l2fib mac table",
275 L2FIB_NUM_BUCKETS, L2FIB_MEMORY_SIZE);
278 l2learn_main.global_learn_count = 0;
281 /** Clear all entries in L2FIB.
282 * @TODO: Later we may want a way to remove only the non-static entries
284 static clib_error_t *
285 clear_l2fib (vlib_main_t * vm,
286 unformat_input_t * input, vlib_cli_command_t * cmd)
288 l2fib_clear_table (0);
293 * This command clears all the MAC Address entries from the L2 FIB table.
296 * Example of how to clear the L2 FIB Table:
297 * @cliexcmd{clear l2fib}
298 * Example to show the L2 FIB Table has been cleared:
299 * @cliexstart{show l2fib verbose}
304 VLIB_CLI_COMMAND (clear_l2fib_cli, static) = {
305 .path = "clear l2fib",
306 .short_help = "clear l2fib",
307 .function = clear_l2fib,
313 * Add an entry to the l2fib.
314 * If the entry already exists then overwrite it
317 l2fib_add_entry (u64 mac,
319 u32 sw_if_index, u32 static_mac, u32 filter_mac, u32 bvi_mac)
321 l2fib_entry_key_t key;
322 l2fib_entry_result_t result;
323 __attribute__ ((unused)) u32 bucket_contents;
324 l2fib_main_t *mp = &l2fib_main;
325 BVT (clib_bihash_kv) kv;
328 key.raw = l2fib_make_key ((u8 *) & mac, bd_index);
331 result.raw = 0; /* clear all fields */
332 result.fields.sw_if_index = sw_if_index;
333 result.fields.static_mac = static_mac;
334 result.fields.filter = filter_mac;
335 result.fields.bvi = bvi_mac;
338 l2_input_config_t *int_config = l2input_intf_config (sw_if_index);
339 l2_bridge_domain_t *bd_config =
340 vec_elt_at_index (l2input_main.bd_configs,
342 result.fields.int_sn = int_config->seq_num;
343 result.fields.bd_sn = bd_config->seq_num;
347 kv.value = result.raw;
349 BV (clib_bihash_add_del) (&mp->mac_table, &kv, 1 /* is_add */ );
351 /* increment counter if dynamically learned mac */
352 if (result.fields.static_mac == 0)
354 l2learn_main.global_learn_count++;
359 * Add an entry to the L2FIB.
361 * l2fib add <mac> <bd> <intf> [static] [bvi]
362 * l2fib add <mac> <bd> filter
363 * Note that filter and bvi entries are always static
365 static clib_error_t *
366 l2fib_add (vlib_main_t * vm,
367 unformat_input_t * input, vlib_cli_command_t * cmd)
369 bd_main_t *bdm = &bd_main;
370 vnet_main_t *vnm = vnet_get_main ();
371 clib_error_t *error = 0;
375 u32 sw_if_index = ~0;
381 if (!unformat_user (input, unformat_ethernet_address, &mac))
383 error = clib_error_return (0, "expected mac address `%U'",
384 format_unformat_error, input);
388 if (!unformat (input, "%d", &bd_id))
390 error = clib_error_return (0, "expected bridge domain ID `%U'",
391 format_unformat_error, input);
395 p = hash_get (bdm->bd_index_by_bd_id, bd_id);
398 error = clib_error_return (0, "bridge domain ID %d invalid", bd_id);
403 if (unformat (input, "filter"))
413 (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
415 error = clib_error_return (0, "unknown interface `%U'",
416 format_unformat_error, input);
419 if (unformat (input, "static"))
423 else if (unformat (input, "bvi"))
430 l2fib_add_entry (mac, bd_index, sw_if_index, static_mac, filter_mac,
438 * This command adds a MAC Address entry to the L2 FIB table
439 * of an existing bridge-domain. The MAC Address can be static
440 * or dynamic. This command also allows a filter to be added,
441 * such that packets with given MAC Addresses (source mac or
442 * destination mac match) are dropped.
445 * Example of how to add a dynamic MAC Address entry to the L2 FIB table
446 * of a bridge-domain (where 200 is the bridge-domain-id):
447 * @cliexcmd{l2fib add 52:54:00:53:18:33 200 GigabitEthernet0/8/0.200}
448 * Example of how to add a static MAC Address entry to the L2 FIB table
449 * of a bridge-domain (where 200 is the bridge-domain-id):
450 * @cliexcmd{l2fib add 52:54:00:53:18:55 200 GigabitEthernet0/8/0.200 static}
451 * Example of how to add a filter such that a packet with the given MAC
452 * Address will be dropped in a given bridge-domain (where 200 is the
454 * @cliexcmd{l2fib add 52:54:00:53:18:77 200 filter}
455 * Example of show command of the provisioned MAC Addresses and filters:
456 * @cliexstart{show l2fib verbose}
457 * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
458 * 52:54:00:53:18:33 1 GigabitEthernet0/8/0.200 3 0 0 0 0 0
459 * 52:54:00:53:18:55 1 GigabitEthernet0/8/0.200 3 1 0 0 0 0
460 * 52:54:00:53:18:77 1 N/A -1 1 1 0 0 0
465 VLIB_CLI_COMMAND (l2fib_add_cli, static) = {
467 .short_help = "l2fib add <mac> <bridge-domain-id> filter | <intf> [static | bvi]",
468 .function = l2fib_add,
473 static clib_error_t *
474 l2fib_test_command_fn (vlib_main_t * vm,
475 unformat_input_t * input, vlib_cli_command_t * cmd)
477 clib_error_t *error = 0;
490 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
492 if (unformat (input, "mac %U", unformat_ethernet_address, &mac))
494 else if (unformat (input, "add"))
496 else if (unformat (input, "del"))
498 else if (unformat (input, "check"))
500 else if (unformat (input, "count %d", &count))
507 return clib_error_return (0, "mac not set");
509 if (is_add == 0 && is_del == 0 && is_check == 0)
510 return clib_error_return (0,
511 "noop: pick at least one of (add,del,check)");
517 for (i = 0; i < count; i++)
520 l2fib_add_entry (mac, bd_index, sw_if_index, mac,
521 filter_mac, bvi_mac);
522 tmp = clib_net_to_host_u64 (mac);
526 mac = clib_host_to_net_u64 (tmp);
532 BVT (clib_bihash_kv) kv;
533 l2fib_main_t *mp = &l2fib_main;
537 for (i = 0; i < count; i++)
540 kv.key = l2fib_make_key ((u8 *) & mac, bd_index);
541 if (BV (clib_bihash_search) (&mp->mac_table, &kv, &kv))
543 clib_warning ("key %U AWOL", format_ethernet_address, &mac);
546 tmp = clib_net_to_host_u64 (mac);
550 mac = clib_host_to_net_u64 (tmp);
556 for (i = 0; i < count; i++)
560 l2fib_del_entry (mac, bd_index);
562 tmp = clib_net_to_host_u64 (mac);
566 mac = clib_host_to_net_u64 (tmp);
574 * The set of '<em>test l2fib</em>' commands allow the L2 FIB table of the default
575 * bridge domain (bridge-domain-id of 0) to be modified.
579 * Example of how to add a set of 4 sequential MAC Address entries to L2
580 * FIB table of the default bridge-domain:
581 * @cliexcmd{test l2fib add mac 52:54:00:53:00:00 count 4}
583 * Show the set of 4 sequential MAC Address entries that were added:
584 * @cliexstart{show l2fib verbose}
585 * Mac Address BD Idx Interface Index static filter bvi refresh timestamp
586 * 52:54:00:53:00:00 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
587 * 52:54:00:53:00:01 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
588 * 52:54:00:53:00:03 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
589 * 52:54:00:53:00:02 0 GigabitEthernet0/8/0.300 8 0 0 0 0 0
593 * Example of how to check that the set of 4 sequential MAC Address
594 * entries were added to L2 FIB table of the default
595 * bridge-domain. Used a count of 5 to produce an error:
597 * @cliexcmd{test l2fib check mac 52:54:00:53:00:00 count 5}
598 * The output of the check command is in the log files. Log file
599 * location may vary based on your OS and Version:
601 * <b><em># tail -f /var/log/messages | grep l2fib_test_command_fn</em></b>
603 * Sep 7 17:15:24 localhost vnet[4952]: l2fib_test_command_fn:446: key 52:54:00:53:00:04 AWOL
605 * Example of how to delete a set of 4 sequential MAC Address entries
606 * from L2 FIB table of the default bridge-domain:
607 * @cliexcmd{test l2fib del mac 52:54:00:53:00:00 count 4}
611 VLIB_CLI_COMMAND (l2fib_test_command, static) = {
612 .path = "test l2fib",
613 .short_help = "test l2fib [add|del|check] mac <base-addr> count <nn>",
614 .function = l2fib_test_command_fn,
620 * Delete an entry from the l2fib.
621 * Return 0 if the entry was deleted, or 1 if it was not found
624 l2fib_del_entry (u64 mac, u32 bd_index)
627 l2fib_entry_result_t result;
628 l2fib_main_t *mp = &l2fib_main;
629 BVT (clib_bihash_kv) kv;
632 kv.key = l2fib_make_key ((u8 *) & mac, bd_index);
634 if (BV (clib_bihash_search) (&mp->mac_table, &kv, &kv))
637 result.raw = kv.value;
639 /* decrement counter if dynamically learned mac */
640 if (result.fields.static_mac == 0)
642 if (l2learn_main.global_learn_count > 0)
644 l2learn_main.global_learn_count--;
648 /* Remove entry from hash table */
649 BV (clib_bihash_add_del) (&mp->mac_table, &kv, 0 /* is_add */ );
654 * Delete an entry from the L2FIB.
656 * l2fib del <mac> <bd-id>
658 static clib_error_t *
659 l2fib_del (vlib_main_t * vm,
660 unformat_input_t * input, vlib_cli_command_t * cmd)
662 bd_main_t *bdm = &bd_main;
663 clib_error_t *error = 0;
669 if (!unformat_user (input, unformat_ethernet_address, &mac))
671 error = clib_error_return (0, "expected mac address `%U'",
672 format_unformat_error, input);
676 if (!unformat (input, "%d", &bd_id))
678 error = clib_error_return (0, "expected bridge domain ID `%U'",
679 format_unformat_error, input);
683 p = hash_get (bdm->bd_index_by_bd_id, bd_id);
686 error = clib_error_return (0, "bridge domain ID %d invalid", bd_id);
691 /* Delete the entry */
692 if (l2fib_del_entry (mac, bd_index))
694 error = clib_error_return (0, "mac entry not found");
703 * This command deletes an existing MAC Address entry from the L2 FIB
704 * table of an existing bridge-domain.
707 * Example of how to delete a MAC Address entry from the L2 FIB table of a bridge-domain (where 200 is the bridge-domain-id):
708 * @cliexcmd{l2fib del 52:54:00:53:18:33 200}
711 VLIB_CLI_COMMAND (l2fib_del_cli, static) = {
713 .short_help = "l2fib del <mac> <bridge-domain-id>",
714 .function = l2fib_del,
719 Kick off ager to scan MACs to age/delete MAC entries
722 l2fib_start_ager_scan (vlib_main_t * vm)
724 l2_bridge_domain_t *bd_config;
727 /* check if there is at least one bd with mac aging enabled */
728 vec_foreach (bd_config, l2input_main.bd_configs)
729 if (bd_config->bd_id != ~0 && bd_config->mac_age != 0)
732 vlib_process_signal_event (vm, l2fib_mac_age_scanner_process_node.index,
733 enable ? L2_MAC_AGE_PROCESS_EVENT_START :
734 L2_MAC_AGE_PROCESS_EVENT_ONE_PASS, 0);
738 Flush all learned MACs from an interface
741 l2fib_flush_int_mac (vlib_main_t * vm, u32 sw_if_index)
743 l2_input_config_t *int_config;
744 int_config = l2input_intf_config (sw_if_index);
745 int_config->seq_num += 1;
746 l2fib_start_ager_scan (vm);
750 Flush all learned MACs in a bridge domain
753 l2fib_flush_bd_mac (vlib_main_t * vm, u32 bd_index)
755 l2_bridge_domain_t *bd_config;
756 bd_config = l2input_bd_config (bd_index);
757 bd_config->seq_num += 1;
758 l2fib_start_ager_scan (vm);
762 Flush MACs, except static ones, associated with an interface
764 l2fib flush-mac interface <if-name>
766 static clib_error_t *
767 l2fib_flush_mac_int (vlib_main_t * vm,
768 unformat_input_t * input, vlib_cli_command_t * cmd)
770 vnet_main_t *vnm = vnet_get_main ();
771 clib_error_t *error = 0;
774 if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
776 error = clib_error_return (0, "unknown interface `%U'",
777 format_unformat_error, input);
781 l2fib_flush_int_mac (vm, sw_if_index);
788 * This command kick off ager to delete all existing MAC Address entries,
789 * except static ones, associated with an interface from the L2 FIB table.
792 * Example of how to flush MAC Address entries learned on an interface from the L2 FIB table:
793 * @cliexcmd{l2fib flush-mac interface GigabitEthernet2/1/0}
796 VLIB_CLI_COMMAND (l2fib_flush_mac_int_cli, static) = {
797 .path = "l2fib flush-mac interface",
798 .short_help = "l2fib flush-mac interface <if-name>",
799 .function = l2fib_flush_mac_int,
804 Flush bridge-domain MACs except static ones.
806 l2fib flush-mac bridge-domain <bd-id>
808 static clib_error_t *
809 l2fib_flush_mac_bd (vlib_main_t * vm,
810 unformat_input_t * input, vlib_cli_command_t * cmd)
812 bd_main_t *bdm = &bd_main;
813 clib_error_t *error = 0;
817 if (!unformat (input, "%d", &bd_id))
819 error = clib_error_return (0, "expecting bridge-domain id but got `%U'",
820 format_unformat_error, input);
824 p = hash_get (bdm->bd_index_by_bd_id, bd_id);
828 return clib_error_return (0, "No such bridge domain %d", bd_id);
830 l2fib_flush_bd_mac (vm, bd_index);
837 * This command kick off ager to delete all existing MAC Address entries,
838 * except static ones, in a bridge domain from the L2 FIB table.
841 * Example of how to flush MAC Address entries learned in a bridge domain from the L2 FIB table:
842 * @cliexcmd{l2fib flush-mac bridge-domain 1000}
845 VLIB_CLI_COMMAND (l2fib_flush_mac_bd_cli, static) = {
846 .path = "l2fib flush-mac bridge-domain",
847 .short_help = "l2fib flush-mac bridge-domain <bd-id>",
848 .function = l2fib_flush_mac_bd,
853 l2fib_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
855 l2_input_config_t *config = l2input_intf_config (sw_if_index);
856 if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0 && config->bridge)
857 l2fib_flush_int_mac (vnm->vlib_main, sw_if_index);
861 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (l2fib_sw_interface_up_down);
863 BVT (clib_bihash) * get_mac_table (void)
865 l2fib_main_t *mp = &l2fib_main;
866 return &mp->mac_table;
870 l2fib_mac_age_scanner_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
873 uword event_type, *event_data = 0;
874 l2fib_main_t *msm = &l2fib_main;
875 l2_input_config_t *int_config;
876 l2_bridge_domain_t *bd_config;
877 BVT (clib_bihash) * h = &msm->mac_table;
878 clib_bihash_bucket_t *b;
879 BVT (clib_bihash_value) * v;
880 l2fib_entry_key_t key;
881 l2fib_entry_result_t result;
884 f64 start_time, last_run_duration = 0, t;
890 vlib_process_wait_for_event_or_clock (vm, 60 - last_run_duration);
892 vlib_process_wait_for_event (vm);
894 event_type = vlib_process_get_events (vm, &event_data);
895 vec_reset_length (event_data);
901 case L2_MAC_AGE_PROCESS_EVENT_START:
904 case L2_MAC_AGE_PROCESS_EVENT_STOP:
907 case L2_MAC_AGE_PROCESS_EVENT_ONE_PASS:
913 last_run_duration = start_time = vlib_time_now (vm);
914 for (i = 0; i < h->nbuckets; i++)
916 /* Allow no more than 10us without a pause */
917 t = vlib_time_now (vm);
918 if (t > start_time + 10e-6)
920 vlib_process_suspend (vm, 100e-6); /* suspend for 100 us */
921 start_time = vlib_time_now (vm);
924 if (i < (h->nbuckets - 3))
926 b = &h->buckets[i + 3];
927 CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
928 b = &h->buckets[i + 1];
931 v = BV (clib_bihash_get_value) (h, b->offset);
932 CLIB_PREFETCH (v, CLIB_CACHE_LINE_BYTES, LOAD);
939 v = BV (clib_bihash_get_value) (h, b->offset);
940 for (j = 0; j < (1 << b->log2_pages); j++)
942 for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
944 if (v->kvp[k].key == ~0ULL && v->kvp[k].value == ~0ULL)
947 key.raw = v->kvp[k].key;
948 result.raw = v->kvp[k].value;
950 if (result.fields.static_mac)
954 l2input_intf_config (result.fields.sw_if_index);
956 vec_elt_at_index (l2input_main.bd_configs,
957 key.fields.bd_index);
959 if ((result.fields.int_sn != int_config->seq_num) ||
960 (result.fields.bd_sn != bd_config->seq_num))
962 void *p = &key.fields.mac;
963 l2fib_del_entry (*(u64 *) p, key.fields.bd_index);
967 if (bd_config->mac_age == 0)
970 delta = (u8) (start_time / 60) - result.fields.timestamp;
971 delta += delta < 0 ? 256 : 0;
973 if (delta > bd_config->mac_age)
975 void *p = &key.fields.mac;
976 l2fib_del_entry (*(u64 *) p, key.fields.bd_index);
982 last_run_duration = vlib_time_now (vm) - last_run_duration;
988 VLIB_REGISTER_NODE (l2fib_mac_age_scanner_process_node) = {
989 .function = l2fib_mac_age_scanner_process,
990 .type = VLIB_NODE_TYPE_PROCESS,
991 .name = "l2fib-mac-age-scanner-process",
996 l2fib_init (vlib_main_t * vm)
998 l2fib_main_t *mp = &l2fib_main;
999 l2fib_entry_key_t test_key;
1003 mp->vnet_main = vnet_get_main ();
1005 /* Create the hash table */
1006 BV (clib_bihash_init) (&mp->mac_table, "l2fib mac table",
1007 L2FIB_NUM_BUCKETS, L2FIB_MEMORY_SIZE);
1009 /* verify the key constructor is good, since it is endian-sensitive */
1010 memset (test_mac, 0, sizeof (test_mac));
1013 test_key.raw = l2fib_make_key ((u8 *) & test_mac, 0x1234);
1014 ASSERT (test_key.fields.mac[0] == 0x11);
1015 ASSERT (test_key.fields.bd_index == 0x1234);
1020 VLIB_INIT_FUNCTION (l2fib_init);
1023 * fd.io coding-style-patch-verification: ON
1026 * eval: (c-set-style "gnu")