FD.io VPP  v19.01.3-6-g70449b9b9
Vector Packet Processing
hash_lookup.c
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1 /*
2  *------------------------------------------------------------------
3  * Copyright (c) 2017 Cisco and/or its affiliates.
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at:
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *------------------------------------------------------------------
16  */
17 
18 #include <stddef.h>
19 #include <netinet/in.h>
20 
21 #include <vlibapi/api.h>
22 #include <vlibmemory/api.h>
23 
24 #include <vlib/vlib.h>
25 #include <vnet/vnet.h>
26 #include <vnet/pg/pg.h>
27 #include <vppinfra/error.h>
28 #include <vnet/plugin/plugin.h>
29 #include <acl/acl.h>
30 #include <vppinfra/bihash_48_8.h>
31 
32 #include "hash_lookup.h"
33 #include "hash_lookup_private.h"
34 
35 
37 {
38  applied_hash_ace_entry_t **applied_hash_aces = vec_elt_at_index(am->hash_entry_vec_by_lc_index, lc_index);
39 
40 /*is_input ? vec_elt_at_index(am->input_hash_entry_vec_by_sw_if_index, sw_if_index)
41  : vec_elt_at_index(am->output_hash_entry_vec_by_sw_if_index, sw_if_index);
42 */
43  return applied_hash_aces;
44 }
45 
46 
47 static void
49 {
50  DBG("HASH ADD/DEL: %016llx %016llx %016llx %016llx %016llx %016llx %016llx add %d",
51  kv->key[0], kv->key[1], kv->key[2],
52  kv->key[3], kv->key[4], kv->key[5], kv->value, is_add);
53  BV (clib_bihash_add_del) (&am->acl_lookup_hash, kv, is_add);
54 }
55 
56 /*
57  * TupleMerge
58  *
59  * Initial adaptation by Valerio Bruschi (valerio.bruschi@telecom-paristech.fr)
60  * based on the TupleMerge [1] simulator kindly made available
61  * by James Daly (dalyjamese@gmail.com) and Eric Torng (torng@cse.msu.edu)
62  * ( http://www.cse.msu.edu/~dalyjame/ or http://www.cse.msu.edu/~torng/ ),
63  * refactoring by Andrew Yourtchenko.
64  *
65  * [1] James Daly, Eric Torng "TupleMerge: Building Online Packet Classifiers
66  * by Omitting Bits", In Proc. IEEE ICCCN 2017, pp. 1-10
67  *
68  */
69 
70 static int
72 {
73  int counter = 0;
74  while (word)
75  {
76  counter += word & 1;
77  word >>= 1;
78  }
79  return counter;
80 }
81 
82 /* check if mask2 can be contained by mask1 */
83 static u8
85 {
86  int i;
87  if (is_ip6)
88  {
89  for (i = 0; i < 2; i++)
90  {
91  if ((mask1->ip6_addr[0].as_u64[i] & mask2->ip6_addr[0].as_u64[i]) !=
92  mask1->ip6_addr[0].as_u64[i])
93  return 0;
94  if ((mask1->ip6_addr[1].as_u64[i] & mask2->ip6_addr[1].as_u64[i]) !=
95  mask1->ip6_addr[1].as_u64[i])
96  return 0;
97  }
98  }
99  else
100  {
101  /* check the pads, both masks must have it 0 */
102  u32 padcheck = 0;
103  int i;
104  for (i=0; i<6; i++) {
105  padcheck |= mask1->l3_zero_pad[i];
106  padcheck |= mask2->l3_zero_pad[i];
107  }
108  if (padcheck != 0)
109  return 0;
110  if ((mask1->ip4_addr[0].as_u32 & mask2->ip4_addr[0].as_u32) !=
111  mask1->ip4_addr[0].as_u32)
112  return 0;
113  if ((mask1->ip4_addr[1].as_u32 & mask2->ip4_addr[1].as_u32) !=
114  mask1->ip4_addr[1].as_u32)
115  return 0;
116  }
117 
118  /* take care if port are not exact-match */
119  if ((mask1->l4.as_u64 & mask2->l4.as_u64) != mask1->l4.as_u64)
120  return 0;
121 
122  if ((mask1->pkt.as_u64 & mask2->pkt.as_u64) != mask1->pkt.as_u64)
123  return 0;
124 
125  return 1;
126 }
127 
128 
129 
130 /*
131  * TupleMerge:
132  *
133  * Consider the situation when we have to create a new table
134  * T for a given rule R. This occurs for the first rule inserted and
135  * for later rules if it is incompatible with all existing tables.
136  * In this event, we need to determine mT for a new table.
137  * Setting mT = mR is not a good strategy; if another similar,
138  * but slightly less specific, rule appears we will be unable to
139  * add it to T and will thus have to create another new table. We
140  * thus consider two factors: is the rule more strongly aligned
141  * with source or destination addresses (usually the two most
142  * important fields) and how much slack needs to be given to
143  * allow for other rules. If the source and destination addresses
144  * are close together (within 4 bits for our experiments), we use
145  * both of them. Otherwise, we drop the smaller (less specific)
146  * address and its associated port field from consideration; R is
147  * predominantly aligned with one of the two fields and should
148  * be grouped with other similar rules. This is similar to TSS
149  * dropping port fields, but since it is based on observable rule
150  * characteristics it is more likely to keep important fields and
151  * discard less useful ones.
152  * We then look at the absolute lengths of the addresses. If
153  * the address is long, we are more likely to try to add shorter
154  * lengths and likewise the reverse. We thus remove a few bits
155  * from both address fields with more bits removed from longer
156  * addresses. For 32 bit addresses, we remove 4 bits, 3 for more
157  * than 24, 2 for more than 16, and so on (so 8 and fewer bits
158  * don’t have any removed). We only do this for prefix fields like
159  * addresses; both range fields (like ports) and exact match fields
160  * (like protocol) should remain as they are.
161  */
162 
163 
164 static u32
165 shift_ip4_if(u32 mask, u32 thresh, int numshifts, u32 else_val)
166 {
167  if (mask > thresh)
168  return clib_host_to_net_u32((clib_net_to_host_u32(mask) << numshifts) & 0xFFFFFFFF);
169  else
170  return else_val;
171 }
172 
173 static void
174 relax_ip4_addr(ip4_address_t *ip4_mask, int relax2) {
175  int shifts_per_relax[2][4] = { { 6, 5, 4, 2 }, { 3, 2, 1, 1 } };
176 
177  int *shifts = shifts_per_relax[relax2];
178  if(ip4_mask->as_u32 == 0xffffffff)
179  ip4_mask->as_u32 = clib_host_to_net_u32((clib_net_to_host_u32(ip4_mask->as_u32) << shifts[0])&0xFFFFFFFF);
180  else
181  ip4_mask->as_u32 = shift_ip4_if(ip4_mask->as_u32, 0xffffff00, shifts[1],
182  shift_ip4_if(ip4_mask->as_u32, 0xffff0000, shifts[2],
183  shift_ip4_if(ip4_mask->as_u32, 0xff000000, shifts[3], ip4_mask->as_u32)));
184 }
185 
186 static void
187 relax_ip6_addr(ip6_address_t *ip6_mask, int relax2) {
188  /*
189  * This "better than nothing" relax logic is based on heuristics
190  * from IPv6 knowledge, and may not be optimal.
191  * Some further tuning may be needed in the future.
192  */
193  if (ip6_mask->as_u64[0] == 0xffffffffffffffffULL) {
194  if (ip6_mask->as_u64[1] == 0xffffffffffffffffULL) {
195  /* relax a /128 down to /64 - likely to have more hosts */
196  ip6_mask->as_u64[1] = 0;
197  } else if (ip6_mask->as_u64[1] == 0) {
198  /* relax a /64 down to /56 - likely to have more subnets */
199  ip6_mask->as_u64[0] = clib_host_to_net_u64(0xffffffffffffff00ULL);
200  }
201  }
202 }
203 
204 static void
205 relax_tuple(fa_5tuple_t *mask, int is_ip6, int relax2){
206  fa_5tuple_t save_mask = *mask;
207 
208  int counter_s = 0, counter_d = 0;
209  if (is_ip6) {
210  int i;
211  for(i=0; i<2; i++){
212  counter_s += count_bits(mask->ip6_addr[0].as_u64[i]);
213  counter_d += count_bits(mask->ip6_addr[1].as_u64[i]);
214  }
215  } else {
216  counter_s += count_bits(mask->ip4_addr[0].as_u32);
217  counter_d += count_bits(mask->ip4_addr[1].as_u32);
218  }
219 
220 /*
221  * is the rule more strongly aligned with source or destination addresses
222  * (usually the two most important fields) and how much slack needs to be
223  * given to allow for other rules. If the source and destination addresses
224  * are close together (within 4 bits for our experiments), we use both of them.
225  * Otherwise, we drop the smaller (less specific) address and its associated
226  * port field from consideration
227  */
228  const int deltaThreshold = 4;
229  /* const int deltaThreshold = 8; if IPV6? */
230  int delta = counter_s - counter_d;
231  if (-delta > deltaThreshold) {
232  if (is_ip6)
233  mask->ip6_addr[0].as_u64[1] = mask->ip6_addr[0].as_u64[0] = 0;
234  else
235  mask->ip4_addr[0].as_u32 = 0;
236  mask->l4.port[0] = 0;
237  } else if (delta > deltaThreshold) {
238  if (is_ip6)
239  mask->ip6_addr[1].as_u64[1] = mask->ip6_addr[1].as_u64[0] = 0;
240  else
241  mask->ip4_addr[1].as_u32 = 0;
242  mask->l4.port[1] = 0;
243  }
244 
245  if (is_ip6) {
246  relax_ip6_addr(&mask->ip6_addr[0], relax2);
247  relax_ip6_addr(&mask->ip6_addr[1], relax2);
248  } else {
249  relax_ip4_addr(&mask->ip4_addr[0], relax2);
250  relax_ip4_addr(&mask->ip4_addr[1], relax2);
251  }
252  mask->pkt.is_nonfirst_fragment = 0;
253  mask->pkt.l4_valid = 0;
254  if(!first_mask_contains_second_mask(is_ip6, mask, &save_mask)){
255  DBG( "TM-relaxing-ERROR");
256  *mask = save_mask;
257  }
258  DBG( "TM-relaxing-end");
259 }
260 
261 static u32
263 {
265  /* *INDENT-OFF* */
267  ({
268  if(memcmp(&mte->mask, mask, sizeof(*mask)) == 0)
269  return (mte - am->ace_mask_type_pool);
270  }));
271  /* *INDENT-ON* */
272  return ~0;
273 }
274 
275 static u32
277 {
278  u32 mask_type_index = find_mask_type_index(am, mask);
280  if(~0 == mask_type_index) {
282  mask_type_index = mte - am->ace_mask_type_pool;
283  clib_memcpy_fast(&mte->mask, mask, sizeof(mte->mask));
284  mte->refcount = 0;
285 
286  /*
287  * We can use only 16 bits, since in the match there is only u16 field.
288  * Realistically, once you go to 64K of mask types, it is a huge
289  * problem anyway, so we might as well stop half way.
290  */
291  ASSERT(mask_type_index < 32768);
292  }
293  mte = am->ace_mask_type_pool + mask_type_index;
294  mte->refcount++;
295  DBG0("ASSIGN MTE index %d new refcount %d", mask_type_index, mte->refcount);
296  return mask_type_index;
297 }
298 
299 static void
300 lock_mask_type_index(acl_main_t *am, u32 mask_type_index)
301 {
302  DBG0("LOCK MTE index %d", mask_type_index);
303  ace_mask_type_entry_t *mte = pool_elt_at_index(am->ace_mask_type_pool, mask_type_index);
304  mte->refcount++;
305  DBG0("LOCK MTE index %d new refcount %d", mask_type_index, mte->refcount);
306 }
307 
308 
309 static void
311 {
312  DBG0("RELEAS MTE index %d", mask_type_index);
313  ace_mask_type_entry_t *mte = pool_elt_at_index(am->ace_mask_type_pool, mask_type_index);
314  mte->refcount--;
315  DBG0("RELEAS MTE index %d new refcount %d", mask_type_index, mte->refcount);
316  if (mte->refcount == 0) {
317  /* we are not using this entry anymore */
318  clib_memset(mte, 0xae, sizeof(*mte));
319  pool_put(am->ace_mask_type_pool, mte);
320  }
321 }
322 
323 
324 static u32
325 tm_assign_mask_type_index(acl_main_t *am, fa_5tuple_t *mask, int is_ip6, u32 lc_index)
326 {
327  u32 mask_type_index = ~0;
328  u32 for_mask_type_index = ~0;
329  ace_mask_type_entry_t *mte = 0;
330  int order_index;
331  /* look for existing mask comparable with the one in input */
332 
333  hash_applied_mask_info_t **hash_applied_mask_info_vec = vec_elt_at_index(am->hash_applied_mask_info_vec_by_lc_index, lc_index);
335 
336  if (vec_len(*hash_applied_mask_info_vec) > 0) {
337  for(order_index = vec_len((*hash_applied_mask_info_vec)) -1; order_index >= 0; order_index--) {
338  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), order_index);
339  for_mask_type_index = minfo->mask_type_index;
340  mte = vec_elt_at_index(am->ace_mask_type_pool, for_mask_type_index);
341  if(first_mask_contains_second_mask(is_ip6, &mte->mask, mask)){
342  mask_type_index = (mte - am->ace_mask_type_pool);
343  lock_mask_type_index(am, mask_type_index);
344  break;
345  }
346  }
347  }
348 
349  if(~0 == mask_type_index) {
350  /* if no mask is found, then let's use a relaxed version of the original one, in order to be used by new ace_entries */
351  DBG( "TM-assigning mask type index-new one");
352  fa_5tuple_t relaxed_mask = *mask;
353  relax_tuple(&relaxed_mask, is_ip6, 0);
354  mask_type_index = assign_mask_type_index(am, &relaxed_mask);
355 
356  hash_applied_mask_info_t **hash_applied_mask_info_vec = vec_elt_at_index(am->hash_applied_mask_info_vec_by_lc_index, lc_index);
357 
358  int spot = vec_len((*hash_applied_mask_info_vec));
359  vec_validate((*hash_applied_mask_info_vec), spot);
360  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), spot);
361  minfo->mask_type_index = mask_type_index;
362  minfo->num_entries = 0;
363  minfo->max_collisions = 0;
364  minfo->first_rule_index = ~0;
365 
366  /*
367  * We can use only 16 bits, since in the match there is only u16 field.
368  * Realistically, once you go to 64K of mask types, it is a huge
369  * problem anyway, so we might as well stop half way.
370  */
371  ASSERT(mask_type_index < 32768);
372  }
373  mte = am->ace_mask_type_pool + mask_type_index;
374  DBG0("TM-ASSIGN MTE index %d new refcount %d", mask_type_index, mte->refcount);
375  return mask_type_index;
376 }
377 
378 
379 static void
381  applied_hash_ace_entry_t **applied_hash_aces,
382  u32 lc_index,
383  u32 new_index, clib_bihash_kv_48_8_t *kv)
384 {
385  fa_5tuple_t *kv_key = (fa_5tuple_t *)kv->key;
387  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), new_index);
389 
390  /* apply the mask to ace key */
393 
394  u64 *pmatch = (u64 *) &ace_info->match;
395  u64 *pmask = (u64 *)&mte->mask;
396  u64 *pkey = (u64 *)kv->key;
397 
398  *pkey++ = *pmatch++ & *pmask++;
399  *pkey++ = *pmatch++ & *pmask++;
400  *pkey++ = *pmatch++ & *pmask++;
401  *pkey++ = *pmatch++ & *pmask++;
402  *pkey++ = *pmatch++ & *pmask++;
403  *pkey++ = *pmatch++ & *pmask++;
404 
405  kv_key->pkt.mask_type_index_lsb = pae->mask_type_index;
406  kv_key->pkt.lc_index = lc_index;
407  kv_val->as_u64 = 0;
408  kv_val->applied_entry_index = new_index;
409 }
410 
411 static void
413  u32 lc_index,
414  applied_hash_ace_entry_t **applied_hash_aces,
415  u32 index, int is_add)
416 {
418 
419  fill_applied_hash_ace_kv(am, applied_hash_aces, lc_index, index, &kv);
420  hashtable_add_del(am, &kv, is_add);
421 }
422 
423 
424 static void
427  applied_hash_aces, u32 lc_index)
428 {
429  DBG0("remake applied hash mask info lc_index %d", lc_index);
430  hash_applied_mask_info_t *new_hash_applied_mask_info_vec =
432 
434  int i;
435  for (i = 0; i < vec_len ((*applied_hash_aces)); i++)
436  {
438  vec_elt_at_index ((*applied_hash_aces), i);
439 
440  /* check if mask_type_index is already there */
441  u32 new_pointer = vec_len (new_hash_applied_mask_info_vec);
442  int search;
443  for (search = 0; search < vec_len (new_hash_applied_mask_info_vec);
444  search++)
445  {
446  minfo = vec_elt_at_index (new_hash_applied_mask_info_vec, search);
447  if (minfo->mask_type_index == pae->mask_type_index)
448  break;
449  }
450 
451  vec_validate ((new_hash_applied_mask_info_vec), search);
452  minfo = vec_elt_at_index ((new_hash_applied_mask_info_vec), search);
453  if (search == new_pointer)
454  {
455  DBG0("remaking index %d", search);
456  minfo->mask_type_index = pae->mask_type_index;
457  minfo->num_entries = 0;
458  minfo->max_collisions = 0;
459  minfo->first_rule_index = ~0;
460  }
461 
462  minfo->num_entries = minfo->num_entries + 1;
463 
464  if (vec_len (pae->colliding_rules) > minfo->max_collisions)
465  minfo->max_collisions = vec_len (pae->colliding_rules);
466 
467  if (minfo->first_rule_index > i)
468  minfo->first_rule_index = i;
469  }
470 
471  hash_applied_mask_info_t **hash_applied_mask_info_vec =
473 
474  vec_free ((*hash_applied_mask_info_vec));
475  (*hash_applied_mask_info_vec) = new_hash_applied_mask_info_vec;
476 }
477 
478 static void
480  u32 applied_entry_index)
481 {
482  u32 i = 0;
483  u32 deleted = 0;
484  while (i < _vec_len ((*pvec)))
485  {
486  collision_match_rule_t *cr = vec_elt_at_index ((*pvec), i);
487  if (cr->applied_entry_index == applied_entry_index)
488  {
489  /* vec_del1 ((*pvec), i) would be more efficient but would reorder the elements. */
490  vec_delete((*pvec), 1, i);
491  deleted++;
492  DBG0("vec_del_collision_rule deleting one at index %d", i);
493  }
494  else
495  {
496  i++;
497  }
498  }
499  ASSERT(deleted > 0);
500 }
501 
502 static void
504 
505 static void
507  u32 head_index, u32 applied_entry_index)
508 {
509  DBG0("DEL COLLIDING RULE: head_index %d applied index %d", head_index, applied_entry_index);
510 
511 
512  applied_hash_ace_entry_t *head_pae =
513  vec_elt_at_index ((*applied_hash_aces), head_index);
514  if (ACL_HASH_LOOKUP_DEBUG > 0)
515  acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae);
516  vec_del_collision_rule (&head_pae->colliding_rules, applied_entry_index);
517  if (vec_len(head_pae->colliding_rules) == 0) {
518  vec_free(head_pae->colliding_rules);
519  }
520  if (ACL_HASH_LOOKUP_DEBUG > 0)
521  acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae);
522 }
523 
524 static void
526  applied_hash_ace_entry_t ** applied_hash_aces,
527  u32 head_index, u32 applied_entry_index)
528 {
529  applied_hash_ace_entry_t *head_pae =
530  vec_elt_at_index ((*applied_hash_aces), head_index);
532  vec_elt_at_index ((*applied_hash_aces), applied_entry_index);
533  DBG0("ADD COLLIDING RULE: head_index %d applied index %d", head_index, applied_entry_index);
534  if (ACL_HASH_LOOKUP_DEBUG > 0)
535  acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae);
536 
538 
539  cr.acl_index = pae->acl_index;
540  cr.ace_index = pae->ace_index;
541  cr.acl_position = pae->acl_position;
542  cr.applied_entry_index = applied_entry_index;
543  cr.rule = am->acls[pae->acl_index].rules[pae->ace_index];
544  vec_add1 (head_pae->colliding_rules, cr);
545  if (ACL_HASH_LOOKUP_DEBUG > 0)
546  acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae);
547 }
548 
549 static u32
551  u32 lc_index,
552  applied_hash_ace_entry_t **applied_hash_aces,
553  u32 new_index)
554 {
556  ASSERT(new_index != ~0);
557  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), new_index);
558  DBG("activate_applied_ace_hash_entry lc_index %d new_index %d", lc_index, new_index);
559 
560  fill_applied_hash_ace_kv(am, applied_hash_aces, lc_index, new_index, &kv);
561 
562  DBG("APPLY ADD KY: %016llx %016llx %016llx %016llx %016llx %016llx",
563  kv.key[0], kv.key[1], kv.key[2],
564  kv.key[3], kv.key[4], kv.key[5]);
565 
566  clib_bihash_kv_48_8_t result;
567  hash_acl_lookup_value_t *result_val = (hash_acl_lookup_value_t *)&result.value;
568  int res = BV (clib_bihash_search) (&am->acl_lookup_hash, &kv, &result);
569  ASSERT(new_index != ~0);
570  ASSERT(new_index < vec_len((*applied_hash_aces)));
571  if (res == 0) {
572  /* There already exists an entry or more. Append at the end. */
573  u32 first_index = result_val->applied_entry_index;
574  ASSERT(first_index != ~0);
575  DBG("A key already exists, with applied entry index: %d", first_index);
576  applied_hash_ace_entry_t *first_pae = vec_elt_at_index((*applied_hash_aces), first_index);
577  u32 last_index = first_pae->tail_applied_entry_index;
578  ASSERT(last_index != ~0);
579  applied_hash_ace_entry_t *last_pae = vec_elt_at_index((*applied_hash_aces), last_index);
580  DBG("...advance to chained entry index: %d", last_index);
581  /* link ourselves in */
582  last_pae->next_applied_entry_index = new_index;
583  pae->prev_applied_entry_index = last_index;
584  /* adjust the pointer to the new tail */
585  first_pae->tail_applied_entry_index = new_index;
586  add_colliding_rule(am, applied_hash_aces, first_index, new_index);
587  return first_index;
588  } else {
589  /* It's the very first entry */
590  hashtable_add_del(am, &kv, 1);
591  ASSERT(new_index != ~0);
592  pae->tail_applied_entry_index = new_index;
593  add_colliding_rule(am, applied_hash_aces, new_index, new_index);
594  return new_index;
595  }
596 }
597 
598 
599 static void *
601 {
602  if (0 == am->hash_lookup_mheap) {
603  am->hash_lookup_mheap = mheap_alloc_with_lock (0 /* use VM */ ,
605  1 /* locked */);
606  if (0 == am->hash_lookup_mheap) {
607  clib_error("ACL plugin failed to allocate lookup heap of %U bytes",
609  }
610 #if USE_DLMALLOC != 0
611  /*
612  * DLMALLOC is being "helpful" in that it ignores the heap size parameter
613  * by default and tries to allocate the larger amount of memory.
614  *
615  * Pin the heap so this does not happen and if we run out of memory
616  * in this heap, we will bail out with "out of memory", rather than
617  * an obscure error sometime later.
618  */
620 #endif
621  }
622  void *oldheap = clib_mem_set_heap(am->hash_lookup_mheap);
623  return oldheap;
624 }
625 
626 void
628 {
629  acl_main_t *am = &acl_main;
631 #if USE_DLMALLOC == 0
633  if (on) {
636  mheap_validate(h);
637  } else {
638  h->flags &= ~MHEAP_FLAG_VALIDATE;
640  }
641 #endif
642 }
643 
644 void
646 {
647  acl_main_t *am = &acl_main;
649 #if USE_DLMALLOC == 0
651  if (on) {
652  h->flags |= MHEAP_FLAG_TRACE;
653  } else {
654  h->flags &= ~MHEAP_FLAG_TRACE;
655  }
656 #endif
657 }
658 
659 static void
661 {
664 
666  fa_5tuple_t mask;
667  /*
668  * Start taking base_mask associated to ace, and essentially copy it.
669  * With TupleMerge we will assign a relaxed mask here.
670  */
672  mask = mte->mask;
673  if (am->use_tuple_merge)
674  pae->mask_type_index = tm_assign_mask_type_index(am, &mask, is_ip6, lc_index);
675  else
676  pae->mask_type_index = assign_mask_type_index(am, &mask);
677 }
678 
679 static void
680 split_partition(acl_main_t *am, u32 first_index,
681  u32 lc_index, int is_ip6);
682 
683 
684 static void
685 check_collision_count_and_maybe_split(acl_main_t *am, u32 lc_index, int is_ip6, u32 first_index)
686 {
687  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
688  applied_hash_ace_entry_t *first_pae = vec_elt_at_index((*applied_hash_aces), first_index);
689  if (vec_len(first_pae->colliding_rules) > am->tuple_merge_split_threshold) {
690  split_partition(am, first_index, lc_index, is_ip6);
691  }
692 }
693 
694 void
695 hash_acl_apply(acl_main_t *am, u32 lc_index, int acl_index, u32 acl_position)
696 {
697  int i;
698 
699  DBG0("HASH ACL apply: lc_index %d acl %d", lc_index, acl_index);
700  if (!am->acl_lookup_hash_initialized) {
701  BV (clib_bihash_init) (&am->acl_lookup_hash, "ACL plugin rule lookup bihash",
704  }
705 
706  void *oldheap = hash_acl_set_heap(am);
708  vec_validate(am->hash_acl_infos, acl_index);
709  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
710 
711  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
712  u32 **hash_acl_applied_lc_index = &ha->lc_index_list;
713 
714  int base_offset = vec_len(*applied_hash_aces);
715 
716  /* Update the bitmap of the mask types with which the lookup
717  needs to happen for the ACLs applied to this lc_index */
719  vec_validate((*applied_hash_acls), lc_index);
720  applied_hash_acl_info_t *pal = vec_elt_at_index((*applied_hash_acls), lc_index);
721 
722  /* ensure the list of applied hash acls is initialized and add this acl# to it */
723  u32 index = vec_search(pal->applied_acls, acl_index);
724  if (index != ~0) {
725  clib_warning("BUG: trying to apply twice acl_index %d on lc_index %d, according to lc",
726  acl_index, lc_index);
727  goto done;
728  }
729  vec_add1(pal->applied_acls, acl_index);
730  u32 index2 = vec_search((*hash_acl_applied_lc_index), lc_index);
731  if (index2 != ~0) {
732  clib_warning("BUG: trying to apply twice acl_index %d on lc_index %d, according to hash h-acl info",
733  acl_index, lc_index);
734  goto done;
735  }
736  vec_add1((*hash_acl_applied_lc_index), lc_index);
737 
738  /*
739  * if the applied ACL is empty, the current code will cause a
740  * different behavior compared to current linear search: an empty ACL will
741  * simply fallthrough to the next ACL, or the default deny in the end.
742  *
743  * This is not a problem, because after vpp-dev discussion,
744  * the consensus was it should not be possible to apply the non-existent
745  * ACL, so the change adding this code also takes care of that.
746  */
747 
748 
750 
751  /* since we know (in case of no split) how much we expand, preallocate that space */
752  if (vec_len(ha->rules) > 0) {
753  int old_vec_len = vec_len(*applied_hash_aces);
754  vec_validate((*applied_hash_aces), old_vec_len + vec_len(ha->rules) - 1);
755  _vec_len((*applied_hash_aces)) = old_vec_len;
756  }
757 
758  /* add the rules from the ACL to the hash table for lookup and append to the vector*/
759  for(i=0; i < vec_len(ha->rules); i++) {
760  /*
761  * Expand the applied aces vector to fit a new entry.
762  * One by one not to upset split_partition() if it is called.
763  */
764  vec_resize((*applied_hash_aces), 1);
765 
766  int is_ip6 = ha->rules[i].match.pkt.is_ip6;
767  u32 new_index = base_offset + i;
768  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), new_index);
769  pae->acl_index = acl_index;
770  pae->ace_index = ha->rules[i].ace_index;
771  pae->acl_position = acl_position;
772  pae->action = ha->rules[i].action;
773  pae->hitcount = 0;
774  pae->hash_ace_info_index = i;
775  /* we might link it in later */
776  pae->next_applied_entry_index = ~0;
777  pae->prev_applied_entry_index = ~0;
778  pae->tail_applied_entry_index = ~0;
779  pae->colliding_rules = NULL;
780  pae->mask_type_index = ~0;
781  assign_mask_type_index_to_pae(am, lc_index, is_ip6, pae);
782  u32 first_index = activate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, new_index);
783  if (am->use_tuple_merge)
784  check_collision_count_and_maybe_split(am, lc_index, is_ip6, first_index);
785  }
786  remake_hash_applied_mask_info_vec(am, applied_hash_aces, lc_index);
787 done:
788  clib_mem_set_heap (oldheap);
789 }
790 
791 static u32
793 {
794  /*
795  * find back the first entry. Inefficient so might need to be a bit cleverer
796  * if this proves to be a problem..
797  */
798  u32 an_index = curr_index;
799  ASSERT(an_index != ~0);
800  applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), an_index);
801  while(head_pae->prev_applied_entry_index != ~0) {
802  an_index = head_pae->prev_applied_entry_index;
803  ASSERT(an_index != ~0);
804  head_pae = vec_elt_at_index((*applied_hash_aces), an_index);
805  }
806  return an_index;
807 }
808 
809 static void
811  u32 lc_index,
812  applied_hash_ace_entry_t **applied_hash_aces,
813  u32 old_index, u32 new_index)
814 {
815  ASSERT(old_index != ~0);
816  ASSERT(new_index != ~0);
817  /* move the entry */
818  *vec_elt_at_index((*applied_hash_aces), new_index) = *vec_elt_at_index((*applied_hash_aces), old_index);
819 
820  /* update the linkage and hash table if necessary */
821  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), old_index);
822  applied_hash_ace_entry_t *new_pae = vec_elt_at_index((*applied_hash_aces), new_index);
823 
824  if (ACL_HASH_LOOKUP_DEBUG > 0) {
825  clib_warning("Moving pae from %d to %d", old_index, new_index);
826  acl_plugin_print_pae(am->vlib_main, old_index, pae);
827  }
828 
829  if (new_pae->tail_applied_entry_index == old_index) {
830  /* fix-up the tail index if we are the tail and the start */
831  new_pae->tail_applied_entry_index = new_index;
832  }
833 
834  if (pae->prev_applied_entry_index != ~0) {
835  applied_hash_ace_entry_t *prev_pae = vec_elt_at_index((*applied_hash_aces), pae->prev_applied_entry_index);
836  ASSERT(prev_pae->next_applied_entry_index == old_index);
837  prev_pae->next_applied_entry_index = new_index;
838  } else {
839  /* first entry - so the hash points to it, update */
840  add_del_hashtable_entry(am, lc_index,
841  applied_hash_aces, new_index, 1);
842  ASSERT(pae->tail_applied_entry_index != ~0);
843  }
844  if (pae->next_applied_entry_index != ~0) {
845  applied_hash_ace_entry_t *next_pae = vec_elt_at_index((*applied_hash_aces), pae->next_applied_entry_index);
846  ASSERT(next_pae->prev_applied_entry_index == old_index);
847  next_pae->prev_applied_entry_index = new_index;
848  } else {
849  /*
850  * Moving the very last entry, so we need to update the tail pointer in the first one.
851  */
852  u32 head_index = find_head_applied_ace_index(applied_hash_aces, old_index);
853  ASSERT(head_index != ~0);
854  applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), head_index);
855 
856  ASSERT(head_pae->tail_applied_entry_index == old_index);
857  head_pae->tail_applied_entry_index = new_index;
858  }
859  if (new_pae->colliding_rules) {
860  /* update the information within the collision rule entry */
861  ASSERT(vec_len(new_pae->colliding_rules) > 0);
863  ASSERT(cr->applied_entry_index == old_index);
864  cr->applied_entry_index = new_index;
865  } else {
866  /* find the index in the collision rule entry on the head element */
867  u32 head_index = find_head_applied_ace_index(applied_hash_aces, new_index);
868  ASSERT(head_index != ~0);
869  applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), head_index);
870  ASSERT(vec_len(head_pae->colliding_rules) > 0);
871  u32 i;
872  for (i=0; i<vec_len(head_pae->colliding_rules); i++) {
874  if (cr->applied_entry_index == old_index) {
875  cr->applied_entry_index = new_index;
876  }
877  }
878  if (ACL_HASH_LOOKUP_DEBUG > 0) {
879  clib_warning("Head pae at index %d after adjustment", head_index);
880  acl_plugin_print_pae(am->vlib_main, head_index, head_pae);
881  }
882  }
883  /* invalidate the old entry */
884  pae->prev_applied_entry_index = ~0;
885  pae->next_applied_entry_index = ~0;
886  pae->tail_applied_entry_index = ~0;
887  pae->colliding_rules = NULL;
888 }
889 
890 static void
892  u32 lc_index,
893  applied_hash_ace_entry_t **applied_hash_aces,
894  u32 old_index)
895 {
896  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), old_index);
897  DBG("UNAPPLY DEACTIVATE: lc_index %d applied index %d", lc_index, old_index);
898  if (ACL_HASH_LOOKUP_DEBUG > 0) {
899  clib_warning("Deactivating pae at index %d", old_index);
900  acl_plugin_print_pae(am->vlib_main, old_index, pae);
901  }
902 
903  if (pae->prev_applied_entry_index != ~0) {
904  DBG("UNAPPLY = index %d has prev_applied_entry_index %d", old_index, pae->prev_applied_entry_index);
905  applied_hash_ace_entry_t *prev_pae = vec_elt_at_index((*applied_hash_aces), pae->prev_applied_entry_index);
906  ASSERT(prev_pae->next_applied_entry_index == old_index);
908 
909  u32 head_index = find_head_applied_ace_index(applied_hash_aces, old_index);
910  ASSERT(head_index != ~0);
911  applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), head_index);
912  del_colliding_rule(applied_hash_aces, head_index, old_index);
913 
914  if (pae->next_applied_entry_index == ~0) {
915  /* it was a last entry we removed, update the pointer on the first one */
916  ASSERT(head_pae->tail_applied_entry_index == old_index);
918  } else {
919  applied_hash_ace_entry_t *next_pae = vec_elt_at_index((*applied_hash_aces), pae->next_applied_entry_index);
921  }
922  } else {
923  /* It was the first entry. We need either to reset the hash entry or delete it */
924  /* delete our entry from the collision vector first */
925  del_colliding_rule(applied_hash_aces, old_index, old_index);
926  if (pae->next_applied_entry_index != ~0) {
927  /* the next element becomes the new first one, so needs the tail pointer to be set */
928  applied_hash_ace_entry_t *next_pae = vec_elt_at_index((*applied_hash_aces), pae->next_applied_entry_index);
929  ASSERT(pae->tail_applied_entry_index != ~0);
931  /* Remove ourselves and transfer the ownership of the colliding rules vector */
932  next_pae->colliding_rules = pae->colliding_rules;
933  /* unlink from the next element */
934  next_pae->prev_applied_entry_index = ~0;
935  add_del_hashtable_entry(am, lc_index,
936  applied_hash_aces, pae->next_applied_entry_index, 1);
937  } else {
938  /* no next entry, so just delete the entry in the hash table */
939  add_del_hashtable_entry(am, lc_index,
940  applied_hash_aces, old_index, 0);
941  }
942  }
943  DBG0("Releasing mask type index %d for pae index %d on lc_index %d", pae->mask_type_index, old_index, lc_index);
945  /* invalidate the old entry */
946  pae->mask_type_index = ~0;
947  pae->prev_applied_entry_index = ~0;
948  pae->next_applied_entry_index = ~0;
949  pae->tail_applied_entry_index = ~0;
950  /* always has to be 0 */
951  pae->colliding_rules = NULL;
952 }
953 
954 
955 void
957 {
958  int i;
959 
960  DBG0("HASH ACL unapply: lc_index %d acl %d", lc_index, acl_index);
962  applied_hash_acl_info_t *pal = vec_elt_at_index((*applied_hash_acls), lc_index);
963 
964  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
965  u32 **hash_acl_applied_lc_index = &ha->lc_index_list;
966 
967  if (ACL_HASH_LOOKUP_DEBUG > 0) {
968  clib_warning("unapplying acl %d", acl_index);
972  }
973 
974  /* remove this acl# from the list of applied hash acls */
975  u32 index = vec_search(pal->applied_acls, acl_index);
976  if (index == ~0) {
977  clib_warning("BUG: trying to unapply unapplied acl_index %d on lc_index %d, according to lc",
978  acl_index, lc_index);
979  return;
980  }
981  vec_del1(pal->applied_acls, index);
982 
983  u32 index2 = vec_search((*hash_acl_applied_lc_index), lc_index);
984  if (index2 == ~0) {
985  clib_warning("BUG: trying to unapply twice acl_index %d on lc_index %d, according to h-acl info",
986  acl_index, lc_index);
987  return;
988  }
989  vec_del1((*hash_acl_applied_lc_index), index2);
990 
991  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
992 
993  for(i=0; i < vec_len((*applied_hash_aces)); i++) {
994  if (vec_elt_at_index(*applied_hash_aces,i)->acl_index == acl_index) {
995  DBG("Found applied ACL#%d at applied index %d", acl_index, i);
996  break;
997  }
998  }
999  if (vec_len((*applied_hash_aces)) <= i) {
1000  DBG("Did not find applied ACL#%d at lc_index %d", acl_index, lc_index);
1001  /* we went all the way without finding any entries. Probably a list was empty. */
1002  return;
1003  }
1004 
1005  void *oldheap = hash_acl_set_heap(am);
1006  int base_offset = i;
1007  int tail_offset = base_offset + vec_len(ha->rules);
1008  int tail_len = vec_len((*applied_hash_aces)) - tail_offset;
1009  DBG("base_offset: %d, tail_offset: %d, tail_len: %d", base_offset, tail_offset, tail_len);
1010 
1011  for(i=0; i < vec_len(ha->rules); i ++) {
1012  deactivate_applied_ace_hash_entry(am, lc_index,
1013  applied_hash_aces, base_offset + i);
1014  }
1015  for(i=0; i < tail_len; i ++) {
1016  /* move the entry at tail offset to base offset */
1017  /* that is, from (tail_offset+i) -> (base_offset+i) */
1018  DBG0("UNAPPLY MOVE: lc_index %d, applied index %d -> %d", lc_index, tail_offset+i, base_offset + i);
1019  move_applied_ace_hash_entry(am, lc_index, applied_hash_aces, tail_offset + i, base_offset + i);
1020  }
1021  /* trim the end of the vector */
1022  _vec_len((*applied_hash_aces)) -= vec_len(ha->rules);
1023 
1024  remake_hash_applied_mask_info_vec(am, applied_hash_aces, lc_index);
1025 
1026  if (vec_len((*applied_hash_aces)) == 0) {
1027  vec_free((*applied_hash_aces));
1028  }
1029 
1030  clib_mem_set_heap (oldheap);
1031 }
1032 
1033 /*
1034  * Create the applied ACEs and update the hash table,
1035  * taking into account that the ACL may not be the last
1036  * in the vector of applied ACLs.
1037  *
1038  * For now, walk from the end of the vector and unapply the ACLs,
1039  * then apply the one in question and reapply the rest.
1040  */
1041 
1042 void
1044 {
1045  acl_lookup_context_t *acontext = pool_elt_at_index(am->acl_lookup_contexts, lc_index);
1046  u32 **applied_acls = &acontext->acl_indices;
1047  int i;
1048  int start_index = vec_search((*applied_acls), acl_index);
1049 
1050  DBG0("Start index for acl %d in lc_index %d is %d", acl_index, lc_index, start_index);
1051  /*
1052  * This function is called after we find out the lc_index where ACL is applied.
1053  * If the by-lc_index vector does not have the ACL#, then it's a bug.
1054  */
1055  ASSERT(start_index < vec_len(*applied_acls));
1056 
1057  /* unapply all the ACLs at the tail side, up to the current one */
1058  for(i = vec_len(*applied_acls) - 1; i > start_index; i--) {
1059  hash_acl_unapply(am, lc_index, *vec_elt_at_index(*applied_acls, i));
1060  }
1061  for(i = start_index; i < vec_len(*applied_acls); i++) {
1062  hash_acl_apply(am, lc_index, *vec_elt_at_index(*applied_acls, i), i);
1063  }
1064 }
1065 
1066 static void
1068 {
1069  ip6_address_mask_from_width(addr, prefix_len);
1070 }
1071 
1072 
1073 /* Maybe should be moved into the core somewhere */
1074 always_inline void
1076 {
1077  int i, byte, bit, bitnum;
1078  ASSERT (width <= 32);
1079  clib_memset (a, 0, sizeof (a[0]));
1080  for (i = 0; i < width; i++)
1081  {
1082  bitnum = (7 - (i & 7));
1083  byte = i / 8;
1084  bit = 1 << bitnum;
1085  a->as_u8[byte] |= bit;
1086  }
1087 }
1088 
1089 
1090 static void
1092 {
1093  ip4_address_mask_from_width(addr, prefix_len);
1094 }
1095 
1096 static void
1097 make_port_mask(u16 *portmask, u16 port_first, u16 port_last)
1098 {
1099  if (port_first == port_last) {
1100  *portmask = 0xffff;
1101  /* single port is representable by masked value */
1102  return;
1103  }
1104 
1105  *portmask = 0;
1106  return;
1107 }
1108 
1109 static void
1111 {
1112  clib_memset(mask, 0, sizeof(*mask));
1113  clib_memset(&hi->match, 0, sizeof(hi->match));
1114  hi->action = r->is_permit;
1115 
1116  /* we will need to be matching based on lc_index and mask_type_index when applied */
1117  mask->pkt.lc_index = ~0;
1118  /* we will assign the match of mask_type_index later when we find it*/
1119  mask->pkt.mask_type_index_lsb = ~0;
1120 
1121  mask->pkt.is_ip6 = 1;
1122  hi->match.pkt.is_ip6 = r->is_ipv6;
1123  if (r->is_ipv6) {
1125  hi->match.ip6_addr[0] = r->src.ip6;
1127  hi->match.ip6_addr[1] = r->dst.ip6;
1128  } else {
1129  clib_memset(hi->match.l3_zero_pad, 0, sizeof(hi->match.l3_zero_pad));
1131  hi->match.ip4_addr[0] = r->src.ip4;
1133  hi->match.ip4_addr[1] = r->dst.ip4;
1134  }
1135 
1136  if (r->proto != 0) {
1137  mask->l4.proto = ~0; /* L4 proto needs to be matched */
1138  hi->match.l4.proto = r->proto;
1139 
1140  /* Calculate the src/dst port masks and make the src/dst port matches accordingly */
1142  hi->match.l4.port[0] = r->src_port_or_type_first & mask->l4.port[0];
1143 
1145  hi->match.l4.port[1] = r->dst_port_or_code_first & mask->l4.port[1];
1146  /* L4 info must be valid in order to match */
1147  mask->pkt.l4_valid = 1;
1148  hi->match.pkt.l4_valid = 1;
1149  /* And we must set the mask to check that it is an initial fragment */
1150  mask->pkt.is_nonfirst_fragment = 1;
1151  hi->match.pkt.is_nonfirst_fragment = 0;
1152  if ((r->proto == IPPROTO_TCP) && (r->tcp_flags_mask != 0)) {
1153  /* if we want to match on TCP flags, they must be masked off as well */
1154  mask->pkt.tcp_flags = r->tcp_flags_mask;
1156  /* and the flags need to be present within the packet being matched */
1157  mask->pkt.tcp_flags_valid = 1;
1158  hi->match.pkt.tcp_flags_valid = 1;
1159  }
1160  }
1161  /* Sanitize the mask and the match */
1162  u64 *pmask = (u64 *)mask;
1163  u64 *pmatch = (u64 *)&hi->match;
1164  int j;
1165  for(j=0; j<6; j++) {
1166  pmatch[j] = pmatch[j] & pmask[j];
1167  }
1168 }
1169 
1170 
1172 {
1173  if (acl_index >= vec_len(am->hash_acl_infos))
1174  return 0;
1175 
1176  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1177  return ha->hash_acl_exists;
1178 }
1179 
1181 {
1182  void *oldheap = hash_acl_set_heap(am);
1183  DBG("HASH ACL add : %d", acl_index);
1184  int i;
1185  acl_list_t *a = &am->acls[acl_index];
1186  vec_validate(am->hash_acl_infos, acl_index);
1187  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1188  clib_memset(ha, 0, sizeof(*ha));
1189  ha->hash_acl_exists = 1;
1190 
1191  /* walk the newly added ACL entries and ensure that for each of them there
1192  is a mask type, increment a reference count for that mask type */
1193 
1194  /* avoid small requests by preallocating the entire vector before running the additions */
1195  if (a->count > 0) {
1196  vec_validate(ha->rules, a->count-1);
1197  vec_reset_length(ha->rules);
1198  }
1199 
1200  for(i=0; i < a->count; i++) {
1201  hash_ace_info_t ace_info;
1202  fa_5tuple_t mask;
1203  clib_memset(&ace_info, 0, sizeof(ace_info));
1204  ace_info.acl_index = acl_index;
1205  ace_info.ace_index = i;
1206 
1207  make_mask_and_match_from_rule(&mask, &a->rules[i], &ace_info);
1208  mask.pkt.flags_reserved = 0b000;
1209  ace_info.base_mask_type_index = assign_mask_type_index(am, &mask);
1210  /* assign the mask type index for matching itself */
1211  ace_info.match.pkt.mask_type_index_lsb = ace_info.base_mask_type_index;
1212  DBG("ACE: %d mask_type_index: %d", i, ace_info.base_mask_type_index);
1213  vec_add1(ha->rules, ace_info);
1214  }
1215  /*
1216  * if an ACL is applied somewhere, fill the corresponding lookup data structures.
1217  * We need to take care if the ACL is not the last one in the vector of ACLs applied to the interface.
1218  */
1219  if (acl_index < vec_len(am->lc_index_vec_by_acl)) {
1220  u32 *lc_index;
1221  vec_foreach(lc_index, am->lc_index_vec_by_acl[acl_index]) {
1222  hash_acl_reapply(am, *lc_index, acl_index);
1223  }
1224  }
1225  clib_mem_set_heap (oldheap);
1226 }
1227 
1229 {
1230  void *oldheap = hash_acl_set_heap(am);
1231  DBG0("HASH ACL delete : %d", acl_index);
1232  /*
1233  * If the ACL is applied somewhere, remove the references of it (call hash_acl_unapply)
1234  * this is a different behavior from the linear lookup where an empty ACL is "deny all",
1235  *
1236  * However, following vpp-dev discussion the ACL that is referenced elsewhere
1237  * should not be possible to delete, and the change adding this also adds
1238  * the safeguards to that respect, so this is not a problem.
1239  *
1240  * The part to remember is that this routine is called in process of reapplication
1241  * during the acl_add_replace() API call - the old acl ruleset is deleted, then
1242  * the new one is added, without the change in the applied ACLs - so this case
1243  * has to be handled.
1244  */
1245  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1246  u32 *lc_list_copy = 0;
1247  {
1248  u32 *lc_index;
1249  lc_list_copy = vec_dup(ha->lc_index_list);
1250  vec_foreach(lc_index, lc_list_copy) {
1251  hash_acl_unapply(am, *lc_index, acl_index);
1252  }
1253  vec_free(lc_list_copy);
1254  }
1255  vec_free(ha->lc_index_list);
1256 
1257  /* walk the mask types for the ACL about-to-be-deleted, and decrease
1258  * the reference count, possibly freeing up some of them */
1259  int i;
1260  for(i=0; i < vec_len(ha->rules); i++) {
1262  }
1263  ha->hash_acl_exists = 0;
1264  vec_free(ha->rules);
1265  clib_mem_set_heap (oldheap);
1266 }
1267 
1268 
1269 void
1271 {
1272  vlib_cli_output(vm, "\nACL lookup hash table:\n%U\n",
1273  BV (format_bihash), &am->acl_lookup_hash, verbose);
1274 }
1275 
1276 void
1278 {
1279  acl_main_t *am = &acl_main;
1280  vlib_main_t *vm = am->vlib_main;
1281  ace_mask_type_entry_t *mte;
1282 
1283  vlib_cli_output (vm, "Mask-type entries:");
1284  /* *INDENT-OFF* */
1286  ({
1287  vlib_cli_output(vm, " %3d: %016llx %016llx %016llx %016llx %016llx %016llx refcount %d",
1288  mte - am->ace_mask_type_pool,
1289  mte->mask.kv_40_8.key[0], mte->mask.kv_40_8.key[1], mte->mask.kv_40_8.key[2],
1290  mte->mask.kv_40_8.key[3], mte->mask.kv_40_8.key[4], mte->mask.kv_40_8.value, mte->refcount);
1291  }));
1292  /* *INDENT-ON* */
1293 }
1294 
1295 void
1297 {
1298  acl_main_t *am = &acl_main;
1299  vlib_main_t *vm = am->vlib_main;
1300  u32 i, j;
1301  u64 *m;
1302  vlib_cli_output (vm, "Mask-ready ACL representations\n");
1303  for (i = 0; i < vec_len (am->hash_acl_infos); i++)
1304  {
1305  if ((acl_index != ~0) && (acl_index != i))
1306  {
1307  continue;
1308  }
1309  hash_acl_info_t *ha = &am->hash_acl_infos[i];
1310  vlib_cli_output (vm, "acl-index %u bitmask-ready layout\n", i);
1311  vlib_cli_output (vm, " applied lc_index list: %U\n",
1312  format_vec32, ha->lc_index_list, "%d");
1313  for (j = 0; j < vec_len (ha->rules); j++)
1314  {
1315  hash_ace_info_t *pa = &ha->rules[j];
1316  m = (u64 *) & pa->match;
1317  vlib_cli_output (vm,
1318  " %4d: %016llx %016llx %016llx %016llx %016llx %016llx base mask index %d acl %d rule %d action %d\n",
1319  j, m[0], m[1], m[2], m[3], m[4], m[5],
1321  pa->action);
1322  }
1323  }
1324 }
1325 
1326 static void
1328  vlib_cli_output(vm,
1329  " %4d: acl %d ace %d acl pos %d pae index: %d",
1330  j, cr->acl_index, cr->ace_index, cr->acl_position, cr->applied_entry_index);
1331 }
1332 
1333 static void
1335 {
1336  vlib_cli_output (vm,
1337  " %4d: acl %d rule %d action %d bitmask-ready rule %d mask type index: %d colliding_rules: %d next %d prev %d tail %d hitcount %lld acl_pos: %d",
1338  j, pae->acl_index, pae->ace_index, pae->action,
1342  int jj;
1343  for(jj=0; jj<vec_len(pae->colliding_rules); jj++)
1345 }
1346 
1347 static void
1349 {
1350  vlib_cli_output (vm,
1351  " %4d: mask type index %d first rule index %d num_entries %d max_collisions %d",
1353 }
1354 
1355 void
1357 {
1358  acl_main_t *am = &acl_main;
1359  vlib_main_t *vm = am->vlib_main;
1360  u32 lci, j;
1361  vlib_cli_output (vm, "Applied lookup entries for lookup contexts");
1362 
1363  for (lci = 0;
1364  (lci < vec_len(am->applied_hash_acl_info_by_lc_index)); lci++)
1365  {
1366  if ((lc_index != ~0) && (lc_index != lci))
1367  {
1368  continue;
1369  }
1370  vlib_cli_output (vm, "lc_index %d:", lci);
1372  {
1375  vlib_cli_output (vm, " applied acls: %U", format_vec32,
1376  pal->applied_acls, "%d");
1377  }
1379  {
1380  vlib_cli_output (vm, " applied mask info entries:");
1381  for (j = 0;
1383  j++)
1384  {
1387  [lci][j]);
1388  }
1389  }
1390  if (lci < vec_len (am->hash_entry_vec_by_lc_index))
1391  {
1392  vlib_cli_output (vm, " lookup applied entries:");
1393  for (j = 0;
1394  j < vec_len (am->hash_entry_vec_by_lc_index[lci]);
1395  j++)
1396  {
1397  acl_plugin_print_pae (vm, j,
1399  [lci][j]);
1400  }
1401  }
1402  }
1403 }
1404 
1405 void
1406 acl_plugin_show_tables_bihash (u32 show_bihash_verbose)
1407 {
1408  acl_main_t *am = &acl_main;
1409  vlib_main_t *vm = am->vlib_main;
1410  show_hash_acl_hash (vm, am, show_bihash_verbose);
1411 }
1412 
1413 /*
1414  * Split of the partition needs to happen when the collision count
1415  * goes over a specified threshold.
1416  *
1417  * This is a signal that we ignored too many bits in
1418  * mT and we need to split the table into two tables. We select
1419  * all of the colliding rules L and find their maximum common
1420  * tuple mL. Normally mL is specific enough to hash L with few
1421  * or no collisions. We then create a new table T2 with tuple mL
1422  * and transfer all compatible rules from T to T2. If mL is not
1423  * specific enough, we find the field with the biggest difference
1424  * between the minimum and maximum tuple lengths for all of
1425  * the rules in L and set that field to be the average of those two
1426  * values. We then transfer all compatible rules as before. This
1427  * guarantees that some rules from L will move and that T2 will
1428  * have a smaller number of collisions than T did.
1429  */
1430 
1431 
1432 static void
1434 {
1435  int update =
1436  (clib_net_to_host_u64 (mask_addr->as_u64[0]) <
1437  clib_net_to_host_u64 (min_addr->as_u64[0]))
1438  ||
1439  ((clib_net_to_host_u64 (mask_addr->as_u64[0]) ==
1440  clib_net_to_host_u64 (min_addr->as_u64[0]))
1441  && (clib_net_to_host_u64 (mask_addr->as_u64[1]) <
1442  clib_net_to_host_u64 (min_addr->as_u64[1])));
1443  if (update)
1444  {
1445  min_addr->as_u64[0] = mask_addr->as_u64[0];
1446  min_addr->as_u64[1] = mask_addr->as_u64[1];
1447  }
1448 }
1449 
1450 static void
1452 {
1453  int update =
1454  (clib_net_to_host_u64 (mask_addr->as_u64[0]) >
1455  clib_net_to_host_u64 (max_addr->as_u64[0]))
1456  ||
1457  ((clib_net_to_host_u64 (mask_addr->as_u64[0]) ==
1458  clib_net_to_host_u64 (max_addr->as_u64[0]))
1459  && (clib_net_to_host_u64 (mask_addr->as_u64[1]) >
1460  clib_net_to_host_u64 (max_addr->as_u64[1])));
1461  if (update)
1462  {
1463  max_addr->as_u64[0] = mask_addr->as_u64[0];
1464  max_addr->as_u64[1] = mask_addr->as_u64[1];
1465  }
1466 }
1467 
1468 static void
1470 {
1471  int update =
1472  (clib_net_to_host_u32 (mask_addr->as_u32) <
1473  clib_net_to_host_u32 (min_addr->as_u32));
1474  if (update)
1475  min_addr->as_u32 = mask_addr->as_u32;
1476 }
1477 
1478 static void
1480 {
1481  int update =
1482  (clib_net_to_host_u32 (mask_addr->as_u32) >
1483  clib_net_to_host_u32 (max_addr->as_u32));
1484  if (update)
1485  max_addr->as_u32 = mask_addr->as_u32;
1486 }
1487 
1488 enum {
1494 };
1495 
1496 
1497 
1498 static void
1499 split_partition(acl_main_t *am, u32 first_index,
1500  u32 lc_index, int is_ip6){
1501  DBG( "TM-split_partition - first_entry:%d", first_index);
1502  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
1503  ace_mask_type_entry_t *mte;
1504  fa_5tuple_t the_min_tuple, *min_tuple = &the_min_tuple;
1505  fa_5tuple_t the_max_tuple, *max_tuple = &the_max_tuple;
1506  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), first_index);
1508  hash_ace_info_t *ace_info;
1509  u32 coll_mask_type_index = pae->mask_type_index;
1510  clib_memset(&the_min_tuple, 0, sizeof(the_min_tuple));
1511  clib_memset(&the_max_tuple, 0, sizeof(the_max_tuple));
1512 
1513  int i=0;
1514  collision_match_rule_t *colliding_rules = pae->colliding_rules;
1515  u64 collisions = vec_len(pae->colliding_rules);
1516  for(i=0; i<collisions; i++){
1517  /* reload the hash acl info as it might be a different ACL# */
1518  pae = vec_elt_at_index((*applied_hash_aces), colliding_rules[i].applied_entry_index);
1519  ha = vec_elt_at_index(am->hash_acl_infos, pae->acl_index);
1520 
1521  DBG( "TM-collision: base_ace:%d (ace_mask:%d, first_collision_mask:%d)",
1522  pae->ace_index, pae->mask_type_index, coll_mask_type_index);
1523 
1524  ace_info = vec_elt_at_index(ha->rules, pae->hash_ace_info_index);
1526  fa_5tuple_t *mask = &mte->mask;
1527 
1528  if(pae->mask_type_index != coll_mask_type_index) continue;
1529  /* Computing min_mask and max_mask for colliding rules */
1530  if(i==0){
1531  clib_memcpy_fast(min_tuple, mask, sizeof(fa_5tuple_t));
1532  clib_memcpy_fast(max_tuple, mask, sizeof(fa_5tuple_t));
1533  }else{
1534  int j;
1535  for(j=0; j<2; j++){
1536  if (is_ip6)
1537  ensure_ip6_min_addr(&min_tuple->ip6_addr[j], &mask->ip6_addr[j]);
1538  else
1539  ensure_ip4_min_addr(&min_tuple->ip4_addr[j], &mask->ip4_addr[j]);
1540 
1541  if ((mask->l4.port[j] < min_tuple->l4.port[j]))
1542  min_tuple->l4.port[j] = mask->l4.port[j];
1543  }
1544 
1545  if ((mask->l4.proto < min_tuple->l4.proto))
1546  min_tuple->l4.proto = mask->l4.proto;
1547 
1548  if(mask->pkt.as_u64 < min_tuple->pkt.as_u64)
1549  min_tuple->pkt.as_u64 = mask->pkt.as_u64;
1550 
1551 
1552  for(j=0; j<2; j++){
1553  if (is_ip6)
1554  ensure_ip6_max_addr(&max_tuple->ip6_addr[j], &mask->ip6_addr[j]);
1555  else
1556  ensure_ip4_max_addr(&max_tuple->ip4_addr[j], &mask->ip4_addr[j]);
1557 
1558  if ((mask->l4.port[j] > max_tuple->l4.port[j]))
1559  max_tuple->l4.port[j] = mask->l4.port[j];
1560  }
1561 
1562  if ((mask->l4.proto < max_tuple->l4.proto))
1563  max_tuple->l4.proto = mask->l4.proto;
1564 
1565  if(mask->pkt.as_u64 > max_tuple->pkt.as_u64)
1566  max_tuple->pkt.as_u64 = mask->pkt.as_u64;
1567  }
1568  }
1569 
1570  /* Computing field with max difference between (min/max)_mask */
1571  int best_dim=-1, best_delta=0, delta=0;
1572 
1573  /* SRC_addr dimension */
1574  if (is_ip6) {
1575  int i;
1576  for(i=0; i<2; i++){
1577  delta += count_bits(max_tuple->ip6_addr[0].as_u64[i]) - count_bits(min_tuple->ip6_addr[0].as_u64[i]);
1578  }
1579  } else {
1580  delta += count_bits(max_tuple->ip4_addr[0].as_u32) - count_bits(min_tuple->ip4_addr[0].as_u32);
1581  }
1582  if(delta > best_delta){
1583  best_delta = delta;
1584  best_dim = DIM_SRC_ADDR;
1585  }
1586 
1587  /* DST_addr dimension */
1588  delta = 0;
1589  if (is_ip6) {
1590  int i;
1591  for(i=0; i<2; i++){
1592  delta += count_bits(max_tuple->ip6_addr[1].as_u64[i]) - count_bits(min_tuple->ip6_addr[1].as_u64[i]);
1593  }
1594  } else {
1595  delta += count_bits(max_tuple->ip4_addr[1].as_u32) - count_bits(min_tuple->ip4_addr[1].as_u32);
1596  }
1597  if(delta > best_delta){
1598  best_delta = delta;
1599  best_dim = DIM_DST_ADDR;
1600  }
1601 
1602  /* SRC_port dimension */
1603  delta = count_bits(max_tuple->l4.port[0]) - count_bits(min_tuple->l4.port[0]);
1604  if(delta > best_delta){
1605  best_delta = delta;
1606  best_dim = DIM_SRC_PORT;
1607  }
1608 
1609  /* DST_port dimension */
1610  delta = count_bits(max_tuple->l4.port[1]) - count_bits(min_tuple->l4.port[1]);
1611  if(delta > best_delta){
1612  best_delta = delta;
1613  best_dim = DIM_DST_PORT;
1614  }
1615 
1616  /* Proto dimension */
1617  delta = count_bits(max_tuple->l4.proto) - count_bits(min_tuple->l4.proto);
1618  if(delta > best_delta){
1619  best_delta = delta;
1620  best_dim = DIM_PROTO;
1621  }
1622 
1623  int shifting = 0; //, ipv4_block = 0;
1624  switch(best_dim){
1625  case DIM_SRC_ADDR:
1626  shifting = (best_delta)/2; // FIXME IPV4-only
1627  // ipv4_block = count_bits(max_tuple->ip4_addr[0].as_u32);
1628  min_tuple->ip4_addr[0].as_u32 =
1629  clib_host_to_net_u32((clib_net_to_host_u32(max_tuple->ip4_addr[0].as_u32) << (shifting))&0xFFFFFFFF);
1630 
1631  break;
1632  case DIM_DST_ADDR:
1633  shifting = (best_delta)/2;
1634 /*
1635  ipv4_block = count_bits(max_tuple->addr[1].as_u64[1]);
1636  if(ipv4_block > shifting)
1637  min_tuple->addr[1].as_u64[1] =
1638  clib_host_to_net_u64((clib_net_to_host_u64(max_tuple->addr[1].as_u64[1]) << (shifting))&0xFFFFFFFF);
1639  else{
1640  shifting = shifting - ipv4_block;
1641  min_tuple->addr[1].as_u64[1] = 0;
1642  min_tuple->addr[1].as_u64[0] =
1643  clib_host_to_net_u64((clib_net_to_host_u64(max_tuple->addr[1].as_u64[0]) << (shifting))&0xFFFFFFFF);
1644  }
1645 */
1646  min_tuple->ip4_addr[1].as_u32 =
1647  clib_host_to_net_u32((clib_net_to_host_u32(max_tuple->ip4_addr[1].as_u32) << (shifting))&0xFFFFFFFF);
1648 
1649  break;
1650  case DIM_SRC_PORT: min_tuple->l4.port[0] = max_tuple->l4.port[0] << (best_delta)/2;
1651  break;
1652  case DIM_DST_PORT: min_tuple->l4.port[1] = max_tuple->l4.port[1] << (best_delta)/2;
1653  break;
1654  case DIM_PROTO: min_tuple->l4.proto = max_tuple->l4.proto << (best_delta)/2;
1655  break;
1656  default: relax_tuple(min_tuple, is_ip6, 1);
1657  break;
1658  }
1659 
1660  min_tuple->pkt.is_nonfirst_fragment = 0;
1661  u32 new_mask_type_index = assign_mask_type_index(am, min_tuple);
1662 
1663  hash_applied_mask_info_t **hash_applied_mask_info_vec = vec_elt_at_index(am->hash_applied_mask_info_vec_by_lc_index, lc_index);
1664 
1665  hash_applied_mask_info_t *minfo;
1666  //search in order pool if mask_type_index is already there
1667  int search;
1668  for (search=0; search < vec_len((*hash_applied_mask_info_vec)); search++){
1669  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), search);
1670  if(minfo->mask_type_index == new_mask_type_index)
1671  break;
1672  }
1673 
1674  vec_validate((*hash_applied_mask_info_vec), search);
1675  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), search);
1676  minfo->mask_type_index = new_mask_type_index;
1677  minfo->num_entries = 0;
1678  minfo->max_collisions = 0;
1679  minfo->first_rule_index = ~0;
1680 
1681  DBG( "TM-split_partition - mask type index-assigned!! -> %d", new_mask_type_index);
1682 
1683  if(coll_mask_type_index == new_mask_type_index){
1684  //vlib_cli_output(vm, "TM-There are collisions over threshold, but i'm not able to split! %d %d", coll_mask_type_index, new_mask_type_index);
1685  return;
1686  }
1687 
1688 
1689  /* populate new partition */
1690  DBG( "TM-Populate new partition");
1691  u32 r_ace_index = first_index;
1692  int repopulate_count = 0;
1693 
1694  collision_match_rule_t *temp_colliding_rules = vec_dup(colliding_rules);
1695  collisions = vec_len(temp_colliding_rules);
1696 
1697  for(i=0; i<collisions; i++){
1698 
1699  r_ace_index = temp_colliding_rules[i].applied_entry_index;
1700 
1701  applied_hash_ace_entry_t *pop_pae = vec_elt_at_index((*applied_hash_aces), r_ace_index);
1702  ha = vec_elt_at_index(am->hash_acl_infos, pop_pae->acl_index);
1703  DBG( "TM-Population-collision: base_ace:%d (ace_mask:%d, first_collision_mask:%d)",
1704  pop_pae->ace_index, pop_pae->mask_type_index, coll_mask_type_index);
1705 
1706  ASSERT(pop_pae->mask_type_index == coll_mask_type_index);
1707 
1708  ace_info = vec_elt_at_index(ha->rules, pop_pae->hash_ace_info_index);
1710  //can insert rule?
1711  //mte = vec_elt_at_index(am->ace_mask_type_pool, pop_pae->mask_type_index);
1712  fa_5tuple_t *pop_mask = &mte->mask;
1713 
1714  if(!first_mask_contains_second_mask(is_ip6, min_tuple, pop_mask)) continue;
1715  DBG( "TM-new partition can insert -> applied_ace:%d", r_ace_index);
1716 
1717  //delete and insert in new format
1718  deactivate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, r_ace_index);
1719 
1720  /* insert the new entry */
1721  pop_pae->mask_type_index = new_mask_type_index;
1722  /* The very first repopulation gets the lock by virtue of a new mask being created above */
1723  if (++repopulate_count > 1)
1724  lock_mask_type_index(am, new_mask_type_index);
1725 
1726  activate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, r_ace_index);
1727 
1728  }
1729  vec_free(temp_colliding_rules);
1730 
1731  DBG( "TM-Populate new partition-END");
1732  DBG( "TM-split_partition - END");
1733 
1734 }
1735 
static void move_applied_ace_hash_entry(acl_main_t *am, u32 lc_index, applied_hash_ace_entry_t **applied_hash_aces, u32 old_index, u32 new_index)
Definition: hash_lookup.c:810
acl_rule_t * rules
Definition: acl.h:95
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
static void ensure_ip4_max_addr(ip4_address_t *max_addr, ip4_address_t *mask_addr)
Definition: hash_lookup.c:1479
static void deactivate_applied_ace_hash_entry(acl_main_t *am, u32 lc_index, applied_hash_ace_entry_t **applied_hash_aces, u32 old_index)
Definition: hash_lookup.c:891
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Definition: gbp.api:295
vmrglw vmrglh hi
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void acl_plugin_show_tables_mask_type(void)
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static void ensure_ip6_min_addr(ip6_address_t *min_addr, ip6_address_t *mask_addr)
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Definition: acl.h:119
a
Definition: bitmap.h:538
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Definition: fa_node.h:81
fa_packet_info_t pkt
Definition: fa_node.h:83
void hash_acl_unapply(acl_main_t *am, u32 lc_index, int acl_index)
Definition: hash_lookup.c:956
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Definition: hash_lookup.c:645
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Definition: hash_lookup.c:1356
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Definition: hash_lookup.c:1043
#define clib_error(format, args...)
Definition: error.h:62
u64 as_u64[2]
Definition: ip6_packet.h:51
unsigned long u64
Definition: types.h:89
#define clib_memcpy_fast(a, b, c)
Definition: string.h:81
#define NULL
Definition: clib.h:58
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u8 dst_prefixlen
Definition: types.h:28
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Definition: acl.h:94
static void add_colliding_rule(acl_main_t *am, applied_hash_ace_entry_t **applied_hash_aces, u32 head_index, u32 applied_entry_index)
Definition: hash_lookup.c:525
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:525
int i
static mheap_t * mheap_header(u8 *v)
static u32 activate_applied_ace_hash_entry(acl_main_t *am, u32 lc_index, applied_hash_ace_entry_t **applied_hash_aces, u32 new_index)
Definition: hash_lookup.c:550
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Definition: vhost_user.h:121
unsigned char u8
Definition: types.h:56
#define vec_reset_length(v)
Reset vector length to zero NULL-pointer tolerant.
static u32 find_head_applied_ace_index(applied_hash_ace_entry_t **applied_hash_aces, u32 curr_index)
Definition: hash_lookup.c:792
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Definition: hash_lookup.c:1180
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Definition: acl.h:181
static void ensure_ip6_max_addr(ip6_address_t *max_addr, ip6_address_t *mask_addr)
Definition: hash_lookup.c:1451
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Definition: types.h:33
u8 src_prefixlen
Definition: types.h:26
static void make_port_mask(u16 *portmask, u16 port_first, u16 port_last)
Definition: hash_lookup.c:1097
u32 acl_position
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#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:490
i64 word
Definition: types.h:111
int clib_bihash_add_del(clib_bihash *h, clib_bihash_kv *add_v, int is_add)
Add or delete a (key,value) pair from a bi-hash table.
#define always_inline
Definition: clib.h:98
static void assign_mask_type_index_to_pae(acl_main_t *am, u32 lc_index, int is_ip6, applied_hash_ace_entry_t *pae)
Definition: hash_lookup.c:660
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:311
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Definition: types.h:25
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Definition: std-formats.c:193
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static void lock_mask_type_index(acl_main_t *am, u32 mask_type_index)
Definition: hash_lookup.c:300
u8 is_permit
Definition: types.h:23
#define vec_resize(V, N)
Resize a vector (no header, unspecified alignment) Add N elements to end of given vector V...
Definition: vec.h:242
unsigned int u32
Definition: types.h:88
#define vec_search(v, E)
Search a vector for the index of the entry that matches.
Definition: vec.h:944
static void release_mask_type_index(acl_main_t *am, u32 mask_type_index)
Definition: hash_lookup.c:310
void hash_acl_apply(acl_main_t *am, u32 lc_index, int acl_index, u32 acl_position)
Definition: hash_lookup.c:695
static u32 assign_mask_type_index(acl_main_t *am, fa_5tuple_t *mask)
Definition: hash_lookup.c:276
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Definition: hash_lookup.c:1171
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Definition: types.h:27
static void add_del_hashtable_entry(acl_main_t *am, u32 lc_index, applied_hash_ace_entry_t **applied_hash_aces, u32 index, int is_add)
Definition: hash_lookup.c:412
collision_match_rule_t * colliding_rules
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Returns pointer to element at given index.
Definition: pool.h:511
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Definition: fa_node.h:76
static void ip4_address_mask_from_width(ip4_address_t *a, u32 width)
Definition: hash_lookup.c:1075
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DLMALLOC_EXPORT void mspace_disable_expand(mspace msp)
unsigned short u16
Definition: types.h:57
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Definition: acl.h:142
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
#define vec_dup(V)
Return copy of vector (no header, no alignment)
Definition: vec.h:375
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Definition: hash_lookup.c:1110
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Delete the element at index I.
Definition: vec.h:808
static void check_collision_count_and_maybe_split(acl_main_t *am, u32 lc_index, int is_ip6, u32 first_index)
Definition: hash_lookup.c:685
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Definition: acl.h:143
void show_hash_acl_hash(vlib_main_t *vm, acl_main_t *am, u32 verbose)
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Definition: types.h:29
void clib_bihash_init(clib_bihash *h, char *name, u32 nbuckets, uword memory_size)
initialize a bounded index extensible hash table
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Definition: types.h:30
void acl_plugin_show_tables_bihash(u32 show_bihash_verbose)
Definition: hash_lookup.c:1406
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Allocate an object E from a pool P with alignment A.
Definition: pool.h:230
static void vec_del_collision_rule(collision_match_rule_t **pvec, u32 applied_entry_index)
Definition: hash_lookup.c:479
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Definition: acl.h:124
static void split_partition(acl_main_t *am, u32 first_index, u32 lc_index, int is_ip6)
Definition: hash_lookup.c:1499
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Definition: acl.h:158
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
static void make_ip4_address_mask(ip4_address_t *addr, u8 prefix_len)
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int acl_lookup_hash_initialized
Definition: acl.h:150
static void * clib_mem_set_heap(void *heap)
Definition: mem.h:261
void hash_acl_delete(acl_main_t *am, int acl_index)
Definition: hash_lookup.c:1228
#define clib_warning(format, args...)
Definition: error.h:59
u8 * format_vec32(u8 *s, va_list *va)
Definition: std-formats.c:43
#define DBG(...)
static int count_bits(u64 word)
Definition: hash_lookup.c:71
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Definition: acl.h:157
static u8 first_mask_contains_second_mask(int is_ip6, fa_5tuple_t *mask1, fa_5tuple_t *mask2)
Definition: hash_lookup.c:84
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Definition: acl.h:145
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Definition: acl.h:203
static void relax_ip6_addr(ip6_address_t *ip6_mask, int relax2)
Definition: hash_lookup.c:187
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Definition: hash_lookup.c:1327
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Definition: acl.h:144
#define ASSERT(truth)
static void ensure_ip4_min_addr(ip4_address_t *min_addr, ip4_address_t *mask_addr)
Definition: hash_lookup.c:1469
#define vec_delete(V, N, M)
Delete N elements starting at element M.
Definition: vec.h:788
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Definition: fa_node.h:33
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Definition: types.h:31
void * mheap_alloc_with_lock(void *memory, uword size, int locked)
Definition: mem_dlmalloc.c:442
static void acl_plugin_print_pae(vlib_main_t *vm, int j, applied_hash_ace_entry_t *pae)
Definition: hash_lookup.c:1334
#define MHEAP_FLAG_VALIDATE
acl_main_t acl_main
Definition: acl.c:57
static void acl_plugin_print_applied_mask_info(vlib_main_t *vm, int j, hash_applied_mask_info_t *mi)
Definition: hash_lookup.c:1348
#define DBG0(...)
#define MHEAP_FLAG_TRACE
static applied_hash_ace_entry_t ** get_applied_hash_aces(acl_main_t *am, u32 lc_index)
Definition: hash_lookup.c:36
#define MHEAP_FLAG_SMALL_OBJECT_CACHE
ace_mask_type_entry_t * ace_mask_type_pool
Definition: acl.h:206
static u32 find_mask_type_index(acl_main_t *am, fa_5tuple_t *mask)
Definition: hash_lookup.c:262
u32 prev_applied_entry_index
static void fill_applied_hash_ace_kv(acl_main_t *am, applied_hash_ace_entry_t **applied_hash_aces, u32 lc_index, u32 new_index, clib_bihash_kv_48_8_t *kv)
Definition: hash_lookup.c:380
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Definition: fa_node.h:35
acl_lookup_context_t * acl_lookup_contexts
Definition: acl.h:139
uword hash_lookup_mheap_size
Definition: acl.h:149
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
u8 tcp_flags_mask
Definition: types.h:35
static void relax_ip4_addr(ip4_address_t *ip4_mask, int relax2)
Definition: hash_lookup.c:174
int use_tuple_merge
Definition: acl.h:199
static void hashtable_add_del(acl_main_t *am, clib_bihash_kv_48_8_t *kv, int is_add)
Definition: hash_lookup.c:48
static void ip6_address_mask_from_width(ip6_address_t *a, u32 width)
Definition: ip6_packet.h:279
u8 tcp_flags_value
Definition: types.h:34
static u32 tm_assign_mask_type_index(acl_main_t *am, fa_5tuple_t *mask, int is_ip6, u32 lc_index)
Definition: hash_lookup.c:325
void mheap_validate(void *v)
Definition: mheap.c:1378
#define vec_foreach(var, vec)
Vector iterator.
void * hash_lookup_mheap
Definition: acl.h:148
static void del_colliding_rule(applied_hash_ace_entry_t **applied_hash_aces, u32 head_index, u32 applied_entry_index)
Definition: hash_lookup.c:506
static void relax_tuple(fa_5tuple_t *mask, int is_ip6, int relax2)
Definition: hash_lookup.c:205
u32 tail_applied_entry_index
ip4_address_t ip4_addr[2]
Definition: fa_node.h:77
u16 mask_type_index_lsb
Definition: fa_node.h:31
static void remake_hash_applied_mask_info_vec(acl_main_t *am, applied_hash_ace_entry_t **applied_hash_aces, u32 lc_index)
Definition: hash_lookup.c:425
Definition: acl.h:89
static void make_ip6_address_mask(ip6_address_t *addr, u8 prefix_len)
Definition: hash_lookup.c:1067
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
void acl_plugin_show_tables_acl_hash_info(u32 acl_index)
Definition: hash_lookup.c:1296
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:762
acl_list_t * acls
Definition: acl.h:141
u32 ace_index
ip6_address_t ip6_addr[2]
Definition: fa_node.h:79
foreach_fa_cleaner_counter vlib_main_t * vlib_main
Definition: acl.h:314