FD.io VPP  v19.04-6-g6f05f72
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);
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  pae->collision_head_ae_index = head_index;
545  vec_add1 (head_pae->colliding_rules, cr);
546  if (ACL_HASH_LOOKUP_DEBUG > 0)
547  acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae);
548 }
549 
550 static u32
552  u32 lc_index,
553  applied_hash_ace_entry_t **applied_hash_aces,
554  u32 new_index)
555 {
557  ASSERT(new_index != ~0);
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  u32 first_index = result_val->applied_entry_index;
573  ASSERT(first_index != ~0);
574  ASSERT(first_index < vec_len((*applied_hash_aces)));
575  /* There already exists an entry or more. Append at the end. */
576  DBG("A key already exists, with applied entry index: %d", first_index);
577  add_colliding_rule(am, applied_hash_aces, first_index, new_index);
578  return first_index;
579  } else {
580  /* It's the very first entry */
581  hashtable_add_del(am, &kv, 1);
582  ASSERT(new_index != ~0);
583  add_colliding_rule(am, applied_hash_aces, new_index, new_index);
584  return new_index;
585  }
586 }
587 
588 
589 static void *
591 {
592  if (0 == am->hash_lookup_mheap) {
593  am->hash_lookup_mheap = mheap_alloc_with_lock (0 /* use VM */ ,
595  1 /* locked */);
596  if (0 == am->hash_lookup_mheap) {
597  clib_error("ACL plugin failed to allocate lookup heap of %U bytes",
599  }
600 #if USE_DLMALLOC != 0
601  /*
602  * DLMALLOC is being "helpful" in that it ignores the heap size parameter
603  * by default and tries to allocate the larger amount of memory.
604  *
605  * Pin the heap so this does not happen and if we run out of memory
606  * in this heap, we will bail out with "out of memory", rather than
607  * an obscure error sometime later.
608  */
610 #endif
611  }
612  void *oldheap = clib_mem_set_heap(am->hash_lookup_mheap);
613  return oldheap;
614 }
615 
616 void
618 {
619  acl_main_t *am = &acl_main;
621 #if USE_DLMALLOC == 0
623  if (on) {
626  mheap_validate(h);
627  } else {
628  h->flags &= ~MHEAP_FLAG_VALIDATE;
630  }
631 #endif
632 }
633 
634 void
636 {
637  acl_main_t *am = &acl_main;
639 #if USE_DLMALLOC == 0
641  if (on) {
642  h->flags |= MHEAP_FLAG_TRACE;
643  } else {
644  h->flags &= ~MHEAP_FLAG_TRACE;
645  }
646 #endif
647 }
648 
649 static void
651 {
654 
656  fa_5tuple_t mask;
657  /*
658  * Start taking base_mask associated to ace, and essentially copy it.
659  * With TupleMerge we will assign a relaxed mask here.
660  */
662  mask = mte->mask;
663  if (am->use_tuple_merge)
664  pae->mask_type_index = tm_assign_mask_type_index(am, &mask, is_ip6, lc_index);
665  else
666  pae->mask_type_index = assign_mask_type_index(am, &mask);
667 }
668 
669 static void
670 split_partition(acl_main_t *am, u32 first_index,
671  u32 lc_index, int is_ip6);
672 
673 
674 static void
675 check_collision_count_and_maybe_split(acl_main_t *am, u32 lc_index, int is_ip6, u32 first_index)
676 {
677  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
678  applied_hash_ace_entry_t *first_pae = vec_elt_at_index((*applied_hash_aces), first_index);
679  if (vec_len(first_pae->colliding_rules) > am->tuple_merge_split_threshold) {
680  split_partition(am, first_index, lc_index, is_ip6);
681  }
682 }
683 
684 void
685 hash_acl_apply(acl_main_t *am, u32 lc_index, int acl_index, u32 acl_position)
686 {
687  int i;
688 
689  DBG0("HASH ACL apply: lc_index %d acl %d", lc_index, acl_index);
690  if (!am->acl_lookup_hash_initialized) {
691  BV (clib_bihash_init) (&am->acl_lookup_hash, "ACL plugin rule lookup bihash",
694  }
695 
696  void *oldheap = hash_acl_set_heap(am);
698  vec_validate(am->hash_acl_infos, acl_index);
699  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
700 
701  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
702  u32 **hash_acl_applied_lc_index = &ha->lc_index_list;
703 
704  int base_offset = vec_len(*applied_hash_aces);
705 
706  /* Update the bitmap of the mask types with which the lookup
707  needs to happen for the ACLs applied to this lc_index */
709  vec_validate((*applied_hash_acls), lc_index);
710  applied_hash_acl_info_t *pal = vec_elt_at_index((*applied_hash_acls), lc_index);
711 
712  /* ensure the list of applied hash acls is initialized and add this acl# to it */
713  u32 index = vec_search(pal->applied_acls, acl_index);
714  if (index != ~0) {
715  clib_warning("BUG: trying to apply twice acl_index %d on lc_index %d, according to lc",
716  acl_index, lc_index);
717  goto done;
718  }
719  vec_add1(pal->applied_acls, acl_index);
720  u32 index2 = vec_search((*hash_acl_applied_lc_index), lc_index);
721  if (index2 != ~0) {
722  clib_warning("BUG: trying to apply twice acl_index %d on lc_index %d, according to hash h-acl info",
723  acl_index, lc_index);
724  goto done;
725  }
726  vec_add1((*hash_acl_applied_lc_index), lc_index);
727 
728  /*
729  * if the applied ACL is empty, the current code will cause a
730  * different behavior compared to current linear search: an empty ACL will
731  * simply fallthrough to the next ACL, or the default deny in the end.
732  *
733  * This is not a problem, because after vpp-dev discussion,
734  * the consensus was it should not be possible to apply the non-existent
735  * ACL, so the change adding this code also takes care of that.
736  */
737 
738 
740 
741  /* since we know (in case of no split) how much we expand, preallocate that space */
742  if (vec_len(ha->rules) > 0) {
743  int old_vec_len = vec_len(*applied_hash_aces);
744  vec_validate((*applied_hash_aces), old_vec_len + vec_len(ha->rules) - 1);
745  _vec_len((*applied_hash_aces)) = old_vec_len;
746  }
747 
748  /* add the rules from the ACL to the hash table for lookup and append to the vector*/
749  for(i=0; i < vec_len(ha->rules); i++) {
750  /*
751  * Expand the applied aces vector to fit a new entry.
752  * One by one not to upset split_partition() if it is called.
753  */
754  vec_resize((*applied_hash_aces), 1);
755 
756  int is_ip6 = ha->rules[i].match.pkt.is_ip6;
757  u32 new_index = base_offset + i;
758  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), new_index);
759  pae->acl_index = acl_index;
760  pae->ace_index = ha->rules[i].ace_index;
761  pae->acl_position = acl_position;
762  pae->action = ha->rules[i].action;
763  pae->hitcount = 0;
764  pae->hash_ace_info_index = i;
765  /* we might link it in later */
766  pae->collision_head_ae_index = ~0;
767  pae->colliding_rules = NULL;
768  pae->mask_type_index = ~0;
769  assign_mask_type_index_to_pae(am, lc_index, is_ip6, pae);
770  u32 first_index = activate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, new_index);
771  if (am->use_tuple_merge)
772  check_collision_count_and_maybe_split(am, lc_index, is_ip6, first_index);
773  }
774  remake_hash_applied_mask_info_vec(am, applied_hash_aces, lc_index);
775 done:
776  clib_mem_set_heap (oldheap);
777 }
778 
779 static u32
781 {
782  ASSERT(curr_index != ~0);
783  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), curr_index);
784  ASSERT(pae);
785  ASSERT(pae->collision_head_ae_index != ~0);
786  return pae->collision_head_ae_index;
787 }
788 
789 static void
790 set_collision_head_ae_index(applied_hash_ace_entry_t **applied_hash_aces, collision_match_rule_t *colliding_rules, u32 new_index)
791 {
793  vec_foreach(cr, colliding_rules) {
794  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), cr->applied_entry_index);
795  pae->collision_head_ae_index = new_index;
796  }
797 }
798 
799 static void
801  u32 lc_index,
802  applied_hash_ace_entry_t **applied_hash_aces,
803  u32 old_index, u32 new_index)
804 {
805  ASSERT(old_index != ~0);
806  ASSERT(new_index != ~0);
807  /* move the entry */
808  *vec_elt_at_index((*applied_hash_aces), new_index) = *vec_elt_at_index((*applied_hash_aces), old_index);
809 
810  /* update the linkage and hash table if necessary */
811  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), old_index);
812  applied_hash_ace_entry_t *new_pae = vec_elt_at_index((*applied_hash_aces), new_index);
813 
814  if (ACL_HASH_LOOKUP_DEBUG > 0) {
815  clib_warning("Moving pae from %d to %d", old_index, new_index);
816  acl_plugin_print_pae(am->vlib_main, old_index, pae);
817  }
818 
819  if (pae->collision_head_ae_index == old_index) {
820  /* first entry - so the hash points to it, update */
821  add_del_hashtable_entry(am, lc_index,
822  applied_hash_aces, new_index, 1);
823  }
824  if (new_pae->colliding_rules) {
825  /* update the information within the collision rule entry */
826  ASSERT(vec_len(new_pae->colliding_rules) > 0);
828  ASSERT(cr->applied_entry_index == old_index);
829  cr->applied_entry_index = new_index;
830  set_collision_head_ae_index(applied_hash_aces, new_pae->colliding_rules, new_index);
831  } else {
832  /* find the index in the collision rule entry on the head element */
833  u32 head_index = find_head_applied_ace_index(applied_hash_aces, new_index);
834  ASSERT(head_index != ~0);
835  applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), head_index);
836  ASSERT(vec_len(head_pae->colliding_rules) > 0);
837  u32 i;
838  for (i=0; i<vec_len(head_pae->colliding_rules); i++) {
840  if (cr->applied_entry_index == old_index) {
841  cr->applied_entry_index = new_index;
842  }
843  }
844  if (ACL_HASH_LOOKUP_DEBUG > 0) {
845  clib_warning("Head pae at index %d after adjustment", head_index);
846  acl_plugin_print_pae(am->vlib_main, head_index, head_pae);
847  }
848  }
849  /* invalidate the old entry */
850  pae->collision_head_ae_index = ~0;
851  pae->colliding_rules = NULL;
852 }
853 
854 static void
856  u32 lc_index,
857  applied_hash_ace_entry_t **applied_hash_aces,
858  u32 old_index)
859 {
860  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), old_index);
861  DBG("UNAPPLY DEACTIVATE: lc_index %d applied index %d", lc_index, old_index);
862  if (ACL_HASH_LOOKUP_DEBUG > 0) {
863  clib_warning("Deactivating pae at index %d", old_index);
864  acl_plugin_print_pae(am->vlib_main, old_index, pae);
865  }
866 
867  if (pae->collision_head_ae_index != old_index) {
868  DBG("UNAPPLY = index %d has collision head %d", old_index, pae->collision_head_ae_index);
869 
870  u32 head_index = find_head_applied_ace_index(applied_hash_aces, old_index);
871  ASSERT(head_index != ~0);
872  del_colliding_rule(applied_hash_aces, head_index, old_index);
873 
874  } else {
875  /* It was the first entry. We need either to reset the hash entry or delete it */
876  /* delete our entry from the collision vector first */
877  del_colliding_rule(applied_hash_aces, old_index, old_index);
878  if (vec_len(pae->colliding_rules) > 0) {
879  u32 next_pae_index = pae->colliding_rules[0].applied_entry_index;
880  applied_hash_ace_entry_t *next_pae = vec_elt_at_index((*applied_hash_aces), next_pae_index);
881  /* Remove ourselves and transfer the ownership of the colliding rules vector */
882  next_pae->colliding_rules = pae->colliding_rules;
883  set_collision_head_ae_index(applied_hash_aces, next_pae->colliding_rules, next_pae_index);
884  add_del_hashtable_entry(am, lc_index,
885  applied_hash_aces, next_pae_index, 1);
886  } else {
887  /* no next entry, so just delete the entry in the hash table */
888  add_del_hashtable_entry(am, lc_index,
889  applied_hash_aces, old_index, 0);
890  }
891  }
892  DBG0("Releasing mask type index %d for pae index %d on lc_index %d", pae->mask_type_index, old_index, lc_index);
894  /* invalidate the old entry */
895  pae->mask_type_index = ~0;
896  pae->collision_head_ae_index = ~0;
897  /* always has to be 0 */
898  pae->colliding_rules = NULL;
899 }
900 
901 
902 void
904 {
905  int i;
906 
907  DBG0("HASH ACL unapply: lc_index %d acl %d", lc_index, acl_index);
909  applied_hash_acl_info_t *pal = vec_elt_at_index((*applied_hash_acls), lc_index);
910 
911  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
912  u32 **hash_acl_applied_lc_index = &ha->lc_index_list;
913 
914  if (ACL_HASH_LOOKUP_DEBUG > 0) {
915  clib_warning("unapplying acl %d", acl_index);
919  }
920 
921  /* remove this acl# from the list of applied hash acls */
922  u32 index = vec_search(pal->applied_acls, acl_index);
923  if (index == ~0) {
924  clib_warning("BUG: trying to unapply unapplied acl_index %d on lc_index %d, according to lc",
925  acl_index, lc_index);
926  return;
927  }
928  vec_del1(pal->applied_acls, index);
929 
930  u32 index2 = vec_search((*hash_acl_applied_lc_index), lc_index);
931  if (index2 == ~0) {
932  clib_warning("BUG: trying to unapply twice acl_index %d on lc_index %d, according to h-acl info",
933  acl_index, lc_index);
934  return;
935  }
936  vec_del1((*hash_acl_applied_lc_index), index2);
937 
938  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
939 
940  for(i=0; i < vec_len((*applied_hash_aces)); i++) {
941  if (vec_elt_at_index(*applied_hash_aces,i)->acl_index == acl_index) {
942  DBG("Found applied ACL#%d at applied index %d", acl_index, i);
943  break;
944  }
945  }
946  if (vec_len((*applied_hash_aces)) <= i) {
947  DBG("Did not find applied ACL#%d at lc_index %d", acl_index, lc_index);
948  /* we went all the way without finding any entries. Probably a list was empty. */
949  return;
950  }
951 
952  void *oldheap = hash_acl_set_heap(am);
953  int base_offset = i;
954  int tail_offset = base_offset + vec_len(ha->rules);
955  int tail_len = vec_len((*applied_hash_aces)) - tail_offset;
956  DBG("base_offset: %d, tail_offset: %d, tail_len: %d", base_offset, tail_offset, tail_len);
957 
958  for(i=0; i < vec_len(ha->rules); i ++) {
960  applied_hash_aces, base_offset + i);
961  }
962  for(i=0; i < tail_len; i ++) {
963  /* move the entry at tail offset to base offset */
964  /* that is, from (tail_offset+i) -> (base_offset+i) */
965  DBG0("UNAPPLY MOVE: lc_index %d, applied index %d -> %d", lc_index, tail_offset+i, base_offset + i);
966  move_applied_ace_hash_entry(am, lc_index, applied_hash_aces, tail_offset + i, base_offset + i);
967  }
968  /* trim the end of the vector */
969  _vec_len((*applied_hash_aces)) -= vec_len(ha->rules);
970 
971  remake_hash_applied_mask_info_vec(am, applied_hash_aces, lc_index);
972 
973  if (vec_len((*applied_hash_aces)) == 0) {
974  vec_free((*applied_hash_aces));
975  }
976 
977  clib_mem_set_heap (oldheap);
978 }
979 
980 /*
981  * Create the applied ACEs and update the hash table,
982  * taking into account that the ACL may not be the last
983  * in the vector of applied ACLs.
984  *
985  * For now, walk from the end of the vector and unapply the ACLs,
986  * then apply the one in question and reapply the rest.
987  */
988 
989 void
991 {
993  u32 **applied_acls = &acontext->acl_indices;
994  int i;
995  int start_index = vec_search((*applied_acls), acl_index);
996 
997  DBG0("Start index for acl %d in lc_index %d is %d", acl_index, lc_index, start_index);
998  /*
999  * This function is called after we find out the lc_index where ACL is applied.
1000  * If the by-lc_index vector does not have the ACL#, then it's a bug.
1001  */
1002  ASSERT(start_index < vec_len(*applied_acls));
1003 
1004  /* unapply all the ACLs at the tail side, up to the current one */
1005  for(i = vec_len(*applied_acls) - 1; i > start_index; i--) {
1006  hash_acl_unapply(am, lc_index, *vec_elt_at_index(*applied_acls, i));
1007  }
1008  for(i = start_index; i < vec_len(*applied_acls); i++) {
1009  hash_acl_apply(am, lc_index, *vec_elt_at_index(*applied_acls, i), i);
1010  }
1011 }
1012 
1013 static void
1015 {
1016  ip6_address_mask_from_width(addr, prefix_len);
1017 }
1018 
1019 
1020 /* Maybe should be moved into the core somewhere */
1021 always_inline void
1023 {
1024  int i, byte, bit, bitnum;
1025  ASSERT (width <= 32);
1026  clib_memset (a, 0, sizeof (a[0]));
1027  for (i = 0; i < width; i++)
1028  {
1029  bitnum = (7 - (i & 7));
1030  byte = i / 8;
1031  bit = 1 << bitnum;
1032  a->as_u8[byte] |= bit;
1033  }
1034 }
1035 
1036 
1037 static void
1039 {
1040  ip4_address_mask_from_width(addr, prefix_len);
1041 }
1042 
1043 static void
1044 make_port_mask(u16 *portmask, u16 port_first, u16 port_last)
1045 {
1046  if (port_first == port_last) {
1047  *portmask = 0xffff;
1048  /* single port is representable by masked value */
1049  return;
1050  }
1051 
1052  *portmask = 0;
1053  return;
1054 }
1055 
1056 static void
1058 {
1059  clib_memset(mask, 0, sizeof(*mask));
1060  clib_memset(&hi->match, 0, sizeof(hi->match));
1061  hi->action = r->is_permit;
1062 
1063  /* we will need to be matching based on lc_index and mask_type_index when applied */
1064  mask->pkt.lc_index = ~0;
1065  /* we will assign the match of mask_type_index later when we find it*/
1066  mask->pkt.mask_type_index_lsb = ~0;
1067 
1068  mask->pkt.is_ip6 = 1;
1069  hi->match.pkt.is_ip6 = r->is_ipv6;
1070  if (r->is_ipv6) {
1072  hi->match.ip6_addr[0] = r->src.ip6;
1074  hi->match.ip6_addr[1] = r->dst.ip6;
1075  } else {
1076  clib_memset(hi->match.l3_zero_pad, 0, sizeof(hi->match.l3_zero_pad));
1078  hi->match.ip4_addr[0] = r->src.ip4;
1080  hi->match.ip4_addr[1] = r->dst.ip4;
1081  }
1082 
1083  if (r->proto != 0) {
1084  mask->l4.proto = ~0; /* L4 proto needs to be matched */
1085  hi->match.l4.proto = r->proto;
1086 
1087  /* Calculate the src/dst port masks and make the src/dst port matches accordingly */
1089  hi->match.l4.port[0] = r->src_port_or_type_first & mask->l4.port[0];
1090 
1092  hi->match.l4.port[1] = r->dst_port_or_code_first & mask->l4.port[1];
1093  /* L4 info must be valid in order to match */
1094  mask->pkt.l4_valid = 1;
1095  hi->match.pkt.l4_valid = 1;
1096  /* And we must set the mask to check that it is an initial fragment */
1097  mask->pkt.is_nonfirst_fragment = 1;
1098  hi->match.pkt.is_nonfirst_fragment = 0;
1099  if ((r->proto == IPPROTO_TCP) && (r->tcp_flags_mask != 0)) {
1100  /* if we want to match on TCP flags, they must be masked off as well */
1101  mask->pkt.tcp_flags = r->tcp_flags_mask;
1103  /* and the flags need to be present within the packet being matched */
1104  mask->pkt.tcp_flags_valid = 1;
1105  hi->match.pkt.tcp_flags_valid = 1;
1106  }
1107  }
1108  /* Sanitize the mask and the match */
1109  u64 *pmask = (u64 *)mask;
1110  u64 *pmatch = (u64 *)&hi->match;
1111  int j;
1112  for(j=0; j<6; j++) {
1113  pmatch[j] = pmatch[j] & pmask[j];
1114  }
1115 }
1116 
1117 
1119 {
1120  if (acl_index >= vec_len(am->hash_acl_infos))
1121  return 0;
1122 
1123  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1124  return ha->hash_acl_exists;
1125 }
1126 
1128 {
1129  void *oldheap = hash_acl_set_heap(am);
1130  DBG("HASH ACL add : %d", acl_index);
1131  int i;
1132  acl_rule_t *acl_rules = am->acls[acl_index].rules;
1133  vec_validate(am->hash_acl_infos, acl_index);
1134  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1135  clib_memset(ha, 0, sizeof(*ha));
1136  ha->hash_acl_exists = 1;
1137 
1138  /* walk the newly added ACL entries and ensure that for each of them there
1139  is a mask type, increment a reference count for that mask type */
1140 
1141  /* avoid small requests by preallocating the entire vector before running the additions */
1142  if (vec_len(acl_rules) > 0) {
1143  vec_validate(ha->rules, vec_len(acl_rules)-1);
1144  vec_reset_length(ha->rules);
1145  }
1146 
1147  for(i=0; i < vec_len(acl_rules); i++) {
1148  hash_ace_info_t ace_info;
1149  fa_5tuple_t mask;
1150  clib_memset(&ace_info, 0, sizeof(ace_info));
1151  ace_info.acl_index = acl_index;
1152  ace_info.ace_index = i;
1153 
1154  make_mask_and_match_from_rule(&mask, &acl_rules[i], &ace_info);
1155  mask.pkt.flags_reserved = 0b000;
1156  ace_info.base_mask_type_index = assign_mask_type_index(am, &mask);
1157  /* assign the mask type index for matching itself */
1158  ace_info.match.pkt.mask_type_index_lsb = ace_info.base_mask_type_index;
1159  DBG("ACE: %d mask_type_index: %d", i, ace_info.base_mask_type_index);
1160  vec_add1(ha->rules, ace_info);
1161  }
1162  /*
1163  * if an ACL is applied somewhere, fill the corresponding lookup data structures.
1164  * We need to take care if the ACL is not the last one in the vector of ACLs applied to the interface.
1165  */
1166  if (acl_index < vec_len(am->lc_index_vec_by_acl)) {
1167  u32 *lc_index;
1168  vec_foreach(lc_index, am->lc_index_vec_by_acl[acl_index]) {
1169  hash_acl_reapply(am, *lc_index, acl_index);
1170  }
1171  }
1172  clib_mem_set_heap (oldheap);
1173 }
1174 
1176 {
1177  void *oldheap = hash_acl_set_heap(am);
1178  DBG0("HASH ACL delete : %d", acl_index);
1179  /*
1180  * If the ACL is applied somewhere, remove the references of it (call hash_acl_unapply)
1181  * this is a different behavior from the linear lookup where an empty ACL is "deny all",
1182  *
1183  * However, following vpp-dev discussion the ACL that is referenced elsewhere
1184  * should not be possible to delete, and the change adding this also adds
1185  * the safeguards to that respect, so this is not a problem.
1186  *
1187  * The part to remember is that this routine is called in process of reapplication
1188  * during the acl_add_replace() API call - the old acl ruleset is deleted, then
1189  * the new one is added, without the change in the applied ACLs - so this case
1190  * has to be handled.
1191  */
1192  hash_acl_info_t *ha = vec_elt_at_index(am->hash_acl_infos, acl_index);
1193  u32 *lc_list_copy = 0;
1194  {
1195  u32 *lc_index;
1196  lc_list_copy = vec_dup(ha->lc_index_list);
1197  vec_foreach(lc_index, lc_list_copy) {
1198  hash_acl_unapply(am, *lc_index, acl_index);
1199  }
1200  vec_free(lc_list_copy);
1201  }
1202  vec_free(ha->lc_index_list);
1203 
1204  /* walk the mask types for the ACL about-to-be-deleted, and decrease
1205  * the reference count, possibly freeing up some of them */
1206  int i;
1207  for(i=0; i < vec_len(ha->rules); i++) {
1209  }
1210  ha->hash_acl_exists = 0;
1211  vec_free(ha->rules);
1212  clib_mem_set_heap (oldheap);
1213 }
1214 
1215 
1216 void
1218 {
1219  vlib_cli_output(vm, "\nACL lookup hash table:\n%U\n",
1220  BV (format_bihash), &am->acl_lookup_hash, verbose);
1221 }
1222 
1223 void
1225 {
1226  acl_main_t *am = &acl_main;
1227  vlib_main_t *vm = am->vlib_main;
1228  ace_mask_type_entry_t *mte;
1229 
1230  vlib_cli_output (vm, "Mask-type entries:");
1231  /* *INDENT-OFF* */
1233  ({
1234  vlib_cli_output(vm, " %3d: %016llx %016llx %016llx %016llx %016llx %016llx refcount %d",
1235  mte - am->ace_mask_type_pool,
1236  mte->mask.kv_40_8.key[0], mte->mask.kv_40_8.key[1], mte->mask.kv_40_8.key[2],
1237  mte->mask.kv_40_8.key[3], mte->mask.kv_40_8.key[4], mte->mask.kv_40_8.value, mte->refcount);
1238  }));
1239  /* *INDENT-ON* */
1240 }
1241 
1242 void
1244 {
1245  acl_main_t *am = &acl_main;
1246  vlib_main_t *vm = am->vlib_main;
1247  u32 i, j;
1248  u64 *m;
1249  vlib_cli_output (vm, "Mask-ready ACL representations\n");
1250  for (i = 0; i < vec_len (am->hash_acl_infos); i++)
1251  {
1252  if ((acl_index != ~0) && (acl_index != i))
1253  {
1254  continue;
1255  }
1256  hash_acl_info_t *ha = &am->hash_acl_infos[i];
1257  vlib_cli_output (vm, "acl-index %u bitmask-ready layout\n", i);
1258  vlib_cli_output (vm, " applied lc_index list: %U\n",
1259  format_vec32, ha->lc_index_list, "%d");
1260  for (j = 0; j < vec_len (ha->rules); j++)
1261  {
1262  hash_ace_info_t *pa = &ha->rules[j];
1263  m = (u64 *) & pa->match;
1264  vlib_cli_output (vm,
1265  " %4d: %016llx %016llx %016llx %016llx %016llx %016llx base mask index %d acl %d rule %d action %d\n",
1266  j, m[0], m[1], m[2], m[3], m[4], m[5],
1268  pa->action);
1269  }
1270  }
1271 }
1272 
1273 static void
1275  vlib_cli_output(vm,
1276  " %4d: acl %d ace %d acl pos %d pae index: %d",
1277  j, cr->acl_index, cr->ace_index, cr->acl_position, cr->applied_entry_index);
1278 }
1279 
1280 static void
1282 {
1283  vlib_cli_output (vm,
1284  " %4d: acl %d rule %d action %d bitmask-ready rule %d mask type index: %d colliding_rules: %d collision_head_ae_idx %d hitcount %lld acl_pos: %d",
1285  j, pae->acl_index, pae->ace_index, pae->action,
1287  pae->hitcount, pae->acl_position);
1288  int jj;
1289  for(jj=0; jj<vec_len(pae->colliding_rules); jj++)
1291 }
1292 
1293 static void
1295 {
1296  vlib_cli_output (vm,
1297  " %4d: mask type index %d first rule index %d num_entries %d max_collisions %d",
1299 }
1300 
1301 void
1303 {
1304  acl_main_t *am = &acl_main;
1305  vlib_main_t *vm = am->vlib_main;
1306  u32 lci, j;
1307  vlib_cli_output (vm, "Applied lookup entries for lookup contexts");
1308 
1309  for (lci = 0;
1310  (lci < vec_len(am->applied_hash_acl_info_by_lc_index)); lci++)
1311  {
1312  if ((lc_index != ~0) && (lc_index != lci))
1313  {
1314  continue;
1315  }
1316  vlib_cli_output (vm, "lc_index %d:", lci);
1318  {
1321  vlib_cli_output (vm, " applied acls: %U", format_vec32,
1322  pal->applied_acls, "%d");
1323  }
1325  {
1326  vlib_cli_output (vm, " applied mask info entries:");
1327  for (j = 0;
1329  j++)
1330  {
1333  [lci][j]);
1334  }
1335  }
1336  if (lci < vec_len (am->hash_entry_vec_by_lc_index))
1337  {
1338  vlib_cli_output (vm, " lookup applied entries:");
1339  for (j = 0;
1340  j < vec_len (am->hash_entry_vec_by_lc_index[lci]);
1341  j++)
1342  {
1343  acl_plugin_print_pae (vm, j,
1345  [lci][j]);
1346  }
1347  }
1348  }
1349 }
1350 
1351 void
1352 acl_plugin_show_tables_bihash (u32 show_bihash_verbose)
1353 {
1354  acl_main_t *am = &acl_main;
1355  vlib_main_t *vm = am->vlib_main;
1356  show_hash_acl_hash (vm, am, show_bihash_verbose);
1357 }
1358 
1359 /*
1360  * Split of the partition needs to happen when the collision count
1361  * goes over a specified threshold.
1362  *
1363  * This is a signal that we ignored too many bits in
1364  * mT and we need to split the table into two tables. We select
1365  * all of the colliding rules L and find their maximum common
1366  * tuple mL. Normally mL is specific enough to hash L with few
1367  * or no collisions. We then create a new table T2 with tuple mL
1368  * and transfer all compatible rules from T to T2. If mL is not
1369  * specific enough, we find the field with the biggest difference
1370  * between the minimum and maximum tuple lengths for all of
1371  * the rules in L and set that field to be the average of those two
1372  * values. We then transfer all compatible rules as before. This
1373  * guarantees that some rules from L will move and that T2 will
1374  * have a smaller number of collisions than T did.
1375  */
1376 
1377 
1378 static void
1380 {
1381  int update =
1382  (clib_net_to_host_u64 (mask_addr->as_u64[0]) <
1383  clib_net_to_host_u64 (min_addr->as_u64[0]))
1384  ||
1385  ((clib_net_to_host_u64 (mask_addr->as_u64[0]) ==
1386  clib_net_to_host_u64 (min_addr->as_u64[0]))
1387  && (clib_net_to_host_u64 (mask_addr->as_u64[1]) <
1388  clib_net_to_host_u64 (min_addr->as_u64[1])));
1389  if (update)
1390  {
1391  min_addr->as_u64[0] = mask_addr->as_u64[0];
1392  min_addr->as_u64[1] = mask_addr->as_u64[1];
1393  }
1394 }
1395 
1396 static void
1398 {
1399  int update =
1400  (clib_net_to_host_u64 (mask_addr->as_u64[0]) >
1401  clib_net_to_host_u64 (max_addr->as_u64[0]))
1402  ||
1403  ((clib_net_to_host_u64 (mask_addr->as_u64[0]) ==
1404  clib_net_to_host_u64 (max_addr->as_u64[0]))
1405  && (clib_net_to_host_u64 (mask_addr->as_u64[1]) >
1406  clib_net_to_host_u64 (max_addr->as_u64[1])));
1407  if (update)
1408  {
1409  max_addr->as_u64[0] = mask_addr->as_u64[0];
1410  max_addr->as_u64[1] = mask_addr->as_u64[1];
1411  }
1412 }
1413 
1414 static void
1416 {
1417  int update =
1418  (clib_net_to_host_u32 (mask_addr->as_u32) <
1419  clib_net_to_host_u32 (min_addr->as_u32));
1420  if (update)
1421  min_addr->as_u32 = mask_addr->as_u32;
1422 }
1423 
1424 static void
1426 {
1427  int update =
1428  (clib_net_to_host_u32 (mask_addr->as_u32) >
1429  clib_net_to_host_u32 (max_addr->as_u32));
1430  if (update)
1431  max_addr->as_u32 = mask_addr->as_u32;
1432 }
1433 
1434 enum {
1440 };
1441 
1442 
1443 
1444 static void
1445 split_partition(acl_main_t *am, u32 first_index,
1446  u32 lc_index, int is_ip6){
1447  DBG( "TM-split_partition - first_entry:%d", first_index);
1448  applied_hash_ace_entry_t **applied_hash_aces = get_applied_hash_aces(am, lc_index);
1449  ace_mask_type_entry_t *mte;
1450  fa_5tuple_t the_min_tuple, *min_tuple = &the_min_tuple;
1451  fa_5tuple_t the_max_tuple, *max_tuple = &the_max_tuple;
1452  applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), first_index);
1454  hash_ace_info_t *ace_info;
1455  u32 coll_mask_type_index = pae->mask_type_index;
1456  clib_memset(&the_min_tuple, 0, sizeof(the_min_tuple));
1457  clib_memset(&the_max_tuple, 0, sizeof(the_max_tuple));
1458 
1459  int i=0;
1460  collision_match_rule_t *colliding_rules = pae->colliding_rules;
1461  u64 collisions = vec_len(pae->colliding_rules);
1462  for(i=0; i<collisions; i++){
1463  /* reload the hash acl info as it might be a different ACL# */
1464  pae = vec_elt_at_index((*applied_hash_aces), colliding_rules[i].applied_entry_index);
1465  ha = vec_elt_at_index(am->hash_acl_infos, pae->acl_index);
1466 
1467  DBG( "TM-collision: base_ace:%d (ace_mask:%d, first_collision_mask:%d)",
1468  pae->ace_index, pae->mask_type_index, coll_mask_type_index);
1469 
1470  ace_info = vec_elt_at_index(ha->rules, pae->hash_ace_info_index);
1472  fa_5tuple_t *mask = &mte->mask;
1473 
1474  if(pae->mask_type_index != coll_mask_type_index) continue;
1475  /* Computing min_mask and max_mask for colliding rules */
1476  if(i==0){
1477  clib_memcpy_fast(min_tuple, mask, sizeof(fa_5tuple_t));
1478  clib_memcpy_fast(max_tuple, mask, sizeof(fa_5tuple_t));
1479  }else{
1480  int j;
1481  for(j=0; j<2; j++){
1482  if (is_ip6)
1483  ensure_ip6_min_addr(&min_tuple->ip6_addr[j], &mask->ip6_addr[j]);
1484  else
1485  ensure_ip4_min_addr(&min_tuple->ip4_addr[j], &mask->ip4_addr[j]);
1486 
1487  if ((mask->l4.port[j] < min_tuple->l4.port[j]))
1488  min_tuple->l4.port[j] = mask->l4.port[j];
1489  }
1490 
1491  if ((mask->l4.proto < min_tuple->l4.proto))
1492  min_tuple->l4.proto = mask->l4.proto;
1493 
1494  if(mask->pkt.as_u64 < min_tuple->pkt.as_u64)
1495  min_tuple->pkt.as_u64 = mask->pkt.as_u64;
1496 
1497 
1498  for(j=0; j<2; j++){
1499  if (is_ip6)
1500  ensure_ip6_max_addr(&max_tuple->ip6_addr[j], &mask->ip6_addr[j]);
1501  else
1502  ensure_ip4_max_addr(&max_tuple->ip4_addr[j], &mask->ip4_addr[j]);
1503 
1504  if ((mask->l4.port[j] > max_tuple->l4.port[j]))
1505  max_tuple->l4.port[j] = mask->l4.port[j];
1506  }
1507 
1508  if ((mask->l4.proto < max_tuple->l4.proto))
1509  max_tuple->l4.proto = mask->l4.proto;
1510 
1511  if(mask->pkt.as_u64 > max_tuple->pkt.as_u64)
1512  max_tuple->pkt.as_u64 = mask->pkt.as_u64;
1513  }
1514  }
1515 
1516  /* Computing field with max difference between (min/max)_mask */
1517  int best_dim=-1, best_delta=0, delta=0;
1518 
1519  /* SRC_addr dimension */
1520  if (is_ip6) {
1521  int i;
1522  for(i=0; i<2; i++){
1523  delta += count_bits(max_tuple->ip6_addr[0].as_u64[i]) - count_bits(min_tuple->ip6_addr[0].as_u64[i]);
1524  }
1525  } else {
1526  delta += count_bits(max_tuple->ip4_addr[0].as_u32) - count_bits(min_tuple->ip4_addr[0].as_u32);
1527  }
1528  if(delta > best_delta){
1529  best_delta = delta;
1530  best_dim = DIM_SRC_ADDR;
1531  }
1532 
1533  /* DST_addr dimension */
1534  delta = 0;
1535  if (is_ip6) {
1536  int i;
1537  for(i=0; i<2; i++){
1538  delta += count_bits(max_tuple->ip6_addr[1].as_u64[i]) - count_bits(min_tuple->ip6_addr[1].as_u64[i]);
1539  }
1540  } else {
1541  delta += count_bits(max_tuple->ip4_addr[1].as_u32) - count_bits(min_tuple->ip4_addr[1].as_u32);
1542  }
1543  if(delta > best_delta){
1544  best_delta = delta;
1545  best_dim = DIM_DST_ADDR;
1546  }
1547 
1548  /* SRC_port dimension */
1549  delta = count_bits(max_tuple->l4.port[0]) - count_bits(min_tuple->l4.port[0]);
1550  if(delta > best_delta){
1551  best_delta = delta;
1552  best_dim = DIM_SRC_PORT;
1553  }
1554 
1555  /* DST_port dimension */
1556  delta = count_bits(max_tuple->l4.port[1]) - count_bits(min_tuple->l4.port[1]);
1557  if(delta > best_delta){
1558  best_delta = delta;
1559  best_dim = DIM_DST_PORT;
1560  }
1561 
1562  /* Proto dimension */
1563  delta = count_bits(max_tuple->l4.proto) - count_bits(min_tuple->l4.proto);
1564  if(delta > best_delta){
1565  best_delta = delta;
1566  best_dim = DIM_PROTO;
1567  }
1568 
1569  int shifting = 0; //, ipv4_block = 0;
1570  switch(best_dim){
1571  case DIM_SRC_ADDR:
1572  shifting = (best_delta)/2; // FIXME IPV4-only
1573  // ipv4_block = count_bits(max_tuple->ip4_addr[0].as_u32);
1574  min_tuple->ip4_addr[0].as_u32 =
1575  clib_host_to_net_u32((clib_net_to_host_u32(max_tuple->ip4_addr[0].as_u32) << (shifting))&0xFFFFFFFF);
1576 
1577  break;
1578  case DIM_DST_ADDR:
1579  shifting = (best_delta)/2;
1580 /*
1581  ipv4_block = count_bits(max_tuple->addr[1].as_u64[1]);
1582  if(ipv4_block > shifting)
1583  min_tuple->addr[1].as_u64[1] =
1584  clib_host_to_net_u64((clib_net_to_host_u64(max_tuple->addr[1].as_u64[1]) << (shifting))&0xFFFFFFFF);
1585  else{
1586  shifting = shifting - ipv4_block;
1587  min_tuple->addr[1].as_u64[1] = 0;
1588  min_tuple->addr[1].as_u64[0] =
1589  clib_host_to_net_u64((clib_net_to_host_u64(max_tuple->addr[1].as_u64[0]) << (shifting))&0xFFFFFFFF);
1590  }
1591 */
1592  min_tuple->ip4_addr[1].as_u32 =
1593  clib_host_to_net_u32((clib_net_to_host_u32(max_tuple->ip4_addr[1].as_u32) << (shifting))&0xFFFFFFFF);
1594 
1595  break;
1596  case DIM_SRC_PORT: min_tuple->l4.port[0] = max_tuple->l4.port[0] << (best_delta)/2;
1597  break;
1598  case DIM_DST_PORT: min_tuple->l4.port[1] = max_tuple->l4.port[1] << (best_delta)/2;
1599  break;
1600  case DIM_PROTO: min_tuple->l4.proto = max_tuple->l4.proto << (best_delta)/2;
1601  break;
1602  default: relax_tuple(min_tuple, is_ip6, 1);
1603  break;
1604  }
1605 
1606  min_tuple->pkt.is_nonfirst_fragment = 0;
1607  u32 new_mask_type_index = assign_mask_type_index(am, min_tuple);
1608 
1609  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);
1610 
1611  hash_applied_mask_info_t *minfo;
1612  //search in order pool if mask_type_index is already there
1613  int search;
1614  for (search=0; search < vec_len((*hash_applied_mask_info_vec)); search++){
1615  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), search);
1616  if(minfo->mask_type_index == new_mask_type_index)
1617  break;
1618  }
1619 
1620  vec_validate((*hash_applied_mask_info_vec), search);
1621  minfo = vec_elt_at_index((*hash_applied_mask_info_vec), search);
1622  minfo->mask_type_index = new_mask_type_index;
1623  minfo->num_entries = 0;
1624  minfo->max_collisions = 0;
1625  minfo->first_rule_index = ~0;
1626 
1627  DBG( "TM-split_partition - mask type index-assigned!! -> %d", new_mask_type_index);
1628 
1629  if(coll_mask_type_index == new_mask_type_index){
1630  //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);
1631  return;
1632  }
1633 
1634 
1635  /* populate new partition */
1636  DBG( "TM-Populate new partition");
1637  u32 r_ace_index = first_index;
1638  int repopulate_count = 0;
1639 
1640  collision_match_rule_t *temp_colliding_rules = vec_dup(colliding_rules);
1641  collisions = vec_len(temp_colliding_rules);
1642 
1643  for(i=0; i<collisions; i++){
1644 
1645  r_ace_index = temp_colliding_rules[i].applied_entry_index;
1646 
1647  applied_hash_ace_entry_t *pop_pae = vec_elt_at_index((*applied_hash_aces), r_ace_index);
1648  ha = vec_elt_at_index(am->hash_acl_infos, pop_pae->acl_index);
1649  DBG( "TM-Population-collision: base_ace:%d (ace_mask:%d, first_collision_mask:%d)",
1650  pop_pae->ace_index, pop_pae->mask_type_index, coll_mask_type_index);
1651 
1652  ASSERT(pop_pae->mask_type_index == coll_mask_type_index);
1653 
1654  ace_info = vec_elt_at_index(ha->rules, pop_pae->hash_ace_info_index);
1656  //can insert rule?
1657  //mte = vec_elt_at_index(am->ace_mask_type_pool, pop_pae->mask_type_index);
1658  fa_5tuple_t *pop_mask = &mte->mask;
1659 
1660  if(!first_mask_contains_second_mask(is_ip6, min_tuple, pop_mask)) continue;
1661  DBG( "TM-new partition can insert -> applied_ace:%d", r_ace_index);
1662 
1663  //delete and insert in new format
1664  deactivate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, r_ace_index);
1665 
1666  /* insert the new entry */
1667  pop_pae->mask_type_index = new_mask_type_index;
1668  /* The very first repopulation gets the lock by virtue of a new mask being created above */
1669  if (++repopulate_count > 1)
1670  lock_mask_type_index(am, new_mask_type_index);
1671 
1672  activate_applied_ace_hash_entry(am, lc_index, applied_hash_aces, r_ace_index);
1673 
1674  }
1675  vec_free(temp_colliding_rules);
1676 
1677  DBG( "TM-Populate new partition-END");
1678  DBG( "TM-split_partition - END");
1679 
1680 }
1681 
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:800
acl_rule_t * rules
Definition: acl.h:94
#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:1425
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:855
u32 acl_index
Definition: gbp.api:304
vmrglw vmrglh hi
u8 is_ipv6
Definition: types.h:24
fa_5tuple_t mask
Definition: acl.h:122
void acl_plugin_show_tables_mask_type(void)
Definition: hash_lookup.c:1224
static void ensure_ip6_min_addr(ip6_address_t *min_addr, ip6_address_t *mask_addr)
Definition: hash_lookup.c:1379
Definition: acl.h:118
a
Definition: bitmap.h:538
u32 acl_index
static void * hash_acl_set_heap(acl_main_t *am)
Definition: hash_lookup.c:590
fa_session_l4_key_t l4
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:903
void acl_plugin_hash_acl_set_trace_heap(int on)
Definition: hash_lookup.c:635
void acl_plugin_show_tables_applied_info(u32 lc_index)
Definition: hash_lookup.c:1302
void hash_acl_reapply(acl_main_t *am, u32 lc_index, int acl_index)
Definition: hash_lookup.c:990
#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
u8 dst_prefixlen
Definition: types.h:28
u8 action
u32 hash_ace_info_index
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:522
int i
static mheap_t * mheap_header(u8 *v)
clib_memset(h->entries, 0, sizeof(h->entries[0])*entries)
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:551
vhost_vring_addr_t addr
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:780
void hash_acl_add(acl_main_t *am, int acl_index)
Definition: hash_lookup.c:1127
u32 ** lc_index_vec_by_acl
Definition: acl.h:180
static void ensure_ip6_max_addr(ip6_address_t *max_addr, ip6_address_t *mask_addr)
Definition: hash_lookup.c:1397
u16 dst_port_or_code_last
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:1044
u32 acl_position
#define ACL_HASH_LOOKUP_DEBUG
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
Definition: pool.h:493
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:650
#define vec_new(T, N)
Create new vector of given type and length (unspecified alignment, no header).
Definition: vec.h:311
ip46_address_t src
Definition: types.h:25
u8 * format_memory_size(u8 *s, va_list *va)
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:940
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:685
static u32 assign_mask_type_index(acl_main_t *am, fa_5tuple_t *mask)
Definition: hash_lookup.c:276
int hash_acl_exists(acl_main_t *am, int acl_index)
Definition: hash_lookup.c:1118
ip46_address_t dst
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
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:514
u32 l3_zero_pad[6]
Definition: fa_node.h:76
static void ip4_address_mask_from_width(ip4_address_t *a, u32 width)
Definition: hash_lookup.c:1022
u32 mask_type_index
u16 dst_port_or_code_first
Definition: types.h:32
hash_applied_mask_info_t ** hash_applied_mask_info_vec_by_lc_index
Definition: acl.h:208
DLMALLOC_EXPORT void mspace_disable_expand(mspace msp)
unsigned short u16
Definition: types.h:57
hash_acl_info_t * hash_acl_infos
Definition: acl.h:141
#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
static void make_mask_and_match_from_rule(fa_5tuple_t *mask, acl_rule_t *r, hash_ace_info_t *hi)
Definition: hash_lookup.c:1057
u64 hitcount
hash_ace_info_t * rules
#define vec_del1(v, i)
Delete the element at index I.
Definition: vec.h:804
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:675
clib_bihash_48_8_t acl_lookup_hash
Definition: acl.h:142
void show_hash_acl_hash(vlib_main_t *vm, acl_main_t *am, u32 verbose)
Definition: hash_lookup.c:1217
static u32 shift_ip4_if(u32 mask, u32 thresh, int numshifts, u32 else_val)
Definition: hash_lookup.c:165
void acl_plugin_hash_acl_set_validate_heap(int on)
Definition: hash_lookup.c:617
u8 proto
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
u16 src_port_or_type_first
Definition: types.h:30
void acl_plugin_show_tables_bihash(u32 show_bihash_verbose)
Definition: hash_lookup.c:1352
#define pool_get_aligned(P, E, A)
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
u32 refcount
Definition: acl.h:123
static void split_partition(acl_main_t *am, u32 first_index, u32 lc_index, int is_ip6)
Definition: hash_lookup.c:1445
applied_hash_acl_info_t * applied_hash_acl_info_by_lc_index
Definition: acl.h:157
#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)
Definition: hash_lookup.c:1038
int acl_lookup_hash_initialized
Definition: acl.h:149
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:1175
#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
applied_hash_ace_entry_t ** hash_entry_vec_by_lc_index
Definition: acl.h:156
static u8 first_mask_contains_second_mask(int is_ip6, fa_5tuple_t *mask1, fa_5tuple_t *mask2)
Definition: hash_lookup.c:84
uword hash_lookup_hash_memory
Definition: acl.h:144
int tuple_merge_split_threshold
Definition: acl.h:202
static void relax_ip6_addr(ip6_address_t *ip6_mask, int relax2)
Definition: hash_lookup.c:187
static void acl_plugin_print_colliding_rule(vlib_main_t *vm, int j, collision_match_rule_t *cr)
Definition: hash_lookup.c:1274
u32 hash_lookup_hash_buckets
Definition: acl.h:143
#define ASSERT(truth)
static void ensure_ip4_min_addr(ip4_address_t *min_addr, ip4_address_t *mask_addr)
Definition: hash_lookup.c:1415
#define vec_delete(V, N, M)
Delete N elements starting at element M.
Definition: vec.h:784
u8 tcp_flags_valid
Definition: fa_node.h:33
u8 is_add
Definition: ipsec_gre.api:36
u16 src_port_or_type_last
Definition: types.h:31
void * mheap_alloc_with_lock(void *memory, uword size, int locked)
Definition: mem_dlmalloc.c:429
static void acl_plugin_print_pae(vlib_main_t *vm, int j, applied_hash_ace_entry_t *pae)
Definition: hash_lookup.c:1281
#define MHEAP_FLAG_VALIDATE
acl_main_t acl_main
Definition: acl.c:57
u32 collision_head_ae_index
static void acl_plugin_print_applied_mask_info(vlib_main_t *vm, int j, hash_applied_mask_info_t *mi)
Definition: hash_lookup.c:1294
#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:205
static u32 find_mask_type_index(acl_main_t *am, fa_5tuple_t *mask)
Definition: hash_lookup.c:262
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
u8 is_nonfirst_fragment
Definition: fa_node.h:35
acl_lookup_context_t * acl_lookup_contexts
Definition: acl.h:138
uword hash_lookup_mheap_size
Definition: acl.h:148
#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:198
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:286
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:147
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
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
static void make_ip6_address_mask(ip6_address_t *addr, u8 prefix_len)
Definition: hash_lookup.c:1014
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
static void set_collision_head_ae_index(applied_hash_ace_entry_t **applied_hash_aces, collision_match_rule_t *colliding_rules, u32 new_index)
Definition: hash_lookup.c:790
void acl_plugin_show_tables_acl_hash_info(u32 acl_index)
Definition: hash_lookup.c:1243
void vlib_cli_output(vlib_main_t *vm, char *fmt,...)
Definition: cli.c:725
acl_list_t * acls
Definition: acl.h:140
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:313