Line data Source code
1 : /*
2 : * Copyright (c) 2016 Cisco and/or its affiliates.
3 : * Licensed under the Apache License, Version 2.0 (the "License");
4 : * you may not use this file except in compliance with the License.
5 : * You may obtain a copy of the License at:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
9 : * Unless required by applicable law or agreed to in writing, software
10 : * distributed under the License is distributed on an "AS IS" BASIS,
11 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 : * See the License for the specific language governing permissions and
13 : * limitations under the License.
14 : */
15 :
16 : #include <lb/lb.h>
17 : #include <vnet/plugin/plugin.h>
18 : #include <vpp/app/version.h>
19 : #include <vnet/api_errno.h>
20 : #include <vnet/udp/udp_local.h>
21 : #include <vppinfra/lock.h>
22 :
23 : //GC runs at most once every so many seconds
24 : #define LB_GARBAGE_RUN 60
25 :
26 : //After so many seconds. It is assumed that inter-core race condition will not occur.
27 : #define LB_CONCURRENCY_TIMEOUT 10
28 :
29 : // FIB source for adding routes
30 : static fib_source_t lb_fib_src;
31 :
32 : lb_main_t lb_main;
33 :
34 : #define lb_get_writer_lock() clib_spinlock_lock (&lb_main.writer_lock)
35 : #define lb_put_writer_lock() clib_spinlock_unlock (&lb_main.writer_lock)
36 :
37 : static void lb_as_stack (lb_as_t *as);
38 :
39 :
40 : const static char * const lb_dpo_gre4_ip4[] = { "lb4-gre4" , NULL };
41 : const static char * const lb_dpo_gre4_ip6[] = { "lb6-gre4" , NULL };
42 : const static char* const * const lb_dpo_gre4_nodes[DPO_PROTO_NUM] =
43 : {
44 : [DPO_PROTO_IP4] = lb_dpo_gre4_ip4,
45 : [DPO_PROTO_IP6] = lb_dpo_gre4_ip6,
46 : };
47 :
48 : const static char * const lb_dpo_gre6_ip4[] = { "lb4-gre6" , NULL };
49 : const static char * const lb_dpo_gre6_ip6[] = { "lb6-gre6" , NULL };
50 : const static char* const * const lb_dpo_gre6_nodes[DPO_PROTO_NUM] =
51 : {
52 : [DPO_PROTO_IP4] = lb_dpo_gre6_ip4,
53 : [DPO_PROTO_IP6] = lb_dpo_gre6_ip6,
54 : };
55 :
56 : const static char * const lb_dpo_gre4_ip4_port[] = { "lb4-gre4-port" , NULL };
57 : const static char * const lb_dpo_gre4_ip6_port[] = { "lb6-gre4-port" , NULL };
58 : const static char* const * const lb_dpo_gre4_port_nodes[DPO_PROTO_NUM] =
59 : {
60 : [DPO_PROTO_IP4] = lb_dpo_gre4_ip4_port,
61 : [DPO_PROTO_IP6] = lb_dpo_gre4_ip6_port,
62 : };
63 :
64 : const static char * const lb_dpo_gre6_ip4_port[] = { "lb4-gre6-port" , NULL };
65 : const static char * const lb_dpo_gre6_ip6_port[] = { "lb6-gre6-port" , NULL };
66 : const static char* const * const lb_dpo_gre6_port_nodes[DPO_PROTO_NUM] =
67 : {
68 : [DPO_PROTO_IP4] = lb_dpo_gre6_ip4_port,
69 : [DPO_PROTO_IP6] = lb_dpo_gre6_ip6_port,
70 : };
71 :
72 : const static char * const lb_dpo_l3dsr_ip4[] = {"lb4-l3dsr" , NULL};
73 : const static char* const * const lb_dpo_l3dsr_nodes[DPO_PROTO_NUM] =
74 : {
75 : [DPO_PROTO_IP4] = lb_dpo_l3dsr_ip4,
76 : };
77 :
78 : const static char * const lb_dpo_l3dsr_ip4_port[] = {"lb4-l3dsr-port" , NULL};
79 : const static char* const * const lb_dpo_l3dsr_port_nodes[DPO_PROTO_NUM] =
80 : {
81 : [DPO_PROTO_IP4] = lb_dpo_l3dsr_ip4_port,
82 : };
83 :
84 : const static char * const lb_dpo_nat4_ip4_port[] = { "lb4-nat4-port" , NULL };
85 : const static char* const * const lb_dpo_nat4_port_nodes[DPO_PROTO_NUM] =
86 : {
87 : [DPO_PROTO_IP4] = lb_dpo_nat4_ip4_port,
88 : };
89 :
90 : const static char * const lb_dpo_nat6_ip6_port[] = { "lb6-nat6-port" , NULL };
91 : const static char* const * const lb_dpo_nat6_port_nodes[DPO_PROTO_NUM] =
92 : {
93 : [DPO_PROTO_IP6] = lb_dpo_nat6_ip6_port,
94 : };
95 :
96 : const static char *const lb_dpo_gre4_ip4_sticky[] = { "lb4-gre4-sticky",
97 : NULL };
98 : const static char *const lb_dpo_gre4_ip6_sticky[] = { "lb6-gre4-sticky",
99 : NULL };
100 : const static char *const *const lb_dpo_gre4_sticky_nodes[DPO_PROTO_NUM] = {
101 : [DPO_PROTO_IP4] = lb_dpo_gre4_ip4_sticky,
102 : [DPO_PROTO_IP6] = lb_dpo_gre4_ip6_sticky,
103 : };
104 :
105 : const static char *const lb_dpo_gre6_ip4_sticky[] = { "lb4-gre6-sticky",
106 : NULL };
107 : const static char *const lb_dpo_gre6_ip6_sticky[] = { "lb6-gre6-sticky",
108 : NULL };
109 : const static char *const *const lb_dpo_gre6_sticky_nodes[DPO_PROTO_NUM] = {
110 : [DPO_PROTO_IP4] = lb_dpo_gre6_ip4_sticky,
111 : [DPO_PROTO_IP6] = lb_dpo_gre6_ip6_sticky,
112 : };
113 :
114 : const static char *const lb_dpo_gre4_ip4_port_sticky[] = {
115 : "lb4-gre4-port-sticky", NULL
116 : };
117 : const static char *const lb_dpo_gre4_ip6_port_sticky[] = {
118 : "lb6-gre4-port-sticky", NULL
119 : };
120 : const static char *const
121 : *const lb_dpo_gre4_port_sticky_nodes[DPO_PROTO_NUM] = {
122 : [DPO_PROTO_IP4] = lb_dpo_gre4_ip4_port_sticky,
123 : [DPO_PROTO_IP6] = lb_dpo_gre4_ip6_port_sticky,
124 : };
125 :
126 : const static char *const lb_dpo_gre6_ip4_port_sticky[] = {
127 : "lb4-gre6-port-sticky", NULL
128 : };
129 : const static char *const lb_dpo_gre6_ip6_port_sticky[] = {
130 : "lb6-gre6-port-sticky", NULL
131 : };
132 : const static char *const
133 : *const lb_dpo_gre6_port_sticky_nodes[DPO_PROTO_NUM] = {
134 : [DPO_PROTO_IP4] = lb_dpo_gre6_ip4_port_sticky,
135 : [DPO_PROTO_IP6] = lb_dpo_gre6_ip6_port_sticky,
136 : };
137 :
138 : const static char *const lb_dpo_l3dsr_ip4_sticky[] = { "lb4-l3dsr-sticky",
139 : NULL };
140 : const static char *const *const lb_dpo_l3dsr_sticky_nodes[DPO_PROTO_NUM] = {
141 : [DPO_PROTO_IP4] = lb_dpo_l3dsr_ip4_sticky,
142 : };
143 :
144 : const static char *const lb_dpo_l3dsr_ip4_port_sticky[] = {
145 : "lb4-l3dsr-port-sticky", NULL
146 : };
147 : const static char *const
148 : *const lb_dpo_l3dsr_port_sticky_nodes[DPO_PROTO_NUM] = {
149 : [DPO_PROTO_IP4] = lb_dpo_l3dsr_ip4_port_sticky,
150 : };
151 :
152 : const static char *const lb_dpo_nat4_ip4_port_sticky[] = {
153 : "lb4-nat4-port-sticky", NULL
154 : };
155 : const static char *const
156 : *const lb_dpo_nat4_port_sticky_nodes[DPO_PROTO_NUM] = {
157 : [DPO_PROTO_IP4] = lb_dpo_nat4_ip4_port_sticky,
158 : };
159 :
160 : const static char *const lb_dpo_nat6_ip6_port_sticky[] = {
161 : "lb6-nat6-port-sticky", NULL
162 : };
163 : const static char *const
164 : *const lb_dpo_nat6_port_sticky_nodes[DPO_PROTO_NUM] = {
165 : [DPO_PROTO_IP6] = lb_dpo_nat6_ip6_port_sticky,
166 : };
167 :
168 13 : u32 lb_hash_time_now(vlib_main_t * vm)
169 : {
170 13 : return (u32) (vlib_time_now(vm) + 10000);
171 : }
172 :
173 0 : u8 *format_lb_main (u8 * s, va_list * args)
174 : {
175 0 : vlib_thread_main_t *tm = vlib_get_thread_main();
176 0 : lb_main_t *lbm = &lb_main;
177 0 : s = format(s, "lb_main");
178 0 : s = format(s, " ip4-src-address: %U \n", format_ip4_address, &lbm->ip4_src_address);
179 0 : s = format(s, " ip6-src-address: %U \n", format_ip6_address, &lbm->ip6_src_address);
180 0 : s = format(s, " #vips: %u\n", pool_elts(lbm->vips));
181 0 : s = format(s, " #ass: %u\n", pool_elts(lbm->ass) - 1);
182 :
183 : u32 thread_index;
184 0 : for(thread_index = 0; thread_index < tm->n_vlib_mains; thread_index++ ) {
185 0 : lb_hash_t *h = lbm->per_cpu[thread_index].sticky_ht;
186 0 : if (h) {
187 0 : s = format(s, "core %d\n", thread_index);
188 0 : s = format(s, " timeout: %ds\n", h->timeout);
189 0 : s = format(s, " usage: %d / %d\n", lb_hash_elts(h, lb_hash_time_now(vlib_get_main())), lb_hash_size(h));
190 : }
191 : }
192 :
193 0 : return s;
194 : }
195 :
196 : static char *lb_vip_type_strings[] = {
197 : [LB_VIP_TYPE_IP6_GRE6] = "ip6-gre6",
198 : [LB_VIP_TYPE_IP6_GRE4] = "ip6-gre4",
199 : [LB_VIP_TYPE_IP4_GRE6] = "ip4-gre6",
200 : [LB_VIP_TYPE_IP4_GRE4] = "ip4-gre4",
201 : [LB_VIP_TYPE_IP4_L3DSR] = "ip4-l3dsr",
202 : [LB_VIP_TYPE_IP4_NAT4] = "ip4-nat4",
203 : [LB_VIP_TYPE_IP6_NAT6] = "ip6-nat6",
204 : };
205 :
206 1391 : u8 *format_lb_vip_type (u8 * s, va_list * args)
207 : {
208 1391 : lb_vip_type_t vipt = va_arg (*args, lb_vip_type_t);
209 : u32 i;
210 5149 : for (i=0; i<LB_VIP_N_TYPES; i++)
211 5149 : if (vipt == i)
212 1391 : return format(s, lb_vip_type_strings[i]);
213 0 : return format(s, "_WRONG_TYPE_");
214 : }
215 :
216 0 : uword unformat_lb_vip_type (unformat_input_t * input, va_list * args)
217 : {
218 0 : lb_vip_type_t *vipt = va_arg (*args, lb_vip_type_t *);
219 : u32 i;
220 0 : for (i=0; i<LB_VIP_N_TYPES; i++)
221 0 : if (unformat(input, lb_vip_type_strings[i])) {
222 0 : *vipt = i;
223 0 : return 1;
224 : }
225 0 : return 0;
226 : }
227 :
228 1300 : u8 *format_lb_vip (u8 * s, va_list * args)
229 : {
230 1300 : lb_vip_t *vip = va_arg (*args, lb_vip_t *);
231 1300 : s = format(s, "%U %U new_size:%u #as:%u%s",
232 1300 : format_lb_vip_type, vip->type,
233 1300 : format_ip46_prefix, &vip->prefix, vip->plen, IP46_TYPE_ANY,
234 1300 : vip->new_flow_table_mask + 1,
235 1300 : pool_elts(vip->as_indexes),
236 1300 : (vip->flags & LB_VIP_FLAGS_USED)?"":" removed");
237 :
238 1300 : if (vip->port != 0)
239 : {
240 800 : s = format(s, " protocol:%u port:%u ", vip->protocol, vip->port);
241 : }
242 :
243 1300 : if (vip->type == LB_VIP_TYPE_IP4_L3DSR)
244 : {
245 300 : s = format(s, " dscp:%u", vip->encap_args.dscp);
246 : }
247 1000 : else if ((vip->type == LB_VIP_TYPE_IP4_NAT4)
248 900 : || (vip->type == LB_VIP_TYPE_IP6_NAT6))
249 : {
250 200 : s = format (s, " type:%s port:%u target_port:%u",
251 200 : (vip->encap_args.srv_type == LB_SRV_TYPE_CLUSTERIP)?"clusterip":
252 : "nodeport",
253 200 : ntohs(vip->port), ntohs(vip->encap_args.target_port));
254 : }
255 :
256 1300 : return s;
257 : }
258 :
259 1300 : u8 *format_lb_as (u8 * s, va_list * args)
260 : {
261 1300 : lb_as_t *as = va_arg (*args, lb_as_t *);
262 1300 : return format(s, "%U %s", format_ip46_address,
263 : &as->address, IP46_TYPE_ANY,
264 1300 : (as->flags & LB_AS_FLAGS_USED)?"used":"removed");
265 : }
266 :
267 91 : u8 *format_lb_vip_detailed (u8 * s, va_list * args)
268 : {
269 91 : lb_main_t *lbm = &lb_main;
270 91 : lb_vip_t *vip = va_arg (*args, lb_vip_t *);
271 91 : u32 indent = format_get_indent (s);
272 :
273 : /* clang-format off */
274 182 : s = format(s, "%U %U [%lu] %U%s%s\n"
275 : "%U new_size:%u\n",
276 : format_white_space, indent,
277 91 : format_lb_vip_type, vip->type,
278 91 : vip - lbm->vips,
279 91 : format_ip46_prefix, &vip->prefix, (u32) vip->plen, IP46_TYPE_ANY,
280 91 : lb_vip_is_src_ip_sticky (vip) ? " src_ip_sticky" : "",
281 91 : (vip->flags & LB_VIP_FLAGS_USED)?"":" removed",
282 : format_white_space, indent,
283 91 : vip->new_flow_table_mask + 1);
284 : /* clang-format on */
285 :
286 91 : if (vip->port != 0)
287 : {
288 50 : s = format(s, "%U protocol:%u port:%u\n",
289 : format_white_space, indent,
290 50 : vip->protocol, vip->port);
291 : }
292 :
293 91 : if (vip->type == LB_VIP_TYPE_IP4_L3DSR)
294 : {
295 24 : s = format(s, "%U dscp:%u\n",
296 : format_white_space, indent,
297 24 : vip->encap_args.dscp);
298 : }
299 67 : else if ((vip->type == LB_VIP_TYPE_IP4_NAT4)
300 61 : || (vip->type == LB_VIP_TYPE_IP6_NAT6))
301 : {
302 7 : s = format (s, "%U type:%s port:%u target_port:%u",
303 : format_white_space, indent,
304 7 : (vip->encap_args.srv_type == LB_SRV_TYPE_CLUSTERIP)?"clusterip":
305 : "nodeport",
306 7 : ntohs(vip->port), ntohs(vip->encap_args.target_port));
307 : }
308 :
309 : //Print counters
310 91 : s = format(s, "%U counters:\n",
311 : format_white_space, indent);
312 : u32 i;
313 455 : for (i=0; i<LB_N_VIP_COUNTERS; i++)
314 364 : s = format(s, "%U %s: %Lu\n",
315 : format_white_space, indent,
316 : lbm->vip_counters[i].name,
317 364 : vlib_get_simple_counter(&lbm->vip_counters[i], vip - lbm->vips));
318 :
319 :
320 91 : s = format(s, "%U #as:%u\n",
321 : format_white_space, indent,
322 91 : pool_elts(vip->as_indexes));
323 :
324 : //Let's count the buckets for each AS
325 91 : u32 *count = 0;
326 91 : vec_validate(count, pool_len(lbm->ass)); //Possibly big alloc for not much...
327 : lb_new_flow_entry_t *nfe;
328 93275 : vec_foreach(nfe, vip->new_flow_table)
329 93184 : count[nfe->as_index]++;
330 :
331 : lb_as_t *as;
332 : u32 *as_index;
333 546 : pool_foreach (as_index, vip->as_indexes) {
334 455 : as = &lbm->ass[*as_index];
335 455 : s = format(s, "%U %U %u buckets %Lu flows dpo:%u %s\n",
336 : format_white_space, indent,
337 : format_ip46_address, &as->address, IP46_TYPE_ANY,
338 455 : count[as - lbm->ass],
339 455 : vlib_refcount_get(&lbm->as_refcount, as - lbm->ass),
340 : as->dpo.dpoi_index,
341 455 : (as->flags & LB_AS_FLAGS_USED)?"used":" removed");
342 : }
343 :
344 91 : vec_free(count);
345 91 : return s;
346 : }
347 :
348 : typedef struct {
349 : u32 as_index;
350 : u32 last;
351 : u32 skip;
352 : } lb_pseudorand_t;
353 :
354 247 : static int lb_pseudorand_compare(void *a, void *b)
355 : {
356 : lb_as_t *asa, *asb;
357 247 : lb_main_t *lbm = &lb_main;
358 247 : asa = &lbm->ass[((lb_pseudorand_t *)a)->as_index];
359 247 : asb = &lbm->ass[((lb_pseudorand_t *)b)->as_index];
360 247 : return memcmp(&asa->address, &asb->address, sizeof(asb->address));
361 : }
362 :
363 1385 : static void lb_vip_garbage_collection(lb_vip_t *vip)
364 : {
365 1385 : lb_main_t *lbm = &lb_main;
366 : lb_snat4_key_t m_key4;
367 : clib_bihash_kv_8_8_t kv4, value4;
368 : lb_snat6_key_t m_key6;
369 : clib_bihash_kv_24_8_t kv6, value6;
370 1385 : lb_snat_mapping_t *m = 0;
371 1385 : CLIB_SPINLOCK_ASSERT_LOCKED (&lbm->writer_lock);
372 :
373 1385 : u32 now = (u32) vlib_time_now(vlib_get_main());
374 1385 : if (!clib_u32_loop_gt(now, vip->last_garbage_collection + LB_GARBAGE_RUN))
375 1385 : return;
376 :
377 0 : vip->last_garbage_collection = now;
378 : lb_as_t *as;
379 : u32 *as_index;
380 0 : pool_foreach (as_index, vip->as_indexes) {
381 0 : as = &lbm->ass[*as_index];
382 0 : if (!(as->flags & LB_AS_FLAGS_USED) && //Not used
383 0 : clib_u32_loop_gt(now, as->last_used + LB_CONCURRENCY_TIMEOUT) &&
384 0 : (vlib_refcount_get(&lbm->as_refcount, as - lbm->ass) == 0))
385 : { //Not referenced
386 :
387 0 : if (lb_vip_is_nat4_port(vip)) {
388 0 : m_key4.addr = as->address.ip4;
389 0 : m_key4.port = vip->encap_args.target_port;
390 0 : m_key4.protocol = 0;
391 0 : m_key4.fib_index = 0;
392 :
393 0 : kv4.key = m_key4.as_u64;
394 0 : if(!clib_bihash_search_8_8(&lbm->mapping_by_as4, &kv4, &value4))
395 0 : m = pool_elt_at_index (lbm->snat_mappings, value4.value);
396 0 : ASSERT (m);
397 :
398 0 : kv4.value = m - lbm->snat_mappings;
399 0 : clib_bihash_add_del_8_8(&lbm->mapping_by_as4, &kv4, 0);
400 0 : pool_put (lbm->snat_mappings, m);
401 0 : } else if (lb_vip_is_nat6_port(vip)) {
402 0 : m_key6.addr.as_u64[0] = as->address.ip6.as_u64[0];
403 0 : m_key6.addr.as_u64[1] = as->address.ip6.as_u64[1];
404 0 : m_key6.port = vip->encap_args.target_port;
405 0 : m_key6.protocol = 0;
406 0 : m_key6.fib_index = 0;
407 :
408 0 : kv6.key[0] = m_key6.as_u64[0];
409 0 : kv6.key[1] = m_key6.as_u64[1];
410 0 : kv6.key[2] = m_key6.as_u64[2];
411 :
412 0 : if (!clib_bihash_search_24_8 (&lbm->mapping_by_as6, &kv6, &value6))
413 0 : m = pool_elt_at_index (lbm->snat_mappings, value6.value);
414 0 : ASSERT (m);
415 :
416 0 : kv6.value = m - lbm->snat_mappings;
417 0 : clib_bihash_add_del_24_8(&lbm->mapping_by_as6, &kv6, 0);
418 0 : pool_put (lbm->snat_mappings, m);
419 : }
420 0 : fib_entry_child_remove(as->next_hop_fib_entry_index,
421 : as->next_hop_child_index);
422 0 : fib_table_entry_delete_index(as->next_hop_fib_entry_index,
423 : FIB_SOURCE_RR);
424 0 : as->next_hop_fib_entry_index = FIB_NODE_INDEX_INVALID;
425 :
426 0 : pool_put(vip->as_indexes, as_index);
427 0 : pool_put(lbm->ass, as);
428 : }
429 : }
430 : }
431 :
432 160 : void lb_garbage_collection()
433 : {
434 160 : lb_main_t *lbm = &lb_main;
435 160 : lb_get_writer_lock();
436 : lb_vip_t *vip;
437 160 : u32 *to_be_removed_vips = 0, *i;
438 1401 : pool_foreach (vip, lbm->vips) {
439 1241 : lb_vip_garbage_collection(vip);
440 :
441 2177 : if (!(vip->flags & LB_VIP_FLAGS_USED) &&
442 936 : (pool_elts(vip->as_indexes) == 0)) {
443 0 : vec_add1(to_be_removed_vips, vip - lbm->vips);
444 : }
445 : }
446 :
447 160 : vec_foreach(i, to_be_removed_vips) {
448 0 : vip = &lbm->vips[*i];
449 0 : pool_put(lbm->vips, vip);
450 0 : pool_free(vip->as_indexes);
451 : }
452 :
453 160 : vec_free(to_be_removed_vips);
454 160 : lb_put_writer_lock();
455 160 : }
456 :
457 718 : static void lb_vip_update_new_flow_table(lb_vip_t *vip)
458 : {
459 718 : lb_main_t *lbm = &lb_main;
460 : lb_new_flow_entry_t *old_table;
461 : u32 i, *as_index;
462 718 : lb_new_flow_entry_t *new_flow_table = 0;
463 : lb_as_t *as;
464 718 : lb_pseudorand_t *pr, *sort_arr = 0;
465 :
466 718 : CLIB_SPINLOCK_ASSERT_LOCKED (&lbm->writer_lock); // We must have the lock
467 :
468 : //Check if some AS is configured or not
469 718 : i = 0;
470 978 : pool_foreach (as_index, vip->as_indexes) {
471 378 : as = &lbm->ass[*as_index];
472 378 : if (as->flags & LB_AS_FLAGS_USED) { //Not used anymore
473 118 : i = 1;
474 118 : goto out; //Not sure 'break' works in this macro-loop
475 : }
476 : }
477 :
478 600 : out:
479 718 : if (i == 0) {
480 : //Only the default. i.e. no AS
481 600 : vec_validate(new_flow_table, vip->new_flow_table_mask);
482 43143 : for (i=0; i<vec_len(new_flow_table); i++)
483 42543 : new_flow_table[i].as_index = 0;
484 :
485 600 : goto finished;
486 : }
487 :
488 : //First, let's sort the ASs
489 118 : vec_validate (sort_arr, pool_elts (vip->as_indexes) - 1);
490 :
491 118 : i = 0;
492 574 : pool_foreach (as_index, vip->as_indexes) {
493 456 : as = &lbm->ass[*as_index];
494 456 : if (!(as->flags & LB_AS_FLAGS_USED)) //Not used anymore
495 130 : continue;
496 :
497 326 : sort_arr[i].as_index = as - lbm->ass;
498 326 : i++;
499 : }
500 118 : vec_set_len (sort_arr, i);
501 :
502 118 : vec_sort_with_function(sort_arr, lb_pseudorand_compare);
503 :
504 : //Now let's pseudo-randomly generate permutations
505 444 : vec_foreach(pr, sort_arr) {
506 326 : lb_as_t *as = &lbm->ass[pr->as_index];
507 :
508 326 : u64 seed = clib_xxhash(as->address.as_u64[0] ^
509 326 : as->address.as_u64[1]);
510 : /* We have 2^n buckets.
511 : * skip must be prime with 2^n.
512 : * So skip must be odd.
513 : * MagLev actually state that M should be prime,
514 : * but this has a big computation cost (% operation).
515 : * Using 2^n is more better (& operation).
516 : */
517 326 : pr->skip = ((seed & 0xffffffff) | 1) & vip->new_flow_table_mask;
518 326 : pr->last = (seed >> 32) & vip->new_flow_table_mask;
519 : }
520 :
521 : //Let's create a new flow table
522 118 : vec_validate(new_flow_table, vip->new_flow_table_mask);
523 120950 : for (i=0; i<vec_len(new_flow_table); i++)
524 120832 : new_flow_table[i].as_index = 0;
525 :
526 118 : u32 done = 0;
527 : while (1) {
528 179887 : vec_foreach(pr, sort_arr) {
529 162065 : while (1) {
530 282897 : u32 last = pr->last;
531 282897 : pr->last = (pr->last + pr->skip) & vip->new_flow_table_mask;
532 282897 : if (new_flow_table[last].as_index == 0) {
533 120832 : new_flow_table[last].as_index = pr->as_index;
534 120832 : break;
535 : }
536 : }
537 120832 : done++;
538 120832 : if (done == vec_len(new_flow_table))
539 118 : goto finished;
540 : }
541 : }
542 :
543 718 : finished:
544 718 : vec_free(sort_arr);
545 :
546 718 : old_table = vip->new_flow_table;
547 718 : vip->new_flow_table = new_flow_table;
548 718 : vec_free(old_table);
549 718 : }
550 :
551 1 : int lb_conf(ip4_address_t *ip4_address, ip6_address_t *ip6_address,
552 : u32 per_cpu_sticky_buckets, u32 flow_timeout)
553 : {
554 1 : lb_main_t *lbm = &lb_main;
555 :
556 1 : if (!is_pow2(per_cpu_sticky_buckets))
557 0 : return VNET_API_ERROR_INVALID_MEMORY_SIZE;
558 :
559 1 : lb_get_writer_lock(); //Not exactly necessary but just a reminder that it exists for my future self
560 1 : lbm->ip4_src_address = *ip4_address;
561 1 : lbm->ip6_src_address = *ip6_address;
562 1 : lbm->per_cpu_sticky_buckets = per_cpu_sticky_buckets;
563 1 : lbm->flow_timeout = flow_timeout;
564 1 : lb_put_writer_lock();
565 1 : return 0;
566 : }
567 :
568 :
569 :
570 : static
571 199 : int lb_vip_port_find_index(ip46_address_t *prefix, u8 plen,
572 : u8 protocol, u16 port,
573 : lb_lkp_type_t lkp_type,
574 : u32 *vip_index)
575 : {
576 199 : lb_main_t *lbm = &lb_main;
577 : lb_vip_t *vip;
578 : /* This must be called with the lock owned */
579 199 : CLIB_SPINLOCK_ASSERT_LOCKED (&lbm->writer_lock);
580 199 : ip46_prefix_normalize(prefix, plen);
581 1590 : pool_foreach (vip, lbm->vips) {
582 1536 : if ((vip->flags & LB_AS_FLAGS_USED) &&
583 360 : vip->plen == plen &&
584 161 : vip->prefix.as_u64[0] == prefix->as_u64[0] &&
585 161 : vip->prefix.as_u64[1] == prefix->as_u64[1])
586 : {
587 161 : if((lkp_type == LB_LKP_SAME_IP_PORT &&
588 145 : vip->protocol == protocol &&
589 161 : vip->port == port) ||
590 0 : (lkp_type == LB_LKP_ALL_PORT_IP &&
591 16 : vip->port == 0) ||
592 16 : (lkp_type == LB_LKP_DIFF_IP_PORT &&
593 16 : (vip->protocol != protocol ||
594 16 : vip->port != port) ) )
595 : {
596 145 : *vip_index = vip - lbm->vips;
597 145 : return 0;
598 : }
599 : }
600 : }
601 54 : return VNET_API_ERROR_NO_SUCH_ENTRY;
602 : }
603 :
604 : static
605 160 : int lb_vip_port_find_index_with_lock(ip46_address_t *prefix, u8 plen,
606 : u8 protocol, u16 port, u32 *vip_index)
607 : {
608 160 : return lb_vip_port_find_index(prefix, plen, protocol, port,
609 : LB_LKP_SAME_IP_PORT, vip_index);
610 : }
611 :
612 : static
613 8 : int lb_vip_port_find_all_port_vip(ip46_address_t *prefix, u8 plen,
614 : u32 *vip_index)
615 : {
616 8 : return lb_vip_port_find_index(prefix, plen, ~0, 0,
617 : LB_LKP_ALL_PORT_IP, vip_index);
618 : }
619 :
620 : /* Find out per-port-vip entry with different protocol and port */
621 : static
622 31 : int lb_vip_port_find_diff_port(ip46_address_t *prefix, u8 plen,
623 : u8 protocol, u16 port, u32 *vip_index)
624 : {
625 31 : return lb_vip_port_find_index(prefix, plen, protocol, port,
626 : LB_LKP_DIFF_IP_PORT, vip_index);
627 : }
628 :
629 145 : int lb_vip_find_index(ip46_address_t *prefix, u8 plen, u8 protocol,
630 : u16 port, u32 *vip_index)
631 : {
632 : int ret;
633 145 : lb_get_writer_lock();
634 145 : ret = lb_vip_port_find_index_with_lock(prefix, plen,
635 : protocol, port, vip_index);
636 145 : lb_put_writer_lock();
637 145 : return ret;
638 : }
639 :
640 196 : static int lb_as_find_index_vip(lb_vip_t *vip, ip46_address_t *address, u32 *as_index)
641 : {
642 196 : lb_main_t *lbm = &lb_main;
643 : /* This must be called with the lock owned */
644 196 : CLIB_SPINLOCK_ASSERT_LOCKED (&lbm->writer_lock);
645 : lb_as_t *as;
646 : u32 *asi;
647 586 : pool_foreach (asi, vip->as_indexes) {
648 520 : as = &lbm->ass[*asi];
649 520 : if (as->vip_index == (vip - lbm->vips) &&
650 520 : as->address.as_u64[0] == address->as_u64[0] &&
651 520 : as->address.as_u64[1] == address->as_u64[1])
652 : {
653 130 : *as_index = as - lbm->ass;
654 130 : return 0;
655 : }
656 : }
657 66 : return -1;
658 : }
659 :
660 66 : int lb_vip_add_ass(u32 vip_index, ip46_address_t *addresses, u32 n)
661 : {
662 66 : lb_main_t *lbm = &lb_main;
663 66 : lb_get_writer_lock();
664 : lb_vip_t *vip;
665 66 : if (!(vip = lb_vip_get_by_index(vip_index))) {
666 0 : lb_put_writer_lock();
667 0 : return VNET_API_ERROR_NO_SUCH_ENTRY;
668 : }
669 :
670 66 : ip46_type_t type = lb_encap_is_ip4(vip)?IP46_TYPE_IP4:IP46_TYPE_IP6;
671 66 : u32 *to_be_added = 0;
672 66 : u32 *to_be_updated = 0;
673 : u32 i;
674 : u32 *ip;
675 : lb_snat_mapping_t *m;
676 :
677 : //Sanity check
678 132 : while (n--) {
679 :
680 66 : if (!lb_as_find_index_vip(vip, &addresses[n], &i)) {
681 0 : if (lbm->ass[i].flags & LB_AS_FLAGS_USED) {
682 0 : vec_free(to_be_added);
683 0 : vec_free(to_be_updated);
684 0 : lb_put_writer_lock();
685 0 : return VNET_API_ERROR_VALUE_EXIST;
686 : }
687 0 : vec_add1(to_be_updated, i);
688 0 : goto next;
689 : }
690 :
691 66 : if (ip46_address_type(&addresses[n]) != type) {
692 0 : vec_free(to_be_added);
693 0 : vec_free(to_be_updated);
694 0 : lb_put_writer_lock();
695 0 : return VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
696 : }
697 :
698 66 : if (n) {
699 0 : u32 n2 = n;
700 0 : while(n2--) //Check for duplicates
701 0 : if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] &&
702 0 : addresses[n2].as_u64[1] == addresses[n].as_u64[1])
703 0 : goto next;
704 : }
705 :
706 66 : vec_add1(to_be_added, n);
707 :
708 66 : next:
709 66 : continue;
710 : }
711 :
712 : //Update reused ASs
713 66 : vec_foreach(ip, to_be_updated) {
714 0 : lbm->ass[*ip].flags = LB_AS_FLAGS_USED;
715 : }
716 66 : vec_free(to_be_updated);
717 :
718 : //Create those who have to be created
719 132 : vec_foreach(ip, to_be_added) {
720 : lb_as_t *as;
721 : u32 *as_index;
722 66 : pool_get(lbm->ass, as);
723 66 : as->address = addresses[*ip];
724 66 : as->flags = LB_AS_FLAGS_USED;
725 66 : as->vip_index = vip_index;
726 66 : pool_get(vip->as_indexes, as_index);
727 66 : *as_index = as - lbm->ass;
728 :
729 : /*
730 : * become a child of the FIB entry
731 : * so we are informed when its forwarding changes
732 : */
733 66 : fib_prefix_t nh = {};
734 66 : if (lb_encap_is_ip4(vip)) {
735 40 : nh.fp_addr.ip4 = as->address.ip4;
736 40 : nh.fp_len = 32;
737 40 : nh.fp_proto = FIB_PROTOCOL_IP4;
738 : } else {
739 26 : nh.fp_addr.ip6 = as->address.ip6;
740 26 : nh.fp_len = 128;
741 26 : nh.fp_proto = FIB_PROTOCOL_IP6;
742 : }
743 :
744 132 : as->next_hop_fib_entry_index =
745 66 : fib_table_entry_special_add(0,
746 : &nh,
747 : FIB_SOURCE_RR,
748 : FIB_ENTRY_FLAG_NONE);
749 132 : as->next_hop_child_index =
750 66 : fib_entry_child_add(as->next_hop_fib_entry_index,
751 66 : lbm->fib_node_type,
752 66 : as - lbm->ass);
753 :
754 66 : lb_as_stack(as);
755 :
756 66 : if ( lb_vip_is_nat4_port(vip) || lb_vip_is_nat6_port(vip) )
757 : {
758 : /* Add SNAT static mapping */
759 10 : pool_get (lbm->snat_mappings, m);
760 10 : clib_memset (m, 0, sizeof (*m));
761 10 : if (lb_vip_is_nat4_port(vip)) {
762 : lb_snat4_key_t m_key4;
763 : clib_bihash_kv_8_8_t kv4;
764 5 : m_key4.addr = as->address.ip4;
765 5 : m_key4.port = vip->encap_args.target_port;
766 5 : m_key4.protocol = 0;
767 5 : m_key4.fib_index = 0;
768 :
769 5 : if (vip->encap_args.srv_type == LB_SRV_TYPE_CLUSTERIP)
770 : {
771 5 : m->src_ip.ip4 = vip->prefix.ip4;
772 : }
773 0 : else if (vip->encap_args.srv_type == LB_SRV_TYPE_NODEPORT)
774 : {
775 0 : m->src_ip.ip4 = lbm->ip4_src_address;
776 : }
777 5 : m->src_ip_is_ipv6 = 0;
778 5 : m->as_ip.ip4 = as->address.ip4;
779 5 : m->as_ip_is_ipv6 = 0;
780 5 : m->src_port = vip->port;
781 5 : m->target_port = vip->encap_args.target_port;
782 5 : m->vrf_id = 0;
783 5 : m->fib_index = 0;
784 :
785 5 : kv4.key = m_key4.as_u64;
786 5 : kv4.value = m - lbm->snat_mappings;
787 5 : clib_bihash_add_del_8_8(&lbm->mapping_by_as4, &kv4, 1);
788 : } else {
789 : lb_snat6_key_t m_key6;
790 : clib_bihash_kv_24_8_t kv6;
791 5 : m_key6.addr.as_u64[0] = as->address.ip6.as_u64[0];
792 5 : m_key6.addr.as_u64[1] = as->address.ip6.as_u64[1];
793 5 : m_key6.port = vip->encap_args.target_port;
794 5 : m_key6.protocol = 0;
795 5 : m_key6.fib_index = 0;
796 :
797 5 : if (vip->encap_args.srv_type == LB_SRV_TYPE_CLUSTERIP)
798 : {
799 5 : m->src_ip.ip6.as_u64[0] = vip->prefix.ip6.as_u64[0];
800 5 : m->src_ip.ip6.as_u64[1] = vip->prefix.ip6.as_u64[1];
801 : }
802 0 : else if (vip->encap_args.srv_type == LB_SRV_TYPE_NODEPORT)
803 : {
804 0 : m->src_ip.ip6.as_u64[0] = lbm->ip6_src_address.as_u64[0];
805 0 : m->src_ip.ip6.as_u64[1] = lbm->ip6_src_address.as_u64[1];
806 : }
807 5 : m->src_ip_is_ipv6 = 1;
808 5 : m->as_ip.ip6.as_u64[0] = as->address.ip6.as_u64[0];
809 5 : m->as_ip.ip6.as_u64[1] = as->address.ip6.as_u64[1];
810 5 : m->as_ip_is_ipv6 = 1;
811 5 : m->src_port = vip->port;
812 5 : m->target_port = vip->encap_args.target_port;
813 5 : m->vrf_id = 0;
814 5 : m->fib_index = 0;
815 :
816 5 : kv6.key[0] = m_key6.as_u64[0];
817 5 : kv6.key[1] = m_key6.as_u64[1];
818 5 : kv6.key[2] = m_key6.as_u64[2];
819 5 : kv6.value = m - lbm->snat_mappings;
820 5 : clib_bihash_add_del_24_8(&lbm->mapping_by_as6, &kv6, 1);
821 : }
822 : }
823 : }
824 66 : vec_free(to_be_added);
825 :
826 : //Recompute flows
827 66 : lb_vip_update_new_flow_table(vip);
828 :
829 : //Garbage collection maybe
830 66 : lb_vip_garbage_collection(vip);
831 :
832 66 : lb_put_writer_lock();
833 66 : return 0;
834 : }
835 :
836 : int
837 13 : lb_flush_vip_as (u32 vip_index, u32 as_index)
838 : {
839 : u32 thread_index;
840 13 : vlib_thread_main_t *tm = vlib_get_thread_main();
841 13 : lb_main_t *lbm = &lb_main;
842 :
843 26 : for(thread_index = 0; thread_index < tm->n_vlib_mains; thread_index++ ) {
844 13 : lb_hash_t *h = lbm->per_cpu[thread_index].sticky_ht;
845 13 : if (h != NULL) {
846 : u32 i;
847 : lb_hash_bucket_t *b;
848 :
849 66573 : lb_hash_foreach_entry(h, b, i) {
850 53248 : if ((vip_index == ~0)
851 0 : || ((b->vip[i] == vip_index) && (as_index == ~0))
852 0 : || ((b->vip[i] == vip_index) && (b->value[i] == as_index)))
853 : {
854 53248 : vlib_refcount_add(&lbm->as_refcount, thread_index, b->value[i], -1);
855 53248 : vlib_refcount_add(&lbm->as_refcount, thread_index, 0, 1);
856 53248 : b->vip[i] = ~0;
857 53248 : b->value[i] = 0;
858 : }
859 : }
860 13 : if (vip_index == ~0)
861 : {
862 13 : lb_hash_free(h);
863 13 : lbm->per_cpu[thread_index].sticky_ht = 0;
864 : }
865 : }
866 : }
867 :
868 13 : return 0;
869 : }
870 :
871 78 : int lb_vip_del_ass_withlock(u32 vip_index, ip46_address_t *addresses, u32 n,
872 : u8 flush)
873 : {
874 78 : lb_main_t *lbm = &lb_main;
875 78 : u32 now = (u32) vlib_time_now(vlib_get_main());
876 78 : u32 *ip = 0;
877 78 : u32 as_index = 0;
878 :
879 : lb_vip_t *vip;
880 78 : if (!(vip = lb_vip_get_by_index(vip_index))) {
881 0 : return VNET_API_ERROR_NO_SUCH_ENTRY;
882 : }
883 :
884 78 : u32 *indexes = NULL;
885 208 : while (n--) {
886 130 : if (lb_as_find_index_vip(vip, &addresses[n], &as_index)) {
887 0 : vec_free(indexes);
888 0 : return VNET_API_ERROR_NO_SUCH_ENTRY;
889 : }
890 :
891 130 : if (n) { //Check for duplicates
892 52 : u32 n2 = n - 1;
893 130 : while(n2--) {
894 78 : if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] &&
895 78 : addresses[n2].as_u64[1] == addresses[n].as_u64[1])
896 0 : goto next;
897 : }
898 : }
899 :
900 130 : vec_add1(indexes, as_index);
901 130 : next:
902 130 : continue;
903 : }
904 :
905 : //Garbage collection maybe
906 78 : lb_vip_garbage_collection(vip);
907 :
908 78 : if (indexes != NULL) {
909 208 : vec_foreach(ip, indexes) {
910 130 : lbm->ass[*ip].flags &= ~LB_AS_FLAGS_USED;
911 130 : lbm->ass[*ip].last_used = now;
912 :
913 130 : if(flush)
914 : {
915 : /* flush flow table for deleted ASs*/
916 0 : lb_flush_vip_as(vip_index, *ip);
917 : }
918 : }
919 :
920 : //Recompute flows
921 78 : lb_vip_update_new_flow_table(vip);
922 : }
923 :
924 78 : vec_free(indexes);
925 78 : return 0;
926 : }
927 :
928 65 : int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n, u8 flush)
929 : {
930 65 : lb_get_writer_lock();
931 65 : int ret = lb_vip_del_ass_withlock(vip_index, addresses, n, flush);
932 65 : lb_put_writer_lock();
933 :
934 65 : return ret;
935 : }
936 :
937 : static int
938 8 : lb_vip_prefix_index_alloc (lb_main_t *lbm)
939 : {
940 : /*
941 : * Check for dynamically allocated instance number.
942 : */
943 : u32 bit;
944 :
945 8 : bit = clib_bitmap_first_clear (lbm->vip_prefix_indexes);
946 :
947 8 : lbm->vip_prefix_indexes = clib_bitmap_set(lbm->vip_prefix_indexes, bit, 1);
948 :
949 8 : return bit;
950 : }
951 :
952 : static int
953 8 : lb_vip_prefix_index_free (lb_main_t *lbm, u32 instance)
954 : {
955 :
956 8 : if (clib_bitmap_get (lbm->vip_prefix_indexes, instance) == 0)
957 : {
958 0 : return -1;
959 : }
960 :
961 8 : lbm->vip_prefix_indexes = clib_bitmap_set (lbm->vip_prefix_indexes,
962 : instance, 0);
963 :
964 8 : return 0;
965 : }
966 :
967 : /**
968 : * Add the VIP adjacency to the ip4 or ip6 fib
969 : */
970 15 : static void lb_vip_add_adjacency(lb_main_t *lbm, lb_vip_t *vip,
971 : u32 *vip_prefix_index)
972 : {
973 15 : dpo_proto_t proto = 0;
974 15 : dpo_type_t dpo_type = 0;
975 15 : u32 vip_idx = 0;
976 :
977 15 : if (vip->port != 0)
978 : {
979 : /* for per-port vip, if VIP adjacency has been added,
980 : * no need to add adjacency. */
981 8 : if (!lb_vip_port_find_diff_port(&(vip->prefix), vip->plen,
982 8 : vip->protocol, vip->port, &vip_idx))
983 : {
984 0 : lb_vip_t *exists_vip = lb_vip_get_by_index(vip_idx);
985 0 : *vip_prefix_index = exists_vip ? exists_vip->vip_prefix_index : ~0;
986 0 : return;
987 : }
988 :
989 : /* Allocate an index for per-port vip */
990 8 : *vip_prefix_index = lb_vip_prefix_index_alloc(lbm);
991 : }
992 : else
993 : {
994 7 : *vip_prefix_index = vip - lbm->vips;
995 : }
996 :
997 15 : dpo_id_t dpo = DPO_INVALID;
998 15 : fib_prefix_t pfx = {};
999 15 : if (lb_vip_is_ip4(vip->type)) {
1000 8 : pfx.fp_addr.ip4 = vip->prefix.ip4;
1001 8 : pfx.fp_len = vip->plen - 96;
1002 8 : pfx.fp_proto = FIB_PROTOCOL_IP4;
1003 8 : proto = DPO_PROTO_IP4;
1004 : } else {
1005 7 : pfx.fp_addr.ip6 = vip->prefix.ip6;
1006 7 : pfx.fp_len = vip->plen;
1007 7 : pfx.fp_proto = FIB_PROTOCOL_IP6;
1008 7 : proto = DPO_PROTO_IP6;
1009 : }
1010 :
1011 15 : if (lb_vip_is_gre4(vip))
1012 2 : dpo_type = lbm->dpo_gre4_type;
1013 13 : else if (lb_vip_is_gre6(vip))
1014 4 : dpo_type = lbm->dpo_gre6_type;
1015 9 : else if (lb_vip_is_gre4_port(vip))
1016 2 : dpo_type = lbm->dpo_gre4_port_type;
1017 7 : else if (lb_vip_is_gre6_port(vip))
1018 2 : dpo_type = lbm->dpo_gre6_port_type;
1019 5 : else if (lb_vip_is_l3dsr(vip))
1020 1 : dpo_type = lbm->dpo_l3dsr_type;
1021 4 : else if (lb_vip_is_l3dsr_port(vip))
1022 1 : dpo_type = lbm->dpo_l3dsr_port_type;
1023 3 : else if(lb_vip_is_nat4_port(vip))
1024 1 : dpo_type = lbm->dpo_nat4_port_type;
1025 2 : else if (lb_vip_is_nat6_port(vip))
1026 1 : dpo_type = lbm->dpo_nat6_port_type;
1027 1 : else if (lb_vip_is_gre4_sticky (vip))
1028 0 : dpo_type = lbm->dpo_gre4_sticky_type;
1029 1 : else if (lb_vip_is_gre6_sticky (vip))
1030 0 : dpo_type = lbm->dpo_gre6_sticky_type;
1031 1 : else if (lb_vip_is_gre4_port_sticky (vip))
1032 0 : dpo_type = lbm->dpo_gre4_port_sticky_type;
1033 1 : else if (lb_vip_is_gre6_port_sticky (vip))
1034 0 : dpo_type = lbm->dpo_gre6_port_sticky_type;
1035 1 : else if (lb_vip_is_l3dsr_sticky (vip))
1036 0 : dpo_type = lbm->dpo_l3dsr_sticky_type;
1037 1 : else if (lb_vip_is_l3dsr_port_sticky (vip))
1038 1 : dpo_type = lbm->dpo_l3dsr_port_sticky_type;
1039 0 : else if (lb_vip_is_nat4_port_sticky (vip))
1040 0 : dpo_type = lbm->dpo_nat4_port_sticky_type;
1041 0 : else if (lb_vip_is_nat6_port_sticky (vip))
1042 0 : dpo_type = lbm->dpo_nat6_port_sticky_type;
1043 :
1044 15 : dpo_set(&dpo, dpo_type, proto, *vip_prefix_index);
1045 15 : fib_table_entry_special_dpo_add(0,
1046 : &pfx,
1047 : lb_fib_src,
1048 : FIB_ENTRY_FLAG_EXCLUSIVE,
1049 : &dpo);
1050 15 : dpo_reset(&dpo);
1051 : }
1052 :
1053 : /**
1054 : * Add the VIP filter entry
1055 : */
1056 8 : static int lb_vip_add_port_filter(lb_main_t *lbm, lb_vip_t *vip,
1057 : u32 vip_prefix_index, u32 vip_idx)
1058 : {
1059 : vip_port_key_t key;
1060 : clib_bihash_kv_8_8_t kv;
1061 :
1062 8 : key.vip_prefix_index = vip_prefix_index;
1063 8 : key.protocol = vip->protocol;
1064 8 : key.port = clib_host_to_net_u16(vip->port);
1065 8 : key.rsv = 0;
1066 :
1067 8 : kv.key = key.as_u64;
1068 8 : kv.value = vip_idx;
1069 8 : clib_bihash_add_del_8_8(&lbm->vip_index_per_port, &kv, 1);
1070 :
1071 8 : return 0;
1072 : }
1073 :
1074 : /**
1075 : * Del the VIP filter entry
1076 : */
1077 8 : static int lb_vip_del_port_filter(lb_main_t *lbm, lb_vip_t *vip)
1078 : {
1079 : vip_port_key_t key;
1080 : clib_bihash_kv_8_8_t kv, value;
1081 8 : lb_vip_t *m = 0;
1082 :
1083 8 : key.vip_prefix_index = vip->vip_prefix_index;
1084 8 : key.protocol = vip->protocol;
1085 8 : key.port = clib_host_to_net_u16(vip->port);
1086 8 : key.rsv = 0;
1087 :
1088 8 : kv.key = key.as_u64;
1089 8 : if(clib_bihash_search_8_8(&lbm->vip_index_per_port, &kv, &value) != 0)
1090 : {
1091 0 : clib_warning("looking up vip_index_per_port failed.");
1092 0 : return VNET_API_ERROR_NO_SUCH_ENTRY;
1093 : }
1094 8 : m = pool_elt_at_index (lbm->vips, value.value);
1095 8 : ASSERT (m);
1096 :
1097 8 : kv.value = m - lbm->vips;
1098 8 : clib_bihash_add_del_8_8(&lbm->vip_index_per_port, &kv, 0);
1099 :
1100 8 : return 0;
1101 : }
1102 :
1103 : /**
1104 : * Deletes the adjacency associated with the VIP
1105 : */
1106 14 : static void lb_vip_del_adjacency(lb_main_t *lbm, lb_vip_t *vip)
1107 : {
1108 14 : fib_prefix_t pfx = {};
1109 14 : u32 vip_idx = 0;
1110 :
1111 14 : if (vip->port != 0)
1112 : {
1113 : /* If this vip adjacency is used by other per-port vip,
1114 : * no need to del this adjacency. */
1115 8 : if (!lb_vip_port_find_diff_port(&(vip->prefix), vip->plen,
1116 8 : vip->protocol, vip->port, &vip_idx))
1117 : {
1118 0 : lb_put_writer_lock();
1119 0 : return;
1120 : }
1121 :
1122 : /* Return vip_prefix_index for per-port vip */
1123 8 : lb_vip_prefix_index_free(lbm, vip->vip_prefix_index);
1124 :
1125 : }
1126 :
1127 14 : if (lb_vip_is_ip4(vip->type)) {
1128 8 : pfx.fp_addr.ip4 = vip->prefix.ip4;
1129 8 : pfx.fp_len = vip->plen - 96;
1130 8 : pfx.fp_proto = FIB_PROTOCOL_IP4;
1131 : } else {
1132 6 : pfx.fp_addr.ip6 = vip->prefix.ip6;
1133 6 : pfx.fp_len = vip->plen;
1134 6 : pfx.fp_proto = FIB_PROTOCOL_IP6;
1135 : }
1136 14 : fib_table_entry_special_remove(0, &pfx, lb_fib_src);
1137 : }
1138 :
1139 15 : int lb_vip_add(lb_vip_add_args_t args, u32 *vip_index)
1140 : {
1141 15 : lb_main_t *lbm = &lb_main;
1142 15 : vlib_main_t *vm = vlib_get_main();
1143 : lb_vip_t *vip;
1144 15 : lb_vip_type_t type = args.type;
1145 15 : u32 vip_prefix_index = 0;
1146 :
1147 15 : lb_get_writer_lock();
1148 15 : ip46_prefix_normalize(&(args.prefix), args.plen);
1149 :
1150 15 : if (!lb_vip_port_find_index_with_lock(&(args.prefix), args.plen,
1151 15 : args.protocol, args.port,
1152 : vip_index))
1153 : {
1154 0 : lb_put_writer_lock();
1155 0 : return VNET_API_ERROR_VALUE_EXIST;
1156 : }
1157 :
1158 : /* Make sure we can't add a per-port VIP entry
1159 : * when there already is an all-port VIP for the same prefix. */
1160 23 : if ((args.port != 0) &&
1161 8 : !lb_vip_port_find_all_port_vip(&(args.prefix), args.plen, vip_index))
1162 : {
1163 0 : lb_put_writer_lock();
1164 0 : return VNET_API_ERROR_VALUE_EXIST;
1165 : }
1166 :
1167 : /* Make sure we can't add a all-port VIP entry
1168 : * when there already is an per-port VIP for the same prefix. */
1169 22 : if ((args.port == 0) &&
1170 7 : !lb_vip_port_find_diff_port(&(args.prefix), args.plen,
1171 7 : args.protocol, args.port, vip_index))
1172 : {
1173 0 : lb_put_writer_lock();
1174 0 : return VNET_API_ERROR_VALUE_EXIST;
1175 : }
1176 :
1177 : /* Make sure all VIP for a given prefix (using different ports) have the same type. */
1178 23 : if ((args.port != 0) &&
1179 8 : !lb_vip_port_find_diff_port(&(args.prefix), args.plen,
1180 8 : args.protocol, args.port, vip_index)
1181 0 : && (args.type != lbm->vips[*vip_index].type))
1182 : {
1183 0 : lb_put_writer_lock();
1184 0 : return VNET_API_ERROR_INVALID_ARGUMENT;
1185 : }
1186 :
1187 15 : if (!is_pow2(args.new_length)) {
1188 0 : lb_put_writer_lock();
1189 0 : return VNET_API_ERROR_INVALID_MEMORY_SIZE;
1190 : }
1191 :
1192 15 : if (ip46_prefix_is_ip4(&(args.prefix), args.plen) &&
1193 6 : !lb_vip_is_ip4(type)) {
1194 0 : lb_put_writer_lock();
1195 0 : return VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
1196 : }
1197 :
1198 15 : if ((!ip46_prefix_is_ip4(&(args.prefix), args.plen)) &&
1199 3 : !lb_vip_is_ip6(type)) {
1200 0 : lb_put_writer_lock();
1201 0 : return VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
1202 : }
1203 :
1204 15 : if ((type == LB_VIP_TYPE_IP4_L3DSR) &&
1205 3 : (args.encap_args.dscp >= 64) )
1206 : {
1207 0 : lb_put_writer_lock();
1208 0 : return VNET_API_ERROR_VALUE_EXIST;
1209 : }
1210 :
1211 : //Allocate
1212 15 : pool_get(lbm->vips, vip);
1213 :
1214 : //Init
1215 15 : memcpy (&(vip->prefix), &(args.prefix), sizeof(args.prefix));
1216 15 : vip->plen = args.plen;
1217 15 : if (args.port != 0)
1218 : {
1219 8 : vip->protocol = args.protocol;
1220 8 : vip->port = args.port;
1221 : }
1222 : else
1223 : {
1224 7 : vip->protocol = (u8)~0;
1225 7 : vip->port = 0;
1226 : }
1227 15 : vip->last_garbage_collection = (u32) vlib_time_now(vlib_get_main());
1228 15 : vip->type = args.type;
1229 :
1230 15 : if (args.type == LB_VIP_TYPE_IP4_L3DSR) {
1231 3 : vip->encap_args.dscp = args.encap_args.dscp;
1232 : }
1233 12 : else if ((args.type == LB_VIP_TYPE_IP4_NAT4)
1234 11 : ||(args.type == LB_VIP_TYPE_IP6_NAT6)) {
1235 2 : vip->encap_args.srv_type = args.encap_args.srv_type;
1236 2 : vip->encap_args.target_port =
1237 2 : clib_host_to_net_u16(args.encap_args.target_port);
1238 : }
1239 :
1240 15 : vip->flags = LB_VIP_FLAGS_USED;
1241 15 : if (args.src_ip_sticky)
1242 : {
1243 1 : vip->flags |= LB_VIP_FLAGS_SRC_IP_STICKY;
1244 : }
1245 15 : vip->as_indexes = 0;
1246 :
1247 : //Validate counters
1248 : u32 i;
1249 75 : for (i = 0; i < LB_N_VIP_COUNTERS; i++) {
1250 60 : vlib_validate_simple_counter(&lbm->vip_counters[i], vip - lbm->vips);
1251 60 : vlib_zero_simple_counter(&lbm->vip_counters[i], vip - lbm->vips);
1252 : }
1253 :
1254 : //Configure new flow table
1255 15 : vip->new_flow_table_mask = args.new_length - 1;
1256 15 : vip->new_flow_table = 0;
1257 :
1258 : //Update flow hash table
1259 15 : lb_vip_update_new_flow_table(vip);
1260 :
1261 : //Create adjacency to direct traffic
1262 15 : lb_vip_add_adjacency(lbm, vip, &vip_prefix_index);
1263 :
1264 15 : if ( (lb_vip_is_nat4_port(vip) || lb_vip_is_nat6_port(vip))
1265 2 : && (args.encap_args.srv_type == LB_SRV_TYPE_NODEPORT) )
1266 : {
1267 : u32 key;
1268 : uword * entry;
1269 :
1270 : //Create maping from nodeport to vip_index
1271 0 : key = clib_host_to_net_u16(args.port);
1272 0 : entry = hash_get_mem (lbm->vip_index_by_nodeport, &key);
1273 0 : if (entry) {
1274 0 : lb_put_writer_lock();
1275 0 : return VNET_API_ERROR_VALUE_EXIST;
1276 : }
1277 :
1278 0 : hash_set_mem (lbm->vip_index_by_nodeport, &key, vip - lbm->vips);
1279 :
1280 : /* receive packets destined to NodeIP:NodePort */
1281 0 : udp_register_dst_port (vm, args.port, lb4_nodeport_node.index, 1);
1282 0 : udp_register_dst_port (vm, args.port, lb6_nodeport_node.index, 0);
1283 : }
1284 :
1285 15 : *vip_index = vip - lbm->vips;
1286 : //Create per-port vip filtering table
1287 15 : if (args.port != 0)
1288 : {
1289 8 : lb_vip_add_port_filter(lbm, vip, vip_prefix_index, *vip_index);
1290 8 : vip->vip_prefix_index = vip_prefix_index;
1291 : }
1292 :
1293 15 : lb_put_writer_lock();
1294 15 : return 0;
1295 : }
1296 :
1297 14 : int lb_vip_del(u32 vip_index)
1298 : {
1299 14 : lb_main_t *lbm = &lb_main;
1300 : lb_vip_t *vip;
1301 14 : int rv = 0;
1302 :
1303 : /* Does not remove default vip, i.e. vip_index = 0 */
1304 14 : if (vip_index == 0)
1305 0 : return VNET_API_ERROR_INVALID_VALUE;
1306 :
1307 14 : lb_get_writer_lock();
1308 14 : if (!(vip = lb_vip_get_by_index(vip_index))) {
1309 0 : lb_put_writer_lock();
1310 0 : return VNET_API_ERROR_NO_SUCH_ENTRY;
1311 : }
1312 :
1313 : //FIXME: This operation is actually not working
1314 : //We will need to remove state before performing this.
1315 :
1316 : {
1317 : //Remove all ASs
1318 14 : ip46_address_t *ass = 0;
1319 : lb_as_t *as;
1320 : u32 *as_index;
1321 :
1322 79 : pool_foreach (as_index, vip->as_indexes) {
1323 65 : as = &lbm->ass[*as_index];
1324 65 : vec_add1(ass, as->address);
1325 : }
1326 14 : if (vec_len(ass))
1327 13 : lb_vip_del_ass_withlock(vip_index, ass, vec_len(ass), 0);
1328 14 : vec_free(ass);
1329 : }
1330 :
1331 : //Delete adjacency
1332 14 : lb_vip_del_adjacency(lbm, vip);
1333 :
1334 : //Delete per-port vip filtering entry
1335 14 : if (vip->port != 0)
1336 : {
1337 8 : rv = lb_vip_del_port_filter(lbm, vip);
1338 : }
1339 :
1340 : //Set the VIP as unused
1341 14 : vip->flags &= ~LB_VIP_FLAGS_USED;
1342 :
1343 14 : lb_put_writer_lock();
1344 14 : return rv;
1345 : }
1346 :
1347 : /* *INDENT-OFF* */
1348 : VLIB_PLUGIN_REGISTER () = {
1349 : .version = VPP_BUILD_VER,
1350 : .description = "Load Balancer (LB)",
1351 : };
1352 : /* *INDENT-ON* */
1353 :
1354 0 : u8 *format_lb_dpo (u8 * s, va_list * va)
1355 : {
1356 0 : index_t index = va_arg (*va, index_t);
1357 0 : CLIB_UNUSED(u32 indent) = va_arg (*va, u32);
1358 0 : lb_main_t *lbm = &lb_main;
1359 0 : lb_vip_t *vip = pool_elt_at_index (lbm->vips, index);
1360 0 : return format (s, "%U", format_lb_vip, vip);
1361 : }
1362 :
1363 90 : static void lb_dpo_lock (dpo_id_t *dpo) {}
1364 87 : static void lb_dpo_unlock (dpo_id_t *dpo) {}
1365 :
1366 : static fib_node_t *
1367 190 : lb_fib_node_get_node (fib_node_index_t index)
1368 : {
1369 190 : lb_main_t *lbm = &lb_main;
1370 190 : lb_as_t *as = pool_elt_at_index (lbm->ass, index);
1371 190 : return (&as->fib_node);
1372 : }
1373 :
1374 : static void
1375 0 : lb_fib_node_last_lock_gone (fib_node_t *node)
1376 : {
1377 0 : }
1378 :
1379 : static lb_as_t *
1380 190 : lb_as_from_fib_node (fib_node_t *node)
1381 : {
1382 190 : return ((lb_as_t*)(((char*)node) -
1383 : STRUCT_OFFSET_OF(lb_as_t, fib_node)));
1384 : }
1385 :
1386 : static void
1387 256 : lb_as_stack (lb_as_t *as)
1388 : {
1389 256 : lb_main_t *lbm = &lb_main;
1390 256 : lb_vip_t *vip = &lbm->vips[as->vip_index];
1391 256 : dpo_type_t dpo_type = 0;
1392 :
1393 256 : if (lb_vip_is_gre4(vip))
1394 50 : dpo_type = lbm->dpo_gre4_type;
1395 206 : else if (lb_vip_is_gre6(vip))
1396 41 : dpo_type = lbm->dpo_gre6_type;
1397 165 : else if (lb_vip_is_gre4_port(vip))
1398 40 : dpo_type = lbm->dpo_gre4_port_type;
1399 125 : else if (lb_vip_is_gre6_port(vip))
1400 30 : dpo_type = lbm->dpo_gre6_port_type;
1401 95 : else if (lb_vip_is_l3dsr(vip))
1402 30 : dpo_type = lbm->dpo_l3dsr_type;
1403 65 : else if (lb_vip_is_l3dsr_port(vip))
1404 25 : dpo_type = lbm->dpo_l3dsr_port_type;
1405 40 : else if(lb_vip_is_nat4_port(vip))
1406 15 : dpo_type = lbm->dpo_nat4_port_type;
1407 25 : else if (lb_vip_is_nat6_port(vip))
1408 5 : dpo_type = lbm->dpo_nat6_port_type;
1409 20 : else if (lb_vip_is_gre4_sticky (vip))
1410 0 : dpo_type = lbm->dpo_gre4_sticky_type;
1411 20 : else if (lb_vip_is_gre6_sticky (vip))
1412 0 : dpo_type = lbm->dpo_gre6_sticky_type;
1413 20 : else if (lb_vip_is_gre4_port_sticky (vip))
1414 0 : dpo_type = lbm->dpo_gre4_port_sticky_type;
1415 20 : else if (lb_vip_is_gre6_port_sticky (vip))
1416 0 : dpo_type = lbm->dpo_gre6_port_sticky_type;
1417 20 : else if (lb_vip_is_l3dsr_sticky (vip))
1418 0 : dpo_type = lbm->dpo_l3dsr_sticky_type;
1419 20 : else if (lb_vip_is_l3dsr_port_sticky (vip))
1420 20 : dpo_type = lbm->dpo_l3dsr_port_sticky_type;
1421 0 : else if (lb_vip_is_nat4_port_sticky (vip))
1422 0 : dpo_type = lbm->dpo_nat4_port_sticky_type;
1423 0 : else if (lb_vip_is_nat6_port_sticky (vip))
1424 0 : dpo_type = lbm->dpo_nat6_port_sticky_type;
1425 :
1426 256 : dpo_stack(dpo_type,
1427 256 : lb_vip_is_ip4(vip->type)?DPO_PROTO_IP4:DPO_PROTO_IP6,
1428 : &as->dpo,
1429 : fib_entry_contribute_ip_forwarding(
1430 : as->next_hop_fib_entry_index));
1431 256 : }
1432 :
1433 : static fib_node_back_walk_rc_t
1434 190 : lb_fib_node_back_walk_notify (fib_node_t *node,
1435 : fib_node_back_walk_ctx_t *ctx)
1436 : {
1437 190 : lb_as_stack(lb_as_from_fib_node(node));
1438 190 : return (FIB_NODE_BACK_WALK_CONTINUE);
1439 : }
1440 :
1441 0 : int lb_nat4_interface_add_del (u32 sw_if_index, int is_del)
1442 : {
1443 0 : if (is_del)
1444 : {
1445 0 : vnet_feature_enable_disable ("ip4-unicast", "lb-nat4-in2out",
1446 : sw_if_index, 0, 0, 0);
1447 : }
1448 : else
1449 : {
1450 0 : vnet_feature_enable_disable ("ip4-unicast", "lb-nat4-in2out",
1451 : sw_if_index, 1, 0, 0);
1452 : }
1453 :
1454 0 : return 0;
1455 : }
1456 :
1457 0 : int lb_nat6_interface_add_del (u32 sw_if_index, int is_del)
1458 : {
1459 0 : if (is_del)
1460 : {
1461 0 : vnet_feature_enable_disable ("ip6-unicast", "lb-nat6-in2out",
1462 : sw_if_index, 0, 0, 0);
1463 : }
1464 : else
1465 : {
1466 0 : vnet_feature_enable_disable ("ip6-unicast", "lb-nat6-in2out",
1467 : sw_if_index, 1, 0, 0);
1468 : }
1469 :
1470 0 : return 0;
1471 : }
1472 :
1473 : clib_error_t *
1474 559 : lb_init (vlib_main_t * vm)
1475 : {
1476 559 : vlib_thread_main_t *tm = vlib_get_thread_main ();
1477 559 : lb_main_t *lbm = &lb_main;
1478 559 : lbm->vnet_main = vnet_get_main ();
1479 559 : lbm->vlib_main = vm;
1480 :
1481 : lb_vip_t *default_vip;
1482 : lb_as_t *default_as;
1483 559 : fib_node_vft_t lb_fib_node_vft = {
1484 : .fnv_get = lb_fib_node_get_node,
1485 : .fnv_last_lock = lb_fib_node_last_lock_gone,
1486 : .fnv_back_walk = lb_fib_node_back_walk_notify,
1487 : };
1488 559 : dpo_vft_t lb_vft = {
1489 : .dv_lock = lb_dpo_lock,
1490 : .dv_unlock = lb_dpo_unlock,
1491 : .dv_format = format_lb_dpo,
1492 : };
1493 :
1494 : //Allocate and init default VIP.
1495 559 : lbm->vips = 0;
1496 559 : pool_get(lbm->vips, default_vip);
1497 559 : default_vip->new_flow_table_mask = 0;
1498 559 : default_vip->prefix.ip6.as_u64[0] = 0xffffffffffffffffL;
1499 559 : default_vip->prefix.ip6.as_u64[1] = 0xffffffffffffffffL;
1500 559 : default_vip->protocol = ~0;
1501 559 : default_vip->port = 0;
1502 559 : default_vip->flags = LB_VIP_FLAGS_USED;
1503 :
1504 559 : lbm->per_cpu = 0;
1505 559 : vec_validate(lbm->per_cpu, tm->n_vlib_mains - 1);
1506 559 : clib_spinlock_init (&lbm->writer_lock);
1507 559 : lbm->per_cpu_sticky_buckets = LB_DEFAULT_PER_CPU_STICKY_BUCKETS;
1508 559 : lbm->flow_timeout = LB_DEFAULT_FLOW_TIMEOUT;
1509 559 : lbm->ip4_src_address.as_u32 = 0xffffffff;
1510 559 : lbm->ip6_src_address.as_u64[0] = 0xffffffffffffffffL;
1511 559 : lbm->ip6_src_address.as_u64[1] = 0xffffffffffffffffL;
1512 559 : lbm->dpo_gre4_type = dpo_register_new_type(&lb_vft, lb_dpo_gre4_nodes);
1513 559 : lbm->dpo_gre6_type = dpo_register_new_type(&lb_vft, lb_dpo_gre6_nodes);
1514 559 : lbm->dpo_gre4_port_type = dpo_register_new_type(&lb_vft,
1515 : lb_dpo_gre4_port_nodes);
1516 559 : lbm->dpo_gre6_port_type = dpo_register_new_type(&lb_vft,
1517 : lb_dpo_gre6_port_nodes);
1518 559 : lbm->dpo_l3dsr_type = dpo_register_new_type(&lb_vft,
1519 : lb_dpo_l3dsr_nodes);
1520 559 : lbm->dpo_l3dsr_port_type = dpo_register_new_type(&lb_vft,
1521 : lb_dpo_l3dsr_port_nodes);
1522 559 : lbm->dpo_nat4_port_type = dpo_register_new_type(&lb_vft,
1523 : lb_dpo_nat4_port_nodes);
1524 559 : lbm->dpo_nat6_port_type = dpo_register_new_type(&lb_vft,
1525 : lb_dpo_nat6_port_nodes);
1526 559 : lbm->dpo_gre4_sticky_type =
1527 559 : dpo_register_new_type (&lb_vft, lb_dpo_gre4_sticky_nodes);
1528 559 : lbm->dpo_gre6_sticky_type =
1529 559 : dpo_register_new_type (&lb_vft, lb_dpo_gre6_sticky_nodes);
1530 559 : lbm->dpo_gre4_port_sticky_type =
1531 559 : dpo_register_new_type (&lb_vft, lb_dpo_gre4_port_sticky_nodes);
1532 559 : lbm->dpo_gre6_port_sticky_type =
1533 559 : dpo_register_new_type (&lb_vft, lb_dpo_gre6_port_sticky_nodes);
1534 559 : lbm->dpo_l3dsr_sticky_type =
1535 559 : dpo_register_new_type (&lb_vft, lb_dpo_l3dsr_sticky_nodes);
1536 559 : lbm->dpo_l3dsr_port_sticky_type =
1537 559 : dpo_register_new_type (&lb_vft, lb_dpo_l3dsr_port_sticky_nodes);
1538 559 : lbm->dpo_nat4_port_sticky_type =
1539 559 : dpo_register_new_type (&lb_vft, lb_dpo_nat4_port_sticky_nodes);
1540 559 : lbm->dpo_nat6_port_sticky_type =
1541 559 : dpo_register_new_type (&lb_vft, lb_dpo_nat6_port_sticky_nodes);
1542 559 : lbm->fib_node_type = fib_node_register_new_type ("lb", &lb_fib_node_vft);
1543 :
1544 : //Init AS reference counters
1545 559 : vlib_refcount_init(&lbm->as_refcount);
1546 :
1547 : //Allocate and init default AS.
1548 559 : lbm->ass = 0;
1549 559 : pool_get(lbm->ass, default_as);
1550 559 : default_as->flags = 0;
1551 559 : default_as->dpo.dpoi_next_node = LB_NEXT_DROP;
1552 559 : default_as->vip_index = ~0;
1553 559 : default_as->address.ip6.as_u64[0] = 0xffffffffffffffffL;
1554 559 : default_as->address.ip6.as_u64[1] = 0xffffffffffffffffL;
1555 :
1556 : /* Generate a valid flow table for default VIP */
1557 559 : default_vip->as_indexes = NULL;
1558 559 : lb_get_writer_lock();
1559 559 : lb_vip_update_new_flow_table(default_vip);
1560 559 : lb_put_writer_lock();
1561 :
1562 : lbm->vip_index_by_nodeport
1563 559 : = hash_create_mem (0, sizeof(u16), sizeof (uword));
1564 :
1565 559 : clib_bihash_init_8_8 (&lbm->vip_index_per_port,
1566 : "vip_index_per_port", LB_VIP_PER_PORT_BUCKETS,
1567 : LB_VIP_PER_PORT_MEMORY_SIZE);
1568 :
1569 559 : clib_bihash_init_8_8 (&lbm->mapping_by_as4,
1570 : "mapping_by_as4", LB_MAPPING_BUCKETS,
1571 : LB_MAPPING_MEMORY_SIZE);
1572 :
1573 559 : clib_bihash_init_24_8 (&lbm->mapping_by_as6,
1574 : "mapping_by_as6", LB_MAPPING_BUCKETS,
1575 : LB_MAPPING_MEMORY_SIZE);
1576 :
1577 : #define _(a,b,c) lbm->vip_counters[c].name = b;
1578 559 : lb_foreach_vip_counter
1579 : #undef _
1580 :
1581 559 : lb_fib_src = fib_source_allocate("lb",
1582 : FIB_SOURCE_PRIORITY_HI,
1583 : FIB_SOURCE_BH_SIMPLE);
1584 :
1585 559 : return NULL;
1586 : }
1587 :
1588 1119 : VLIB_INIT_FUNCTION (lb_init);
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