diff options
Diffstat (limited to 'plugins/lb-plugin/lb/lb.c')
| -rw-r--r-- | plugins/lb-plugin/lb/lb.c | 844 |
1 files changed, 0 insertions, 844 deletions
diff --git a/plugins/lb-plugin/lb/lb.c b/plugins/lb-plugin/lb/lb.c deleted file mode 100644 index 1d9b987095b..00000000000 --- a/plugins/lb-plugin/lb/lb.c +++ /dev/null @@ -1,844 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <lb/lb.h> -#include <vnet/plugin/plugin.h> -#include <vnet/api_errno.h> - -//GC runs at most once every so many seconds -#define LB_GARBAGE_RUN 60 - -//After so many seconds. It is assumed that inter-core race condition will not occur. -#define LB_CONCURRENCY_TIMEOUT 10 - -lb_main_t lb_main; - -#define lb_get_writer_lock() do {} while(__sync_lock_test_and_set (lb_main.writer_lock, 1)) -#define lb_put_writer_lock() lb_main.writer_lock[0] = 0 - -static void lb_as_stack (lb_as_t *as); - - -const static char * const lb_dpo_gre4_ip4[] = { "lb4-gre4" , NULL }; -const static char * const lb_dpo_gre4_ip6[] = { "lb6-gre4" , NULL }; -const static char* const * const lb_dpo_gre4_nodes[DPO_PROTO_NUM] = - { - [DPO_PROTO_IP4] = lb_dpo_gre4_ip4, - [DPO_PROTO_IP6] = lb_dpo_gre4_ip6, - }; - -const static char * const lb_dpo_gre6_ip4[] = { "lb4-gre6" , NULL }; -const static char * const lb_dpo_gre6_ip6[] = { "lb6-gre6" , NULL }; -const static char* const * const lb_dpo_gre6_nodes[DPO_PROTO_NUM] = - { - [DPO_PROTO_IP4] = lb_dpo_gre6_ip4, - [DPO_PROTO_IP6] = lb_dpo_gre6_ip6, - }; - -u32 lb_hash_time_now(vlib_main_t * vm) -{ - return (u32) (vlib_time_now(vm) + 10000); -} - -u8 *format_lb_main (u8 * s, va_list * args) -{ - vlib_thread_main_t *tm = vlib_get_thread_main(); - lb_main_t *lbm = &lb_main; - s = format(s, "lb_main"); - s = format(s, " ip4-src-address: %U \n", format_ip4_address, &lbm->ip4_src_address); - s = format(s, " ip6-src-address: %U \n", format_ip6_address, &lbm->ip6_src_address); - s = format(s, " #vips: %u\n", pool_elts(lbm->vips)); - s = format(s, " #ass: %u\n", pool_elts(lbm->ass) - 1); - - u32 cpu_index; - for(cpu_index = 0; cpu_index < tm->n_vlib_mains; cpu_index++ ) { - lb_hash_t *h = lbm->per_cpu[cpu_index].sticky_ht; - if (h) { - s = format(s, "core %d\n", cpu_index); - s = format(s, " timeout: %ds\n", h->timeout); - s = format(s, " usage: %d / %d\n", lb_hash_elts(h, lb_hash_time_now(vlib_get_main())), lb_hash_size(h)); - } - } - - return s; -} - -static char *lb_vip_type_strings[] = { - [LB_VIP_TYPE_IP6_GRE6] = "ip6-gre6", - [LB_VIP_TYPE_IP6_GRE4] = "ip6-gre4", - [LB_VIP_TYPE_IP4_GRE6] = "ip4-gre6", - [LB_VIP_TYPE_IP4_GRE4] = "ip4-gre4", -}; - -u8 *format_lb_vip_type (u8 * s, va_list * args) -{ - lb_vip_type_t vipt = va_arg (*args, lb_vip_type_t); - u32 i; - for (i=0; i<LB_VIP_N_TYPES; i++) - if (vipt == i) - return format(s, lb_vip_type_strings[i]); - return format(s, "_WRONG_TYPE_"); -} - -uword unformat_lb_vip_type (unformat_input_t * input, va_list * args) -{ - lb_vip_type_t *vipt = va_arg (*args, lb_vip_type_t *); - u32 i; - for (i=0; i<LB_VIP_N_TYPES; i++) - if (unformat(input, lb_vip_type_strings[i])) { - *vipt = i; - return 1; - } - return 0; -} - -u8 *format_lb_vip (u8 * s, va_list * args) -{ - lb_vip_t *vip = va_arg (*args, lb_vip_t *); - return format(s, "%U %U new_size:%u #as:%u%s", - format_lb_vip_type, vip->type, - format_ip46_prefix, &vip->prefix, vip->plen, IP46_TYPE_ANY, - vip->new_flow_table_mask + 1, - pool_elts(vip->as_indexes), - (vip->flags & LB_VIP_FLAGS_USED)?"":" removed"); -} - -u8 *format_lb_as (u8 * s, va_list * args) -{ - lb_as_t *as = va_arg (*args, lb_as_t *); - return format(s, "%U %s", format_ip46_address, - &as->address, IP46_TYPE_ANY, - (as->flags & LB_AS_FLAGS_USED)?"used":"removed"); -} - -u8 *format_lb_vip_detailed (u8 * s, va_list * args) -{ - lb_main_t *lbm = &lb_main; - lb_vip_t *vip = va_arg (*args, lb_vip_t *); - uword indent = format_get_indent (s); - - s = format(s, "%U %U [%u] %U%s\n" - "%U new_size:%u\n", - format_white_space, indent, - format_lb_vip_type, vip->type, - vip - lbm->vips, format_ip46_prefix, &vip->prefix, vip->plen, IP46_TYPE_ANY, - (vip->flags & LB_VIP_FLAGS_USED)?"":" removed", - format_white_space, indent, - vip->new_flow_table_mask + 1); - - //Print counters - s = format(s, "%U counters:\n", - format_white_space, indent); - u32 i; - for (i=0; i<LB_N_VIP_COUNTERS; i++) - s = format(s, "%U %s: %d\n", - format_white_space, indent, - lbm->vip_counters[i].name, - vlib_get_simple_counter(&lbm->vip_counters[i], vip - lbm->vips)); - - - s = format(s, "%U #as:%u\n", - format_white_space, indent, - pool_elts(vip->as_indexes)); - - //Let's count the buckets for each AS - u32 *count = 0; - vec_validate(count, pool_len(lbm->ass)); //Possibly big alloc for not much... - lb_new_flow_entry_t *nfe; - vec_foreach(nfe, vip->new_flow_table) - count[nfe->as_index]++; - - lb_as_t *as; - u32 *as_index; - pool_foreach(as_index, vip->as_indexes, { - as = &lbm->ass[*as_index]; - s = format(s, "%U %U %d buckets %d flows dpo:%u %s\n", - format_white_space, indent, - format_ip46_address, &as->address, IP46_TYPE_ANY, - count[as - lbm->ass], - vlib_refcount_get(&lbm->as_refcount, as - lbm->ass), - as->dpo.dpoi_index, - (as->flags & LB_AS_FLAGS_USED)?"used":" removed"); - }); - - vec_free(count); - - /* - s = format(s, "%U new flows table:\n", format_white_space, indent); - lb_new_flow_entry_t *nfe; - vec_foreach(nfe, vip->new_flow_table) { - s = format(s, "%U %d: %d\n", format_white_space, indent, nfe - vip->new_flow_table, nfe->as_index); - } - */ - return s; -} - -typedef struct { - u32 as_index; - u32 last; - u32 skip; -} lb_pseudorand_t; - -static int lb_pseudorand_compare(void *a, void *b) -{ - lb_as_t *asa, *asb; - lb_main_t *lbm = &lb_main; - asa = &lbm->ass[((lb_pseudorand_t *)a)->as_index]; - asb = &lbm->ass[((lb_pseudorand_t *)b)->as_index]; - return memcmp(&asa->address, &asb->address, sizeof(asb->address)); -} - -static void lb_vip_garbage_collection(lb_vip_t *vip) -{ - lb_main_t *lbm = &lb_main; - ASSERT (lbm->writer_lock[0]); - - u32 now = (u32) vlib_time_now(vlib_get_main()); - if (!clib_u32_loop_gt(now, vip->last_garbage_collection + LB_GARBAGE_RUN)) - return; - - vip->last_garbage_collection = now; - lb_as_t *as; - u32 *as_index; - pool_foreach(as_index, vip->as_indexes, { - as = &lbm->ass[*as_index]; - if (!(as->flags & LB_AS_FLAGS_USED) && //Not used - clib_u32_loop_gt(now, as->last_used + LB_CONCURRENCY_TIMEOUT) && //Not recently used - (vlib_refcount_get(&lbm->as_refcount, as - lbm->ass) == 0)) - { //Not referenced - fib_entry_child_remove(as->next_hop_fib_entry_index, - as->next_hop_child_index); - fib_table_entry_delete_index(as->next_hop_fib_entry_index, - FIB_SOURCE_RR); - as->next_hop_fib_entry_index = FIB_NODE_INDEX_INVALID; - - pool_put(vip->as_indexes, as_index); - pool_put(lbm->ass, as); - } - }); -} - -void lb_garbage_collection() -{ - lb_main_t *lbm = &lb_main; - lb_get_writer_lock(); - lb_vip_t *vip; - u32 *to_be_removed_vips = 0, *i; - pool_foreach(vip, lbm->vips, { - lb_vip_garbage_collection(vip); - - if (!(vip->flags & LB_VIP_FLAGS_USED) && - (pool_elts(vip->as_indexes) == 0)) { - vec_add1(to_be_removed_vips, vip - lbm->vips); - } - }); - - vec_foreach(i, to_be_removed_vips) { - vip = &lbm->vips[*i]; - pool_put(lbm->vips, vip); - pool_free(vip->as_indexes); - } - - vec_free(to_be_removed_vips); - lb_put_writer_lock(); -} - -static void lb_vip_update_new_flow_table(lb_vip_t *vip) -{ - lb_main_t *lbm = &lb_main; - lb_new_flow_entry_t *old_table; - u32 i, *as_index; - lb_new_flow_entry_t *new_flow_table = 0; - lb_as_t *as; - lb_pseudorand_t *pr, *sort_arr = 0; - u32 count; - - ASSERT (lbm->writer_lock[0]); //We must have the lock - - //Check if some AS is configured or not - i = 0; - pool_foreach(as_index, vip->as_indexes, { - as = &lbm->ass[*as_index]; - if (as->flags & LB_AS_FLAGS_USED) { //Not used anymore - i = 1; - goto out; //Not sure 'break' works in this macro-loop - } - }); - -out: - if (i == 0) { - //Only the default. i.e. no AS - vec_validate(new_flow_table, vip->new_flow_table_mask); - for (i=0; i<vec_len(new_flow_table); i++) - new_flow_table[i].as_index = 0; - - goto finished; - } - - //First, let's sort the ASs - sort_arr = 0; - vec_alloc(sort_arr, pool_elts(vip->as_indexes)); - - i = 0; - pool_foreach(as_index, vip->as_indexes, { - as = &lbm->ass[*as_index]; - if (!(as->flags & LB_AS_FLAGS_USED)) //Not used anymore - continue; - - sort_arr[i].as_index = as - lbm->ass; - i++; - }); - _vec_len(sort_arr) = i; - - vec_sort_with_function(sort_arr, lb_pseudorand_compare); - - //Now let's pseudo-randomly generate permutations - vec_foreach(pr, sort_arr) { - lb_as_t *as = &lbm->ass[pr->as_index]; - - u64 seed = clib_xxhash(as->address.as_u64[0] ^ - as->address.as_u64[1]); - /* We have 2^n buckets. - * skip must be prime with 2^n. - * So skip must be odd. - * MagLev actually state that M should be prime, - * but this has a big computation cost (% operation). - * Using 2^n is more better (& operation). - */ - pr->skip = ((seed & 0xffffffff) | 1) & vip->new_flow_table_mask; - pr->last = (seed >> 32) & vip->new_flow_table_mask; - } - - //Let's create a new flow table - vec_validate(new_flow_table, vip->new_flow_table_mask); - for (i=0; i<vec_len(new_flow_table); i++) - new_flow_table[i].as_index = ~0; - - u32 done = 0; - while (1) { - vec_foreach(pr, sort_arr) { - while (1) { - u32 last = pr->last; - pr->last = (pr->last + pr->skip) & vip->new_flow_table_mask; - if (new_flow_table[last].as_index == ~0) { - new_flow_table[last].as_index = pr->as_index; - break; - } - } - done++; - if (done == vec_len(new_flow_table)) - goto finished; - } - } - - vec_free(sort_arr); - -finished: - -//Count number of changed entries - count = 0; - for (i=0; i<vec_len(new_flow_table); i++) - if (vip->new_flow_table == 0 || - new_flow_table[i].as_index != vip->new_flow_table[i].as_index) - count++; - - old_table = vip->new_flow_table; - vip->new_flow_table = new_flow_table; - vec_free(old_table); -} - -int lb_conf(ip4_address_t *ip4_address, ip6_address_t *ip6_address, - u32 per_cpu_sticky_buckets, u32 flow_timeout) -{ - lb_main_t *lbm = &lb_main; - - if (!is_pow2(per_cpu_sticky_buckets)) - return VNET_API_ERROR_INVALID_MEMORY_SIZE; - - lb_get_writer_lock(); //Not exactly necessary but just a reminder that it exists for my future self - lbm->ip4_src_address = *ip4_address; - lbm->ip6_src_address = *ip6_address; - lbm->per_cpu_sticky_buckets = per_cpu_sticky_buckets; - lbm->flow_timeout = flow_timeout; - lb_put_writer_lock(); - return 0; -} - -static -int lb_vip_find_index_with_lock(ip46_address_t *prefix, u8 plen, u32 *vip_index) -{ - lb_main_t *lbm = &lb_main; - lb_vip_t *vip; - ASSERT (lbm->writer_lock[0]); //This must be called with the lock owned - ip46_prefix_normalize(prefix, plen); - pool_foreach(vip, lbm->vips, { - if ((vip->flags & LB_AS_FLAGS_USED) && - vip->plen == plen && - vip->prefix.as_u64[0] == prefix->as_u64[0] && - vip->prefix.as_u64[1] == prefix->as_u64[1]) { - *vip_index = vip - lbm->vips; - return 0; - } - }); - return VNET_API_ERROR_NO_SUCH_ENTRY; -} - -int lb_vip_find_index(ip46_address_t *prefix, u8 plen, u32 *vip_index) -{ - int ret; - lb_get_writer_lock(); - ret = lb_vip_find_index_with_lock(prefix, plen, vip_index); - lb_put_writer_lock(); - return ret; -} - -static int lb_as_find_index_vip(lb_vip_t *vip, ip46_address_t *address, u32 *as_index) -{ - lb_main_t *lbm = &lb_main; - ASSERT (lbm->writer_lock[0]); //This must be called with the lock owned - lb_as_t *as; - u32 *asi; - pool_foreach(asi, vip->as_indexes, { - as = &lbm->ass[*asi]; - if (as->vip_index == (vip - lbm->vips) && - as->address.as_u64[0] == address->as_u64[0] && - as->address.as_u64[1] == address->as_u64[1]) { - *as_index = as - lbm->ass; - return 0; - } - }); - return -1; -} - -int lb_vip_add_ass(u32 vip_index, ip46_address_t *addresses, u32 n) -{ - lb_main_t *lbm = &lb_main; - lb_get_writer_lock(); - lb_vip_t *vip; - if (!(vip = lb_vip_get_by_index(vip_index))) { - lb_put_writer_lock(); - return VNET_API_ERROR_NO_SUCH_ENTRY; - } - - ip46_type_t type = lb_vip_is_gre4(vip)?IP46_TYPE_IP4:IP46_TYPE_IP6; - u32 *to_be_added = 0; - u32 *to_be_updated = 0; - u32 i; - u32 *ip; - - //Sanity check - while (n--) { - - if (!lb_as_find_index_vip(vip, &addresses[n], &i)) { - if (lbm->ass[i].flags & LB_AS_FLAGS_USED) { - vec_free(to_be_added); - vec_free(to_be_updated); - lb_put_writer_lock(); - return VNET_API_ERROR_VALUE_EXIST; - } - vec_add1(to_be_updated, i); - goto next; - } - - if (ip46_address_type(&addresses[n]) != type) { - vec_free(to_be_added); - vec_free(to_be_updated); - lb_put_writer_lock(); - return VNET_API_ERROR_INVALID_ADDRESS_FAMILY; - } - - if (n) { - u32 n2 = n; - while(n2--) //Check for duplicates - if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] && - addresses[n2].as_u64[1] == addresses[n].as_u64[1]) - goto next; - } - - vec_add1(to_be_added, n); - -next: - continue; - } - - //Update reused ASs - vec_foreach(ip, to_be_updated) { - lbm->ass[*ip].flags = LB_AS_FLAGS_USED; - } - vec_free(to_be_updated); - - //Create those who have to be created - vec_foreach(ip, to_be_added) { - lb_as_t *as; - u32 *as_index; - pool_get(lbm->ass, as); - as->address = addresses[*ip]; - as->flags = LB_AS_FLAGS_USED; - as->vip_index = vip_index; - pool_get(vip->as_indexes, as_index); - *as_index = as - lbm->ass; - - /* - * become a child of the FIB entry - * so we are informed when its forwarding changes - */ - fib_prefix_t nh = {}; - if (lb_vip_is_gre4(vip)) { - nh.fp_addr.ip4 = as->address.ip4; - nh.fp_len = 32; - nh.fp_proto = FIB_PROTOCOL_IP4; - } else { - nh.fp_addr.ip6 = as->address.ip6; - nh.fp_len = 128; - nh.fp_proto = FIB_PROTOCOL_IP6; - } - - as->next_hop_fib_entry_index = - fib_table_entry_special_add(0, - &nh, - FIB_SOURCE_RR, - FIB_ENTRY_FLAG_NONE, - ADJ_INDEX_INVALID); - as->next_hop_child_index = - fib_entry_child_add(as->next_hop_fib_entry_index, - lbm->fib_node_type, - as - lbm->ass); - - lb_as_stack(as); - } - vec_free(to_be_added); - - //Recompute flows - lb_vip_update_new_flow_table(vip); - - //Garbage collection maybe - lb_vip_garbage_collection(vip); - - lb_put_writer_lock(); - return 0; -} - -int lb_vip_del_ass_withlock(u32 vip_index, ip46_address_t *addresses, u32 n) -{ - lb_main_t *lbm = &lb_main; - u32 now = (u32) vlib_time_now(vlib_get_main()); - u32 *ip = 0; - - lb_vip_t *vip; - if (!(vip = lb_vip_get_by_index(vip_index))) { - return VNET_API_ERROR_NO_SUCH_ENTRY; - } - - u32 *indexes = NULL; - while (n--) { - u32 i; - if (lb_as_find_index_vip(vip, &addresses[n], &i)) { - vec_free(indexes); - return VNET_API_ERROR_NO_SUCH_ENTRY; - } - - if (n) { //Check for duplicates - u32 n2 = n - 1; - while(n2--) { - if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] && - addresses[n2].as_u64[1] == addresses[n].as_u64[1]) - goto next; - } - } - - vec_add1(indexes, i); -next: - continue; - } - - //Garbage collection maybe - lb_vip_garbage_collection(vip); - - if (indexes != NULL) { - vec_foreach(ip, indexes) { - lbm->ass[*ip].flags &= ~LB_AS_FLAGS_USED; - lbm->ass[*ip].last_used = now; - } - - //Recompute flows - lb_vip_update_new_flow_table(vip); - } - - vec_free(indexes); - return 0; -} - -int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n) -{ - lb_get_writer_lock(); - int ret = lb_vip_del_ass_withlock(vip_index, addresses, n); - lb_put_writer_lock(); - return ret; -} - -/** - * Add the VIP adjacency to the ip4 or ip6 fib - */ -static void lb_vip_add_adjacency(lb_main_t *lbm, lb_vip_t *vip) -{ - dpo_proto_t proto = 0; - dpo_id_t dpo = DPO_INVALID; - fib_prefix_t pfx = {}; - if (lb_vip_is_ip4(vip)) { - pfx.fp_addr.ip4 = vip->prefix.ip4; - pfx.fp_len = vip->plen - 96; - pfx.fp_proto = FIB_PROTOCOL_IP4; - proto = DPO_PROTO_IP4; - } else { - pfx.fp_addr.ip6 = vip->prefix.ip6; - pfx.fp_len = vip->plen; - pfx.fp_proto = FIB_PROTOCOL_IP6; - proto = DPO_PROTO_IP6; - } - dpo_set(&dpo, lb_vip_is_gre4(vip)?lbm->dpo_gre4_type:lbm->dpo_gre6_type, - proto, vip - lbm->vips); - fib_table_entry_special_dpo_add(0, - &pfx, - FIB_SOURCE_PLUGIN_HI, - FIB_ENTRY_FLAG_EXCLUSIVE, - &dpo); - dpo_reset(&dpo); -} - -/** - * Deletes the adjacency associated with the VIP - */ -static void lb_vip_del_adjacency(lb_main_t *lbm, lb_vip_t *vip) -{ - fib_prefix_t pfx = {}; - if (lb_vip_is_ip4(vip)) { - pfx.fp_addr.ip4 = vip->prefix.ip4; - pfx.fp_len = vip->plen - 96; - pfx.fp_proto = FIB_PROTOCOL_IP4; - } else { - pfx.fp_addr.ip6 = vip->prefix.ip6; - pfx.fp_len = vip->plen; - pfx.fp_proto = FIB_PROTOCOL_IP6; - } - fib_table_entry_special_remove(0, &pfx, FIB_SOURCE_PLUGIN_HI); -} - -int lb_vip_add(ip46_address_t *prefix, u8 plen, lb_vip_type_t type, u32 new_length, u32 *vip_index) -{ - lb_main_t *lbm = &lb_main; - lb_vip_t *vip; - lb_get_writer_lock(); - ip46_prefix_normalize(prefix, plen); - - if (!lb_vip_find_index_with_lock(prefix, plen, vip_index)) { - lb_put_writer_lock(); - return VNET_API_ERROR_VALUE_EXIST; - } - - if (!is_pow2(new_length)) { - lb_put_writer_lock(); - return VNET_API_ERROR_INVALID_MEMORY_SIZE; - } - - if (ip46_prefix_is_ip4(prefix, plen) && - (type != LB_VIP_TYPE_IP4_GRE4) && - (type != LB_VIP_TYPE_IP4_GRE6)) - return VNET_API_ERROR_INVALID_ADDRESS_FAMILY; - - - //Allocate - pool_get(lbm->vips, vip); - - //Init - vip->prefix = *prefix; - vip->plen = plen; - vip->last_garbage_collection = (u32) vlib_time_now(vlib_get_main()); - vip->type = type; - vip->flags = LB_VIP_FLAGS_USED; - vip->as_indexes = 0; - - //Validate counters - u32 i; - for (i = 0; i < LB_N_VIP_COUNTERS; i++) { - vlib_validate_simple_counter(&lbm->vip_counters[i], vip - lbm->vips); - vlib_zero_simple_counter(&lbm->vip_counters[i], vip - lbm->vips); - } - - //Configure new flow table - vip->new_flow_table_mask = new_length - 1; - vip->new_flow_table = 0; - - //Create a new flow hash table full of the default entry - lb_vip_update_new_flow_table(vip); - - //Create adjacency to direct traffic - lb_vip_add_adjacency(lbm, vip); - - //Return result - *vip_index = vip - lbm->vips; - - lb_put_writer_lock(); - return 0; -} - -int lb_vip_del(u32 vip_index) -{ - lb_main_t *lbm = &lb_main; - lb_vip_t *vip; - lb_get_writer_lock(); - if (!(vip = lb_vip_get_by_index(vip_index))) { - lb_put_writer_lock(); - return VNET_API_ERROR_NO_SUCH_ENTRY; - } - - //FIXME: This operation is actually not working - //We will need to remove state before performing this. - - { - //Remove all ASs - ip46_address_t *ass = 0; - lb_as_t *as; - u32 *as_index; - pool_foreach(as_index, vip->as_indexes, { - as = &lbm->ass[*as_index]; - vec_add1(ass, as->address); - }); - if (vec_len(ass)) - lb_vip_del_ass_withlock(vip_index, ass, vec_len(ass)); - vec_free(ass); - } - - //Delete adjacency - lb_vip_del_adjacency(lbm, vip); - - //Set the VIP as unused - vip->flags &= ~LB_VIP_FLAGS_USED; - - lb_put_writer_lock(); - return 0; -} - -clib_error_t * -vlib_plugin_register (vlib_main_t * vm, - vnet_plugin_handoff_t * h, - int from_early_init) -{ - clib_error_t *error = 0; - return error; -} - - -u8 *format_lb_dpo (u8 * s, va_list * va) -{ - index_t index = va_arg (*va, index_t); - CLIB_UNUSED(u32 indent) = va_arg (*va, u32); - lb_main_t *lbm = &lb_main; - lb_vip_t *vip = pool_elt_at_index (lbm->vips, index); - return format (s, "%U", format_lb_vip, vip); -} - -static void lb_dpo_lock (dpo_id_t *dpo) {} -static void lb_dpo_unlock (dpo_id_t *dpo) {} - -static fib_node_t * -lb_fib_node_get_node (fib_node_index_t index) -{ - lb_main_t *lbm = &lb_main; - lb_as_t *as = pool_elt_at_index (lbm->ass, index); - return (&as->fib_node); -} - -static void -lb_fib_node_last_lock_gone (fib_node_t *node) -{ -} - -static lb_as_t * -lb_as_from_fib_node (fib_node_t *node) -{ - return ((lb_as_t*)(((char*)node) - - STRUCT_OFFSET_OF(lb_as_t, fib_node))); -} - -static void -lb_as_stack (lb_as_t *as) -{ - lb_main_t *lbm = &lb_main; - lb_vip_t *vip = &lbm->vips[as->vip_index]; - dpo_stack(lb_vip_is_gre4(vip)?lbm->dpo_gre4_type:lbm->dpo_gre6_type, - lb_vip_is_ip4(vip)?DPO_PROTO_IP4:DPO_PROTO_IP6, - &as->dpo, - fib_entry_contribute_ip_forwarding( - as->next_hop_fib_entry_index)); -} - -static fib_node_back_walk_rc_t -lb_fib_node_back_walk_notify (fib_node_t *node, - fib_node_back_walk_ctx_t *ctx) -{ - lb_as_stack(lb_as_from_fib_node(node)); - return (FIB_NODE_BACK_WALK_CONTINUE); -} - -clib_error_t * -lb_init (vlib_main_t * vm) -{ - vlib_thread_main_t *tm = vlib_get_thread_main (); - lb_main_t *lbm = &lb_main; - lb_as_t *default_as; - fib_node_vft_t lb_fib_node_vft = { - .fnv_get = lb_fib_node_get_node, - .fnv_last_lock = lb_fib_node_last_lock_gone, - .fnv_back_walk = lb_fib_node_back_walk_notify, - }; - dpo_vft_t lb_vft = { - .dv_lock = lb_dpo_lock, - .dv_unlock = lb_dpo_unlock, - .dv_format = format_lb_dpo, - }; - - lbm->vips = 0; - lbm->per_cpu = 0; - vec_validate(lbm->per_cpu, tm->n_vlib_mains - 1); - lbm->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES); - lbm->writer_lock[0] = 0; - lbm->per_cpu_sticky_buckets = LB_DEFAULT_PER_CPU_STICKY_BUCKETS; - lbm->flow_timeout = LB_DEFAULT_FLOW_TIMEOUT; - lbm->ip4_src_address.as_u32 = 0xffffffff; - lbm->ip6_src_address.as_u64[0] = 0xffffffffffffffffL; - lbm->ip6_src_address.as_u64[1] = 0xffffffffffffffffL; - lbm->dpo_gre4_type = dpo_register_new_type(&lb_vft, lb_dpo_gre4_nodes); - lbm->dpo_gre6_type = dpo_register_new_type(&lb_vft, lb_dpo_gre6_nodes); - lbm->fib_node_type = fib_node_register_new_type(&lb_fib_node_vft); - - //Init AS reference counters - vlib_refcount_init(&lbm->as_refcount); - - //Allocate and init default AS. - lbm->ass = 0; - pool_get(lbm->ass, default_as); - default_as->flags = 0; - default_as->dpo.dpoi_next_node = LB_NEXT_DROP; - default_as->vip_index = ~0; - default_as->address.ip6.as_u64[0] = 0xffffffffffffffffL; - default_as->address.ip6.as_u64[1] = 0xffffffffffffffffL; - -#define _(a,b,c) lbm->vip_counters[c].name = b; - lb_foreach_vip_counter -#undef _ - return NULL; -} - -VLIB_INIT_FUNCTION (lb_init); |