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-rw-r--r--plugins/lb-plugin/lb/lb.c844
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);