+++ /dev/null
-/*
- * 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 <vnet/lisp-cp/gid_dictionary.h>
-
-typedef struct
-{
- void *arg;
- ip_prefix_t src;
- foreach_subprefix_match_cb_t cb;
- union
- {
- gid_ip4_table_t *ip4_table;
- gid_ip6_table_t *ip6_table;
- };
-} sfib_entry_arg_t;
-
-static u32 ip4_lookup (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key);
-
-static u32 ip6_lookup (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key);
-
-static int
-foreach_sfib4_subprefix (BVT (clib_bihash_kv) * kvp, void *arg)
-{
- sfib_entry_arg_t *a = arg;
- u32 ip = (u32) kvp->key[0];
- ip4_address_t *mask;
- u8 plen = ip_prefix_len (&a->src);
-
- ASSERT (plen <= 32);
- mask = &a->ip4_table->ip4_fib_masks[plen];
-
- u32 src_ip = ip_prefix_v4 (&a->src).as_u32;
- src_ip &= mask->as_u32;
- ip &= mask->as_u32;
-
- if (src_ip == ip)
- {
- /* found sub-prefix of src prefix */
- (a->cb) (kvp->value, a->arg);
- }
- return (BIHASH_WALK_CONTINUE);
-}
-
-static void
-gid_dict_foreach_ip4_subprefix (gid_dictionary_t * db, u32 vni,
- ip_prefix_t * src, ip_prefix_t * dst,
- foreach_subprefix_match_cb_t cb, void *arg)
-{
- u32 sfi;
- gid_ip4_table_t *sfib4;
- sfib_entry_arg_t a;
-
- sfi = ip4_lookup (&db->dst_ip4_table, vni, dst);
- if (GID_LOOKUP_MISS == sfi)
- return;
-
- sfib4 = pool_elt_at_index (db->src_ip4_table_pool, sfi);
-
- a.arg = arg;
- a.cb = cb;
- a.src = src[0];
- a.ip4_table = sfib4;
-
- BV (clib_bihash_foreach_key_value_pair) (&sfib4->ip4_lookup_table,
- foreach_sfib4_subprefix, &a);
-}
-
-static int
-foreach_sfib6_subprefix (BVT (clib_bihash_kv) * kvp, void *arg)
-{
- sfib_entry_arg_t *a = arg;
- ip6_address_t ip;
- ip6_address_t *mask;
- u8 plen = ip_prefix_len (&a->src);
-
- mask = &a->ip6_table->ip6_fib_masks[plen];
- ip.as_u64[0] = kvp->key[0];
- ip.as_u64[1] = kvp->key[1];
-
- if (ip6_address_is_equal_masked (&ip_prefix_v6 (&a->src), &ip, mask))
- {
- /* found sub-prefix of src prefix */
- (a->cb) (kvp->value, a->arg);
- }
- return (BIHASH_WALK_CONTINUE);
-}
-
-static void
-gid_dict_foreach_ip6_subprefix (gid_dictionary_t * db, u32 vni,
- ip_prefix_t * src, ip_prefix_t * dst,
- foreach_subprefix_match_cb_t cb, void *arg)
-{
- u32 sfi;
- gid_ip6_table_t *sfib6;
- sfib_entry_arg_t a;
-
- sfi = ip6_lookup (&db->dst_ip6_table, vni, dst);
- if (GID_LOOKUP_MISS == sfi)
- return;
-
- sfib6 = pool_elt_at_index (db->src_ip6_table_pool, sfi);
-
- a.arg = arg;
- a.cb = cb;
- a.src = src[0];
- a.ip6_table = sfib6;
-
- BV (clib_bihash_foreach_key_value_pair) (&sfib6->ip6_lookup_table,
- foreach_sfib6_subprefix, &a);
-}
-
-void
-gid_dict_foreach_subprefix (gid_dictionary_t * db, gid_address_t * eid,
- foreach_subprefix_match_cb_t cb, void *arg)
-{
- ip_prefix_t *ippref = &gid_address_sd_dst_ippref (eid);
-
- if (AF_IP4 == ip_prefix_version (ippref))
- gid_dict_foreach_ip4_subprefix (db, gid_address_vni (eid),
- &gid_address_sd_src_ippref (eid),
- &gid_address_sd_dst_ippref (eid), cb,
- arg);
- else
- gid_dict_foreach_ip6_subprefix (db, gid_address_vni (eid),
- &gid_address_sd_src_ippref (eid),
- &gid_address_sd_dst_ippref (eid), cb,
- arg);
-}
-
-void
-gid_dict_foreach_l2_arp_ndp_entry (gid_dictionary_t * db,
- BV (clib_bihash_foreach_key_value_pair_cb)
- cb, void *ht)
-{
- gid_l2_arp_ndp_table_t *tab = &db->arp_ndp_table;
- BV (clib_bihash_foreach_key_value_pair) (&tab->arp_ndp_lookup_table, cb,
- ht);
-}
-
-static void
-make_mac_sd_key (BVT (clib_bihash_kv) * kv, u32 vni, u8 src_mac[6],
- u8 dst_mac[6])
-{
- kv->key[0] = (u64) vni;
- kv->key[1] = mac_to_u64 (dst_mac);
- kv->key[2] = src_mac ? mac_to_u64 (src_mac) : (u64) 0;
-}
-
-static u32
-mac_sd_lookup (gid_mac_table_t * db, u32 vni, u8 * dst, u8 * src)
-{
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- make_mac_sd_key (&kv, vni, src, dst);
- rv = BV (clib_bihash_search_inline_2) (&db->mac_lookup_table, &kv, &value);
-
- /* no match, try with src 0, catch all for dst */
- if (rv != 0)
- {
- kv.key[2] = 0;
- rv = BV (clib_bihash_search_inline_2) (&db->mac_lookup_table, &kv,
- &value);
- if (rv == 0)
- return value.value;
- }
- else
- return value.value;
-
- return GID_LOOKUP_MISS;
-}
-
-static u32
-ip4_lookup_exact_match (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key)
-{
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- ip4_address_t *mask;
-
- mask = &db->ip4_fib_masks[ip_prefix_len (key)];
-
- kv.key[0] = ((u64) vni << 32) | (ip_prefix_v4 (key).as_u32 & mask->as_u32);
- kv.key[1] = 0;
- kv.key[2] = 0;
-
- rv = BV (clib_bihash_search_inline_2) (&db->ip4_lookup_table, &kv, &value);
- if (rv == 0)
- return value.value;
-
- return GID_LOOKUP_MISS;
-}
-
-static u32
-ip4_lookup (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key)
-{
- int i, len;
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- len = vec_len (db->ip4_prefix_lengths_in_search_order);
-
- for (i = 0; i < len; i++)
- {
- int dst_address_length = db->ip4_prefix_lengths_in_search_order[i];
- ip4_address_t *mask;
-
- ASSERT (dst_address_length >= 0 && dst_address_length <= 32);
-
- mask = &db->ip4_fib_masks[dst_address_length];
-
- kv.key[0] =
- ((u64) vni << 32) | (ip_prefix_v4 (key).as_u32 & mask->as_u32);
- kv.key[1] = 0;
- kv.key[2] = 0;
-
- rv =
- BV (clib_bihash_search_inline_2) (&db->ip4_lookup_table, &kv, &value);
- if (rv == 0)
- return value.value;
- }
-
- return GID_LOOKUP_MISS;
-}
-
-static u32
-ip6_lookup_exact_match (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key)
-{
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- ip6_address_t *mask;
- mask = &db->ip6_fib_masks[ip_prefix_len (key)];
-
- kv.key[0] = ip_prefix_v6 (key).as_u64[0] & mask->as_u64[0];
- kv.key[1] = ip_prefix_v6 (key).as_u64[1] & mask->as_u64[1];
- kv.key[2] = (u64) vni;
-
- rv = BV (clib_bihash_search_inline_2) (&db->ip6_lookup_table, &kv, &value);
- if (rv == 0)
- return value.value;
-
- return GID_LOOKUP_MISS;
-}
-
-static u32
-ip6_lookup (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key)
-{
- int i, len;
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- len = vec_len (db->ip6_prefix_lengths_in_search_order);
-
- for (i = 0; i < len; i++)
- {
- int dst_address_length = db->ip6_prefix_lengths_in_search_order[i];
- ip6_address_t *mask;
-
- ASSERT (dst_address_length >= 0 && dst_address_length <= 128);
-
- mask = &db->ip6_fib_masks[dst_address_length];
-
- kv.key[0] = ip_prefix_v6 (key).as_u64[0] & mask->as_u64[0];
- kv.key[1] = ip_prefix_v6 (key).as_u64[1] & mask->as_u64[1];
- kv.key[2] = (u64) vni;
-
- rv =
- BV (clib_bihash_search_inline_2) (&db->ip6_lookup_table, &kv, &value);
- if (rv == 0)
- return value.value;
- }
-
- return GID_LOOKUP_MISS;
-}
-
-static u32
-ip_sd_lookup (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst,
- ip_prefix_t * src)
-{
- u32 sfi;
- gid_ip4_table_t *sfib4;
- gid_ip6_table_t *sfib6;
-
- switch (ip_prefix_version (dst))
- {
- case AF_IP4:
- sfi = ip4_lookup (&db->dst_ip4_table, vni, dst);
- if (GID_LOOKUP_MISS != sfi)
- sfib4 = pool_elt_at_index (db->src_ip4_table_pool, sfi);
- else
- return GID_LOOKUP_MISS;
-
- if (!src)
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- return ip4_lookup_exact_match (sfib4, 0, &sp);
- }
- else
- return ip4_lookup (sfib4, 0, src);
-
- break;
- case AF_IP6:
- sfi = ip6_lookup (&db->dst_ip6_table, vni, dst);
- if (GID_LOOKUP_MISS != sfi)
- sfib6 = pool_elt_at_index (db->src_ip6_table_pool, sfi);
- else
- return GID_LOOKUP_MISS;
-
- if (!src)
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- ip_prefix_version (&sp) = AF_IP6;
- return ip6_lookup_exact_match (sfib6, 0, &sp);
- }
- else
- return ip6_lookup (sfib6, 0, src);
-
- break;
- default:
- clib_warning ("address type %d not supported!",
- ip_prefix_version (dst));
- break;
- }
- return GID_LOOKUP_MISS;
-}
-
-static void
-make_arp_ndp_key (BVT (clib_bihash_kv) * kv, u32 bd, ip_address_t * addr)
-{
- kv->key[0] = ((u64) bd << 32) | (u32) ip_addr_version (addr);
- if (ip_addr_version (addr) == AF_IP4)
- {
- kv->key[1] = (u64) ip_addr_v4 (addr).as_u32;
- kv->key[2] = (u64) 0;
- }
- else
- {
- kv->key[1] = (u64) ip_addr_v6 (addr).as_u64[0];
- kv->key[2] = (u64) ip_addr_v6 (addr).as_u64[1];
- }
-}
-
-static void
-make_nsh_key (BVT (clib_bihash_kv) * kv, u32 vni, u32 spi, u8 si)
-{
- kv->key[0] = (u64) vni;
- kv->key[1] = (u64) spi;
- kv->key[2] = (u64) si;
-}
-
-static u64
-arp_ndp_lookup (gid_l2_arp_ndp_table_t * db, u32 bd, ip_address_t * key)
-{
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- make_arp_ndp_key (&kv, bd, key);
- rv = BV (clib_bihash_search_inline_2) (&db->arp_ndp_lookup_table, &kv,
- &value);
-
- if (rv == 0)
- return value.value;
-
- return GID_LOOKUP_MISS_L2;
-}
-
-static u32
-nsh_lookup (gid_nsh_table_t * db, u32 vni, u32 spi, u8 si)
-{
- int rv;
- BVT (clib_bihash_kv) kv, value;
-
- make_nsh_key (&kv, vni, spi, si);
- rv = BV (clib_bihash_search_inline_2) (&db->nsh_lookup_table, &kv, &value);
-
- if (rv == 0)
- return value.value;
-
- return GID_LOOKUP_MISS;
-}
-
-u64
-gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t * key)
-{
- switch (gid_address_type (key))
- {
- case GID_ADDR_IP_PREFIX:
- return ip_sd_lookup (db, gid_address_vni (key),
- &gid_address_ippref (key), 0);
- case GID_ADDR_MAC:
- return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (key),
- gid_address_mac (key), 0);
- case GID_ADDR_SRC_DST:
- switch (gid_address_sd_dst_type (key))
- {
- case FID_ADDR_IP_PREF:
- return ip_sd_lookup (db, gid_address_vni (key),
- &gid_address_sd_dst_ippref (key),
- &gid_address_sd_src_ippref (key));
- break;
- case FID_ADDR_MAC:
- return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (key),
- gid_address_sd_dst_mac (key),
- gid_address_sd_src_mac (key));
- break;
- default:
- clib_warning ("Source/Dest address type %d not supported!",
- gid_address_sd_dst_type (key));
- break;
- }
- break;
- case GID_ADDR_ARP:
- case GID_ADDR_NDP:
- return arp_ndp_lookup (&db->arp_ndp_table, gid_address_arp_ndp_bd (key),
- &gid_address_arp_ndp_ip (key));
- case GID_ADDR_NSH:
- return nsh_lookup (&db->nsh_table, gid_address_vni (key),
- gid_address_nsh_spi (key), gid_address_nsh_si (key));
- default:
- clib_warning ("address type %d not supported!", gid_address_type (key));
- break;
- }
- return GID_LOOKUP_MISS;
-}
-
-u32
-gid_dictionary_sd_lookup (gid_dictionary_t * db, gid_address_t * dst,
- gid_address_t * src)
-{
- switch (gid_address_type (dst))
- {
- case GID_ADDR_IP_PREFIX:
- return ip_sd_lookup (db, gid_address_vni (dst),
- &gid_address_ippref (dst),
- &gid_address_ippref (src));
- case GID_ADDR_MAC:
- return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (dst),
- gid_address_mac (dst), gid_address_mac (src));
- case GID_ADDR_SRC_DST:
- switch (gid_address_sd_dst_type (dst))
- {
- case FID_ADDR_IP_PREF:
- return ip_sd_lookup (db, gid_address_vni (dst),
- &gid_address_sd_dst_ippref (dst),
- &gid_address_sd_src_ippref (dst));
- break;
- case FID_ADDR_MAC:
- return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (dst),
- gid_address_sd_dst_mac (dst),
- gid_address_sd_src_mac (dst));
- break;
- default:
- clib_warning ("Source/Dest address type %d not supported!",
- gid_address_sd_dst_type (dst));
- break;
- }
- break;
- case GID_ADDR_NSH:
- return gid_dictionary_lookup (db, dst);
- break;
- default:
- clib_warning ("address type %d not supported!", gid_address_type (dst));
- break;
- }
- return GID_LOOKUP_MISS;
-}
-
-static void
-ip4_compute_prefix_lengths_in_search_order (gid_ip4_table_t * db)
-{
- int i;
- vec_reset_length (db->ip4_prefix_lengths_in_search_order);
- /* Note: bitmap reversed so this is in fact a longest prefix match */
-
- /* *INDENT-OFF* */
- clib_bitmap_foreach (i, db->ip4_non_empty_dst_address_length_bitmap,
- ({
- int dst_address_length = 32 - i;
- vec_add1 (db->ip4_prefix_lengths_in_search_order, dst_address_length);
- }));
- /* *INDENT-ON* */
-
-}
-
-static u32
-add_del_ip4_key (gid_ip4_table_t * db, u32 vni, ip_prefix_t * pref, u32 val,
- u8 is_add)
-{
- BVT (clib_bihash_kv) kv, value;
- u32 old_val = ~0;
- ip4_address_t key;
- u8 plen = ip_prefix_len (pref);
-
- clib_memcpy (&key, &ip_prefix_v4 (pref), sizeof (key));
- key.as_u32 &= db->ip4_fib_masks[plen].as_u32;
- if (is_add)
- {
- db->ip4_non_empty_dst_address_length_bitmap =
- clib_bitmap_set (db->ip4_non_empty_dst_address_length_bitmap,
- 32 - plen, 1);
- ip4_compute_prefix_lengths_in_search_order (db);
-
- db->ip4_prefix_len_refcount[plen]++;
- }
- else
- {
- ASSERT (db->ip4_prefix_len_refcount[plen] != 0);
-
- db->ip4_prefix_len_refcount[plen]--;
-
- if (db->ip4_prefix_len_refcount[plen] == 0)
- {
- db->ip4_non_empty_dst_address_length_bitmap =
- clib_bitmap_set (db->ip4_non_empty_dst_address_length_bitmap,
- 32 - plen, 0);
- ip4_compute_prefix_lengths_in_search_order (db);
- }
- }
-
- kv.key[0] = ((u64) vni << 32) | key.as_u32;
- kv.key[1] = 0;
- kv.key[2] = 0;
-
- if (BV (clib_bihash_search) (&db->ip4_lookup_table, &kv, &value) == 0)
- old_val = value.value;
-
- if (!is_add)
- {
- BV (clib_bihash_add_del) (&db->ip4_lookup_table, &kv, 0 /* is_add */ );
- db->count--;
- }
- else
- {
- kv.value = val;
- BV (clib_bihash_add_del) (&db->ip4_lookup_table, &kv, 1 /* is_add */ );
- db->count++;
- }
- return old_val;
-}
-
-static void
-ip4_lookup_init (gid_ip4_table_t * db)
-{
- BVT (clib_bihash_init2_args) _a, *a = &_a;
- uword i;
-
- clib_memset (db->ip4_prefix_len_refcount, 0,
- sizeof (db->ip4_prefix_len_refcount));
-
- for (i = 0; i < ARRAY_LEN (db->ip4_fib_masks); i++)
- {
- u32 m;
-
- if (i < 32)
- m = pow2_mask (i) << (32 - i);
- else
- m = ~0;
- db->ip4_fib_masks[i].as_u32 = clib_host_to_net_u32 (m);
- }
- if (db->ip4_lookup_table_nbuckets == 0)
- db->ip4_lookup_table_nbuckets = IP4_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
-
- db->ip4_lookup_table_nbuckets =
- 1 << max_log2 (db->ip4_lookup_table_nbuckets);
-
- if (db->ip4_lookup_table_size == 0)
- db->ip4_lookup_table_size = IP4_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
-
- /*
- * Danger Will Robinson, Danger! gid_ip4_table_t's are allocated from
- * a pool. They MUST NOT be listed on the clib_all_bihashes list...
- */
- memset (a, 0, sizeof (*a));
- a->h = &db->ip4_lookup_table;
- a->name = "LISP ip4 lookup table";
- a->nbuckets = db->ip4_lookup_table_nbuckets;
- a->memory_size = db->ip4_lookup_table_size;
- a->dont_add_to_all_bihash_list = 1; /* See comment above */
-
- BV (clib_bihash_init2) (a);
-}
-
-static u32
-add_del_sd_ip4_key (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_pref,
- ip_prefix_t * src_pref, u32 val, u8 is_add)
-{
- u32 sfi, old_val = ~0;
- gid_ip4_table_t *sfib;
-
- sfi = ip4_lookup_exact_match (&db->dst_ip4_table, vni, dst_pref);
-
- if (is_add)
- {
- if (GID_LOOKUP_MISS == sfi)
- {
- pool_get (db->src_ip4_table_pool, sfib);
- ip4_lookup_init (sfib);
- add_del_ip4_key (&db->dst_ip4_table, vni, dst_pref,
- sfib - db->src_ip4_table_pool, is_add);
- if (src_pref)
- add_del_ip4_key (sfib, 0 /* vni */ , src_pref, val, is_add);
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- add_del_ip4_key (sfib, 0 /* vni */ , &sp, val, is_add);
- }
- }
- else
- {
- ASSERT (!pool_is_free_index (db->src_ip4_table_pool, sfi));
- sfib = pool_elt_at_index (db->src_ip4_table_pool, sfi);
- if (src_pref)
- {
- old_val = ip4_lookup_exact_match (sfib, 0, src_pref);
- add_del_ip4_key (sfib, 0 /* vni */ , src_pref, val, is_add);
- }
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- old_val =
- add_del_ip4_key (sfib, 0 /* vni */ , &sp, val, is_add);
- }
- }
- }
- else
- {
- if (GID_LOOKUP_MISS != sfi)
- {
- sfib = pool_elt_at_index (db->src_ip4_table_pool, sfi);
- if (src_pref)
- old_val = add_del_ip4_key (sfib, 0, src_pref, 0, is_add);
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- old_val = add_del_ip4_key (sfib, 0, &sp, 0, is_add);
- }
-
- if (sfib->count == 0)
- add_del_ip4_key (&db->dst_ip4_table, vni, dst_pref, 0, is_add);
- }
- else
- clib_warning ("cannot delete dst mapping %U!", format_ip_prefix,
- dst_pref);
- }
- return old_val;
-}
-
-static void
-ip6_compute_prefix_lengths_in_search_order (gid_ip6_table_t * db)
-{
- int i;
- vec_reset_length (db->ip6_prefix_lengths_in_search_order);
- /* Note: bitmap reversed so this is in fact a longest prefix match */
-
- /* *INDENT-OFF* */
- clib_bitmap_foreach (i, db->ip6_non_empty_dst_address_length_bitmap,
- ({
- int dst_address_length = 128 - i;
- vec_add1 (db->ip6_prefix_lengths_in_search_order, dst_address_length);
- }));
- /* *INDENT-ON* */
-}
-
-static u32
-add_del_ip6_key (gid_ip6_table_t * db, u32 vni, ip_prefix_t * pref, u32 val,
- u8 is_add)
-{
- BVT (clib_bihash_kv) kv, value;
- u32 old_val = ~0;
- ip6_address_t key;
- u8 plen = ip_prefix_len (pref);
-
- clib_memcpy (&key, &ip_prefix_v6 (pref), sizeof (key));
- ip6_address_mask (&key, &db->ip6_fib_masks[plen]);
- if (is_add)
- {
- db->ip6_non_empty_dst_address_length_bitmap =
- clib_bitmap_set (db->ip6_non_empty_dst_address_length_bitmap,
- 128 - plen, 1);
- ip6_compute_prefix_lengths_in_search_order (db);
- db->ip6_prefix_len_refcount[plen]++;
- }
- else
- {
- ASSERT (db->ip6_prefix_len_refcount[plen] != 0);
-
- db->ip6_prefix_len_refcount[plen]--;
-
- if (db->ip6_prefix_len_refcount[plen] == 0)
- {
- db->ip6_non_empty_dst_address_length_bitmap =
- clib_bitmap_set (db->ip6_non_empty_dst_address_length_bitmap,
- 128 - plen, 0);
- ip6_compute_prefix_lengths_in_search_order (db);
- }
- }
-
- kv.key[0] = key.as_u64[0];
- kv.key[1] = key.as_u64[1];
- kv.key[2] = (u64) vni;
-// kv.key[2] = ((u64)((fib - im->fibs))<<32) | ip_prefix_len(key);
-
- if (BV (clib_bihash_search) (&db->ip6_lookup_table, &kv, &value) == 0)
- old_val = value.value;
-
- if (!is_add)
- {
- BV (clib_bihash_add_del) (&db->ip6_lookup_table, &kv, 0 /* is_add */ );
- db->count--;
- }
- else
- {
- kv.value = val;
- BV (clib_bihash_add_del) (&db->ip6_lookup_table, &kv, 1 /* is_add */ );
- db->count++;
- }
- return old_val;
-}
-
-static u32
-add_del_mac (gid_mac_table_t * db, u32 vni, u8 * dst_mac, u8 * src_mac,
- u32 val, u8 is_add)
-{
- BVT (clib_bihash_kv) kv, value;
- u32 old_val = ~0;
-
- make_mac_sd_key (&kv, vni, src_mac, dst_mac);
-
- if (BV (clib_bihash_search) (&db->mac_lookup_table, &kv, &value) == 0)
- old_val = value.value;
-
- if (!is_add)
- {
- BV (clib_bihash_add_del) (&db->mac_lookup_table, &kv, 0 /* is_add */ );
- db->count--;
- }
- else
- {
- kv.value = val;
- BV (clib_bihash_add_del) (&db->mac_lookup_table, &kv, 1 /* is_add */ );
- db->count++;
- }
- return old_val;
-}
-
-static void
-ip6_lookup_init (gid_ip6_table_t * db)
-{
- uword i;
- BVT (clib_bihash_init2_args) _a, *a = &_a;
-
- clib_memset (db->ip6_prefix_len_refcount, 0,
- sizeof (db->ip6_prefix_len_refcount));
-
- for (i = 0; i < ARRAY_LEN (db->ip6_fib_masks); i++)
- {
- u32 j, i0, i1;
-
- i0 = i / 32;
- i1 = i % 32;
-
- for (j = 0; j < i0; j++)
- db->ip6_fib_masks[i].as_u32[j] = ~0;
-
- if (i1)
- db->ip6_fib_masks[i].as_u32[i0] =
- clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1));
- }
-
- if (db->ip6_lookup_table_nbuckets == 0)
- db->ip6_lookup_table_nbuckets = IP6_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
-
- db->ip6_lookup_table_nbuckets =
- 1 << max_log2 (db->ip6_lookup_table_nbuckets);
-
- if (db->ip6_lookup_table_size == 0)
- db->ip6_lookup_table_size = IP6_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
-
- /*
- * Danger Will Robinson, Danger! gid_ip6_table_t's are allocated from
- * a pool. They MUST NOT be listed on the clib_all_bihashes list...
- */
- memset (a, 0, sizeof (*a));
- a->h = &db->ip6_lookup_table;
- a->name = "LISP ip6 lookup table";
- a->nbuckets = db->ip6_lookup_table_nbuckets;
- a->memory_size = db->ip6_lookup_table_size;
- a->dont_add_to_all_bihash_list = 1; /* See comment above */
-
- BV (clib_bihash_init2) (a);
-}
-
-static u32
-add_del_sd_ip6_key (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_pref,
- ip_prefix_t * src_pref, u32 val, u8 is_add)
-{
- u32 sfi, old_val = ~0;
- gid_ip6_table_t *sfib;
-
- sfi = ip6_lookup_exact_match (&db->dst_ip6_table, vni, dst_pref);
-
- if (is_add)
- {
- if (GID_LOOKUP_MISS == sfi)
- {
- pool_get (db->src_ip6_table_pool, sfib);
- ip6_lookup_init (sfib);
- add_del_ip6_key (&db->dst_ip6_table, vni, dst_pref,
- sfib - db->src_ip6_table_pool, is_add);
- if (src_pref)
- add_del_ip6_key (sfib, 0 /* vni */ , src_pref, val, is_add);
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- ip_prefix_version (&sp) = AF_IP6;
- add_del_ip6_key (sfib, 0 /* vni */ , &sp, val, is_add);
- }
- }
- else
- {
- ASSERT (!pool_is_free_index (db->src_ip6_table_pool, sfi));
- sfib = pool_elt_at_index (db->src_ip6_table_pool, sfi);
- if (src_pref)
- {
- old_val = ip6_lookup_exact_match (sfib, 0, src_pref);
- add_del_ip6_key (sfib, 0 /* vni */ , src_pref, val, is_add);
- }
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- ip_prefix_version (&sp) = AF_IP6;
- old_val =
- add_del_ip6_key (sfib, 0 /* vni */ , &sp, val, is_add);
- }
- }
- }
- else
- {
- if (GID_LOOKUP_MISS != sfi)
- {
- sfib = pool_elt_at_index (db->src_ip6_table_pool, sfi);
- if (src_pref)
- old_val = add_del_ip6_key (sfib, 0, src_pref, 0, is_add);
- else
- {
- ip_prefix_t sp;
- clib_memset (&sp, 0, sizeof (sp));
- ip_prefix_version (&sp) = AF_IP6;
- old_val = add_del_ip6_key (sfib, 0, &sp, 0, is_add);
- }
-
- if (sfib->count == 0)
- add_del_ip6_key (&db->dst_ip6_table, vni, dst_pref, 0, is_add);
- }
- else
- clib_warning ("cannot delete dst mapping %U!", format_ip_prefix,
- dst_pref);
- }
- return old_val;
-}
-
-static u32
-add_del_ip (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_key,
- ip_prefix_t * src_key, u32 value, u8 is_add)
-{
- switch (ip_prefix_version (dst_key))
- {
- case AF_IP4:
- return add_del_sd_ip4_key (db, vni, dst_key, src_key, value, is_add);
- break;
- case AF_IP6:
- return add_del_sd_ip6_key (db, vni, dst_key, src_key, value, is_add);
- break;
- default:
- clib_warning ("address type %d not supported!",
- ip_prefix_version (dst_key));
- break;
- }
- return ~0;
-}
-
-static u32
-add_del_sd (gid_dictionary_t * db, u32 vni, source_dest_t * key, u32 value,
- u8 is_add)
-{
- switch (sd_dst_type (key))
- {
- case FID_ADDR_IP_PREF:
- add_del_ip (db, vni, &sd_dst_ippref (key), &sd_src_ippref (key),
- value, is_add);
-
- case FID_ADDR_MAC:
- return add_del_mac (&db->sd_mac_table, vni, sd_dst_mac (key),
- sd_src_mac (key), value, is_add);
-
- default:
- clib_warning ("SD address type %d not supported!", sd_dst_type (key));
- break;
- }
-
- return ~0;
-}
-
-static u64
-add_del_arp_ndp (gid_l2_arp_ndp_table_t * db, u32 bd, ip_address_t * key,
- u64 value, u8 is_add)
-{
- BVT (clib_bihash_kv) kv, result;
- u32 old_val = ~0;
-
- make_arp_ndp_key (&kv, bd, key);
- if (BV (clib_bihash_search) (&db->arp_ndp_lookup_table, &kv, &result) == 0)
- old_val = result.value;
-
- if (is_add)
- {
- kv.value = value;
- BV (clib_bihash_add_del) (&db->arp_ndp_lookup_table, &kv,
- 1 /* is_add */ );
- db->count++;
- }
- else
- {
- BV (clib_bihash_add_del) (&db->arp_ndp_lookup_table, &kv,
- 0 /* is_add */ );
- db->count--;
- }
- return old_val;
-}
-
-static u32
-add_del_nsh (gid_nsh_table_t * db, u32 vni, u32 spi, u8 si, u32 value,
- u8 is_add)
-{
- BVT (clib_bihash_kv) kv, result;
- u32 old_val = ~0;
-
- make_nsh_key (&kv, vni, spi, si);
- if (BV (clib_bihash_search) (&db->nsh_lookup_table, &kv, &result) == 0)
- old_val = result.value;
-
- if (is_add)
- {
- kv.value = value;
- BV (clib_bihash_add_del) (&db->nsh_lookup_table, &kv, 1 /* is_add */ );
- db->count++;
- }
- else
- {
- BV (clib_bihash_add_del) (&db->nsh_lookup_table, &kv, 0 /* is_add */ );
- db->count--;
- }
- return old_val;
-}
-
-u32
-gid_dictionary_add_del (gid_dictionary_t * db, gid_address_t * key, u64 value,
- u8 is_add)
-{
- switch (gid_address_type (key))
- {
- case GID_ADDR_IP_PREFIX:
- return add_del_ip (db, gid_address_vni (key), &gid_address_ippref (key),
- 0, (u32) value, is_add);
- case GID_ADDR_MAC:
- return add_del_mac (&db->sd_mac_table, gid_address_vni (key),
- gid_address_mac (key), 0, (u32) value, is_add);
- case GID_ADDR_SRC_DST:
- return add_del_sd (db, gid_address_vni (key), &gid_address_sd (key),
- (u32) value, is_add);
- case GID_ADDR_ARP:
- case GID_ADDR_NDP:
- return add_del_arp_ndp (&db->arp_ndp_table,
- gid_address_arp_ndp_bd (key),
- &gid_address_arp_ndp_ip (key), value, is_add);
- case GID_ADDR_NSH:
- return add_del_nsh (&db->nsh_table, gid_address_vni (key),
- gid_address_nsh_spi (key), gid_address_nsh_si (key),
- value, is_add);
-
- default:
- clib_warning ("address type %d not supported!", gid_address_type (key));
- break;
- }
- return ~0;
-}
-
-static void
-mac_lookup_init (gid_mac_table_t * db)
-{
- if (db->mac_lookup_table_nbuckets == 0)
- db->mac_lookup_table_nbuckets = MAC_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
-
- db->mac_lookup_table_nbuckets =
- 1 << max_log2 (db->mac_lookup_table_nbuckets);
-
- if (db->mac_lookup_table_size == 0)
- db->mac_lookup_table_size = MAC_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
-
- BV (clib_bihash_init) (&db->mac_lookup_table, "mac lookup table",
- db->mac_lookup_table_nbuckets,
- db->mac_lookup_table_size);
-}
-
-static void
-arp_ndp_lookup_init (gid_l2_arp_ndp_table_t * db)
-{
- if (db->arp_ndp_lookup_table_nbuckets == 0)
- db->arp_ndp_lookup_table_nbuckets =
- ARP_NDP_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
-
- db->arp_ndp_lookup_table_nbuckets =
- 1 << max_log2 (db->arp_ndp_lookup_table_nbuckets);
-
- if (db->arp_ndp_lookup_table_size == 0)
- db->arp_ndp_lookup_table_size = ARP_NDP_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
-
- BV (clib_bihash_init) (&db->arp_ndp_lookup_table, "arp ndp lookup table",
- db->arp_ndp_lookup_table_nbuckets,
- db->arp_ndp_lookup_table_size);
-}
-
-static void
-nsh_lookup_init (gid_nsh_table_t * db)
-{
- if (db->nsh_lookup_table_nbuckets == 0)
- db->nsh_lookup_table_nbuckets = MAC_LOOKUP_DEFAULT_HASH_NUM_BUCKETS;
-
- db->nsh_lookup_table_nbuckets =
- 1 << max_log2 (db->nsh_lookup_table_nbuckets);
-
- if (db->nsh_lookup_table_size == 0)
- db->nsh_lookup_table_size = MAC_LOOKUP_DEFAULT_HASH_MEMORY_SIZE;
-
- BV (clib_bihash_init) (&db->nsh_lookup_table, "nsh lookup table",
- db->nsh_lookup_table_nbuckets,
- db->nsh_lookup_table_size);
-}
-
-void
-gid_dictionary_init (gid_dictionary_t * db)
-{
- ip4_lookup_init (&db->dst_ip4_table);
- ip6_lookup_init (&db->dst_ip6_table);
- mac_lookup_init (&db->sd_mac_table);
- arp_ndp_lookup_init (&db->arp_ndp_table);
- nsh_lookup_init (&db->nsh_table);
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff