diff options
Diffstat (limited to 'vnet/vnet/fib/ip4_fib.c')
-rw-r--r-- | vnet/vnet/fib/ip4_fib.c | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/vnet/vnet/fib/ip4_fib.c b/vnet/vnet/fib/ip4_fib.c deleted file mode 100644 index f6ebce00837..00000000000 --- a/vnet/vnet/fib/ip4_fib.c +++ /dev/null @@ -1,664 +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 <vnet/fib/fib_table.h> -#include <vnet/fib/fib_entry.h> -#include <vnet/fib/ip4_fib.h> - -/* - * A table of pefixes to be added to tables and the sources for them - */ -typedef struct ip4_fib_table_special_prefix_t_ { - fib_prefix_t ift_prefix; - fib_source_t ift_source; - fib_entry_flag_t ift_flag; -} ip4_fib_table_special_prefix_t; - -static const ip4_fib_table_special_prefix_t ip4_specials[] = { - { - /* 0.0.0.0/0*/ - .ift_prefix = { - .fp_addr = { - .ip4.data_u32 = 0, - }, - .fp_len = 0, - .fp_proto = FIB_PROTOCOL_IP4, - }, - .ift_source = FIB_SOURCE_DEFAULT_ROUTE, - .ift_flag = FIB_ENTRY_FLAG_DROP, - }, - { - /* 0.0.0.0/32*/ - .ift_prefix = { - .fp_addr = { - .ip4.data_u32 = 0, - }, - .fp_len = 32, - .fp_proto = FIB_PROTOCOL_IP4, - }, - .ift_source = FIB_SOURCE_DEFAULT_ROUTE, - .ift_flag = FIB_ENTRY_FLAG_DROP, - }, - { - /* - * 240.0.0.0/4 - * drop class E - */ - .ift_prefix = { - .fp_addr = { - .ip4.data_u32 = 0xf0000000, - }, - .fp_len = 4, - .fp_proto = FIB_PROTOCOL_IP4, - }, - .ift_source = FIB_SOURCE_SPECIAL, - .ift_flag = FIB_ENTRY_FLAG_DROP, - - }, - { - /* - * 224.0.0.0/4 - * drop all mcast - */ - .ift_prefix = { - .fp_addr = { - .ip4.data_u32 = 0xe0000000, - }, - .fp_len = 4, - .fp_proto = FIB_PROTOCOL_IP4, - }, - .ift_source = FIB_SOURCE_SPECIAL, - .ift_flag = FIB_ENTRY_FLAG_DROP, - }, - { - /* - * 255.255.255.255/32 - * drop, but we'll allow it to be usurped by the likes of DHCP - */ - .ift_prefix = { - .fp_addr = { - .ip4.data_u32 = 0xffffffff, - }, - .fp_len = 32, - .fp_proto = FIB_PROTOCOL_IP4, - }, - .ift_source = FIB_SOURCE_DEFAULT_ROUTE, - .ift_flag = FIB_ENTRY_FLAG_DROP, - } -}; - - -static u32 -ip4_create_fib_with_table_id (u32 table_id) -{ - fib_table_t *fib_table; - - pool_get_aligned(ip4_main.fibs, fib_table, CLIB_CACHE_LINE_BYTES); - memset(fib_table, 0, sizeof(*fib_table)); - - fib_table->ft_proto = FIB_PROTOCOL_IP4; - fib_table->ft_index = - fib_table->v4.index = - (fib_table - ip4_main.fibs); - - hash_set (ip4_main.fib_index_by_table_id, table_id, fib_table->ft_index); - - fib_table->ft_table_id = - fib_table->v4.table_id = - table_id; - fib_table->ft_flow_hash_config = - fib_table->v4.flow_hash_config = - IP_FLOW_HASH_DEFAULT; - fib_table->v4.fwd_classify_table_index = ~0; - fib_table->v4.rev_classify_table_index = ~0; - - fib_table_lock(fib_table->ft_index, FIB_PROTOCOL_IP4); - - ip4_mtrie_init(&fib_table->v4.mtrie); - - /* - * add the special entries into the new FIB - */ - int ii; - - for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++) - { - fib_prefix_t prefix = ip4_specials[ii].ift_prefix; - - prefix.fp_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_addr.ip4.data_u32); - - fib_table_entry_special_add(fib_table->ft_index, - &prefix, - ip4_specials[ii].ift_source, - ip4_specials[ii].ift_flag, - ADJ_INDEX_INVALID); - } - - return (fib_table->ft_index); -} - -void -ip4_fib_table_destroy (ip4_fib_t *fib) -{ - fib_table_t *fib_table = (fib_table_t*)fib; - int ii; - - /* - * remove all the specials we added when the table was created. - */ - for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++) - { - fib_prefix_t prefix = ip4_specials[ii].ift_prefix; - - prefix.fp_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_addr.ip4.data_u32); - - fib_table_entry_special_remove(fib_table->ft_index, - &prefix, - ip4_specials[ii].ift_source); - } - - /* - * validate no more routes. - */ - ASSERT(0 == fib_table->ft_total_route_counts); - FOR_EACH_FIB_SOURCE(ii) - { - ASSERT(0 == fib_table->ft_src_route_counts[ii]); - } - - if (~0 != fib_table->ft_table_id) - { - hash_unset (ip4_main.fib_index_by_table_id, fib_table->ft_table_id); - } - pool_put(ip4_main.fibs, fib_table); -} - - -u32 -ip4_fib_table_find_or_create_and_lock (u32 table_id) -{ - u32 index; - - index = ip4_fib_index_from_table_id(table_id); - if (~0 == index) - return ip4_create_fib_with_table_id(table_id); - - fib_table_lock(index, FIB_PROTOCOL_IP4); - - return (index); -} - -u32 -ip4_fib_table_create_and_lock (void) -{ - return (ip4_create_fib_with_table_id(~0)); -} - -u32 -ip4_fib_table_get_index_for_sw_if_index (u32 sw_if_index) -{ - if (sw_if_index >= vec_len(ip4_main.fib_index_by_sw_if_index)) - { - /* - * This is the case for interfaces that are not yet mapped to - * a IP table - */ - return (~0); - } - return (ip4_main.fib_index_by_sw_if_index[sw_if_index]); -} - -flow_hash_config_t -ip4_fib_table_get_flow_hash_config (u32 fib_index) -{ - return (ip4_fib_get(fib_index)->flow_hash_config); -} - -/* - * ip4_fib_table_lookup_exact_match - * - * Exact match prefix lookup - */ -fib_node_index_t -ip4_fib_table_lookup_exact_match (const ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len) -{ - uword * hash, * result; - u32 key; - - hash = fib->fib_entry_by_dst_address[len]; - key = (addr->data_u32 & ip4_main.fib_masks[len]); - - result = hash_get(hash, key); - - if (NULL != result) { - return (result[0]); - } - return (FIB_NODE_INDEX_INVALID); -} - -/* - * ip4_fib_table_lookup_adj - * - * Longest prefix match - */ -index_t -ip4_fib_table_lookup_lb (ip4_fib_t *fib, - const ip4_address_t *addr) -{ - fib_node_index_t fei; - - fei = ip4_fib_table_lookup(fib, addr, 32); - - if (FIB_NODE_INDEX_INVALID != fei) - { - const dpo_id_t *dpo; - - dpo = fib_entry_contribute_ip_forwarding(fei); - - return (dpo->dpoi_index); - } - return (INDEX_INVALID); -} - -/* - * ip4_fib_table_lookup - * - * Longest prefix match - */ -fib_node_index_t -ip4_fib_table_lookup (const ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len) -{ - uword * hash, * result; - i32 mask_len; - u32 key; - - for (mask_len = len; mask_len >= 0; mask_len--) - { - hash = fib->fib_entry_by_dst_address[mask_len]; - key = (addr->data_u32 & ip4_main.fib_masks[mask_len]); - - result = hash_get (hash, key); - - if (NULL != result) { - return (result[0]); - } - } - return (FIB_NODE_INDEX_INVALID); -} - -void -ip4_fib_table_entry_insert (ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len, - fib_node_index_t fib_entry_index) -{ - uword * hash, * result; - u32 key; - - key = (addr->data_u32 & ip4_main.fib_masks[len]); - hash = fib->fib_entry_by_dst_address[len]; - result = hash_get (hash, key); - - if (NULL == result) { - /* - * adding a new entry - */ - if (NULL == hash) { - hash = hash_create (32 /* elts */, sizeof (uword)); - hash_set_flags (hash, HASH_FLAG_NO_AUTO_SHRINK); - } - hash = hash_set(hash, key, fib_entry_index); - fib->fib_entry_by_dst_address[len] = hash; - } - else - { - ASSERT(0); - } -} - -void -ip4_fib_table_entry_remove (ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len) -{ - uword * hash, * result; - u32 key; - - key = (addr->data_u32 & ip4_main.fib_masks[len]); - hash = fib->fib_entry_by_dst_address[len]; - result = hash_get (hash, key); - - if (NULL == result) - { - /* - * removing a non-existant entry. i'll allow it. - */ - } - else - { - hash_unset(hash, key); - } - - fib->fib_entry_by_dst_address[len] = hash; -} - -void -ip4_fib_table_fwding_dpo_update (ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len, - const dpo_id_t *dpo) -{ - ip4_fib_mtrie_add_del_route(fib, *addr, len, dpo->dpoi_index, 0); // ADD -} - -void -ip4_fib_table_fwding_dpo_remove (ip4_fib_t *fib, - const ip4_address_t *addr, - u32 len, - const dpo_id_t *dpo) -{ - ip4_fib_mtrie_add_del_route(fib, *addr, len, dpo->dpoi_index, 1); // DELETE -} - -static void -ip4_fib_table_show_all (ip4_fib_t *fib, - vlib_main_t * vm) -{ - fib_node_index_t *fib_entry_indicies; - fib_node_index_t *fib_entry_index; - int i; - - fib_entry_indicies = NULL; - - for (i = 0; i < ARRAY_LEN (fib->fib_entry_by_dst_address); i++) - { - uword * hash = fib->fib_entry_by_dst_address[i]; - - if (NULL != hash) - { - hash_pair_t * p; - - hash_foreach_pair (p, hash, - ({ - vec_add1(fib_entry_indicies, p->value[0]); - })); - } - } - - vec_sort_with_function(fib_entry_indicies, fib_entry_cmp_for_sort); - - vec_foreach(fib_entry_index, fib_entry_indicies) - { - vlib_cli_output(vm, "%U", - format_fib_entry, - *fib_entry_index, - FIB_ENTRY_FORMAT_BRIEF); - } - - vec_free(fib_entry_indicies); -} - -static void -ip4_fib_table_show_one (ip4_fib_t *fib, - vlib_main_t * vm, - ip4_address_t *address, - u32 mask_len) -{ - vlib_cli_output(vm, "%U", - format_fib_entry, - ip4_fib_table_lookup(fib, address, mask_len), - FIB_ENTRY_FORMAT_DETAIL); -} - -static clib_error_t * -ip4_show_fib (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - ip4_main_t * im4 = &ip4_main; - fib_table_t * fib_table; - int verbose, matching, mtrie; - ip4_address_t matching_address; - u32 matching_mask = 32; - int i, table_id = -1, fib_index = ~0; - - verbose = 1; - matching = 0; - mtrie = 0; - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "brief") || unformat (input, "summary") - || unformat (input, "sum")) - verbose = 0; - - else if (unformat (input, "mtrie")) - mtrie = 1; - - else if (unformat (input, "%U/%d", - unformat_ip4_address, &matching_address, &matching_mask)) - matching = 1; - - else if (unformat (input, "%U", unformat_ip4_address, &matching_address)) - matching = 1; - - else if (unformat (input, "table %d", &table_id)) - ; - else if (unformat (input, "index %d", &fib_index)) - ; - else - break; - } - - pool_foreach (fib_table, im4->fibs, - ({ - ip4_fib_t *fib = &fib_table->v4; - - if (table_id >= 0 && table_id != (int)fib->table_id) - continue; - if (fib_index != ~0 && fib_index != (int)fib->index) - continue; - - vlib_cli_output (vm, "%U, fib_index %d, flow hash: %U", - format_fib_table_name, fib->index, FIB_PROTOCOL_IP4, - fib->index, - format_ip_flow_hash_config, fib->flow_hash_config); - - /* Show summary? */ - if (! verbose) - { - vlib_cli_output (vm, "%=20s%=16s", "Prefix length", "Count"); - for (i = 0; i < ARRAY_LEN (fib->fib_entry_by_dst_address); i++) - { - uword * hash = fib->fib_entry_by_dst_address[i]; - uword n_elts = hash_elts (hash); - if (n_elts > 0) - vlib_cli_output (vm, "%20d%16d", i, n_elts); - } - continue; - } - - if (!matching) - { - ip4_fib_table_show_all(fib, vm); - } - else - { - ip4_fib_table_show_one(fib, vm, &matching_address, matching_mask); - } - - if (mtrie) - vlib_cli_output (vm, "%U", format_ip4_fib_mtrie, &fib->mtrie); - })); - - return 0; -} - -/*? - * This command displays the IPv4 FIB Tables (VRF Tables) and the route - * entries for each table. - * - * @note This command will run for a long time when the FIB tables are - * comprised of millions of entries. For those senarios, consider displaying - * a single table or summary mode. - * - * @cliexpar - * Example of how to display all the IPv4 FIB tables: - * @cliexstart{show ip fib} - * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto - * 0.0.0.0/0 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:0 buckets:1 uRPF:0 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 0.0.0.0/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:1 buckets:1 uRPF:1 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 6.0.1.2/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:30 buckets:1 uRPF:29 to:[0:0]] - * [0] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 - * 7.0.0.1/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:31 buckets:4 uRPF:30 to:[0:0]] - * [0] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 - * [1] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 - * [2] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 - * [3] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 - * 224.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:3 buckets:1 uRPF:3 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 240.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:2 buckets:1 uRPF:2 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 255.255.255.255/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:4 buckets:1 uRPF:4 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * ipv4-VRF:7, fib_index 1, flow hash: src dst sport dport proto - * 0.0.0.0/0 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 0.0.0.0/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 172.16.1.0/24 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] - * [0] [@4]: ipv4-glean: af_packet0 - * 172.16.1.1/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] - * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 - * 172.16.1.2/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] - * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 - * 172.16.2.0/24 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] - * [0] [@4]: ipv4-glean: af_packet1 - * 172.16.2.1/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] - * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 - * 224.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 240.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 255.255.255.255/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * @cliexend - * Example of how to display a single IPv4 FIB table: - * @cliexstart{show ip fib table 7} - * ipv4-VRF:7, fib_index 1, flow hash: src dst sport dport proto - * 0.0.0.0/0 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 0.0.0.0/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 172.16.1.0/24 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] - * [0] [@4]: ipv4-glean: af_packet0 - * 172.16.1.1/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] - * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 - * 172.16.1.2/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] - * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 - * 172.16.2.0/24 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] - * [0] [@4]: ipv4-glean: af_packet1 - * 172.16.2.1/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] - * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 - * 224.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 240.0.0.0/8 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * 255.255.255.255/32 - * unicast-ip4-chain - * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] - * [0] [@0]: dpo-drop ip6 - * @cliexend - * Example of how to display a summary of all IPv4 FIB tables: - * @cliexstart{show ip fib summary} - * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto - * Prefix length Count - * 0 1 - * 8 2 - * 32 4 - * ipv4-VRF:7, fib_index 1, flow hash: src dst sport dport proto - * Prefix length Count - * 0 1 - * 8 2 - * 24 2 - * 32 4 - * @cliexend - ?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip4_show_fib_command, static) = { - .path = "show ip fib", - .short_help = "show ip fib [summary] [table <table-id>] [index <fib-id>] [<ip4-addr>[/<mask>]] [mtrie]", - .function = ip4_show_fib, -}; -/* *INDENT-ON* */ |