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-rw-r--r--vnet/vnet/adj/adj.c454
1 files changed, 0 insertions, 454 deletions
diff --git a/vnet/vnet/adj/adj.c b/vnet/vnet/adj/adj.c
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--- a/vnet/vnet/adj/adj.c
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-/*
- * 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/adj/adj.h>
-#include <vnet/adj/adj_internal.h>
-#include <vnet/adj/adj_glean.h>
-#include <vnet/adj/adj_midchain.h>
-#include <vnet/fib/fib_node_list.h>
-
-/*
- * Special Adj with index zero. we need to define this since the v4 mtrie
- * assumes an index of 0 implies the ply is empty. therefore all 'real'
- * adjs need a non-zero index.
- */
-static ip_adjacency_t *special_v4_miss_adj_with_index_zero;
-
-/* Adjacency packet/byte counters indexed by adjacency index. */
-vlib_combined_counter_main_t adjacency_counters;
-
-/*
- * the single adj pool
- */
-ip_adjacency_t *adj_pool;
-
-always_inline void
-adj_poison (ip_adjacency_t * adj)
-{
- if (CLIB_DEBUG > 0)
- {
- memset (adj, 0xfe, sizeof (adj[0]));
- }
-}
-
-ip_adjacency_t *
-adj_alloc (fib_protocol_t proto)
-{
- ip_adjacency_t *adj;
-
- pool_get(adj_pool, adj);
-
- adj_poison(adj);
-
- /* Make sure certain fields are always initialized. */
- /* Validate adjacency counters. */
- vlib_validate_combined_counter(&adjacency_counters,
- adj_get_index(adj));
-
- adj->rewrite_header.sw_if_index = ~0;
- adj->mcast_group_index = ~0;
- adj->saved_lookup_next_index = 0;
- adj->n_adj = 1;
- adj->lookup_next_index = 0;
-
- fib_node_init(&adj->ia_node,
- FIB_NODE_TYPE_ADJ);
- adj->ia_nh_proto = proto;
- adj->ia_flags = 0;
-
- ip4_main.lookup_main.adjacency_heap = adj_pool;
- ip6_main.lookup_main.adjacency_heap = adj_pool;
-
- return (adj);
-}
-
-static int
-adj_index_is_special (adj_index_t adj_index)
-{
- if (ADJ_INDEX_INVALID == adj_index)
- return (!0);
-
- return (0);
-}
-
-/**
- * @brief Pretty print helper function for formatting specific adjacencies.
- * @param s - input string to format
- * @param args - other args passed to format function such as:
- * - vnet_main_t
- * - ip_lookup_main_t
- * - adj_index
- */
-u8 *
-format_ip_adjacency (u8 * s, va_list * args)
-{
- format_ip_adjacency_flags_t fiaf;
- ip_adjacency_t * adj;
- u32 adj_index;
-
- adj_index = va_arg (*args, u32);
- fiaf = va_arg (*args, format_ip_adjacency_flags_t);
- adj = adj_get(adj_index);
-
- switch (adj->lookup_next_index)
- {
- case IP_LOOKUP_NEXT_REWRITE:
- s = format (s, "%U", format_adj_nbr, adj_index, 0);
- break;
- case IP_LOOKUP_NEXT_ARP:
- s = format (s, "%U", format_adj_nbr_incomplete, adj_index, 0);
- break;
- case IP_LOOKUP_NEXT_GLEAN:
- s = format (s, "%U", format_adj_glean, adj_index, 0);
- break;
- case IP_LOOKUP_NEXT_MIDCHAIN:
- s = format (s, "%U", format_adj_midchain, adj_index, 2);
- break;
- default:
- break;
- }
-
- if (fiaf & FORMAT_IP_ADJACENCY_DETAIL)
- {
- s = format (s, "\n locks:%d", adj->ia_node.fn_locks);
- s = format (s, " node:[%d]:%U",
- adj->rewrite_header.node_index,
- format_vlib_node_name, vlib_get_main(),
- adj->rewrite_header.node_index);
- s = format (s, " next:[%d]:%U",
- adj->rewrite_header.next_index,
- format_vlib_next_node_name,
- vlib_get_main(),
- adj->rewrite_header.node_index,
- adj->rewrite_header.next_index);
- s = format(s, "\n children:\n ");
- s = fib_node_children_format(adj->ia_node.fn_children, s);
- }
-
- return s;
-}
-
-/*
- * adj_last_lock_gone
- *
- * last lock/reference to the adj has gone, we no longer need it.
- */
-static void
-adj_last_lock_gone (ip_adjacency_t *adj)
-{
- vlib_main_t * vm = vlib_get_main();
-
- ASSERT(0 == fib_node_list_get_size(adj->ia_node.fn_children));
- ADJ_DBG(adj, "last-lock-gone");
-
- vlib_worker_thread_barrier_sync (vm);
-
- switch (adj->lookup_next_index)
- {
- case IP_LOOKUP_NEXT_MIDCHAIN:
- dpo_reset(&adj->sub_type.midchain.next_dpo);
- /* FALL THROUGH */
- case IP_LOOKUP_NEXT_ARP:
- case IP_LOOKUP_NEXT_REWRITE:
- /*
- * complete and incomplete nbr adjs
- */
- adj_nbr_remove(adj_get_index(adj),
- adj->ia_nh_proto,
- adj->ia_link,
- &adj->sub_type.nbr.next_hop,
- adj->rewrite_header.sw_if_index);
- break;
- case IP_LOOKUP_NEXT_GLEAN:
- adj_glean_remove(adj->ia_nh_proto,
- adj->rewrite_header.sw_if_index);
- break;
- default:
- /*
- * type not stored in any DB from which we need to remove it
- */
- break;
- }
-
- vlib_worker_thread_barrier_release(vm);
-
- fib_node_deinit(&adj->ia_node);
- pool_put(adj_pool, adj);
-}
-
-void
-adj_lock (adj_index_t adj_index)
-{
- ip_adjacency_t *adj;
-
- if (adj_index_is_special(adj_index))
- {
- return;
- }
-
- adj = adj_get(adj_index);
- ASSERT(adj);
-
- ADJ_DBG(adj, "lock");
- fib_node_lock(&adj->ia_node);
-}
-
-void
-adj_unlock (adj_index_t adj_index)
-{
- ip_adjacency_t *adj;
-
- if (adj_index_is_special(adj_index))
- {
- return;
- }
-
- adj = adj_get(adj_index);
- ASSERT(adj);
-
- ADJ_DBG(adj, "unlock");
- ASSERT(adj);
-
- fib_node_unlock(&adj->ia_node);
-}
-
-u32
-adj_child_add (adj_index_t adj_index,
- fib_node_type_t child_type,
- fib_node_index_t child_index)
-{
- ASSERT(ADJ_INDEX_INVALID != adj_index);
- if (adj_index_is_special(adj_index))
- {
- return (~0);
- }
-
- return (fib_node_child_add(FIB_NODE_TYPE_ADJ,
- adj_index,
- child_type,
- child_index));
-}
-
-void
-adj_child_remove (adj_index_t adj_index,
- u32 sibling_index)
-{
- if (adj_index_is_special(adj_index))
- {
- return;
- }
-
- fib_node_child_remove(FIB_NODE_TYPE_ADJ,
- adj_index,
- sibling_index);
-}
-
-/**
- * @brief Return the link type of the adjacency
- */
-vnet_link_t
-adj_get_link_type (adj_index_t ai)
-{
- const ip_adjacency_t *adj;
-
- adj = adj_get(ai);
-
- return (adj->ia_link);
-}
-
-/**
- * @brief Return the sw interface index of the adjacency.
- */
-u32
-adj_get_sw_if_index (adj_index_t ai)
-{
- const ip_adjacency_t *adj;
-
- adj = adj_get(ai);
-
- return (adj->rewrite_header.sw_if_index);
-}
-
-/**
- * @brief Return the link type of the adjacency
- */
-const u8*
-adj_get_rewrite (adj_index_t ai)
-{
- vnet_rewrite_header_t *rw;
- ip_adjacency_t *adj;
-
- adj = adj_get(ai);
- rw = &adj->rewrite_header;
-
- ASSERT (rw->data_bytes != 0xfefe);
-
- return (rw->data - rw->data_bytes);
-}
-
-static fib_node_t *
-adj_get_node (fib_node_index_t index)
-{
- ip_adjacency_t *adj;
-
- adj = adj_get(index);
-
- return (&adj->ia_node);
-}
-
-#define ADJ_FROM_NODE(_node) \
- ((ip_adjacency_t*)((char*)_node - STRUCT_OFFSET_OF(ip_adjacency_t, ia_node)))
-
-static void
-adj_node_last_lock_gone (fib_node_t *node)
-{
- adj_last_lock_gone(ADJ_FROM_NODE(node));
-}
-
-static fib_node_back_walk_rc_t
-adj_back_walk_notify (fib_node_t *node,
- fib_node_back_walk_ctx_t *ctx)
-{
- /*
- * Que pasa. yo soj en el final!
- */
- ASSERT(0);
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-/*
- * Adjacency's graph node virtual function table
- */
-static const fib_node_vft_t adj_vft = {
- .fnv_get = adj_get_node,
- .fnv_last_lock = adj_node_last_lock_gone,
- .fnv_back_walk = adj_back_walk_notify,
-};
-
-static clib_error_t *
-adj_module_init (vlib_main_t * vm)
-{
- fib_node_register_type(FIB_NODE_TYPE_ADJ, &adj_vft);
-
- adj_nbr_module_init();
- adj_glean_module_init();
- adj_midchain_module_init();
-
- /*
- * one special adj to reserve index 0
- */
- special_v4_miss_adj_with_index_zero = adj_alloc(FIB_PROTOCOL_IP4);
-
- return (NULL);
-}
-
-VLIB_INIT_FUNCTION (adj_module_init);
-
-static clib_error_t *
-adj_show (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- adj_index_t ai = ADJ_INDEX_INVALID;
- u32 sw_if_index = ~0;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%d", &ai))
- ;
- else if (unformat (input, "%U",
- unformat_vnet_sw_interface, vnet_get_main(),
- &sw_if_index))
- ;
- else
- break;
- }
-
- if (ADJ_INDEX_INVALID != ai)
- {
- if (pool_is_free_index(adj_pool, ai))
- {
- vlib_cli_output (vm, "adjacency %d invalid", ai);
- return 0;
- }
-
- vlib_cli_output (vm, "[@%d] %U",
- ai,
- format_ip_adjacency, ai,
- FORMAT_IP_ADJACENCY_DETAIL);
- }
- else
- {
- /* *INDENT-OFF* */
- pool_foreach_index(ai, adj_pool,
- ({
- if (~0 != sw_if_index &&
- sw_if_index != adj_get_sw_if_index(ai))
- {
- }
- else
- {
- vlib_cli_output (vm, "[@%d] %U",
- ai,
- format_ip_adjacency, ai,
- FORMAT_IP_ADJACENCY_NONE);
- }
- }));
- /* *INDENT-ON* */
- }
-
- return 0;
-}
-
-/*?
- * Show all adjacencies.
- * @cliexpar
- * @cliexstart{sh adj}
- * [@0]
- * [@1] glean: loop0
- * [@2] ipv4 via 1.0.0.2 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
- * [@3] mpls via 1.0.0.2 loop0: MPLS_UNICAST: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
- * [@4] ipv4 via 1.0.0.3 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
- * [@5] mpls via 1.0.0.3 loop0: MPLS_UNICAST: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc
- * @cliexend
- ?*/
-VLIB_CLI_COMMAND (adj_show_command, static) = {
- .path = "show adj",
- .short_help = "show adj [<adj_index>] [interface]",
- .function = adj_show,
-};
-
-/*
- * DEPRECATED: DO NOT USE
- */
-ip_adjacency_t *
-ip_add_adjacency (ip_lookup_main_t * lm,
- ip_adjacency_t * copy_adj,
- u32 n_adj,
- u32 * adj_index_return)
-{
- ip_adjacency_t * adj;
-
- ASSERT(1==n_adj);
-
- adj = adj_alloc(FIB_PROTOCOL_IP4);
-
- if (copy_adj)
- *adj = *copy_adj;
-
- *adj_index_return = adj_get_index(adj);
- return adj;
-}