diff options
Diffstat (limited to 'src/plugins/ioam/ip6/ioam_cache.c')
| -rw-r--r-- | src/plugins/ioam/ip6/ioam_cache.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/src/plugins/ioam/ip6/ioam_cache.c b/src/plugins/ioam/ip6/ioam_cache.c new file mode 100644 index 00000000000..9e90ff9a920 --- /dev/null +++ b/src/plugins/ioam/ip6/ioam_cache.c @@ -0,0 +1,386 @@ +/* + * Copyright (c) 2017 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. + */ +/* + *------------------------------------------------------------------ + * ioam_cache.c - ioam ip6 API / debug CLI handling + *------------------------------------------------------------------ + */ + +#include <vnet/vnet.h> +#include <vnet/plugin/plugin.h> +#include <ioam/ip6/ioam_cache.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vlibsocket/api.h> +#include <vnet/ip/ip6_hop_by_hop.h> + +#include "ioam_cache.h" + +/* define message IDs */ +#include <ioam/ip6/ioam_cache_msg_enum.h> + +/* define message structures */ +#define vl_typedefs +#include <ioam/ip6/ioam_cache_all_api_h.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <ioam/ip6/ioam_cache_all_api_h.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <ioam/ip6/ioam_cache_all_api_h.h> +#undef vl_printfun + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <ioam/ip6/ioam_cache_all_api_h.h> +#undef vl_api_version + +/* + * A handy macro to set up a message reply. + * Assumes that the following variables are available: + * mp - pointer to request message + * rmp - pointer to reply message type + * rv - return value + */ + +#define REPLY_MACRO(t) \ +do { \ + unix_shared_memory_queue_t * q = \ + vl_api_client_index_to_input_queue (mp->client_index); \ + if (!q) \ + return; \ + \ + rmp = vl_msg_api_alloc (sizeof (*rmp)); \ + rmp->_vl_msg_id = ntohs((t)+cm->msg_id_base); \ + rmp->context = mp->context; \ + rmp->retval = ntohl(rv); \ + \ + vl_msg_api_send_shmem (q, (u8 *)&rmp); \ +} while(0); + + +/* List of message types that this plugin understands */ + +#define foreach_ioam_cache_plugin_api_msg \ +_(IOAM_CACHE_IP6_ENABLE_DISABLE, ioam_cache_ip6_enable_disable) + +static u8 * +ioam_e2e_id_trace_handler (u8 * s, ip6_hop_by_hop_option_t * opt) +{ + ioam_e2e_id_option_t *e2e = (ioam_e2e_id_option_t *) opt; + + if (e2e) + { + s = + format (s, "IP6_HOP_BY_HOP E2E ID = %U\n", format_ip6_address, + &(e2e->id)); + } + + + return s; +} + +static u8 * +ioam_e2e_cache_trace_handler (u8 * s, ip6_hop_by_hop_option_t * opt) +{ + ioam_e2e_cache_option_t *e2e = (ioam_e2e_cache_option_t *) opt; + + if (e2e) + { + s = + format (s, "IP6_HOP_BY_HOP E2E CACHE = pool:%d idx:%d\n", + e2e->pool_id, e2e->pool_index); + } + + + return s; +} + +/* Action function shared between message handler and debug CLI */ +int +ioam_cache_ip6_enable_disable (ioam_cache_main_t * em, u8 is_disable) +{ + vlib_main_t *vm = em->vlib_main; + + if (is_disable == 0) + { + ioam_cache_table_init (vm); + ip6_hbh_set_next_override (em->cache_hbh_slot); + ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID, + 0, ioam_e2e_id_trace_handler); + ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID, + 0, ioam_e2e_cache_trace_handler); + + } + else + { + ip6_hbh_set_next_override (IP6_LOOKUP_NEXT_POP_HOP_BY_HOP); + ioam_cache_table_destroy (vm); + ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID); + ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID); + } + + return 0; +} + +/* Action function shared between message handler and debug CLI */ +int +ioam_tunnel_select_ip6_enable_disable (ioam_cache_main_t * em, + u8 criteria, + u8 no_of_responses, u8 is_disable) +{ + vlib_main_t *vm = em->vlib_main; + + if (is_disable == 0) + { + ioam_cache_ts_table_init (vm); + em->criteria_oneway = criteria; + em->wait_for_responses = no_of_responses; + ip6_hbh_set_next_override (em->ts_hbh_slot); + ip6_ioam_ts_cache_set_rewrite (); + ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID, + 0, ioam_e2e_id_trace_handler); + ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID, + 0, ioam_e2e_cache_trace_handler); + + /* Turn on the cleanup process */ + // vlib_process_signal_event (vm, em->cleanup_process_node_index, 1, 0); + } + else + { + ioam_cache_ts_timer_node_enable (vm, 0); + ip6_hbh_set_next_override (IP6_LOOKUP_NEXT_POP_HOP_BY_HOP); + ioam_cache_ts_table_destroy (vm); + ip6_ioam_ts_cache_cleanup_rewrite (); + ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID); + ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID); + } + + return 0; +} + +/* API message handler */ +static void vl_api_ioam_cache_ip6_enable_disable_t_handler + (vl_api_ioam_cache_ip6_enable_disable_t * mp) +{ + vl_api_ioam_cache_ip6_enable_disable_reply_t *rmp; + ioam_cache_main_t *cm = &ioam_cache_main; + int rv; + + rv = ioam_cache_ip6_enable_disable (cm, (int) (mp->is_disable)); + REPLY_MACRO (VL_API_IOAM_CACHE_IP6_ENABLE_DISABLE_REPLY); +} + +/* Set up the API message handling tables */ +static clib_error_t * +ioam_cache_plugin_api_hookup (vlib_main_t * vm) +{ + ioam_cache_main_t *sm = &ioam_cache_main; +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \ + #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_ioam_cache_plugin_api_msg; +#undef _ + + return 0; +} + +static clib_error_t * +set_ioam_cache_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + ioam_cache_main_t *em = &ioam_cache_main; + u8 is_disable = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "disable")) + is_disable = 1; + else + break; + } + ioam_cache_ip6_enable_disable (em, is_disable); + + return 0; +} + +/* *INDENT_OFF* */ +VLIB_CLI_COMMAND (set_ioam_cache_command, static) = +{ +.path = "set ioam ip6 cache",.short_help = + "set ioam ip6 cache [disable]",.function = set_ioam_cache_command_fn}; +/* *INDENT_ON* */ + +#define IOAM_TS_WAIT_FOR_RESPONSES 3 +static clib_error_t * +set_ioam_tunnel_select_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + ioam_cache_main_t *em = &ioam_cache_main; + u8 is_disable = 0; + u8 one_way = 0; + u8 no_of_responses = IOAM_TS_WAIT_FOR_RESPONSES; + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "disable")) + is_disable = 1; + else if (unformat (input, "rtt")) + one_way = 0; + else if (unformat (input, "oneway")) + one_way = 1; + else if (unformat (input, "wait_for_responses %d", &no_of_responses)) + ; + else + break; + } + + ioam_tunnel_select_ip6_enable_disable (em, one_way, no_of_responses, + is_disable); + + return 0; +} + +/* *INDENT_OFF* */ +VLIB_CLI_COMMAND (set_ioam_cache_ts_command, static) = +{ +.path = "set ioam ip6 sr-tunnel-select",.short_help = + "set ioam ip6 sr-tunnel-select [disable] [oneway|rtt] [wait_for_responses <n|default 3>]",.function + = set_ioam_tunnel_select_command_fn}; +/* *INDENT_ON* */ + +static void +ioam_cache_table_print (vlib_main_t * vm, u8 verbose) +{ + ioam_cache_main_t *cm = &ioam_cache_main; + ioam_cache_entry_t *entry = 0; + ioam_cache_ts_entry_t *ts_entry = 0; + int no_of_threads = vec_len (vlib_worker_threads); + int i; + + pool_foreach (entry, cm->ioam_rewrite_pool, ( + { + vlib_cli_output (vm, "%U", + format_ioam_cache_entry, + entry); + })); + + if (cm->ts_stats) + for (i = 0; i < no_of_threads; i++) + { + vlib_cli_output (vm, "Number of entries in thread-%d selection pool: %lu\n \ + (pool found to be full: %lu times)", i, + cm->ts_stats[i].inuse, cm->ts_stats[i].add_failed); + + if (verbose == 1) + vlib_worker_thread_barrier_sync (vm); + pool_foreach (ts_entry, cm->ioam_ts_pool[i], ( + { + vlib_cli_output (vm, + "%U", + format_ioam_cache_ts_entry, + ts_entry, + (u32) + i); + } + )); + vlib_worker_thread_barrier_release (vm); + } + +} + +static clib_error_t * +show_ioam_cache_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 verbose = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "verbose")) + verbose = 1; + } + ioam_cache_table_print (vm, verbose); + + + return 0; +} + +/* *INDENT_OFF* */ +VLIB_CLI_COMMAND (show_ioam_cache_command, static) = +{ +.path = "show ioam ip6 cache",.short_help = + "show ioam ip6 cache [verbose]",.function = show_ioam_cache_command_fn}; +/* *INDENT_ON* */ + +static clib_error_t * +ioam_cache_init (vlib_main_t * vm) +{ + ioam_cache_main_t *em = &ioam_cache_main; + clib_error_t *error = 0; + u8 *name; + u32 cache_node_index = ioam_cache_node.index; + u32 ts_node_index = ioam_cache_ts_node.index; + vlib_node_t *ip6_hbyh_node = NULL, *ip6_hbh_pop_node = NULL, *error_node = + NULL; + + name = format (0, "ioam_cache_%08x%c", api_version, 0); + + memset (&ioam_cache_main, 0, sizeof (ioam_cache_main)); + /* Ask for a correctly-sized block of API message decode slots */ + em->msg_id_base = vl_msg_api_get_msg_ids + ((char *) name, VL_MSG_FIRST_AVAILABLE); + + error = ioam_cache_plugin_api_hookup (vm); + /* Hook this node to ip6-hop-by-hop */ + ip6_hbyh_node = vlib_get_node_by_name (vm, (u8 *) "ip6-hop-by-hop"); + em->cache_hbh_slot = + vlib_node_add_next (vm, ip6_hbyh_node->index, cache_node_index); + em->ts_hbh_slot = + vlib_node_add_next (vm, ip6_hbyh_node->index, ts_node_index); + + ip6_hbh_pop_node = vlib_get_node_by_name (vm, (u8 *) "ip6-pop-hop-by-hop"); + em->ip6_hbh_pop_node_index = ip6_hbh_pop_node->index; + + error_node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + em->error_node_index = error_node->index; + em->vlib_main = vm; + + vec_free (name); + + return error; +} + +VLIB_INIT_FUNCTION (ioam_cache_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |