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Diffstat (limited to 'src/vlibapi/node_unserialize.c')
| -rw-r--r-- | src/vlibapi/node_unserialize.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/vlibapi/node_unserialize.c b/src/vlibapi/node_unserialize.c new file mode 100644 index 00000000..bb0edfed --- /dev/null +++ b/src/vlibapi/node_unserialize.c @@ -0,0 +1,227 @@ +/* + * 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 <vlib/vlib.h> + +#include <vppinfra/serialize.h> + +/* serialized representation of state strings */ + +#define foreach_state_string_code \ +_(STATE_DONE, "done") \ +_(STATE_DISABLED, "disabled") \ +_(STATE_TIME_WAIT, "time wait") \ +_(STATE_EVENT_WAIT, "event wait") \ +_(STATE_ANY_WAIT, "any wait") \ +_(STATE_POLLING, "polling") \ +_(STATE_INTERRUPT_WAIT, "interrupt wait") \ +_(STATE_INTERNAL, "internal") + +typedef enum +{ +#define _(a,b) a, + foreach_state_string_code +#undef _ +} state_string_enum_t; + +static char *state_strings[] = { +#define _(a,b) b, + foreach_state_string_code +#undef _ +}; + +vlib_node_t *** +vlib_node_unserialize (u8 * vector) +{ + serialize_main_t _sm, *sm = &_sm; + u32 nnodes, nnexts; + u32 nstat_vms; + vlib_node_t *node; + vlib_node_t **nodes; + vlib_node_t ***nodes_by_thread = 0; + int i, j, k; + u64 l, v, c, d; + state_string_enum_t state_code; + int stats_present; + + serialize_open_vector (sm, vector); + + nstat_vms = unserialize_likely_small_unsigned_integer (sm); + + vec_validate (nodes_by_thread, nstat_vms - 1); + _vec_len (nodes_by_thread) = 0; + + for (i = 0; i < nstat_vms; i++) + { + nnodes = unserialize_likely_small_unsigned_integer (sm); + + nodes = 0; + vec_validate (nodes, nnodes - 1); + vec_add1 (nodes_by_thread, nodes); + + for (j = 0; j < nnodes; j++) + { + node = 0; + vec_validate (node, 0); + nodes[j] = node; + + unserialize_cstring (sm, (char **) &(node->name)); + state_code = unserialize_likely_small_unsigned_integer (sm); + node->state_string = (u8 *) state_strings[state_code]; + + node->type = unserialize_likely_small_unsigned_integer (sm); + nnexts = unserialize_likely_small_unsigned_integer (sm); + if (nnexts > 0) + vec_validate (node->next_nodes, nnexts - 1); + for (k = 0; k < nnexts; k++) + node->next_nodes[k] = + unserialize_likely_small_unsigned_integer (sm); + + stats_present = unserialize_likely_small_unsigned_integer (sm); + + if (stats_present) + { + /* total clocks */ + unserialize_integer (sm, &l, 8); + node->stats_total.clocks = l; + node->stats_last_clear.clocks = 0; + + /* Total calls */ + unserialize_integer (sm, &c, 8); + node->stats_total.calls = c; + + /* Total vectors */ + unserialize_integer (sm, &v, 8); + node->stats_total.vectors = v; + + /* Total suspends */ + unserialize_integer (sm, &d, 8); + node->stats_total.suspends = d; + } + } + } + return nodes_by_thread; +} + +#if TEST_CODE + +static clib_error_t * +test_node_serialize_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vlib_node_main_t *nm = &vm->node_main; + u8 *vector = 0; + vlib_node_t ***nodes_by_thread; + vlib_node_t **nodes; + vlib_node_t *node; + vlib_node_t *next_node; + int i, j, k; + u32 max_threads = (u32) ~ 0; + int include_nexts = 0; + int include_stats = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "max-threads %d", &max_threads)) + ; + else if (unformat (input, "stats")) + include_stats = 1; + else if (unformat (input, "nexts")) + include_nexts = 1; + else + break; + } + + /* + * Keep the number of memcpy ops to a minimum (e.g. 1). + * The current size of the serialized vector is + * slightly under 4K. + */ + vec_validate (vector, 16383); + vec_reset_length (vector); + + vector = vlib_node_serialize (nm, vector, max_threads, + include_nexts, include_stats); + + vlib_cli_output (vm, "result vector %d bytes", vec_len (vector)); + + nodes_by_thread = vlib_node_unserialize (vector); + + vec_free (vector); + + for (i = 0; i < vec_len (nodes_by_thread); i++) + { + nodes = nodes_by_thread[i]; + + vlib_cli_output (vm, "thread %d", i); + + for (j = 0; j < vec_len (nodes); j++) + { + node = nodes[j]; + + vlib_cli_output (vm, "[%d] %s state %s", j, node->name, + node->state_string); + + vlib_cli_output + (vm, " clocks %lld calls %lld suspends" + " %lld vectors %lld", + node->stats_total.clocks, + node->stats_total.calls, + node->stats_total.suspends, node->stats_total.vectors); + + for (k = 0; k < vec_len (node->next_nodes); k++) + { + if (node->next_nodes[k] != ~0) + { + next_node = nodes[node->next_nodes[k]]; + vlib_cli_output (vm, " [%d] %s", k, next_node->name); + } + } + } + } + + for (j = 0; j < vec_len (nodes_by_thread); j++) + { + nodes = nodes_by_thread[j]; + + for (i = 0; i < vec_len (nodes); i++) + { + vec_free (nodes[i]->name); + vec_free (nodes[i]->next_nodes); + vec_free (nodes[i]); + } + vec_free (nodes); + } + vec_free (nodes_by_thread); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (test_node_serialize_node, static) = { + .path = "test node serialize", + .short_help = "test node serialize [max-threads NN] nexts stats", + .function = test_node_serialize_command_fn, +}; +/* *INDENT-ON* */ +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |