diff options
Diffstat (limited to 'src/vpp/api/gmon.c')
| -rw-r--r-- | src/vpp/api/gmon.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/src/vpp/api/gmon.c b/src/vpp/api/gmon.c new file mode 100644 index 00000000..6b333730 --- /dev/null +++ b/src/vpp/api/gmon.c @@ -0,0 +1,306 @@ +/* + * Copyright (c) 2012 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 <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <netinet/in.h> +#include <signal.h> +#include <pthread.h> +#include <unistd.h> +#include <time.h> +#include <fcntl.h> +#include <string.h> +#include <vppinfra/clib.h> +#include <vppinfra/vec.h> +#include <vppinfra/hash.h> +#include <vppinfra/bitmap.h> +#include <vppinfra/fifo.h> +#include <vppinfra/time.h> +#include <vppinfra/mheap.h> +#include <vppinfra/heap.h> +#include <vppinfra/pool.h> +#include <vppinfra/format.h> +#include <vlibapi/api.h> +#include <vlibmemory/api.h> + +#include <vlib/vlib.h> +#include <vlib/unix/unix.h> +#include <vnet/api_errno.h> + +#include <svm/svmdb.h> + +typedef struct +{ + svmdb_client_t *svmdb_client; + f64 *vector_rate_ptr; + f64 *input_rate_ptr; + f64 *sig_error_rate_ptr; + pid_t *vpef_pid_ptr; + u64 last_sig_errors; + u64 current_sig_errors; + uword *sig_error_bitmap; + vlib_main_t *vlib_main; + vlib_main_t **my_vlib_mains; + +} gmon_main_t; + +#include <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vnet/devices/devices.h> + +gmon_main_t gmon_main; + +static u64 +get_significant_errors (gmon_main_t * gm) +{ + vlib_main_t *this_vlib_main; + vlib_error_main_t *em; + uword code; + int vm_index; + u64 significant_errors = 0; + + /* *INDENT-OFF* */ + clib_bitmap_foreach (code, gm->sig_error_bitmap, + ({ + for (vm_index = 0; vm_index < vec_len (gm->my_vlib_mains); vm_index++) + { + this_vlib_main = gm->my_vlib_mains[vm_index]; + em = &this_vlib_main->error_main; + significant_errors += em->counters[code] - + ((vec_len(em->counters_last_clear) > code) ? + em->counters_last_clear[code] : 0); + } + })); + /* *INDENT-ON* */ + + return (significant_errors); +} + +static clib_error_t * +publish_pid (vlib_main_t * vm) +{ + gmon_main_t *gm = &gmon_main; + + *gm->vpef_pid_ptr = getpid (); + + return 0; +} + +VLIB_API_INIT_FUNCTION (publish_pid); + + +static uword +gmon_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + f64 vector_rate; + u64 input_packets, last_input_packets, new_sig_errors; + f64 last_runtime, dt, now; + gmon_main_t *gm = &gmon_main; + int i; + + last_runtime = 0.0; + last_input_packets = 0; + + last_runtime = 0.0; + last_input_packets = 0; + + /* Initial wait for the world to settle down */ + vlib_process_suspend (vm, 5.0); + + for (i = 0; i < vec_len (vlib_mains); i++) + vec_add1 (gm->my_vlib_mains, vlib_mains[i]); + + while (1) + { + vlib_process_suspend (vm, 5.0); + vector_rate = vlib_last_vector_length_per_node (vm); + *gm->vector_rate_ptr = vector_rate; + now = vlib_time_now (vm); + dt = now - last_runtime; + input_packets = vnet_get_aggregate_rx_packets (); + *gm->input_rate_ptr = (f64) (input_packets - last_input_packets) / dt; + last_runtime = now; + last_input_packets = input_packets; + + new_sig_errors = get_significant_errors (gm); + *gm->sig_error_rate_ptr = + ((f64) (new_sig_errors - gm->last_sig_errors)) / dt; + gm->last_sig_errors = new_sig_errors; + } + + return 0; /* not so much */ +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (gmon_process_node,static) = { + .function = gmon_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "gmon-process", +}; +/* *INDENT-ON* */ + +static clib_error_t * +gmon_init (vlib_main_t * vm) +{ + gmon_main_t *gm = &gmon_main; + api_main_t *am = &api_main; + pid_t *swp = 0; + f64 *v = 0; + clib_error_t *error; + svmdb_map_args_t _ma, *ma = &_ma; + + if ((error = vlib_call_init_function (vm, vpe_api_init))) + return (error); + + if ((error = vlib_call_init_function (vm, vlibmemory_init))) + return (error); + + gm->vlib_main = vm; + + memset (ma, 0, sizeof (*ma)); + ma->root_path = am->root_path; + ma->uid = am->api_uid; + ma->gid = am->api_gid; + + gm->svmdb_client = svmdb_map (ma); + + /* Find or create, set to zero */ + vec_add1 (v, 0.0); + svmdb_local_set_vec_variable (gm->svmdb_client, + "vpp_vector_rate", (char *) v, sizeof (*v)); + vec_free (v); + vec_add1 (v, 0.0); + svmdb_local_set_vec_variable (gm->svmdb_client, + "vpp_input_rate", (char *) v, sizeof (*v)); + vec_free (v); + vec_add1 (v, 0.0); + svmdb_local_set_vec_variable (gm->svmdb_client, + "vpp_sig_error_rate", + (char *) v, sizeof (*v)); + vec_free (v); + + vec_add1 (swp, 0.0); + svmdb_local_set_vec_variable (gm->svmdb_client, + "vpp_pid", (char *) swp, sizeof (*swp)); + vec_free (swp); + + /* the value cells will never move, so acquire references to them */ + gm->vector_rate_ptr = + svmdb_local_get_variable_reference (gm->svmdb_client, + SVMDB_NAMESPACE_VEC, + "vpp_vector_rate"); + gm->input_rate_ptr = + svmdb_local_get_variable_reference (gm->svmdb_client, + SVMDB_NAMESPACE_VEC, + "vpp_input_rate"); + gm->sig_error_rate_ptr = + svmdb_local_get_variable_reference (gm->svmdb_client, + SVMDB_NAMESPACE_VEC, + "vpp_sig_error_rate"); + gm->vpef_pid_ptr = + svmdb_local_get_variable_reference (gm->svmdb_client, + SVMDB_NAMESPACE_VEC, "vpp_pid"); + return 0; +} + +VLIB_INIT_FUNCTION (gmon_init); + +static clib_error_t * +gmon_exit (vlib_main_t * vm) +{ + gmon_main_t *gm = &gmon_main; + + if (gm->vector_rate_ptr) + { + *gm->vector_rate_ptr = 0.0; + *gm->vpef_pid_ptr = 0; + *gm->input_rate_ptr = 0.0; + *gm->sig_error_rate_ptr = 0.0; + svm_region_unmap ((void *) gm->svmdb_client->db_rp); + vec_free (gm->svmdb_client); + } + return 0; +} + +VLIB_MAIN_LOOP_EXIT_FUNCTION (gmon_exit); + +static int +significant_error_enable_disable (gmon_main_t * gm, u32 index, int enable) +{ + vlib_main_t *vm = gm->vlib_main; + vlib_error_main_t *em = &vm->error_main; + + if (index >= vec_len (em->counters)) + return VNET_API_ERROR_NO_SUCH_ENTRY; + + gm->sig_error_bitmap = + clib_bitmap_set (gm->sig_error_bitmap, index, enable); + return 0; +} + +static clib_error_t * +set_significant_error_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u32 index; + int enable = 1; + int rv; + gmon_main_t *gm = &gmon_main; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "%d", &index)) + ; + else if (unformat (input, "disable")) + enable = 0; + else + return clib_error_return (0, "unknown input `%U'", + format_unformat_error, input); + } + + rv = significant_error_enable_disable (gm, index, enable); + + switch (rv) + { + case 0: + break; + + default: + return clib_error_return + (0, "significant_error_enable_disable returned %d", rv); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_significant_error_command, static) = { + .path = "set significant error", + .short_help = "set significant error <counter-index-nnn> [disable]", + .function = set_significant_error_command_fn, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |