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authorEd Warnicke <eaw@cisco.com>2015-12-08 15:45:58 -0700
committerEd Warnicke <eaw@cisco.com>2015-12-08 15:47:27 -0700
commitcb9cadad578297ffd78fa8a33670bdf1ab669e7e (patch)
tree6ac2be912482cc7849a26f0ab845561c3d7f4e26 /vlib-api/vlibmemory/memory_vlib.c
parentfb0815d4ae4bb0fe27bd9313f34b45c8593b907e (diff)
Initial commit of vpp code.v1.0.0
Change-Id: Ib246f1fbfce93274020ee93ce461e3d8bd8b9f17 Signed-off-by: Ed Warnicke <eaw@cisco.com>
Diffstat (limited to 'vlib-api/vlibmemory/memory_vlib.c')
-rw-r--r--vlib-api/vlibmemory/memory_vlib.c1124
1 files changed, 1124 insertions, 0 deletions
diff --git a/vlib-api/vlibmemory/memory_vlib.c b/vlib-api/vlibmemory/memory_vlib.c
new file mode 100644
index 00000000000..165cdf30f20
--- /dev/null
+++ b/vlib-api/vlibmemory/memory_vlib.c
@@ -0,0 +1,1124 @@
+/*
+ *------------------------------------------------------------------
+ * memory_vlib.c
+ *
+ * Copyright (c) 2009 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 <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <pthread.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/pool.h>
+#include <vppinfra/format.h>
+#include <vppinfra/byte_order.h>
+#include <vppinfra/elog.h>
+#include <stdarg.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+#define TRACE_VLIB_MEMORY_QUEUE 0
+
+#include <vlibmemory/vl_memory_msg_enum.h> /* enumerate all vlib messages */
+
+#define vl_typedefs /* define message structures */
+#include <vlibmemory/vl_memory_api_h.h>
+#undef vl_typedefs
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vlibmemory/vl_memory_api_h.h>
+#undef vl_printfun
+
+static inline void *
+vl_api_memclnt_create_t_print (vl_api_memclnt_create_t *a,void *handle)
+{
+ vl_print(handle, "vl_api_memclnt_create_t:\n");
+ vl_print(handle, "name: %s\n", a->name);
+ vl_print(handle, "input_queue: 0x%wx\n", a->input_queue);
+ vl_print(handle, "context: %u\n", (unsigned) a->context);
+ vl_print(handle, "ctx_quota: %ld\n", (long) a->ctx_quota);
+ return handle;
+}
+
+static inline void *
+vl_api_memclnt_delete_t_print (vl_api_memclnt_delete_t *a,void *handle)
+{
+ vl_print(handle, "vl_api_memclnt_delete_t:\n");
+ vl_print(handle, "index: %u\n", (unsigned) a->index);
+ vl_print(handle, "handle: 0x%wx\n", a->handle);
+ return handle;
+}
+
+/* instantiate all the endian swap functions we know about */
+#define vl_endianfun
+#include <vlibmemory/vl_memory_api_h.h>
+#undef vl_endianfun
+
+void vl_socket_api_send (vl_api_registration_t *rp, u8 *elem)
+ __attribute__((weak));
+
+void
+vl_socket_api_send (vl_api_registration_t *rp, u8 *elem)
+{
+ static int count;
+
+ if (count++ < 5)
+ clib_warning ("need to link against -lvlibsocket, msg not sent!");
+}
+
+void vl_msg_api_send (vl_api_registration_t *rp, u8 *elem)
+{
+ if (PREDICT_FALSE(rp->registration_type > REGISTRATION_TYPE_SHMEM)) {
+ vl_socket_api_send (rp, elem);
+ } else {
+ vl_msg_api_send_shmem (rp->vl_input_queue, elem);
+ }
+}
+
+int vl_msg_api_version_check (vl_api_memclnt_create_t * mp)
+ __attribute__((weak));
+
+int vl_msg_api_version_check (vl_api_memclnt_create_t * mp) { return 0; }
+
+/*
+ * vl_api_memclnt_create_t_handler
+ */
+void vl_api_memclnt_create_t_handler (vl_api_memclnt_create_t *mp)
+{
+ vl_api_registration_t **regpp;
+ vl_api_registration_t *regp;
+ vl_api_memclnt_create_reply_t *rp;
+ svm_region_t *svm;
+ unix_shared_memory_queue_t *q;
+ int rv;
+ void *oldheap;
+ api_main_t *am = &api_main;
+
+ /* Indicate API version mismatch if appropriate */
+ rv = vl_msg_api_version_check (mp);
+
+ /*
+ * This is tortured. Maintain a vlib-address-space private
+ * pool of client registrations. We use the shared-memory virtual
+ * address of client structure as a handle, to allow direct
+ * manipulation of context quota vbls from the client library.
+ *
+ * This scheme causes trouble w/ API message trace replay, since
+ * some random VA from clib_mem_alloc() certainly won't
+ * occur in the Linux sim. The (very) few places
+ * that care need to use the pool index.
+ *
+ * Putting the registration object(s) into a pool in shared memory and
+ * using the pool index as a handle seems like a great idea.
+ * Unfortunately, each and every reference to that pool would need
+ * to be protected by a mutex:
+ *
+ * Client VLIB
+ * ------ ----
+ * convert pool index to
+ * pointer.
+ * <deschedule>
+ * expand pool
+ * <deschedule>
+ * kaboom!
+ */
+
+ pool_get(am->vl_clients, regpp);
+
+ svm = am->vlib_rp;
+
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap(svm);
+ *regpp = clib_mem_alloc(sizeof(vl_api_registration_t));
+
+ regp = *regpp;
+ memset(regp, 0, sizeof(*regp));
+ regp->registration_type = REGISTRATION_TYPE_SHMEM;
+ regp->vl_api_registration_pool_index = regpp - am->vl_clients;
+
+ q = regp->vl_input_queue = (unix_shared_memory_queue_t *)(uword)
+ mp->input_queue;
+
+ regp->name = format(0, "%s", mp->name);
+ vec_add1(regp->name, 0);
+
+ pthread_mutex_unlock(&svm->mutex);
+ svm_pop_heap (oldheap);
+
+ rp = vl_msg_api_alloc(sizeof(*rp));
+ rp->_vl_msg_id = ntohs(VL_API_MEMCLNT_CREATE_REPLY);
+ rp->handle = (uword)regp;
+ rp->index = vl_msg_api_handle_from_index_and_epoch
+ (regp->vl_api_registration_pool_index,
+ am->shmem_hdr->application_restarts);
+ rp->context = mp->context;
+ rp->response = ntohl(rv);
+
+ vl_msg_api_send_shmem(q, (u8 *)&rp);
+}
+
+/* Application callback to clean up leftover registrations from this client */
+int vl_api_memclnt_delete_callback (u32 client_index)
+ __attribute__((weak));
+
+int vl_api_memclnt_delete_callback (u32 client_index)
+{ return 0; }
+
+/*
+ * vl_api_memclnt_delete_t_handler
+ */
+void vl_api_memclnt_delete_t_handler (vl_api_memclnt_delete_t *mp)
+{
+ vl_api_registration_t **regpp;
+ vl_api_registration_t *regp;
+ vl_api_memclnt_delete_reply_t *rp;
+ svm_region_t *svm;
+ void *oldheap;
+ api_main_t *am = &api_main;
+ u32 handle, client_index, epoch;
+
+ handle = mp->index;
+
+ if (vl_api_memclnt_delete_callback (handle))
+ return;
+
+ epoch = vl_msg_api_handle_get_epoch (handle);
+ client_index = vl_msg_api_handle_get_index (handle);
+
+ if (epoch != (am->shmem_hdr->application_restarts & VL_API_EPOCH_MASK)) {
+ clib_warning
+ ("Stale clnt delete index %d old epoch %d cur epoch %d",
+ client_index, epoch,
+ (am->shmem_hdr->application_restarts & VL_API_EPOCH_MASK));
+ return;
+ }
+
+ regpp = am->vl_clients + client_index;
+
+ if (!pool_is_free(am->vl_clients, regpp)) {
+ regp = *regpp;
+ svm = am->vlib_rp;
+
+ /* $$$ check the input queue for e.g. punted sf's */
+
+ rp = vl_msg_api_alloc(sizeof(*rp));
+ rp->_vl_msg_id = ntohs(VL_API_MEMCLNT_DELETE_REPLY);
+ rp->handle = mp->handle;
+ rp->response = 1;
+
+ vl_msg_api_send_shmem (regp->vl_input_queue, (u8 *)&rp);
+
+ if (client_index != regp->vl_api_registration_pool_index) {
+ clib_warning ("mismatch client_index %d pool_index %d",
+ client_index, regp->vl_api_registration_pool_index);
+ vl_msg_api_free (rp);
+ return;
+ }
+
+ /* No dangling references, please */
+ *regpp = 0;
+
+ pool_put_index(am->vl_clients,
+ regp->vl_api_registration_pool_index);
+
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap(svm);
+ /* Poison the old registration */
+ memset (regp, 0xF1, sizeof (*regp));
+ clib_mem_free (regp);
+ pthread_mutex_unlock(&svm->mutex);
+ svm_pop_heap (oldheap);
+ } else {
+ clib_warning("unknown client ID %d", mp->index);
+ }
+}
+
+void vl_api_get_first_msg_id_t_handler (vl_api_get_first_msg_id_t * mp)
+{
+ vl_api_get_first_msg_id_reply_t * rmp;
+ unix_shared_memory_queue_t * q;
+ uword * p;
+ api_main_t *am = &api_main;
+ vl_api_msg_range_t * rp;
+ u8 name[64];
+ u16 first_msg_id = ~0;
+ int rv = -7; /* VNET_API_ERROR_INVALID_VALUE */
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (!q)
+ return;
+
+ if (am->msg_range_by_name == 0)
+ goto out;
+
+ strncpy ((char *)name, (char *) mp->name, ARRAY_LEN(name)-1);
+
+ p = hash_get_mem (am->msg_range_by_name, name);
+ if (p == 0)
+ goto out;
+
+ rp = vec_elt_at_index (am->msg_ranges, p[0]);
+
+ first_msg_id = rp->first_msg_id;
+ rv = 0;
+
+out:
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs(VL_API_GET_FIRST_MSG_ID_REPLY);
+ rmp->context = mp->context;
+ rmp->retval = ntohl(rv);
+ rmp->first_msg_id = ntohs(first_msg_id);
+ vl_msg_api_send_shmem (q, (u8 *)&rmp);
+}
+
+#define foreach_vlib_api_msg \
+_(MEMCLNT_CREATE, memclnt_create) \
+_(MEMCLNT_DELETE, memclnt_delete) \
+_(GET_FIRST_MSG_ID, get_first_msg_id)
+
+/*
+ * vl_api_init
+ */
+static int memory_api_init(char *region_name)
+{
+ int rv;
+ vl_msg_api_msg_config_t cfg;
+ vl_msg_api_msg_config_t *c = &cfg;
+
+ if ((rv = vl_map_shmem(region_name, 1 /* is_vlib */)) < 0)
+ return rv;
+
+#define _(N,n) do { \
+ c->id = VL_API_##N; \
+ c->name = #n; \
+ c->handler = vl_api_##n##_t_handler; \
+ c->cleanup = vl_noop_handler; \
+ c->endian = vl_api_##n##_t_endian; \
+ c->print = vl_api_##n##_t_print; \
+ c->size = sizeof(vl_api_##n##_t); \
+ c->traced = 1; /* trace, so these msgs print */ \
+ c->replay = 0; /* don't replay client create/delete msgs */ \
+ vl_msg_api_config(c);} while (0);
+
+ foreach_vlib_api_msg;
+#undef _
+
+ return 0;
+}
+
+#define foreach_histogram_bucket \
+_(400) \
+_(200) \
+_(100) \
+_(10)
+
+typedef enum {
+#define _(n) SLEEP_##n##_US,
+ foreach_histogram_bucket
+#undef _
+ SLEEP_N_BUCKETS,
+} histogram_index_t;
+
+static u64 vector_rate_histogram[SLEEP_N_BUCKETS];
+
+static void memclnt_queue_signal (int signum);
+static void memclnt_queue_callback (vlib_main_t *vm);
+
+static uword
+memclnt_process (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * f)
+{
+ uword mp;
+ vl_shmem_hdr_t *shm;
+ unix_shared_memory_queue_t *q;
+ clib_error_t *e;
+ int rv;
+ api_main_t *am = &api_main;
+ f64 dead_client_scan_time;
+ f64 sleep_time, start_time;
+ f64 vector_rate;
+
+ vlib_set_queue_signal_callback (vm, memclnt_queue_callback);
+ am->vlib_signal = SIGUSR1;
+ signal (am->vlib_signal, memclnt_queue_signal);
+
+ if ((rv = memory_api_init(am->region_name)) < 0) {
+ clib_warning("memory_api_init returned %d, wait for godot...", rv);
+ vlib_process_suspend (vm, 1e70);
+ }
+
+ shm = am->shmem_hdr;
+ ASSERT(shm);
+ q = shm->vl_input_queue;
+ ASSERT(q);
+
+ e = vlib_call_init_exit_functions
+ (vm, vm->api_init_function_registrations, 1 /* call_once */);
+ if (e)
+ clib_error_report (e);
+
+ sleep_time = 20.0;
+ dead_client_scan_time = vlib_time_now(vm) + 20.0;
+
+ /* $$$ pay attention to frame size, control CPU usage */
+ while (1) {
+ uword event_type __attribute__((unused));
+ i8 *headp;
+ int need_broadcast;
+
+ /*
+ * There's a reason for checking the queue before
+ * sleeping. If the vlib application crashes, it's entirely
+ * possible for a client to enqueue a connect request
+ * during the process restart interval.
+ *
+ * Unless some force of physics causes the new incarnation
+ * of the application to process the request, the client will
+ * sit and wait for Godot...
+ */
+ vector_rate = vlib_last_vector_length_per_node(vm);
+ start_time = vlib_time_now (vm);
+ while (1) {
+ pthread_mutex_lock (&q->mutex);
+ if (q->cursize == 0) {
+ pthread_mutex_unlock (&q->mutex);
+
+ if (TRACE_VLIB_MEMORY_QUEUE)
+ {
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "q-underflow: len %d",
+ .format_args = "i4",
+ };
+ struct { u32 len; } * ed;
+ ed = ELOG_DATA (&vm->elog_main, e);
+ ed->len = 0;
+ }
+ sleep_time = 20.0;
+ break;
+ }
+
+ headp = (i8 *) (q->data + sizeof(uword)*q->head);
+ memcpy (&mp, headp, sizeof(uword));
+
+ q->head++;
+ need_broadcast = (q->cursize == q->maxsize/2);
+ q->cursize--;
+
+ if (PREDICT_FALSE(q->head == q->maxsize))
+ q->head = 0;
+ pthread_mutex_unlock(&q->mutex);
+ if (need_broadcast)
+ (void) pthread_cond_broadcast(&q->condvar);
+
+ vl_msg_api_handler_with_vm_node (am, (void *)mp, vm, node);
+
+ /* Allow no more than 10us without a pause */
+ if (vlib_time_now(vm) > start_time + 10e-6) {
+ int index = SLEEP_400_US;
+ if (vector_rate > 40.0)
+ sleep_time = 400e-6;
+ else if (vector_rate > 20.0) {
+ index = SLEEP_200_US;
+ sleep_time = 200e-6;
+ } else if (vector_rate >= 1.0) {
+ index = SLEEP_100_US;
+ sleep_time = 100e-6;
+ }
+ else {
+ index = SLEEP_10_US;
+ sleep_time = 10e-6;
+ }
+ vector_rate_histogram[index] += 1;
+ break;
+ }
+ }
+
+ event_type = vlib_process_wait_for_event_or_clock (vm, sleep_time);
+ vlib_process_get_events (vm, 0 /* event_data */);
+
+ if (vlib_time_now (vm) > dead_client_scan_time) {
+ vl_api_registration_t **regpp;
+ vl_api_registration_t *regp;
+ unix_shared_memory_queue_t *q;
+ static u32 * dead_indices;
+ static u32 * confused_indices;
+
+ vec_reset_length (dead_indices);
+ vec_reset_length (confused_indices);
+
+ pool_foreach (regpp, am->vl_clients,
+ ({
+ regp = *regpp;
+
+ if (regp) {
+ q = regp->vl_input_queue;
+ if (kill (q->consumer_pid, 0) < 0) {
+ vec_add1(dead_indices, regpp - am->vl_clients);
+ }
+ } else {
+ clib_warning ("NULL client registration index %d",
+ regpp - am->vl_clients);
+ vec_add1 (confused_indices, regpp - am->vl_clients);
+ }
+ }));
+ /* This should "never happen," but if it does, fix it... */
+ if (PREDICT_FALSE (vec_len(confused_indices) > 0)) {
+ int i;
+ for (i = 0; i < vec_len (confused_indices); i++) {
+ pool_put_index (am->vl_clients, confused_indices[i]);
+ }
+ }
+
+ if (PREDICT_FALSE (vec_len(dead_indices) > 0)) {
+ int i;
+ svm_region_t *svm;
+ void * oldheap;
+
+ /* Allow the application to clean up its registrations */
+ for (i = 0; i < vec_len(dead_indices); i++) {
+ regpp = pool_elt_at_index (am->vl_clients, dead_indices[i]);
+ if (regpp) {
+ u32 handle;
+
+ handle = vl_msg_api_handle_from_index_and_epoch
+ (dead_indices[i], shm->application_restarts);
+ (void) vl_api_memclnt_delete_callback (handle);
+ }
+ }
+
+ svm = am->vlib_rp;
+ pthread_mutex_lock (&svm->mutex);
+ oldheap = svm_push_data_heap(svm);
+
+ for (i = 0; i < vec_len(dead_indices); i++) {
+ regpp = pool_elt_at_index (am->vl_clients, dead_indices[i]);
+ if (regpp) {
+ /* Poison the old registration */
+ memset (*regpp, 0xF3, sizeof (**regpp));
+ clib_mem_free (*regpp);
+ /* no dangling references, please */
+ *regpp = 0;
+ } else {
+ svm_pop_heap (oldheap);
+ clib_warning ("Duplicate free, client index %d",
+ regpp - am->vl_clients);
+ oldheap = svm_push_data_heap(svm);
+ }
+ }
+
+ svm_client_scan_this_region_nolock (am->vlib_rp);
+
+ pthread_mutex_unlock(&svm->mutex);
+ svm_pop_heap (oldheap);
+ for (i = 0; i < vec_len (dead_indices); i++)
+ pool_put_index (am->vl_clients, dead_indices[i]);
+ }
+
+ dead_client_scan_time = vlib_time_now (vm) + 20.0;
+ }
+
+ if (TRACE_VLIB_MEMORY_QUEUE)
+ {
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "q-awake: len %d",
+ .format_args = "i4",
+ };
+ struct { u32 len; } * ed;
+ ed = ELOG_DATA (&vm->elog_main, e);
+ ed->len = q->cursize;
+ }
+ }
+
+ return 0;
+}
+
+static clib_error_t *
+vl_api_show_histogram_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ u64 total_counts = 0;
+ int i;
+
+ for (i = 0; i < SLEEP_N_BUCKETS; i++) {
+ total_counts += vector_rate_histogram [i];
+ }
+
+ if (total_counts == 0) {
+ vlib_cli_output (vm, "No control-plane activity.");
+ return 0;
+ }
+
+#define _(n) \
+ do { \
+ f64 percent; \
+ percent = ((f64) vector_rate_histogram[SLEEP_##n##_US]) \
+ / (f64) total_counts; \
+ percent *= 100.0; \
+ vlib_cli_output (vm, "Sleep %3d us: %llu, %.2f%%",n, \
+ vector_rate_histogram[SLEEP_##n##_US], \
+ percent); \
+ } while (0);
+ foreach_histogram_bucket;
+#undef _
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (cli_show_api_histogram_command, static) = {
+ .path = "show api histogram",
+ .short_help = "show api histogram",
+ .function = vl_api_show_histogram_command,
+};
+
+static clib_error_t *
+vl_api_clear_histogram_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ int i;
+
+ for (i = 0; i < SLEEP_N_BUCKETS; i++)
+ vector_rate_histogram[i] = 0;
+ return 0;
+}
+
+VLIB_CLI_COMMAND (cli_clear_api_histogram_command, static) = {
+ .path = "clear api histogram",
+ .short_help = "clear api histogram",
+ .function = vl_api_clear_histogram_command,
+};
+
+
+VLIB_REGISTER_NODE (memclnt_node,static) = {
+ .function = memclnt_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "api-rx-from-ring",
+ .state = VLIB_NODE_STATE_DISABLED,
+};
+
+static void
+memclnt_queue_signal (int signum)
+{
+ vlib_main_t * vm = vlib_get_main();
+
+ vm->queue_signal_pending = 1;
+}
+
+static void
+memclnt_queue_callback (vlib_main_t *vm)
+{
+#if 0
+ /* If we need to manually suspend / resume the memclnt process */
+ vlib_node_t * n = vlib_get_node (vm, memclnt_node.index);
+ vlib_process_t * p = vlib_get_process_from_node (vm, n);
+#endif
+
+ vm->queue_signal_pending = 0;
+ vlib_process_signal_event
+ (vm, memclnt_node.index, /* event_type */ 0, /* event_data */ 0);
+}
+
+void vl_enable_disable_memory_api (vlib_main_t *vm, int enable)
+{
+ vlib_node_set_state (vm, memclnt_node.index,
+ (enable
+ ? VLIB_NODE_STATE_POLLING
+ : VLIB_NODE_STATE_DISABLED));
+}
+
+static uword
+api_rx_from_node (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ uword n_packets = frame->n_vectors;
+ uword n_left_from;
+ u32 * from;
+ static u8 * long_msg;
+
+ vec_validate (long_msg, 4095);
+ n_left_from = frame->n_vectors;
+ from = vlib_frame_args (frame);
+
+ while (n_left_from > 0) {
+ u32 bi0;
+ vlib_buffer_t * b0;
+ void * msg;
+ uword msg_len;
+
+ bi0 = from[0];
+ b0 = vlib_get_buffer (vm, bi0);
+ from += 1;
+ n_left_from -= 1;
+
+ msg = b0->data + b0->current_data;
+ msg_len = b0->current_length;
+ if (b0->flags & VLIB_BUFFER_NEXT_PRESENT) {
+ ASSERT (long_msg != 0);
+ _vec_len (long_msg) = 0;
+ vec_add (long_msg, msg, msg_len);
+ while (b0->flags & VLIB_BUFFER_NEXT_PRESENT) {
+ b0 = vlib_get_buffer (vm, b0->next_buffer);
+ msg = b0->data + b0->current_data;
+ msg_len = b0->current_length;
+ vec_add (long_msg, msg, msg_len);
+ }
+ msg = long_msg;
+ }
+ vl_msg_api_handler_no_trace_no_free (msg);
+ }
+
+ /* Free what we've been given. */
+ vlib_buffer_free (vm, vlib_frame_args (frame), n_packets);
+
+ return n_packets;
+}
+
+VLIB_REGISTER_NODE (api_rx_from_node_node,static) = {
+ .function = api_rx_from_node,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .vector_size = 4,
+ .name = "api-rx-from-node",
+};
+
+static clib_error_t *
+setup_memclnt_exit (vlib_main_t * vm)
+{
+ atexit (vl_unmap_shmem);
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (setup_memclnt_exit);
+
+
+static clib_error_t *
+vl_api_ring_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ int i;
+ ring_alloc_t *ap;
+ vl_shmem_hdr_t *shmem_hdr;
+ api_main_t *am = &api_main;
+
+ shmem_hdr = am->shmem_hdr;
+
+ if (shmem_hdr == 0) {
+ vlib_cli_output (vm, "Shared memory segment not initialized...\n");
+ return 0;
+ }
+
+ vlib_cli_output (vm, "%8s %8s %8s %8s %8s\n",
+ "Owner", "Size", "Nitems", "Hits", "Misses");
+
+ ap = shmem_hdr->vl_rings;
+
+ for (i = 0; i < vec_len(shmem_hdr->vl_rings); i++) {
+ vlib_cli_output(vm, "%8s %8d %8d %8d %8d\n",
+ "vlib", ap->size, ap->nitems, ap->hits, ap->misses);
+ ap++;
+ }
+
+ ap = shmem_hdr->client_rings;
+
+ for (i = 0; i < vec_len(shmem_hdr->client_rings); i++) {
+ vlib_cli_output(vm, "%8s %8d %8d %8d %8d\n",
+ "clnt", ap->size, ap->nitems, ap->hits, ap->misses);
+ ap++;
+ }
+
+ vlib_cli_output (vm, "%d ring miss fallback allocations\n",
+ am->ring_misses);
+
+ vlib_cli_output (vm, "%d application restarts, %d reclaimed msgs\n",
+ shmem_hdr->application_restarts,
+ shmem_hdr->restart_reclaims);
+ return 0;
+}
+
+void dump_socket_clients (vlib_main_t *vm, api_main_t *am)
+ __attribute__((weak));
+
+void dump_socket_clients (vlib_main_t *vm, api_main_t *am)
+{
+}
+
+static clib_error_t *
+vl_api_client_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ vl_api_registration_t **regpp, *regp;
+ unix_shared_memory_queue_t *q;
+ char *health;
+ api_main_t *am = &api_main;
+ u32 * confused_indices = 0;
+
+ if (!pool_elts (am->vl_clients))
+ goto socket_clients;
+ vlib_cli_output (vm, "Shared memory clients");
+ vlib_cli_output (vm, "%16s %8s %14s %18s %s",
+ "Name", "PID", "Queue Length", "Queue VA", "Health");
+
+ pool_foreach (regpp, am->vl_clients,
+ ({
+ regp = *regpp;
+
+ if (regp) {
+ q = regp->vl_input_queue;
+ if (kill (q->consumer_pid, 0) < 0) {
+ health = "DEAD";
+ } else {
+ health = "alive";
+ }
+ vlib_cli_output (vm, "%16s %8d %14d 0x%016llx %s\n",
+ regp->name, q->consumer_pid, q->cursize,
+ q, health);
+ } else {
+ clib_warning ("NULL client registration index %d",
+ regpp - am->vl_clients);
+ vec_add1 (confused_indices, regpp - am->vl_clients);
+ }
+ }));
+
+ /* This should "never happen," but if it does, fix it... */
+ if (PREDICT_FALSE (vec_len(confused_indices) > 0)) {
+ int i;
+ for (i = 0; i < vec_len (confused_indices); i++) {
+ pool_put_index (am->vl_clients, confused_indices[i]);
+ }
+ }
+ vec_free (confused_indices);
+
+ if (am->missing_clients)
+ vlib_cli_output (vm, "%u messages with missing clients",
+ am->missing_clients);
+socket_clients:
+ dump_socket_clients (vm, am);
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (cli_show_api_command, static) = {
+ .path = "show api",
+ .short_help = "Show API information",
+};
+
+VLIB_CLI_COMMAND (cli_show_api_ring_command, static) = {
+ .path = "show api ring-stats",
+ .short_help = "Message ring statistics",
+ .function = vl_api_ring_command,
+};
+
+VLIB_CLI_COMMAND (cli_show_api_clients_command, static) = {
+ .path = "show api clients",
+ .short_help = "Client information",
+ .function = vl_api_client_command,
+};
+
+static clib_error_t *
+vl_api_message_table_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ api_main_t *am = &api_main;
+ int i;
+ int verbose = 0;
+
+ if (unformat (input, "verbose"))
+ verbose = 1;
+
+
+ if (verbose == 0)
+ vlib_cli_output (vm, "%-4s %s", "ID", "Name");
+ else
+ vlib_cli_output (vm, "%-4s %-40s %6s %7s", "ID", "Name", "Bounce",
+ "MP-safe");
+
+ for (i = 1; i < vec_len (am->msg_names); i++) {
+ if (verbose == 0) {
+ vlib_cli_output (vm, "%-4d %s", i,
+ am->msg_names[i] ? am->msg_names[i] :
+ " [no handler]");
+ } else {
+ vlib_cli_output (vm, "%-4d %-40s %6d %7d", i,
+ am->msg_names[i] ? am->msg_names[i] :
+ " [no handler]", am->message_bounce[i],
+ am->is_mp_safe[i]);
+ }
+ }
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (cli_show_api_message_table_command, static) = {
+ .path = "show api message-table",
+ .short_help = "Message Table",
+ .function = vl_api_message_table_command,
+};
+
+void vl_api_trace_print_file_cmd(vlib_main_t *vm, u32 first, u32 last,
+ u8 *filename)
+{
+ FILE *fp;
+ static vl_api_trace_t *tp = 0;
+ int endian_swap = 0;
+ u32 i;
+ u16 msg_id;
+ static u8 *msg_buf=0;
+ void (*endian_fp)(void *);
+ u8 *(*print_fp)(void *, void *);
+ int size;
+ api_main_t *am = &api_main;
+
+ /*
+ * On-demand: allocate enough space for the largest message
+ */
+ if (msg_buf == 0) {
+ vec_validate(tp, 0);
+ int max_size = 0;
+ for (i = 0; i < vec_len(am->api_trace_cfg); i++) {
+ if (am->api_trace_cfg[i].size > max_size)
+ max_size = am->api_trace_cfg[i].size;
+ }
+ /* round size to a multiple of the cache-line size */
+ max_size = (max_size + (CLIB_CACHE_LINE_BYTES-1)) &
+ (~(CLIB_CACHE_LINE_BYTES-1));
+ vec_validate (msg_buf, max_size-1);
+ }
+
+ fp = fopen ((char *)filename, "r");
+
+ if (fp == NULL) {
+ vlib_cli_output (vm, "Couldn't open %s\n", filename);
+ return;
+ }
+
+ /* first, fish the header record from the file */
+
+ if (fread(tp, sizeof(*tp), 1, fp) != 1) {
+ fclose(fp);
+ vlib_cli_output (vm, "Header read error\n");
+ return;
+ }
+
+ /* Endian swap required? */
+ if (clib_arch_is_big_endian != tp->endian) {
+ endian_swap = 1;
+ }
+
+ for (i = 0; i <= last; i++) {
+ /* First 2 bytes are the message type */
+ if (fread(&msg_id, sizeof(u16), 1, fp) != 1) {
+ break;
+ }
+ msg_id = ntohs(msg_id);
+
+ fseek(fp, -2, SEEK_CUR);
+
+ /* Mild sanity check */
+ if (msg_id >= vec_len(am->msg_handlers)) {
+ fclose(fp);
+ vlib_cli_output (vm, "msg_id %d out of bounds\n",
+ msg_id);
+ return;
+ }
+
+ size = am->api_trace_cfg[msg_id].size;
+
+ if (fread(msg_buf, size, 1, fp) != 1) {
+ fclose(fp);
+ vlib_cli_output (vm, "read error on %s\n", filename);
+ return;
+ }
+
+ if (i < first)
+ continue;
+
+ if (endian_swap) {
+ endian_fp = am->msg_endian_handlers[msg_id];
+ (*endian_fp)(msg_buf);
+ }
+
+ vlib_cli_output (vm, "[%d]: %s\n", i,
+ am->msg_names[msg_id]);
+
+ print_fp = (void *)am->msg_print_handlers[msg_id];
+ (*print_fp)(msg_buf, vm);
+ vlib_cli_output (vm, "-------------\n");
+ }
+ fclose(fp);
+}
+
+static clib_error_t *
+vl_api_trace_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ u32 nitems=1024;
+ vl_api_trace_which_t which=VL_API_TRACE_RX;
+ u8 *filename;
+ u32 first = 0;
+ u32 last = ~0;
+ api_main_t *am = &api_main;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
+ if (unformat (input, "rx nitems %u", &nitems)
+ || unformat (input, "rx"))
+ goto configure;
+ else if (unformat (input, "tx nitems %u", &nitems)
+ || unformat (input, "tx")) {
+ which = VL_API_TRACE_RX;
+ goto configure;
+ } else if (unformat (input, "on rx")) {
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_RX, 1);
+ } else if (unformat (input, "on tx")) {
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_TX, 1);
+ } else if (unformat (input, "on")) {
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_RX, 1);
+ } else if (unformat (input, "off")) {
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_RX, 0);
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_TX, 0);
+ } else if (unformat (input, "free")) {
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_RX, 0);
+ vl_msg_api_trace_onoff (am, VL_API_TRACE_TX, 0);
+ vl_msg_api_trace_free (am, VL_API_TRACE_RX);
+ vl_msg_api_trace_free (am, VL_API_TRACE_TX);
+ } else if (unformat (input, "print %s from %d to %d", &filename,
+ &first, &last)
+ || unformat (input, "print %s", &filename)) {
+ goto print;
+ } else if (unformat (input, "debug on")) {
+ am->msg_print_flag = 1;
+ } else if (unformat (input, "debug off")) {
+ am->msg_print_flag = 0;
+ }
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+ return 0;
+
+ print:
+ vl_api_trace_print_file_cmd (vm, first, last, filename);
+ goto out;
+
+ configure:
+ if (vl_msg_api_trace_configure (am, which, nitems)) {
+ vlib_cli_output (vm, "warning: trace configure error (%d, %d)",
+ which, nitems);
+ }
+
+ out:
+ return 0;
+}
+
+VLIB_CLI_COMMAND (trace, static) = {
+ .path = "set api-trace",
+ .short_help = "API trace",
+ .function = vl_api_trace_command,
+};
+
+clib_error_t *
+vlibmemory_init (vlib_main_t * vm)
+{
+ /* Do this early, to avoid glibc malloc fubar */
+ svm_region_init();
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (vlibmemory_init);
+
+void vl_set_memory_region_name (char *name)
+{
+ api_main_t *am = &api_main;
+
+ am->region_name = name;
+}
+
+void vl_set_memory_root_path (char *name)
+{
+ api_main_t *am = &api_main;
+
+ am->root_path = name;
+}
+
+static int range_compare (vl_api_msg_range_t * a0, vl_api_msg_range_t * a1)
+{
+ int len0, len1, clen;
+
+ len0 = vec_len (a0->name);
+ len1 = vec_len (a1->name);
+ clen = len0 < len1 ? len0 : len1;
+ return (strncmp ((char *) a0->name, (char *)a1->name, clen));
+}
+
+static u8 * format_api_msg_range (u8 * s, va_list * args)
+{
+ vl_api_msg_range_t * rp = va_arg (*args, vl_api_msg_range_t *);
+
+ if (rp == 0)
+ s = format (s, "%-20s%9s%9s", "Name", "First-ID", "Last-ID");
+ else
+ s = format (s, "%-20s%9d%9d", rp->name, rp->first_msg_id,
+ rp->last_msg_id);
+
+ return s;
+}
+
+static clib_error_t *
+vl_api_show_plugin_command(vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cli_cmd)
+{
+ api_main_t *am = &api_main;
+ vl_api_msg_range_t * rp = 0;
+ int i;
+
+ if (vec_len (am->msg_ranges) == 0) {
+ vlib_cli_output (vm, "No plugin API message ranges configured...");
+ return 0;
+ }
+
+ rp = vec_dup (am->msg_ranges);
+
+ vec_sort_with_function (rp, range_compare);
+
+ vlib_cli_output (vm, "Plugin API message ID ranges...\n");
+ vlib_cli_output (vm, "%U", format_api_msg_range, 0 /* header */);
+
+ for (i = 0; i < vec_len (rp); i++)
+ vlib_cli_output (vm, "%U", format_api_msg_range, rp+i);
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (cli_show_api_plugin_command, static) = {
+ .path = "show api plugin",
+ .short_help = "show api plugin",
+ .function = vl_api_show_plugin_command,
+};