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4b1b13315a3c532d45fb41cc3ce34a48ad72a757
vpp/src/vlibmemory/memory_api.c
Dave Barach 38ca6e62d7 api: call api reaper callbacks for socket clients 
Add a callback to clear the per-client packet trace buffer cache.

Save the packet trace dump pg setup script.

Type: improvement
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I252be911b5f937ece0da5dca152263ece3d52963
2020-07-19 13:06:06 +00:00

993 lines
27 KiB
C
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/*
*------------------------------------------------------------------
* Copyright (c) 2018 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 <signal.h>
#include <vlib/vlib.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vlibmemory/memory_api.h>
#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
/* instantiate all the endian swap functions we know about */
#define vl_endianfun
#include <vlibmemory/vl_memory_api_h.h>
#undef vl_endianfun
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;
}
volatile int **vl_api_queue_cursizes;
static void
memclnt_queue_callback (vlib_main_t * vm)
{
int i;
api_main_t *am = vlibapi_get_main ();
if (PREDICT_FALSE (vec_len (vl_api_queue_cursizes) !=
1 + vec_len (am->vlib_private_rps)))
{
vl_shmem_hdr_t *shmem_hdr = am->shmem_hdr;
svm_queue_t *q;
if (shmem_hdr == 0)
return;
q = shmem_hdr->vl_input_queue;
if (q == 0)
return;
vec_add1 (vl_api_queue_cursizes, &q->cursize);
for (i = 0; i < vec_len (am->vlib_private_rps); i++)
{
svm_region_t *vlib_rp = am->vlib_private_rps[i];
shmem_hdr = (void *) vlib_rp->user_ctx;
q = shmem_hdr->vl_input_queue;
vec_add1 (vl_api_queue_cursizes, &q->cursize);
}
}
for (i = 0; i < vec_len (vl_api_queue_cursizes); i++)
{
if (*vl_api_queue_cursizes[i])
{
vm->queue_signal_pending = 1;
vm->api_queue_nonempty = 1;
vlib_process_signal_event (vm, vl_api_clnt_node.index,
/* event_type */ QUEUE_SIGNAL_EVENT,
/* event_data */ 0);
break;
}
}
if (vec_len (vm->pending_rpc_requests))
{
vm->queue_signal_pending = 1;
vm->api_queue_nonempty = 1;
vlib_process_signal_event (vm, vl_api_clnt_node.index,
/* event_type */ QUEUE_SIGNAL_EVENT,
/* event_data */ 0);
}
}
/*
* vl_api_memclnt_create_internal
*/
u32
vl_api_memclnt_create_internal (char *name, svm_queue_t * q)
{
vl_api_registration_t **regpp;
vl_api_registration_t *regp;
void *oldheap;
api_main_t *am = vlibapi_get_main ();
ASSERT (vlib_get_thread_index () == 0);
pool_get (am->vl_clients, regpp);
oldheap = vl_msg_push_heap ();
*regpp = clib_mem_alloc (sizeof (vl_api_registration_t));
regp = *regpp;
clib_memset (regp, 0, sizeof (*regp));
regp->registration_type = REGISTRATION_TYPE_SHMEM;
regp->vl_api_registration_pool_index = regpp - am->vl_clients;
regp->vlib_rp = am->vlib_rp;
regp->shmem_hdr = am->shmem_hdr;
regp->vl_input_queue = q;
regp->name = format (0, "%s%c", name, 0);
vl_msg_pop_heap (oldheap);
return vl_msg_api_handle_from_index_and_epoch
(regp->vl_api_registration_pool_index,
am->shmem_hdr->application_restarts);
}
/*
* 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_queue_t *q;
int rv = 0;
void *oldheap;
api_main_t *am = vlibapi_get_main ();
u8 *msg_table;
/*
* 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);
oldheap = vl_msg_push_heap ();
*regpp = clib_mem_alloc (sizeof (vl_api_registration_t));
regp = *regpp;
clib_memset (regp, 0, sizeof (*regp));
regp->registration_type = REGISTRATION_TYPE_SHMEM;
regp->vl_api_registration_pool_index = regpp - am->vl_clients;
regp->vlib_rp = am->vlib_rp;
regp->shmem_hdr = am->shmem_hdr;
regp->clib_file_index = am->shmem_hdr->clib_file_index;
q = regp->vl_input_queue = (svm_queue_t *) (uword) mp->input_queue;
VL_MSG_API_SVM_QUEUE_UNPOISON (q);
regp->name = format (0, "%s", mp->name);
vec_add1 (regp->name, 0);
if (am->serialized_message_table_in_shmem == 0)
am->serialized_message_table_in_shmem =
vl_api_serialize_message_table (am, 0);
if (am->vlib_rp != am->vlib_primary_rp)
msg_table = vl_api_serialize_message_table (am, 0);
else
msg_table = am->serialized_message_table_in_shmem;
vl_msg_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);
rp->message_table = pointer_to_uword (msg_table);
vl_msg_api_send_shmem (q, (u8 *) & rp);
}
void
vl_api_call_reaper_functions (u32 client_index)
{
clib_error_t *error = 0;
_vl_msg_api_function_list_elt_t *i;
i = vlibapi_get_main ()->reaper_function_registrations;
while (i)
{
error = i->f (client_index);
if (error)
clib_error_report (error);
i = i->next_init_function;
}
}
/*
* 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;
void *oldheap;
api_main_t *am = vlibapi_get_main ();
u32 handle, client_index, epoch;
handle = mp->index;
vl_api_call_reaper_functions (handle);
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 = pool_elt_at_index (am->vl_clients, client_index);
if (!pool_is_free (am->vl_clients, regpp))
{
int i;
regp = *regpp;
int private_registration = 0;
/* Send reply unless client asked us to do the cleanup */
if (!mp->do_cleanup)
{
/*
* Note: the API message handling path will set am->vlib_rp
* as appropriate for pairwise / private memory segments
*/
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;
/* For horizontal scaling, add a hash table... */
for (i = 0; i < vec_len (am->vlib_private_rps); i++)
{
/* Is this a pairwise / private API segment? */
if (am->vlib_private_rps[i] == am->vlib_rp)
{
/* Note: account for the memfd header page */
uword virtual_base = am->vlib_rp->virtual_base - MMAP_PAGESIZE;
uword virtual_size = am->vlib_rp->virtual_size + MMAP_PAGESIZE;
/*
* Kill the registration pool element before we make
* the index vanish forever
*/
pool_put_index (am->vl_clients,
regp->vl_api_registration_pool_index);
vec_delete (am->vlib_private_rps, 1, i);
/* Kill it, accounting for the memfd header page */
if (munmap ((void *) virtual_base, virtual_size) < 0)
clib_unix_warning ("munmap");
/* Reset the queue-length-address cache */
vec_reset_length (vl_api_queue_cursizes);
private_registration = 1;
break;
}
}
if (private_registration == 0)
{
pool_put_index (am->vl_clients,
regp->vl_api_registration_pool_index);
oldheap = vl_msg_push_heap ();
if (mp->do_cleanup)
svm_queue_free (regp->vl_input_queue);
vec_free (regp->name);
/* Poison the old registration */
clib_memset (regp, 0xF1, sizeof (*regp));
clib_mem_free (regp);
vl_msg_pop_heap (oldheap);
/*
* These messages must be freed manually, since they're set up
* as "bounce" messages. In the private_registration == 1 case,
* we kill the shared-memory segment which contains the message
* with munmap.
*/
vl_msg_api_free (mp);
}
}
else
{
clib_warning ("unknown client ID %d", mp->index);
}
}
/**
* client answered a ping, stave off the grim reaper...
*/
void
vl_api_memclnt_keepalive_reply_t_handler
(vl_api_memclnt_keepalive_reply_t * mp)
{
vl_api_registration_t *regp;
vlib_main_t *vm = vlib_get_main ();
regp = vl_api_client_index_to_registration (mp->context);
if (regp)
{
regp->last_heard = vlib_time_now (vm);
regp->unanswered_pings = 0;
}
else
clib_warning ("BUG: anonymous memclnt_keepalive_reply");
}
/**
* We can send ourselves these messages if someone uses the
* builtin binary api test tool...
*/
static void
vl_api_memclnt_keepalive_t_handler (vl_api_memclnt_keepalive_t * mp)
{
vl_api_memclnt_keepalive_reply_t *rmp;
api_main_t *am;
vl_shmem_hdr_t *shmem_hdr;
am = vlibapi_get_main ();
shmem_hdr = am->shmem_hdr;
rmp = vl_msg_api_alloc_as_if_client (sizeof (*rmp));
clib_memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_MEMCLNT_KEEPALIVE_REPLY);
rmp->context = mp->context;
vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & rmp);
}
/*
* To avoid filling the API trace buffer with boring messages,
* don't trace memclnt_keepalive[_reply] msgs
*/
#define foreach_vlib_api_msg \
_(MEMCLNT_CREATE, memclnt_create, 1) \
_(MEMCLNT_DELETE, memclnt_delete, 1) \
_(MEMCLNT_KEEPALIVE, memclnt_keepalive, 0) \
_(MEMCLNT_KEEPALIVE_REPLY, memclnt_keepalive_reply, 0)
/*
* memory_api_init
*/
int
vl_mem_api_init (const char *region_name)
{
int rv;
api_main_t *am = vlibapi_get_main ();
vl_msg_api_msg_config_t cfg;
vl_msg_api_msg_config_t *c = &cfg;
vl_shmem_hdr_t *shm;
vlib_main_t *vm = vlib_get_main ();
clib_memset (c, 0, sizeof (*c));
if ((rv = vl_map_shmem (region_name, 1 /* is_vlib */ )) < 0)
return rv;
#define _(N,n,t) 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 = t; /* trace, so these msgs print */ \
c->replay = 0; /* don't replay client create/delete msgs */ \
c->message_bounce = 0; /* don't bounce this message */ \
vl_msg_api_config(c);} while (0);
foreach_vlib_api_msg;
#undef _
/*
* special-case freeing of memclnt_delete messages, so we can
* simply munmap pairwise / private API segments...
*/
am->message_bounce[VL_API_MEMCLNT_DELETE] = 1;
am->is_mp_safe[VL_API_MEMCLNT_KEEPALIVE_REPLY] = 1;
am->is_mp_safe[VL_API_MEMCLNT_KEEPALIVE] = 1;
vlib_set_queue_signal_callback (vm, memclnt_queue_callback);
shm = am->shmem_hdr;
ASSERT (shm && shm->vl_input_queue);
/* Make a note so we can always find the primary region easily */
am->vlib_primary_rp = am->vlib_rp;
return 0;
}
clib_error_t *
map_api_segment_init (vlib_main_t * vm)
{
api_main_t *am = vlibapi_get_main ();
int rv;
if ((rv = vl_mem_api_init (am->region_name)) < 0)
{
return clib_error_return (0, "vl_mem_api_init (%s) failed",
am->region_name);
}
return 0;
}
static void
send_memclnt_keepalive (vl_api_registration_t * regp, f64 now)
{
vl_api_memclnt_keepalive_t *mp;
svm_queue_t *q;
api_main_t *am = vlibapi_get_main ();
q = regp->vl_input_queue;
/*
* If the queue head is moving, assume that the client is processing
* messages and skip the ping. This heuristic may fail if the queue
* is in the same position as last time, net of wrapping; in which
* case, the client will receive a keepalive.
*/
if (regp->last_queue_head != q->head)
{
regp->last_heard = now;
regp->unanswered_pings = 0;
regp->last_queue_head = q->head;
return;
}
/*
* push/pop shared memory segment, so this routine
* will work with "normal" as well as "private segment"
* memory clients..
*/
mp = vl_mem_api_alloc_as_if_client_w_reg (regp, sizeof (*mp));
clib_memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = clib_host_to_net_u16 (VL_API_MEMCLNT_KEEPALIVE);
mp->context = mp->client_index =
vl_msg_api_handle_from_index_and_epoch
(regp->vl_api_registration_pool_index,
am->shmem_hdr->application_restarts);
regp->unanswered_pings++;
/* Failure-to-send due to a stuffed queue is absolutely expected */
if (svm_queue_add (q, (u8 *) & mp, 1 /* nowait */ ))
vl_msg_api_free_w_region (regp->vlib_rp, mp);
}
static void
vl_mem_send_client_keepalive_w_reg (api_main_t * am, f64 now,
vl_api_registration_t ** regpp,
u32 ** dead_indices,
u32 ** confused_indices)
{
vl_api_registration_t *regp = *regpp;
if (regp)
{
/* If we haven't heard from this client recently... */
if (regp->last_heard < (now - 10.0))
{
if (regp->unanswered_pings == 2)
{
svm_queue_t *q;
q = regp->vl_input_queue;
if (kill (q->consumer_pid, 0) >= 0)
{
clib_warning ("REAPER: lazy binary API client '%s'",
regp->name);
regp->unanswered_pings = 0;
regp->last_heard = now;
}
else
{
clib_warning ("REAPER: binary API client '%s' died",
regp->name);
vec_add1 (*dead_indices, regpp - am->vl_clients);
}
}
else
send_memclnt_keepalive (regp, now);
}
else
regp->unanswered_pings = 0;
}
else
{
clib_warning ("NULL client registration index %d",
regpp - am->vl_clients);
vec_add1 (*confused_indices, regpp - am->vl_clients);
}
}
void
vl_mem_api_dead_client_scan (api_main_t * am, vl_shmem_hdr_t * shm, f64 now)
{
vl_api_registration_t **regpp;
static u32 *dead_indices;
static u32 *confused_indices;
vec_reset_length (dead_indices);
vec_reset_length (confused_indices);
/* *INDENT-OFF* */
pool_foreach (regpp, am->vl_clients, ({
vl_mem_send_client_keepalive_w_reg (am, now, regpp, &dead_indices,
&confused_indices);
}));
/* *INDENT-ON* */
/* 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;
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);
vl_api_call_reaper_functions (handle);
}
}
oldheap = vl_msg_push_heap ();
for (i = 0; i < vec_len (dead_indices); i++)
{
regpp = pool_elt_at_index (am->vl_clients, dead_indices[i]);
if (regpp)
{
/* Is this a pairwise SVM segment? */
if ((*regpp)->vlib_rp != am->vlib_rp)
{
int i;
svm_region_t *dead_rp = (*regpp)->vlib_rp;
/* Note: account for the memfd header page */
uword virtual_base = dead_rp->virtual_base - MMAP_PAGESIZE;
uword virtual_size = dead_rp->virtual_size + MMAP_PAGESIZE;
/* For horizontal scaling, add a hash table... */
for (i = 0; i < vec_len (am->vlib_private_rps); i++)
if (am->vlib_private_rps[i] == dead_rp)
{
vec_delete (am->vlib_private_rps, 1, i);
goto found;
}
svm_pop_heap (oldheap);
clib_warning ("private rp %llx AWOL", dead_rp);
oldheap = svm_push_data_heap (am->vlib_rp);
found:
/* Kill it, accounting for the memfd header page */
svm_pop_heap (oldheap);
if (munmap ((void *) virtual_base, virtual_size) < 0)
clib_unix_warning ("munmap");
/* Reset the queue-length-address cache */
vec_reset_length (vl_api_queue_cursizes);
oldheap = svm_push_data_heap (am->vlib_rp);
}
else
{
/* Poison the old registration */
clib_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 (am->vlib_rp);
}
}
svm_client_scan_this_region_nolock (am->vlib_rp);
vl_msg_pop_heap (oldheap);
for (i = 0; i < vec_len (dead_indices); i++)
pool_put_index (am->vl_clients, dead_indices[i]);
}
}
static inline int
void_mem_api_handle_msg_i (api_main_t * am, svm_region_t * vlib_rp,
vlib_main_t * vm, vlib_node_runtime_t * node,
u8 is_private)
{
svm_queue_t *q;
uword mp;
q = ((vl_shmem_hdr_t *) (void *) vlib_rp->user_ctx)->vl_input_queue;
if (!svm_queue_sub2 (q, (u8 *) & mp))
{
VL_MSG_API_UNPOISON ((void *) mp);
vl_msg_api_handler_with_vm_node (am, vlib_rp, (void *) mp, vm, node,
is_private);
return 0;
}
return -1;
}
int
vl_mem_api_handle_msg_main (vlib_main_t * vm, vlib_node_runtime_t * node)
{
api_main_t *am = vlibapi_get_main ();
return void_mem_api_handle_msg_i (am, am->vlib_rp, vm, node,
0 /* is_private */ );
}
int
vl_mem_api_handle_rpc (vlib_main_t * vm, vlib_node_runtime_t * node)
{
api_main_t *am = vlibapi_get_main ();
int i;
uword *tmp, mp;
/*
* Swap pending and processing vectors, then process the RPCs
* Avoid deadlock conditions by construction.
*/
clib_spinlock_lock_if_init (&vm->pending_rpc_lock);
tmp = vm->processing_rpc_requests;
vec_reset_length (tmp);
vm->processing_rpc_requests = vm->pending_rpc_requests;
vm->pending_rpc_requests = tmp;
clib_spinlock_unlock_if_init (&vm->pending_rpc_lock);
/*
* RPCs are used to reflect function calls to thread 0
* when the underlying code is not thread-safe.
*
* Grabbing the thread barrier across a set of RPCs
* greatly increases efficiency, and avoids
* running afoul of the barrier sync holddown timer.
* The barrier sync code supports recursive locking.
*
* We really need to rewrite RPC-based code...
*/
if (PREDICT_TRUE (vec_len (vm->processing_rpc_requests)))
{
vl_msg_api_barrier_sync ();
for (i = 0; i < vec_len (vm->processing_rpc_requests); i++)
{
mp = vm->processing_rpc_requests[i];
vl_msg_api_handler_with_vm_node (am, am->vlib_rp, (void *) mp, vm,
node, 0 /* is_private */ );
}
vl_msg_api_barrier_release ();
}
return 0;
}
int
vl_mem_api_handle_msg_private (vlib_main_t * vm, vlib_node_runtime_t * node,
u32 reg_index)
{
api_main_t *am = vlibapi_get_main ();
return void_mem_api_handle_msg_i (am, am->vlib_private_rps[reg_index], vm,
node, 1 /* is_private */ );
}
vl_api_registration_t *
vl_mem_api_client_index_to_registration (u32 handle)
{
vl_api_registration_t **regpp;
vl_api_registration_t *regp;
api_main_t *am = vlibapi_get_main ();
vl_shmem_hdr_t *shmem_hdr;
u32 index;
index = vl_msg_api_handle_get_index (handle);
regpp = am->vl_clients + index;
if (pool_is_free (am->vl_clients, regpp))
{
vl_msg_api_increment_missing_client_counter ();
return 0;
}
regp = *regpp;
shmem_hdr = (vl_shmem_hdr_t *) regp->shmem_hdr;
if (!vl_msg_api_handle_is_valid (handle, shmem_hdr->application_restarts))
{
vl_msg_api_increment_missing_client_counter ();
return 0;
}
return (regp);
}
svm_queue_t *
vl_api_client_index_to_input_queue (u32 index)
{
vl_api_registration_t *regp;
api_main_t *am = vlibapi_get_main ();
/* Special case: vlib trying to send itself a message */
if (index == (u32) ~ 0)
return (am->shmem_hdr->vl_input_queue);
regp = vl_mem_api_client_index_to_registration (index);
if (!regp)
return 0;
return (regp->vl_input_queue);
}
static clib_error_t *
setup_memclnt_exit (vlib_main_t * vm)
{
atexit (vl_unmap_shmem);
return 0;
}
VLIB_INIT_FUNCTION (setup_memclnt_exit);
u8 *
format_api_message_rings (u8 * s, va_list * args)
{
api_main_t *am = va_arg (*args, api_main_t *);
vl_shmem_hdr_t *shmem_hdr = va_arg (*args, vl_shmem_hdr_t *);
int main_segment = va_arg (*args, int);
ring_alloc_t *ap;
int i;
if (shmem_hdr == 0)
return format (s, "%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++)
{
s = format (s, "%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++)
{
s = format (s, "%8s %8d %8d %8d %8d\n",
"clnt", ap->size, ap->nitems, ap->hits, ap->misses);
ap++;
}
if (main_segment)
{
s = format (s, "%d ring miss fallback allocations\n", am->ring_misses);
s = format
(s,
"%d application restarts, %d reclaimed msgs, %d garbage collects\n",
shmem_hdr->application_restarts, shmem_hdr->restart_reclaims,
shmem_hdr->garbage_collects);
}
return s;
}
static clib_error_t *
vl_api_ring_command (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cli_cmd)
{
int i;
vl_shmem_hdr_t *shmem_hdr;
api_main_t *am = vlibapi_get_main ();
/* First, dump the primary region rings.. */
if (am->vlib_primary_rp == 0 || am->vlib_primary_rp->user_ctx == 0)
{
vlib_cli_output (vm, "Shared memory segment not initialized...\n");
return 0;
}
shmem_hdr = (void *) am->vlib_primary_rp->user_ctx;
vlib_cli_output (vm, "Main API segment rings:");
vlib_cli_output (vm, "%U", format_api_message_rings, am,
0 /* print header */ , 0 /* notused */ );
vlib_cli_output (vm, "%U", format_api_message_rings, am,
shmem_hdr, 1 /* main segment */ );
for (i = 0; i < vec_len (am->vlib_private_rps); i++)
{
svm_region_t *vlib_rp = am->vlib_private_rps[i];
shmem_hdr = (void *) vlib_rp->user_ctx;
vl_api_registration_t **regpp;
vl_api_registration_t *regp = 0;
/* For horizontal scaling, add a hash table... */
/* *INDENT-OFF* */
pool_foreach (regpp, am->vl_clients,
({
regp = *regpp;
if (regp && regp->vlib_rp == vlib_rp)
{
vlib_cli_output (vm, "%s segment rings:", regp->name);
goto found;
}
}));
vlib_cli_output (vm, "regp %llx not found?", regp);
continue;
/* *INDENT-ON* */
found:
vlib_cli_output (vm, "%U", format_api_message_rings, am,
0 /* print header */ , 0 /* notused */ );
vlib_cli_output (vm, "%U", format_api_message_rings, am,
shmem_hdr, 0 /* main segment */ );
}
return 0;
}
/*?
* Display binary api message allocation ring statistics
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (cli_show_api_ring_command, static) =
{
.path = "show api ring-stats",
.short_help = "Message ring statistics",
.function = vl_api_ring_command,
};
/* *INDENT-ON* */
clib_error_t *
vlibmemory_init (vlib_main_t * vm)
{
api_main_t *am = vlibapi_get_main ();
svm_map_region_args_t _a, *a = &_a;
u8 *remove_path1, *remove_path2;
void vlibsocket_reference (void);
vlibsocket_reference ();
/*
* By popular request / to avoid support fires, remove any old api segment
* files Right Here.
*/
if (am->root_path == 0)
{
remove_path1 = format (0, "/dev/shm/global_vm%c", 0);
remove_path2 = format (0, "/dev/shm/vpe-api%c", 0);
}
else
{
remove_path1 = format (0, "/dev/shm/%s-global_vm%c", am->root_path, 0);
remove_path2 = format (0, "/dev/shm/%s-vpe-api%c", am->root_path, 0);
}
(void) unlink ((char *) remove_path1);
(void) unlink ((char *) remove_path2);
vec_free (remove_path1);
vec_free (remove_path2);
clib_memset (a, 0, sizeof (*a));
a->root_path = am->root_path;
a->name = SVM_GLOBAL_REGION_NAME;
a->baseva = (am->global_baseva != 0) ?
am->global_baseva : +svm_get_global_region_base_va ();
a->size = (am->global_size != 0) ? am->global_size : SVM_GLOBAL_REGION_SIZE;
a->flags = SVM_FLAGS_NODATA;
a->uid = am->api_uid;
a->gid = am->api_gid;
a->pvt_heap_size =
(am->global_pvt_heap_size !=
0) ? am->global_pvt_heap_size : SVM_PVT_MHEAP_SIZE;
svm_region_init_args (a);
return 0;
}
void
vl_set_memory_region_name (const char *name)
{
api_main_t *am = vlibapi_get_main ();
am->region_name = name;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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