/* *------------------------------------------------------------------ * memory_client.c - API message handling, client code. * * Copyright (c) 2010 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 #include #include #include #include #include /* A hack. vl_client_get_first_plugin_msg_id depends on it */ #include #include #define vl_typedefs /* define message structures */ #include #undef vl_typedefs #define vl_endianfun /* define message structures */ #include #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) clib_warning (__VA_ARGS__) #define vl_printfun #include #undef vl_printfun typedef struct { u8 rx_thread_jmpbuf_valid; u8 connected_to_vlib; jmp_buf rx_thread_jmpbuf; pthread_t rx_thread_handle; /* Plugin message base lookup scheme */ volatile u8 first_msg_id_reply_ready; u16 first_msg_id_reply; } memory_client_main_t; memory_client_main_t memory_client_main; static void * rx_thread_fn (void *arg) { svm_queue_t *q; memory_client_main_t *mm = &memory_client_main; api_main_t *am = &api_main; int i; q = am->vl_input_queue; /* So we can make the rx thread terminate cleanly */ if (setjmp (mm->rx_thread_jmpbuf) == 0) { mm->rx_thread_jmpbuf_valid = 1; /* * Find an unused slot in the per-cpu-mheaps array, * and grab it for this thread. We need to be able to * push/pop the thread heap without affecting other thread(s). */ if (__os_thread_index == 0) { for (i = 0; i < ARRAY_LEN (clib_per_cpu_mheaps); i++) { if (clib_per_cpu_mheaps[i] == 0) { /* Copy the main thread mheap pointer */ clib_per_cpu_mheaps[i] = clib_per_cpu_mheaps[0]; __os_thread_index = i; break; } } ASSERT (__os_thread_index > 0); } while (1) vl_msg_api_queue_handler (q); } pthread_exit (0); } static void vl_api_rx_thread_exit_t_handler (vl_api_rx_thread_exit_t * mp) { memory_client_main_t *mm = &memory_client_main; vl_msg_api_free (mp); longjmp (mm->rx_thread_jmpbuf, 1); } static void vl_api_name_and_crc_free (void) { api_main_t *am = &api_main; int i; u8 **keys = 0; hash_pair_t *hp; if (!am->msg_index_by_name_and_crc) return; /* *INDENT-OFF* */ hash_foreach_pair (hp, am->msg_index_by_name_and_crc, ({ vec_add1 (keys, (u8 *) hp->key); })); /* *INDENT-ON* */ for (i = 0; i < vec_len (keys); i++) vec_free (keys[i]); vec_free (keys); hash_free (am->msg_index_by_name_and_crc); } static void vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp) { serialize_main_t _sm, *sm = &_sm; api_main_t *am = &api_main; u8 *tblv; u32 nmsgs; int i; u8 *name_and_crc; u32 msg_index; am->my_client_index = mp->index; am->my_registration = (vl_api_registration_t *) (uword) mp->handle; /* Clean out any previous hash table (unlikely) */ vl_api_name_and_crc_free (); am->msg_index_by_name_and_crc = hash_create_string (0, sizeof (uword)); /* Recreate the vnet-side API message handler table */ tblv = uword_to_pointer (mp->message_table, u8 *); unserialize_open_data (sm, tblv, vec_len (tblv)); unserialize_integer (sm, &nmsgs, sizeof (u32)); for (i = 0; i < nmsgs; i++) { msg_index = unserialize_likely_small_unsigned_integer (sm); unserialize_cstring (sm, (char **) &name_and_crc); hash_set_mem (am->msg_index_by_name_and_crc, name_and_crc, msg_index); } } static void noop_handler (void *notused) { } int vl_client_connect (const char *name, int ctx_quota, int input_queue_size) { svm_region_t *svm; vl_api_memclnt_create_t *mp; vl_api_memclnt_create_reply_t *rp; svm_queue_t *vl_input_queue; vl_shmem_hdr_t *shmem_hdr; int rv = 0; void *oldheap; api_main_t *am = &api_main; if (am->my_registration) { clib_warning ("client %s already connected...", name); return -1; } if (am->vlib_rp == 0) { clib_warning ("am->vlib_rp NULL"); return -1; } svm = am->vlib_rp; shmem_hdr = am->shmem_hdr; if (shmem_hdr == 0 || shmem_hdr->vl_input_queue == 0) { clib_warning ("shmem_hdr / input queue NULL"); return -1; } pthread_mutex_lock (&svm->mutex); oldheap = svm_push_data_heap (svm); vl_input_queue = svm_queue_alloc_and_init (input_queue_size, sizeof (uword), getpid ()); svm_pop_heap (oldheap); pthread_mutex_unlock (&svm->mutex); am->my_client_index = ~0; am->my_registration = 0; am->vl_input_queue = vl_input_queue; mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_create_t)); memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_CREATE); mp->ctx_quota = ctx_quota; mp->input_queue = (uword) vl_input_queue; strncpy ((char *) mp->name, name, sizeof (mp->name) - 1); vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp); while (1) { int qstatus; struct timespec ts, tsrem; int i; /* Wait up to 10 seconds */ for (i = 0; i < 1000; i++) { qst
/*
 *------------------------------------------------------------------
 * 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.
 * Yo