/* *------------------------------------------------------------------ * 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. *------------------------------------------------------------------ */ #ifndef included_vlibmemory_api_common_h #define included_vlibmemory_api_common_h #include #include #include #include /* Allocated in shared memory */ /* * Ring-allocation scheme for client API messages * * Only one proc/thread has control of a given message buffer. * To free a buffer allocated from one of these rings, we clear * a field in the buffer (header), and leave. * * No locks, no hits, no errors... */ typedef struct ring_alloc_ { unix_shared_memory_queue_t *rp; u16 size; u16 nitems; u32 hits; u32 misses; } ring_alloc_t; /* * Initializers for the (shared-memory) rings * _(size, n). Note: each msg has space for a header. */ #define foreach_vl_aring_size \ _(64+sizeof(ring_alloc_t), 1024) \ _(256+sizeof(ring_alloc_t), 128) \ _(1024+sizeof(ring_alloc_t), 64) #define foreach_clnt_aring_size \ _(1024+sizeof(ring_alloc_t), 1024) \ _(2048+sizeof(ring_alloc_t), 128) \ _(4096+sizeof(ring_alloc_t), 8) typedef struct vl_shmem_hdr_ { int version; /* getpid () for the VLIB client process */ volatile int vl_pid; /* Client sends VLIB msgs here. */ unix_shared_memory_queue_t *vl_input_queue; /* Vector of rings; one for each size. */ /* VLIB allocates buffers to send msgs to clients here. */ ring_alloc_t *vl_rings; /* Clients allocate buffer to send msgs to VLIB here. */ ring_alloc_t *client_rings; /* Number of detected application restarts */ u32 application_restarts; /* Number of messages reclaimed during application restart */ u32 restart_reclaims; /* Number of garbage-collected messages */ u32 garbage_collects; } vl_shmem_hdr_t; #define VL_SHM_VERSION 2 #define VL_API_EPOCH_MASK 0xFF #define VL_API_EPOCH_SHIFT 8 void *vl_msg_api_alloc (int nbytes); void *vl_msg_api_alloc_or_null (int nbytes); void *vl_msg_api_alloc_as_if_client (int nbytes); void *vl_msg_api_alloc_as_if_client_or_null (int nbytes); void vl_msg_api_free (void *a); int vl_map_shmem (const char *region_name, int is_vlib); void vl_register_mapped_shmem_region (svm_region_t * rp); void vl_unmap_shmem (void); void vl_msg_api_send_shmem (unix_shared_memory_queue_t * q, u8 * elem); void vl_msg_api_send_shmem_nolock (unix_shared_memory_queue_t * q, u8 * elem); void vl_msg_api_send (vl_api_registration_t * rp, u8 * elem); int vl_client_connect (const char *name, int ctx_quota, int input_queue_size); void vl_client_disconnect (void); unix_shared_memory_queue_t *vl_api_client_index_to_input_queue (u32 index); vl_api_registration_t *vl_api_client_index_to_registration (u32 index); int vl_client_api_map (const char *region_name); void vl_client_api_unmap (void); void vl_set_memory_region_name (const char *name); void vl_set_memory_root_path (const char *root_path); void vl_set_memory_uid (int uid); void vl_set_memory_gid (int gid); void vl_set_global_memory_baseva (u64 baseva); void vl_set_global_memory_size (u64 size); void vl_set_api_memory_size (u64 size); void vl_set_global_pvt_heap_size (u64 size); void vl_set_api_pvt_heap_size (u64 size); void vl_client_disconnect_from_vlib (void); int vl_client_connect_to_vlib (const char *svm_name, const char *client_name, int rx_queue_size); int vl_client_connect_to_vlib_no_rx_pthread (const char *svm_name, const char *client_name, int rx_queue_size); int vl_client_connect_to_vlib_no_map (const char *svm_name, const char *client_name, int rx_queue_size); u16 vl_client_get_first_plugin_msg_id (const char *plugin_name); void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length); u32 vl_api_memclnt_create_internal (char *, unix_shared_memory_queue_t *); void vl_init_shmem (svm_region_t * vlib_rp, int is_vlib, int is_private_region); void vl_client_install_client_message_handlers (void); void vl_api_send_pending_rpc_requests (vlib_main_t * vm); /* API messages over sockets */ extern vlib_node_registration_t memclnt_node; extern volatile int **vl_api_queue_cursizes; /* Events sent to the memclnt process */ #define QUEUE_SIGNAL_EVENT 1 #define SOCKET_READ_EVENT 2 #define API_SOCKET_FILE "/run/vpp-api.sock" typedef struct { clib_file_t *clib_file; vl_api_registration_t *regp; u8 *data; } vl_socket_args_for_process_t; typedef struct { /* Server port number */ u8 *socket_name; /* By default, localhost... */ u32 bind_address; /* * (listen, server, client) registrations. Shared memory * registrations are in shared memory */ vl_api_registration_t *registration_pool; /* * Chain-drag variables, so message API handlers * (generally) don't know whether they're talking to a socket * or to a shared-memory connection. */ vl_api_registration_t *current_rp; clib_file_t *current_uf; /* One input buffer, shared across all sockets */ i8 *input_buffer; /* pool of process args for socket clients */ vl_socket_args_for_process_t *process_args; /* Listen for API connections here */ clib_socket_t socksvr_listen_socket; } socket_main_t; extern socket_main_t socket_main; typedef struct { int socket_fd; /* Temporarily disable the connection, so we can keep it around... */ int socket_enable; clib_socket_t client_socket; u32 socket_buffer_size; u8 *socket_tx_buffer; u8 *socket_rx_buffer; u32 socket_tx_nbytes; int control_pings_outstanding; } socket_client_main_t; extern socket_client_main_t socket_client_main; #define SOCKET_CLIENT_DEFAULT_BUFFER_SIZE 4096 void socksvr_add_pending_output (struct clib_file *uf, struct vl_api_registration_ *cf, u8 * buffer, uword buffer_bytes); void vl_free_socket_registration_index (u32 pool_index); void vl_socket_process_msg (struct clib_file *uf, struct vl_api_registration_ *rp, i8 * input_v); clib_error_t *vl_socket_read_ready (struct clib_file *uf); void vl_socket_add_pending_output (struct clib_file *uf, struct vl_api_registration_ *rp, u8 * buffer, uword buffer_bytes); void vl_socket_add_pending_output_no_flush (struct clib_file *uf, struct vl_api_registration_ *rp, u8 * buffer, uword buffer_bytes); clib_error_t *vl_socket_write_ready (struct clib_file *uf); void vl_socket_api_send (vl_api_registration_t * rp, u8 * elem); u32 sockclnt_open_index (char *client_name, char *hostname, int port); void sockclnt_close_index (u32 index); void vl_client_msg_api_send (vl_api_registration_t * cm, u8 * elem); vl_api_registration_t *sockclnt_get_registration (u32 index); void vl_api_socket_process_msg (clib_file_t * uf, vl_api_registration_t * rp, i8 * input_v); int vl_socket_client_connect (socket_client_main_t * scm, char *socket_path, char *client_name, u32 socket_buffer_size); void vl_socket_client_read_reply (socket_client_main_t * scm); void vl_socket_client_enable_disable (socket_client_main_t * scm, int enable); #endif /* included_vlibmemory_api_common_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */