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authorKlement Sekera <ksekera@cisco.com>2017-06-09 06:06:49 +0200
committerNeale Ranns <nranns@cisco.com>2017-07-04 07:31:48 +0000
commitc156dda8cb5a46f3b53fd2a8b051c2ba7c56ec7e (patch)
tree8167da660705f8b17e468697b5b41a07ddaddc0b /src/vlibapi/api_common.h
parentbe055bd719559fc79d8a4c06479497c4c0bfae93 (diff)
Refactor API message handling code
This is preparation for new C API. Moving common stuff to separate headers reduces dependency issues. Change-Id: Ie7adb23398de72448e5eba6c1c1da4e1bc678725 Signed-off-by: Klement Sekera <ksekera@cisco.com> (cherry picked from commit 58eb866b15a45514dc356170f28640d6c9db8034)
Diffstat (limited to 'src/vlibapi/api_common.h')
-rw-r--r--src/vlibapi/api_common.h268
1 files changed, 268 insertions, 0 deletions
diff --git a/src/vlibapi/api_common.h b/src/vlibapi/api_common.h
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+++ b/src/vlibapi/api_common.h
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+/*
+ *------------------------------------------------------------------
+ * api_common.h
+ *
+ * Copyright (c) 2009-2015 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_api_common_h
+#define included_api_common_h
+
+#include <vppinfra/clib_error.h>
+#include <svm/svm_common.h>
+#include <vlibmemory/unix_shared_memory_queue.h>
+
+typedef enum
+{
+ REGISTRATION_TYPE_FREE = 0,
+ REGISTRATION_TYPE_SHMEM,
+ REGISTRATION_TYPE_SOCKET_LISTEN,
+ REGISTRATION_TYPE_SOCKET_SERVER,
+ REGISTRATION_TYPE_SOCKET_CLIENT,
+} vl_registration_type_t;
+
+typedef struct vl_api_registration_
+{
+ vl_registration_type_t registration_type;
+
+ /* Index in VLIB's brain (not shared memory). */
+ u32 vl_api_registration_pool_index;
+
+ u8 *name;
+
+ /*
+ * The following groups of data could be unioned, but my fingers are
+ * going to be sore enough.
+ */
+
+ /* shared memory only */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /* socket server and client */
+ u32 unix_file_index;
+ i8 *unprocessed_input;
+ u32 unprocessed_msg_length;
+ u8 *output_vector;
+
+ /* socket client only */
+ u32 server_handle;
+ u32 server_index;
+
+} vl_api_registration_t;
+
+
+/* Trace configuration for a single message */
+typedef struct
+{
+ int size;
+ int trace_enable;
+ int replay_enable;
+} trace_cfg_t;
+
+/*
+ * API recording
+ */
+typedef struct
+{
+ u8 endian;
+ u8 enabled;
+ u8 wrapped;
+ u8 pad;
+ u32 nitems;
+ u32 curindex;
+ u8 **traces;
+} vl_api_trace_t;
+
+typedef enum
+{
+ VL_API_TRACE_TX,
+ VL_API_TRACE_RX,
+} vl_api_trace_which_t;
+
+#define VL_API_LITTLE_ENDIAN 0x00
+#define VL_API_BIG_ENDIAN 0x01
+
+typedef struct
+{
+ u8 *name;
+ u16 first_msg_id;
+ u16 last_msg_id;
+} vl_api_msg_range_t;
+
+typedef struct
+{
+ int id;
+ char *name;
+ u32 crc;
+ void *handler;
+ void *cleanup;
+ void *endian;
+ void *print;
+ int size;
+ int traced;
+ int replay;
+ int message_bounce;
+ int is_mp_safe;
+} vl_msg_api_msg_config_t;
+
+typedef struct msgbuf_
+{
+ unix_shared_memory_queue_t *q;
+ u32 data_len;
+ u32 gc_mark_timestamp;
+ u8 data[0];
+} msgbuf_t;
+
+/* api_shared.c prototypes */
+void vl_msg_api_handler (void *the_msg);
+void vl_msg_api_handler_no_free (void *the_msg);
+void vl_msg_api_handler_no_trace_no_free (void *the_msg);
+void vl_msg_api_trace_only (void *the_msg);
+void vl_msg_api_cleanup_handler (void *the_msg);
+void vl_msg_api_replay_handler (void *the_msg);
+void vl_msg_api_socket_handler (void *the_msg);
+void vl_msg_api_set_handlers (int msg_id, char *msg_name,
+ void *handler,
+ void *cleanup,
+ void *endian,
+ void *print, int msg_size, int traced);
+void vl_msg_api_config (vl_msg_api_msg_config_t *);
+void vl_msg_api_set_cleanup_handler (int msg_id, void *fp);
+void vl_msg_api_queue_handler (unix_shared_memory_queue_t * q);
+
+void vl_msg_api_barrier_sync (void) __attribute__ ((weak));
+void vl_msg_api_barrier_release (void) __attribute__ ((weak));
+void vl_msg_api_free (void *);
+void vl_noop_handler (void *mp);
+void vl_msg_api_increment_missing_client_counter (void);
+void vl_msg_api_post_mortem_dump (void);
+void vl_msg_api_post_mortem_dump_enable_disable (int enable);
+void vl_msg_api_register_pd_handler (void *handler,
+ u16 msg_id_host_byte_order);
+int vl_msg_api_pd_handler (void *mp, int rv);
+
+void vl_msg_api_set_first_available_msg_id (u16 first_avail);
+u16 vl_msg_api_get_msg_ids (const char *name, int n);
+u32 vl_api_get_msg_index (u8 * name_and_crc);
+
+typedef clib_error_t *(vl_msg_api_init_function_t) (u32 client_index);
+
+typedef struct _vl_msg_api_init_function_list_elt
+{
+ struct _vl_msg_api_init_function_list_elt *next_init_function;
+ vl_msg_api_init_function_t *f;
+} _vl_msg_api_function_list_elt_t;
+
+typedef struct
+{
+ void (**msg_handlers) (void *);
+ int (**pd_msg_handlers) (void *, int);
+ void (**msg_cleanup_handlers) (void *);
+ void (**msg_endian_handlers) (void *);
+ void (**msg_print_handlers) (void *, void *);
+ const char **msg_names;
+ u8 *message_bounce;
+ u8 *is_mp_safe;
+ struct ring_alloc_ *arings;
+ u32 ring_misses;
+ u32 garbage_collects;
+ u32 missing_clients;
+ vl_api_trace_t *rx_trace;
+ vl_api_trace_t *tx_trace;
+ int msg_print_flag;
+ trace_cfg_t *api_trace_cfg;
+ int our_pid;
+ svm_region_t *vlib_rp;
+ svm_region_t **mapped_shmem_regions;
+ struct vl_shmem_hdr_ *shmem_hdr;
+ vl_api_registration_t **vl_clients;
+
+ u8 *serialized_message_table_in_shmem;
+
+ /* For plugin msg allocator */
+ u16 first_available_msg_id;
+
+ /* message range by name hash */
+ uword *msg_range_by_name;
+
+ /* vector of message ranges */
+ vl_api_msg_range_t *msg_ranges;
+
+ /* uid for the api shared memory region */
+ int api_uid;
+ /* gid for the api shared memory region */
+ int api_gid;
+
+ /* base virtual address for global VM region */
+ u64 global_baseva;
+
+ /* size of the global VM region */
+ u64 global_size;
+
+ /* size of the API region */
+ u64 api_size;
+
+ /* size of the global VM private mheap */
+ u64 global_pvt_heap_size;
+
+ /* size of the api private mheap */
+ u64 api_pvt_heap_size;
+
+ /* Client-only data structures */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /*
+ * All VLIB-side message handlers use my_client_index to identify
+ * the queue / client. This works in sim replay.
+ */
+ int my_client_index;
+ /*
+ * This is the (shared VM) address of the registration,
+ * don't use it to id the connection since it can't possibly
+ * work in simulator replay.
+ */
+ vl_api_registration_t *my_registration;
+
+ i32 vlib_signal;
+
+ /* vlib input queue length */
+ u32 vlib_input_queue_length;
+
+ /* client side message index hash table */
+ uword *msg_index_by_name_and_crc;
+
+ const char *region_name;
+ const char *root_path;
+
+ /* Replay in progress? */
+ int replay_in_progress;
+
+ /* List of API client reaper functions */
+ _vl_msg_api_function_list_elt_t *reaper_function_registrations;
+
+} api_main_t;
+
+extern api_main_t api_main;
+
+
+#endif /* included_api_common_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */