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authorKlement Sekera <ksekera@cisco.com>2017-05-04 06:15:18 +0200
committerNeale Ranns <nranns@cisco.com>2017-09-19 12:23:44 +0000
commit8f2a4eafeaa439432107563033728e09665c16d9 (patch)
treea8db2c9f35e169a2eb48a7f5aebb88f146029f5f /src/vpp-api/vapi/vapi_c_gen.py
parentf4215a65cb5858b276b0b096273270e7c017209d (diff)
Add new C API
Change-Id: I717ce3cd7c867c155de149ec56623269d26d0ff7 Signed-off-by: Klement Sekera <ksekera@cisco.com>
Diffstat (limited to 'src/vpp-api/vapi/vapi_c_gen.py')
-rwxr-xr-xsrc/vpp-api/vapi/vapi_c_gen.py809
1 files changed, 809 insertions, 0 deletions
diff --git a/src/vpp-api/vapi/vapi_c_gen.py b/src/vpp-api/vapi/vapi_c_gen.py
new file mode 100755
index 00000000000..2bc1eef87e5
--- /dev/null
+++ b/src/vpp-api/vapi/vapi_c_gen.py
@@ -0,0 +1,809 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+import sys
+import logging
+from vapi_json_parser import Field, Struct, Message, JsonParser,\
+ SimpleType, StructType
+
+
+class CField(Field):
+ def __init__(
+ self,
+ field_name,
+ field_type,
+ array_len=None,
+ nelem_field=None):
+ super().__init__(field_name, field_type, array_len, nelem_field)
+
+ def get_c_def(self):
+ if self.len is not None:
+ return "%s %s[%d]" % (self.type.get_c_name(), self.name, self.len)
+ else:
+ return "%s %s" % (self.type.get_c_name(), self.name)
+
+ def get_swap_to_be_code(self, struct, var):
+ if self.len is not None:
+ if self.len > 0:
+ return "do { int i; for (i = 0; i < %d; ++i) { %s } }"\
+ " while(0);" % (
+ self.len,
+ self.type.get_swap_to_be_code(struct, "%s[i]" % var))
+ else:
+ if self.nelem_field.needs_byte_swap():
+ nelem_field = "%s(%s%s)" % (
+ self.nelem_field.type.get_swap_to_host_func_name(),
+ struct, self.nelem_field.name)
+ else:
+ nelem_field = "%s%s" % (struct, self.nelem_field.name)
+ return (
+ "do { int i; for (i = 0; i < %s; ++i) { %s } }"
+ " while(0);" %
+ (nelem_field, self.type.get_swap_to_be_code(
+ struct, "%s[i]" % var)))
+ return self.type.get_swap_to_be_code(struct, "%s" % var)
+
+ def get_swap_to_host_code(self, struct, var):
+ if self.len is not None:
+ if self.len > 0:
+ return "do { int i; for (i = 0; i < %d; ++i) { %s } }"\
+ " while(0);" % (
+ self.len,
+ self.type.get_swap_to_host_code(struct, "%s[i]" % var))
+ else:
+ # nelem_field already swapped to host here...
+ return (
+ "do { int i; for (i = 0; i < %s%s; ++i) { %s } }"
+ " while(0);" %
+ (struct, self.nelem_field.name,
+ self.type.get_swap_to_host_code(
+ struct, "%s[i]" % var)))
+ return self.type.get_swap_to_host_code(struct, "%s" % var)
+
+ def needs_byte_swap(self):
+ return self.type.needs_byte_swap()
+
+
+class CStruct(Struct):
+ def __init__(self, name, fields):
+ super().__init__(name, fields)
+
+ def get_c_def(self):
+ return "\n".join([
+ "typedef struct __attribute__((__packed__)) {",
+ "%s;" % ";\n".join([" %s" % x.get_c_def()
+ for x in self.fields]),
+ "} %s;" % self.get_c_name()])
+
+
+class CSimpleType (SimpleType):
+
+ swap_to_be_dict = {
+ 'i16': 'htobe16', 'u16': 'htobe16',
+ 'i32': 'htobe32', 'u32': 'htobe32',
+ 'i64': 'htobe64', 'u64': 'htobe64',
+ }
+
+ swap_to_host_dict = {
+ 'i16': 'be16toh', 'u16': 'be16toh',
+ 'i32': 'be32toh', 'u32': 'be32toh',
+ 'i64': 'be64toh', 'u64': 'be64toh',
+ }
+
+ def __init__(self, name):
+ super().__init__(name)
+
+ def get_c_name(self):
+ return self.name
+
+ def get_swap_to_be_func_name(self):
+ return self.swap_to_be_dict[self.name]
+
+ def get_swap_to_host_func_name(self):
+ return self.swap_to_host_dict[self.name]
+
+ def get_swap_to_be_code(self, struct, var):
+ x = "%s%s" % (struct, var)
+ return "%s = %s(%s);" % (x, self.get_swap_to_be_func_name(), x)
+
+ def get_swap_to_host_code(self, struct, var):
+ x = "%s%s" % (struct, var)
+ return "%s = %s(%s);" % (x, self.get_swap_to_host_func_name(), x)
+
+ def needs_byte_swap(self):
+ try:
+ self.get_swap_to_host_func_name()
+ return True
+ except:
+ pass
+ return False
+
+
+class CStructType (StructType, CStruct):
+ def __init__(self, definition, typedict, field_class):
+ super().__init__(definition, typedict, field_class)
+
+ def get_c_name(self):
+ return "vapi_type_%s" % self.name
+
+ def get_swap_to_be_func_name(self):
+ return "%s_hton" % self.get_c_name()
+
+ def get_swap_to_host_func_name(self):
+ return "%s_ntoh" % self.get_c_name()
+
+ def get_swap_to_be_func_decl(self):
+ return "void %s(%s *msg)" % (
+ self.get_swap_to_be_func_name(), self.get_c_name())
+
+ def get_swap_to_be_func_def(self):
+ return "%s\n{\n%s\n}" % (
+ self.get_swap_to_be_func_decl(),
+ "\n".join([
+ " %s" % p.get_swap_to_be_code("msg->", "%s" % p.name)
+ for p in self.fields if p.needs_byte_swap()]),
+ )
+
+ def get_swap_to_host_func_decl(self):
+ return "void %s(%s *msg)" % (
+ self.get_swap_to_host_func_name(), self.get_c_name())
+
+ def get_swap_to_host_func_def(self):
+ return "%s\n{\n%s\n}" % (
+ self.get_swap_to_host_func_decl(),
+ "\n".join([
+ " %s" % p.get_swap_to_host_code("msg->", "%s" % p.name)
+ for p in self.fields if p.needs_byte_swap()]),
+ )
+
+ def get_swap_to_be_code(self, struct, var):
+ return "%s(&%s%s);" % (self.get_swap_to_be_func_name(), struct, var)
+
+ def get_swap_to_host_code(self, struct, var):
+ return "%s(&%s%s);" % (self.get_swap_to_host_func_name(), struct, var)
+
+ def needs_byte_swap(self):
+ for f in self.fields:
+ if f.needs_byte_swap():
+ return True
+ return False
+
+
+class CMessage (Message):
+ def __init__(self, logger, definition, typedict,
+ struct_type_class, simple_type_class, field_class):
+ super().__init__(logger, definition, typedict, struct_type_class,
+ simple_type_class, field_class)
+ self.payload_members = [
+ " %s" % p.get_c_def()
+ for p in self.fields
+ if p.type != self.header
+ ]
+
+ def has_payload(self):
+ return len(self.payload_members) > 0
+
+ def get_msg_id_name(self):
+ return "vapi_msg_id_%s" % self.name
+
+ def get_c_name(self):
+ return "vapi_msg_%s" % self.name
+
+ def get_payload_struct_name(self):
+ return "vapi_payload_%s" % self.name
+
+ def get_alloc_func_vla_field_length_name(self, field):
+ return "%s_array_size" % field.name
+
+ def get_alloc_func_name(self):
+ return "vapi_alloc_%s" % self.name
+
+ def get_alloc_func_decl(self):
+ return "%s* %s(struct vapi_ctx_s *ctx%s)" % (
+ self.get_c_name(),
+ self.get_alloc_func_name(),
+ "".join([", size_t %s" %
+ self.get_alloc_func_vla_field_length_name(f)
+ for f in self.fields
+ if f.nelem_field is not None]))
+
+ def get_alloc_func_def(self):
+ extra = []
+ if self.header.has_field('client_index'):
+ extra.append(
+ " msg->header.client_index = vapi_get_client_index(ctx);")
+ if self.header.has_field('context'):
+ extra.append(" msg->header.context = 0;")
+ return "\n".join([
+ "%s" % self.get_alloc_func_decl(),
+ "{",
+ " %s *msg = NULL;" % self.get_c_name(),
+ " const size_t size = sizeof(%s)%s;" % (
+ self.get_c_name(),
+ "".join([
+ " + sizeof(msg->payload.%s[0]) * %s" % (
+ f.name,
+ self.get_alloc_func_vla_field_length_name(f))
+ for f in self.fields
+ if f.nelem_field is not None
+ ])),
+ " msg = vapi_msg_alloc(ctx, size);",
+ " if (!msg) {",
+ " return NULL;",
+ " }",
+ ] + extra + [
+ " msg->header._vl_msg_id = vapi_lookup_vl_msg_id(ctx, %s);" %
+ self.get_msg_id_name(),
+ "\n".join([" msg->payload.%s = %s;" % (
+ f.nelem_field.name,
+ self.get_alloc_func_vla_field_length_name(f))
+ for f in self.fields
+ if f.nelem_field is not None]),
+ " return msg;",
+ "}"])
+
+ def get_calc_msg_size_func_name(self):
+ return "vapi_calc_%s_msg_size" % self.name
+
+ def get_calc_msg_size_func_decl(self):
+ return "uword %s(%s *msg)" % (
+ self.get_calc_msg_size_func_name(),
+ self.get_c_name())
+
+ def get_calc_msg_size_func_def(self):
+ return "\n".join([
+ "%s" % self.get_calc_msg_size_func_decl(),
+ "{",
+ " return sizeof(*msg)%s;" %
+ "".join(["+ msg->payload.%s * sizeof(msg->payload.%s[0])" % (
+ f.nelem_field.name,
+ f.name)
+ for f in self.fields
+ if f.nelem_field is not None
+ ]),
+ "}",
+ ])
+
+ def get_c_def(self):
+ if self.has_payload():
+ return "\n".join([
+ "typedef struct __attribute__ ((__packed__)) {",
+ "%s; " %
+ ";\n".join(self.payload_members),
+ "} %s;" % self.get_payload_struct_name(),
+ "",
+ "typedef struct __attribute__ ((__packed__)) {",
+ (" %s %s;" % (self.header.get_c_name(),
+ self.fields[0].name)
+ if self.header is not None else ""),
+ " %s payload;" % self.get_payload_struct_name(),
+ "} %s;" % self.get_c_name(), ])
+ else:
+ return "\n".join([
+ "typedef struct __attribute__ ((__packed__)) {",
+ (" %s %s;" % (self.header.get_c_name(),
+ self.fields[0].name)
+ if self.header is not None else ""),
+ "} %s;" % self.get_c_name(), ])
+
+ def get_swap_payload_to_host_func_name(self):
+ return "%s_payload_ntoh" % self.get_c_name()
+
+ def get_swap_payload_to_be_func_name(self):
+ return "%s_payload_hton" % self.get_c_name()
+
+ def get_swap_payload_to_host_func_decl(self):
+ return "void %s(%s *payload)" % (
+ self.get_swap_payload_to_host_func_name(),
+ self.get_payload_struct_name())
+
+ def get_swap_payload_to_be_func_decl(self):
+ return "void %s(%s *payload)" % (
+ self.get_swap_payload_to_be_func_name(),
+ self.get_payload_struct_name())
+
+ def get_swap_payload_to_be_func_def(self):
+ return "%s\n{\n%s\n}" % (
+ self.get_swap_payload_to_be_func_decl(),
+ "\n".join([
+ " %s" % p.get_swap_to_be_code("payload->", "%s" % p.name)
+ for p in self.fields
+ if p.needs_byte_swap() and p.type != self.header]),
+ )
+
+ def get_swap_payload_to_host_func_def(self):
+ return "%s\n{\n%s\n}" % (
+ self.get_swap_payload_to_host_func_decl(),
+ "\n".join([
+ " %s" % p.get_swap_to_host_code("payload->", "%s" % p.name)
+ for p in self.fields
+ if p.needs_byte_swap() and p.type != self.header]),
+ )
+
+ def get_swap_to_host_func_name(self):
+ return "%s_ntoh" % self.get_c_name()
+
+ def get_swap_to_be_func_name(self):
+ return "%s_hton" % self.get_c_name()
+
+ def get_swap_to_host_func_decl(self):
+ return "void %s(%s *msg)" % (
+ self.get_swap_to_host_func_name(), self.get_c_name())
+
+ def get_swap_to_be_func_decl(self):
+ return "void %s(%s *msg)" % (
+ self.get_swap_to_be_func_name(), self.get_c_name())
+
+ def get_swap_to_be_func_def(self):
+ return "\n".join([
+ "%s" % self.get_swap_to_be_func_decl(),
+ "{",
+ (" VAPI_DBG(\"Swapping `%s'@%%p to big endian\", msg);" %
+ self.get_c_name()),
+ " %s(&msg->header);" % self.header.get_swap_to_be_func_name()
+ if self.header is not None else "",
+ " %s(&msg->payload);" % self.get_swap_payload_to_be_func_name()
+ if self.has_payload() else "",
+ "}",
+ ])
+
+ def get_swap_to_host_func_def(self):
+ return "\n".join([
+ "%s" % self.get_swap_to_host_func_decl(),
+ "{",
+ (" VAPI_DBG(\"Swapping `%s'@%%p to host byte order\", msg);" %
+ self.get_c_name()),
+ " %s(&msg->header);" % self.header.get_swap_to_host_func_name()
+ if self.header is not None else "",
+ " %s(&msg->payload);" % self.get_swap_payload_to_host_func_name()
+ if self.has_payload() else "",
+ "}",
+ ])
+
+ def get_op_func_name(self):
+ return "vapi_%s" % self.name
+
+ def get_op_func_decl(self):
+ if self.reply.has_payload():
+ return "vapi_error_e %s(%s)" % (
+ self.get_op_func_name(),
+ ",\n ".join([
+ 'struct vapi_ctx_s *ctx',
+ '%s *msg' % self.get_c_name(),
+ 'vapi_error_e (*callback)(struct vapi_ctx_s *ctx',
+ ' void *callback_ctx',
+ ' vapi_error_e rv',
+ ' bool is_last',
+ ' %s *reply)' %
+ self.reply.get_payload_struct_name(),
+ 'void *callback_ctx',
+ ])
+ )
+ else:
+ return "vapi_error_e %s(%s)" % (
+ self.get_op_func_name(),
+ ",\n ".join([
+ 'struct vapi_ctx_s *ctx',
+ '%s *msg' % self.get_c_name(),
+ 'vapi_error_e (*callback)(struct vapi_ctx_s *ctx',
+ ' void *callback_ctx',
+ ' vapi_error_e rv',
+ ' bool is_last)',
+ 'void *callback_ctx',
+ ])
+ )
+
+ def get_op_func_def(self):
+ return "\n".join([
+ "%s" % self.get_op_func_decl(),
+ "{",
+ " if (!msg || !callback) {",
+ " return VAPI_EINVAL;",
+ " }",
+ " if (vapi_is_nonblocking(ctx) && vapi_requests_full(ctx)) {",
+ " return VAPI_EAGAIN;",
+ " }",
+ " vapi_error_e rv;",
+ " if (VAPI_OK != (rv = vapi_producer_lock (ctx))) {",
+ " return rv;",
+ " }",
+ " u32 req_context = vapi_gen_req_context(ctx);",
+ " msg->header.context = req_context;",
+ " %s(msg);" % self.get_swap_to_be_func_name(),
+ (" if (VAPI_OK == (rv = vapi_send_with_control_ping "
+ "(ctx, msg, req_context))) {"
+ if self.is_dump() else
+ " if (VAPI_OK == (rv = vapi_send (ctx, msg))) {"
+ ),
+ (" vapi_store_request(ctx, req_context, %s, "
+ "(vapi_cb_t)callback, callback_ctx);" %
+ ("true" if self.is_dump() else "false")),
+ " if (VAPI_OK != vapi_producer_unlock (ctx)) {",
+ " abort (); /* this really shouldn't happen */",
+ " }",
+ " if (vapi_is_nonblocking(ctx)) {",
+ " rv = VAPI_OK;",
+ " } else {",
+ " rv = vapi_dispatch(ctx);",
+ " }",
+ " } else {",
+ " %s(msg);" % self.get_swap_to_host_func_name(),
+ " if (VAPI_OK != vapi_producer_unlock (ctx)) {",
+ " abort (); /* this really shouldn't happen */",
+ " }",
+ " }",
+ " return rv;",
+ "}",
+ "",
+ ])
+
+ def get_event_cb_func_decl(self):
+ if not self.is_reply():
+ raise Exception(
+ "Cannot register event callback for non-reply function")
+ if self.has_payload():
+ return "\n".join([
+ "void vapi_set_%s_event_cb (" %
+ self.get_c_name(),
+ " struct vapi_ctx_s *ctx, ",
+ (" vapi_error_e (*callback)(struct vapi_ctx_s *ctx, "
+ "void *callback_ctx, %s *payload)," %
+ self.get_payload_struct_name()),
+ " void *callback_ctx)",
+ ])
+ else:
+ return "\n".join([
+ "void vapi_set_%s_event_cb (" %
+ self.get_c_name(),
+ " struct vapi_ctx_s *ctx, ",
+ " vapi_error_e (*callback)(struct vapi_ctx_s *ctx, "
+ "void *callback_ctx),",
+ " void *callback_ctx)",
+ ])
+
+ def get_event_cb_func_def(self):
+ if not self.is_reply():
+ raise Exception(
+ "Cannot register event callback for non-reply function")
+ return "\n".join([
+ "%s" % self.get_event_cb_func_decl(),
+ "{",
+ (" vapi_set_event_cb(ctx, %s, (vapi_event_cb)callback, "
+ "callback_ctx);" %
+ self.get_msg_id_name()),
+ "}"])
+
+ def get_c_metadata_struct_name(self):
+ return "__vapi_metadata_%s" % self.name
+
+ def get_c_constructor(self):
+ has_context = False
+ if self.header is not None:
+ has_context = self.header.has_field('context')
+ return '\n'.join([
+ 'static void __attribute__((constructor)) __vapi_constructor_%s()'
+ % self.name,
+ '{',
+ ' static const char name[] = "%s";' % self.name,
+ ' static const char name_with_crc[] = "%s_%s";'
+ % (self.name, self.crc[2:]),
+ ' static vapi_message_desc_t %s = {' %
+ self.get_c_metadata_struct_name(),
+ ' name,',
+ ' sizeof(name) - 1,',
+ ' name_with_crc,',
+ ' sizeof(name_with_crc) - 1,',
+ ' true,' if has_context else ' false,',
+ ' offsetof(%s, context),' % self.header.get_c_name()
+ if has_context else ' 0,',
+ (' offsetof(%s, payload),' % self.get_c_name())
+ if self.has_payload() else '-1,',
+ ' sizeof(%s),' % self.get_c_name(),
+ ' (generic_swap_fn_t)%s,' % self.get_swap_to_be_func_name(),
+ ' (generic_swap_fn_t)%s,' % self.get_swap_to_host_func_name(),
+ ' ~0,',
+ ' };',
+ '',
+ ' %s = vapi_register_msg(&%s);' %
+ (self.get_msg_id_name(), self.get_c_metadata_struct_name()),
+ ' VAPI_DBG("Assigned msg id %%d to %s", %s);' %
+ (self.name, self.get_msg_id_name()),
+ '}',
+ ])
+
+
+vapi_send_with_control_ping = """
+static inline vapi_error_e
+vapi_send_with_control_ping (vapi_ctx_t ctx, void *msg, u32 context)
+{
+ vapi_msg_control_ping *ping = vapi_alloc_control_ping (ctx);
+ if (!ping)
+ {
+ return VAPI_ENOMEM;
+ }
+ ping->header.context = context;
+ vapi_msg_control_ping_hton (ping);
+ return vapi_send2 (ctx, msg, ping);
+}
+"""
+
+
+def gen_json_header(parser, logger, j, io):
+ logger.info("Generating header `%s'" % io.name)
+ orig_stdout = sys.stdout
+ sys.stdout = io
+ include_guard = "__included_%s" % (
+ j.replace(".", "_").replace("/", "_").replace("-", "_"))
+ print("#ifndef %s" % include_guard)
+ print("#define %s" % include_guard)
+ print("")
+ print("#include <vapi_internal.h>")
+ print("")
+ if io.name == "vpe.api.vapi.h":
+ print("static inline vapi_error_e vapi_send_with_control_ping "
+ "(vapi_ctx_t ctx, void * msg, u32 context);")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("extern vapi_msg_id_t %s;" % m.get_msg_id_name())
+ print("")
+ for t in parser.types_by_json[j].values():
+ try:
+ print("%s" % t.get_c_def())
+ print("")
+ except:
+ pass
+ for t in parser.types_by_json[j].values():
+ print("%s;" % t.get_swap_to_be_func_decl())
+ print("")
+ print("%s;" % t.get_swap_to_host_func_decl())
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("%s" % m.get_c_def())
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if not m.is_reply():
+ print("%s;" % m.get_alloc_func_decl())
+ print("")
+ print("%s;" % m.get_op_func_decl())
+ if m.has_payload():
+ print("%s;" % m.get_swap_payload_to_be_func_decl())
+ print("")
+ print("%s;" % m.get_swap_payload_to_host_func_decl())
+ print("")
+ print("%s;" % m.get_calc_msg_size_func_decl())
+ print("")
+ print("%s;" % m.get_swap_to_host_func_decl())
+ print("")
+ print("%s;" % m.get_swap_to_be_func_decl())
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if not m.is_reply():
+ continue
+ print("%s;" % m.get_event_cb_func_decl())
+ print("")
+
+ if io.name == "vpe.api.vapi.h":
+ print("%s" % vapi_send_with_control_ping)
+ print("")
+
+ print("#endif")
+ sys.stdout = orig_stdout
+
+
+def gen_json_code(parser, logger, j, io):
+ logger.info("Generating code `%s'" % io.name)
+ orig_stdout = sys.stdout
+ sys.stdout = io
+ print("#include <%s>" % json_to_header_name(j))
+ print("#include <stdlib.h>")
+ print("#include <stddef.h>")
+ print("#include <arpa/inet.h>")
+ print("#include <vapi_internal.h>")
+ print("#include <vapi_dbg.h>")
+ print("")
+ for t in parser.types_by_json[j].values():
+ print("%s" % t.get_swap_to_be_func_def())
+ print("")
+ print("%s" % t.get_swap_to_host_func_def())
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if m.has_payload():
+ print("%s" % m.get_swap_payload_to_be_func_def())
+ print("")
+ print("%s" % m.get_swap_payload_to_host_func_def())
+ print("")
+ print("%s" % m.get_calc_msg_size_func_def())
+ print("")
+ print("%s" % m.get_swap_to_be_func_def())
+ print("")
+ print("%s" % m.get_swap_to_host_func_def())
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if m.is_reply():
+ continue
+ print("%s" % m.get_alloc_func_def())
+ print("")
+ print("%s" % m.get_op_func_def())
+ print("")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("%s" % m.get_c_constructor())
+ print("")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if not m.is_reply():
+ continue
+ print("%s;" % m.get_event_cb_func_def())
+ print("")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("vapi_msg_id_t %s;" % m.get_msg_id_name())
+ sys.stdout = orig_stdout
+
+
+def gen_json_unified_header(parser, logger, j, io):
+ logger.info("Generating header `%s'" % io.name)
+ orig_stdout = sys.stdout
+ sys.stdout = io
+ include_guard = "__included_%s" % (
+ j.replace(".", "_").replace("/", "_").replace("-", "_"))
+ print("#ifndef %s" % include_guard)
+ print("#define %s" % include_guard)
+ print("")
+ print("#include <vapi_internal.h>")
+ print("#include <vapi.h>")
+ print("#include <stdlib.h>")
+ print("#include <stddef.h>")
+ print("#include <arpa/inet.h>")
+ print("#include <vapi_dbg.h>")
+ if io.name == "vpe.api.vapi.h":
+ print("")
+ print("static inline vapi_error_e vapi_send_with_control_ping "
+ "(vapi_ctx_t ctx, void * msg, u32 context);")
+ else:
+ print("#include <vpe.api.vapi.h>")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("extern vapi_msg_id_t %s;" % m.get_msg_id_name())
+ print("")
+ print("#define DEFINE_VAPI_MSG_IDS_%s\\" %
+ j.replace(".", "_").replace("/", "_").replace("-", "_").upper())
+ print("\\\n".join([
+ " vapi_msg_id_t %s;" % m.get_msg_id_name()
+ for m in parser.messages_by_json[j].values()
+ ]))
+ print("")
+ print("")
+ for t in parser.types_by_json[j].values():
+ try:
+ print("%s" % t.get_c_def())
+ print("")
+ except:
+ pass
+ for m in parser.messages_by_json[j].values():
+ print("%s" % m.get_c_def())
+ print("")
+
+ print("")
+ function_attrs = "static inline "
+ for t in parser.types_by_json[j].values():
+ print("%s%s" % (function_attrs, t.get_swap_to_be_func_def()))
+ print("")
+ print("%s%s" % (function_attrs, t.get_swap_to_host_func_def()))
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if m.has_payload():
+ print("%s%s" % (function_attrs,
+ m.get_swap_payload_to_be_func_def()))
+ print("")
+ print("%s%s" % (function_attrs,
+ m.get_swap_payload_to_host_func_def()))
+ print("")
+ print("%s%s" % (function_attrs, m.get_calc_msg_size_func_def()))
+ print("")
+ print("%s%s" % (function_attrs, m.get_swap_to_be_func_def()))
+ print("")
+ print("%s%s" % (function_attrs, m.get_swap_to_host_func_def()))
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if m.is_reply():
+ continue
+ print("%s%s" % (function_attrs, m.get_alloc_func_def()))
+ print("")
+ print("%s%s" % (function_attrs, m.get_op_func_def()))
+ print("")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ print("%s" % m.get_c_constructor())
+ print("")
+ print("")
+ for m in parser.messages_by_json[j].values():
+ if not m.is_reply():
+ continue
+ print("%s%s;" % (function_attrs, m.get_event_cb_func_def()))
+ print("")
+ print("")
+
+ if io.name == "vpe.api.vapi.h":
+ print("%s" % vapi_send_with_control_ping)
+ print("")
+
+ print("#endif")
+ sys.stdout = orig_stdout
+
+
+def json_to_header_name(json_name):
+ if json_name.endswith(".json"):
+ return "%s.vapi.h" % os.path.splitext(json_name)[0]
+ raise Exception("Unexpected json name `%s'!" % json_name)
+
+
+def json_to_code_name(json_name):
+ if json_name.endswith(".json"):
+ return "%s.vapi.c" % os.path.splitext(json_name)[0]
+ raise Exception("Unexpected json name `%s'!" % json_name)
+
+
+def gen_c_headers_and_code(parser, logger, prefix):
+ if prefix == "" or prefix is None:
+ prefix = ""
+ else:
+ prefix = "%s/" % prefix
+ for j in parser.json_files:
+ with open('%s%s' % (prefix, json_to_header_name(j)), "w") as io:
+ gen_json_header(parser, logger, j, io)
+ with open('%s%s' % (prefix, json_to_code_name(j)), "w") as io:
+ gen_json_code(parser, logger, j, io)
+
+
+def gen_c_unified_headers(parser, logger, prefix):
+ if prefix == "" or prefix is None:
+ prefix = ""
+ else:
+ prefix = "%s/" % prefix
+ for j in parser.json_files:
+ with open('%s%s' % (prefix, json_to_header_name(j)), "w") as io:
+ gen_json_unified_header(parser, logger, j, io)
+
+
+if __name__ == '__main__':
+ try:
+ verbose = int(os.getenv("V", 0))
+ except:
+ verbose = 0
+
+ if verbose >= 2:
+ log_level = 10
+ elif verbose == 1:
+ log_level = 20
+ else:
+ log_level = 40
+
+ logging.basicConfig(stream=sys.stdout, level=log_level)
+ logger = logging.getLogger("VAPI C GEN")
+ logger.setLevel(log_level)
+
+ argparser = argparse.ArgumentParser(description="VPP JSON API parser")
+ argparser.add_argument('files', metavar='api-file', action='append',
+ type=str, help='json api file'
+ '(may be specified multiple times)')
+ argparser.add_argument('--prefix', action='store', default=None,
+ help='path prefix')
+ args = argparser.parse_args()
+
+ jsonparser = JsonParser(logger, args.files,
+ simple_type_class=CSimpleType,
+ struct_type_class=CStructType,
+ field_class=CField,
+ message_class=CMessage)
+
+ # not using the model of having separate generated header and code files
+ # with generated symbols present in shared library (per discussion with
+ # Damjan), to avoid symbol version issues in .so
+ # gen_c_headers_and_code(jsonparser, logger, args.prefix)
+
+ gen_c_unified_headers(jsonparser, logger, args.prefix)
+
+ for e in jsonparser.exceptions:
+ logger.error(e)