diff options
Diffstat (limited to 'src/tools/vppapigen/vppapigen_c.py')
| -rw-r--r-- | src/tools/vppapigen/vppapigen_c.py | 110 |
1 files changed, 100 insertions, 10 deletions
diff --git a/src/tools/vppapigen/vppapigen_c.py b/src/tools/vppapigen/vppapigen_c.py index 1e18a83e65e..f93e89843a3 100644 --- a/src/tools/vppapigen/vppapigen_c.py +++ b/src/tools/vppapigen/vppapigen_c.py @@ -210,7 +210,8 @@ class ToJSON(): if b[1] == 0: continue write(' if (a & {})\n'.format(b[0])) - write(' cJSON_AddItemToArray(array, cJSON_CreateString("{}"));\n'.format(b[0])) + write( + ' cJSON_AddItemToArray(array, cJSON_CreateString("{}"));\n'.format(b[0])) write(' return array;\n') write('}\n') @@ -685,7 +686,7 @@ TOP_BOILERPLATE = '''\ || defined(vl_printfun) ||defined(vl_endianfun) \\ || defined(vl_api_version)||defined(vl_typedefs) \\ || defined(vl_msg_name)||defined(vl_msg_name_crc_list) \\ - || defined(vl_api_version_tuple) + || defined(vl_api_version_tuple) || defined(vl_calcsizefun) /* ok, something was selected */ #else #warning no content included from {input_filename} @@ -750,7 +751,7 @@ def msg_name_crc_list(s, suffix): for t in s['Define']: output += "\\\n_(VL_API_%s, %s, %08x) " % \ - (t.name.upper(), t.name, t.crc) + (t.name.upper(), t.name, t.crc) output += "\n#endif" return output @@ -970,13 +971,13 @@ static inline void *vl_api_{name}_t_print{suffix} (vl_api_{name}_t *a, void *han write(signature.format(name=t.name, suffix='_json')) write(' cJSON * o = vl_api_{}_t_tojson(a);\n'.format(t.name)) - write(' (void)s;\n'); + write(' (void)s;\n') write(' char *out = cJSON_Print(o);\n') - write(' vl_print(handle, out);\n'); + write(' vl_print(handle, out);\n') write(' cJSON_Delete(o);\n') - write(' cJSON_free(out);\n'); + write(' cJSON_free(out);\n') write(' return handle;\n') - write('}\n\n'); + write('}\n\n') write("\n#endif") write("\n#endif /* vl_printfun */\n") @@ -1145,7 +1146,7 @@ static inline void vl_api_{name}_t_endian (vl_api_{name}_t *a) ''' for t in objs: - if t.__class__.__name__ == 'Enum' or t.__class__.__name__ == 'EnumFlag' : + if t.__class__.__name__ == 'Enum' or t.__class__.__name__ == 'EnumFlag': output += signature.format(name=t.name) if t.enumtype in ENDIAN_STRINGS: output += (' *a = {}(*a);\n' @@ -1187,6 +1188,78 @@ static inline void vl_api_{name}_t_endian (vl_api_{name}_t *a) return output +def calc_size_fun(objs, modulename): + '''Main entry point for calculate size function generation''' + output = '''\ + +/****** Calculate size functions *****/\n\ +#ifdef vl_calcsizefun +#ifndef included_{module}_calcsizefun +#define included_{module}_calcsizefun + +''' + output = output.format(module=modulename) + + signature = '''\ +/* calculate message size of message in network byte order */ +static inline uword vl_api_{name}_t_calc_size (vl_api_{name}_t *a) +{{ +''' + + for o in objs: + tname = o.__class__.__name__ + + output += signature.format(name=o.name) + output += f" return sizeof(*a)" + if tname == 'Using': + if 'length' in o.alias: + try: + tmp = int(o.alias['length']) + if tmp == 0: + raise (f"Unexpected length '0' for alias {o}") + except: + # output += f" + vl_api_{o.alias.name}_t_calc_size({o.name})" + print("culprit:") + print(o) + print(dir(o.alias)) + print(o.alias) + raise + elif tname == 'Enum' or tname == 'EnumFlag': + pass + else: + for b in o.block: + if b.type == 'Option': + continue + elif b.type == 'Field': + if b.fieldtype.startswith('vl_api_'): + output += f" - sizeof(a->{b.fieldname})" + output += f" + {b.fieldtype}_calc_size(&a->{b.fieldname})" + elif b.type == 'Array': + if b.lengthfield: + m = list(filter(lambda x: x.fieldname == b.lengthfield, o.block)) + if len(m) != 1: + raise Exception(f"Expected 1 match for field '{b.lengthfield}', got '{m}'") + lf = m[0] + if lf.fieldtype in ENDIAN_STRINGS: + output += f" + {ENDIAN_STRINGS[lf.fieldtype]}(a->{b.lengthfield}) * sizeof(a->{b.fieldname}[0])" + elif lf.fieldtype == "u8": + output += f" + a->{b.lengthfield} * sizeof(a->{b.fieldname}[0])" + else: + raise Exception(f"Don't know how to endian swap {lf.fieldtype}") + else: + # Fixed length strings decay to nul terminated u8 + if b.fieldtype == 'string': + if b.modern_vla: + output += f" + vl_api_string_len(&a->{b.fieldname})" + + output += ";\n" + output += '}\n\n' + output += "\n#endif" + output += "\n#endif /* vl_calcsizefun */\n\n" + + return output + + def version_tuple(s, module): '''Generate semantic version string''' output = '''\ @@ -1336,6 +1409,10 @@ def generate_c_boilerplate(services, defines, counters, file_crc, #include "{module}.api.h" #undef vl_endianfun +#define vl_calcsizefun +#include "{module}.api.h" +#undef vl_calsizefun + /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun @@ -1371,6 +1448,7 @@ def generate_c_boilerplate(services, defines, counters, file_crc, ' .print_json = vl_api_{n}_t_print_json,\n' ' .tojson = vl_api_{n}_t_tojson,\n' ' .fromjson = vl_api_{n}_t_fromjson,\n' + ' .calc_size = vl_api_{n}_t_calc_size,\n' ' .is_autoendian = {auto}}};\n' .format(n=s.caller, ID=s.caller.upper(), auto=d.autoendian)) @@ -1389,6 +1467,7 @@ def generate_c_boilerplate(services, defines, counters, file_crc, ' .print_json = vl_api_{n}_t_print_json,\n' ' .tojson = vl_api_{n}_t_tojson,\n' ' .fromjson = vl_api_{n}_t_fromjson,\n' + ' .calc_size = vl_api_{n}_t_calc_size,\n' ' .is_autoendian = {auto}}};\n' .format(n=s.reply, ID=s.reply.upper(), auto=d.autoendian)) @@ -1427,6 +1506,10 @@ def generate_c_test_boilerplate(services, defines, file_crc, module, plugin, #include "{module}.api.h" #undef vl_endianfun +#define vl_calcsizefun +#include "{module}.api.h" +#undef vl_calsizefun + /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun @@ -1488,7 +1571,8 @@ def generate_c_test_boilerplate(services, defines, file_crc, module, plugin, ' sizeof(vl_api_{n}_t), 1,\n' ' vl_api_{n}_t_print_json,\n' ' vl_api_{n}_t_tojson,\n' - ' vl_api_{n}_t_fromjson);\n' + ' vl_api_{n}_t_fromjson,\n' + ' vl_api_{n}_t_calc_size);\n' .format(n=s.reply, ID=s.reply.upper())) write(' hash_set_mem (vam->function_by_name, "{n}", api_{n});\n' .format(n=s.caller)) @@ -1510,7 +1594,8 @@ def generate_c_test_boilerplate(services, defines, file_crc, module, plugin, ' sizeof(vl_api_{n}_t), 1,\n' ' vl_api_{n}_t_print_json,\n' ' vl_api_{n}_t_tojson,\n' - ' vl_api_{n}_t_fromjson);\n' + ' vl_api_{n}_t_fromjson,\n' + ' vl_api_{n}_t_calc_size);\n' .format(n=e, ID=e.upper())) write('}\n') @@ -1729,6 +1814,10 @@ def generate_c_test2_boilerplate(services, defines, module, stream): #include "{module}.api.h" #undef vl_endianfun +#define vl_calcsizefun +#include "{module}.api.h" +#undef vl_calsizefun + #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include "{module}.api.h" @@ -1863,6 +1952,7 @@ def run(args, apifilename, s): output += stream.getvalue() stream.close() output += endianfun(s['types'] + s['Define'], modulename) + output += calc_size_fun(s['types'] + s['Define'], modulename) output += version_tuple(s, basename) output += BOTTOM_BOILERPLATE.format(input_filename=basename, file_crc=s['file_crc']) |