| # Copyright 2013, Big Switch Networks, Inc. |
| # |
| # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with |
| # the following special exception: |
| # |
| # LOXI Exception |
| # |
| # As a special exception to the terms of the EPL, you may distribute libraries |
| # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided |
| # that copyright and licensing notices generated by LoxiGen are not altered or removed |
| # from the LoxiGen Libraries and the notice provided below is (i) included in |
| # the LoxiGen Libraries, if distributed in source code form and (ii) included in any |
| # documentation for the LoxiGen Libraries, if distributed in binary form. |
| # |
| # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler." |
| # |
| # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain |
| # a copy of the EPL at: |
| # |
| # http://www.eclipse.org/legal/epl-v10.html |
| # |
| # 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 |
| # EPL for the specific language governing permissions and limitations |
| # under the EPL. |
| |
| ## |
| # @brief C code generation for LOXI type related maps |
| # |
| |
| import c_gen.of_g_legacy as of_g |
| import sys |
| from generic_utils import * |
| import c_gen.type_maps as type_maps |
| |
| def gen_type_data_header(out): |
| out.write(""" |
| /**************************************************************** |
| * Wire type/length functions. |
| ****************************************************************/ |
| |
| extern void of_object_message_wire_length_get(of_object_t *obj, int *bytes); |
| extern void of_object_message_wire_length_set(of_object_t *obj, int bytes); |
| |
| extern void of_oxm_wire_length_get(of_object_t *obj, int *bytes); |
| |
| extern void of_tlv16_wire_length_get(of_object_t *obj, int *bytes); |
| extern void of_tlv16_wire_length_set(of_object_t *obj, int bytes); |
| |
| /* Wire length is uint16 at front of structure */ |
| extern void of_u16_len_wire_length_get(of_object_t *obj, int *bytes); |
| extern void of_u16_len_wire_length_set(of_object_t *obj, int bytes); |
| |
| #define OF_OXM_LENGTH_GET(hdr) (((hdr) & 0xff) + 4) |
| #define OF_OXM_LENGTH_SET(hdr, val) \\ |
| (hdr) = ((hdr) & 0xffffff00) + (((val) - 4) & 0xff) |
| |
| extern void of_packet_queue_wire_length_get(of_object_t *obj, int *bytes); |
| extern void of_packet_queue_wire_length_set(of_object_t *obj, int bytes); |
| |
| extern void of_list_meter_band_stats_wire_length_get(of_object_t *obj, |
| int *bytes); |
| extern void of_meter_stats_wire_length_get(of_object_t *obj, int *bytes); |
| extern void of_meter_stats_wire_length_set(of_object_t *obj, int bytes); |
| |
| """) |
| |
| |
| def gen_length_array(out): |
| """ |
| Generate an array giving the lengths of all objects/versions |
| @param out The file handle to which to write |
| """ |
| out.write(""" |
| /** |
| * An array with the number of bytes in the fixed length part |
| * of each OF object |
| */ |
| """) |
| |
| for version in of_g.of_version_range: |
| out.write(""" |
| static const int\nof_object_fixed_len_v%d[OF_OBJECT_COUNT] = { |
| -1, /* of_object is not instantiable */ |
| """ % version) |
| for i, cls in enumerate(of_g.all_class_order): |
| comma = "," |
| if i == len(of_g.all_class_order) - 1: |
| comma = "" |
| val = "-1" + comma |
| if (cls, version) in of_g.base_length: |
| val = str(of_g.base_length[(cls, version)]) + comma |
| out.write(" %-5s /* %d: %s */\n" % (val, i + 1, cls)) |
| out.write("};\n") |
| |
| out.write(""" |
| /** |
| * Unified map of fixed length part of each object |
| */ |
| const int *const of_object_fixed_len[OF_VERSION_ARRAY_MAX] = { |
| NULL, |
| """) |
| for version in of_g.of_version_range: |
| out.write(" of_object_fixed_len_v%d,\n" % version) |
| out.write(""" |
| }; |
| """) |
| |
| |
| def gen_extra_length_array(out): |
| """ |
| Generate an array giving the extra lengths of all objects/versions |
| @param out The file handle to which to write |
| """ |
| out.write(""" |
| /** |
| * An array with the number of bytes in the extra length part |
| * of each OF object |
| */ |
| """) |
| |
| for version in of_g.of_version_range: |
| out.write(""" |
| static const int\nof_object_extra_len_v%d[OF_OBJECT_COUNT] = { |
| -1, /* of_object is not instantiable */ |
| """ % version) |
| for i, cls in enumerate(of_g.all_class_order): |
| comma = "," |
| if i == len(of_g.all_class_order) - 1: |
| comma = "" |
| val = "-1" + comma |
| if (cls, version) in of_g.base_length: |
| val = str(of_g.extra_length.get((cls, version), 0)) + comma |
| out.write(" %-5s /* %d: %s */\n" % (val, i + 1, cls)) |
| out.write("};\n") |
| |
| out.write(""" |
| /** |
| * Unified map of extra length part of each object |
| */ |
| const int *const of_object_extra_len[OF_VERSION_ARRAY_MAX] = { |
| NULL, |
| """) |
| for version in of_g.of_version_range: |
| out.write(" of_object_extra_len_v%d,\n" % version) |
| out.write(""" |
| }; |
| """) |