include/openflow/netronome-ext.h

   1 /*
   2  * Copyright (c) 2014 Netronome.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef OPENFLOW_NETRONOME_EXT_H
  18 #define OPENFLOW_NETRONOME_EXT_H 1
  19
  20 #include "openflow/openflow.h"
  21 #include "openvswitch/types.h"
  22
  23 /* The following vendor extension, proposed by Netronome, is not yet
  24  * standardized, so they are not included in openflow.h.  It may
  25  * be suitable for standardization */
  26
  27 \f
  28 /* Netronome enhanced select group */
  29
  30 enum ntr_group_mod_subtype {
  31         NTRT_SELECTION_METHOD = 1,
  32 };
  33
  34 #define NTR_MAX_SELECTION_METHOD_LEN 16
  35
  36 struct ntr_group_prop_selection_method {
  37     ovs_be16 type;                  /* OFPGPT15_EXPERIMENTER. */
  38     ovs_be16 length;                /* Length in bytes of this property
  39                                      * excluding trailing padding. */
  40     ovs_be32 experimenter;          /* NTR_VENDOR_ID. */
  41     ovs_be32 exp_type;              /* NTRT_SELECTION_METHOD. */
  42     ovs_be32 pad;
  43     char selection_method[NTR_MAX_SELECTION_METHOD_LEN];
  44                                     /* Null-terminated */
  45     ovs_be64 selection_method_param;  /* Non-Field parameter for
  46                                        * bucket selection. */
  47
  48     /* Followed by:
  49      *   - Exactly (length - 40) (possibly 0) bytes containing OXM TLVs, then
  50      *   - Exactly ((length + 7)/8*8 - length) (between 0 and 7) bytes of
  51      *     all-zero bytes
  52      * In summary, ntr_group_prop_selection_method is padded as needed,
  53      * to make its overall size a multiple of 8, to preserve alignment
  54      * in structures using it.
  55      */
  56     /* uint8_t field_array[0]; */   /* Zero or more fields encoded as
  57                                      * OXM TLVs where the has_mask bit must
  58                                      * be zero and the value it specifies is
  59                                      * a mask to apply to packet fields and
  60                                      * then input them to the selection
  61                                      * method of a select group. */
  62     /* uint8_t pad2[0]; */
  63 };
  64 OFP_ASSERT(sizeof(struct ntr_group_prop_selection_method) == 40);
  65
  66 #endif /* openflow/netronome-ext.h */