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   1 /*
   2  * Copyright (c) 2013 The TCPDUMP project
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  15  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  16  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  17  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  18  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  22  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  * POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /* OpenFlow: protocol between controller and datapath. */
  29
  30 /* for netdissect_options */
  31 #include "netdissect.h"
  32
  33 #define OF_FWD(n) { \
  34         cp += (n); \
  35         len -= (n); \
  36 }
  37
  38 #define OF_CHK_FWD(n) { \
  39         ND_TCHECK_LEN(cp, (n)); \
  40         cp += (n); \
  41         len -= (n); \
  42 }
  43
  44 #define OF_VER_1_0 0x01U
  45 #define OF_VER_1_1 0x02U
  46 #define OF_VER_1_2 0x03U
  47 #define OF_VER_1_3 0x04U
  48 #define OF_VER_1_4 0x05U
  49 #define OF_VER_1_5 0x06U
  50
  51 #define OF_HEADER_FIXLEN 8U
  52
  53 #define ONF_EXP_ONF               0x4f4e4600
  54 #define ONF_EXP_BUTE              0xff000001
  55 #define ONF_EXP_NOVIFLOW          0xff000002
  56 #define ONF_EXP_L3                0xff000003
  57 #define ONF_EXP_L4L7              0xff000004
  58 #define ONF_EXP_WMOB              0xff000005
  59 #define ONF_EXP_FABS              0xff000006
  60 #define ONF_EXP_OTRANS            0xff000007
  61 #define ONF_EXP_NBLNCTU           0xff000008
  62 #define ONF_EXP_MPCE              0xff000009
  63 #define ONF_EXP_MPLSTPSPTN        0xff00000a
  64 extern const struct tok onf_exp_str[];
  65
  66 extern const char * of_vendor_name(const uint32_t);
  67 extern void of_bitmap_print(netdissect_options *ndo,
  68         const struct tok *, const uint32_t, const uint32_t);
  69 extern void of_data_print(netdissect_options *ndo,
  70         const u_char *, const u_int);
  71
  72 /*
  73  * Routines to handle various versions of OpenFlow.
  74  */
  75
  76 struct of_msgtypeinfo {
  77         /* Should not be NULL. */
  78         const char *name;
  79         /* May be NULL to mean "message body printing is not implemented". */
  80         void (*decoder)(netdissect_options *ndo, const u_char *, const u_int);
  81         enum {
  82                 REQ_NONE,   /* Message body length may be anything. */
  83                 REQ_FIXLEN, /* Message body length must be == req_value. */
  84                 REQ_MINLEN, /* Message body length must be >= req_value. */
  85         } req_what;
  86         uint16_t req_value;
  87 };
  88
  89 extern const struct of_msgtypeinfo *of10_identify_msgtype(const uint8_t);
  90 extern const struct of_msgtypeinfo *of13_identify_msgtype(const uint8_t);