nexmon – Rev 1
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/*
* This module implements decoding of OpenFlow protocol version 1.0 (wire
* protocol 0x01). The decoder implements terse (default), detailed (-v) and
* full (-vv) output formats and, as much as each format implies, detects and
* tries to work around sizing anomalies inside the messages. The decoder marks
* up bogus values of selected message fields and decodes partially captured
* messages up to the snapshot end. It is based on the specification below:
*
* [OF10] http://www.openflow.org/documents/openflow-spec-v1.0.0.pdf
*
* Most functions in this file take 3 arguments into account:
* * cp -- the pointer to the first octet to decode
* * len -- the length of the current structure as declared on the wire
* * ep -- the pointer to the end of the captured frame
* They return either the pointer to the next not-yet-decoded part of the frame
* or the value of ep, which means the current frame processing is over as it
* has been fully decoded or is malformed or truncated. This way it is possible
* to chain and nest such functions uniformly to decode an OF1.0 message, which
* consists of several layers of nested structures.
*
* Decoding of Ethernet frames nested in OFPT_PACKET_IN and OFPT_PACKET_OUT
* messages is done only when the verbosity level set by command-line argument
* is "-vvv" or higher. In that case the verbosity level is temporarily
* decremented by 3 during the nested frame decoding. For example, running
* tcpdump with "-vvvv" will do full decoding of OpenFlow and "-v" decoding of
* the nested frames.
*
* Partial decoding of Big Switch Networks vendor extensions is done after the
* oftest (OpenFlow Testing Framework) and Loxigen (library generator) source
* code.
*
*
* Copyright (c) 2013 The TCPDUMP project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
#include "ether.h"
#include "ethertype.h"
#include "ipproto.h"
#include "oui.h"
#include "openflow.h"
static const char tstr[] = " [|openflow]";
static const char cstr[] = " (corrupt)";
#define OFPT_HELLO 0x00
#define OFPT_ERROR 0x01
#define OFPT_ECHO_REQUEST 0x02
#define OFPT_ECHO_REPLY 0x03
#define OFPT_VENDOR 0x04
#define OFPT_FEATURES_REQUEST 0x05
#define OFPT_FEATURES_REPLY 0x06
#define OFPT_GET_CONFIG_REQUEST 0x07
#define OFPT_GET_CONFIG_REPLY 0x08
#define OFPT_SET_CONFIG 0x09
#define OFPT_PACKET_IN 0x0a
#define OFPT_FLOW_REMOVED 0x0b
#define OFPT_PORT_STATUS 0x0c
#define OFPT_PACKET_OUT 0x0d
#define OFPT_FLOW_MOD 0x0e
#define OFPT_PORT_MOD 0x0f
#define OFPT_STATS_REQUEST 0x10
#define OFPT_STATS_REPLY 0x11
#define OFPT_BARRIER_REQUEST 0x12
#define OFPT_BARRIER_REPLY 0x13
#define OFPT_QUEUE_GET_CONFIG_REQUEST 0x14
#define OFPT_QUEUE_GET_CONFIG_REPLY 0x15
static const struct tok ofpt_str[] = {
{ OFPT_HELLO, "HELLO" },
{ OFPT_ERROR, "ERROR" },
{ OFPT_ECHO_REQUEST, "ECHO_REQUEST" },
{ OFPT_ECHO_REPLY, "ECHO_REPLY" },
{ OFPT_VENDOR, "VENDOR" },
{ OFPT_FEATURES_REQUEST, "FEATURES_REQUEST" },
{ OFPT_FEATURES_REPLY, "FEATURES_REPLY" },
{ OFPT_GET_CONFIG_REQUEST, "GET_CONFIG_REQUEST" },
{ OFPT_GET_CONFIG_REPLY, "GET_CONFIG_REPLY" },
{ OFPT_SET_CONFIG, "SET_CONFIG" },
{ OFPT_PACKET_IN, "PACKET_IN" },
{ OFPT_FLOW_REMOVED, "FLOW_REMOVED" },
{ OFPT_PORT_STATUS, "PORT_STATUS" },
{ OFPT_PACKET_OUT, "PACKET_OUT" },
{ OFPT_FLOW_MOD, "FLOW_MOD" },
{ OFPT_PORT_MOD, "PORT_MOD" },
{ OFPT_STATS_REQUEST, "STATS_REQUEST" },
{ OFPT_STATS_REPLY, "STATS_REPLY" },
{ OFPT_BARRIER_REQUEST, "BARRIER_REQUEST" },
{ OFPT_BARRIER_REPLY, "BARRIER_REPLY" },
{ OFPT_QUEUE_GET_CONFIG_REQUEST, "QUEUE_GET_CONFIG_REQUEST" },
{ OFPT_QUEUE_GET_CONFIG_REPLY, "QUEUE_GET_CONFIG_REPLY" },
{ 0, NULL }
};
#define OFPPC_PORT_DOWN (1 << 0)
#define OFPPC_NO_STP (1 << 1)
#define OFPPC_NO_RECV (1 << 2)
#define OFPPC_NO_RECV_STP (1 << 3)
#define OFPPC_NO_FLOOD (1 << 4)
#define OFPPC_NO_FWD (1 << 5)
#define OFPPC_NO_PACKET_IN (1 << 6)
static const struct tok ofppc_bm[] = {
{ OFPPC_PORT_DOWN, "PORT_DOWN" },
{ OFPPC_NO_STP, "NO_STP" },
{ OFPPC_NO_RECV, "NO_RECV" },
{ OFPPC_NO_RECV_STP, "NO_RECV_STP" },
{ OFPPC_NO_FLOOD, "NO_FLOOD" },
{ OFPPC_NO_FWD, "NO_FWD" },
{ OFPPC_NO_PACKET_IN, "NO_PACKET_IN" },
{ 0, NULL }
};
#define OFPPC_U (~(OFPPC_PORT_DOWN | OFPPC_NO_STP | OFPPC_NO_RECV | \
OFPPC_NO_RECV_STP | OFPPC_NO_FLOOD | OFPPC_NO_FWD | \
OFPPC_NO_PACKET_IN))
#define OFPPS_LINK_DOWN (1 << 0)
#define OFPPS_STP_LISTEN (0 << 8)
#define OFPPS_STP_LEARN (1 << 8)
#define OFPPS_STP_FORWARD (2 << 8)
#define OFPPS_STP_BLOCK (3 << 8)
#define OFPPS_STP_MASK (3 << 8)
static const struct tok ofpps_bm[] = {
{ OFPPS_LINK_DOWN, "LINK_DOWN" },
{ OFPPS_STP_LISTEN, "STP_LISTEN" },
{ OFPPS_STP_LEARN, "STP_LEARN" },
{ OFPPS_STP_FORWARD, "STP_FORWARD" },
{ OFPPS_STP_BLOCK, "STP_BLOCK" },
{ 0, NULL }
};
#define OFPPS_U (~(OFPPS_LINK_DOWN | OFPPS_STP_LISTEN | OFPPS_STP_LEARN | \
OFPPS_STP_FORWARD | OFPPS_STP_BLOCK))
#define OFPP_MAX 0xff00
#define OFPP_IN_PORT 0xfff8
#define OFPP_TABLE 0xfff9
#define OFPP_NORMAL 0xfffa
#define OFPP_FLOOD 0xfffb
#define OFPP_ALL 0xfffc
#define OFPP_CONTROLLER 0xfffd
#define OFPP_LOCAL 0xfffe
#define OFPP_NONE 0xffff
static const struct tok ofpp_str[] = {
{ OFPP_MAX, "MAX" },
{ OFPP_IN_PORT, "IN_PORT" },
{ OFPP_TABLE, "TABLE" },
{ OFPP_NORMAL, "NORMAL" },
{ OFPP_FLOOD, "FLOOD" },
{ OFPP_ALL, "ALL" },
{ OFPP_CONTROLLER, "CONTROLLER" },
{ OFPP_LOCAL, "LOCAL" },
{ OFPP_NONE, "NONE" },
{ 0, NULL }
};
#define OFPPF_10MB_HD (1 << 0)
#define OFPPF_10MB_FD (1 << 1)
#define OFPPF_100MB_HD (1 << 2)
#define OFPPF_100MB_FD (1 << 3)
#define OFPPF_1GB_HD (1 << 4)
#define OFPPF_1GB_FD (1 << 5)
#define OFPPF_10GB_FD (1 << 6)
#define OFPPF_COPPER (1 << 7)
#define OFPPF_FIBER (1 << 8)
#define OFPPF_AUTONEG (1 << 9)
#define OFPPF_PAUSE (1 << 10)
#define OFPPF_PAUSE_ASYM (1 << 11)
static const struct tok ofppf_bm[] = {
{ OFPPF_10MB_HD, "10MB_HD" },
{ OFPPF_10MB_FD, "10MB_FD" },
{ OFPPF_100MB_HD, "100MB_HD" },
{ OFPPF_100MB_FD, "100MB_FD" },
{ OFPPF_1GB_HD, "1GB_HD" },
{ OFPPF_1GB_FD, "1GB_FD" },
{ OFPPF_10GB_FD, "10GB_FD" },
{ OFPPF_COPPER, "COPPER" },
{ OFPPF_FIBER, "FIBER" },
{ OFPPF_AUTONEG, "AUTONEG" },
{ OFPPF_PAUSE, "PAUSE" },
{ OFPPF_PAUSE_ASYM, "PAUSE_ASYM" },
{ 0, NULL }
};
#define OFPPF_U (~(OFPPF_10MB_HD | OFPPF_10MB_FD | OFPPF_100MB_HD | \
OFPPF_100MB_FD | OFPPF_1GB_HD | OFPPF_1GB_FD | \
OFPPF_10GB_FD | OFPPF_COPPER | OFPPF_FIBER | \
OFPPF_AUTONEG | OFPPF_PAUSE | OFPPF_PAUSE_ASYM))
#define OFPQT_NONE 0x0000
#define OFPQT_MIN_RATE 0x0001
static const struct tok ofpqt_str[] = {
{ OFPQT_NONE, "NONE" },
{ OFPQT_MIN_RATE, "MIN_RATE" },
{ 0, NULL }
};
#define OFPFW_IN_PORT (1 << 0)
#define OFPFW_DL_VLAN (1 << 1)
#define OFPFW_DL_SRC (1 << 2)
#define OFPFW_DL_DST (1 << 3)
#define OFPFW_DL_TYPE (1 << 4)
#define OFPFW_NW_PROTO (1 << 5)
#define OFPFW_TP_SRC (1 << 6)
#define OFPFW_TP_DST (1 << 7)
#define OFPFW_NW_SRC_SHIFT 8
#define OFPFW_NW_SRC_BITS 6
#define OFPFW_NW_SRC_MASK (((1 << OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT)
#define OFPFW_NW_DST_SHIFT 14
#define OFPFW_NW_DST_BITS 6
#define OFPFW_NW_DST_MASK (((1 << OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT)
#define OFPFW_DL_VLAN_PCP (1 << 20)
#define OFPFW_NW_TOS (1 << 21)
#define OFPFW_ALL ((1 << 22) - 1)
static const struct tok ofpfw_bm[] = {
{ OFPFW_IN_PORT, "IN_PORT" },
{ OFPFW_DL_VLAN, "DL_VLAN" },
{ OFPFW_DL_SRC, "DL_SRC" },
{ OFPFW_DL_DST, "DL_DST" },
{ OFPFW_DL_TYPE, "DL_TYPE" },
{ OFPFW_NW_PROTO, "NW_PROTO" },
{ OFPFW_TP_SRC, "TP_SRC" },
{ OFPFW_TP_DST, "TP_DST" },
{ OFPFW_DL_VLAN_PCP, "DL_VLAN_PCP" },
{ OFPFW_NW_TOS, "NW_TOS" },
{ 0, NULL }
};
/* The above array does not include bits 8~13 (OFPFW_NW_SRC_*) and 14~19
* (OFPFW_NW_DST_*), which are not a part of the bitmap and require decoding
* other than that of tok2str(). The macro below includes these bits such that
* they are not reported as bogus in the decoding. */
#define OFPFW_U (~(OFPFW_ALL))
#define OFPAT_OUTPUT 0x0000
#define OFPAT_SET_VLAN_VID 0x0001
#define OFPAT_SET_VLAN_PCP 0x0002
#define OFPAT_STRIP_VLAN 0x0003
#define OFPAT_SET_DL_SRC 0x0004
#define OFPAT_SET_DL_DST 0x0005
#define OFPAT_SET_NW_SRC 0x0006
#define OFPAT_SET_NW_DST 0x0007
#define OFPAT_SET_NW_TOS 0x0008
#define OFPAT_SET_TP_SRC 0x0009
#define OFPAT_SET_TP_DST 0x000a
#define OFPAT_ENQUEUE 0x000b
#define OFPAT_VENDOR 0xffff
static const struct tok ofpat_str[] = {
{ OFPAT_OUTPUT, "OUTPUT" },
{ OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
{ OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
{ OFPAT_STRIP_VLAN, "STRIP_VLAN" },
{ OFPAT_SET_DL_SRC, "SET_DL_SRC" },
{ OFPAT_SET_DL_DST, "SET_DL_DST" },
{ OFPAT_SET_NW_SRC, "SET_NW_SRC" },
{ OFPAT_SET_NW_DST, "SET_NW_DST" },
{ OFPAT_SET_NW_TOS, "SET_NW_TOS" },
{ OFPAT_SET_TP_SRC, "SET_TP_SRC" },
{ OFPAT_SET_TP_DST, "SET_TP_DST" },
{ OFPAT_ENQUEUE, "ENQUEUE" },
{ OFPAT_VENDOR, "VENDOR" },
{ 0, NULL }
};
/* bit-shifted, w/o vendor action */
static const struct tok ofpat_bm[] = {
{ 1 << OFPAT_OUTPUT, "OUTPUT" },
{ 1 << OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
{ 1 << OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
{ 1 << OFPAT_STRIP_VLAN, "STRIP_VLAN" },
{ 1 << OFPAT_SET_DL_SRC, "SET_DL_SRC" },
{ 1 << OFPAT_SET_DL_DST, "SET_DL_DST" },
{ 1 << OFPAT_SET_NW_SRC, "SET_NW_SRC" },
{ 1 << OFPAT_SET_NW_DST, "SET_NW_DST" },
{ 1 << OFPAT_SET_NW_TOS, "SET_NW_TOS" },
{ 1 << OFPAT_SET_TP_SRC, "SET_TP_SRC" },
{ 1 << OFPAT_SET_TP_DST, "SET_TP_DST" },
{ 1 << OFPAT_ENQUEUE, "ENQUEUE" },
{ 0, NULL }
};
#define OFPAT_U (~(1 << OFPAT_OUTPUT | 1 << OFPAT_SET_VLAN_VID | \
1 << OFPAT_SET_VLAN_PCP | 1 << OFPAT_STRIP_VLAN | \
1 << OFPAT_SET_DL_SRC | 1 << OFPAT_SET_DL_DST | \
1 << OFPAT_SET_NW_SRC | 1 << OFPAT_SET_NW_DST | \
1 << OFPAT_SET_NW_TOS | 1 << OFPAT_SET_TP_SRC | \
1 << OFPAT_SET_TP_DST | 1 << OFPAT_ENQUEUE))
#define OFPC_FLOW_STATS (1 << 0)
#define OFPC_TABLE_STATS (1 << 1)
#define OFPC_PORT_STATS (1 << 2)
#define OFPC_STP (1 << 3)
#define OFPC_RESERVED (1 << 4)
#define OFPC_IP_REASM (1 << 5)
#define OFPC_QUEUE_STATS (1 << 6)
#define OFPC_ARP_MATCH_IP (1 << 7)
static const struct tok ofp_capabilities_bm[] = {
{ OFPC_FLOW_STATS, "FLOW_STATS" },
{ OFPC_TABLE_STATS, "TABLE_STATS" },
{ OFPC_PORT_STATS, "PORT_STATS" },
{ OFPC_STP, "STP" },
{ OFPC_RESERVED, "RESERVED" }, /* not in the mask below */
{ OFPC_IP_REASM, "IP_REASM" },
{ OFPC_QUEUE_STATS, "QUEUE_STATS" },
{ OFPC_ARP_MATCH_IP, "ARP_MATCH_IP" },
{ 0, NULL }
};
#define OFPCAP_U (~(OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
OFPC_STP | OFPC_IP_REASM | OFPC_QUEUE_STATS | \
OFPC_ARP_MATCH_IP))
#define OFPC_FRAG_NORMAL 0x0000
#define OFPC_FRAG_DROP 0x0001
#define OFPC_FRAG_REASM 0x0002
#define OFPC_FRAG_MASK 0x0003
static const struct tok ofp_config_str[] = {
{ OFPC_FRAG_NORMAL, "FRAG_NORMAL" },
{ OFPC_FRAG_DROP, "FRAG_DROP" },
{ OFPC_FRAG_REASM, "FRAG_REASM" },
{ 0, NULL }
};
#define OFPFC_ADD 0x0000
#define OFPFC_MODIFY 0x0001
#define OFPFC_MODIFY_STRICT 0x0002
#define OFPFC_DELETE 0x0003
#define OFPFC_DELETE_STRICT 0x0004
static const struct tok ofpfc_str[] = {
{ OFPFC_ADD, "ADD" },
{ OFPFC_MODIFY, "MODIFY" },
{ OFPFC_MODIFY_STRICT, "MODIFY_STRICT" },
{ OFPFC_DELETE, "DELETE" },
{ OFPFC_DELETE_STRICT, "DELETE_STRICT" },
{ 0, NULL }
};
static const struct tok bufferid_str[] = {
{ 0xffffffff, "NONE" },
{ 0, NULL }
};
#define OFPFF_SEND_FLOW_REM (1 << 0)
#define OFPFF_CHECK_OVERLAP (1 << 1)
#define OFPFF_EMERG (1 << 2)
static const struct tok ofpff_bm[] = {
{ OFPFF_SEND_FLOW_REM, "SEND_FLOW_REM" },
{ OFPFF_CHECK_OVERLAP, "CHECK_OVERLAP" },
{ OFPFF_EMERG, "EMERG" },
{ 0, NULL }
};
#define OFPFF_U (~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG))
#define OFPST_DESC 0x0000
#define OFPST_FLOW 0x0001
#define OFPST_AGGREGATE 0x0002
#define OFPST_TABLE 0x0003
#define OFPST_PORT 0x0004
#define OFPST_QUEUE 0x0005
#define OFPST_VENDOR 0xffff
static const struct tok ofpst_str[] = {
{ OFPST_DESC, "DESC" },
{ OFPST_FLOW, "FLOW" },
{ OFPST_AGGREGATE, "AGGREGATE" },
{ OFPST_TABLE, "TABLE" },
{ OFPST_PORT, "PORT" },
{ OFPST_QUEUE, "QUEUE" },
{ OFPST_VENDOR, "VENDOR" },
{ 0, NULL }
};
static const struct tok tableid_str[] = {
{ 0xfe, "EMERG" },
{ 0xff, "ALL" },
{ 0, NULL }
};
#define OFPQ_ALL 0xffffffff
static const struct tok ofpq_str[] = {
{ OFPQ_ALL, "ALL" },
{ 0, NULL }
};
#define OFPSF_REPLY_MORE 0x0001
static const struct tok ofpsf_reply_bm[] = {
{ OFPSF_REPLY_MORE, "MORE" },
{ 0, NULL }
};
#define OFPSF_REPLY_U (~(OFPSF_REPLY_MORE))
#define OFPR_NO_MATCH 0x00
#define OFPR_ACTION 0x01
static const struct tok ofpr_str[] = {
{ OFPR_NO_MATCH, "NO_MATCH" },
{ OFPR_ACTION, "ACTION" },
{ 0, NULL }
};
#define OFPRR_IDLE_TIMEOUT 0x00
#define OFPRR_HARD_TIMEOUT 0x01
#define OFPRR_DELETE 0x02
static const struct tok ofprr_str[] = {
{ OFPRR_IDLE_TIMEOUT, "IDLE_TIMEOUT" },
{ OFPRR_HARD_TIMEOUT, "HARD_TIMEOUT" },
{ OFPRR_DELETE, "DELETE" },
{ 0, NULL }
};
#define OFPPR_ADD 0x00
#define OFPPR_DELETE 0x01
#define OFPPR_MODIFY 0x02
static const struct tok ofppr_str[] = {
{ OFPPR_ADD, "ADD" },
{ OFPPR_DELETE, "DELETE" },
{ OFPPR_MODIFY, "MODIFY" },
{ 0, NULL }
};
#define OFPET_HELLO_FAILED 0x0000
#define OFPET_BAD_REQUEST 0x0001
#define OFPET_BAD_ACTION 0x0002
#define OFPET_FLOW_MOD_FAILED 0x0003
#define OFPET_PORT_MOD_FAILED 0x0004
#define OFPET_QUEUE_OP_FAILED 0x0005
static const struct tok ofpet_str[] = {
{ OFPET_HELLO_FAILED, "HELLO_FAILED" },
{ OFPET_BAD_REQUEST, "BAD_REQUEST" },
{ OFPET_BAD_ACTION, "BAD_ACTION" },
{ OFPET_FLOW_MOD_FAILED, "FLOW_MOD_FAILED" },
{ OFPET_PORT_MOD_FAILED, "PORT_MOD_FAILED" },
{ OFPET_QUEUE_OP_FAILED, "QUEUE_OP_FAILED" },
{ 0, NULL }
};
#define OFPHFC_INCOMPATIBLE 0x0000
#define OFPHFC_EPERM 0x0001
static const struct tok ofphfc_str[] = {
{ OFPHFC_INCOMPATIBLE, "INCOMPATIBLE" },
{ OFPHFC_EPERM, "EPERM" },
{ 0, NULL }
};
#define OFPBRC_BAD_VERSION 0x0000
#define OFPBRC_BAD_TYPE 0x0001
#define OFPBRC_BAD_STAT 0x0002
#define OFPBRC_BAD_VENDOR 0x0003
#define OFPBRC_BAD_SUBTYPE 0x0004
#define OFPBRC_EPERM 0x0005
#define OFPBRC_BAD_LEN 0x0006
#define OFPBRC_BUFFER_EMPTY 0x0007
#define OFPBRC_BUFFER_UNKNOWN 0x0008
static const struct tok ofpbrc_str[] = {
{ OFPBRC_BAD_VERSION, "BAD_VERSION" },
{ OFPBRC_BAD_TYPE, "BAD_TYPE" },
{ OFPBRC_BAD_STAT, "BAD_STAT" },
{ OFPBRC_BAD_VENDOR, "BAD_VENDOR" },
{ OFPBRC_BAD_SUBTYPE, "BAD_SUBTYPE" },
{ OFPBRC_EPERM, "EPERM" },
{ OFPBRC_BAD_LEN, "BAD_LEN" },
{ OFPBRC_BUFFER_EMPTY, "BUFFER_EMPTY" },
{ OFPBRC_BUFFER_UNKNOWN, "BUFFER_UNKNOWN" },
{ 0, NULL }
};
#define OFPBAC_BAD_TYPE 0x0000
#define OFPBAC_BAD_LEN 0x0001
#define OFPBAC_BAD_VENDOR 0x0002
#define OFPBAC_BAD_VENDOR_TYPE 0x0003
#define OFPBAC_BAD_OUT_PORT 0x0004
#define OFPBAC_BAD_ARGUMENT 0x0005
#define OFPBAC_EPERM 0x0006
#define OFPBAC_TOO_MANY 0x0007
#define OFPBAC_BAD_QUEUE 0x0008
static const struct tok ofpbac_str[] = {
{ OFPBAC_BAD_TYPE, "BAD_TYPE" },
{ OFPBAC_BAD_LEN, "BAD_LEN" },
{ OFPBAC_BAD_VENDOR, "BAD_VENDOR" },
{ OFPBAC_BAD_VENDOR_TYPE, "BAD_VENDOR_TYPE" },
{ OFPBAC_BAD_OUT_PORT, "BAD_OUT_PORT" },
{ OFPBAC_BAD_ARGUMENT, "BAD_ARGUMENT" },
{ OFPBAC_EPERM, "EPERM" },
{ OFPBAC_TOO_MANY, "TOO_MANY" },
{ OFPBAC_BAD_QUEUE, "BAD_QUEUE" },
{ 0, NULL }
};
#define OFPFMFC_ALL_TABLES_FULL 0x0000
#define OFPFMFC_OVERLAP 0x0001
#define OFPFMFC_EPERM 0x0002
#define OFPFMFC_BAD_EMERG_TIMEOUT 0x0003
#define OFPFMFC_BAD_COMMAND 0x0004
#define OFPFMFC_UNSUPPORTED 0x0005
static const struct tok ofpfmfc_str[] = {
{ OFPFMFC_ALL_TABLES_FULL, "ALL_TABLES_FULL" },
{ OFPFMFC_OVERLAP, "OVERLAP" },
{ OFPFMFC_EPERM, "EPERM" },
{ OFPFMFC_BAD_EMERG_TIMEOUT, "BAD_EMERG_TIMEOUT" },
{ OFPFMFC_BAD_COMMAND, "BAD_COMMAND" },
{ OFPFMFC_UNSUPPORTED, "UNSUPPORTED" },
{ 0, NULL }
};
#define OFPPMFC_BAD_PORT 0x0000
#define OFPPMFC_BAD_HW_ADDR 0x0001
static const struct tok ofppmfc_str[] = {
{ OFPPMFC_BAD_PORT, "BAD_PORT" },
{ OFPPMFC_BAD_HW_ADDR, "BAD_HW_ADDR" },
{ 0, NULL }
};
#define OFPQOFC_BAD_PORT 0x0000
#define OFPQOFC_BAD_QUEUE 0x0001
#define OFPQOFC_EPERM 0x0002
static const struct tok ofpqofc_str[] = {
{ OFPQOFC_BAD_PORT, "BAD_PORT" },
{ OFPQOFC_BAD_QUEUE, "BAD_QUEUE" },
{ OFPQOFC_EPERM, "EPERM" },
{ 0, NULL }
};
static const struct tok empty_str[] = {
{ 0, NULL }
};
/* lengths (fixed or minimal) of particular protocol structures */
#define OF_SWITCH_CONFIG_LEN 12
#define OF_PHY_PORT_LEN 48
#define OF_SWITCH_FEATURES_LEN 32
#define OF_PORT_STATUS_LEN 64
#define OF_PORT_MOD_LEN 32
#define OF_PACKET_IN_LEN 20
#define OF_ACTION_OUTPUT_LEN 8
#define OF_ACTION_VLAN_VID_LEN 8
#define OF_ACTION_VLAN_PCP_LEN 8
#define OF_ACTION_DL_ADDR_LEN 16
#define OF_ACTION_NW_ADDR_LEN 8
#define OF_ACTION_TP_PORT_LEN 8
#define OF_ACTION_NW_TOS_LEN 8
#define OF_ACTION_VENDOR_HEADER_LEN 8
#define OF_ACTION_HEADER_LEN 8
#define OF_PACKET_OUT_LEN 16
#define OF_MATCH_LEN 40
#define OF_FLOW_MOD_LEN 72
#define OF_FLOW_REMOVED_LEN 88
#define OF_ERROR_MSG_LEN 12
#define OF_STATS_REQUEST_LEN 12
#define OF_STATS_REPLY_LEN 12
#define OF_DESC_STATS_LEN 1056
#define OF_FLOW_STATS_REQUEST_LEN 44
#define OF_FLOW_STATS_LEN 88
#define OF_AGGREGATE_STATS_REQUEST_LEN 44
#define OF_AGGREGATE_STATS_REPLY_LEN 24
#define OF_TABLE_STATS_LEN 64
#define OF_PORT_STATS_REQUEST_LEN 8
#define OF_PORT_STATS_LEN 104
#define OF_VENDOR_HEADER_LEN 12
#define OF_QUEUE_PROP_HEADER_LEN 8
#define OF_QUEUE_PROP_MIN_RATE_LEN 16
#define OF_PACKET_QUEUE_LEN 8
#define OF_QUEUE_GET_CONFIG_REQUEST_LEN 12
#define OF_QUEUE_GET_CONFIG_REPLY_LEN 16
#define OF_ACTION_ENQUEUE_LEN 16
#define OF_QUEUE_STATS_REQUEST_LEN 8
#define OF_QUEUE_STATS_LEN 32
/* miscellaneous constants from [OF10] */
#define OFP_MAX_TABLE_NAME_LEN 32
#define OFP_MAX_PORT_NAME_LEN 16
#define DESC_STR_LEN 256
#define SERIAL_NUM_LEN 32
#define OFP_VLAN_NONE 0xffff
/* vendor extensions */
#define BSN_SET_IP_MASK 0
#define BSN_GET_IP_MASK_REQUEST 1
#define BSN_GET_IP_MASK_REPLY 2
#define BSN_SET_MIRRORING 3
#define BSN_GET_MIRRORING_REQUEST 4
#define BSN_GET_MIRRORING_REPLY 5
#define BSN_SHELL_COMMAND 6
#define BSN_SHELL_OUTPUT 7
#define BSN_SHELL_STATUS 8
#define BSN_GET_INTERFACES_REQUEST 9
#define BSN_GET_INTERFACES_REPLY 10
#define BSN_SET_PKTIN_SUPPRESSION_REQUEST 11
#define BSN_SET_L2_TABLE_REQUEST 12
#define BSN_GET_L2_TABLE_REQUEST 13
#define BSN_GET_L2_TABLE_REPLY 14
#define BSN_VIRTUAL_PORT_CREATE_REQUEST 15
#define BSN_VIRTUAL_PORT_CREATE_REPLY 16
#define BSN_VIRTUAL_PORT_REMOVE_REQUEST 17
#define BSN_BW_ENABLE_SET_REQUEST 18
#define BSN_BW_ENABLE_GET_REQUEST 19
#define BSN_BW_ENABLE_GET_REPLY 20
#define BSN_BW_CLEAR_DATA_REQUEST 21
#define BSN_BW_CLEAR_DATA_REPLY 22
#define BSN_BW_ENABLE_SET_REPLY 23
#define BSN_SET_L2_TABLE_REPLY 24
#define BSN_SET_PKTIN_SUPPRESSION_REPLY 25
#define BSN_VIRTUAL_PORT_REMOVE_REPLY 26
#define BSN_HYBRID_GET_REQUEST 27
#define BSN_HYBRID_GET_REPLY 28
/* 29 */
/* 30 */
#define BSN_PDU_TX_REQUEST 31
#define BSN_PDU_TX_REPLY 32
#define BSN_PDU_RX_REQUEST 33
#define BSN_PDU_RX_REPLY 34
#define BSN_PDU_RX_TIMEOUT 35
static const struct tok bsn_subtype_str[] = {
{ BSN_SET_IP_MASK, "SET_IP_MASK" },
{ BSN_GET_IP_MASK_REQUEST, "GET_IP_MASK_REQUEST" },
{ BSN_GET_IP_MASK_REPLY, "GET_IP_MASK_REPLY" },
{ BSN_SET_MIRRORING, "SET_MIRRORING" },
{ BSN_GET_MIRRORING_REQUEST, "GET_MIRRORING_REQUEST" },
{ BSN_GET_MIRRORING_REPLY, "GET_MIRRORING_REPLY" },
{ BSN_SHELL_COMMAND, "SHELL_COMMAND" },
{ BSN_SHELL_OUTPUT, "SHELL_OUTPUT" },
{ BSN_SHELL_STATUS, "SHELL_STATUS" },
{ BSN_GET_INTERFACES_REQUEST, "GET_INTERFACES_REQUEST" },
{ BSN_GET_INTERFACES_REPLY, "GET_INTERFACES_REPLY" },
{ BSN_SET_PKTIN_SUPPRESSION_REQUEST, "SET_PKTIN_SUPPRESSION_REQUEST" },
{ BSN_SET_L2_TABLE_REQUEST, "SET_L2_TABLE_REQUEST" },
{ BSN_GET_L2_TABLE_REQUEST, "GET_L2_TABLE_REQUEST" },
{ BSN_GET_L2_TABLE_REPLY, "GET_L2_TABLE_REPLY" },
{ BSN_VIRTUAL_PORT_CREATE_REQUEST, "VIRTUAL_PORT_CREATE_REQUEST" },
{ BSN_VIRTUAL_PORT_CREATE_REPLY, "VIRTUAL_PORT_CREATE_REPLY" },
{ BSN_VIRTUAL_PORT_REMOVE_REQUEST, "VIRTUAL_PORT_REMOVE_REQUEST" },
{ BSN_BW_ENABLE_SET_REQUEST, "BW_ENABLE_SET_REQUEST" },
{ BSN_BW_ENABLE_GET_REQUEST, "BW_ENABLE_GET_REQUEST" },
{ BSN_BW_ENABLE_GET_REPLY, "BW_ENABLE_GET_REPLY" },
{ BSN_BW_CLEAR_DATA_REQUEST, "BW_CLEAR_DATA_REQUEST" },
{ BSN_BW_CLEAR_DATA_REPLY, "BW_CLEAR_DATA_REPLY" },
{ BSN_BW_ENABLE_SET_REPLY, "BW_ENABLE_SET_REPLY" },
{ BSN_SET_L2_TABLE_REPLY, "SET_L2_TABLE_REPLY" },
{ BSN_SET_PKTIN_SUPPRESSION_REPLY, "SET_PKTIN_SUPPRESSION_REPLY" },
{ BSN_VIRTUAL_PORT_REMOVE_REPLY, "VIRTUAL_PORT_REMOVE_REPLY" },
{ BSN_HYBRID_GET_REQUEST, "HYBRID_GET_REQUEST" },
{ BSN_HYBRID_GET_REPLY, "HYBRID_GET_REPLY" },
{ BSN_PDU_TX_REQUEST, "PDU_TX_REQUEST" },
{ BSN_PDU_TX_REPLY, "PDU_TX_REPLY" },
{ BSN_PDU_RX_REQUEST, "PDU_RX_REQUEST" },
{ BSN_PDU_RX_REPLY, "PDU_RX_REPLY" },
{ BSN_PDU_RX_TIMEOUT, "PDU_RX_TIMEOUT" },
{ 0, NULL }
};
#define BSN_ACTION_MIRROR 1
#define BSN_ACTION_SET_TUNNEL_DST 2
/* 3 */
#define BSN_ACTION_CHECKSUM 4
static const struct tok bsn_action_subtype_str[] = {
{ BSN_ACTION_MIRROR, "MIRROR" },
{ BSN_ACTION_SET_TUNNEL_DST, "SET_TUNNEL_DST" },
{ BSN_ACTION_CHECKSUM, "CHECKSUM" },
{ 0, NULL }
};
static const struct tok bsn_mirror_copy_stage_str[] = {
{ 0, "INGRESS" },
{ 1, "EGRESS" },
{ 0, NULL },
};
static const struct tok bsn_onoff_str[] = {
{ 0, "OFF" },
{ 1, "ON" },
{ 0, NULL },
};
static const char *
vlan_str(const uint16_t vid)
{
static char buf[sizeof("65535 (bogus)")];
const char *fmt;
if (vid == OFP_VLAN_NONE)
return "NONE";
fmt = (vid > 0 && vid < 0x0fff) ? "%u" : "%u (bogus)";
snprintf(buf, sizeof(buf), fmt, vid);
return buf;
}
static const char *
pcp_str(const uint8_t pcp)
{
static char buf[sizeof("255 (bogus)")];
snprintf(buf, sizeof(buf), pcp <= 7 ? "%u" : "%u (bogus)", pcp);
return buf;
}
static void
of10_bitmap_print(netdissect_options *ndo,
const struct tok *t, const uint32_t v, const uint32_t u)
{
const char *sep = " (";
if (v == 0)
return;
/* assigned bits */
for (; t->s != NULL; t++)
if (v & t->v) {
ND_PRINT((ndo, "%s%s", sep, t->s));
sep = ", ";
}
/* unassigned bits? */
ND_PRINT((ndo, v & u ? ") (bogus)" : ")"));
}
static const u_char *
of10_data_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
if (len == 0)
return cp;
/* data */
ND_PRINT((ndo, "\n\t data (%u octets)", len));
ND_TCHECK2(*cp, len);
if (ndo->ndo_vflag >= 2)
hex_and_ascii_print(ndo, "\n\t ", cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
static const u_char *
of10_bsn_message_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
const u_char *cp0 = cp;
uint32_t subtype;
if (len < 4)
goto corrupt;
/* subtype */
ND_TCHECK2(*cp, 4);
subtype = EXTRACT_32BITS(cp);
cp += 4;
ND_PRINT((ndo, "\n\t subtype %s", tok2str(bsn_subtype_str, "unknown (0x%08x)", subtype)));
switch (subtype) {
case BSN_GET_IP_MASK_REQUEST:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | index | pad |
* +---------------+---------------+---------------+---------------+
* | pad |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 12)
goto corrupt;
/* index */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", index %u", *cp));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 7);
cp += 7;
break;
case BSN_SET_IP_MASK:
case BSN_GET_IP_MASK_REPLY:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | index | pad |
* +---------------+---------------+---------------+---------------+
* | mask |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 12)
goto corrupt;
/* index */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", index %u", *cp));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
/* mask */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", mask %s", ipaddr_string(ndo, cp)));
cp += 4;
break;
case BSN_SET_MIRRORING:
case BSN_GET_MIRRORING_REQUEST:
case BSN_GET_MIRRORING_REPLY:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | report m. p. | pad |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 8)
goto corrupt;
/* report_mirror_ports */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", report_mirror_ports %s", tok2str(bsn_onoff_str, "bogus (%u)", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
break;
case BSN_GET_INTERFACES_REQUEST:
case BSN_GET_L2_TABLE_REQUEST:
case BSN_BW_ENABLE_GET_REQUEST:
case BSN_BW_CLEAR_DATA_REQUEST:
case BSN_HYBRID_GET_REQUEST:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 4)
goto corrupt;
break;
case BSN_VIRTUAL_PORT_REMOVE_REQUEST:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | vport_no |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 8)
goto corrupt;
/* vport_no */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", vport_no %u", EXTRACT_32BITS(cp)));
cp += 4;
break;
case BSN_SHELL_COMMAND:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | service |
* +---------------+---------------+---------------+---------------+
* | data ...
* +---------------+---------------+--------
*
*/
if (len < 8)
goto corrupt;
/* service */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", service %u", EXTRACT_32BITS(cp)));
cp += 4;
/* data */
ND_PRINT((ndo, ", data '"));
if (fn_printn(ndo, cp, len - 8, ep)) {
ND_PRINT((ndo, "'"));
goto trunc;
}
ND_PRINT((ndo, "'"));
cp += len - 8;
break;
case BSN_SHELL_OUTPUT:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | data ...
* +---------------+---------------+--------
*
*/
/* already checked that len >= 4 */
/* data */
ND_PRINT((ndo, ", data '"));
if (fn_printn(ndo, cp, len - 4, ep)) {
ND_PRINT((ndo, "'"));
goto trunc;
}
ND_PRINT((ndo, "'"));
cp += len - 4;
break;
case BSN_SHELL_STATUS:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | status |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 8)
goto corrupt;
/* status */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", status 0x%08x", EXTRACT_32BITS(cp)));
cp += 4;
break;
default:
ND_TCHECK2(*cp, len - 4);
cp += len - 4;
}
return cp;
corrupt: /* skip the undersized data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len);
return cp0 + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
static const u_char *
of10_bsn_actions_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
const u_char *cp0 = cp;
uint32_t subtype, vlan_tag;
if (len < 4)
goto corrupt;
/* subtype */
ND_TCHECK2(*cp, 4);
subtype = EXTRACT_32BITS(cp);
cp += 4;
ND_PRINT((ndo, "\n\t subtype %s", tok2str(bsn_action_subtype_str, "unknown (0x%08x)", subtype)));
switch (subtype) {
case BSN_ACTION_MIRROR:
/*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +---------------+---------------+---------------+---------------+
* | subtype |
* +---------------+---------------+---------------+---------------+
* | dest_port |
* +---------------+---------------+---------------+---------------+
* | vlan_tag |
* +---------------+---------------+---------------+---------------+
* | copy_stage | pad |
* +---------------+---------------+---------------+---------------+
*
*/
if (len != 16)
goto corrupt;
/* dest_port */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", dest_port %u", EXTRACT_32BITS(cp)));
cp += 4;
/* vlan_tag */
ND_TCHECK2(*cp, 4);
vlan_tag = EXTRACT_32BITS(cp);
cp += 4;
switch (vlan_tag >> 16) {
case 0:
ND_PRINT((ndo, ", vlan_tag none"));
break;
case ETHERTYPE_8021Q:
ND_PRINT((ndo, ", vlan_tag 802.1Q (%s)", ieee8021q_tci_string(vlan_tag & 0xffff)));
break;
default:
ND_PRINT((ndo, ", vlan_tag unknown (0x%04x)", vlan_tag >> 16));
}
/* copy_stage */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", copy_stage %s", tok2str(bsn_mirror_copy_stage_str, "unknown (%u)", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
break;
default:
ND_TCHECK2(*cp, len - 4);
cp += len - 4;
}
return cp;
corrupt:
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len);
return cp0 + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
static const u_char *
of10_vendor_action_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
uint32_t vendor;
const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, const u_int);
if (len < 4)
goto corrupt;
/* vendor */
ND_TCHECK2(*cp, 4);
vendor = EXTRACT_32BITS(cp);
cp += 4;
ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
/* data */
decoder =
vendor == OUI_BSN ? of10_bsn_actions_print :
of10_data_print;
return decoder(ndo, cp, ep, len - 4);
corrupt: /* skip the undersized data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
static const u_char *
of10_vendor_message_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
uint32_t vendor;
const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, u_int);
if (len < 4)
goto corrupt;
/* vendor */
ND_TCHECK2(*cp, 4);
vendor = EXTRACT_32BITS(cp);
cp += 4;
ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
/* data */
decoder =
vendor == OUI_BSN ? of10_bsn_message_print :
of10_data_print;
return decoder(ndo, cp, ep, len - 4);
corrupt: /* skip the undersized data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* Vendor ID is mandatory, data is optional. */
static const u_char *
of10_vendor_data_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
uint32_t vendor;
if (len < 4)
goto corrupt;
/* vendor */
ND_TCHECK2(*cp, 4);
vendor = EXTRACT_32BITS(cp);
cp += 4;
ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
/* data */
return of10_data_print(ndo, cp, ep, len - 4);
corrupt: /* skip the undersized data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
static const u_char *
of10_packet_data_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
if (len == 0)
return cp;
/* data */
ND_PRINT((ndo, "\n\t data (%u octets)", len));
if (ndo->ndo_vflag < 3)
return cp + len;
ND_TCHECK2(*cp, len);
ndo->ndo_vflag -= 3;
ND_PRINT((ndo, ", frame decoding below\n"));
ether_print(ndo, cp, len, ndo->ndo_snapend - cp, NULL, NULL);
ndo->ndo_vflag += 3;
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.2.1 */
static const u_char *
of10_phy_ports_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
while (len) {
if (len < OF_PHY_PORT_LEN)
goto corrupt;
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* hw_addr */
ND_TCHECK2(*cp, ETHER_ADDR_LEN);
ND_PRINT((ndo, ", hw_addr %s", etheraddr_string(ndo, cp)));
cp += ETHER_ADDR_LEN;
/* name */
ND_TCHECK2(*cp, OFP_MAX_PORT_NAME_LEN);
ND_PRINT((ndo, ", name '"));
fn_print(ndo, cp, cp + OFP_MAX_PORT_NAME_LEN);
ND_PRINT((ndo, "'"));
cp += OFP_MAX_PORT_NAME_LEN;
if (ndo->ndo_vflag < 2) {
ND_TCHECK2(*cp, 24);
cp += 24;
goto next_port;
}
/* config */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t config 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
cp += 4;
/* state */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t state 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofpps_bm, EXTRACT_32BITS(cp), OFPPS_U);
cp += 4;
/* curr */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t curr 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
cp += 4;
/* advertised */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t advertised 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
cp += 4;
/* supported */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t supported 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
cp += 4;
/* peer */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t peer 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
cp += 4;
next_port:
len -= OF_PHY_PORT_LEN;
} /* while */
return cp;
corrupt: /* skip the undersized trailing data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.2.2 */
static const u_char *
of10_queue_props_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t property, plen, rate;
while (len) {
u_char plen_bogus = 0, skip = 0;
if (len < OF_QUEUE_PROP_HEADER_LEN)
goto corrupt;
/* property */
ND_TCHECK2(*cp, 2);
property = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, "\n\t property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property)));
/* len */
ND_TCHECK2(*cp, 2);
plen = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, ", len %u", plen));
if (plen < OF_QUEUE_PROP_HEADER_LEN || plen > len)
goto corrupt;
/* pad */
ND_TCHECK2(*cp, 4);
cp += 4;
/* property-specific constraints and decoding */
switch (property) {
case OFPQT_NONE:
plen_bogus = plen != OF_QUEUE_PROP_HEADER_LEN;
break;
case OFPQT_MIN_RATE:
plen_bogus = plen != OF_QUEUE_PROP_MIN_RATE_LEN;
break;
default:
skip = 1;
}
if (plen_bogus) {
ND_PRINT((ndo, " (bogus)"));
skip = 1;
}
if (skip) {
ND_TCHECK2(*cp, plen - 4);
cp += plen - 4;
goto next_property;
}
if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */
/* rate */
ND_TCHECK2(*cp, 2);
rate = EXTRACT_16BITS(cp);
cp += 2;
if (rate > 1000)
ND_PRINT((ndo, ", rate disabled"));
else
ND_PRINT((ndo, ", rate %u.%u%%", rate / 10, rate % 10));
/* pad */
ND_TCHECK2(*cp, 6);
cp += 6;
}
next_property:
len -= plen;
} /* while */
return cp;
corrupt: /* skip the rest of queue properties */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_queues_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t desclen;
while (len) {
if (len < OF_PACKET_QUEUE_LEN)
goto corrupt;
/* queue_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t queue_id %u", EXTRACT_32BITS(cp)));
cp += 4;
/* len */
ND_TCHECK2(*cp, 2);
desclen = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, ", len %u", desclen));
if (desclen < OF_PACKET_QUEUE_LEN || desclen > len)
goto corrupt;
/* pad */
ND_TCHECK2(*cp, 2);
cp += 2;
/* properties */
if (ndo->ndo_vflag < 2) {
ND_TCHECK2(*cp, desclen - OF_PACKET_QUEUE_LEN);
cp += desclen - OF_PACKET_QUEUE_LEN;
goto next_queue;
}
if (ep == (cp = of10_queue_props_print(ndo, cp, ep, desclen - OF_PACKET_QUEUE_LEN)))
return ep; /* end of snapshot */
next_queue:
len -= desclen;
} /* while */
return cp;
corrupt: /* skip the rest of queues */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.2.3 */
static const u_char *
of10_match_print(netdissect_options *ndo,
const char *pfx, const u_char *cp, const u_char *ep)
{
uint32_t wildcards;
uint16_t dl_type;
uint8_t nw_proto;
u_char nw_bits;
const char *field_name;
/* wildcards */
ND_TCHECK2(*cp, 4);
wildcards = EXTRACT_32BITS(cp);
if (wildcards & OFPFW_U)
ND_PRINT((ndo, "%swildcards 0x%08x (bogus)", pfx, wildcards));
cp += 4;
/* in_port */
ND_TCHECK2(*cp, 2);
if (! (wildcards & OFPFW_IN_PORT))
ND_PRINT((ndo, "%smatch in_port %s", pfx, tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* dl_src */
ND_TCHECK2(*cp, ETHER_ADDR_LEN);
if (! (wildcards & OFPFW_DL_SRC))
ND_PRINT((ndo, "%smatch dl_src %s", pfx, etheraddr_string(ndo, cp)));
cp += ETHER_ADDR_LEN;
/* dl_dst */
ND_TCHECK2(*cp, ETHER_ADDR_LEN);
if (! (wildcards & OFPFW_DL_DST))
ND_PRINT((ndo, "%smatch dl_dst %s", pfx, etheraddr_string(ndo, cp)));
cp += ETHER_ADDR_LEN;
/* dl_vlan */
ND_TCHECK2(*cp, 2);
if (! (wildcards & OFPFW_DL_VLAN))
ND_PRINT((ndo, "%smatch dl_vlan %s", pfx, vlan_str(EXTRACT_16BITS(cp))));
cp += 2;
/* dl_vlan_pcp */
ND_TCHECK2(*cp, 1);
if (! (wildcards & OFPFW_DL_VLAN_PCP))
ND_PRINT((ndo, "%smatch dl_vlan_pcp %s", pfx, pcp_str(*cp)));
cp += 1;
/* pad1 */
ND_TCHECK2(*cp, 1);
cp += 1;
/* dl_type */
ND_TCHECK2(*cp, 2);
dl_type = EXTRACT_16BITS(cp);
cp += 2;
if (! (wildcards & OFPFW_DL_TYPE))
ND_PRINT((ndo, "%smatch dl_type 0x%04x", pfx, dl_type));
/* nw_tos */
ND_TCHECK2(*cp, 1);
if (! (wildcards & OFPFW_NW_TOS))
ND_PRINT((ndo, "%smatch nw_tos 0x%02x", pfx, *cp));
cp += 1;
/* nw_proto */
ND_TCHECK2(*cp, 1);
nw_proto = *cp;
cp += 1;
if (! (wildcards & OFPFW_NW_PROTO)) {
field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_ARP
? "arp_opcode" : "nw_proto";
ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, nw_proto));
}
/* pad2 */
ND_TCHECK2(*cp, 2);
cp += 2;
/* nw_src */
ND_TCHECK2(*cp, 4);
nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT;
if (nw_bits < 32)
ND_PRINT((ndo, "%smatch nw_src %s/%u", pfx, ipaddr_string(ndo, cp), 32 - nw_bits));
cp += 4;
/* nw_dst */
ND_TCHECK2(*cp, 4);
nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT;
if (nw_bits < 32)
ND_PRINT((ndo, "%smatch nw_dst %s/%u", pfx, ipaddr_string(ndo, cp), 32 - nw_bits));
cp += 4;
/* tp_src */
ND_TCHECK2(*cp, 2);
if (! (wildcards & OFPFW_TP_SRC)) {
field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
&& ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
? "icmp_type" : "tp_src";
ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)));
}
cp += 2;
/* tp_dst */
ND_TCHECK2(*cp, 2);
if (! (wildcards & OFPFW_TP_DST)) {
field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
&& ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
? "icmp_code" : "tp_dst";
ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)));
}
return cp + 2;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.2.4 */
static const u_char *
of10_actions_print(netdissect_options *ndo,
const char *pfx, const u_char *cp, const u_char *ep,
u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t type, alen, output_port;
while (len) {
u_char alen_bogus = 0, skip = 0;
if (len < OF_ACTION_HEADER_LEN)
goto corrupt;
/* type */
ND_TCHECK2(*cp, 2);
type = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, "%saction type %s", pfx, tok2str(ofpat_str, "invalid (0x%04x)", type)));
/* length */
ND_TCHECK2(*cp, 2);
alen = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, ", len %u", alen));
/* On action size underrun/overrun skip the rest of the action list. */
if (alen < OF_ACTION_HEADER_LEN || alen > len)
goto corrupt;
/* On action size inappropriate for the given type or invalid type just skip
* the current action, as the basic length constraint has been met. */
switch (type) {
case OFPAT_OUTPUT:
case OFPAT_SET_VLAN_VID:
case OFPAT_SET_VLAN_PCP:
case OFPAT_STRIP_VLAN:
case OFPAT_SET_NW_SRC:
case OFPAT_SET_NW_DST:
case OFPAT_SET_NW_TOS:
case OFPAT_SET_TP_SRC:
case OFPAT_SET_TP_DST:
alen_bogus = alen != 8;
break;
case OFPAT_SET_DL_SRC:
case OFPAT_SET_DL_DST:
case OFPAT_ENQUEUE:
alen_bogus = alen != 16;
break;
case OFPAT_VENDOR:
alen_bogus = alen % 8 != 0; /* already >= 8 so far */
break;
default:
skip = 1;
}
if (alen_bogus) {
ND_PRINT((ndo, " (bogus)"));
skip = 1;
}
if (skip) {
ND_TCHECK2(*cp, alen - 4);
cp += alen - 4;
goto next_action;
}
/* OK to decode the rest of the action structure */
switch (type) {
case OFPAT_OUTPUT:
/* port */
ND_TCHECK2(*cp, 2);
output_port = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, ", port %s", tok2str(ofpp_str, "%u", output_port)));
/* max_len */
ND_TCHECK2(*cp, 2);
if (output_port == OFPP_CONTROLLER)
ND_PRINT((ndo, ", max_len %u", EXTRACT_16BITS(cp)));
cp += 2;
break;
case OFPAT_SET_VLAN_VID:
/* vlan_vid */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", vlan_vid %s", vlan_str(EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 2);
cp += 2;
break;
case OFPAT_SET_VLAN_PCP:
/* vlan_pcp */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", vlan_pcp %s", pcp_str(*cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
break;
case OFPAT_SET_DL_SRC:
case OFPAT_SET_DL_DST:
/* dl_addr */
ND_TCHECK2(*cp, ETHER_ADDR_LEN);
ND_PRINT((ndo, ", dl_addr %s", etheraddr_string(ndo, cp)));
cp += ETHER_ADDR_LEN;
/* pad */
ND_TCHECK2(*cp, 6);
cp += 6;
break;
case OFPAT_SET_NW_SRC:
case OFPAT_SET_NW_DST:
/* nw_addr */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", nw_addr %s", ipaddr_string(ndo, cp)));
cp += 4;
break;
case OFPAT_SET_NW_TOS:
/* nw_tos */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", nw_tos 0x%02x", *cp));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
break;
case OFPAT_SET_TP_SRC:
case OFPAT_SET_TP_DST:
/* nw_tos */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", tp_port %u", EXTRACT_16BITS(cp)));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 2);
cp += 2;
break;
case OFPAT_ENQUEUE:
/* port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 6);
cp += 6;
/* queue_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))));
cp += 4;
break;
case OFPAT_VENDOR:
if (ep == (cp = of10_vendor_action_print(ndo, cp, ep, alen - 4)))
return ep; /* end of snapshot */
break;
case OFPAT_STRIP_VLAN:
/* pad */
ND_TCHECK2(*cp, 4);
cp += 4;
break;
} /* switch */
next_action:
len -= alen;
} /* while */
return cp;
corrupt: /* skip the rest of actions */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.3.1 */
static const u_char *
of10_features_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
/* datapath_id */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, "\n\t dpid 0x%016" PRIx64, EXTRACT_64BITS(cp)));
cp += 8;
/* n_buffers */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", n_buffers %u", EXTRACT_32BITS(cp)));
cp += 4;
/* n_tables */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", n_tables %u", *cp));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
/* capabilities */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t capabilities 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofp_capabilities_bm, EXTRACT_32BITS(cp), OFPCAP_U);
cp += 4;
/* actions */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t actions 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofpat_bm, EXTRACT_32BITS(cp), OFPAT_U);
cp += 4;
/* ports */
return of10_phy_ports_print(ndo, cp, ep, len - OF_SWITCH_FEATURES_LEN);
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.3.3 */
static const u_char *
of10_flow_mod_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
uint16_t command;
/* match */
if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
return ep; /* end of snapshot */
/* cookie */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, "\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
cp += 8;
/* command */
ND_TCHECK2(*cp, 2);
command = EXTRACT_16BITS(cp);
ND_PRINT((ndo, ", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command)));
cp += 2;
/* idle_timeout */
ND_TCHECK2(*cp, 2);
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
cp += 2;
/* hard_timeout */
ND_TCHECK2(*cp, 2);
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, ", hard_timeout %u", EXTRACT_16BITS(cp)));
cp += 2;
/* priority */
ND_TCHECK2(*cp, 2);
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
cp += 2;
/* buffer_id */
ND_TCHECK2(*cp, 4);
if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
command == OFPFC_MODIFY_STRICT)
ND_PRINT((ndo, ", buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))));
cp += 4;
/* out_port */
ND_TCHECK2(*cp, 2);
if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT)
ND_PRINT((ndo, ", out_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* flags */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
of10_bitmap_print(ndo, ofpff_bm, EXTRACT_16BITS(cp), OFPFF_U);
cp += 2;
/* actions */
return of10_actions_print(ndo, "\n\t ", cp, ep, len - OF_FLOW_MOD_LEN);
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_port_mod_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep)
{
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* hw_addr */
ND_TCHECK2(*cp, ETHER_ADDR_LEN);
ND_PRINT((ndo, ", hw_addr %s", etheraddr_string(ndo, cp)));
cp += ETHER_ADDR_LEN;
/* config */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t config 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
cp += 4;
/* mask */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t mask 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
cp += 4;
/* advertise */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t advertise 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
cp += 4;
/* pad */
ND_TCHECK2(*cp, 4);
return cp + 4;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.3.5 */
static const u_char *
of10_stats_request_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t type;
/* type */
ND_TCHECK2(*cp, 2);
type = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, "\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)));
/* flags */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, " (bogus)"));
cp += 2;
/* type-specific body of one of fixed lengths */
len -= OF_STATS_REQUEST_LEN;
switch(type) {
case OFPST_DESC:
case OFPST_TABLE:
if (len)
goto corrupt;
return cp;
case OFPST_FLOW:
case OFPST_AGGREGATE:
if (len != OF_FLOW_STATS_REQUEST_LEN)
goto corrupt;
/* match */
if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
return ep; /* end of snapshot */
/* table_id */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, "\n\t table_id %s", tok2str(tableid_str, "%u", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 1);
cp += 1;
/* out_port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", out_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
return cp + 2;
case OFPST_PORT:
if (len != OF_PORT_STATS_REQUEST_LEN)
goto corrupt;
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 6);
return cp + 6;
case OFPST_QUEUE:
if (len != OF_QUEUE_STATS_REQUEST_LEN)
goto corrupt;
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 2);
cp += 2;
/* queue_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))));
return cp + 4;
case OFPST_VENDOR:
return of10_vendor_data_print(ndo, cp, ep, len);
}
return cp;
corrupt: /* skip the message body */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_desc_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
if (len != OF_DESC_STATS_LEN)
goto corrupt;
/* mfr_desc */
ND_TCHECK2(*cp, DESC_STR_LEN);
ND_PRINT((ndo, "\n\t mfr_desc '"));
fn_print(ndo, cp, cp + DESC_STR_LEN);
ND_PRINT((ndo, "'"));
cp += DESC_STR_LEN;
/* hw_desc */
ND_TCHECK2(*cp, DESC_STR_LEN);
ND_PRINT((ndo, "\n\t hw_desc '"));
fn_print(ndo, cp, cp + DESC_STR_LEN);
ND_PRINT((ndo, "'"));
cp += DESC_STR_LEN;
/* sw_desc */
ND_TCHECK2(*cp, DESC_STR_LEN);
ND_PRINT((ndo, "\n\t sw_desc '"));
fn_print(ndo, cp, cp + DESC_STR_LEN);
ND_PRINT((ndo, "'"));
cp += DESC_STR_LEN;
/* serial_num */
ND_TCHECK2(*cp, SERIAL_NUM_LEN);
ND_PRINT((ndo, "\n\t serial_num '"));
fn_print(ndo, cp, cp + SERIAL_NUM_LEN);
ND_PRINT((ndo, "'"));
cp += SERIAL_NUM_LEN;
/* dp_desc */
ND_TCHECK2(*cp, DESC_STR_LEN);
ND_PRINT((ndo, "\n\t dp_desc '"));
fn_print(ndo, cp, cp + DESC_STR_LEN);
ND_PRINT((ndo, "'"));
return cp + DESC_STR_LEN;
corrupt: /* skip the message body */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_flow_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t entry_len;
while (len) {
if (len < OF_FLOW_STATS_LEN)
goto corrupt;
/* length */
ND_TCHECK2(*cp, 2);
entry_len = EXTRACT_16BITS(cp);
ND_PRINT((ndo, "\n\t length %u", entry_len));
if (entry_len < OF_FLOW_STATS_LEN || entry_len > len)
goto corrupt;
cp += 2;
/* table_id */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", table_id %s", tok2str(tableid_str, "%u", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 1);
cp += 1;
/* match */
if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
return ep; /* end of snapshot */
/* duration_sec */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t duration_sec %u", EXTRACT_32BITS(cp)));
cp += 4;
/* duration_nsec */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", duration_nsec %u", EXTRACT_32BITS(cp)));
cp += 4;
/* priority */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
cp += 2;
/* idle_timeout */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
cp += 2;
/* hard_timeout */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", hard_timeout %u", EXTRACT_16BITS(cp)));
cp += 2;
/* pad2 */
ND_TCHECK2(*cp, 6);
cp += 6;
/* cookie */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
cp += 8;
/* packet_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", packet_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* byte_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* actions */
if (ep == (cp = of10_actions_print(ndo, "\n\t ", cp, ep, entry_len - OF_FLOW_STATS_LEN)))
return ep; /* end of snapshot */
len -= entry_len;
} /* while */
return cp;
corrupt: /* skip the rest of flow statistics entries */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_aggregate_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep,
const u_int len)
{
if (len != OF_AGGREGATE_STATS_REPLY_LEN)
goto corrupt;
/* packet_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, "\n\t packet_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* byte_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* flow_count */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", flow_count %u", EXTRACT_32BITS(cp)));
cp += 4;
/* pad */
ND_TCHECK2(*cp, 4);
return cp + 4;
corrupt: /* skip the message body */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp, len);
return cp + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_table_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
while (len) {
if (len < OF_TABLE_STATS_LEN)
goto corrupt;
/* table_id */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, "\n\t table_id %s", tok2str(tableid_str, "%u", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 3);
cp += 3;
/* name */
ND_TCHECK2(*cp, OFP_MAX_TABLE_NAME_LEN);
ND_PRINT((ndo, ", name '"));
fn_print(ndo, cp, cp + OFP_MAX_TABLE_NAME_LEN);
ND_PRINT((ndo, "'"));
cp += OFP_MAX_TABLE_NAME_LEN;
/* wildcards */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t wildcards 0x%08x", EXTRACT_32BITS(cp)));
of10_bitmap_print(ndo, ofpfw_bm, EXTRACT_32BITS(cp), OFPFW_U);
cp += 4;
/* max_entries */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t max_entries %u", EXTRACT_32BITS(cp)));
cp += 4;
/* active_count */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", active_count %u", EXTRACT_32BITS(cp)));
cp += 4;
/* lookup_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", lookup_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* matched_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", matched_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
len -= OF_TABLE_STATS_LEN;
} /* while */
return cp;
corrupt: /* skip the undersized trailing data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_port_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
while (len) {
if (len < OF_PORT_STATS_LEN)
goto corrupt;
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
if (ndo->ndo_vflag < 2) {
ND_TCHECK2(*cp, OF_PORT_STATS_LEN - 2);
cp += OF_PORT_STATS_LEN - 2;
goto next_port;
}
/* pad */
ND_TCHECK2(*cp, 6);
cp += 6;
/* rx_packets */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_packets %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_packets */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_packets %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_bytes */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_bytes */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_dropped */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_dropped %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_dropped */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_dropped %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_errors */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_errors %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_errors */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_errors %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_frame_err */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_frame_err %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_over_err */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_over_err %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* rx_crc_err */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", rx_crc_err %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* collisions */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", collisions %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
next_port:
len -= OF_PORT_STATS_LEN;
} /* while */
return cp;
corrupt: /* skip the undersized trailing data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_queue_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
while (len) {
if (len < OF_QUEUE_STATS_LEN)
goto corrupt;
/* port_no */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 2);
cp += 2;
/* queue_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", queue_id %u", EXTRACT_32BITS(cp)));
cp += 4;
/* tx_bytes */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_packets */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_packets %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* tx_errors */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", tx_errors %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
len -= OF_QUEUE_STATS_LEN;
} /* while */
return cp;
corrupt: /* skip the undersized trailing data */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* ibid */
static const u_char *
of10_stats_reply_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
const u_char *cp0 = cp;
uint16_t type;
/* type */
ND_TCHECK2(*cp, 2);
type = EXTRACT_16BITS(cp);
ND_PRINT((ndo, "\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)));
cp += 2;
/* flags */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
of10_bitmap_print(ndo, ofpsf_reply_bm, EXTRACT_16BITS(cp), OFPSF_REPLY_U);
cp += 2;
if (ndo->ndo_vflag > 0) {
const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, u_int) =
type == OFPST_DESC ? of10_desc_stats_reply_print :
type == OFPST_FLOW ? of10_flow_stats_reply_print :
type == OFPST_AGGREGATE ? of10_aggregate_stats_reply_print :
type == OFPST_TABLE ? of10_table_stats_reply_print :
type == OFPST_PORT ? of10_port_stats_reply_print :
type == OFPST_QUEUE ? of10_queue_stats_reply_print :
type == OFPST_VENDOR ? of10_vendor_data_print :
NULL;
if (decoder != NULL)
return decoder(ndo, cp, ep, len - OF_STATS_REPLY_LEN);
}
ND_TCHECK2(*cp0, len);
return cp0 + len;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.3.6 */
static const u_char *
of10_packet_out_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
const u_char *cp0 = cp;
const u_int len0 = len;
uint16_t actions_len;
/* buffer_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t buffer_id 0x%08x", EXTRACT_32BITS(cp)));
cp += 4;
/* in_port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* actions_len */
ND_TCHECK2(*cp, 2);
actions_len = EXTRACT_16BITS(cp);
cp += 2;
if (actions_len > len - OF_PACKET_OUT_LEN)
goto corrupt;
/* actions */
if (ep == (cp = of10_actions_print(ndo, "\n\t ", cp, ep, actions_len)))
return ep; /* end of snapshot */
/* data */
return of10_packet_data_print(ndo, cp, ep, len - OF_PACKET_OUT_LEN - actions_len);
corrupt: /* skip the rest of the message body */
ND_PRINT((ndo, "%s", cstr));
ND_TCHECK2(*cp0, len0);
return cp0 + len0;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.4.1 */
static const u_char *
of10_packet_in_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
/* buffer_id */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, "\n\t buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))));
cp += 4;
/* total_len */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", total_len %u", EXTRACT_16BITS(cp)));
cp += 2;
/* in_port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* reason */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", reason %s", tok2str(ofpr_str, "invalid (0x%02x)", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 1);
cp += 1;
/* data */
/* 2 mock octets count in OF_PACKET_IN_LEN but not in len */
return of10_packet_data_print(ndo, cp, ep, len - (OF_PACKET_IN_LEN - 2));
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.4.2 */
static const u_char *
of10_flow_removed_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep)
{
/* match */
if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
return ep; /* end of snapshot */
/* cookie */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, "\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
cp += 8;
/* priority */
ND_TCHECK2(*cp, 2);
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
cp += 2;
/* reason */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, ", reason %s", tok2str(ofprr_str, "unknown (0x%02x)", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 1);
cp += 1;
/* duration_sec */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", duration_sec %u", EXTRACT_32BITS(cp)));
cp += 4;
/* duration_nsec */
ND_TCHECK2(*cp, 4);
ND_PRINT((ndo, ", duration_nsec %u", EXTRACT_32BITS(cp)));
cp += 4;
/* idle_timeout */
ND_TCHECK2(*cp, 2);
if (EXTRACT_16BITS(cp))
ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
cp += 2;
/* pad2 */
ND_TCHECK2(*cp, 2);
cp += 2;
/* packet_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", packet_count %" PRIu64, EXTRACT_64BITS(cp)));
cp += 8;
/* byte_count */
ND_TCHECK2(*cp, 8);
ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
return cp + 8;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
/* [OF10] Section 5.4.4 */
static const u_char *
of10_error_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const u_int len)
{
uint16_t type;
const struct tok *code_str;
/* type */
ND_TCHECK2(*cp, 2);
type = EXTRACT_16BITS(cp);
cp += 2;
ND_PRINT((ndo, "\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type)));
/* code */
ND_TCHECK2(*cp, 2);
code_str =
type == OFPET_HELLO_FAILED ? ofphfc_str :
type == OFPET_BAD_REQUEST ? ofpbrc_str :
type == OFPET_BAD_ACTION ? ofpbac_str :
type == OFPET_FLOW_MOD_FAILED ? ofpfmfc_str :
type == OFPET_PORT_MOD_FAILED ? ofppmfc_str :
type == OFPET_QUEUE_OP_FAILED ? ofpqofc_str :
empty_str;
ND_PRINT((ndo, ", code %s", tok2str(code_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))));
cp += 2;
/* data */
return of10_data_print(ndo, cp, ep, len - OF_ERROR_MSG_LEN);
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}
const u_char *
of10_header_body_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep, const uint8_t type,
const uint16_t len, const uint32_t xid)
{
const u_char *cp0 = cp;
const u_int len0 = len;
/* Thus far message length is not less than the basic header size, but most
* message types have additional assorted constraints on the length. Wherever
* possible, check that message length meets the constraint, in remaining
* cases check that the length is OK to begin decoding and leave any final
* verification up to a lower-layer function. When the current message is
* corrupt, proceed to the next message. */
/* [OF10] Section 5.1 */
ND_PRINT((ndo, "\n\tversion 1.0, type %s, length %u, xid 0x%08x",
tok2str(ofpt_str, "invalid (0x%02x)", type), len, xid));
switch (type) {
/* OpenFlow header only. */
case OFPT_FEATURES_REQUEST: /* [OF10] Section 5.3.1 */
case OFPT_GET_CONFIG_REQUEST: /* [OF10] Section 5.3.2 */
case OFPT_BARRIER_REQUEST: /* [OF10] Section 5.3.7 */
case OFPT_BARRIER_REPLY: /* ibid */
if (len != OF_HEADER_LEN)
goto corrupt;
break;
/* OpenFlow header and fixed-size message body. */
case OFPT_SET_CONFIG: /* [OF10] Section 5.3.2 */
case OFPT_GET_CONFIG_REPLY: /* ibid */
if (len != OF_SWITCH_CONFIG_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
/* flags */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t flags %s", tok2str(ofp_config_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))));
cp += 2;
/* miss_send_len */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, ", miss_send_len %u", EXTRACT_16BITS(cp)));
return cp + 2;
case OFPT_PORT_MOD:
if (len != OF_PORT_MOD_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_port_mod_print(ndo, cp, ep);
case OFPT_QUEUE_GET_CONFIG_REQUEST: /* [OF10] Section 5.3.4 */
if (len != OF_QUEUE_GET_CONFIG_REQUEST_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
/* port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 2);
return cp + 2;
case OFPT_FLOW_REMOVED:
if (len != OF_FLOW_REMOVED_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_flow_removed_print(ndo, cp, ep);
case OFPT_PORT_STATUS: /* [OF10] Section 5.4.3 */
if (len != OF_PORT_STATUS_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
/* reason */
ND_TCHECK2(*cp, 1);
ND_PRINT((ndo, "\n\t reason %s", tok2str(ofppr_str, "invalid (0x%02x)", *cp)));
cp += 1;
/* pad */
ND_TCHECK2(*cp, 7);
cp += 7;
/* desc */
return of10_phy_ports_print(ndo, cp, ep, OF_PHY_PORT_LEN);
/* OpenFlow header, fixed-size message body and n * fixed-size data units. */
case OFPT_FEATURES_REPLY:
if (len < OF_SWITCH_FEATURES_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_features_reply_print(ndo, cp, ep, len);
/* OpenFlow header and variable-size data. */
case OFPT_HELLO: /* [OF10] Section 5.5.1 */
case OFPT_ECHO_REQUEST: /* [OF10] Section 5.5.2 */
case OFPT_ECHO_REPLY: /* [OF10] Section 5.5.3 */
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_data_print(ndo, cp, ep, len - OF_HEADER_LEN);
/* OpenFlow header, fixed-size message body and variable-size data. */
case OFPT_ERROR:
if (len < OF_ERROR_MSG_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_error_print(ndo, cp, ep, len);
case OFPT_VENDOR:
/* [OF10] Section 5.5.4 */
if (len < OF_VENDOR_HEADER_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_vendor_message_print(ndo, cp, ep, len - OF_HEADER_LEN);
case OFPT_PACKET_IN:
/* 2 mock octets count in OF_PACKET_IN_LEN but not in len */
if (len < OF_PACKET_IN_LEN - 2)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_packet_in_print(ndo, cp, ep, len);
/* a. OpenFlow header. */
/* b. OpenFlow header and one of the fixed-size message bodies. */
/* c. OpenFlow header, fixed-size message body and variable-size data. */
case OFPT_STATS_REQUEST:
if (len < OF_STATS_REQUEST_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_stats_request_print(ndo, cp, ep, len);
/* a. OpenFlow header and fixed-size message body. */
/* b. OpenFlow header and n * fixed-size data units. */
/* c. OpenFlow header and n * variable-size data units. */
/* d. OpenFlow header, fixed-size message body and variable-size data. */
case OFPT_STATS_REPLY:
if (len < OF_STATS_REPLY_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_stats_reply_print(ndo, cp, ep, len);
/* OpenFlow header and n * variable-size data units and variable-size data. */
case OFPT_PACKET_OUT:
if (len < OF_PACKET_OUT_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_packet_out_print(ndo, cp, ep, len);
/* OpenFlow header, fixed-size message body and n * variable-size data units. */
case OFPT_FLOW_MOD:
if (len < OF_FLOW_MOD_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
return of10_flow_mod_print(ndo, cp, ep, len);
/* OpenFlow header, fixed-size message body and n * variable-size data units. */
case OFPT_QUEUE_GET_CONFIG_REPLY: /* [OF10] Section 5.3.4 */
if (len < OF_QUEUE_GET_CONFIG_REPLY_LEN)
goto corrupt;
if (ndo->ndo_vflag < 1)
goto next_message;
/* port */
ND_TCHECK2(*cp, 2);
ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
cp += 2;
/* pad */
ND_TCHECK2(*cp, 6);
cp += 6;
/* queues */
return of10_queues_print(ndo, cp, ep, len - OF_QUEUE_GET_CONFIG_REPLY_LEN);
} /* switch (type) */
goto next_message;
corrupt: /* skip the message body */
ND_PRINT((ndo, "%s", cstr));
next_message:
ND_TCHECK2(*cp0, len0 - OF_HEADER_LEN);
return cp0 + len0 - OF_HEADER_LEN;
trunc:
ND_PRINT((ndo, "%s", tstr));
return ep;
}