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tcpdump/print-openflow-1.0.c
Denis Ovsienko beddcbb4ea OpenFlow: Refine more length checks. 
In print-openflow-1.0.c and print-openflow-1.3.c replace the remaining
"goto invalid" checks with ND_ICHECK_U() and ND_ICHECKMSG_U().  Redo the
changes from commit 1ce16ea: use the same order of arguments and the
same comparison operators as before the change and lose the unsigned
compensation, which is no longer required.  Add another test case using
a malformed packet from Francois-Xavier.
2022-01-05 22:57:45 +00:00

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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] https://www.opennetworking.org/wp-content/uploads/2013/04/openflow-spec-v1.0.0.pdf
*
* Most functions in this file take the following arguments:
* * cp -- the pointer to the first octet to decode
* * len -- the declared length of the structure to decode
* The convention is that a printer function returns iff the given structure is
* completely within the packet buffer; otherwise it processes the part that is
* within the buffer, sooner of later takes the "truncated packet" shortcut via
* longjmp() and never returns. With that in mind, the function may return
* without printing the structure completely if it is invalid or the ndo_vflag
* value is not high enough. This way the calling function can try to decode
* the next data item.
*
* 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.
*/
/* \summary: OpenFlow protocol version 1.0 printer */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "extract.h"
#include "addrtoname.h"
#include "ethertype.h"
#include "ipproto.h"
#include "oui.h"
#include "openflow.h"
#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
#define OFPT_MAX OFPT_QUEUE_GET_CONFIG_REPLY
#define OFPPC_PORT_DOWN (1U <<0)
#define OFPPC_NO_STP (1U <<1)
#define OFPPC_NO_RECV (1U <<2)
#define OFPPC_NO_RECV_STP (1U <<3)
#define OFPPC_NO_FLOOD (1U <<4)
#define OFPPC_NO_FWD (1U <<5)
#define OFPPC_NO_PACKET_IN (1U <<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))
/*
* [OF10] lists all FPPS_ constants in one enum, but they mean a 1-bit bitmap
* in the least significant octet and a 2-bit code point in the next octet.
* Remember to mix or to separate these two parts as the context requires.
*/
#define OFPPS_LINK_DOWN (1U << 0) /* bitmap */
#define OFPPS_STP_LISTEN (0U << 8) /* code point */
#define OFPPS_STP_LEARN (1U << 8) /* code point */
#define OFPPS_STP_FORWARD (2U << 8) /* code point */
#define OFPPS_STP_BLOCK (3U << 8) /* code point */
#define OFPPS_STP_MASK (3U << 8) /* code point bitmask */
static const struct tok ofpps_stp_str[] = {
{ 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 0xff00U
#define OFPP_IN_PORT 0xfff8U
#define OFPP_TABLE 0xfff9U
#define OFPP_NORMAL 0xfffaU
#define OFPP_FLOOD 0xfffbU
#define OFPP_ALL 0xfffcU
#define OFPP_CONTROLLER 0xfffdU
#define OFPP_LOCAL 0xfffeU
#define OFPP_NONE 0xffffU
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 (1U << 0)
#define OFPPF_10MB_FD (1U << 1)
#define OFPPF_100MB_HD (1U << 2)
#define OFPPF_100MB_FD (1U << 3)
#define OFPPF_1GB_HD (1U << 4)
#define OFPPF_1GB_FD (1U << 5)
#define OFPPF_10GB_FD (1U << 6)
#define OFPPF_COPPER (1U << 7)
#define OFPPF_FIBER (1U << 8)
#define OFPPF_AUTONEG (1U << 9)
#define OFPPF_PAUSE (1U <<10)
#define OFPPF_PAUSE_ASYM (1U <<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 (1U <<0)
#define OFPFW_DL_VLAN (1U <<1)
#define OFPFW_DL_SRC (1U <<2)
#define OFPFW_DL_DST (1U <<3)
#define OFPFW_DL_TYPE (1U <<4)
#define OFPFW_NW_PROTO (1U <<5)
#define OFPFW_TP_SRC (1U <<6)
#define OFPFW_TP_DST (1U <<7)
#define OFPFW_NW_SRC_SHIFT 8
#define OFPFW_NW_SRC_BITS 6
#define OFPFW_NW_SRC_MASK (((1U <<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 (((1U <<OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT)
#define OFPFW_DL_VLAN_PCP (1U <<20)
#define OFPFW_NW_TOS (1U <<21)
#define OFPFW_ALL ((1U <<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 0x0000U
#define OFPAT_SET_VLAN_VID 0x0001U
#define OFPAT_SET_VLAN_PCP 0x0002U
#define OFPAT_STRIP_VLAN 0x0003U
#define OFPAT_SET_DL_SRC 0x0004U
#define OFPAT_SET_DL_DST 0x0005U
#define OFPAT_SET_NW_SRC 0x0006U
#define OFPAT_SET_NW_DST 0x0007U
#define OFPAT_SET_NW_TOS 0x0008U
#define OFPAT_SET_TP_SRC 0x0009U
#define OFPAT_SET_TP_DST 0x000aU
#define OFPAT_ENQUEUE 0x000bU
#define OFPAT_VENDOR 0xffffU
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[] = {
{ 1U <<OFPAT_OUTPUT, "OUTPUT" },
{ 1U <<OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
{ 1U <<OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
{ 1U <<OFPAT_STRIP_VLAN, "STRIP_VLAN" },
{ 1U <<OFPAT_SET_DL_SRC, "SET_DL_SRC" },
{ 1U <<OFPAT_SET_DL_DST, "SET_DL_DST" },
{ 1U <<OFPAT_SET_NW_SRC, "SET_NW_SRC" },
{ 1U <<OFPAT_SET_NW_DST, "SET_NW_DST" },
{ 1U <<OFPAT_SET_NW_TOS, "SET_NW_TOS" },
{ 1U <<OFPAT_SET_TP_SRC, "SET_TP_SRC" },
{ 1U <<OFPAT_SET_TP_DST, "SET_TP_DST" },
{ 1U <<OFPAT_ENQUEUE, "ENQUEUE" },
{ 0, NULL }
};
#define OFPAT_U (~(1U <<OFPAT_OUTPUT | 1U <<OFPAT_SET_VLAN_VID | \
1U <<OFPAT_SET_VLAN_PCP | 1U <<OFPAT_STRIP_VLAN | \
1U <<OFPAT_SET_DL_SRC | 1U <<OFPAT_SET_DL_DST | \
1U <<OFPAT_SET_NW_SRC | 1U <<OFPAT_SET_NW_DST | \
1U <<OFPAT_SET_NW_TOS | 1U <<OFPAT_SET_TP_SRC | \
1U <<OFPAT_SET_TP_DST | 1U <<OFPAT_ENQUEUE))
#define OFPC_FLOW_STATS (1U <<0)
#define OFPC_TABLE_STATS (1U <<1)
#define OFPC_PORT_STATS (1U <<2)
#define OFPC_STP (1U <<3)
#define OFPC_RESERVED (1U <<4)
#define OFPC_IP_REASM (1U <<5)
#define OFPC_QUEUE_STATS (1U <<6)
#define OFPC_ARP_MATCH_IP (1U <<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 0x0000U
#define OFPC_FRAG_DROP 0x0001U
#define OFPC_FRAG_REASM 0x0002U
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 0x0000U
#define OFPFC_MODIFY 0x0001U
#define OFPFC_MODIFY_STRICT 0x0002U
#define OFPFC_DELETE 0x0003U
#define OFPFC_DELETE_STRICT 0x0004U
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 (1U <<0)
#define OFPFF_CHECK_OVERLAP (1U <<1)
#define OFPFF_EMERG (1U <<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 0x0000U
#define OFPST_FLOW 0x0001U
#define OFPST_AGGREGATE 0x0002U
#define OFPST_TABLE 0x0003U
#define OFPST_PORT 0x0004U
#define OFPST_QUEUE 0x0005U
#define OFPST_VENDOR 0xffffU
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[] = {
{ 0xfeU, "EMERG" },
{ 0xffU, "ALL" },
{ 0, NULL }
};
#define OFPQ_ALL 0xffffffffU
static const struct tok ofpq_str[] = {
{ OFPQ_ALL, "ALL" },
{ 0, NULL }
};
#define OFPSF_REPLY_MORE 0x0001U
static const struct tok ofpsf_reply_bm[] = {
{ OFPSF_REPLY_MORE, "MORE" },
{ 0, NULL }
};
#define OFPSF_REPLY_U (~(OFPSF_REPLY_MORE))
#define OFPR_NO_MATCH 0x00U
#define OFPR_ACTION 0x01U
static const struct tok ofpr_str[] = {
{ OFPR_NO_MATCH, "NO_MATCH" },
{ OFPR_ACTION, "ACTION" },
{ 0, NULL }
};
#define OFPRR_IDLE_TIMEOUT 0x00U
#define OFPRR_HARD_TIMEOUT 0x01U
#define OFPRR_DELETE 0x02U
static const struct tok ofprr_str[] = {
{ OFPRR_IDLE_TIMEOUT, "IDLE_TIMEOUT" },
{ OFPRR_HARD_TIMEOUT, "HARD_TIMEOUT" },
{ OFPRR_DELETE, "DELETE" },
{ 0, NULL }
};
#define OFPPR_ADD 0x00U
#define OFPPR_DELETE 0x01U
#define OFPPR_MODIFY 0x02U
static const struct tok ofppr_str[] = {
{ OFPPR_ADD, "ADD" },
{ OFPPR_DELETE, "DELETE" },
{ OFPPR_MODIFY, "MODIFY" },
{ 0, NULL }
};
#define OFPET_HELLO_FAILED 0x0000U
#define OFPET_BAD_REQUEST 0x0001U
#define OFPET_BAD_ACTION 0x0002U
#define OFPET_FLOW_MOD_FAILED 0x0003U
#define OFPET_PORT_MOD_FAILED 0x0004U
#define OFPET_QUEUE_OP_FAILED 0x0005U
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 0x0000U
#define OFPHFC_EPERM 0x0001U
static const struct tok ofphfc_str[] = {
{ OFPHFC_INCOMPATIBLE, "INCOMPATIBLE" },
{ OFPHFC_EPERM, "EPERM" },
{ 0, NULL }
};
#define OFPBRC_BAD_VERSION 0x0000U
#define OFPBRC_BAD_TYPE 0x0001U
#define OFPBRC_BAD_STAT 0x0002U
#define OFPBRC_BAD_VENDOR 0x0003U
#define OFPBRC_BAD_SUBTYPE 0x0004U
#define OFPBRC_EPERM 0x0005U
#define OFPBRC_BAD_LEN 0x0006U
#define OFPBRC_BUFFER_EMPTY 0x0007U
#define OFPBRC_BUFFER_UNKNOWN 0x0008U
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 0x0000U
#define OFPBAC_BAD_LEN 0x0001U
#define OFPBAC_BAD_VENDOR 0x0002U
#define OFPBAC_BAD_VENDOR_TYPE 0x0003U
#define OFPBAC_BAD_OUT_PORT 0x0004U
#define OFPBAC_BAD_ARGUMENT 0x0005U
#define OFPBAC_EPERM 0x0006U
#define OFPBAC_TOO_MANY 0x0007U
#define OFPBAC_BAD_QUEUE 0x0008U
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 0x0000U
#define OFPFMFC_OVERLAP 0x0001U
#define OFPFMFC_EPERM 0x0002U
#define OFPFMFC_BAD_EMERG_TIMEOUT 0x0003U
#define OFPFMFC_BAD_COMMAND 0x0004U
#define OFPFMFC_UNSUPPORTED 0x0005U
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 0x0000U
#define OFPPMFC_BAD_HW_ADDR 0x0001U
static const struct tok ofppmfc_str[] = {
{ OFPPMFC_BAD_PORT, "BAD_PORT" },
{ OFPPMFC_BAD_HW_ADDR, "BAD_HW_ADDR" },
{ 0, NULL }
};
#define OFPQOFC_BAD_PORT 0x0000U
#define OFPQOFC_BAD_QUEUE 0x0001U
#define OFPQOFC_EPERM 0x0002U
static const struct tok ofpqofc_str[] = {
{ OFPQOFC_BAD_PORT, "BAD_PORT" },
{ OFPQOFC_BAD_QUEUE, "BAD_QUEUE" },
{ OFPQOFC_EPERM, "EPERM" },
{ 0, NULL }
};
static const struct uint_tokary of10_ofpet2tokary[] = {
{ OFPET_HELLO_FAILED, ofphfc_str },
{ OFPET_BAD_REQUEST, ofpbrc_str },
{ OFPET_BAD_ACTION, ofpbac_str },
{ OFPET_FLOW_MOD_FAILED, ofpfmfc_str },
{ OFPET_PORT_MOD_FAILED, ofppmfc_str },
{ OFPET_QUEUE_OP_FAILED, ofpqofc_str },
/* uint2tokary() does not use array termination. */
};
/* lengths (fixed or minimal) of particular message types, where not 0 */
#define OF_SWITCH_CONFIG_FIXLEN (12U - OF_HEADER_FIXLEN)
#define OF_FEATURES_REPLY_MINLEN (32U - OF_HEADER_FIXLEN)
#define OF_PORT_STATUS_FIXLEN (64U - OF_HEADER_FIXLEN)
#define OF_PORT_MOD_FIXLEN (32U - OF_HEADER_FIXLEN)
#define OF_PACKET_IN_MINLEN (20U - OF_HEADER_FIXLEN) /* with 2 mock octets */
#define OF_PACKET_OUT_MINLEN (16U - OF_HEADER_FIXLEN)
#define OF_FLOW_MOD_MINLEN (72U - OF_HEADER_FIXLEN)
#define OF_FLOW_REMOVED_FIXLEN (88U - OF_HEADER_FIXLEN)
#define OF_ERROR_MSG_MINLEN (12U - OF_HEADER_FIXLEN)
#define OF_STATS_REQUEST_MINLEN (12U - OF_HEADER_FIXLEN)
#define OF_STATS_REPLY_MINLEN (12U - OF_HEADER_FIXLEN)
#define OF_VENDOR_MINLEN (12U - OF_HEADER_FIXLEN)
#define OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN (12U - OF_HEADER_FIXLEN)
#define OF_QUEUE_GET_CONFIG_REPLY_MINLEN (16U - OF_HEADER_FIXLEN)
/* lengths (fixed or minimal) of particular protocol structures */
#define OF_PHY_PORT_FIXLEN 48
#define OF_ACTION_MINLEN 8
#define OF_MATCH_FIXLEN 40
#define OF_DESC_STATS_REPLY_FIXLEN 1056
#define OF_FLOW_STATS_REQUEST_FIXLEN 44
#define OF_FLOW_STATS_REPLY_MINLEN 88
#define OF_AGGREGATE_STATS_REPLY_FIXLEN 24
#define OF_TABLE_STATS_REPLY_FIXLEN 64
#define OF_PORT_STATS_REQUEST_FIXLEN 8
#define OF_PORT_STATS_REPLY_FIXLEN 104
#define OF_QUEUE_PROP_MINLEN 8
#define OF_QUEUE_PROP_MIN_RATE_FIXLEN 16
#define OF_PACKET_QUEUE_MINLEN 8
#define OF_QUEUE_STATS_REQUEST_FIXLEN 8
#define OF_QUEUE_STATS_REPLY_FIXLEN 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 0xffffU
/* 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)")];
if (vid == OFP_VLAN_NONE)
return "NONE";
snprintf(buf, sizeof(buf), "%u%s", vid,
(vid > 0 && vid < 0x0fff) ? "" : " (bogus)");
return buf;
}
static const char *
pcp_str(const uint8_t pcp)
{
static char buf[sizeof("255 (bogus)")];
snprintf(buf, sizeof(buf), "%u%s", pcp,
pcp <= 7 ? "" : " (bogus)");
return buf;
}
static void
of10_bsn_message_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint32_t subtype;
ND_PRINT("\n\t");
ND_ICHECK_U(len, <, 4);
/* subtype */
subtype = GET_BE_U_4(cp);
OF_FWD(4);
ND_PRINT(" 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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 8);
/* index */
ND_PRINT(", index %u", GET_U_1(cp));
OF_FWD(1);
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_7(cp);
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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 8);
/* index */
ND_PRINT(", index %u", GET_U_1(cp));
OF_FWD(1);
/* pad */
OF_FWD(3);
/* mask */
ND_PRINT(", mask %s", GET_IPADDR_STRING(cp));
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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 4);
/* report_mirror_ports */
ND_PRINT(", report_mirror_ports %s",
tok2str(bsn_onoff_str, "bogus (%u)", GET_U_1(cp)));
OF_FWD(1);
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_3(cp);
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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 0);
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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 4);
/* vport_no */
ND_PRINT(", vport_no %u", GET_BE_U_4(cp));
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 ...
* +---------------+---------------+--------
*
*/
ND_ICHECK_U(len, <, 4);
/* service */
ND_PRINT(", service %u", GET_BE_U_4(cp));
OF_FWD(4);
/* data */
ND_PRINT(", data '");
nd_printjn(ndo, cp, len);
ND_PRINT("'");
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(", data '");
nd_printjn(ndo, cp, len);
ND_PRINT("'");
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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 4);
/* status */
ND_PRINT(", status 0x%08x", GET_BE_U_4(cp));
break;
default:
ND_TCHECK_LEN(cp, len);
}
return;
invalid: /* skip the undersized data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
static void
of10_bsn_actions_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint32_t subtype, vlan_tag;
ND_PRINT("\n\t ");
ND_ICHECK_U(len, <, 4);
/* subtype */
subtype = GET_BE_U_4(cp);
OF_FWD(4);
ND_PRINT(" 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 |
* +---------------+---------------+---------------+---------------+
*
*/
ND_ICHECK_U(len, !=, 12);
/* dest_port */
ND_PRINT(", dest_port %u", GET_BE_U_4(cp));
OF_FWD(4);
/* vlan_tag */
vlan_tag = GET_BE_U_4(cp);
OF_FWD(4);
switch (vlan_tag >> 16) {
case 0:
ND_PRINT(", vlan_tag none");
break;
case ETHERTYPE_8021Q:
ND_PRINT(", vlan_tag 802.1Q (%s)", ieee8021q_tci_string(vlan_tag & 0xffff));
break;
default:
ND_PRINT(", vlan_tag unknown (0x%04x)", vlan_tag >> 16);
}
/* copy_stage */
ND_PRINT(", copy_stage %s",
tok2str(bsn_mirror_copy_stage_str, "unknown (%u)", GET_U_1(cp)));
OF_FWD(1);
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_3(cp);
break;
default:
ND_TCHECK_LEN(cp, len);
}
return;
invalid:
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
static void
of10_vendor_action_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint32_t vendor;
void (*decoder)(netdissect_options *, const u_char *, u_int);
ND_ICHECK_U(len, <, 4);
/* vendor */
vendor = GET_BE_U_4(cp);
OF_FWD(4);
ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
/* data */
decoder =
vendor == OUI_BSN ? of10_bsn_actions_print :
of_data_print;
decoder(ndo, cp, len);
return;
invalid: /* skip the undersized data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.5.4 */
static void
of10_vendor_message_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint32_t vendor;
void (*decoder)(netdissect_options *, const u_char *, u_int);
/* vendor */
vendor = GET_BE_U_4(cp);
OF_FWD(4);
ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
/* data */
decoder =
vendor == OUI_BSN ? of10_bsn_message_print :
of_data_print;
decoder(ndo, cp, len);
}
/* Vendor ID is mandatory, data is optional. */
static void
of10_vendor_data_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint32_t vendor;
ND_ICHECK_U(len, <, 4);
/* vendor */
vendor = GET_BE_U_4(cp);
OF_FWD(4);
ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
/* data */
of_data_print(ndo, cp, len);
return;
invalid: /* skip the undersized data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
static void
of10_packet_data_print(netdissect_options *ndo,
const u_char *cp, const u_int len)
{
if (len == 0)
return;
/* data */
ND_PRINT("\n\t data (%u octets)", len);
if (ndo->ndo_vflag < 3) {
ND_TCHECK_LEN(cp, len);
return;
}
ndo->ndo_vflag -= 3;
ND_PRINT(", frame decoding below\n");
/*
* The encapsulated Ethernet frame is not necessarily the last
* data of this packet (i.e. there may be more OpenFlow messages
* after the current OFPT_PACKET_IN/OFPT_PACKET_OUT message, in
* which case the current (outer) packet's snapshot end is not
* what ether_print() needs to decode an Ethernet frame nested in
* the middle of a TCP payload.
*/
const u_char *snapend_save = ndo->ndo_snapend;
ndo->ndo_snapend = ND_MIN(cp + len, ndo->ndo_snapend);
ether_print(ndo, cp, len, ND_BYTES_AVAILABLE_AFTER(cp), NULL, NULL);
ndo->ndo_snapend = snapend_save;
ndo->ndo_vflag += 3;
}
/* [OF10] Section 5.2.1 */
static void
of10_phy_port_print(netdissect_options *ndo,
const u_char *cp)
{
uint32_t state;
/* port_no */
ND_PRINT("\n\t port_no %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
cp += 2;
/* hw_addr */
ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
cp += MAC_ADDR_LEN;
/* name */
ND_PRINT(", name '");
nd_printjnp(ndo, cp, OFP_MAX_PORT_NAME_LEN);
ND_PRINT("'");
cp += OFP_MAX_PORT_NAME_LEN;
if (ndo->ndo_vflag < 2) {
ND_TCHECK_LEN(cp, 24);
return;
}
/* config */
ND_PRINT("\n\t config 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
cp += 4;
/* state */
state = GET_BE_U_4(cp);
/*
* Decode the code point and the single bit separately, but
* format the result as a single sequence of comma-separated
* strings (see the comments at the OFPPS_ props).
*/
ND_PRINT("\n\t state 0x%08x (%s%s)%s", state,
tok2str(ofpps_stp_str, "", state & OFPPS_STP_MASK),
state & OFPPS_LINK_DOWN ? ", LINK_DOWN" : "",
state & OFPPS_U ? " (bogus)" : "");
cp += 4;
/* curr */
ND_PRINT("\n\t curr 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
cp += 4;
/* advertised */
ND_PRINT("\n\t advertised 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
cp += 4;
/* supported */
ND_PRINT("\n\t supported 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
cp += 4;
/* peer */
ND_PRINT("\n\t peer 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
}
/* [OF10] Section 5.2.2 */
static void
of10_queue_props_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
uint16_t property, plen;
u_char plen_bogus = 0, skip = 0;
ND_PRINT("\n\t ");
ND_ICHECKMSG_U("remaining length", len, <, OF_QUEUE_PROP_MINLEN);
/* property */
property = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(" property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property));
/* len */
plen = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(", len %u", plen);
ND_ICHECKMSG_U("property length", plen, <, OF_QUEUE_PROP_MINLEN);
ND_ICHECKMSG_U("property length", plen, >, len + 4);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(4);
/* property-specific constraints and decoding */
switch (property) {
case OFPQT_NONE:
plen_bogus = plen != OF_QUEUE_PROP_MINLEN;
break;
case OFPQT_MIN_RATE:
plen_bogus = plen != OF_QUEUE_PROP_MIN_RATE_FIXLEN;
break;
default:
skip = 1;
}
if (plen_bogus) {
ND_PRINT(" (bogus)");
skip = 1;
}
if (skip) {
/*
* plen >= OF_QUEUE_PROP_MINLEN
* cp is OF_QUEUE_PROP_MINLEN bytes in
*/
OF_CHK_FWD(plen - OF_QUEUE_PROP_MINLEN);
continue;
}
if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */
/* rate */
uint16_t rate = GET_BE_U_2(cp);
OF_FWD(2);
if (rate > 1000)
ND_PRINT(", rate disabled");
else
ND_PRINT(", rate %u.%u%%", rate / 10, rate % 10);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(6);
}
} /* while */
return;
invalid: /* skip the rest of queue properties */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_queues_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
uint16_t desclen;
ND_PRINT("\n\t ");
ND_ICHECKMSG_U("remaining length", len, <, OF_PACKET_QUEUE_MINLEN);
/* queue_id */
ND_PRINT(" queue_id %u", GET_BE_U_4(cp));
OF_FWD(4);
/* len */
desclen = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(", len %u", desclen);
ND_ICHECKMSG_U("prop. desc. length", desclen, <, OF_PACKET_QUEUE_MINLEN);
ND_ICHECKMSG_U("prop. desc. length", desclen, >, len + 6);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(2);
/* properties */
if (ndo->ndo_vflag >= 2)
of10_queue_props_print(ndo, cp, desclen - OF_PACKET_QUEUE_MINLEN);
else
ND_TCHECK_LEN(cp, desclen - OF_PACKET_QUEUE_MINLEN);
OF_FWD(desclen - OF_PACKET_QUEUE_MINLEN);
} /* while */
return;
invalid: /* skip the rest of queues */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.2.3 */
static void
of10_match_print(netdissect_options *ndo,
const char *pfx, const u_char *cp)
{
uint32_t wildcards;
uint16_t dl_type;
uint8_t nw_proto;
u_int nw_bits;
const char *field_name;
/* wildcards */
wildcards = GET_BE_U_4(cp);
if (wildcards & OFPFW_U)
ND_PRINT("%swildcards 0x%08x (bogus)", pfx, wildcards);
cp += 4;
/* in_port */
if (! (wildcards & OFPFW_IN_PORT))
ND_PRINT("%smatch in_port %s", pfx,
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
cp += 2;
/* dl_src */
if (! (wildcards & OFPFW_DL_SRC))
ND_PRINT("%smatch dl_src %s", pfx, GET_ETHERADDR_STRING(cp));
cp += MAC_ADDR_LEN;
/* dl_dst */
if (! (wildcards & OFPFW_DL_DST))
ND_PRINT("%smatch dl_dst %s", pfx, GET_ETHERADDR_STRING(cp));
cp += MAC_ADDR_LEN;
/* dl_vlan */
if (! (wildcards & OFPFW_DL_VLAN))
ND_PRINT("%smatch dl_vlan %s", pfx, vlan_str(GET_BE_U_2(cp)));
cp += 2;
/* dl_vlan_pcp */
if (! (wildcards & OFPFW_DL_VLAN_PCP))
ND_PRINT("%smatch dl_vlan_pcp %s", pfx, pcp_str(GET_U_1(cp)));
cp += 1;
/* pad1 */
cp += 1;
/* dl_type */
dl_type = GET_BE_U_2(cp);
cp += 2;
if (! (wildcards & OFPFW_DL_TYPE))
ND_PRINT("%smatch dl_type 0x%04x", pfx, dl_type);
/* nw_tos */
if (! (wildcards & OFPFW_NW_TOS))
ND_PRINT("%smatch nw_tos 0x%02x", pfx, GET_U_1(cp));
cp += 1;
/* nw_proto */
nw_proto = GET_U_1(cp);
cp += 1;
if (! (wildcards & OFPFW_NW_PROTO)) {
field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_ARP
? "arp_opcode" : "nw_proto";
ND_PRINT("%smatch %s %u", pfx, field_name, nw_proto);
}
/* pad2 */
cp += 2;
/* nw_src */
nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT;
if (nw_bits < 32)
ND_PRINT("%smatch nw_src %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
cp += 4;
/* nw_dst */
nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT;
if (nw_bits < 32)
ND_PRINT("%smatch nw_dst %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
cp += 4;
/* tp_src */
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("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
}
cp += 2;
/* tp_dst */
/* The last unconditional check was at nw_proto, so have an "else" here. */
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("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
}
else
ND_TCHECK_2(cp);
}
/* [OF10] Section 5.2.4 */
static void
of10_actions_print(netdissect_options *ndo,
const char *pfx, const u_char *cp, u_int len)
{
while (len) {
uint16_t type, alen, output_port;
u_char alen_bogus = 0, skip = 0;
ND_PRINT("%saction", pfx);
ND_ICHECKMSG_U("remaining length", len, <, OF_ACTION_MINLEN);
/* type */
type = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(" type %s", tok2str(ofpat_str, "invalid (0x%04x)", type));
/* length */
alen = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(", len %u", alen);
/*
* The 4-byte "pad" in the specification is not a field of the
* action header, but a placeholder to illustrate the 64-bit
* alignment requirement. Action type specific case blocks
* below fetch these 4 bytes.
*/
/* On action size underrun/overrun skip the rest of the action list. */
ND_ICHECK_U(alen, <, OF_ACTION_MINLEN);
ND_ICHECK_U(alen, >, len + 4);
/*
* After validating the basic length constraint it will be safe
* to skip the current action if the action size is not valid
* for the type or the type is invalid.
*/
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(" (bogus)");
skip = 1;
}
if (skip) {
/*
* alen >= OF_ACTION_MINLEN
* cp is 4 bytes in
*/
OF_CHK_FWD(alen - 4);
continue;
}
/* OK to decode the rest of the action structure */
switch (type) {
case OFPAT_OUTPUT:
/* port */
output_port = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT(", port %s", tok2str(ofpp_str, "%u", output_port));
/* max_len */
if (output_port == OFPP_CONTROLLER)
ND_PRINT(", max_len %u", GET_BE_U_2(cp));
else
ND_TCHECK_2(cp);
OF_FWD(2);
break;
case OFPAT_SET_VLAN_VID:
/* vlan_vid */
ND_PRINT(", vlan_vid %s", vlan_str(GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(2);
break;
case OFPAT_SET_VLAN_PCP:
/* vlan_pcp */
ND_PRINT(", vlan_pcp %s", pcp_str(GET_U_1(cp)));
OF_FWD(1);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(3);
break;
case OFPAT_SET_DL_SRC:
case OFPAT_SET_DL_DST:
/* dl_addr */
ND_PRINT(", dl_addr %s", GET_ETHERADDR_STRING(cp));
OF_FWD(MAC_ADDR_LEN);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(6);
break;
case OFPAT_SET_NW_SRC:
case OFPAT_SET_NW_DST:
/* nw_addr */
ND_PRINT(", nw_addr %s", GET_IPADDR_STRING(cp));
OF_FWD(4);
break;
case OFPAT_SET_NW_TOS:
/* nw_tos */
ND_PRINT(", nw_tos 0x%02x", GET_U_1(cp));
OF_FWD(1);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(3);
break;
case OFPAT_SET_TP_SRC:
case OFPAT_SET_TP_DST:
/* nw_tos */
ND_PRINT(", tp_port %u", GET_BE_U_2(cp));
OF_FWD(2);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(2);
break;
case OFPAT_ENQUEUE:
/* port */
ND_PRINT(", port %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
OF_FWD(6);
/* queue_id */
ND_PRINT(", queue_id %s",
tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
OF_FWD(4);
break;
case OFPAT_VENDOR:
of10_vendor_action_print(ndo, cp, alen - 4);
OF_FWD(alen - 4);
break;
case OFPAT_STRIP_VLAN:
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(4);
break;
} /* switch */
} /* while */
return;
invalid: /* skip the rest of actions */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.3.1 */
static void
of10_features_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
/* datapath_id */
ND_PRINT("\n\t dpid 0x%016" PRIx64, GET_BE_U_8(cp));
OF_FWD(8);
/* n_buffers */
ND_PRINT(", n_buffers %u", GET_BE_U_4(cp));
OF_FWD(4);
/* n_tables */
ND_PRINT(", n_tables %u", GET_U_1(cp));
OF_FWD(1);
/* pad */
OF_FWD(3);
/* capabilities */
ND_PRINT("\n\t capabilities 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofp_capabilities_bm, GET_BE_U_4(cp), OFPCAP_U);
OF_FWD(4);
/* actions */
ND_PRINT("\n\t actions 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofpat_bm, GET_BE_U_4(cp), OFPAT_U);
OF_FWD(4);
/* ports */
while (len) {
ND_ICHECKMSG_U("\n\t port def. length", len, <, OF_PHY_PORT_FIXLEN);
of10_phy_port_print(ndo, cp);
OF_FWD(OF_PHY_PORT_FIXLEN);
}
return;
invalid: /* skip the undersized trailing data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.3.2 */
static void
of10_switch_config_msg_print(netdissect_options *ndo,
const u_char *cp, u_int len _U_)
{
/* flags */
ND_PRINT("\n\t flags %s",
tok2str(ofp_config_str, "invalid (0x%04x)", GET_BE_U_2(cp)));
cp += 2;
/* miss_send_len */
ND_PRINT(", miss_send_len %u", GET_BE_U_2(cp));
}
/* [OF10] Section 5.3.3 */
static void
of10_flow_mod_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint16_t command;
/* match */
of10_match_print(ndo, "\n\t ", cp);
OF_FWD(OF_MATCH_FIXLEN);
/* cookie */
ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
OF_FWD(8);
/* command */
command = GET_BE_U_2(cp);
ND_PRINT(", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command));
OF_FWD(2);
/* idle_timeout */
if (GET_BE_U_2(cp))
ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
OF_FWD(2);
/* hard_timeout */
if (GET_BE_U_2(cp))
ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
OF_FWD(2);
/* priority */
if (GET_BE_U_2(cp))
ND_PRINT(", priority %u", GET_BE_U_2(cp));
OF_FWD(2);
/* buffer_id */
if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
command == OFPFC_MODIFY_STRICT)
ND_PRINT(", buffer_id %s",
tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
OF_FWD(4);
/* out_port */
if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT)
ND_PRINT(", out_port %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* flags */
ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
of_bitmap_print(ndo, ofpff_bm, GET_BE_U_2(cp), OFPFF_U);
OF_FWD(2);
/* actions */
of10_actions_print(ndo, "\n\t ", cp, len);
}
/* ibid */
static void
of10_port_mod_print(netdissect_options *ndo,
const u_char *cp, u_int len _U_)
{
/* port_no */
ND_PRINT("\n\t port_no %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
cp += 2;
/* hw_addr */
ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
cp += MAC_ADDR_LEN;
/* config */
ND_PRINT("\n\t config 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
cp += 4;
/* mask */
ND_PRINT("\n\t mask 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
cp += 4;
/* advertise */
ND_PRINT("\n\t advertise 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
cp += 4;
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_4(cp);
}
/* [OF10] Section 5.3.4 */
static void
of10_queue_get_config_request_print(netdissect_options *ndo,
const u_char *cp, u_int len _U_)
{
/* port */
ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
cp += 2;
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_2(cp);
}
/* ibid */
static void
of10_queue_get_config_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
/* port */
ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(6);
/* queues */
of10_queues_print(ndo, cp, len);
}
/* [OF10] Section 5.3.5 */
static void
of10_stats_request_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint16_t type;
/* type */
type = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
/* flags */
ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
if (GET_BE_U_2(cp))
ND_PRINT(" (bogus)");
OF_FWD(2);
/* type-specific body of one of fixed lengths */
switch(type) {
case OFPST_DESC:
case OFPST_TABLE:
ND_ICHECK_U(len, !=, 0);
return;
case OFPST_FLOW:
case OFPST_AGGREGATE:
ND_ICHECK_U(len, !=, OF_FLOW_STATS_REQUEST_FIXLEN);
/* match */
of10_match_print(ndo, "\n\t ", cp);
OF_FWD(OF_MATCH_FIXLEN);
/* table_id */
ND_PRINT("\n\t table_id %s",
tok2str(tableid_str, "%u", GET_U_1(cp)));
OF_FWD(1);
/* pad */
OF_FWD(1);
/* out_port */
ND_PRINT(", out_port %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
return;
case OFPST_PORT:
ND_ICHECK_U(len, !=, OF_PORT_STATS_REQUEST_FIXLEN);
/* port_no */
ND_PRINT("\n\t port_no %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
/* Always the last field, check bounds. */
OF_CHK_FWD(6);
return;
case OFPST_QUEUE:
ND_ICHECK_U(len, !=, OF_QUEUE_STATS_REQUEST_FIXLEN);
/* port_no */
ND_PRINT("\n\t port_no %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
OF_FWD(2);
/* queue_id */
ND_PRINT(", queue_id %s",
tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
return;
case OFPST_VENDOR:
of10_vendor_data_print(ndo, cp, len);
return;
}
return;
invalid: /* skip the message body */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_desc_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
ND_PRINT("\n\t ");
ND_ICHECK_U(len, !=, OF_DESC_STATS_REPLY_FIXLEN);
/* mfr_desc */
ND_PRINT(" mfr_desc '");
nd_printjnp(ndo, cp, DESC_STR_LEN);
ND_PRINT("'");
OF_FWD(DESC_STR_LEN);
/* hw_desc */
ND_PRINT("\n\t hw_desc '");
nd_printjnp(ndo, cp, DESC_STR_LEN);
ND_PRINT("'");
OF_FWD(DESC_STR_LEN);
/* sw_desc */
ND_PRINT("\n\t sw_desc '");
nd_printjnp(ndo, cp, DESC_STR_LEN);
ND_PRINT("'");
OF_FWD(DESC_STR_LEN);
/* serial_num */
ND_PRINT("\n\t serial_num '");
nd_printjnp(ndo, cp, SERIAL_NUM_LEN);
ND_PRINT("'");
OF_FWD(SERIAL_NUM_LEN);
/* dp_desc */
ND_PRINT("\n\t dp_desc '");
nd_printjnp(ndo, cp, DESC_STR_LEN);
ND_PRINT("'");
return;
invalid: /* skip the message body */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_flow_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
uint16_t entry_len;
ND_PRINT("\n\t");
ND_ICHECKMSG_U("remaining length", len, <, OF_FLOW_STATS_REPLY_MINLEN);
/* length */
entry_len = GET_BE_U_2(cp);
ND_PRINT(" length %u", entry_len);
ND_ICHECK_U(entry_len, <, OF_FLOW_STATS_REPLY_MINLEN);
ND_ICHECK_U(entry_len, >, len);
OF_FWD(2);
/* table_id */
ND_PRINT(", table_id %s",
tok2str(tableid_str, "%u", GET_U_1(cp)));
OF_FWD(1);
/* pad */
OF_FWD(1);
/* match */
of10_match_print(ndo, "\n\t ", cp);
OF_FWD(OF_MATCH_FIXLEN);
/* duration_sec */
ND_PRINT("\n\t duration_sec %u", GET_BE_U_4(cp));
OF_FWD(4);
/* duration_nsec */
ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
OF_FWD(4);
/* priority */
ND_PRINT(", priority %u", GET_BE_U_2(cp));
OF_FWD(2);
/* idle_timeout */
ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
OF_FWD(2);
/* hard_timeout */
ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
OF_FWD(2);
/* pad2 */
OF_FWD(6);
/* cookie */
ND_PRINT(", cookie 0x%016" PRIx64, GET_BE_U_8(cp));
OF_FWD(8);
/* packet_count */
ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* byte_count */
ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* actions */
of10_actions_print(ndo, "\n\t ", cp, entry_len - OF_FLOW_STATS_REPLY_MINLEN);
OF_FWD(entry_len - OF_FLOW_STATS_REPLY_MINLEN);
} /* while */
return;
invalid: /* skip the rest of flow statistics entries */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_aggregate_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
ND_PRINT("\n\t");
ND_ICHECKMSG_U("remaining length", len, !=, OF_AGGREGATE_STATS_REPLY_FIXLEN);
/* packet_count */
ND_PRINT(" packet_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* byte_count */
ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* flow_count */
ND_PRINT(", flow_count %u", GET_BE_U_4(cp));
OF_FWD(4);
/* pad */
/* Always the last field, check bounds. */
ND_TCHECK_4(cp);
return;
invalid: /* skip the message body */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_table_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
ND_PRINT("\n\t");
ND_ICHECKMSG_U("remaining length", len, <, OF_TABLE_STATS_REPLY_FIXLEN);
/* table_id */
ND_PRINT(" table_id %s",
tok2str(tableid_str, "%u", GET_U_1(cp)));
OF_FWD(1);
/* pad */
OF_FWD(3);
/* name */
ND_PRINT(", name '");
nd_printjnp(ndo, cp, OFP_MAX_TABLE_NAME_LEN);
ND_PRINT("'");
OF_FWD(OFP_MAX_TABLE_NAME_LEN);
/* wildcards */
ND_PRINT("\n\t wildcards 0x%08x", GET_BE_U_4(cp));
of_bitmap_print(ndo, ofpfw_bm, GET_BE_U_4(cp), OFPFW_U);
OF_FWD(4);
/* max_entries */
ND_PRINT("\n\t max_entries %u", GET_BE_U_4(cp));
OF_FWD(4);
/* active_count */
ND_PRINT(", active_count %u", GET_BE_U_4(cp));
OF_FWD(4);
/* lookup_count */
ND_PRINT(", lookup_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* matched_count */
ND_PRINT(", matched_count %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
} /* while */
return;
invalid: /* skip the undersized trailing data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_port_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
ND_PRINT("\n\t ");
ND_ICHECKMSG_U("remaining length", len, <, OF_PORT_STATS_REPLY_FIXLEN);
/* port_no */
ND_PRINT(" port_no %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
if (ndo->ndo_vflag < 2) {
OF_CHK_FWD(OF_PORT_STATS_REPLY_FIXLEN - 2);
continue;
}
/* pad */
OF_FWD(6);
/* rx_packets */
ND_PRINT(", rx_packets %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_packets */
ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_bytes */
ND_PRINT(", rx_bytes %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_bytes */
ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_dropped */
ND_PRINT(", rx_dropped %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_dropped */
ND_PRINT(", tx_dropped %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_errors */
ND_PRINT(", rx_errors %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_errors */
ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_frame_err */
ND_PRINT(", rx_frame_err %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_over_err */
ND_PRINT(", rx_over_err %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* rx_crc_err */
ND_PRINT(", rx_crc_err %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* collisions */
ND_PRINT(", collisions %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
} /* while */
return;
invalid: /* skip the undersized trailing data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_queue_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
while (len) {
ND_PRINT("\n\t ");
ND_ICHECKMSG_U("remaining length", len, <, OF_QUEUE_STATS_REPLY_FIXLEN);
/* port_no */
ND_PRINT(" port_no %s",
tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* pad */
OF_FWD(2);
/* queue_id */
ND_PRINT(", queue_id %u", GET_BE_U_4(cp));
OF_FWD(4);
/* tx_bytes */
ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_packets */
ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
/* tx_errors */
ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
OF_FWD(8);
} /* while */
return;
invalid: /* skip the undersized trailing data */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* ibid */
static void
of10_stats_reply_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint16_t type;
/* type */
type = GET_BE_U_2(cp);
ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
OF_FWD(2);
/* flags */
ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
of_bitmap_print(ndo, ofpsf_reply_bm, GET_BE_U_2(cp), OFPSF_REPLY_U);
OF_FWD(2);
if (ndo->ndo_vflag > 0) {
void (*decoder)(netdissect_options *, 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) {
decoder(ndo, cp, len);
return;
}
}
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.3.6 */
static void
of10_packet_out_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint16_t actions_len;
/* buffer_id */
ND_PRINT("\n\t buffer_id 0x%08x", GET_BE_U_4(cp));
OF_FWD(4);
/* in_port */
ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* actions_len */
actions_len = GET_BE_U_2(cp);
ND_PRINT(", actions_len %u", actions_len);
OF_FWD(2);
ND_ICHECK_U(actions_len, >, len);
/* actions */
of10_actions_print(ndo, "\n\t ", cp, actions_len);
OF_FWD(actions_len);
/* data */
of10_packet_data_print(ndo, cp, len);
return;
invalid: /* skip the rest of the message body */
nd_print_invalid(ndo);
ND_TCHECK_LEN(cp, len);
}
/* [OF10] Section 5.4.1 */
static void
of10_packet_in_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
/* buffer_id */
ND_PRINT("\n\t buffer_id %s",
tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
OF_FWD(4);
/* total_len */
ND_PRINT(", total_len %u", GET_BE_U_2(cp));
OF_FWD(2);
/* in_port */
ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
OF_FWD(2);
/* reason */
ND_PRINT(", reason %s",
tok2str(ofpr_str, "invalid (0x%02x)", GET_U_1(cp)));
OF_FWD(1);
/* pad */
/* Sometimes the last field, check bounds. */
OF_CHK_FWD(1);
/* data */
of10_packet_data_print(ndo, cp, len);
}
/* [OF10] Section 5.4.2 */
static void
of10_flow_removed_print(netdissect_options *ndo,
const u_char *cp, u_int len _U_)
{
/* match */
of10_match_print(ndo, "\n\t ", cp);
cp += OF_MATCH_FIXLEN;
/* cookie */
ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
cp += 8;
/* priority */
if (GET_BE_U_2(cp))
ND_PRINT(", priority %u", GET_BE_U_2(cp));
cp += 2;
/* reason */
ND_PRINT(", reason %s",
tok2str(ofprr_str, "unknown (0x%02x)", GET_U_1(cp)));
cp += 1;
/* pad */
cp += 1;
/* duration_sec */
ND_PRINT(", duration_sec %u", GET_BE_U_4(cp));
cp += 4;
/* duration_nsec */
ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
cp += 4;
/* idle_timeout */
if (GET_BE_U_2(cp))
ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
cp += 2;
/* pad2 */
cp += 2;
/* packet_count */
ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
cp += 8;
/* byte_count */
ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
}
/* [OF10] Section 5.4.3 */
static void
of10_port_status_print(netdissect_options *ndo,
const u_char *cp, u_int len _U_)
{
/* reason */
ND_PRINT("\n\t reason %s",
tok2str(ofppr_str, "invalid (0x%02x)", GET_U_1(cp)));
cp += 1;
/* pad */
/* No need to check bounds, more data follows. */
cp += 7;
/* desc */
of10_phy_port_print(ndo, cp);
}
/* [OF10] Section 5.4.4 */
static void
of10_error_print(netdissect_options *ndo,
const u_char *cp, u_int len)
{
uint16_t type, code;
const struct tok *code_str;
/* type */
type = GET_BE_U_2(cp);
OF_FWD(2);
ND_PRINT("\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type));
/* code */
code = GET_BE_U_2(cp);
OF_FWD(2);
code_str = uint2tokary(of10_ofpet2tokary, type);
if (code_str != NULL)
ND_PRINT(", code %s",
tok2str(code_str, "invalid (0x%04x)", code));
else
ND_PRINT(", code invalid (0x%04x)", code);
/* data */
of_data_print(ndo, cp, len);
}
static const struct of_msgtypeinfo of10_msgtypeinfo[OFPT_MAX + 1] = {
/*
* [OF10] Section 5.5.1
* Variable-size data.
*/
{
"HELLO", of_data_print,
REQ_MINLEN, 0
},
/*
* [OF10] Section 5.4.4
* A fixed-size message body and variable-size data.
*/
{
"ERROR", of10_error_print,
REQ_MINLEN, OF_ERROR_MSG_MINLEN
},
/*
* [OF10] Section 5.5.2
* Variable-size data.
*/
{
"ECHO_REQUEST", of_data_print,
REQ_MINLEN, 0
},
/*
* [OF10] Section 5.5.3
* Variable-size data.
*/
{
"ECHO_REPLY", of_data_print,
REQ_MINLEN, 0
},
/*
* [OF10] Section 5.5.4
* A fixed-size message body and variable-size data.
*/
{
"VENDOR", of10_vendor_message_print,
REQ_MINLEN, OF_VENDOR_MINLEN
},
/*
* [OF10] Section 5.3.1
* No message body.
*/
{
"FEATURES_REQUEST", NULL,
REQ_FIXLEN, 0
},
/*
* [OF10] Section 5.3.1
* A fixed-size message body and n * fixed-size data units.
*/
{
"FEATURES_REPLY", of10_features_reply_print,
REQ_MINLEN, OF_FEATURES_REPLY_MINLEN
},
/*
* [OF10] Section 5.3.2
* No message body.
*/
{
"GET_CONFIG_REQUEST", NULL,
REQ_FIXLEN, 0
},
/*
* [OF10] Section 5.3.2
* A fixed-size message body.
*/
{
"GET_CONFIG_REPLY", of10_switch_config_msg_print,
REQ_FIXLEN, OF_SWITCH_CONFIG_FIXLEN
},
/*
* [OF10] Section 5.3.2
* A fixed-size message body.
*/
{
"SET_CONFIG", of10_switch_config_msg_print,
REQ_FIXLEN, OF_SWITCH_CONFIG_FIXLEN
},
/*
* [OF10] Section 5.4.1
* A fixed-size message body and variable-size data.
* (The 2 mock octets count in OF_PACKET_IN_MINLEN only.)
*/
{
"PACKET_IN", of10_packet_in_print,
REQ_MINLEN, OF_PACKET_IN_MINLEN - 2
},
/*
* [OF10] Section 5.4.2
* A fixed-size message body.
*/
{
"FLOW_REMOVED", of10_flow_removed_print,
REQ_FIXLEN, OF_FLOW_REMOVED_FIXLEN
},
/*
* [OF10] Section 5.4.3
* A fixed-size message body.
*/
{
"PORT_STATUS", of10_port_status_print,
REQ_FIXLEN, OF_PORT_STATUS_FIXLEN
},
/*
* [OF10] Section 5.3.6
* A fixed-size message body, n * variable-size data units and
* variable-size data.
*/
{
"PACKET_OUT", of10_packet_out_print,
REQ_MINLEN, OF_PACKET_OUT_MINLEN
},
/*
* [OF10] Section 5.3.3
* A fixed-size message body and n * variable-size data units.
*/
{
"FLOW_MOD", of10_flow_mod_print,
REQ_MINLEN, OF_FLOW_MOD_MINLEN
},
/*
* [OF10] Section 5.3.3
* A fixed-size message body.
*/
{
"PORT_MOD", of10_port_mod_print,
REQ_FIXLEN, OF_PORT_MOD_FIXLEN
},
/*
* [OF10] Section 5.3.5
* A fixed-size message body and possibly more data of varying size
* and structure.
*/
{
"STATS_REQUEST", of10_stats_request_print,
REQ_MINLEN, OF_STATS_REQUEST_MINLEN
},
/*
* [OF10] Section 5.3.5
* A fixed-size message body and possibly more data of varying size
* and structure.
*/
{
"STATS_REPLY", of10_stats_reply_print,
REQ_MINLEN, OF_STATS_REPLY_MINLEN
},
/*
* [OF10] Section 5.3.7
* No message body.
*/
{
"BARRIER_REQUEST", NULL,
REQ_FIXLEN, 0
},
/*
* [OF10] Section 5.3.7
* No message body.
*/
{
"BARRIER_REPLY", NULL,
REQ_FIXLEN, 0
},
/*
* [OF10] Section 5.3.4
* A fixed-size message body.
*/
{
"QUEUE_GET_CONFIG_REQUEST", of10_queue_get_config_request_print,
REQ_FIXLEN, OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN
},
/*
* [OF10] Section 5.3.4
* A fixed-size message body and n * variable-size data units.
*/
{
"QUEUE_GET_CONFIG_REPLY", of10_queue_get_config_reply_print,
REQ_MINLEN, OF_QUEUE_GET_CONFIG_REPLY_MINLEN
},
};
const struct of_msgtypeinfo *
of10_identify_msgtype(const uint8_t type)
{
return type <= OFPT_MAX ? &of10_msgtypeinfo[type] : NULL;
}
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