/* * 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 * * 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. * * * 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "interface.h" #include "extract.h" #include "addrtoname.h" #include "ethertype.h" #include "ipproto.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 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_ETH_ALEN 6 #define OFP_VLAN_NONE 0xffff 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(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) { printf("%s%s", sep, t->s); sep = ", "; } /* unassigned bits? */ printf(v & u ? ") (bogus)" : ")"); } static const u_char * of10_data_print(const u_char *cp, const u_char *ep, const u_int len) { if (len == 0) return cp; /* data */ printf("\n\t data (%u octets)", len); TCHECK2(*cp, len); if (vflag >= 2) hex_and_ascii_print("\n\t ", cp, len); return cp + len; trunc: printf(" [|openflow]"); return ep; } /* Vendor ID is mandatory, data is optional. */ static const u_char * of10_vendor_data_print(const u_char *cp, const u_char *ep, const u_int len) { if (len < 4) goto corrupt; /* vendor */ TCHECK2(*cp, 4); printf(", vendor 0x%08x", EXTRACT_32BITS(cp)); cp += 4; /* data */ return of10_data_print(cp, ep, len - 4); corrupt: /* skip the undersized data */ printf(" (corrupt)"); TCHECK2(*cp, len); return cp + len; trunc: printf(" [|openflow]"); return ep; } static const u_char * of10_packet_data_print(const u_char *cp, const u_char *ep, const u_int len) { if (len == 0) return cp; /* data */ printf("\n\t data (%u octets)", len); if (vflag < 3) return cp + len; TCHECK2(*cp, len); vflag -= 3; printf(", frame decoding below\n"); ether_print(gndo, cp, len, snapend - cp, NULL, NULL); vflag += 3; return cp + len; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.2.1 */ static const u_char * of10_phy_ports_print(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 */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* hw_addr */ TCHECK2(*cp, OFP_ETH_ALEN); printf(", hw_addr %s", etheraddr_string(cp)); cp += OFP_ETH_ALEN; /* name */ TCHECK2(*cp, OFP_MAX_PORT_NAME_LEN); printf(", name '"); fn_print(cp, cp + OFP_MAX_PORT_NAME_LEN); printf("'"); cp += OFP_MAX_PORT_NAME_LEN; if (vflag < 2) { TCHECK2(*cp, 24); cp += 24; goto next_port; } /* config */ TCHECK2(*cp, 4); printf("\n\t config 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U); cp += 4; /* state */ TCHECK2(*cp, 4); printf("\n\t state 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofpps_bm, EXTRACT_32BITS(cp), OFPPS_U); cp += 4; /* curr */ TCHECK2(*cp, 4); printf("\n\t curr 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U); cp += 4; /* advertised */ TCHECK2(*cp, 4); printf("\n\t advertised 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U); cp += 4; /* supported */ TCHECK2(*cp, 4); printf("\n\t supported 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U); cp += 4; /* peer */ TCHECK2(*cp, 4); printf("\n\t peer 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(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 */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.2.2 */ static const u_char * of10_queue_props_print(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 */ TCHECK2(*cp, 2); property = EXTRACT_16BITS(cp); cp += 2; printf("\n\t property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property)); /* len */ TCHECK2(*cp, 2); plen = EXTRACT_16BITS(cp); cp += 2; printf(", len %u", plen); if (plen < OF_QUEUE_PROP_HEADER_LEN || plen > len) goto corrupt; /* pad */ 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) { printf(" (bogus)"); skip = 1; } if (skip) { TCHECK2(*cp, plen - 4); cp += plen - 4; goto next_property; } if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */ /* rate */ TCHECK2(*cp, 2); rate = EXTRACT_16BITS(cp); cp += 2; if (rate > 1000) printf(", rate disabled"); else printf(", rate %u.%u%%", rate / 10, rate % 10); /* pad */ TCHECK2(*cp, 6); cp += 6; } next_property: len -= plen; } /* while */ return cp; corrupt: /* skip the rest of queue properties */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_queues_print(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 */ TCHECK2(*cp, 4); printf("\n\t queue_id %u", EXTRACT_32BITS(cp)); cp += 4; /* len */ TCHECK2(*cp, 2); desclen = EXTRACT_16BITS(cp); cp += 2; printf(", len %u", desclen); if (desclen < OF_PACKET_QUEUE_LEN || desclen > len) goto corrupt; /* pad */ TCHECK2(*cp, 2); cp += 2; /* properties */ if (vflag < 2) { TCHECK2(*cp, desclen - OF_PACKET_QUEUE_LEN); cp += desclen - OF_PACKET_QUEUE_LEN; goto next_queue; } if (ep == (cp = of10_queue_props_print(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 */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.2.3 */ static const u_char * of10_match_print(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 */ TCHECK2(*cp, 4); wildcards = EXTRACT_32BITS(cp); if (wildcards & OFPFW_U) printf("%swildcards 0x%08x (bogus)", pfx, wildcards); cp += 4; /* in_port */ TCHECK2(*cp, 2); if (! (wildcards & OFPFW_IN_PORT)) printf("%smatch in_port %s", pfx, tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* dl_src */ TCHECK2(*cp, OFP_ETH_ALEN); if (! (wildcards & OFPFW_DL_SRC)) printf("%smatch dl_src %s", pfx, etheraddr_string(cp)); cp += OFP_ETH_ALEN; /* dl_dst */ TCHECK2(*cp, OFP_ETH_ALEN); if (! (wildcards & OFPFW_DL_DST)) printf("%smatch dl_dst %s", pfx, etheraddr_string(cp)); cp += OFP_ETH_ALEN; /* dl_vlan */ TCHECK2(*cp, 2); if (! (wildcards & OFPFW_DL_VLAN)) printf("%smatch dl_vlan %s", pfx, vlan_str(EXTRACT_16BITS(cp))); cp += 2; /* dl_vlan_pcp */ TCHECK2(*cp, 1); if (! (wildcards & OFPFW_DL_VLAN_PCP)) printf("%smatch dl_vlan_pcp %s", pfx, pcp_str(*cp)); cp += 1; /* pad1 */ TCHECK2(*cp, 1); cp += 1; /* dl_type */ TCHECK2(*cp, 2); dl_type = EXTRACT_16BITS(cp); cp += 2; if (! (wildcards & OFPFW_DL_TYPE)) printf("%smatch dl_type 0x%04x", pfx, dl_type); /* nw_tos */ TCHECK2(*cp, 1); if (! (wildcards & OFPFW_NW_TOS)) printf("%smatch nw_tos 0x%02x", pfx, *cp); cp += 1; /* nw_proto */ 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"; printf("%smatch %s %u", pfx, field_name, nw_proto); } /* pad2 */ TCHECK2(*cp, 2); cp += 2; /* nw_src */ TCHECK2(*cp, 4); nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT; if (nw_bits < 32) printf("%smatch nw_src %s/%u", pfx, ipaddr_string(cp), 32 - nw_bits); cp += 4; /* nw_dst */ TCHECK2(*cp, 4); nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT; if (nw_bits < 32) printf("%smatch nw_dst %s/%u", pfx, ipaddr_string(cp), 32 - nw_bits); cp += 4; /* tp_src */ 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"; printf("%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)); } cp += 2; /* tp_dst */ 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"; printf("%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)); } return cp + 2; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.2.4 */ static const u_char * of10_actions_print(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 */ TCHECK2(*cp, 2); type = EXTRACT_16BITS(cp); cp += 2; printf("%saction type %s", pfx, tok2str(ofpat_str, "invalid (0x%04x)", type)); /* length */ TCHECK2(*cp, 2); alen = EXTRACT_16BITS(cp); cp += 2; printf(", 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) { printf(" (bogus)"); skip = 1; } if (skip) { 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 */ TCHECK2(*cp, 2); output_port = EXTRACT_16BITS(cp); cp += 2; printf(", port %s", tok2str(ofpp_str, "%u", output_port)); /* max_len */ TCHECK2(*cp, 2); if (output_port == OFPP_CONTROLLER) printf(", max_len %u", EXTRACT_16BITS(cp)); cp += 2; break; case OFPAT_SET_VLAN_VID: /* vlan_vid */ TCHECK2(*cp, 2); printf(", vlan_vid %s", vlan_str(EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 2); cp += 2; break; case OFPAT_SET_VLAN_PCP: /* vlan_pcp */ TCHECK2(*cp, 1); printf(", vlan_pcp %s", pcp_str(*cp)); cp += 1; /* pad */ TCHECK2(*cp, 3); cp += 3; break; case OFPAT_SET_DL_SRC: case OFPAT_SET_DL_DST: /* dl_addr */ TCHECK2(*cp, OFP_ETH_ALEN); printf(", dl_addr %s", etheraddr_string(cp)); cp += OFP_ETH_ALEN; /* pad */ TCHECK2(*cp, 6); cp += 6; break; case OFPAT_SET_NW_SRC: case OFPAT_SET_NW_DST: /* nw_addr */ TCHECK2(*cp, 4); printf(", nw_addr %s", ipaddr_string(cp)); cp += 4; break; case OFPAT_SET_NW_TOS: /* nw_tos */ TCHECK2(*cp, 1); printf(", nw_tos 0x%02x", *cp); cp += 1; /* pad */ TCHECK2(*cp, 3); cp += 3; break; case OFPAT_SET_TP_SRC: case OFPAT_SET_TP_DST: /* nw_tos */ TCHECK2(*cp, 2); printf(", tp_port %u", EXTRACT_16BITS(cp)); cp += 2; /* pad */ TCHECK2(*cp, 2); cp += 2; break; case OFPAT_ENQUEUE: /* port */ TCHECK2(*cp, 2); printf(", port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 6); cp += 6; /* queue_id */ TCHECK2(*cp, 4); printf(", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))); cp += 4; break; case OFPAT_VENDOR: if (ep == (cp = of10_vendor_data_print(cp, ep, alen - 4))) return ep; /* end of snapshot */ break; case OFPAT_STRIP_VLAN: /* pad */ TCHECK2(*cp, 4); cp += 4; break; } /* switch */ next_action: len -= alen; } /* while */ return cp; corrupt: /* skip the rest of actions */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.3.1 */ static const u_char * of10_features_reply_print(const u_char *cp, const u_char *ep, const u_int len) { /* datapath_id */ TCHECK2(*cp, 8); printf("\n\t dpid 0x%016" PRIx64, EXTRACT_64BITS(cp)); cp += 8; /* n_buffers */ TCHECK2(*cp, 4); printf(", n_buffers %u", EXTRACT_32BITS(cp)); cp += 4; /* n_tables */ TCHECK2(*cp, 1); printf(", n_tables %u", *cp); cp += 1; /* pad */ TCHECK2(*cp, 3); cp += 3; /* capabilities */ TCHECK2(*cp, 4); printf("\n\t capabilities 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofp_capabilities_bm, EXTRACT_32BITS(cp), OFPCAP_U); cp += 4; /* actions */ TCHECK2(*cp, 4); printf("\n\t actions 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofpat_bm, EXTRACT_32BITS(cp), OFPAT_U); cp += 4; /* ports */ return of10_phy_ports_print(cp, ep, len - OF_SWITCH_FEATURES_LEN); trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.3.3 */ static const u_char * of10_flow_mod_print(const u_char *cp, const u_char *ep, const u_int len) { uint16_t command; /* match */ if (ep == (cp = of10_match_print("\n\t ", cp, ep))) return ep; /* end of snapshot */ /* cookie */ TCHECK2(*cp, 8); printf("\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)); cp += 8; /* command */ TCHECK2(*cp, 2); command = EXTRACT_16BITS(cp); printf(", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command)); cp += 2; /* idle_timeout */ TCHECK2(*cp, 2); if (EXTRACT_16BITS(cp)) printf(", idle_timeout %u", EXTRACT_16BITS(cp)); cp += 2; /* hard_timeout */ TCHECK2(*cp, 2); if (EXTRACT_16BITS(cp)) printf(", hard_timeout %u", EXTRACT_16BITS(cp)); cp += 2; /* priority */ TCHECK2(*cp, 2); if (EXTRACT_16BITS(cp)) printf(", priority %u", EXTRACT_16BITS(cp)); cp += 2; /* buffer_id */ TCHECK2(*cp, 4); if (command == OFPFC_ADD || command == OFPFC_MODIFY || command == OFPFC_MODIFY_STRICT) printf(", buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))); cp += 4; /* out_port */ TCHECK2(*cp, 2); if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT) printf(", out_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* flags */ TCHECK2(*cp, 2); printf(", flags 0x%04x", EXTRACT_16BITS(cp)); of10_bitmap_print(ofpff_bm, EXTRACT_16BITS(cp), OFPFF_U); cp += 2; /* actions */ return of10_actions_print("\n\t ", cp, ep, len - OF_FLOW_MOD_LEN); trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_port_mod_print(const u_char *cp, const u_char *ep) { /* port_no */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* hw_addr */ TCHECK2(*cp, OFP_ETH_ALEN); printf(", hw_addr %s", etheraddr_string(cp)); cp += OFP_ETH_ALEN; /* config */ TCHECK2(*cp, 4); printf("\n\t config 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U); cp += 4; /* mask */ TCHECK2(*cp, 4); printf("\n\t mask 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U); cp += 4; /* advertise */ TCHECK2(*cp, 4); printf("\n\t advertise 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U); cp += 4; /* pad */ TCHECK2(*cp, 4); return cp + 4; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.3.5 */ static const u_char * of10_stats_request_print(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 */ TCHECK2(*cp, 2); type = EXTRACT_16BITS(cp); cp += 2; printf("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)); /* flags */ TCHECK2(*cp, 2); printf(", flags 0x%04x", EXTRACT_16BITS(cp)); if (EXTRACT_16BITS(cp)) printf(" (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("\n\t ", cp, ep))) return ep; /* end of snapshot */ /* table_id */ TCHECK2(*cp, 1); printf("\n\t table_id %s", tok2str(tableid_str, "%u", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 1); cp += 1; /* out_port */ TCHECK2(*cp, 2); printf(", 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 */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 6); return cp + 6; case OFPST_QUEUE: if (len != OF_QUEUE_STATS_REQUEST_LEN) goto corrupt; /* port_no */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 2); cp += 2; /* queue_id */ TCHECK2(*cp, 4); printf(", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))); return cp + 4; case OFPST_VENDOR: return of10_vendor_data_print(cp, ep, len); } return cp; corrupt: /* skip the message body */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_desc_stats_reply_print(const u_char *cp, const u_char *ep, const u_int len) { if (len != OF_DESC_STATS_LEN) goto corrupt; /* mfr_desc */ TCHECK2(*cp, DESC_STR_LEN); printf("\n\t mfr_desc '"); fn_print(cp, cp + DESC_STR_LEN); printf("'"); cp += DESC_STR_LEN; /* hw_desc */ TCHECK2(*cp, DESC_STR_LEN); printf("\n\t hw_desc '"); fn_print(cp, cp + DESC_STR_LEN); printf("'"); cp += DESC_STR_LEN; /* sw_desc */ TCHECK2(*cp, DESC_STR_LEN); printf("\n\t sw_desc '"); fn_print(cp, cp + DESC_STR_LEN); printf("'"); cp += DESC_STR_LEN; /* serial_num */ TCHECK2(*cp, SERIAL_NUM_LEN); printf("\n\t serial_num '"); fn_print(cp, cp + SERIAL_NUM_LEN); printf("'"); cp += SERIAL_NUM_LEN; /* dp_desc */ TCHECK2(*cp, DESC_STR_LEN); printf("\n\t dp_desc '"); fn_print(cp, cp + DESC_STR_LEN); printf("'"); return cp + DESC_STR_LEN; corrupt: /* skip the message body */ printf(" (corrupt)"); TCHECK2(*cp, len); return cp + len; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_flow_stats_reply_print(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 */ TCHECK2(*cp, 2); entry_len = EXTRACT_16BITS(cp); printf("\n\t length %u", entry_len); if (entry_len < OF_FLOW_STATS_LEN || entry_len > len) goto corrupt; cp += 2; /* table_id */ TCHECK2(*cp, 1); printf(", table_id %s", tok2str(tableid_str, "%u", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 1); cp += 1; /* match */ if (ep == (cp = of10_match_print("\n\t ", cp, ep))) return ep; /* end of snapshot */ /* duration_sec */ TCHECK2(*cp, 4); printf("\n\t duration_sec %u", EXTRACT_32BITS(cp)); cp += 4; /* duration_nsec */ TCHECK2(*cp, 4); printf(", duration_nsec %u", EXTRACT_32BITS(cp)); cp += 4; /* priority */ TCHECK2(*cp, 2); printf(", priority %u", EXTRACT_16BITS(cp)); cp += 2; /* idle_timeout */ TCHECK2(*cp, 2); printf(", idle_timeout %u", EXTRACT_16BITS(cp)); cp += 2; /* hard_timeout */ TCHECK2(*cp, 2); printf(", hard_timeout %u", EXTRACT_16BITS(cp)); cp += 2; /* pad2 */ TCHECK2(*cp, 6); cp += 6; /* cookie */ TCHECK2(*cp, 8); printf(", cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)); cp += 8; /* packet_count */ TCHECK2(*cp, 8); printf(", packet_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* byte_count */ TCHECK2(*cp, 8); printf(", byte_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* actions */ if (ep == (cp = of10_actions_print("\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 */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_aggregate_stats_reply_print(const u_char *cp, const u_char *ep, const u_int len) { if (len != OF_AGGREGATE_STATS_REPLY_LEN) goto corrupt; /* packet_count */ TCHECK2(*cp, 8); printf("\n\t packet_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* byte_count */ TCHECK2(*cp, 8); printf(", byte_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* flow_count */ TCHECK2(*cp, 4); printf(", flow_count %u", EXTRACT_32BITS(cp)); cp += 4; /* pad */ TCHECK2(*cp, 4); return cp + 4; corrupt: /* skip the message body */ printf(" (corrupt)"); TCHECK2(*cp, len); return cp + len; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_table_stats_reply_print(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 */ TCHECK2(*cp, 1); printf("\n\t table_id %s", tok2str(tableid_str, "%u", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 3); cp += 3; /* name */ TCHECK2(*cp, OFP_MAX_TABLE_NAME_LEN); printf(", name '"); fn_print(cp, cp + OFP_MAX_TABLE_NAME_LEN); printf("'"); cp += OFP_MAX_TABLE_NAME_LEN; /* wildcards */ TCHECK2(*cp, 4); printf("\n\t wildcards 0x%08x", EXTRACT_32BITS(cp)); of10_bitmap_print(ofpfw_bm, EXTRACT_32BITS(cp), OFPFW_U); cp += 4; /* max_entries */ TCHECK2(*cp, 4); printf("\n\t max_entries %u", EXTRACT_32BITS(cp)); cp += 4; /* active_count */ TCHECK2(*cp, 4); printf(", active_count %u", EXTRACT_32BITS(cp)); cp += 4; /* lookup_count */ TCHECK2(*cp, 8); printf(", lookup_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* matched_count */ TCHECK2(*cp, 8); printf(", matched_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; len -= OF_TABLE_STATS_LEN; } /* while */ return cp; corrupt: /* skip the undersized trailing data */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_port_stats_reply_print(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 */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; if (vflag < 2) { TCHECK2(*cp, OF_PORT_STATS_LEN - 2); cp += OF_PORT_STATS_LEN - 2; goto next_port; } /* pad */ TCHECK2(*cp, 6); cp += 6; /* rx_packets */ TCHECK2(*cp, 8); printf(", rx_packets %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_packets */ TCHECK2(*cp, 8); printf(", tx_packets %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_bytes */ TCHECK2(*cp, 8); printf(", rx_bytes %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_bytes */ TCHECK2(*cp, 8); printf(", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_dropped */ TCHECK2(*cp, 8); printf(", rx_dropped %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_dropped */ TCHECK2(*cp, 8); printf(", tx_dropped %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_errors */ TCHECK2(*cp, 8); printf(", rx_errors %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_errors */ TCHECK2(*cp, 8); printf(", tx_errors %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_frame_err */ TCHECK2(*cp, 8); printf(", rx_frame_err %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_over_err */ TCHECK2(*cp, 8); printf(", rx_over_err %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* rx_crc_err */ TCHECK2(*cp, 8); printf(", rx_crc_err %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* collisions */ TCHECK2(*cp, 8); printf(", collisions %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; next_port: len -= OF_PORT_STATS_LEN; } /* while */ return cp; corrupt: /* skip the undersized trailing data */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_queue_stats_reply_print(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 */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 2); cp += 2; /* queue_id */ TCHECK2(*cp, 4); printf(", queue_id %u", EXTRACT_32BITS(cp)); cp += 4; /* tx_bytes */ TCHECK2(*cp, 8); printf(", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_packets */ TCHECK2(*cp, 8); printf(", tx_packets %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* tx_errors */ TCHECK2(*cp, 8); printf(", tx_errors %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; len -= OF_QUEUE_STATS_LEN; } /* while */ return cp; corrupt: /* skip the undersized trailing data */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* ibid */ static const u_char * of10_stats_reply_print(const u_char *cp, const u_char *ep, const u_int len) { const u_char *cp0 = cp; uint16_t type; /* type */ TCHECK2(*cp, 2); type = EXTRACT_16BITS(cp); printf("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)); cp += 2; /* flags */ TCHECK2(*cp, 2); printf(", flags 0x%04x", EXTRACT_16BITS(cp)); of10_bitmap_print(ofpsf_reply_bm, EXTRACT_16BITS(cp), OFPSF_REPLY_U); cp += 2; if (vflag > 0) { const u_char *(*decoder)(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(cp, ep, len - OF_STATS_REPLY_LEN); } TCHECK2(*cp0, len); return cp0 + len; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.3.6 */ static const u_char * of10_packet_out_print(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 */ TCHECK2(*cp, 4); printf("\n\t buffer_id 0x%08x", EXTRACT_32BITS(cp)); cp += 4; /* in_port */ TCHECK2(*cp, 2); printf(", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* actions_len */ 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("\n\t ", cp, ep, actions_len))) return ep; /* end of snapshot */ /* data */ return of10_packet_data_print(cp, ep, len - OF_PACKET_OUT_LEN - actions_len); corrupt: /* skip the rest of the message body */ printf(" (corrupt)"); TCHECK2(*cp0, len0); return cp0 + len0; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.4.1 */ static const u_char * of10_packet_in_print(const u_char *cp, const u_char *ep, const u_int len) { /* buffer_id */ TCHECK2(*cp, 4); printf("\n\t buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))); cp += 4; /* total_len */ TCHECK2(*cp, 2); printf(", total_len %u", EXTRACT_16BITS(cp)); cp += 2; /* in_port */ TCHECK2(*cp, 2); printf(", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* reason */ TCHECK2(*cp, 1); printf(", reason %s", tok2str(ofpr_str, "invalid (0x%02x)", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 1); cp += 1; /* data */ /* 2 mock octets count in OF_PACKET_IN_LEN but not in len */ return of10_packet_data_print(cp, ep, len - (OF_PACKET_IN_LEN - 2)); trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.4.2 */ static const u_char * of10_flow_removed_print(const u_char *cp, const u_char *ep) { /* match */ if (ep == (cp = of10_match_print("\n\t ", cp, ep))) return ep; /* end of snapshot */ /* cookie */ TCHECK2(*cp, 8); printf("\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)); cp += 8; /* priority */ TCHECK2(*cp, 2); if (EXTRACT_16BITS(cp)) printf(", priority %u", EXTRACT_16BITS(cp)); cp += 2; /* reason */ TCHECK2(*cp, 1); printf(", reason %s", tok2str(ofprr_str, "unknown (0x%02x)", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 1); cp += 1; /* duration_sec */ TCHECK2(*cp, 4); printf(", duration_sec %u", EXTRACT_32BITS(cp)); cp += 4; /* duration_nsec */ TCHECK2(*cp, 4); printf(", duration_nsec %u", EXTRACT_32BITS(cp)); cp += 4; /* idle_timeout */ TCHECK2(*cp, 2); if (EXTRACT_16BITS(cp)) printf(", idle_timeout %u", EXTRACT_16BITS(cp)); cp += 2; /* pad2 */ TCHECK2(*cp, 2); cp += 2; /* packet_count */ TCHECK2(*cp, 8); printf(", packet_count %" PRIu64, EXTRACT_64BITS(cp)); cp += 8; /* byte_count */ TCHECK2(*cp, 8); printf(", byte_count %" PRIu64, EXTRACT_64BITS(cp)); return cp + 8; trunc: printf(" [|openflow]"); return ep; } /* [OF10] Section 5.4.4 */ static const u_char * of10_error_print(const u_char *cp, const u_char *ep, const u_int len) { uint16_t type; const struct tok *code_str; /* type */ TCHECK2(*cp, 2); type = EXTRACT_16BITS(cp); cp += 2; printf("\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type)); /* code */ 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; printf(", code %s", tok2str(code_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))); cp += 2; /* data */ return of10_data_print(cp, ep, len - OF_ERROR_MSG_LEN); trunc: printf(" [|openflow]"); return ep; } const u_char * of10_header_body_print(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 */ printf("\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 (vflag < 1) goto next_message; /* flags */ TCHECK2(*cp, 2); printf("\n\t flags %s", tok2str(ofp_config_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))); cp += 2; /* miss_send_len */ TCHECK2(*cp, 2); printf(", miss_send_len %u", EXTRACT_16BITS(cp)); return cp + 2; case OFPT_PORT_MOD: if (len != OF_PORT_MOD_LEN) goto corrupt; if (vflag < 1) goto next_message; return of10_port_mod_print(cp, ep); case OFPT_QUEUE_GET_CONFIG_REQUEST: /* [OF10] Section 5.3.4 */ if (len != OF_QUEUE_GET_CONFIG_REQUEST_LEN) goto corrupt; if (vflag < 1) goto next_message; /* port */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 2); return cp + 2; case OFPT_FLOW_REMOVED: if (len != OF_FLOW_REMOVED_LEN) goto corrupt; if (vflag < 1) goto next_message; return of10_flow_removed_print(cp, ep); case OFPT_PORT_STATUS: /* [OF10] Section 5.4.3 */ if (len != OF_PORT_STATUS_LEN) goto corrupt; if (vflag < 1) goto next_message; /* reason */ TCHECK2(*cp, 1); printf("\n\t reason %s", tok2str(ofppr_str, "invalid (0x%02x)", *cp)); cp += 1; /* pad */ TCHECK2(*cp, 7); cp += 7; /* desc */ return of10_phy_ports_print(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 (vflag < 1) goto next_message; return of10_features_reply_print(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 (vflag < 1) goto next_message; return of10_data_print(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 (vflag < 1) goto next_message; return of10_error_print(cp, ep, len); case OFPT_VENDOR: /* [OF10] Section 5.5.4 */ if (len < OF_VENDOR_HEADER_LEN) goto corrupt; if (vflag < 1) goto next_message; return of10_vendor_data_print(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 (vflag < 1) goto next_message; return of10_packet_in_print(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 (vflag < 1) goto next_message; return of10_stats_request_print(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 (vflag < 1) goto next_message; return of10_stats_reply_print(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 (vflag < 1) goto next_message; return of10_packet_out_print(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 (vflag < 1) goto next_message; return of10_flow_mod_print(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 (vflag < 1) goto next_message; /* port */ TCHECK2(*cp, 2); printf("\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))); cp += 2; /* pad */ TCHECK2(*cp, 6); cp += 6; /* queues */ return of10_queues_print(cp, ep, len - OF_QUEUE_GET_CONFIG_REPLY_LEN); } /* switch (type) */ goto next_message; corrupt: /* skip the message body */ printf(" (corrupt)"); next_message: TCHECK2(*cp0, len0 - OF_HEADER_LEN); return cp0 + len0 - OF_HEADER_LEN; trunc: printf(" [|openflow]"); return ep; }