diff options
Diffstat (limited to 'epan/dissectors/packet-mbtcp.c')
| -rw-r--r-- | epan/dissectors/packet-mbtcp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/epan/dissectors/packet-mbtcp.c b/epan/dissectors/packet-mbtcp.c index 2cb213f8cb..f04a6f14b4 100644 --- a/epan/dissectors/packet-mbtcp.c +++ b/epan/dissectors/packet-mbtcp.c @@ -158,6 +158,7 @@ static gint ett_device_id_object_items = -1; static expert_field ei_mbrtu_crc16_incorrect = EI_INIT; static expert_field ei_modbus_data_decode = EI_INIT; +static expert_field ei_mbtcp_cannot_classify = EI_INIT; static dissector_handle_t modbus_handle; static dissector_handle_t mbtcp_handle; @@ -497,6 +498,9 @@ dissect_mbtcp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dat len+6, "Modbus/TCP"); mbtcp_tree = proto_item_add_subtree(mi, ett_mbtcp); + if (packet_type == CANNOT_CLASSIFY) + expert_add_info(pinfo, mi, &ei_mbtcp_cannot_classify); + /* Add items to protocol tree specific to Modbus/TCP */ proto_tree_add_uint(mbtcp_tree, hf_mbtcp_transid, tvb, offset, 2, transaction_id); proto_tree_add_uint(mbtcp_tree, hf_mbtcp_protid, tvb, offset + 2, 2, protocol_id); @@ -1556,6 +1560,13 @@ proto_register_modbus(void) }, }; + static ei_register_info mbtcp_ei[] = { + { &ei_mbtcp_cannot_classify, + { "mbtcp.cannot_classify", PI_PROTOCOL, PI_WARN, + "Cannot classify packet type. Try setting Modbus/TCP Port preference to this destination or source port", EXPFILL } + }, + }; + /* Modbus RTU header fields */ static hf_register_info mbrtu_hf[] = { { &hf_mbrtu_unitid, @@ -1898,6 +1909,7 @@ proto_register_modbus(void) module_t *mbtcp_module; module_t *mbrtu_module; module_t *modbus_module; + expert_module_t* expert_mbtcp; expert_module_t* expert_mbrtu; expert_module_t* expert_modbus; @@ -1920,6 +1932,8 @@ proto_register_modbus(void) proto_register_field_array(proto_mbrtu, mbrtu_hf, array_length(mbrtu_hf)); proto_register_field_array(proto_modbus, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); + expert_mbtcp = expert_register_protocol(proto_mbtcp); + expert_register_field_array(expert_mbtcp, mbtcp_ei, array_length(mbtcp_ei)); expert_mbrtu = expert_register_protocol(proto_mbrtu); expert_register_field_array(expert_mbrtu, mbrtu_ei, array_length(mbrtu_ei)); expert_modbus = expert_register_protocol(proto_modbus); |