diff options
Diffstat (limited to 'epan/dissectors/packet-mbtcp.c')
| -rw-r--r-- | epan/dissectors/packet-mbtcp.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/epan/dissectors/packet-mbtcp.c b/epan/dissectors/packet-mbtcp.c index a1b0b80ae2..a6960d2d9c 100644 --- a/epan/dissectors/packet-mbtcp.c +++ b/epan/dissectors/packet-mbtcp.c @@ -144,6 +144,7 @@ static int hf_modbus_reg16 = -1; static int hf_modbus_reg32 = -1; static int hf_mbrtu_unitid = -1; static int hf_mbrtu_crc16 = -1; +static int hf_mbrtu_crc16_status = -1; /* Initialize the subtree pointers */ static gint ett_mbtcp = -1; @@ -622,11 +623,11 @@ dissect_mbrtu_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* dat if (mbrtu_crc) { calc_crc16 = crc16_plain_tvb_offset_seed(tvb, offset, len-2, 0xFFFF); - proto_tree_add_checksum(mbrtu_tree, tvb, len-2, hf_mbrtu_crc16, -1, &ei_mbrtu_crc16_incorrect, pinfo, g_htons(calc_crc16), ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY); + proto_tree_add_checksum(mbrtu_tree, tvb, len-2, hf_mbrtu_crc16, hf_mbrtu_crc16_status, &ei_mbrtu_crc16_incorrect, pinfo, g_htons(calc_crc16), ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY); } else { - proto_tree_add_checksum(mbrtu_tree, tvb, len-2, hf_mbrtu_crc16, -1, &ei_mbrtu_crc16_incorrect, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); + proto_tree_add_checksum(mbrtu_tree, tvb, len-2, hf_mbrtu_crc16, hf_mbrtu_crc16_status, &ei_mbrtu_crc16_incorrect, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS); } /* when determining payload length, make sure to ignore the unit ID header & CRC-16 footer bytes */ @@ -1587,6 +1588,11 @@ proto_register_modbus(void) FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + { &hf_mbrtu_crc16_status, + { "CRC-16 Status", "mbrtu.crc16.status", + FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0, + NULL, HFILL } + }, }; static ei_register_info mbrtu_ei[] = { |