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contrib: more cardem dissection

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Change-Id: Ia74d3674f854b390c9745a1cb8d5756bd5d39540
This commit is contained in:
Eric Wild
2021-07-28 15:22:18 +02:00
committed by laforge
parent a755b53768
commit 23a9771467
1 changed files with 27 additions and 2 deletions
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29
contrib/simtrace.lua
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@@ -36,9 +36,29 @@ local reserved = ProtoField.uint16("usb_simtrace.reserved", "reserved", base.HE
local payloadlen = ProtoField.uint16("usb_simtrace.length", "length", base.HEX_DEC) local payloadlen = ProtoField.uint16("usb_simtrace.length", "length", base.HEX_DEC)
local payload = ProtoField.bytes("usb_simtrace.payload", "Data") local payload = ProtoField.bytes("usb_simtrace.payload", "Data")
local pb_and_rx = ProtoField.uint32("usb_simtrace.pb_and_rx", "pb_and_rx", base.HEX_DEC, NULL, 0x8)
local pb_and_tx = ProtoField.uint32("usb_simtrace.pb_and_tx", "pb_and_tx", base.HEX_DEC, NULL, 0x4)
local final = ProtoField.uint32("usb_simtrace.final", "final", base.HEX_DEC, NULL, 0x2)
local tpdu_hdr = ProtoField.uint32("usb_simtrace.tpdu_hdr", "tpdu_hdr", base.HEX_DEC, NULL, 0x1)
local rxtxdatalen = ProtoField.uint16("usb_simtrace.rxtxdatalen", "rx/tx data length", base.HEX_DEC)
local rxtxdata = ProtoField.bytes("usb_simtrace.rxtxdata", "rx/tx (data)")
usb_simtrace_protocol.fields = { usb_simtrace_protocol.fields = {
msgtype, seqnr, slotnr, reserved, payloadlen, payload msgtype, seqnr, slotnr, reserved, payloadlen, payload, pb_and_rx, pb_and_tx, final, tpdu_hdr, rxtxdatalen, rxtxdata
} }
function dissect_rxtx(payload_data,pinfo,tree)
local headerSubtree = tree:add(usb_simtrace_protocol, payload_data, "rx/tx data")
local len = payload_data(8+4,2):le_uint();
local cmd32 = payload_data(8+0,4):le_uint();
headerSubtree:add(pb_and_rx, cmd32)
headerSubtree:add(pb_and_tx, cmd32)
headerSubtree:add(final, cmd32)
headerSubtree:add(tpdu_hdr, cmd32)
headerSubtree:add(rxtxdatalen, len)
headerSubtree:add_le(rxtxdata, payload_data(8+6,len))
end
function usb_simtrace_protocol.dissector(buffer, pinfo, tree) function usb_simtrace_protocol.dissector(buffer, pinfo, tree)
length = buffer:len() length = buffer:len()
@@ -54,7 +74,12 @@ function usb_simtrace_protocol.dissector(buffer, pinfo, tree)
subtree:add(slotnr, buffer(3,1)) subtree:add(slotnr, buffer(3,1))
subtree:add_le(payloadlen, buffer(6,2)) subtree:add_le(payloadlen, buffer(6,2))
pinfo.cols.info = string.format("Cmd 0x%04X : %s", command, control_commands[command]) pinfo.cols.info = string.format("Cmd 0x%04X : %s", command, control_commands[command])
subtree:add(payload, buffer(8,length-8)) local payload_data = buffer(8,length-8)
if(command == 0x0101 or command == 0x0106) then
return dissect_rxtx(buffer(),pinfo,subtree)
else
subtree:add(payload, payload_data)
end
end end