Hello pt is an array (uint8_t pt[16];).
pt is an array generated after processing a part of the packet.
As I've created a new tvb the offset is 0 and the length is 16.
Hope I've answered your questions.
Il giorno mer 26 mag 2021 alle ore 14:32 Roland Knall <rkn...@gmail.com> ha
scritto:
> The data displayed in the subitem is the one from pt, your data variable
> which you used to create the new tvb. The hf_item seems to point to a
> different data structure. How is pt being generated? Are you using the same
> length and start offset as for the hf item?
>
> regards
> Roland
>
> Am Mi., 26. Mai 2021 um 08:46 Uhr schrieb Antonello Tartamo <
> antonellotart...@gmail.com>:
>
>> Hello everyone,
>> I'm trying to add a custom item which is not strictly related to the
>> packet but it is coming from a processing of a part of the packet.
>> I've used the following instructions:
>>
>> new_tvb = tvb_new_child_real_data(tvb, pt, (guint)16, 16);
>> add_new_data_source(pinfo, new_tvb, "processed");
>>
>> ti = proto_tree_add_item(data_tree,
>> hf_mp_control_processed, new_tvb, 0, 16, ENC_NA);
>> PROTO_ITEM_SET_GENERATED(ti);
>>
>> hf_mp_control_processed is a set of bytes:
>> { & hf_mp_control_processed ,
>> { "mp control processed", "mp.control.processed",
>> FT_BYTES, BASE_NONE, 0x0, 0x0,
>> NULL, HFILL }
>> }
>>
>> The problem is that when I click on this new item into the Packet Details
>> I see the correct byte values, while in the Packet Bytes view these ones
>> are totally wrong.
>>
>> Attached image:
>> [image: image.png]
>> For example the first byte is 0x48 but 0x68 is shown in the Packet Bytes
>> view.
>>
>> Is there a different way to perform this operation ?
>>
>> Thanks in advance
>>
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