Re: Field with flags dissected

[Anders Broman <a.broman58 () gmail com>]

Den lör 10 aug. 2019 00:47Crawford, Anthony R <
Anthony.R.Crawford () charter com> skrev:

> Hi all,
>
> I need some help dissecting a field with its flags. I am trying to present
> the dissection of a single field with its value, then the dissected flags
> under it, presented like this:
>
>
>
> Message ID: 0x8013
>
>     10.. .... .... .... = Message Discriminator: Server and Network (2)
>
>     ..00 0000 0001 .... = Message Scenario: Session Setup (1)
>
>     .... .... .... 0011 = Message Type: Response Message (3)
>
>
>
> However it is being presented like this instead:
>
>
>
> Message ID: 0x8013, Message Discriminator: Server and Network, Message
> Scenario: Session Setup, Message Type: Response Message
>
>     10.. .... .... .... = Message Discriminator: Server and Network (2)
>
>     ..00 0000 0001 .... = Message Scenario: Session Setup (1)
>
>     .... .... .... 0011 = Message Type: Response Message (3)
>
>
>
> Anything after the 0x8013 in the same line I do not need.
>
>
>
> Here is my code:
>
>
>
> static const int *message_id_bits[] = {
>
>         &hf_dsmcc_un_sess_flag_message_discriminator,
>
>         &hf_dsmcc_un_sess_flag_message_scenario,
>
>         &hf_dsmcc_un_sess_flag_message_type
>
>     };
>
>
>
> proto_tree_add_bitmask(sub_tree, tvb, offset, hf_dsmcc_message_id,
> ett_dsmcc_message_id, message_id_bits, ENC_NA);
>
>
>
>
>
> I’ve spent the whole day trying to figure out how to present bitwise
> dissections. I haven’t been able to find the right solution despite reading
> dissection docs and other source codes.
>
>
>
>
>
> Thanks,
>
> Anthony
Isn't there a version of the function with flags to determine what to put
in the heading?
Anders

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