Thanks for the explanation.
- <<
The result of a packet dissection is thrown away as soon as the packet has been read and presented, so if you ‘click’ on a new packet the dissection has to be redone.>>
“Thrown away” means it’s not stored anywhere. Am I right? If yes, why is it thrown away? And also, few things are done only once using
“flags.visited == FALSE”, why then this variable is used, if the previous results are not stored, then everything has to be redone.
- <<
Not sure what you are referring to here >>
In packet-rlc.c in epan/dissectors, duplicity of RLC frames is checked, should that be done everytime?
From: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of
Anders Broman
Sent: Friday, January 10, 2014 2:53 PM
To: Developer support list for Wireshark
Subject: Re: [Wireshark-dev] Siginificance of pinfo->fd->flags.visited
From: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of
Vishnu Bhatt
Sent: den 10 januari 2014 08:59
To: wireshark-dev@xxxxxxxxxxxxx
Subject: [Wireshark-dev] Siginificance of pinfo->fd->flags.visited
>Hello all,
>
>Can anyone please explain me the significance
of pinfo->fd->flags.visited. I know that this variable is set to TRUE if a packet has been visited once but if we click on the same packet then why all things are done again?
pinfo->fd->flags.visited is FALSE on the first pass when all packets are read in sequence then it’s set to FALSE. The result of a packet dissection is thrown
away as soon as the packet has been read and presented, so if you ‘click’ on a new packet the dissection has to be redone.
>
>Logically if a frame has been dissected
once, it should not be checked again, so condition “if(pinfo->fd->flags.visited == FALSE)” should always be checked before doing the dissection.
No true see above.
>Why the need of re-dissecting
>the frame over and over again?
See above.
>My second doubt is that in RLC, if duplicity
has already been checked then why to check it again? I mean should the duplicity function be covered under “if(pinfo->fd->flags.visited == FALSE)”?
Not sure what you are referring to here…
Thanks
Vishnu Bhatt
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