buglwIP - A Lightweight TCP/IP stack - Bugs: bug #3034, Implement real buffer pointer...

 
 

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bug #3034: Implement real buffer pointer field to pbuf.

Submitter:  Leon Woestenberg <likewise>
Submitted:  Tue 01 Apr 2003 12:31:48 PM UTC
   
 
Category:  pbufs Severity:  3,5
Item Group:  Feature Request Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed Planned Release:  None
lwIP version:  None

Mon 26 Mar 2007 12:38:39 PM UTC, comment #2: 

I think that PBUF_REF was probable not implemented at the time of Marc Wells's email, and it happened as a result.  Certainly sounds like his PBUF_EXT type is very similar to PBUF_REF.  I'm happy to close this as done already, but please reopen if others disagree.

Kieran Mansley <kieranm>
Group Member
Tue 06 Mar 2007 08:30:22 AM UTC, comment #1: 

This is rather old...
I'm CCing to lwip-users to get some comments.

I don't really understand why Marc Wells did it this way, instead of preallocating PBUF_POOLs and giving those to the RX-queue of the ethernet device...

I'm aware that PBUF_REFs do have some corners that are not clear to me (especially ARP queueing). But I'm not sure if we need the 'real buffer pointer'.

Any comments?

Simon Goldschmidt <goldsimon>
Group administrator
Tue 01 Apr 2003 12:31:48 PM UTC, original submission:  

In order to support referencing payload buffers in pbuf, safety checks are needed. The proposal is to follow the
ideas set out by Marc Wells in his email to the -email is unavailable- mailing list on 21-Mar-2003. URL here:
http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00085.html

Leon Woestenberg <likewise>
Group Member

 

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Carbon-Copy List
  • -email is unavailable- added by kieranm (Posted a comment)
  • -email is unavailable- added by goldsimon (Posted a comment)
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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2007-03-26 kieranm StatusNone Fixed
        Open/ClosedOpen Closed
    2007-03-06 goldsimon Carbon-Copy- Added -email is unavailable-

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