buglwIP - A Lightweight TCP/IP stack - Bugs: bug #33551, ARP entries may time out although...

 
 

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bug #33551: ARP entries may time out although in use

Submitted by:  Simon Goldschmidt <goldsimon>
Submitted on:  Mon 13 Jun 2011 09:22:24 AM UTC  
 
Category: ARPSeverity: 3 - Normal
Item Group: NoneStatus: Fixed
Privacy: PublicAssigned to: Simon Goldschmidt <goldsimon>
Open/Closed: ClosedPlanned Release: None
lwIP version: CVS Head

Thu 21 Jul 2011 06:36:20 PM UTC, comment #1:

Fixed by
- re-sending an ARP request if an entry is used for TX which is about to time out (1 minute before),
- re-sending ARP requests for this entry from etharp_tmr until it times out or receives an answer

I also sped up the default TX path a little. From reading my disassembled code, it should now be faster than before although code was added (I don't call find_entry() for stable entries).

Simon Goldschmidt <goldsimon>
Project AdministratorIn charge of this item.
Mon 13 Jun 2011 09:22:24 AM UTC, original submission:

Since we disabled etharp_ip_input() by default, ARP entries can time out even if they are in use by IP traffic.

To circumvent this, stable entries about to expire should be re-requested when in use through IP.

Simon Goldschmidt <goldsimon>
Project AdministratorIn charge of this item.

 

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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 21 Jul 2011 06:36:20 PM UTCgoldsimonStatusNone=>Fixed
      Assigned toNone=>goldsimon
      Open/ClosedOpen=>Closed

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