buglwIP - A Lightweight TCP/IP stack - Bugs: bug #54865, Linkoutput gets pbufs >...

 
 

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bug #54865: Linkoutput gets pbufs > netif->mtu with IP_FRAG

Submitter:  Jonas Rabenstein <ghostav>
Submitted:  Fri 19 Oct 2018 10:23:20 AM UTC
   
 
Category:  IPv4 Severity:  3 - Normal
Item Group:  Faulty Behaviour Status:  Invalid
Privacy:  Public Assigned to:  None
Open/Closed:  Closed Planned Release:  None
lwIP version:  git head

Fri 19 Oct 2018 10:33:00 AM UTC, comment #1: 

My bad. I forgot that the Ethernet Header is not part of the MTU. Thus a length of pbuf->tot_len of MTU+14 is correct...

Jonas Rabenstein <ghostav>
Fri 19 Oct 2018 10:23:20 AM UTC, original submission:  

Hi,
I have IP_FRAG=1 defined in my lwipopts.h, but nevertheless in my linkoutput callback I get pbufs with tot_len > netif->mtu. For my understanding, IP_FRAG should ensure this condition?

Jonas Rabenstein <ghostav>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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  • -email is unavailable- added by dziegel (Updated the item)
  • -email is unavailable- added by ghostav (Submitted the item)
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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-10-19 dziegel StatusNone Invalid
        Open/ClosedOpen Closed

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