patchlwIP - A Lightweight TCP/IP stack - Patches: patch #10106, tcp_in : fix ooseq update error

 
 

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patch #10106: tcp_in : fix ooseq update error

Submitted by:  Eric.Wu <duckpowermb>
Submitted on:  Thu 09 Sep 2021 12:56:49 PM UTC
 
Category:  TCP Priority:  5 - Normal
Status:  None Privacy:  Public
Assigned to:  None Open/Closed:  Open
Planned Release:  None
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Thu 09 Sep 2021 01:13:08 PM UTC, comment #1: 

i have met the same situation with BUG #56397 , after reseachig  for a few days, i found a logical bug in ooseq enqeue

original submission:

> if a pbuf received with the same seqno in ooseq ,
> we then check  the size and replace the existing one
> with the larger one,but if the existing one is the
> last segment in ooseq ,it might has been trimed before.
> the replacing action will overrun our receive windows

Eric.Wu <duckpowermb>
Thu 09 Sep 2021 12:56:49 PM UTC, original submission:  

if a pbuf received with the same seqno in ooseq ,
we then check  the size and replace the existing one
with the larger one,but if the existing one is the
last segment in ooseq ,it might has been trimed before.
the replacing action will overrun our receive windows

Eric.Wu <duckpowermb>

 

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

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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2021-09-09 duckpowermb Attached File- => Added 0001-tcp_in-fix-ooseq-update-error.patch, #51885

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