[FS#1131] GRO patched ag71xx driver stops receiving packets

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - bolvan (bolvan) 

Attached to Project - LEDE Project
Summary - GRO patched ag71xx driver stops receiving packets
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - With this patch

https://github.com/lede-project/source/commit/13e5e473699b92f171205e0f5c57c9ebe7922492#diff-be411939e918c18669bde3700eccb764

on 2 routers : DIR-825-B2 and TL-WNR942N   after several days of usage wan ethernet port stops receiving anything until cable is unplugged and plugged back again.

I've used DIR-825-B2 and WNDR3700/3800 (same chipset) for years and have never had this kind of problems.
I monitored what's been happening to ag71xx and found this GRO patch. Both builds were from snapshots with this patch.
Fortunately It was recently reverted.
If you want to ever include it again I'd like to inform that it can cause severe problems like I described

Now i'm testing affected builds with GRO disabled.


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1131