kern/141843: [em] [vlan] Intel txcsum and assigned vlan invoke wrong dst MAC in TCP packets

[Jean-Luc Richier]

The following reply was made to PR kern/141843; it has been noted by GNATS.

From: Jean-Luc Richier <Jean-Luc.Richier at imag.fr>
To: bug-followup at FreeBSD.org, dyr at smartspb.net
Cc:  
Subject: Re: kern/141843: [em] [vlan] Intel txcsum and assigned vlan invoke
 wrong dst MAC in TCP packets
Date: Wed, 24 Feb 2010 10:35:01 +0100

 Jean-Luc Richier wrote:
 
  > A other cause (or the same) seems that when the interface is reset 
 (for example with a ifconfig em0 down, the chip is reset, but the
  > last_hw_offload in the interface context is not reset
 ....
  > I made the following path to solve the problem (in em_stop)
  > --- /sys/dev/e1000/if_em.c.DIST 2009-10-25 02:10:29.000000000 +0100
  > +++ /sys/dev/e1000/if_em.c 2010-02-23 18:22:53.000000000 +0100
 ...
  > + adapter->last_hw_offload = 0;
 ...
 
 I tested the suggested patch
 http://people.freebsd.org/~yongari/em.csum_tso.20091230.patch
 and it also solved my problem
 
 Regards
 
 -- 
 Jean-Luc RICHIER (Jean-Luc.Richier at Imag.Fr)
 Laboratoire d'Informatique de Grenoble (LIG)
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