Re: setting promisc mode kills vlans on devices with hwtagging (em, re ...)

[Iasen Kostov]

Robert Watson wrote:
On Tue, 23 Nov 2004, Robert Watson wrote:
 

On Tue, 23 Nov 2004, Iasen Kostov wrote:
   

if you setup a vlan devices with parent one of emX or reX (this what I
have at the moment)  which has hardware vlan tagging just try to run
tcpdump (without -p) and the vlans will die :). That doesn't happen with
parent devices not supporting hwtagging. And this totally excludes
possibility to run a bridge over vlans with parent device which support
hwtaggs.  And something else was observed with re driver - it is
impossible to disable hwtaggs by -vlanhwtag neither you can disable vlan
mtu :).
     

I recently fixed this bug in if_em in HEAD, and will be merging that
back to RELENG_5 shortly.  We plan to also merge the change to
RELENG_5_3 as an errata patch fix.  It does not surprise me that if_re
has a similar bug;  I'll look at abstracting the solution in the next
few days. 
   

I've now merged the fix to RELENG_5 from HEAD:
 Checking in if_em.c;
 /home/ncvs/src/sys/dev/em/if_em.c,v  <--  if_em.c
 new revision: 1.44.2.4; previous revision: 1.44.2.3
 done
 Checking in if_em.h;
 /home/ncvs/src/sys/dev/em/if_em.h,v  <--  if_em.h
 new revision: 1.25.2.2; previous revision: 1.25.2.1
 done
I'll take a look at if_re shortly.
Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
[EMAIL PROTECTED]      Principal Research Scientist, McAfee Research

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   Thanks a lot. This will save me from lots of problems and now I can 
remove aliases like 'alias tcpdump="tcpdump -p"' :).
Thanks again.

   Regards.
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