Re: patch: avoid wm(4) resets when adding/deleting vlan(4)

[David Young <dyoung%pobox.com@localhost>]

On Fri, Dec 03, 2010 at 05:28:40PM -0500, Thor Lancelot Simon wrote:
> On Fri, Dec 03, 2010 at 05:07:46PM -0500, der Mouse wrote:
> > > After a wm(4) is reset, it takes about 30 seconds for the NIC to get
> > > back "on net."  It's really painful.
> > 
> > Are you sure it's the wm's fault?  This sounds suspiciously like a
> 
> It's typically a combination of wm and the link partner behavior.  The
> minimum interval appears to be several seconds.

FWIW, I have my wm(4) under test plugged into a 24-port 3Com gigabit
switch, and the delay seems to be partly the fault of the switch.  When
I plug my MacBook Pro into the same switch in the morning, there is
a long delay before a DHCP lease is acquired.  My MacBook Pro uses a
Marvell chip:

Marvell Yukon Gigabit Adapter 88E8053 Singleport Copper SA:

  Name: ethernet
  Type: Ethernet Controller
  Bus:  PCI
  Vendor ID:    0x11ab
  Device ID:    0x4362
  Subsystem Vendor ID:  0x11ab
  Subsystem ID: 0x5321
  Revision ID:  0x0022
  Link Width:   x1
  BSD name:     en0
  Kext name:    AppleYukon2.kext
  Location:     
/System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/AppleYukon2.kext
  Version:      3.2.1b1

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933