Re: em0 hijacking traffic to port 623

"Jack Vogel" wrote:
> On 5/21/07, Ian FREISLICH <ianf_at_clue.co.za> wrote:
> > Looking at the new source, I'm not sure it will stop this adaptor
> > gobbling port 623.  It's a 82546EB, e1000_82546_rev_3 e1000_mac_type.
> > In em_init_manageability(), it looks like it's only disabled for
> > e1000_mac_type >= e1000_82571 which excludes this adaptor:
> >
> >                 /* enable receiving management packets to the host */
> >                 if (adapter->hw.mac.type >= e1000_82571) {
> >                         manc |= E1000_MANC_EN_MNG2HOST;
> > #define E1000_MNG2HOST_PORT_623 (1 << 5)
> > #define E1000_MNG2HOST_PORT_664 (1 << 6)
> >                         manc2h |= E1000_MNG2HOST_PORT_623;
> >                         manc2h |= E1000_MNG2HOST_PORT_664;
> >                         E1000_WRITE_REG(&adapter->hw, E1000_MANC2H, manc2h)
;
> >                 }
> >
> > I'll give the driver a whirl anyway.  If it doesn't, is it safe to write
> > 'manc |= E1000_MANC_EN_MNG2HOST' for adapter->hw.mac.type >= e1000_82546?
> 
> If you can test that would be useful.

FWIW, the new driver doesn't disable RCMP filtering on this NIC. :(

But, doing this to the new driver solves the immediate problem for me:

diff -u -d -r1.3 e1000_82540.c
--- e1000_82540.c       16 May 2007 00:14:23 -0000      1.3
+++ e1000_82540.c       22 May 2007 11:21:02 -0000
_at__at_ -316,6 +316,7 _at__at_
        /* Disable HW ARPs on ASF enabled adapters */
        manc = E1000_READ_REG(hw, E1000_MANC);
        manc &= ~E1000_MANC_ARP_EN;
+       manc &= ~(E1000_MANC_RMCP_EN | E1000_MANC_0298_EN);
        E1000_WRITE_REG(hw, E1000_MANC, manc);
 
        E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);

If you can point me to the propper place or way to effect this.  I
can see situations where someone would not want to turn this filtering
off - if they have the IPMI daughterboard on their motherboard.

Ian

--
Ian Freislich