Re: em0 hijacking traffic to port 623

"Jack Vogel" wrote:
On 5/21/07, Ian FREISLICH <ianf@xxxxxxxxxx> 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
@@ -316,6 +316,7 @@
/* 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

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