bce(4) with IPMI [puzzling and puzzling]

[David Christensen]

> Whoa ... ok, so now I've run into something horrible.
> 
> According to dmidecode, a Dell R410 has a Broadcom 5716 chipset on it.
> On Board Device 2 Information
>         Type: Ethernet
>         Status: Enabled
>         Description: Embedded Broadcom 5716 NIC 1
> On Board Device 3 Information
>         Type: Ethernet
>         Status: Enabled
>         Description: Embedded Broadcom 5716 NIC 2
> 
> 
> However, when I ask the chipset what type it is via:
>  if_bcereg.h:#define BCE_CHIP_NUM(sc)
> 
> It clearly indicates that it is a 5709???? 

Not horrible, expected.  The two chips are virtually 
indistinguishable by software except for the PCI device
ID.  The two chips differ in that BCM5709 supports
TCP/IP and iSCSI offload in Windows while the BCM5716
doesn’t.  For the FreeBSD driver that really only
means a different string is printed out, all other
code remains the same.

Dave