Intel 82545 & TSO

[Sean Bruno]

On 04/05/17 10:26, Vijay Singh wrote:
> I am running FreeBSD as a guest on ESX 5.x and see Intel device 0x100F in
> the guest. The man page for em(4) says:
> 
> " The driver supports Transmit/Receive checksum offload and Jumbo
> Frames on all but 82542-based adapters. Furthermore it supports TCP
> segmentation offload (TSO) on all adapters but those based on the
> 82543, 82544 and 82547 controller chips."
> 
> This particular device is probed by the if_lem.c driver, but I see no
> support for TSO in that file. I have verified that TSO is enabled on
> the host. What am  I missing?
> 
> em0 at pci0:2:0:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82545EM Gigabit Ethernet Controller (Copper)'
>     class      = network
>     subclass   = ethernet
> 
> ifconfig -vvvm em0
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE>
>         capabilities=9009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER,LINKSTATE>
>         ether 02:a0:98:ec:26:1d
>         media: Ethernet autoselect (1000baseT <full-duplex>)
>         status: active
>         supported media:
>                 media autoselect
>                 media 100baseTX mediaopt full-duplex
>                 media 100baseTX
>                 media 10baseT/UTP mediaopt full-duplex
>                 media 10baseT/UTP
> 
> 
> -vijay
> _______________________________________________

Just so that I'm sure, what version of FreeBSD is this from?

sean

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