Date: Wed, 5 Apr 2017 09:26:31 -0700 From: Vijay Singh <vijju.singh@gmail.com> To: "freebsd-net@freebsd.org" <net@freebsd.org> Subject: Intel 82545 & TSO Message-ID: <CALCNsJQ4-ERmdH4j8zpT3t42F-1ngh5_-UB9rAt-ez9tZDDDXA@mail.gmail.com>
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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@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
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