On 03/14/2017 01:37, Mu Lichao wrote:
Hi,
I am trying to enable Intel 82599 10GbE SR-IOV VFs on FreeBSD 12-CURRENT, and
after enabled, the SR-IOV VFs can be seen by pciconf(1), but can not be seen by
lspci(1), which is installed from ports/sysutils/pciutils:
# pciconf -l | tail -2
ixv0@pci0:1:0:128: class=0x020000 card=0x002a1fc1 chip=0x10ed8086 rev=0x01
hdr=0x00
ixv1@pci0:1:0:130: class=0x020000 card=0x002a1fc1 chip=0x10ed8086 rev=0x01
hdr=0x00
# lspci | grep 82599
01:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
01:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
After some debugging, I found that it is because of ARI. After ARI is enabled,
the slot number is always 0 and the function number can be range between 0 and
255 when reading from /dev/pci, and this breaks lspci(1).
Is it a behavior by design or not?
It is by design. See section 6.13 of the PCIe specification. I imagine lspci
will need to be fixed.
Eric
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