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i350 SR-IOV disabled of FreeBSD 13.0




Dear Moderator,

This is NOT a spam. This is a genuine question about an Intel i350-T4 based card. Please kindly stop marking it as a spam.


Dear Customer Support,

I'd like to enable SR-IOV on a CISCO UCS IRJ45 card (part no. 74-10521-01) with i350-T4, under FreeBSD 13.0.

lspci -lvc shows:


ecap 0010[160] = SR-IOV 1 IOV disabled, Memory Space disabled, ARI disabled

0 VFs configured out of 8 supported
First VF RID Offset 0x0180, VF RID Stride 0x0004
VF Device ID 0x1520
Page Sizes: 4096 (enabled), 8192, 65536, 262144, 1048576, 4194304


iovctl obviously fails with "Could not open device '/dev/iov/igb5': No such file or directory"

Tried both with system em driver and with the "em_updated" driver installed from ports/packages.


Any suggestions?




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Hello Attila, 

Thank you for posting in Intel Ethernet Communities. 

We noticed that you have a web portal case open with us and it is now being handled by your local support group. Based on latest update, they already received the photos of the card that you provided. Please be informed that we will be closing all the 3 threads below and we would suggest to wait for their update and continue the discussion on your web portal case to avoid duplicate and confusion.

i350-T4 SR-IOV disabled on FreeBSD 13.0

i350 SR-IOV disabled of FreeBSD 13.0

i350 sr-iov freebsd

We understand you have opened a web case with us and we will continue to help you through that channel now. We will therefore close this community case. Thank you.

Just feel free to post a new question if you may have any other inquiry in the future as this thread will no longer be monitored.

Best regards,

Crisselle C.

Intel® Customer Support

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