From owner-freebsd-hardware@freebsd.org  Mon Apr 25 03:31:41 2016
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Subject: ixv device_attach: ixv0 attach returned 5 (was sr-iov issues,
 reset_hw() failed with error -100)
From: Ultima <ultima1252@gmail.com>
Cc: freebsd-current@freebsd.org, freebsd-virtualization@freebsd.org, 
 freebsd-hardware@freebsd.org
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 The sr-iov vf driver is failing to attach.


# pciconf -lv: (filtered to only relevant output)
ix0@pci0:129:0:0: class=0x020000 card=0x00001458 chip=0x15288086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Ethernet Controller 10-Gigabit X540-AT2'
    class      = network
    subclass   = ethernet
ix1@pci0:129:0:1: class=0x020000 card=0x00001458 chip=0x15288086 rev=0x01
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Ethernet Controller 10-Gigabit X540-AT2'
    class      = network
    subclass   = ethernet
none155@pci0:129:0:129: class=0x020000 card=0x00001458 chip=0x15158086
rev=0x01 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'X540 Ethernet Controller Virtual Function'
    class      = network
    subclass   = ethernet
none156@pci0:129:0:131: class=0x020000 card=0x00001458 chip=0x15158086
rev=0x01 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'X540 Ethernet Controller Virtual Function'
    class      = network
    subclass   = ethernet

# devctl attach pci0:129:0:129
devctl: Failed to attach pci0:129:0:129: Input/output error

# dmesg
ixv0: <Intel(R) PRO/10GbE Virtual Function Network Driver, Version -
1.4.6-k> at device 0.129 numa-domain 1 on pci12
ixv0: Using MSIX interrupts with 2 vectors
ixv0: ixgbe_reset_hw() failed with error -100
device_attach: ixv0 attach returned 5

# cat /etc/iovctl.conf
PF {
device : ix1;
num_vfs : 31;
}

DEFAULT {
passthrough : true;
}
VF-0 {
passthrough : false;
}
VF-1 {
passthrough : false;
}


Any ideas?

Ultima