[dpdk-dev] RES: hw.nic_uio.bdfs

[Fred Pedrisa <fredhps10@hotmail.com>]

Hello,

 

You did not understand the purpose of that parameter, it is made to ‘avoid’
nic_uio from pursuing the wanted NICs... so they are free to be used in the
system :)

 

Right now the code to handle it is wrong and I am trying to fix it myself.

 

De: Masaru Oki [mailto:m-oki@stratosphere.co.jp] 
Enviada em: quarta-feira, 26 de março de 2014 03:16
Para: Fred Pedrisa
Cc: dev@dpdk.org
Assunto: Re: [dpdk-dev] hw.nic_uio.bdfs

 

Hi,

I tried with Intel version 1.6.0 and FreeBSD 9.2-RELEASE on VMware Player.

kldload nic_uio by hand, works fine.
But kldunload nic_uio only detach uio driver, don't re-attach kernel driver.

[oki@ ~]$ cat /boot/loader.conf
##############################################################
###  User settings  ##########################################
##############################################################
hw.contigmem.num_buffers=64
hw.contigmem.buffer_size=2097152
hw.nic_uio.bdfs="2:5:0,2:6:0"
contigmem_load="YES"
#nic_uio_load="YES"
[oki@ ~]$ pciconf -l | egrep '(em|uio)'
em0@pci0:2:1:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01
hdr=0x00
em1@pci0:2:5:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01
hdr=0x00
em2@pci0:2:6:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01
hdr=0x00
[oki@ ~]$ kenv hw.nic_uio.bdfs
2:5:0,2:6:0
[oki@ ~]$ sudo kldload nic_uio
Password:
[oki@ ~]$ pciconf -l | egrep '(em|uio)'
em0@pci0:2:1:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01
hdr=0x00
nic_uio0@pci0:2:5:0:    class=0x020000 card=0x075015ad chip=0x100f8086
rev=0x01 hdr=0x00
nic_uio1@pci0:2:6:0:    class=0x020000 card=0x075015ad chip=0x100f8086
rev=0x01 hdr=0x00
[oki@ ~]$ sudo kldunload nic_uio
[oki@ ~]$ pciconf -l | egrep '(em|uio)'
em0@pci0:2:1:0: class=0x020000 card=0x075015ad chip=0x100f8086 rev=0x01
hdr=0x00
[oki@ ~]$

 

2014-03-26 14:35 GMT+09:00 Fred Pedrisa <fredhps10@hotmail.com>:

Hi, guys.



This variable is not working as intended for FreeBSD :(



It does not dettach nic_uio from the wanted ports :/