Re: [gentoo-user] Udev 200 : dhcpcd problem + solution

[Mick]

On Monday 01 Apr 2013 02:54:08 Philip Webb wrote:
> I've spent a lot of today trying to fix a glitch in starting 'dhcpcd'
> after upgrading to  udev-200 ; I outlined it in a msg to  gentoo-dev .
>
> When I tried to start my I/net connection, I got this :
>
>   root:501 ~> dhcpcd
>     dhcpcd[831]: version 5.6.7 starting
>     ... [delay]
>     ^C
>     ... [long delay]
>     dhcpcd[831]: no interfaces have a carrier
>     dhcpcd[831]: forked to background, child pid 857
>
> So having killed it, I restarted & had no problem :
>
>   root:502 ~> dhcpcd
>     dhcpcd[866]: version 5.6.7 starting
>     dhcpcd[866]: enp5s0: sending IPv6 Router Solicitation
>     dhcpcd[866]: enp5s0: rebinding lease of 192.168.1.2
>     dhcpcd[866]: enp5s0: acknowledged 192.168.1.2 from 192.168.1.1
>     dhcpcd[866]: enp5s0: checking for 192.168.1.2
>     dhcpcd[866]: enp5s0: sending IPv6 Router Solicitation
>     dhcpcd[866]: enp5s0: leased 192.168.1.2 for 86400 seconds
>     dhcpcd[866]: forked to background, child pid 884
>
> Looking at  /var/log/syslog , I saw :
>
>   13:11:16 dhcpcd[831]: version 5.6.7 starting
>   13:12:16 klogd: r8169 0000:05:00.0: enp5s0: unable to load firmware patch
> rtl_nic/rtl8168e-3.fw (-2) 13:12:16 klogd: r8169 0000:05:00.0: enp5s0:
> link down
>   13:12:16 klogd: r8169 0000:05:00.0: enp5s0: link down
>   13:12:16 klogd: IPv6: ADDRCONF(NETDEV_UP): enp5s0: link is not ready
>   13:12:17 dhcpcd[831]: no interfaces have a carrier
>   13:12:17 dhcpcd[831]: forked to background, child pid 857
>   13:12:17 dhcpcd[857]: received SIGINT, stopping
>   13:12:17 dhcpcd[857]: enp5s0: removing interface
>   13:12:18 klogd: r8169 0000:05:00.0: enp5s0: link up
>   13:12:18 klogd: IPv6: ADDRCONF(NETDEV_CHANGE): enp5s0: link becomes ready
>   13:12:34 dhcpcd[866]: version 5.6.7 starting
>   13:12:34 dhcpcd[866]: enp5s0: sending IPv6 Router Solicitation
>   13:12:34 dhcpcd[866]: enp5s0: rebinding lease of 192.168.1.2
>   13:12:34 dhcpcd[866]: enp5s0: acknowledged 192.168.1.2 from 192.168.1.1
>   13:12:34 dhcpcd[866]: enp5s0: checking for 192.168.1.2
>   13:12:38 dhcpcd[866]: enp5s0: sending IPv6 Router Solicitation
>   13:12:39 dhcpcd[866]: enp5s0: leased 192.168.1.2 for 86400 seconds
>   13:12:39 dhcpcd[866]: forked to background, child pid 884
>
> It seems that the new set-up with the device name created by the kernel
> requires the firmware to be built into the kernel.
> This is not mentioned in the recent news item.
>
> Google led to a Gentoo Forum thread which was unusually helpful (grin):
>
>   http://forums.gentoo.org/viewtopic-t-899002-start-0.html
>
> This suggested the lines
>
>   CONFIG_PREVENT_FIRMWARE_BUILD=y  [NB this is incorrect]
>   CONFIG_FIRMWARE_IN_KERNEL=y
>   CONFIG_EXTRA_FIRMWARE="rtl8168e-2.fw"  [NB I needed '-3']
>   CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware"
>
> I was using kernel 3.5.3 , so I updated to 3.8.5 & configured it :
> I had to change the 1st line to 'n' -- mb a typo in the original msg --
> & to change  .config  manually to add '/lib/' before 'firmware',
> which 'make menuconfig' insisted on using without allowing editing.
> The compile command is
>
>   make && make firmware_install && make modules_install
>
> Once the kernel was compiled + installed & I had rebooted, I got :
>
>   root:501 ~> dhcpcd
>     dhcpcd[834]: version 5.6.7 starting
>     dhcpcd[834]: no interfaces have a carrier
>     dhcpcd[834]: forked to background, child pid 846
>
> & despite the 2nd line of output, the connection had been established.
>
> 'syslog' now reads :
>
>   dhcpcd[834]: version 5.6.7 starting
>   klogd: r8169 0000:05:00.0 enp5s0: link down
>   klogd: IPv6: ADDRCONF(NETDEV_UP): enp5s0: link is not ready
>   klogd: r8169 0000:05:00.0 enp5s0: link down
>   dhcpcd[834]: no interfaces have a carrier
>   dhcpcd[834]: forked to background, child pid 846
>   dhcpcd[846]: enp5s0: waiting for carrier
>   dhcpcd[846]: sit0: unsupported interface type 308, falling back to
> ethernet dhcpcd[846]: sit0: broadcasting for a lease
>   dhcpcd[846]: enp5s0: carrier acquired
>   klogd: r8169 0000:05:00.0 enp5s0: link up
>   klogd: IPv6: ADDRCONF(NETDEV_CHANGE): enp5s0: link becomes ready
>   dhcpcd[846]: enp5s0: sending IPv6 Router Solicitation
>   dhcpcd[846]: enp5s0: sendmsg: Cannot assign requested address
>   dhcpcd[846]: enp5s0: rebinding lease of 192.168.1.2
>   dhcpcd[846]: enp5s0: acknowledged 192.168.1.2 from 192.168.1.1
>   dhcpcd[846]: enp5s0: checking for 192.168.1.2
>   dhcpcd[846]: enp5s0: sending IPv6 Router Solicitation
>   dhcpcd[846]: enp5s0: sending IPv6 Router Solicitation
>   dhcpcd[846]: enp5s0: leased 192.168.1.2 for 86400 seconds
>
> I'm not sure what 'sit0' is, but it doesn't seem to affect the outcome.
>
> HTH others who may face the same problem.

Thanks for sharing this Philip.  I was surprised to see that firmware for NICs 
are meant to be added in this kernel config option.  I thought that this 
config option was only for the video card firmware ...

# cat /usr/src/linux/.config | grep EXTRA_FIRMWARE
CONFIG_EXTRA_FIRMWARE="radeon/R600_rlc.bin radeon/R700_rlc.bin"
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware/"

In my /lib/firmware I have:

# ls -la /lib/firmware/
total 1448
drwxr-xr-x  5 root root    4096 Sep 14  2012 .
drwxr-xr-x 14 root root   12288 Mar 31 09:26 ..
drwxr-x---  2 root root    4096 Feb  4  2012 b43
drwxr-xr-x  2 root root    4096 Sep 14  2012 intel-ucode
-rw-r--r--  1 root root 1451687 Sep 14  2012 microcode.dat
drwxr-xr-x  2 root root    4096 Dec 31 09:58 radeon

and from dmesg I can see that all of these get loaded *without* being defined 
in the CONFIG_EXTRA_FIRMWARE= ...

On this box in any case I do not have sys-kernel/linux-firmware installed, but 
have installed x11-drivers/radeon-ucode for the video card and net-
wireless/b43-fwcutter for the wireless NIC.  Are you saying that the correct 
way to go about this is to uninstall these packages and instead define the 
firmware in the kernel in CONFIG_EXTRA_FIRMWARE= ???

I'm confused.  :-/

PS. I'm currently running kernel-3.7.10-gentoo.
-- 
Regards,
Mick