NICがIPを取らなくなった

bbb

BagleBone BlackのNICが上がらなくなった。


ifconfigしてみても取っている様子がない。

root@beaglebone:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 90:59:AF:5C:4D:B5
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:56

dmesgにもそれらしいログはない。
systemdのせいでもないようだ。

root@beaglebone:~# systemctl status network
network.service
          Loaded: error (Reason: No such file or directory)
          Active: inactive (dead)

リブートしてみてもかわらない。
NICが生きてない。


シリアルコンソールをつなげてみた。

[   15.713063] libphy: PHY 4a101000.mdio:00 not found
[   15.718148] net eth0: phy 4a101000.mdio:00 not found on slave 0
[   15.724381] libphy: PHY 4a101000.mdio:01 not found
[   15.729397] net eth0: phy 4a101000.mdio:01 not found on slave 1

なにこれ〜。

PHYのリセットに失敗した？
ubootのレベルでresetしてみる。

U-Boot 2013.04-dirty (Jun 19 2013 - 09:57:14)

I2C:   ready
DRAM:  512 MiB
WARNING: Caches not enabled
NAND:  No NAND device found!!!
0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net:   <ethaddr> not set. Validating first E-fuse MAC
Phy not found
PHY reset timed out
cpsw, usb_ether
Hit any key to stop autoboot:  0
U-Boot#

MACアドレスが飛んだかな？
ubootレベルでリセットしてみる。

U-Boot# reset
resetting ...

U-Boot SPL 2013.04-dirty (Jun 19 2013 - 09:57:14)
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
OMAP SD/MMC: 0
mmc_send_cmd : timeout: No status update
reading u-boot.img
reading u-boot.img


U-Boot 2013.04-dirty (Jun 19 2013 - 09:57:14)

I2C:   ready
DRAM:  512 MiB
WARNING: Caches not enabled
NAND:  No NAND device found!!!
0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
Net:   <ethaddr> not set. Validating first E-fuse MAC
Phy not found
PHY reset timed out
cpsw, usb_ether
Hit any key to stop autoboot:  0
U-Boot#

ダメだな。


どうやら、いくつか報告がある事象のようだ。
Beaglebone black Ethernet instability: libphy: Link is Down
https://groups.google.com/forum/#!msg/beagleboard/Vp4pxwHm8BU/Iaw3p5xm0MoJ
Re: BeagleBone Black: Ethernet transmits packets but does not receive them - msg#01878
http://osdir.com/ml/beagleboard/2013-07/msg01878.html
BeagleBone ethernet troubles libphy
http://archlinuxarm.org/forum/viewtopic.php?f=28&t=5515

kernel/drivers/net/phy/libphy.ko.gz これ？

root@beaglebone:~# find / | grep libphy.ko
root@beaglebone:~# find / | grep libphy

なさげ。

root@beaglebone:~# find /etc/systemd | grep netctl
root@beaglebone:~# find /etc/ | grep netctl

/etc/systemd/system/networking.service
/etc/systemd/system/busybox-udhcpc.service

root@beaglebone:~# systemctl status busybox-udhcpc
busybox-udhcpc.service
          Loaded: masked (/dev/null)
          Active: inactive (dead)

root@beaglebone:~# systemctl status networking
networking.service
          Loaded: masked (/dev/null)
          Active: inactive (dead)

root@beaglebone:~# ifup eth0
ifup: can't open '/etc/network/interfaces': No such file or directory

root@beaglebone:~# systemctl start networking
Failed to issue method call: Unit networking.service is masked.
root@beaglebone:~# cat /etc/systemd/system/networking.service

なんにもない...

root@beaglebone:~# cat /etc/systemd/system/busybox-udhcpc.service

これもなんにもない。
ファイル消えたってことかな？
それともなくて普通？(普通みたい)

root@beaglebone:~# systemctl enable netctl-ifplugd@eth0
Failed to issue method call: No such file or directory

でも、MACアドレスついてはいるんだよな。

root@beaglebone:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 90:59:AF:5C:4D:B5
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:56


HUBをリセットして、コールドブートしたら動くようになった。

root@beaglebone:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 90:59:AF:5C:4D:B5
          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::9259:afff:fe5c:4db5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
          TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2423 (2.3 KiB)  TX bytes:9537 (9.3 KiB)
          Interrupt:56

HUBの調子悪かっただけか。