Hi Andrew,
Based on the information I pasted below, it appears that
autonegotiation is working - the device detects that there is a link
partner connected and ethtool reports back the various link modes that
can be used. I'm not sure about the status bits - I couldn't find out
how I would check them.
The test results are as follows - I've carried out the following test
on a freshly booted system with the ethernet cable initially
unplugged:
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 70:B3:D5:BA:B8:90
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:39 Base address:0xc000
# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: Unknown!
Duplex: Unknown! (255)
Port: MII
PHYAD: 0
Transceiver: external
Auto-negotiation: on
Link detected: no
--------------------------------------------------------------------
Now the ethernet cable is plugged in and the network interface brought up:
# ifconfig eth0 up
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
# macb f802c000.ethernet eth0: link up (100/Full)
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 70:B3:D5:BA:B8:90
inet6 addr: fe80::72b3:d5ff:feba:b890%3068527384/64 Scope:Link
UP BROADCAST RUNNING 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:39 Base address:0xc000
# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric Receive-only
Link partner advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: external
Auto-negotiation: on
Link detected: yes
-------------------------------------------------
Setting a static IP
# ifconfig eth0 192.168.100.200
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 70:B3:D5:BA:B8:90
inet addr:192.168.100.200 Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::72b3:d5ff:feba:b890%3067806488/64 Scope:Link
UP BROADCAST RUNNING 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:39 Base address:0xc000
------------------------------------------------
Trying to ping and arping (I ctrl+C out of it after a while, as I do
not get any output):
# ping 192.168.100.100
PING 192.168.100.100 (192.168.100.100): 56 data bytes
^C
--- 192.168.100.100 ping statistics ---
24 packets transmitted, 0 packets received, 100% packet loss
# arping 192.168.100.100
ARPING to 192.168.100.100 from 192.168.100.200 via eth0
^CSent 19 probe(s) (19 broadcast(s))
Received 0 reply (0 request(s), 0 broadcast(s))
On 3 May 2016 at 16:36, Andrew Lunn <and...@lunn.ch> wrote:
>> Any ideas as to why I can't get any packets out? Is there a way for me
>> to test whether there is an issue between the MAC and PHY?
>
> Does it perform auto-negotiate? If it does, the PHY to the cable is
> probably O.K.
>
> Have you checked the status bits. Loopback, Power down, Isolate?
>
> Andrew
