Hi,
My productsolution is to usebf516 v0.2work underuClinuxenvironment. The phy device is smsc 8710. Thisproduct has been manufactured three yearsagonoattention to network issue, recently I discovereda problem withthe network.When product work for some time(perhapsa few daysora few hours), the network is very slow. The product network display:
eth0 Link encap:Ethernet HWaddr 00:05:F7:C0:0A:4C
inet addr:192.168.1.236 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:59216 errors:0 dropped:0 overruns:0 frame:0
TX packets:501 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4180523 (3.9 MiB) TX bytes:53954 (52.6 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:336 (336.0 B) TX bytes:336 (336.0 B)
PC ping the device:
chlxie@ubuntu:~$ ping 192.168.1.236
PING 192.168.1.236 (192.168.1.236) 56(84) bytes of data.
From 192.168.1.214 icmp_seq=1 Destination Host Unreachable
From 192.168.1.214 icmp_seq=2 Destination Host Unreachable
From 192.168.1.214 icmp_seq=3 Destination Host Unreachable
64 bytes from 192.168.1.236: icmp_req=4 ttl=64 time=1001 ms
64 bytes from 192.168.1.236: icmp_req=5 ttl=64 time=1.81 ms
64 bytes from 192.168.1.236: icmp_req=6 ttl=64 time=0.989 ms
64 bytes from 192.168.1.236: icmp_req=7 ttl=64 time=0.813 ms
64 bytes from 192.168.1.236: icmp_req=8 ttl=64 time=0.839 ms
64 bytes from 192.168.1.236: icmp_req=9 ttl=64 time=0.969 ms
64 bytes from 192.168.1.236: icmp_req=10 ttl=64 time=0.765 ms
64 bytes from 192.168.1.236: icmp_req=11 ttl=64 time=0.793 ms
64 bytes from 192.168.1.236: icmp_req=12 ttl=64 time=1.02 ms
64 bytes from 192.168.1.236: icmp_req=21 ttl=64 time=1.02 ms
64 bytes from 192.168.1.236: icmp_req=22 ttl=64 time=0.853 ms
64 bytes from 192.168.1.236: icmp_req=23 ttl=64 time=0.825 ms
64 bytes from 192.168.1.236: icmp_req=24 ttl=64 time=0.851 ms
64 bytes from 192.168.1.236: icmp_req=25 ttl=64 time=0.953 ms
64 bytes from 192.168.1.236: icmp_req=26 ttl=64 time=0.979 ms
64 bytes from 192.168.1.236: icmp_req=27 ttl=64 time=0.835 ms
64 bytes from 192.168.1.236: icmp_req=28 ttl=64 time=0.837 ms
64 bytes from 192.168.1.236: icmp_req=29 ttl=64 time=0.970 ms
64 bytes from 192.168.1.236: icmp_req=4 ttl=64 time=25028 ms (DUP!)
64 bytes from 192.168.1.236: icmp_req=14 ttl=64 time=15021 ms
64 bytes from 192.168.1.236: icmp_req=15 ttl=64 time=14021 ms
64 bytes from 192.168.1.236: icmp_req=16 ttl=64 time=13021 ms
64 bytes from 192.168.1.236: icmp_req=17 ttl=64 time=12021 ms
64 bytes from 192.168.1.236: icmp_req=18 ttl=64 time=11021 ms
64 bytes from 192.168.1.236: icmp_req=19 ttl=64 time=10019 ms
64 bytes from 192.168.1.236: icmp_req=20 ttl=64 time=9012 ms
Network cable is connect normal. I began tosuspect thatthere isa problem by phy 8710, I let 8710hardware reset, but the networkstill has the problem. If wantthe networkback to normal， must input "ifconfig eth0 down and ifconfig eth0 up"。 If not doing anything, wait for some hours(specific timecan not be determined),the network back to normal. I try to control the mac register, turn off the emac and turn on the emac that is not change network to fine.
linux verion is 2.6.34.7-ADI-2010R1, update to blackfin-buildroot-2013R1-RC2 is also have the same problem.
Please help me to solve the problem, thank you very much.