Hi,
I have a PC with an integrate re ethernet interface, pciconf identifies
it like this:
re0@pci0:3:0:0: class=0x020000 card=0x11c01734 chip=0x816810ec rev=0x07
hdr=0x00
I'm running FreeBSD current r252261.
As stated in the subject after boot the interface does not work correctly.
Using tcpdump on another host I noticed that packets (ICMP echo requests
for example) do get sent, and replies generated by the other host, but
the kernel does not seem to see them. Except that every now and then
some packet does get to the system.
I'm seeing packet 7, 27, 47, 66, 86, 106, 125, 144, 164, 183 and so on
from a ping which has been running for some time. Just about one every
twenty. Some pattern is showing up.
this is the output of ifconfig re0 after boot:
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
ether 00:19:99:f8:d3:0b
inet 172.24.42.13 netmask 0xffffff00 broadcast 172.24.42.255
inet6 fe80::219:99ff:fef8:d30b%re0 prefixlen 64 scopeid 0x2
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
If I just touch any interface flag with ifconfig, anyone, tso, -txcsum
-rxcsum, it starts working flawlessly. It keeps working also if I
perform the opposite operation with ifconfig afterwards, so it is not
the flag itself fixing it.
This is an ifconfig after performing this exercise(it's the same, since
I disabled txcsum and reactivated it in this instance):
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
ether 00:19:99:f8:d3:0b
inet 172.24.42.13 netmask 0xffffff00 broadcast 172.24.42.255
inet6 fe80::219:99ff:fef8:d30b%re0 prefixlen 64 scopeid 0x2
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
I don't know much about FreeBSD network drivers so i can't make theories
about this. I hope someone has an idea what the problem could be.
I'm available for any further information needed, test, experiment and
so on.
Thanks in advance!
--
Guido Falsi <m...@madpilot.net>
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