Packet-corruption with re(4)
Peter Ankerstål
peter at pean.org
Tue Apr 29 11:38:41 UTC 2008
Hi,
Im using a built in re(4) card and it seems like its causes data-
corruption as soon as it gets some load (or after a few hours online)
The machine is running FreeBSD 7.0R:
FreeBSD ninja 7.0-RELEASE FreeBSD 7.0-RELEASE #0: Wed Apr 16 22:49:15
CEST 2008 peter at ninja:/usr/obj/usr/src/sys/NINJA amd64
(using a RELENG_7 kernel updated today)
If I download alot of files with wget or something everything works
fine for a while until the download just stalls and tcpdump reports
"bad cksum"
13:04:25.839408 IP (tos 0x0, ttl 64, id 23912, offset 0, flags [DF],
proto TCP (6), length 1500, bad cksum 0 (->f40a)!) host1.http >
host2.53895: . 115065:116513(1448) ack 1421 win 8326
<nop,nop,timestamp 2316944721 2174233192>
and so on
again and again until the connection times out.
re0: <RealTek 8168/8111B PCIe Gigabit Ethernet> port 0xb800-0xb8ff mem
0xff9ff000-0xff9fffff irq 19 at device 0.0 on pci3
re0: Using 2 MSI messages
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S/8211B media interface> PHY 1 on miibus0
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT,
1000baseT-FDX, auto
re0: Ethernet address: 00:1d:60:74:be:e3
re0: [FILTER]
re0: [FILTER]
re0 at pci0:3:0:0: class=0x020000 card=0x81aa1043 chip=0x816810ec
rev=0x01 hdr=0x00
vendor = 'Realtek Semiconductor'
device = 'RTL8168/8111 PCI-E Gigabit Ethernet NIC'
class = network
subclass = ethernet
A strange thing is that encrypted data seems to work better than
plaintext. https works for a longer time (after boot) then http for
example.
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