From: Andreas Schwab <schwab@suse.de>
To: cramerj@intel.com
Cc: netdev@oss.sgi.com
Subject: Bad UDP checksum with 82540EM
Date: Sat, 07 Feb 2004 14:35:45 +0100 [thread overview]
Message-ID: <je65ejvwpa.fsf@sykes.suse.de> (raw)
I'm getting bad UPD checksums in outgoing packets with the e1000 driver
(version 5.2.16) in 2.6.1 when using HW checksumming on a HP branded
82540EM on ia64 (TCP works fine). The same driver works fine with an
Intel branded chip. The two devices are identified as follows:
Model: "Hewlett-Packard Company 82540EM Gigabit Ethernet Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x100e "82540EM Gigabit Ethernet Controller"
SubVendor: pci 0x103c "Hewlett-Packard Company"
SubDevice: pci 0x1274
Model: "Intel 82540EM Gigabit Ethernet Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x100e "82540EM Gigabit Ethernet Controller"
SubVendor: pci 0x8086 "Intel Corporation"
SubDevice: pci 0x3402
After disabling tx-checksumming UDP is working again.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next reply other threads:[~2004-02-07 13:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-07 13:35 Andreas Schwab [this message]
2004-02-07 21:37 ` Bad UDP checksum with 82540EM Jon D Mason
2004-02-07 22:42 ` Andreas Schwab
2004-02-08 6:46 ` Andi Kleen
2004-02-08 13:09 ` Andreas Schwab
[not found] <101E0EB68A545748974019DC227C554007CBDD@orsmsx406.jf.intel.com>
2004-02-09 0:50 ` Andreas Schwab
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