Date: Thu, 14 Apr 2016 15:35:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 208803] ixgbe(4) reports wrong IPv4 checksum when txcsum is enabled Message-ID: <bug-208803-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208803 Bug ID: 208803 Summary: ixgbe(4) reports wrong IPv4 checksum when txcsum is enabled Product: Base System Version: 10.3-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: n+freebsd@nirf.de CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org I've got Silicom 10G Ethernet cards, which use the ixgbe(4) driver. When txcsum is enabled, outgoing IPv4 packets show up in tcpdump on the sending host as having a wrong checksum. However the packets appear to be sent with the correct checksum. On the receiving host, no checksum errors are detected. I've tested this with multiple different cards (single port and dual port) on different machines. pciconf shows them as: ix0@pci0:12:0:0: class=0x020000 card=0xa05f8086 chip=0x10c78086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82598EB 10-Gigabit AF Network Connection' class = network subclass = ethernet -- You are receiving this mail because: You are the assignee for the bug.
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