Date: Tue, 12 Mar 2019 13:48:32 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 236486] [igb] txcsum produces broken checksum for I350 Gigabit Network Connection Message-ID: <bug-236486-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236486 Bug ID: 236486 Summary: [igb] txcsum produces broken checksum for I350 Gigabit Network Connection Product: Base System Version: 11.2-STABLE Hardware: amd64 OS: Any Status: New Keywords: IntelNetworking Severity: Affects Some People Priority: --- Component: kern Assignee: net@FreeBSD.org Reporter: eugen@freebsd.org Hi! The server Dell PowerEdge R640 (baseboard 0PHYDR) with BIOS Version: 1.6.13 02/13/2019 [Hetzner 1.0.2] has Intel 1GB i350 network card: igb0@pci0:1:0:0: class=3D0x020000 card=3D0x1f9a1028 chip=3D0x1521808= 6 rev=3D0x01 hdr=3D0x00 vendor =3D 'Intel Corporation' device =3D 'I350 Gigabit Network Connection' class =3D network subclass =3D ethernet It runs FreeBSD 11.2-STABLE/amd64 r344922 with GENERIC kernel config plus following options only: options KDB options KDB_UNATTENDED options KDB_TRACE options DDB options GDB It also runs ipfw nat that is not compatible with TSO4 so this option is disabled for igb0. Still, running with tso4 disabled and txcsum enabled, it suffers from stalled TCP connections due to some TCP segments being sent wi= th broken checksum occasionally. ifconfig igb0 -txcsum solves the problem. --=20 You are receiving this mail because: You are the assignee for the bug.=
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