Date: Wed, 15 Dec 2021 16:15:40 +0000
From: bugzilla-noreply@freebsd.org
To: net@FreeBSD.org
Subject: [Bug 260260] igb(4) I35{0,4} parrent <--> vlan jumbo frame mtu mismatch
Message-ID: <bug-260260-7501-p9rr5rnbmD@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-260260-7501@https.bugs.freebsd.org/bugzilla/>
References: <bug-260260-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260260 --- Comment #4 from Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> --- I was told to update the PR with some em vs igb details, so TL;DR: 1. em(4) works like before with the same MTU 9000 on parent em(4), lagg(4) = and vlan(4) with the options: VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER enabled. 2. igb(4) doesn't work this way and with options: VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWFILTER,VLAN_HWTSO enab= led, the size of vlan(4) MTU has to be lowered by 4 bytes to unbreak receiving j= umbo frames. --=20 You are receiving this mail because: You are on the CC list for the bug.=
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