[Bug 254596] if_bridge wants LRO turned off, if_vlan insists it remain on
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Date: Fri, 11 Aug 2023 22:52:00 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254596 --- Comment #14 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=5f11a33ceeb385477cb22d9ad5941061c5a26be9 commit 5f11a33ceeb385477cb22d9ad5941061c5a26be9 Author: Paul Vixie <paul@redbarn.org> AuthorDate: 2023-08-11 18:17:16 +0000 Commit: Kristof Provost <kp@FreeBSD.org> CommitDate: 2023-08-11 22:50:37 +0000 if_vlan: do not enable LRO for bridge interaces If the parent interface is not a bridge and can do LRO and checksum offloading on VLANs, then guess it may do LRO on VLANs. False positive here cost nothing, while false negative may lead to some confusions. According to Wikipedia: "LRO should not operate on machines acting as routers, as it breaks the end-to-end principle and can significantly impact performance." The same reasoning applies to machines acting as bridges. PR: 254596 MFC after: 3 weeks sys/net/if_vlan.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.