Date: Sat, 5 Apr 2025 12:29:36 +0100 From: Lexi Winter <lexi@hemlock.eden.le-fay.org> To: freebsd-net@freebsd.org Subject: Re: bridge(4) VLAN filtering Message-ID: <Z_EUIEy9PzfpVeFq@hemlock.eden.le-fay.org> In-Reply-To: <Z_DruKHpzwEEQGJK@hemlock.eden.le-fay.org> References: <Z_ApVMypCNgruB2K@hemlock.eden.le-fay.org> <4b137357-a674-4fe3-82ea-7c1985fa0dd0@shrew.net> <Z_DruKHpzwEEQGJK@hemlock.eden.le-fay.org>
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Lexi Winter: > bridge_input() also does a second list walk in GRAB_OUR_PACKETS to find > traffic destined for the local host, which we could avoid with a sysctl > to ignore Ethernet traffic for MAC addresses other than the bridge > itself. this would break configurations where IP addresses are assigned > to bridge member interfaces, but that's always been the wrong way to > configure it, so it's not a huge loss. i tested this today and observed a 22% throughput increase on a 50-member bridge by removing this list walk. PR at https://github.com/freebsd/freebsd-src/pull/1641 (however, it's possible this breaks something else that i haven't thought of; ymmv.)
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