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Differential D38425

bridge: Further decompose GRAB_OUR_PACKETS
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Authored by markj on Feb 7 2023, 7:24 PM.
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ae
glebius
imp
zlei

Details

Reviewers
melifaro
kp
Group Reviewers
network
Summary

Introduce an inline function which consumes a packet known to be
destined for a particular interface. Generally, avoid introducing
macros with side effects.

Add a bridge_learn() helper instead of having the same code duplicated
into the local and forwarding cases.

Simplify some conditionals in bridge_forward().

No functional change intended.

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rG FreeBSD src repository
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Buildable 49612
Build 46502: arc lint + arc unit

Event Timeline

markj created this revision.Feb 7 2023, 7:24 PM
Herald added subscribers: glebius, ae, imp. · View Herald TranscriptFeb 7 2023, 7:24 PM
markj requested review of this revision.Feb 7 2023, 7:24 PM
Harbormaster completed remote builds in B49612: Diff 116734.Feb 7 2023, 7:24 PM
markj mentioned this in D38410: bridge: Try to make the GRAB_OUR_PACKETS macro a bit more readable.Feb 7 2023, 7:25 PM
markj added a parent revision: D38410: bridge: Try to make the GRAB_OUR_PACKETS macro a bit more readable.
markj added inline comments.Feb 7 2023, 7:32 PM
sys/net/if_bridge.c
2636

One small benefit of this approach is that we don't need to test the bridge interface type. There might be some other simplifications that are possible.

markj added reviewers: kp, network.Feb 7 2023, 8:07 PM
zlei added a subscriber: zlei.Oct 30 2023, 2:05 PM
zlei added inline comments.
sys/net/if_bridge.c
2646

I wonder if we can have a hash map lladdr -> ifp to speed up lookups for bridge which have large quantity members.

markj added a comment.Nov 2 2023, 2:57 PM

I'm not really looking at if_bridge anymore, so I'll drop this patch. If anyone wants to take it and change/improve it, please feel free.

sys/net/if_bridge.c
2646

Yes, that's probably a good idea. Even a flat array would be better than the linked list; now that the data path is protected by an epoch section, it should be pretty easy to implement resizing.

markj abandoned this revision.Jan 14 2025, 4:02 PM

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net/
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sys/net/if_bridge.c

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