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Differential D42467

if_tuntap: trigger the bpf hook on transmitting for the tap interface
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Authored by tuexen on Nov 4 2023, 4:34 PM.

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Reviewers

rscheff
kevans
rgrimes

Commits

rGf6aae554b076: if_tuntap: trigger the bpf hook on transmitting for the tap interface
rGe0f22f9e1867: if_tuntap: trigger the bpf hook on transmitting for the tap interface
rG35af22ac986c: if_tuntap: trigger the bpf hook on transmitting for the tap interface

Summary

The tun interface triggers the bpf hook when a packet is transmitted, the tap interface triggers it when the packet is read from the character device. This is inconsistent. So fix the tap device such that is behaves like the tun device. This is needed for adding support for the tap device to packetdrill.

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rG FreeBSD src repository

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Event Timeline

tuexen created this revision.Nov 4 2023, 4:34 PM

Herald added subscribers: glebius, melifaro, ae, imp. · View Herald TranscriptNov 4 2023, 4:34 PM

tuexen requested review of this revision.Nov 4 2023, 4:34 PM

tuexen added a reviewer: rgrimes.Nov 4 2023, 5:02 PM

This looks appropriate to me.

This revision is now accepted and ready to land.Nov 5 2023, 1:00 PM

kevans accepted this revision.Nov 5 2023, 3:50 PM

Closed by commit rG35af22ac986c: if_tuntap: trigger the bpf hook on transmitting for the tap interface (authored by tuexen). · Explain WhyNov 5 2023, 7:37 PM

This revision was automatically updated to reflect the committed changes.

tuexen added a commit: rG35af22ac986c: if_tuntap: trigger the bpf hook on transmitting for the tap interface.

tuexen added a commit: rGe0f22f9e1867: if_tuntap: trigger the bpf hook on transmitting for the tap interface.Jan 12 2024, 4:53 PM

tuexen added a commit: rGf6aae554b076: if_tuntap: trigger the bpf hook on transmitting for the tap interface.Jan 12 2024, 5:53 PM

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sys/

net/

15 lines

Diff 129748

sys/net/if_tuntap.c

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