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minutes: IO Visor TSC/Dev Meeting

Brenden Blanco
 

Hi All,

Thank you for joining us on the call today. As usual, here are the notes.

-Brenden

=== Discussion ===

Yonghong:
- working on libbpf features
- working on btf support in bcc
- need to use upstream libbpf apis, in process of upstreaming/converting
- llvm support is working (9.0)

Joe:
- cilium: getting static data to be updated from elf section
- allows iproute2 to fetch 32bit values from data section
- populate instructions that refer to the data at load time
- different data sizes not yet supported/tested
- would like to incorporate global data support on the kernel side

Martin:
- bpf socket and tc socket patches posted
- what happens with sockets in timewait state?
- is there a usecase for such sockets? not at this moment, but still under
discussion

Discussion about allocating sockopt storage for bpf use cases

John:
- Discussion about ipsec integration with bpf
- bpf program to compute hash key instead of setting up ipsec rules
- currently in idea phase only

Daniel:
- cilium ipvlan support nearing completion

Brendan:
- bpftrace integration/improvements making nice progress

=== Attendees ===
Brenden Blanco
Yonghong Song
Marco Leogrande
Jesper Brouer
Joe Stringer
Mauricio Vasquez
Quentin Monnet
Daniel Borkmann
Jiong Wang
Martin Lau
Brendan Gregg
John Fastabend