lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 20 Apr 2022 15:24:52 -0700
From:   Mat Martineau <>
Cc:     Mat Martineau <>,,,,
Subject: [PATCH bpf-next 0/7] bpf: mptcp: Support for mptcp_sock and is_mptcp

Hello BPF maintainers -

I'm one of the MPTCP subsystem maintainers. We have a MPTCP mailing list
and git repo, and have so far been upstreaming all of our commits
through the net-next and net trees. This is our first patch set for

Our larger BPF-related project right now is implementing BPF-based
packet scheduling for MPTCP. One MPTCP connection may aggregate multiple
TCP "subflows", and the packet scheduler chooses which of those subflows
to use for each outgoing packet. So far we have been focusing on
BPF-based TCP congestion control code as a template.

This patch set adds BPF access to the is_mptcp flag in tcp_sock and
access to mptcp_sock structures, along with associated self tests. You
may recognize some of the code from earlier
but it has been reworked quite a bit.

Our current plan for MPTCP-related BPF patches is to continue doing
initial review on the MPTCP mailing list, and then upstream those
changes through the mailing lists to the bpf-next or bpf trees as
appropriate. This has worked well for net-next and net so far, but if
you'd prefer to handle MPTCP/BPF changes differently we can discuss
alternatives of course!



Geliang Tang (5):
  bpf: add bpf_skc_to_mptcp_sock_proto
  selftests: bpf: test bpf_skc_to_mptcp_sock
  selftests: bpf: verify token of struct mptcp_sock
  selftests: bpf: verify ca_name of struct mptcp_sock
  selftests: bpf: verify first of struct mptcp_sock

Nicolas Rybowski (2):
  bpf: expose is_mptcp flag to bpf_tcp_sock
  selftests: bpf: add MPTCP test base

 MAINTAINERS                                   |   2 +
 include/linux/btf_ids.h                       |   3 +-
 include/net/mptcp.h                           |   6 +
 include/uapi/linux/bpf.h                      |   8 +
 net/core/filter.c                             |  26 +-
 net/mptcp/Makefile                            |   4 +
 net/mptcp/bpf.c                               |  22 ++
 scripts/                            |   2 +
 tools/include/uapi/linux/bpf.h                |   8 +
 .../testing/selftests/bpf/bpf_mptcp_helpers.h |  17 ++
 tools/testing/selftests/bpf/bpf_tcp_helpers.h |   4 +
 tools/testing/selftests/bpf/config            |   1 +
 tools/testing/selftests/bpf/network_helpers.c |  43 ++-
 tools/testing/selftests/bpf/network_helpers.h |   4 +
 .../testing/selftests/bpf/prog_tests/mptcp.c  | 258 ++++++++++++++++++
 .../testing/selftests/bpf/progs/mptcp_sock.c  |  76 ++++++
 16 files changed, 474 insertions(+), 10 deletions(-)
 create mode 100644 net/mptcp/bpf.c
 create mode 100644 tools/testing/selftests/bpf/bpf_mptcp_helpers.h
 create mode 100644 tools/testing/selftests/bpf/prog_tests/mptcp.c
 create mode 100644 tools/testing/selftests/bpf/progs/mptcp_sock.c

base-commit: c7655df434de1dab1af1b1ba2aad757b15e25b83

Powered by blists - more mailing lists