[mptcp-next,v6,00/10] use bpf_iter in bpf schedulers

Message

Geliang Tang Oct. 16, 2024, 9:33 a.m. UTC

From: Geliang Tang <[e-mail]>

v6:
 - rebased to "add mptcp_subflow bpf_iter" v10

v5:
 - patch 2, drop mptcp_sock_type and mptcp_subflow_type.
 - patch 3, revert "bpf: Export more bpf_burst related functions"
 - patch 4, merge "bpf: Export more bpf_burst related functions" into it.

v4:
 - patch 2, a new cleanup for "bpf: Add bpf_mptcp_sched_ops".
 - patch 3 should be reverted.
 - patch 8, register kfunc_set.

v3:
 - rebased.
 - put the "drop has_bytes_sent" squash-to patch into this set.

v2:
 - update bpf_rr and bpf_burst

With the newly added mptcp_subflow bpf_iter, we can get rid of the
subflows array "contexts" in struct mptcp_sched_data. This set
uses bpf_for_each(mptcp_subflow) helper to update all the bpf
schedules:

        bpf_for_each(mptcp_subflow, subflow, msk) {
                ... ...
                mptcp_subflow_set_scheduled(subflow, true);
        }

Depends on:
 - "add mptcp_subflow bpf_iter" v10

Based-on: <[e-mail]>

Geliang Tang (10):
  Revert "mptcp: add sched_data helpers"
  Squash to "bpf: Add bpf_mptcp_sched_ops"
  Squash to "bpf: Add bpf_mptcp_sched_kfunc_set"
  Squash to "selftests/bpf: Add bpf_first scheduler & test"
  Squash to "selftests/bpf: Add bpf_bkup scheduler & test"
  Squash to "selftests/bpf: Add bpf_rr scheduler & test"
  Squash to "selftests/bpf: Add bpf_red scheduler & test"
  Squash to "selftests/bpf: Add bpf_burst scheduler & test"
  mptcp: drop subflow contexts in mptcp_sched_data
  Squash to "selftests/bpf: Add bpf scheduler test" - drop
    has_bytes_sent

 include/net/mptcp.h                           |  2 -
 net/mptcp/bpf.c                               | 24 ++----
 net/mptcp/protocol.h                          |  2 -
 net/mptcp/sched.c                             | 22 ------
 .../testing/selftests/bpf/prog_tests/mptcp.c  | 48 ++++++------
 tools/testing/selftests/bpf/progs/mptcp_bpf.h |  3 -
 .../selftests/bpf/progs/mptcp_bpf_bkup.c      | 16 +---
 .../selftests/bpf/progs/mptcp_bpf_burst.c     | 77 ++++++++++---------
 .../selftests/bpf/progs/mptcp_bpf_bytes.c     | 39 ++++++++++
 .../selftests/bpf/progs/mptcp_bpf_first.c     |  8 +-
 .../selftests/bpf/progs/mptcp_bpf_red.c       |  8 +-
 .../selftests/bpf/progs/mptcp_bpf_rr.c        | 24 +++---
 12 files changed, 133 insertions(+), 140 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/mptcp_bpf_bytes.c