[PATCH v2 bpf-next 0/5] bpf: Batching iter for AF_UNIX sockets.

[Kuniyuki Iwashima <kuniyu@amazon.co.jp>]

Last year the commit afd20b9290e1 ("af_unix: Replace the big lock with
small locks.") landed on bpf-next.  Now we can use a batching algorithm
for AF_UNIX bpf iter as TCP bpf iter.


Changelog:
- Add the 1st patch.
- Call unix_get_first() in .start()/.next() to always acquire a lock in
  each iteration in the 2nd patch.


Kuniyuki Iwashima (5):
  af_unix: Refactor unix_next_socket().
  bpf: af_unix: Use batching algorithm in bpf unix iter.
  bpf: Support bpf_(get|set)sockopt() in bpf unix iter.
  selftest/bpf: Test batching and bpf_(get|set)sockopt in bpf unix iter.
  selftest/bpf: Fix a stale comment.

 net/unix/af_unix.c                            | 250 ++++++++++++++++--
 .../bpf/prog_tests/bpf_iter_setsockopt_unix.c | 100 +++++++
 .../bpf/progs/bpf_iter_setsockopt_unix.c      |  60 +++++
 .../selftests/bpf/progs/bpf_iter_unix.c       |   2 +-
 .../selftests/bpf/progs/bpf_tracing_net.h     |   2 +
 5 files changed, 385 insertions(+), 29 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt_unix.c
 create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_setsockopt_unix.c

-- 
2.30.2