netdev - [PATCH bpf-next v3 0/4] [PATCH bpf-next v2 0/4] Sockmap copying

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Message-Id: <20200929093039.73872-1-lmb@cloudflare.com>
Date:   Tue, 29 Sep 2020 10:30:35 +0100
From:   Lorenz Bauer <lmb@...udflare.com>
To:     kafai@...com, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     kernel-team@...udflare.com, Lorenz Bauer <lmb@...udflare.com>,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: [PATCH bpf-next v3 0/4] [PATCH bpf-next v2 0/4] Sockmap copying

Changes in v3:
- Initialize duration to 0 in selftests (Martin)

Changes in v2:
- Check sk_fullsock in map_update_elem (Martin)

Enable calling map_update_elem on sockmaps from bpf_iter context. This
in turn allows us to copy a sockmap by iterating its elements.

The change itself is tiny, all thanks to the ground work from Martin,
whose series [1] this patch is based on. I updated the tests to do some
copying, and also included two cleanups.

1: https://lore.kernel.org/bpf/20200925000337.3853598-1-kafai@fb.com/

Lorenz Bauer (4):
  bpf: sockmap: enable map_update_elem from bpf_iter
  selftests: bpf: Add helper to compare socket cookies
  selftests: bpf: remove shared header from sockmap iter test
  selftest: bpf: Test copying a sockmap and sockhash

 kernel/bpf/verifier.c                         |   2 +-
 net/core/sock_map.c                           |   3 +
 .../selftests/bpf/prog_tests/sockmap_basic.c  | 100 +++++++++++-------
 .../selftests/bpf/progs/bpf_iter_sockmap.c    |  32 ++++--
 .../selftests/bpf/progs/bpf_iter_sockmap.h    |   3 -
 5 files changed, 90 insertions(+), 50 deletions(-)
 delete mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_sockmap.h

-- 
2.25.1