[PATCH bpf-next 0/8] misc fixes for bpf_iter

[Yonghong Song <yhs@fb.com>]

Commit ae24345da54e ("bpf: Implement an interface to register
bpf_iter targets") and its subsequent commits in the same patch set
introduced bpf iterator, a way to run bpf program when iterating
kernel data structures.

This patch set addressed some followup issues. One big change
is to allow target to pass ctx arg register types to verifier
for verification purpose. Please see individual patch for details.

Yonghong Song (8):
  tools/bpf: selftests : explain bpf_iter test failures with llvm 10.0.0
  bpf: change btf_iter func proto prefix to "bpf_iter_"
  bpf: add comments to interpret bpf_prog return values
  bpf: add WARN_ONCE if bpf_seq_read show() return a positive number
  bpf: net: refactor bpf_iter target registration
  bpf: change func bpf_iter_unreg_target() signature
  bpf: enable bpf_iter targets registering ctx argument types
  samples/bpf: remove compiler warnings

 include/linux/bpf.h                    | 20 +++++++++---
 include/net/ip6_fib.h                  |  7 ++++
 kernel/bpf/bpf_iter.c                  | 44 +++++++++++++++-----------
 kernel/bpf/btf.c                       | 15 ++++++---
 kernel/bpf/map_iter.c                  | 23 ++++++++------
 kernel/bpf/task_iter.c                 | 42 ++++++++++++++++--------
 kernel/bpf/verifier.c                  |  1 -
 net/ipv6/ip6_fib.c                     |  5 ---
 net/ipv6/route.c                       | 25 +++++++++------
 net/netlink/af_netlink.c               | 23 ++++++++------
 samples/bpf/offwaketime_kern.c         |  4 +--
 samples/bpf/sockex2_kern.c             |  4 +--
 samples/bpf/sockex3_kern.c             |  4 +--
 tools/lib/bpf/libbpf.c                 |  2 +-
 tools/testing/selftests/bpf/README.rst | 43 +++++++++++++++++++++++++
 15 files changed, 178 insertions(+), 84 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/README.rst

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2.24.1