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author | Daniel Borkmann <daniel@iogearbox.net> | 2018-11-28 22:07:57 +0100 |
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committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-11-28 22:07:58 +0100 |
commit | 36dbe571c2c9ac21b964fc87f3e34206b33507ac (patch) | |
tree | c111feefec6b729f35b21583ffc2b66cfc4fbe27 /tools/testing/selftests/bpf/config | |
parent | Merge branch 'libbpf-versioning-doc' (diff) | |
parent | bpf: test_sockmap, add options for msg_pop_data() helper (diff) | |
download | linux-dev-36dbe571c2c9ac21b964fc87f3e34206b33507ac.tar.xz linux-dev-36dbe571c2c9ac21b964fc87f3e34206b33507ac.zip |
Merge branch 'bpf-sk-msg-pop-data'
John Fastabend says:
====================
After being able to add metadata to messages with sk_msg_push_data we
have also found it useful to be able to "pop" this metadata off before
sending it to applications in some cases. This series adds a new helper
sk_msg_pop_data() and the associated patches to add tests and tools/lib
support.
Thanks!
v2: Daniel caught that we missed adding sk_msg_pop_data to the changes
data helper so that the verifier ensures BPF programs revalidate
data after using this helper. Also improve documentation adding a
return description and using RST syntax per Quentin's comment. And
delta calculations for DROP with pop'd data (albeit a strange set
of operations for a program to be doing) had potential to be
incorrect possibly confusing user space applications, so fix it.
====================
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/testing/selftests/bpf/config')
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