diff options
author | Martin KaFai Lau <kafai@fb.com> | 2020-08-20 22:01:17 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2020-08-25 00:35:00 +0300 |
commit | ad2f8eb0095e9036724d9cf0eb6960f1e6d52d21 (patch) | |
tree | f037047269c01e554e96d3829399543e9dc36f38 /include/linux/tcp.h | |
parent | 8085e1dc1f3c885e1e9c1ef8031b3eabc1cccf25 (diff) | |
download | linux-ad2f8eb0095e9036724d9cf0eb6960f1e6d52d21.tar.xz |
bpf: selftests: Tcp header options
This patch adds tests for the new bpf tcp header option feature.
test_tcp_hdr_options.c:
- It tests header option writing and parsing in 3WHS: regular
connection establishment, fastopen, and syncookie.
- In syncookie, the passive side's bpf prog is asking the active side
to resend its bpf header option by specifying a RESEND bit in the
outgoing SYNACK. handle_active_estab() and write_nodata_opt() has
some details.
- handle_passive_estab() has comments on fastopen.
- It also has test for header writing and parsing in FIN packet.
- Most of the tests is writing an experimental option 254 with magic 0xeB9F.
- The no_exprm_estab() also tests writing a regular TCP option
without any magic.
test_misc_tcp_options.c:
- It is an one directional test. Active side writes option and
passive side parses option. The focus is to exercise
the new helpers and API.
- Testing the new helper: bpf_load_hdr_opt() and bpf_store_hdr_opt().
- Testing the bpf_getsockopt(TCP_BPF_SYN).
- Negative tests for the above helpers.
- Testing the sock_ops->skb_data.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200820190117.2886749-1-kafai@fb.com
Diffstat (limited to 'include/linux/tcp.h')
0 files changed, 0 insertions, 0 deletions