This set adds bpf_sk_storage support to bpf_tcp_ca.
That will allow bpf-tcp-cc to share sk's private data with other
bpf_progs and also allow bpf-tcp-cc to use extra private
storage if the existing icsk_ca_priv is not enough.

v2:
- Move the sk_stg_map test immediately after connect() (Yonghong)
- Use global linkage var in bpf_dctcp.c (Yonghong)

Martin KaFai Lau (2):
  bpf: Add bpf_sk_storage support to bpf_tcp_ca
  bpf: Add tests for bpf_sk_storage to bpf_tcp_ca

 net/ipv4/bpf_tcp_ca.c                         | 33 ++++++++++++++++
 .../selftests/bpf/prog_tests/bpf_tcp_ca.c     | 39 +++++++++++++++----
 tools/testing/selftests/bpf/progs/bpf_dctcp.c | 16 ++++++++
 3 files changed, 80 insertions(+), 8 deletions(-)

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2.17.1