[PATCH bpf-next v3 0/4] tcp: add some RTO MIN and DELACK MAX {bpf_}set/getsockopt supports

[Jason Xing <kerneljasonxing@gmail.com>]

Introduce bpf_sol_tcp_getsockopt() helper.

Add bpf_getsockopt for RTO MIN and DELACK MAX.

Add corresponding selftests for bpf.

---
v3
Link: https://lore.kernel.org/all/20250311085437.14703-1-kerneljasonxing@gmail.com/
1. Remove 2 bpf unrelated patches which will be separately submitted
after the netdev conference. So this series is consist of pure BPF
modification.
2. Fix selftests by adjusting the test/expected value because some arch
configs use HZ=100. Now those two selftests can be used from HZ=100 to
HZ=1000.

v2
Link: https://lore.kernel.org/all/20250309123004.85612-1-kerneljasonxing@gmail.com/
1. add bpf getsockopt common helper
2. target bpf-next net branch

Jason Xing (4):
  tcp: bpf: introduce bpf_sol_tcp_getsockopt to support TCP_BPF flags
  tcp: bpf: support bpf_getsockopt for TCP_BPF_RTO_MIN
  tcp: bpf: support bpf_getsockopt for TCP_BPF_DELACK_MAX
  selftests: add bpf_set/getsockopt() for TCP_BPF_DELACK_MAX and
    TCP_BPF_RTO_MIN

 net/core/filter.c                             | 45 ++++++++++++++-----
 .../selftests/bpf/progs/setget_sockopt.c      |  2 +
 2 files changed, 35 insertions(+), 12 deletions(-)

-- 
2.43.5