Introduce bpf_sol_tcp_getsockopt() helper. Add bpf_getsockopt for RTO MIN and DELACK MAX. Add setsockopt/getsockopt for RTO MIN and DELACK MAX. Add corresponding selftests for bpf. v2 Link: https://lore.kernel.org/all/20250309123004.85612-1-kerneljasonxing@xxxxxxxxx/ 1. add bpf getsockopt common helper 2. target bpf-next net branch Jason Xing (6): 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 tcp: support TCP_RTO_MIN_US for set/getsockopt use tcp: support TCP_DELACK_MAX_US for set/getsockopt use selftests: add bpf_set/getsockopt() for TCP_BPF_DELACK_MAX and TCP_BPF_RTO_MIN Documentation/networking/ip-sysctl.rst | 4 +- include/net/tcp.h | 2 +- include/uapi/linux/tcp.h | 2 + net/core/filter.c | 45 ++++++++++++++----- net/ipv4/tcp.c | 32 ++++++++++++- net/ipv4/tcp_output.c | 2 +- .../selftests/bpf/progs/setget_sockopt.c | 2 + 7 files changed, 71 insertions(+), 18 deletions(-) -- 2.43.5
