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authorStanislav Fomichev <[email protected]>2020-04-30 16:31:52 -0700
committerAlexei Starovoitov <[email protected]>2020-05-01 12:44:28 -0700
commitbeecf11bc2188067824591612151c4dc6ec383c7 (patch)
tree69f6fa04eedbf42c247de70bb0df443bacd42c44 /tools/perf/scripts/python/check-perf-trace.py
parent3dbb5b5040c396274a253b607289748f39a680a0 (diff)
bpf: Bpf_{g,s}etsockopt for struct bpf_sock_addr
Currently, bpf_getsockopt and bpf_setsockopt helpers operate on the 'struct bpf_sock_ops' context in BPF_PROG_TYPE_SOCK_OPS program. Let's generalize them and make them available for 'struct bpf_sock_addr'. That way, in the future, we can allow those helpers in more places. As an example, let's expose those 'struct bpf_sock_addr' based helpers to BPF_CGROUP_INET{4,6}_CONNECT hooks. That way we can override CC before the connection is made. v3: * Expose custom helpers for bpf_sock_addr context instead of doing generic bpf_sock argument (as suggested by Daniel). Even with try_socket_lock that doesn't sleep we have a problem where context sk is already locked and socket lock is non-nestable. v2: * s/BPF_PROG_TYPE_CGROUP_SOCKOPT/BPF_PROG_TYPE_SOCK_OPS/ Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
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