bpf: export bpf_sock for BPF_PROG_TYPE_CGROUP_SOCK_ADDR prog type

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And let it use bpf_sk_storage_{get,delete} helpers to access socket
storage. Kernel context (struct bpf_sock_addr_kern) already has sk
member, so I just expose it to the BPF hooks. Using PTR_TO_SOCKET
instead of PTR_TO_SOCK_COMMON should be safe because the hook is
called on bind/connect.

Cc: Martin Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Stanislav Fomichev 2019-06-12 10:30:37 -07:00 • committed by Daniel Borkmann

parent d30bd78ce8

commit fb85c4a730

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include/uapi/linux/bpf.h

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