bpf: export bpf_sock for BPF_PROG_TYPE_SOCK_OPS 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_ops_kern) already has sk
member, so I just expose it to the BPF hooks. I use
PTR_TO_SOCKET_OR_NULL and return NULL in !is_fullsock case.

I also export bpf_tcp_sock to make it possible to access tcp socket stats.

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 10:30:38 -07:00 • committed by Daniel Borkmann

parent fb85c4a730

commit 1314ef5611

2 changed files with 27 additions and 0 deletions

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include/uapi/linux/bpf.h

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