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bpf: Support bpf_(get|set)sockopt() in bpf unix iter.

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This patch makes bpf_(get|set)sockopt() available when iterating AF_UNIX
sockets.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Link: https://lore.kernel.org/r/20220113002849.4384-4-kuniyu@amazon.co.jp
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kuniyuki Iwashima 2022-01-13 09:28:47 +09:00 committed by Alexei Starovoitov
parent 855d8e77ff
commit eb7d8f1d9e
1 changed files with 15 additions and 0 deletions
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15
net/unix/af_unix.c
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@ -3633,6 +3633,20 @@ static const struct bpf_iter_seq_info unix_seq_info = {
.seq_priv_size = sizeof(struct bpf_unix_iter_state),
};
static const struct bpf_func_proto *
bpf_iter_unix_get_func_proto(enum bpf_func_id func_id,
const struct bpf_prog *prog)
{
switch (func_id) {
case BPF_FUNC_setsockopt:
return &bpf_sk_setsockopt_proto;
case BPF_FUNC_getsockopt:
return &bpf_sk_getsockopt_proto;
default:
return NULL;
}
}
static struct bpf_iter_reg unix_reg_info = {
.target = "unix",
.ctx_arg_info_size = 1,
@ -3640,6 +3654,7 @@ static struct bpf_iter_reg unix_reg_info = {
{ offsetof(struct bpf_iter__unix, unix_sk),
PTR_TO_BTF_ID_OR_NULL },
},
.get_func_proto = bpf_iter_unix_get_func_proto,
.seq_info = &unix_seq_info,
};