Pass an extra @prog parameter to bpf_struct_ops->check_member(). This will
be used in the future to verify @prog->aux->sleepable per-operation so that
a subset of operations in a struct_ops can be sleepable.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Reviewed-by: David Vernet <dvernet@xxxxxxxx>
Acked-by: Josh Don <joshdon@xxxxxxxxxx>
Acked-by: Hao Luo <haoluo@xxxxxxxxxx>
Acked-by: Barret Rhoden <brho@xxxxxxxxxx>
---
include/linux/bpf.h | 3 ++-
kernel/bpf/verifier.c | 2 +-
net/ipv4/bpf_tcp_ca.c | 3 ++-
3 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 798aec816970..82f5c30100fd 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -1337,7 +1337,8 @@ struct bpf_struct_ops {
const struct bpf_verifier_ops *verifier_ops;
int (*init)(struct btf *btf);
int (*check_member)(const struct btf_type *t,
- const struct btf_member *member);
+ const struct btf_member *member,
+ struct bpf_prog *prog);
int (*init_member)(const struct btf_type *t,
const struct btf_member *member,
void *kdata, const void *udata);
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 07c0259dfc1a..b5dba33f8e7d 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -14928,7 +14928,7 @@ static int check_struct_ops_btf_id(struct bpf_verifier_env *env)
}
if (st_ops->check_member) {
- int err = st_ops->check_member(t, member);
+ int err = st_ops->check_member(t, member, prog);
if (err) {
verbose(env, "attach to unsupported member %s of struct %s\n",
diff --git a/net/ipv4/bpf_tcp_ca.c b/net/ipv4/bpf_tcp_ca.c
index 6da16ae6a962..24c819509b98 100644
--- a/net/ipv4/bpf_tcp_ca.c
+++ b/net/ipv4/bpf_tcp_ca.c
@@ -247,7 +247,8 @@ static int bpf_tcp_ca_init_member(const struct btf_type *t,
}
static int bpf_tcp_ca_check_member(const struct btf_type *t,
- const struct btf_member *member)
+ const struct btf_member *member,
+ struct bpf_prog *prog)
{
if (is_unsupported(__btf_member_bit_offset(t, member) / 8))
return -ENOTSUPP;
--
2.38.1
