[PATCH bpf-next 1/2] netdevsim: don't accept device bound programs

[Stanislav Fomichev <sdf@google.com>]

Commit 2b3486bc2d23 ("bpf: Introduce device-bound XDP programs")
introduced device-bound programs by largely reusing existing
offloading infrastructure. This changed the semantics of
'prog->aux->offload' a bit. Now, it's non-null for both
offloaded and device-bound programs.

Instead of looking at 'prog->aux->offload' let's call
bpf_prog_is_offloaded which should be true iff the program
is offloaded and not merely device-bound.

Cc: Dipendra Khadka <kdipendra88@gmail.com>
Reported-by: syzbot+44c2416196b7c607f226@syzkaller.appspotmail.com
Fixes: 2b3486bc2d23 ("bpf: Introduce device-bound XDP programs")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
---
 drivers/net/netdevsim/bpf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/netdevsim/bpf.c b/drivers/net/netdevsim/bpf.c
index f60eb97e3a62..608953d4f98d 100644
--- a/drivers/net/netdevsim/bpf.c
+++ b/drivers/net/netdevsim/bpf.c
@@ -93,7 +93,7 @@ static void nsim_prog_set_loaded(struct bpf_prog *prog, bool loaded)
 {
 	struct nsim_bpf_bound_prog *state;
 
-	if (!prog || !prog->aux->offload)
+	if (!prog || !bpf_prog_is_offloaded(prog->aux))
 		return;
 
 	state = prog->aux->offload->dev_priv;
@@ -311,7 +311,7 @@ nsim_setup_prog_hw_checks(struct netdevsim *ns, struct netdev_bpf *bpf)
 	if (!bpf->prog)
 		return 0;
 
-	if (!bpf->prog->aux->offload) {
+	if (!bpf_prog_is_offloaded(bpf->prog->aux)) {
 		NSIM_EA(bpf->extack, "xdpoffload of non-bound program");
 		return -EINVAL;
 	}
-- 
2.42.0.869.gea05f2083d-goog