Entire net/core subsystem is not built without CONFIG_NET. linux/netdevice.h
just assumes that it's always there, so the easiest way to fix this is to
conditionally compile out bpf_xdp_link_attach() use in bpf/syscall.c.
Reported-by: Randy Dunlap <rdun...@infradead.org>
Fixes: aa8d3a716b59 ("bpf, xdp: Add bpf_link-based XDP attachment API")
Signed-off-by: Andrii Nakryiko <andr...@fb.com>
---
kernel/bpf/syscall.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 0e8c88db7e7a..cd3d599e9e90 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3923,9 +3923,11 @@ static int link_create(union bpf_attr *attr)
case BPF_PROG_TYPE_SK_LOOKUP:
ret = netns_bpf_link_create(attr, prog);
break;
+#ifdef CONFIG_NET
case BPF_PROG_TYPE_XDP:
ret = bpf_xdp_link_attach(attr, prog);
break;
+#endif
default:
ret = -EINVAL;
}
--
2.24.1
