[PATCH bpf V2 2/2] bpf: selftests and tools use struct bpf_devmap_val from uapi

Jesper Dangaard Brouer
2020-06-09T13:32:26Z

Sync tools uapi bpf.h header file and update selftests that use
struct bpf_devmap_val.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
---
tools/include/uapi/linux/bpf.h | 13 +++++++++++++
.../selftests/bpf/prog_tests/xdp_devmap_attach.c | 8 --------
.../selftests/bpf/progs/test_xdp_devmap_helpers.c | 2 +-
.../bpf/progs/test_xdp_with_devmap_helpers.c | 3 +--
4 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index c65b374a5090..19684813faae 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -3761,6 +3761,19 @@ struct xdp_md {
__u32 egress_ifindex; /* txq->dev->ifindex */
};

+/* DEVMAP map-value layout
+ *
+ * The struct data-layout of map-value is a configuration interface.
+ * New members can only be added to the end of this structure.
+ */
+struct bpf_devmap_val {
+ __u32 ifindex; /* device index */
+ union {
+ int fd; /* prog fd on map write */
+ __u32 id; /* prog id on map read */
+ } bpf_prog;
+};
+
enum sk_action {
SK_DROP = 0,
SK_PASS,
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index d19dbd668f6a..88ef3ec8ac4c 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
@@ -8,14 +8,6 @@

#define IFINDEX_LO 1

-struct bpf_devmap_val {
- u32 ifindex; /* device index */
- union {
- int fd; /* prog fd on map write */
- u32 id; /* prog id on map read */
- } bpf_prog;
-};
-
void test_xdp_with_devmap_helpers(void)
{
struct test_xdp_with_devmap_helpers *skel;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
index e5c0f131c8a7..b360ba2bd441 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
@@ -2,7 +2,7 @@
/* fails to load without expected_attach_type = BPF_XDP_DEVMAP
* because of access to egress_ifindex
*/
-#include "vmlinux.h"
+#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>

SEC("xdp_dm_log")
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
index deef0e050863..330811260123 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
-
-#include "vmlinux.h"
+#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>

struct {