selftests/bpf: Actuate tx_metadata_len in xdp_hw_metadata

set XDP_UMEM_TX_METADATA_LEN flag to reserve tx_metadata_len bytes of
per-chunk metadata.

Fixes: d5e726d9143c ("xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len")
Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241205044258.3155799-1-yoong.siang.song@intel.com

diff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c b/tools/testing/selftests/bpf/xdp_hw_metadata.c
index 6f9956eed797f30b9611596909ef2954654eab18..ad6c08dfd6c8cc4ed38500f89b77049f262f1c64 100644 (file)
--- a/tools/testing/selftests/bpf/xdp_hw_metadata.c
+++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c
@@ -79,7 +79,7 @@ static int open_xsk(int ifindex, struct xsk *xsk, __u32 queue_id)
                .fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
                .comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
                .frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE,
-               .flags = XSK_UMEM__DEFAULT_FLAGS,
+               .flags = XDP_UMEM_TX_METADATA_LEN,
                .tx_metadata_len = sizeof(struct xsk_tx_metadata),
        };
        __u32 idx = 0;