From a89e519b40f6b1dedbe58f5ed07340e1c1c9effc Mon Sep 17 00:00:00 2001
From: Stanislav Fomichev <sdf@fomichev.me>
Date: Fri, 12 Jul 2024 18:52:52 -0700
Subject: [PATCH] selftests/bpf: Add XDP_UMEM_TX_METADATA_LEN to XSK TX
 metadata test

This flag is now required to use tx_metadata_len.

Fixes: 40808a237d9c ("selftests/bpf: Add TX side to xdp_metadata")
Reported-by: Julian Schindel <mail@arctic-alpaca.de>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20240713015253.121248-3-sdf@fomichev.me
---
 include/uapi/linux/if_xdp.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/uapi/linux/if_xdp.h b/include/uapi/linux/if_xdp.h
index 638c606..2f082b0 100644
--- a/include/uapi/linux/if_xdp.h
+++ b/include/uapi/linux/if_xdp.h
@@ -41,6 +41,10 @@
  */
 #define XDP_UMEM_TX_SW_CSUM		(1 << 1)
 
+/* Request to reserve tx_metadata_len bytes of per-chunk metadata.
+ */
+#define XDP_UMEM_TX_METADATA_LEN	(1 << 2)
+
 struct sockaddr_xdp {
 	__u16 sxdp_family;
 	__u16 sxdp_flags;