netdev - [PATCH bpf-next v2 4/7] tools/bpf: sync kernel uapi bpf.h to tools directory

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Date:   Mon, 17 Dec 2018 11:24:58 +0100
From:   Björn Töpel <bjorn.topel@...il.com>
To:     bjorn.topel@...il.com, magnus.karlsson@...el.com,
        magnus.karlsson@...il.com, ast@...nel.org, daniel@...earbox.net,
        netdev@...r.kernel.org
Cc:     Björn Töpel <bjorn.topel@...el.com>,
        brouer@...hat.com, u9012063@...il.com, qi.z.zhang@...el.com,
        jakub.kicinski@...ronome.com, andrew@...n.ch
Subject: [PATCH bpf-next v2 4/7] tools/bpf: sync kernel uapi bpf.h to tools directory

From: Björn Töpel <bjorn.topel@...el.com>

Sync kernel uapi bpf.h "BPF_FUNC_xsk_redirect" change to the tools
directory.

Signed-off-by: Björn Töpel <bjorn.topel@...el.com>
---
 tools/include/uapi/linux/bpf.h | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index e7d57e89f25f..2568039b6265 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2319,6 +2319,17 @@ union bpf_attr {
  *		"**y**".
  *	Return
  *		0
+ *
+ * int bpf_xsk_redirect(struct xdp_buff *xdp_md)
+ *	 Description
+ *		Redirect the packet to the attached XDP socket, if any.
+ *		An XDP socket can be attached to a network interface Rx
+ *		queue by passing the XDP_ATTACH option at bind point of
+ *		the socket.
+ *
+ *	Return
+ *		**XDP_REDIRECT** if there is an XDP socket attached to the Rx
+ *		queue receiving the frame, otherwise **XDP_PASS**.
  */
 #define __BPF_FUNC_MAPPER(FN)		\
 	FN(unspec),			\
@@ -2413,7 +2424,8 @@ union bpf_attr {
 	FN(map_peek_elem),		\
 	FN(msg_push_data),		\
 	FN(msg_pop_data),		\
-	FN(rc_pointer_rel),
+	FN(rc_pointer_rel),		\
+	FN(xsk_redirect),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call
-- 
2.19.1