linux-kernel - [PATCH 5.8 308/464] bpf: Fix bpf_ringbuf

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Message-Id: <20200817143848.552776166@linuxfoundation.org>
Date:   Mon, 17 Aug 2020 17:14:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Andrii Nakryiko <andriin@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Song Liu <songliubraving@...com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.8 308/464] bpf: Fix bpf_ringbuf_output() signature to return long

From: Andrii Nakryiko <andriin@...com>

[ Upstream commit e1613b5714ee6c186c9628e9958edf65e9d9cddd ]

Due to bpf tree fix merge, bpf_ringbuf_output() signature ended up with int as
a return type, while all other helpers got converted to returning long. So fix
it in bpf-next now.

Fixes: b0659d8a950d ("bpf: Fix definition of bpf_ringbuf_output() helper in UAPI comments")
Signed-off-by: Andrii Nakryiko <andriin@...com>
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Acked-by: Song Liu <songliubraving@...com>
Link: https://lore.kernel.org/bpf/20200727224715.652037-1-andriin@fb.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/uapi/linux/bpf.h       | 2 +-
 tools/include/uapi/linux/bpf.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 8bd33050b7bbb..a3fd55194e0b1 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -3168,7 +3168,7 @@ union bpf_attr {
  *	Return
  *		The id is returned or 0 in case the id could not be retrieved.
  *
- * int bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
+ * long bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
  * 	Description
  * 		Copy *size* bytes from *data* into a ring buffer *ringbuf*.
  * 		If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 8bd33050b7bbb..a3fd55194e0b1 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -3168,7 +3168,7 @@ union bpf_attr {
  *	Return
  *		The id is returned or 0 in case the id could not be retrieved.
  *
- * int bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
+ * long bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
  * 	Description
  * 		Copy *size* bytes from *data* into a ring buffer *ringbuf*.
  * 		If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification
-- 
2.25.1