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UPSTREAM: bpf: Fix definition of bpf_ringbuf_output() helper in UAPI comments

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Fix definition of bpf_ringbuf_output() in UAPI header comments, which is used
to generate libbpf's bpf_helper_defs.h header. Return value is a number (error
code), not a pointer.

Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
Change-Id: I160f1c2da80e8fb1d338c028e780242401345c53
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200615214926.3638836-1-andriin@fb.com
This commit is contained in:
Andrii Nakryiko 2020-06-15 14:49:26 -07:00 • committed by basamaryan
commit 987ac1c30f
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2 changed files with 2 additions and 2 deletions
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2
include/uapi/linux/bpf.h
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@ -3178,7 +3178,7 @@ union bpf_attr {
* Return
* The id is returned or 0 in case the id could not be retrieved.
*
* void *bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
* int 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 of

2
tools/include/uapi/linux/bpf.h
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@ -3149,7 +3149,7 @@ union bpf_attr {
* Return
* The id is returned or 0 in case the id could not be retrieved.
*
* void *bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags)
* int 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 of