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Helper function bpf_ringbuf_output

v5.8

Definition

Copyright (c) 2015 The Libbpf Authors. All rights reserved.

Copy size bytes from data into a ring buffer ringbuf. If BPF_RB_NO_WAKEUP is specified in flags, no notification of new data availability is sent. If BPF_RB_FORCE_WAKEUP is specified in flags, notification of new data availability is sent unconditionally. If 0 is specified in flags, an adaptive notification of new data availability is sent.

An adaptive notification is a notification sent whenever the user-space process has caught up and consumed all available payloads. In case the user-space process is still processing a previous payload, then no notification is needed as it will process the newly added payload automatically.

Returns

0 on success, or a negative error in case of failure.

static long (* const bpf_ringbuf_output)(void *ringbuf, void *data, __u64 size, __u64 flags) = (void *) 130;

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Program types

This helper call can be used in the following program types:

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome