tools/testing/selftests/bpf/progs/tcp_ca_incompl_cong_ops.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/tcp_ca_incompl_cong_ops.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/tcp_ca_incompl_cong_ops.c
Extension
.c
Size
687 bytes
Lines
30
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0

#include "bpf_tracing_net.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>

char _license[] SEC("license") = "GPL";

SEC("struct_ops")
__u32 BPF_PROG(incompl_cong_ops_ssthresh, struct sock *sk)
{
	return tcp_sk(sk)->snd_ssthresh;
}

SEC("struct_ops")
__u32 BPF_PROG(incompl_cong_ops_undo_cwnd, struct sock *sk)
{
	return tcp_sk(sk)->snd_cwnd;
}

SEC(".struct_ops")
struct tcp_congestion_ops incompl_cong_ops = {
	/* Intentionally leaving out any of the required cong_avoid() and
	 * cong_control() here.
	 */
	.ssthresh = (void *)incompl_cong_ops_ssthresh,
	.undo_cwnd = (void *)incompl_cong_ops_undo_cwnd,
	.name = "bpf_incompl_ops",
};

Annotation

Implementation Notes