tools/testing/selftests/bpf/progs/test_verif_scale2.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/test_verif_scale2.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_verif_scale2.c
Extension
.c
Size
716 bytes
Lines
31
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
// Copyright (c) 2019 Facebook
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#define ATTR __always_inline
#include "test_jhash.h"

SEC("tc")
int balancer_ingress(struct __sk_buff *ctx)
{
	void *data_end = (void *)(long)ctx->data_end;
	void *data = (void *)(long)ctx->data;
	void *ptr;
	int nh_off, i = 0;

	nh_off = 14;

	/* pragma unroll doesn't work on large loops */

#define C do { \
	ptr = data + i; \
	if (ptr + nh_off > data_end) \
		break; \
	ctx->tc_index = jhash(ptr, nh_off, ctx->cb[0] + i++); \
	} while (0);
#define C30 C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;C;
	C30;C30;C30; /* 90 calls */
	return 0;
}
char _license[] SEC("license") = "GPL";

Annotation

Implementation Notes