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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/verifier_ctx_sk_msg.c
Extension
.c
Size
6045 bytes
Lines
229
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
/* Converted from tools/testing/selftests/bpf/verifier/ctx_sk_msg.c */

#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

SEC("sk_msg")
__description("valid access family in SK_MSG")
__success
__naked void access_family_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_family]);		\
	exit;						\
"	:
	: __imm_const(sk_msg_md_family, offsetof(struct sk_msg_md, family))
	: __clobber_all);
}

SEC("sk_msg")
__description("valid access remote_ip4 in SK_MSG")
__success
__naked void remote_ip4_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip4]);	\
	exit;						\
"	:
	: __imm_const(sk_msg_md_remote_ip4, offsetof(struct sk_msg_md, remote_ip4))
	: __clobber_all);
}

SEC("sk_msg")
__description("valid access local_ip4 in SK_MSG")
__success
__naked void local_ip4_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_local_ip4]);	\
	exit;						\
"	:
	: __imm_const(sk_msg_md_local_ip4, offsetof(struct sk_msg_md, local_ip4))
	: __clobber_all);
}

SEC("sk_msg")
__description("valid access remote_port in SK_MSG")
__success
__naked void remote_port_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_port]);	\
	exit;						\
"	:
	: __imm_const(sk_msg_md_remote_port, offsetof(struct sk_msg_md, remote_port))
	: __clobber_all);
}

SEC("sk_msg")
__description("valid access local_port in SK_MSG")
__success
__naked void local_port_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_local_port]);	\
	exit;						\
"	:
	: __imm_const(sk_msg_md_local_port, offsetof(struct sk_msg_md, local_port))
	: __clobber_all);
}

SEC("sk_skb")
__description("valid access remote_ip6 in SK_MSG")
__success
__naked void remote_ip6_in_sk_msg(void)
{
	asm volatile ("					\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_0]);	\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_1]);	\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_2]);	\
	r0 = *(u32*)(r1 + %[sk_msg_md_remote_ip6_3]);	\
	exit;						\
"	:
	: __imm_const(sk_msg_md_remote_ip6_0, offsetof(struct sk_msg_md, remote_ip6[0])),
	  __imm_const(sk_msg_md_remote_ip6_1, offsetof(struct sk_msg_md, remote_ip6[1])),
	  __imm_const(sk_msg_md_remote_ip6_2, offsetof(struct sk_msg_md, remote_ip6[2])),
	  __imm_const(sk_msg_md_remote_ip6_3, offsetof(struct sk_msg_md, remote_ip6[3]))
	: __clobber_all);
}

Annotation

Implementation Notes