From: Roberto Sassu <roberto.sassu@huaweicloud.com>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
martin.lau@linux.dev, song@kernel.org, yhs@fb.com,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
haoluo@google.com, jolsa@kernel.org, mykolal@fb.com,
dhowells@redhat.com, jarkko@kernel.org, rostedt@goodmis.org,
mingo@redhat.com, paul@paul-moore.com, jmorris@namei.org,
serge@hallyn.com, shuah@kernel.org
Cc: bpf@vger.kernel.org, keyrings@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
deso@posteo.net, memxor@gmail.com,
Roberto Sassu <roberto.sassu@huawei.com>,
Joanne Koong <joannelkoong@gmail.com>
Subject: [PATCH v18 05/13] bpf: Export bpf_dynptr_get_size()
Date: Tue, 20 Sep 2022 09:59:43 +0200 [thread overview]
Message-ID: <20220920075951.929132-6-roberto.sassu@huaweicloud.com> (raw)
In-Reply-To: <20220920075951.929132-1-roberto.sassu@huaweicloud.com>
From: Roberto Sassu <roberto.sassu@huawei.com>
Export bpf_dynptr_get_size(), so that kernel code dealing with eBPF dynamic
pointers can obtain the real size of data carried by this data structure.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
include/linux/bpf.h | 1 +
kernel/bpf/helpers.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index e0dbe0c0a17e..1a877e9a06db 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2647,6 +2647,7 @@ void bpf_dynptr_init(struct bpf_dynptr_kern *ptr, void *data,
enum bpf_dynptr_type type, u32 offset, u32 size);
void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr);
int bpf_dynptr_check_size(u32 size);
+u32 bpf_dynptr_get_size(struct bpf_dynptr_kern *ptr);
#ifdef CONFIG_BPF_LSM
void bpf_cgroup_atype_get(u32 attach_btf_id, int cgroup_atype);
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index 7ce1f583b929..abaa977de262 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -1408,7 +1408,7 @@ static void bpf_dynptr_set_type(struct bpf_dynptr_kern *ptr, enum bpf_dynptr_typ
ptr->size |= type << DYNPTR_TYPE_SHIFT;
}
-static u32 bpf_dynptr_get_size(struct bpf_dynptr_kern *ptr)
+u32 bpf_dynptr_get_size(struct bpf_dynptr_kern *ptr)
{
return ptr->size & DYNPTR_SIZE_MASK;
}
--
2.25.1
next prev parent reply other threads:[~2022-09-20 8:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-20 7:59 [PATCH v18 00/13] bpf: Add kfuncs for PKCS#7 signature verification Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 01/13] bpf: Allow kfuncs to be used in LSM programs Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 02/13] btf: Export bpf_dynptr definition Roberto Sassu
2022-09-21 13:43 ` KP Singh
2022-09-20 7:59 ` [PATCH v18 03/13] bpf: Move dynptr type check to is_dynptr_type_expected() Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 04/13] btf: Allow dynamic pointer parameters in kfuncs Roberto Sassu
2022-09-20 7:59 ` Roberto Sassu [this message]
2022-09-20 7:59 ` [PATCH v18 06/13] KEYS: Move KEY_LOOKUP_ to include/linux/key.h and define KEY_LOOKUP_ALL Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 07/13] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 08/13] bpf: Add bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 09/13] selftests/bpf: Compile kernel with everything as built-in Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 10/13] selftests/bpf: Add verifier tests for bpf_lookup_*_key() and bpf_key_put() Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 11/13] selftests/bpf: Add additional tests for bpf_lookup_*_key() Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 12/13] selftests/bpf: Add test for bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-09-20 7:59 ` [PATCH v18 13/13] selftests/bpf: Add tests for dynamic pointers parameters in kfuncs Roberto Sassu
2022-09-22 1:10 ` [PATCH v18 00/13] bpf: Add kfuncs for PKCS#7 signature verification patchwork-bot+netdevbpf
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