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,
corbet@lwn.net, 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, linux-doc@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, Roberto Sassu <roberto.sassu@huawei.com>,
Joanne Koong <joannelkoong@gmail.com>
Subject: [PATCH v13 03/10] bpf: Export bpf_dynptr_get_size()
Date: Tue, 23 Aug 2022 17:00:28 +0200 [thread overview]
Message-ID: <20220823150035.711534-4-roberto.sassu@huaweicloud.com> (raw)
In-Reply-To: <20220823150035.711534-1-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.
Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.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 39bd36359c1e..6041304b402e 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2576,6 +2576,7 @@ 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 3c1b9bbcf971..e4637ccb3016 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -1442,7 +1442,7 @@ 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:[~2022-08-23 17:26 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-23 15:00 [PATCH v13 00/10] bpf: Add kfuncs for PKCS#7 signature verification Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 01/10] bpf: Allow kfuncs to be used in LSM programs Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 02/10] btf: Handle dynamic pointer parameter in kfuncs Roberto Sassu
2022-08-26 20:36 ` Kumar Kartikeya Dwivedi
2022-08-23 15:00 ` Roberto Sassu [this message]
2022-08-27 23:33 ` [PATCH v13 03/10] bpf: Export bpf_dynptr_get_size() KP Singh
2022-08-23 15:00 ` [PATCH v13 04/10] KEYS: Move KEY_LOOKUP_ to include/linux/key.h Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 05/10] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs Roberto Sassu
2022-08-26 5:56 ` Song Liu
2022-08-26 7:21 ` Roberto Sassu
2022-08-26 7:25 ` Song Liu
2022-08-26 7:31 ` Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 06/10] bpf: Add bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 07/10] selftests/bpf: Compile kernel with everything as built-in Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 08/10] selftests/bpf: Add verifier tests for bpf_lookup_*_key() and bpf_key_put() Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 09/10] selftests/bpf: Add additional tests for bpf_lookup_*_key() Roberto Sassu
2022-08-23 15:00 ` [PATCH v13 10/10] selftests/bpf: Add test for bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-08-25 9:19 ` [PATCH v13 00/10] bpf: Add kfuncs for PKCS#7 signature verification Roberto Sassu
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