From: Roberto Sassu <roberto.sassu@huawei.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>,
Roberto Sassu <roberto.sassu@huawei.com>,
Joanne Koong <joannelkoong@gmail.com>
Subject: [PATCH v11 3/9] bpf: Export bpf_dynptr_get_size()
Date: Fri, 12 Aug 2022 12:18:56 +0200 [thread overview]
Message-ID: <20220812101902.2846182-4-roberto.sassu@huawei.com> (raw)
In-Reply-To: <20220812101902.2846182-1-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 a627a02cf8ab..a82f8c559ae2 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2563,6 +2563,7 @@ 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:[~2022-08-12 10:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-12 10:18 [PATCH v11 0/9] bpf: Add kfuncs for PKCS#7 signature verification Roberto Sassu
2022-08-12 10:18 ` [PATCH v11 1/9] bpf: Allow kfuncs to be used in LSM programs Roberto Sassu
2022-08-12 10:18 ` [PATCH v11 2/9] btf: Handle dynamic pointer parameter in kfuncs Roberto Sassu
2022-08-15 16:45 ` Daniel Borkmann
2022-08-12 10:18 ` Roberto Sassu [this message]
2022-08-12 10:18 ` [PATCH v11 4/9] KEYS: Move KEY_LOOKUP_ to include/linux/key.h Roberto Sassu
2022-08-12 10:18 ` [PATCH v11 5/9] bpf: Add bpf_lookup_*_key() and bpf_key_put() kfuncs Roberto Sassu
2022-08-12 10:18 ` [PATCH v11 6/9] bpf: Add bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-08-12 10:19 ` [PATCH v11 7/9] selftests/bpf: Add verifier tests for bpf_lookup_*_key() and bpf_key_put() Roberto Sassu
2022-08-12 10:19 ` [PATCH v11 8/9] selftests/bpf: Add additional tests for bpf_lookup_*_key() Roberto Sassu
2022-08-12 10:19 ` [PATCH v11 9/9] selftests/bpf: Add test for bpf_verify_pkcs7_signature() kfunc Roberto Sassu
2022-08-15 16:10 ` [PATCH v11 0/9] bpf: Add kfuncs for PKCS#7 signature verification Daniel Borkmann
2022-08-16 7:12 ` Roberto Sassu
2022-08-16 10:05 ` Daniel Borkmann
2022-08-16 12:15 ` Roberto Sassu
2022-08-16 16:39 ` Alexei Starovoitov
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