From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out30-131.freemail.mail.aliyun.com (out30-131.freemail.mail.aliyun.com [115.124.30.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B04FA1DFF7; Mon, 3 Nov 2025 07:31:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762155096; cv=none; b=ViTUTxtKFLSByNiamS9GPs6gqJVc8clvuGYE1T/MPcxSuXLn6UZCLPeUWiGKR31zG60CnAYz69nVoA2jZwa8u2JrhoBIxg4TAmZXSY/d15o6eog2k1uBfzv5ytZWMqJygG526whwFWfnJMfksbCgqjP382KWg1lB7W2501hwS2U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762155096; c=relaxed/simple; bh=TDyFl4b9bo6o/8uZ8pTHmIrqEqQv0nieqbOKW1nS4ZE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qw5jt9wem14LRAdbqQek31UhZj4MhH35baj71vPdThZjomI3LHZK87VkW7ezZEubJA2v9SVCxb2tnvH82CgYdSD04OTrUFKqwCme/YrMSqaM43OsL11OKKJtUyF8m7DqbpKuKNDBu6SMTAgTZmX2RLcAwliUKs2she9g5Q9jTco= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=ORKnoyz1; arc=none smtp.client-ip=115.124.30.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="ORKnoyz1" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1762155091; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=yu5fYthbs4VPGz0AGcEiQL+FtskjXzgmIaJS+iAS9x0=; b=ORKnoyz18JksUCGCYEwUe6+WLwZUBqxjf2BXeDf6m8vBLa/Hk+DqANA37aR1lVlcIav7xEy7O5TSl0tK9g1uVTXza2MC+d0782crylfSts+lD2Qa+9sg/a2nPPBb/Bc5808AHTFpjrOmH2Ld4ZfzW8KlCuTgvzjYR7P3SzttN6A= Received: from j66a10360.sqa.eu95.tbsite.net(mailfrom:alibuda@linux.alibaba.com fp:SMTPD_---0WrYjrxb_1762155088 cluster:ay36) by smtp.aliyun-inc.com; Mon, 03 Nov 2025 15:31:29 +0800 From: "D. Wythe" To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, pabeni@redhat.com, song@kernel.org, sdf@google.com, haoluo@google.com, yhs@fb.com, edumazet@google.com, john.fastabend@gmail.com, kpsingh@kernel.org, jolsa@kernel.org, mjambigi@linux.ibm.com, wenjia@linux.ibm.com, wintera@linux.ibm.com, dust.li@linux.alibaba.com, tonylu@linux.alibaba.com, guwen@linux.alibaba.com Cc: bpf@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, sidraya@linux.ibm.com, jaka@linux.ibm.com Subject: [PATCH bpf-next v4 1/3] bpf: export necessary symbols for modules with struct_ops Date: Mon, 3 Nov 2025 15:31:22 +0800 Message-ID: <20251103073124.43077-2-alibuda@linux.alibaba.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20251103073124.43077-1-alibuda@linux.alibaba.com> References: <20251103073124.43077-1-alibuda@linux.alibaba.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Exports three necessary symbols for implementing struct_ops with tristate subsystem. To hold or release refcnt of struct_ops refcnt by inline funcs bpf_try_module_get and bpf_module_put which use bpf_struct_ops_get(put) conditionally. And to copy obj name from one to the other with effective checks by bpf_obj_name_cpy. Signed-off-by: D. Wythe --- kernel/bpf/bpf_struct_ops.c | 2 ++ kernel/bpf/syscall.c | 1 + 2 files changed, 3 insertions(+) diff --git a/kernel/bpf/bpf_struct_ops.c b/kernel/bpf/bpf_struct_ops.c index a41e6730edcf..278490683d28 100644 --- a/kernel/bpf/bpf_struct_ops.c +++ b/kernel/bpf/bpf_struct_ops.c @@ -1162,6 +1162,7 @@ bool bpf_struct_ops_get(const void *kdata) map = __bpf_map_inc_not_zero(&st_map->map, false); return !IS_ERR(map); } +EXPORT_SYMBOL_GPL(bpf_struct_ops_get); void bpf_struct_ops_put(const void *kdata) { @@ -1173,6 +1174,7 @@ void bpf_struct_ops_put(const void *kdata) bpf_map_put(&st_map->map); } +EXPORT_SYMBOL_GPL(bpf_struct_ops_put); u32 bpf_struct_ops_id(const void *kdata) { diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 8a129746bd6c..80b86e9d3c39 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1234,6 +1234,7 @@ int bpf_obj_name_cpy(char *dst, const char *src, unsigned int size) return src - orig_src; } +EXPORT_SYMBOL_GPL(bpf_obj_name_cpy); int map_check_no_btf(const struct bpf_map *map, const struct btf *btf, -- 2.45.0