linux-kernel - [PATCH bpf-next v3 05/16] bpfilter: add runtime context

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Message-ID: <20221224000402.476079-6-qde@naccy.de>
Date:   Sat, 24 Dec 2022 01:03:51 +0100
From:   Quentin Deslandes <qde@...cy.de>
To:     <qde@...cy.de>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>,
        Dmitrii Banshchikov <me@...que.spb.ru>,
        <linux-kernel@...r.kernel.org>, <bpf@...r.kernel.org>,
        <linux-kselftest@...r.kernel.org>, <netdev@...r.kernel.org>,
        Kernel Team <kernel-team@...a.com>
Subject: [PATCH bpf-next v3 05/16] bpfilter: add runtime context

Create struct context to store bpfilter's runtime context. Eventually,
this structure will contain the maps/tables containing ops structures
for matches, targets, tables...

Co-developed-by: Dmitrii Banshchikov <me@...que.spb.ru>
Signed-off-by: Dmitrii Banshchikov <me@...que.spb.ru>
Signed-off-by: Quentin Deslandes <qde@...cy.de>
---
 net/bpfilter/Makefile  |  1 +
 net/bpfilter/context.c | 18 ++++++++++++++++++
 net/bpfilter/context.h | 16 ++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 net/bpfilter/context.c
 create mode 100644 net/bpfilter/context.h

diff --git a/net/bpfilter/Makefile b/net/bpfilter/Makefile
index 1b0c399c19df..9878f5fd8152 100644
--- a/net/bpfilter/Makefile
+++ b/net/bpfilter/Makefile
@@ -5,6 +5,7 @@
 
 userprogs := bpfilter_umh
 bpfilter_umh-objs := main.o logger.o map-common.o
+bpfilter_umh-objs += context.o
 userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi
 
 ifeq ($(CONFIG_BPFILTER_UMH), y)
diff --git a/net/bpfilter/context.c b/net/bpfilter/context.c
new file mode 100644
index 000000000000..fdfd5fe78424
--- /dev/null
+++ b/net/bpfilter/context.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 Telegram FZ-LLC
+ * Copyright (c) 2022 Meta Platforms, Inc. and affiliates.
+ */
+
+#define _GNU_SOURCE
+
+#include "context.h"
+
+int create_context(struct context *ctx)
+{
+	return 0;
+}
+
+void free_context(struct context *ctx)
+{
+}
diff --git a/net/bpfilter/context.h b/net/bpfilter/context.h
new file mode 100644
index 000000000000..df41b9707a81
--- /dev/null
+++ b/net/bpfilter/context.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 Telegram FZ-LLC
+ * Copyright (c) 2022 Meta Platforms, Inc. and affiliates.
+ */
+
+#ifndef NET_BPFILTER_CONTEXT_H
+#define NET_BPFILTER_CONTEXT_H
+
+struct context {
+};
+
+int create_context(struct context *ctx);
+void free_context(struct context *ctx);
+
+#endif // NET_BPFILTER_CONTEXT_H
-- 
2.38.1