From aa0ad5b0391e268bdecf6cda31268388844f8afd Mon Sep 17 00:00:00 2001
From: Roman Gushchin <guro@fb.com>
Date: Thu, 2 Aug 2018 14:27:19 -0700
Subject: bpf: pass a pointer to a cgroup storage using pcpu variable

This commit introduces the bpf_cgroup_storage_set() helper,
which will be used to pass a pointer to a cgroup storage
to the bpf helper.

Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---
 kernel/bpf/local_storage.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'kernel/bpf/local_storage.c')

diff --git a/kernel/bpf/local_storage.c b/kernel/bpf/local_storage.c
index f23d3fdeba23..fc4e37f68f2a 100644
--- a/kernel/bpf/local_storage.c
+++ b/kernel/bpf/local_storage.c
@@ -7,6 +7,8 @@
 #include <linux/rbtree.h>
 #include <linux/slab.h>
 
+DEFINE_PER_CPU(void*, bpf_cgroup_storage);
+
 #ifdef CONFIG_CGROUP_BPF
 
 #define LOCAL_STORAGE_CREATE_FLAG_MASK					\
-- 
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