netdev - [PATCH -next 3/3] netfilter: nf_tables: drop include of module.h from nf

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Date:   Mon, 15 Apr 2019 16:43:16 -0400
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     <netdev@...r.kernel.org>
CC:     Paul Gortmaker <paul.gortmaker@...driver.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        "Florian Westphal" <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        <netfilter-devel@...r.kernel.org>, <coreteam@...filter.org>
Subject: [PATCH -next 3/3] netfilter: nf_tables: drop include of module.h from nf_tables.h

Ideally, header files under include/linux shouldn't be adding
includes of other headers, in anticipation of their consumers,
but just the headers needed for the header itself to pass
parsing with CPP.

The module.h is particularly bad in this sense, as it itself does
include a whole bunch of other headers, due to the complexity of
module support.

Since nf_tables.h is not going into a module struct looking for
specific fields, we can just let it know that module is a struct,
just like about 60 other include/linux headers already do.

Cc: Pablo Neira Ayuso <pablo@...filter.org>
Cc: Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Cc: Florian Westphal <fw@...len.de>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: netfilter-devel@...r.kernel.org
Cc: coreteam@...filter.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 include/net/netfilter/nf_tables.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 706f744f7308..5b8624ae4a27 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -2,7 +2,6 @@
 #ifndef _NET_NF_TABLES_H
 #define _NET_NF_TABLES_H
 
-#include <linux/module.h>
 #include <linux/list.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter/nfnetlink.h>
@@ -13,6 +12,8 @@
 #include <net/netfilter/nf_flow_table.h>
 #include <net/netlink.h>
 
+struct module;
+
 #define NFT_JUMP_STACK_SIZE	16
 
 struct nft_pktinfo {
-- 
2.7.4