linux-kernel - Re: [PATCH] Move "struct net" declaration inside the __KERNEL_

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Message-ID: <AANLkTimRSjqewc_mC5vwdXy1t4Ax5rAf5svpOTbUEF7o@mail.gmail.com>
Date:	Fri, 17 Sep 2010 14:38:59 -0500
From:	Ollie Wild <aaw@...gle.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	netdev@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>,
	David Marmaros <davem@...gle.com>
Subject: Re: [PATCH] Move "struct net" declaration inside the __KERNEL__ macro guard

(Resending with a proper signoff.)

This patch reduces namespace pollution by moving the "struct net" declaration
out of the userspace-facing portion of linux/netlink.h.  It has no impact on
the kernel, and the declaration is not referenced anywhere outside the
__KERNEL__ macro guard.

(This came up because we have several C++ applications which use "net" as a
namespace name.)

Ollie

Signed-off-by: Ollie Wild <aaw@...gle.com>

---
 include/linux/netlink.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 59d0669..1235669 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -27,8 +27,6 @@

 #define MAX_LINKS 32

-struct net;
-
 struct sockaddr_nl {
      sa_family_t     nl_family;      /* AF_NETLINK   */
      unsigned short  nl_pad;         /* zero         */
@@ -151,6 +149,8 @@ struct nlattr {
 #include <linux/capability.h>
 #include <linux/skbuff.h>

+struct net;
+
 static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb)
 {
      return (struct nlmsghdr *)skb->data;
--
1.7.0.4
--
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