netdev - [PATCH 1/4] net: add _skb

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Message-ID: <4A2541A9.1030109@gmail.com>
Date:	Tue, 02 Jun 2009 17:13:45 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"David S. Miller" <davem@...emloft.net>
CC:	Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 1/4] net: add _skb_dst opaque field

struct sk_buff uses one union to define dst and rtable fields.

We want to replace direct access to these pointers by accessors.

First patch adds a new "unsigned long _skb_dst;" opaque field
in this union.

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
---
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index aff494b..d4d7c66 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -325,6 +325,7 @@ struct sk_buff {
 	union {
 		struct  dst_entry	*dst;
 		struct  rtable		*rtable;
+		unsigned long		_skb_dst;
 	};
 #ifdef CONFIG_XFRM
 	struct	sec_path	*sp;
--
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