netdev - [PATCH 2/2] net: Add classid to sk

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Message-Id: <20100519.195538.139536660.davem@davemloft.net>
Date:	Wed, 19 May 2010 19:55:38 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	bmb@...enacr.com
Cc:	tgraf@...hat.com, nhorman@...driver.com, nhorman@...hat.com,
	eric.dumazet@...il.com, herbert@...dor.hengli.com.au,
	netdev@...r.kernel.org
Subject: [PATCH 2/2] net: Add classid to sk_buff.


We make this zero cost by moving queue_mapping into an existing
empty __u16 slot.  Thus making a __u32 available, which we use
for the 'classid'.

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 include/linux/skbuff.h |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 7c16f24..f847ec2 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -367,12 +367,9 @@ struct sk_buff {
 #ifdef CONFIG_NET_CLS_ACT
 	__u16			tc_verd;	/* traffic control verdict */
 #endif
+	__u32			classid;
 #endif
 
-	__u16			queue_mapping;
-
-	/* 16 bit hole */
-
 #ifdef CONFIG_NET_DMA
 	dma_cookie_t		dma_cookie;
 #endif
@@ -385,6 +382,7 @@ struct sk_buff {
 	};
 
 	__u16			vlan_tci;
+	__u16			queue_mapping;
 
 	sk_buff_data_t		transport_header;
 	sk_buff_data_t		network_header;
-- 
1.7.0.4

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