netdev - [PATCH] rtnl: Add #ifdef CONFIG_RPS around num_rx

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Date:	Fri, 20 Jul 2012 16:35:13 -0700
From:	"Mark A. Greer" <mgreer@...malcreek.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, "Mark A. Greer" <mgreer@...malcreek.com>,
	Jiri Pirko <jiri@...nulli.us>
Subject: [PATCH] rtnl: Add #ifdef CONFIG_RPS around num_rx_queues reference

From: "Mark A. Greer" <mgreer@...malcreek.com>

Commit 76ff5cc91935c51fcf1a6a99ffa28b97a6e7a884
(rtnl: allow to specify number of rx and tx queues
on device creation) added a reference to the net_device
structure's 'num_rx_queues' member in

	net/core/rtnetlink.c:rtnl_fill_ifinfo()

However, the definition for 'num_rx_queues' is surrounded
by an '#ifdef CONFIG_RPS' while the new reference to it is
not.  This causes a compile error when CONFIG_RPS is not
defined.

Fix the compile error by surrounding the new reference to
'num_rx_queues' by an '#ifdef CONFIG_RPS'.

CC: Jiri Pirko <jiri@...nulli.us>
Signed-off-by: Mark A. Greer <mgreer@...malcreek.com>
---

The problem can be easily reproduced by compiling with
davinci_all_defconfig (ARCH=arm).  I don't know this
area well enough to know whether that (and other)
defconfigs should have CONFIG_RPS enabled or not, or
whether there is some missing Kconfig logic to enable
it.

 net/core/rtnetlink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 5bb1ebc..334b930 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -892,7 +892,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 	    nla_put_u32(skb, IFLA_GROUP, dev->group) ||
 	    nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
 	    nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
+#ifdef CONFIG_RPS
 	    nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
+#endif
 	    (dev->ifindex != dev->iflink &&
 	     nla_put_u32(skb, IFLA_LINK, dev->iflink)) ||
 	    (dev->master &&
-- 
1.7.11.2

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