netdev - [PATCH] xen: netfront: fix declaration order

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Date:	Sun, 03 Apr 2011 13:07:19 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	mirq-linux@...e.qmqm.pl, netdev@...r.kernel.org,
	jeremy.fitzhardinge@...rix.com, konrad.wilk@...cle.com,
	Ian.Campbell@...rix.com, xen-devel@...ts.xensource.com,
	virtualization@...ts.linux-foundation.org
Subject: [PATCH] xen: netfront: fix declaration order

Le vendredi 01 avril 2011 à 20:54 -0700, David Miller a écrit :
> From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
> Date: Thu, 31 Mar 2011 13:01:35 +0200 (CEST)
> 
> > Not tested in any way. The original code for offload setting seems broken
> > as it resets the features on every netback reconnect.
> > 
> > This will set GSO_ROBUST at device creation time (earlier than connect time).
> > 
> > RX checksum offload is forced on - so advertise as it is.
> > 
> > Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
> 
> Applied.

Hmm... I had to apply following patch to make it actually compile.

Thanks

[PATCH] xen: netfront: fix declaration order

Must declare xennet_fix_features() and xennet_set_features() before
using them.

Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
Cc: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
 drivers/net/xen-netfront.c |   72 +++++++++++++++++------------------
 1 file changed, 36 insertions(+), 36 deletions(-)

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index f6e7e27..0cfe4cc 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1140,6 +1140,42 @@ static void xennet_uninit(struct net_device *dev)
 	gnttab_free_grant_references(np->gref_rx_head);
 }
 
+static u32 xennet_fix_features(struct net_device *dev, u32 features)
+{
+	struct netfront_info *np = netdev_priv(dev);
+	int val;
+
+	if (features & NETIF_F_SG) {
+		if (xenbus_scanf(XBT_NIL, np->xbdev->otherend, "feature-sg",
+				 "%d", &val) < 0)
+			val = 0;
+
+		if (!val)
+			features &= ~NETIF_F_SG;
+	}
+
+	if (features & NETIF_F_TSO) {
+		if (xenbus_scanf(XBT_NIL, np->xbdev->otherend,
+				 "feature-gso-tcpv4", "%d", &val) < 0)
+			val = 0;
+
+		if (!val)
+			features &= ~NETIF_F_TSO;
+	}
+
+	return features;
+}
+
+static int xennet_set_features(struct net_device *dev, u32 features)
+{
+	if (!(features & NETIF_F_SG) && dev->mtu > ETH_DATA_LEN) {
+		netdev_info(dev, "Reducing MTU because no SG offload");
+		dev->mtu = ETH_DATA_LEN;
+	}
+
+	return 0;
+}
+
 static const struct net_device_ops xennet_netdev_ops = {
 	.ndo_open            = xennet_open,
 	.ndo_uninit          = xennet_uninit,
@@ -1513,42 +1549,6 @@ again:
 	return err;
 }
 
-static u32 xennet_fix_features(struct net_device *dev, u32 features)
-{
-	struct netfront_info *np = netdev_priv(dev);
-	int val;
-
-	if (features & NETIF_F_SG) {
-		if (xenbus_scanf(XBT_NIL, np->xbdev->otherend, "feature-sg",
-				 "%d", &val) < 0)
-			val = 0;
-
-		if (!val)
-			features &= ~NETIF_F_SG;
-	}
-
-	if (features & NETIF_F_TSO) {
-		if (xenbus_scanf(XBT_NIL, np->xbdev->otherend,
-				 "feature-gso-tcpv4", "%d", &val) < 0)
-			val = 0;
-
-		if (!val)
-			features &= ~NETIF_F_TSO;
-	}
-
-	return features;
-}
-
-static int xennet_set_features(struct net_device *dev, u32 features)
-{
-	if (!(features & NETIF_F_SG) && dev->mtu > ETH_DATA_LEN) {
-		netdev_info(dev, "Reducing MTU because no SG offload");
-		dev->mtu = ETH_DATA_LEN;
-	}
-
-	return 0;
-}
-
 static int xennet_connect(struct net_device *dev)
 {
 	struct netfront_info *np = netdev_priv(dev);


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