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Message-ID: <20071017174243.GA4462@loki.buserror.net>
Date: Wed, 17 Oct 2007 12:42:43 -0500
From: Scott Wood <scottwood@...escale.com>
To: jgarzik@...ox.com
Cc: netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: [PATCH] fs_enet: Update for API changes
This driver was recently broken by several changes for which this
driver was not (or was improperly) updated:
1. SET_MODULE_OWNER() was removed.
2. netif_napi_add() was only being called when building with
the old CPM binding.
3. The received/budget test was backwards.
4. to_net_dev() was wrong -- the device struct embedded in
the net_device struct is not the same as the of_platform
device in the private struct.
5. napi_disable/napi_enable was being called even when napi
was not being used.
These changes have been fixed, and napi is now on by default.
Signed-off-by: Scott Wood <scottwood@...escale.com>
---
drivers/net/fs_enet/fs_enet-main.c | 28 ++++++++++++++++------------
drivers/net/fs_enet/fs_enet.h | 1 +
2 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index 04c6fae..f2a4d39 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -88,7 +88,7 @@ static void skb_align(struct sk_buff *skb, int align)
static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
{
struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi);
- struct net_device *dev = to_net_dev(fep->dev);
+ struct net_device *dev = fep->ndev;
const struct fs_platform_info *fpi = fep->fpi;
cbd_t __iomem *bdp;
struct sk_buff *skb, *skbn, *skbt;
@@ -217,7 +217,7 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
fep->cur_rx = bdp;
- if (received >= budget) {
+ if (received < budget) {
/* done */
netif_rx_complete(dev, napi);
(*fep->ops->napi_enable_rx)(dev);
@@ -807,20 +807,23 @@ static int fs_enet_open(struct net_device *dev)
int r;
int err;
- napi_enable(&fep->napi);
+ if (fep->fpi->use_napi)
+ napi_enable(&fep->napi);
/* Install our interrupt handler. */
r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt);
if (r != 0) {
printk(KERN_ERR DRV_MODULE_NAME
": %s Could not allocate FS_ENET IRQ!", dev->name);
- napi_disable(&fep->napi);
+ if (fep->fpi->use_napi)
+ napi_disable(&fep->napi);
return -EINVAL;
}
err = fs_init_phy(dev);
- if(err) {
- napi_disable(&fep->napi);
+ if (err) {
+ if (fep->fpi->use_napi)
+ napi_disable(&fep->napi);
return err;
}
phy_start(fep->phydev);
@@ -1232,7 +1235,7 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
fpi->rx_ring = 32;
fpi->tx_ring = 32;
fpi->rx_copybreak = 240;
- fpi->use_napi = 0;
+ fpi->use_napi = 1;
fpi->napi_weight = 17;
ret = find_phy(ofdev->node, fpi);
@@ -1249,11 +1252,11 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
goto out_free_fpi;
}
- SET_MODULE_OWNER(ndev);
dev_set_drvdata(&ofdev->dev, ndev);
fep = netdev_priv(ndev);
fep->dev = &ofdev->dev;
+ fep->ndev = ndev;
fep->fpi = fpi;
fep->ops = match->data;
@@ -1288,10 +1291,11 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
ndev->stop = fs_enet_close;
ndev->get_stats = fs_enet_get_stats;
ndev->set_multicast_list = fs_set_multicast_list;
- if (fpi->use_napi) {
- ndev->poll = fs_enet_rx_napi;
- ndev->weight = fpi->napi_weight;
- }
+
+ if (fpi->use_napi)
+ netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
+ fpi->napi_weight);
+
ndev->ethtool_ops = &fs_ethtool_ops;
ndev->do_ioctl = fs_ioctl;
diff --git a/drivers/net/fs_enet/fs_enet.h b/drivers/net/fs_enet/fs_enet.h
index baf6477..c675e29 100644
--- a/drivers/net/fs_enet/fs_enet.h
+++ b/drivers/net/fs_enet/fs_enet.h
@@ -75,6 +75,7 @@ struct phy_info {
struct fs_enet_private {
struct napi_struct napi;
struct device *dev; /* pointer back to the device (must be initialized first) */
+ struct net_device *ndev;
spinlock_t lock; /* during all ops except TX pckt processing */
spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */
struct fs_platform_info *fpi;
--
1.5.3.4
-
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