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Date: Fri, 05 Sep 2008 11:31:24 +0800
From: Wang Chen <wangchen@...fujitsu.com>
To: "David S. Miller" <davem@...emloft.net>
CC: Jeff Garzik <jgarzik@...ox.com>, NETDEV <netdev@...r.kernel.org>,
khc@...waw.pl
Subject: [PATCH 18/18] netdevice sbni: Convert directly reference of netdev->priv
to netdev_priv()
We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.
OK, becasue Dave S. Miller said, "every direct netdev->priv usage is a bug",
and I want to kill netdev->priv later, I decided to convert all the direct
reference of netdev->priv first.
Different to readonly reference of netdev->priv, in this driver, netdev->priv
was changed. But obviously, the change of netdev->priv is needless.
Signed-off-by: Wang Chen <wangchen@...fujitsu.com>
---
drivers/net/wan/sbni.c | 99 +++++++++++++++++++++++++-----------------------
1 files changed, 52 insertions(+), 47 deletions(-)
diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 6596cd0..fd4545d 100644
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -186,6 +186,7 @@ static unsigned int netcard_portlist[ ] __initdata = {
0x2b0, 0x2b4, 0x2c0, 0x2c4, 0x2d0, 0x2d4, 0x2e0, 0x2e4, 0x2f0, 0x2f4,
0 };
+#define NET_LOCAL_LOCK(dev) (((struct net_local *)netdev_priv(dev))->lock)
/*
* Look for SBNI card which addr stored in dev->base_addr, if nonzero.
@@ -287,7 +288,7 @@ static int __init sbni_init(struct net_device *dev)
}
-int __init
+static int __init
sbni_pci_probe( struct net_device *dev )
{
struct pci_dev *pdev = NULL;
@@ -378,22 +379,23 @@ sbni_probe1( struct net_device *dev, unsigned long ioaddr, int irq )
dev->irq = irq;
dev->base_addr = ioaddr;
- /* Allocate dev->priv and fill in sbni-specific dev fields. */
- nl = dev->priv;
+ /* Fill in sbni-specific dev fields. */
+ nl = netdev_priv(dev);
if( !nl ) {
printk( KERN_ERR "%s: unable to get memory!\n", dev->name );
release_region( ioaddr, SBNI_IO_EXTENT );
return NULL;
}
- dev->priv = nl;
memset( nl, 0, sizeof(struct net_local) );
spin_lock_init( &nl->lock );
/* store MAC address (generate if that isn't known) */
*(__be16 *)dev->dev_addr = htons( 0x00ff );
*(__be32 *)(dev->dev_addr + 2) = htonl( 0x01000000 |
- ( (mac[num] ? mac[num] : (u32)((long)dev->priv)) & 0x00ffffff) );
+ ((mac[num] ?
+ mac[num] :
+ (u32)((long)netdev_priv(dev))) & 0x00ffffff));
/* store link settings (speed, receive level ) */
nl->maxframe = DEFAULT_FRAME_LEN;
@@ -447,7 +449,7 @@ sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
/* Looking for idle device in the list */
for( p = dev; p; ) {
- struct net_local *nl = (struct net_local *) p->priv;
+ struct net_local *nl = netdev_priv(p);
spin_lock( &nl->lock );
if( nl->tx_buf_p || (nl->state & FL_LINE_DOWN) ) {
p = nl->link;
@@ -469,7 +471,7 @@ sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
static int
sbni_start_xmit( struct sk_buff *skb, struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
netif_stop_queue( dev );
spin_lock( &nl->lock );
@@ -503,12 +505,12 @@ static irqreturn_t
sbni_interrupt( int irq, void *dev_id )
{
struct net_device *dev = dev_id;
- struct net_local *nl = dev->priv;
+ struct net_local *nl = netdev_priv(dev);
int repeat;
spin_lock( &nl->lock );
if( nl->second )
- spin_lock( &((struct net_local *) nl->second->priv)->lock );
+ spin_lock(&NET_LOCAL_LOCK(nl->second));
do {
repeat = 0;
@@ -522,7 +524,7 @@ sbni_interrupt( int irq, void *dev_id )
} while( repeat );
if( nl->second )
- spin_unlock( &((struct net_local *)nl->second->priv)->lock );
+ spin_unlock(&NET_LOCAL_LOCK(nl->second));
spin_unlock( &nl->lock );
return IRQ_HANDLED;
}
@@ -531,7 +533,7 @@ sbni_interrupt( int irq, void *dev_id )
static void
handle_channel( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
unsigned long ioaddr = dev->base_addr;
int req_ans;
@@ -540,7 +542,7 @@ handle_channel( struct net_device *dev )
#ifdef CONFIG_SBNI_MULTILINE
/* Lock the master device because we going to change its local data */
if( nl->state & FL_SLAVE )
- spin_lock( &((struct net_local *) nl->master->priv)->lock );
+ spin_lock(&NET_LOCAL_LOCK(nl->master));
#endif
outb( (inb( ioaddr + CSR0 ) & ~EN_INT) | TR_REQ, ioaddr + CSR0 );
@@ -576,7 +578,7 @@ handle_channel( struct net_device *dev )
#ifdef CONFIG_SBNI_MULTILINE
if( nl->state & FL_SLAVE )
- spin_unlock( &((struct net_local *) nl->master->priv)->lock );
+ spin_unlock(&NET_LOCAL_LOCK(nl->master));
#endif
}
@@ -589,7 +591,7 @@ handle_channel( struct net_device *dev )
static int
recv_frame( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
unsigned long ioaddr = dev->base_addr;
u32 crc = CRC32_INITIAL;
@@ -623,7 +625,7 @@ recv_frame( struct net_device *dev )
static void
send_frame( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
u32 crc = CRC32_INITIAL;
@@ -680,7 +682,7 @@ do_send:
static void
download_data( struct net_device *dev, u32 *crc_p )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
struct sk_buff *skb = nl->tx_buf_p;
unsigned len = min_t(unsigned int, skb->len - nl->outpos, nl->framelen);
@@ -699,7 +701,7 @@ static int
upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
unsigned is_first, u32 crc )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
int frame_ok;
@@ -721,9 +723,9 @@ upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
nl->wait_frameno = 0,
nl->inppos = 0,
#ifdef CONFIG_SBNI_MULTILINE
- ((struct net_local *) nl->master->priv)
+ ((struct net_local *)netdev_priv(nl->master))
->stats.rx_errors++,
- ((struct net_local *) nl->master->priv)
+ ((struct net_local *)netdev_priv(nl->master))
->stats.rx_missed_errors++;
#else
nl->stats.rx_errors++,
@@ -740,8 +742,10 @@ upload_data( struct net_device *dev, unsigned framelen, unsigned frameno,
*/
nl->wait_frameno = 0,
#ifdef CONFIG_SBNI_MULTILINE
- ((struct net_local *) nl->master->priv)->stats.rx_errors++,
- ((struct net_local *) nl->master->priv)->stats.rx_crc_errors++;
+ ((struct net_local *)netdev_priv(nl->master))
+ ->stats.rx_errors++,
+ ((struct net_local *)netdev_priv(nl->master))
+ ->stats.rx_crc_errors++;
#else
nl->stats.rx_errors++,
nl->stats.rx_crc_errors++;
@@ -755,8 +759,8 @@ static inline void
send_complete( struct net_local *nl )
{
#ifdef CONFIG_SBNI_MULTILINE
- ((struct net_local *) nl->master->priv)->stats.tx_packets++;
- ((struct net_local *) nl->master->priv)->stats.tx_bytes
+ ((struct net_local *)netdev_priv(nl->master))->stats.tx_packets++;
+ ((struct net_local *)netdev_priv(nl->master))->stats.tx_bytes
+= nl->tx_buf_p->len;
#else
nl->stats.tx_packets++;
@@ -775,7 +779,7 @@ send_complete( struct net_local *nl )
static void
interpret_ack( struct net_device *dev, unsigned ack )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
if( ack == FRAME_SENT_OK ) {
nl->state &= ~FL_NEED_RESEND;
@@ -809,7 +813,7 @@ interpret_ack( struct net_device *dev, unsigned ack )
static int
append_frame_to_pkt( struct net_device *dev, unsigned framelen, u32 crc )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
u8 *p;
@@ -840,7 +844,7 @@ append_frame_to_pkt( struct net_device *dev, unsigned framelen, u32 crc )
static void
prepare_to_send( struct sk_buff *skb, struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
unsigned int len;
@@ -871,15 +875,15 @@ prepare_to_send( struct sk_buff *skb, struct net_device *dev )
static void
drop_xmit_queue( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
if( nl->tx_buf_p )
dev_kfree_skb_any( nl->tx_buf_p ),
nl->tx_buf_p = NULL,
#ifdef CONFIG_SBNI_MULTILINE
- ((struct net_local *) nl->master->priv)
+ ((struct net_local *)netdev_priv(nl->master))
->stats.tx_errors++,
- ((struct net_local *) nl->master->priv)
+ ((struct net_local *)netdev_priv(nl->master))
->stats.tx_carrier_errors++;
#else
nl->stats.tx_errors++,
@@ -903,7 +907,7 @@ drop_xmit_queue( struct net_device *dev )
static void
send_frame_header( struct net_device *dev, u32 *crc_p )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
u32 crc = *crc_p;
u32 len_field = nl->framelen + 6; /* CRC + frameno + reserved */
@@ -1005,7 +1009,7 @@ get_rx_buf( struct net_device *dev )
static void
indicate_pkt( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
struct sk_buff *skb = nl->rx_buf_p;
skb_put( skb, nl->inppos );
@@ -1014,8 +1018,9 @@ indicate_pkt( struct net_device *dev )
skb->protocol = eth_type_trans( skb, nl->master );
netif_rx( skb );
dev->last_rx = jiffies;
- ++((struct net_local *) nl->master->priv)->stats.rx_packets;
- ((struct net_local *) nl->master->priv)->stats.rx_bytes += nl->inppos;
+ ++((struct net_local *)netdev_priv(nl->master))->stats.rx_packets;
+ ((struct net_local *)netdev_priv(nl->master))->stats.rx_bytes +=
+ nl->inppos;
#else
skb->protocol = eth_type_trans( skb, dev );
netif_rx( skb );
@@ -1038,7 +1043,7 @@ static void
sbni_watchdog( unsigned long arg )
{
struct net_device *dev = (struct net_device *) arg;
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
struct timer_list *w = &nl->watchdog;
unsigned long flags;
unsigned char csr0;
@@ -1091,7 +1096,7 @@ static unsigned char timeout_rxl_tab[] = {
static void
card_start( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
nl->timer_ticks = CHANGE_LEVEL_START_TICKS;
nl->state &= ~(FL_WAIT_ACK | FL_NEED_RESEND);
@@ -1113,7 +1118,7 @@ card_start( struct net_device *dev )
static void
change_level( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
if( nl->delta_rxl == 0 ) /* do not auto-negotiate RxL */
return;
@@ -1137,7 +1142,7 @@ change_level( struct net_device *dev )
static void
timeout_change_level( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
nl->cur_rxl_index = timeout_rxl_tab[ nl->timeout_rxl ];
if( ++nl->timeout_rxl >= 4 )
@@ -1160,7 +1165,7 @@ timeout_change_level( struct net_device *dev )
static int
sbni_open( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
struct timer_list *w = &nl->watchdog;
/*
@@ -1176,7 +1181,7 @@ sbni_open( struct net_device *dev )
|| (*p)->base_addr == dev->base_addr - 4)
&& (*p)->flags & IFF_UP ) {
- ((struct net_local *) ((*p)->priv))
+ ((struct net_local *) (netdev_priv(*p)))
->second = dev;
printk( KERN_NOTICE "%s: using shared irq "
"with %s\n", dev->name, (*p)->name );
@@ -1216,7 +1221,7 @@ handler_attached:
static int
sbni_close( struct net_device *dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
if( nl->second && nl->second->flags & IFF_UP ) {
printk( KERN_NOTICE "Secondary channel (%s) is active!\n",
@@ -1300,7 +1305,7 @@ sbni_card_probe( unsigned long ioaddr )
static int
sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
{
- struct net_local *nl = (struct net_local *) dev->priv;
+ struct net_local *nl = netdev_priv(dev);
struct sbni_flags flags;
int error = 0;
@@ -1390,8 +1395,8 @@ sbni_ioctl( struct net_device *dev, struct ifreq *ifr, int cmd )
static int
enslave( struct net_device *dev, struct net_device *slave_dev )
{
- struct net_local *nl = (struct net_local *) dev->priv;
- struct net_local *snl = (struct net_local *) slave_dev->priv;
+ struct net_local *nl = netdev_priv(dev);
+ struct net_local *snl = netdev_priv(slave_dev);
if( nl->state & FL_SLAVE ) /* This isn't master or free device */
return -EBUSY;
@@ -1425,9 +1430,9 @@ enslave( struct net_device *dev, struct net_device *slave_dev )
static int
emancipate( struct net_device *dev )
{
- struct net_local *snl = (struct net_local *) dev->priv;
+ struct net_local *snl = netdev_priv(dev);
struct net_device *p = snl->master;
- struct net_local *nl = (struct net_local *) p->priv;
+ struct net_local *nl = netdev_priv(p);
if( !(snl->state & FL_SLAVE) )
return -EINVAL;
@@ -1438,7 +1443,7 @@ emancipate( struct net_device *dev )
/* exclude from list */
for(;;) { /* must be in list */
- struct net_local *t = (struct net_local *) p->priv;
+ struct net_local *t = netdev_priv(p);
if( t->link == dev ) {
t->link = snl->link;
break;
@@ -1465,7 +1470,7 @@ emancipate( struct net_device *dev )
static struct net_device_stats *
sbni_get_stats( struct net_device *dev )
{
- return &((struct net_local *) dev->priv)->stats;
+ return &((struct net_local *)netdev_priv(dev))->stats;
}
--
1.5.3.4
--
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