summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/net/mv643xx_eth.c51
-rw-r--r--drivers/net/mv643xx_eth.h8
2 files changed, 30 insertions, 29 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 4d5e3b8..73c766b 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -169,11 +169,11 @@ static void mv643xx_eth_rx_task(void *data)
if (test_and_set_bit(0, &mp->rx_task_busy))
panic("%s: Error in test_set_bit / clear_bit", dev->name);
- while (mp->rx_ring_skbs < (mp->rx_ring_size - 5)) {
+ while (mp->rx_desc_count < (mp->rx_ring_size - 5)) {
skb = dev_alloc_skb(RX_SKB_SIZE + DMA_ALIGN);
if (!skb)
break;
- mp->rx_ring_skbs++;
+ mp->rx_desc_count++;
unaligned = (u32)skb->data & (DMA_ALIGN - 1);
if (unaligned)
skb_reserve(skb, DMA_ALIGN - unaligned);
@@ -194,7 +194,7 @@ static void mv643xx_eth_rx_task(void *data)
* If RX ring is empty of SKB, set a timer to try allocating
* again in a later time .
*/
- if ((mp->rx_ring_skbs == 0) && (mp->rx_timer_flag == 0)) {
+ if ((mp->rx_desc_count == 0) && (mp->rx_timer_flag == 0)) {
printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
/* After 100mSec */
mp->timeout.expires = jiffies + (HZ / 10);
@@ -394,7 +394,7 @@ static int mv643xx_eth_receive_queue(struct net_device *dev)
#else
while (eth_port_receive(mp, &pkt_info) == ETH_OK) {
#endif
- mp->rx_ring_skbs--;
+ mp->rx_desc_count--;
received_packets++;
/* Update statistics. Note byte count includes 4 byte CRC count */
@@ -494,7 +494,7 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id,
/* UDP change : We may need this */
if ((eth_int_cause_ext & 0x0000ffff) &&
(mv643xx_eth_free_tx_queue(dev, eth_int_cause_ext) == 0) &&
- (mp->tx_ring_size > mp->tx_ring_skbs + MAX_DESCS_PER_SKB))
+ (mp->tx_ring_size > mp->tx_desc_count + MAX_DESCS_PER_SKB))
netif_wake_queue(dev);
#ifdef MV643XX_NAPI
} else {
@@ -778,7 +778,7 @@ static int mv643xx_eth_open(struct net_device *dev)
}
/* Allocate TX ring */
- mp->tx_ring_skbs = 0;
+ mp->tx_desc_count = 0;
size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
mp->tx_desc_area_size = size;
@@ -803,7 +803,7 @@ static int mv643xx_eth_open(struct net_device *dev)
ether_init_tx_desc_ring(mp);
/* Allocate RX ring */
- mp->rx_ring_skbs = 0;
+ mp->rx_desc_count = 0;
size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
mp->rx_desc_area_size = size;
@@ -880,17 +880,17 @@ static void mv643xx_eth_free_tx_rings(struct net_device *dev)
mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), 0x0000ff00);
/* Free outstanding skb's on TX rings */
- for (curr = 0; mp->tx_ring_skbs && curr < mp->tx_ring_size; curr++) {
+ for (curr = 0; mp->tx_desc_count && curr < mp->tx_ring_size; curr++) {
skb = mp->tx_skb[curr];
if (skb) {
- mp->tx_ring_skbs -= skb_shinfo(skb)->nr_frags;
+ mp->tx_desc_count -= skb_shinfo(skb)->nr_frags;
dev_kfree_skb(skb);
- mp->tx_ring_skbs--;
+ mp->tx_desc_count--;
}
}
- if (mp->tx_ring_skbs)
+ if (mp->tx_desc_count)
printk("%s: Error on Tx descriptor free - could not free %d"
- " descriptors\n", dev->name, mp->tx_ring_skbs);
+ " descriptors\n", dev->name, mp->tx_desc_count);
/* Free TX ring */
if (mp->tx_sram_size)
@@ -910,18 +910,18 @@ static void mv643xx_eth_free_rx_rings(struct net_device *dev)
mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), 0x0000ff00);
/* Free preallocated skb's on RX rings */
- for (curr = 0; mp->rx_ring_skbs && curr < mp->rx_ring_size; curr++) {
+ for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
if (mp->rx_skb[curr]) {
dev_kfree_skb(mp->rx_skb[curr]);
- mp->rx_ring_skbs--;
+ mp->rx_desc_count--;
}
}
- if (mp->rx_ring_skbs)
+ if (mp->rx_desc_count)
printk(KERN_ERR
"%s: Error in freeing Rx Ring. %d skb's still"
" stuck in RX Ring - ignoring them\n", dev->name,
- mp->rx_ring_skbs);
+ mp->rx_desc_count);
/* Free RX ring */
if (mp->rx_sram_size)
iounmap(mp->p_rx_desc_area);
@@ -991,7 +991,8 @@ static void mv643xx_tx(struct net_device *dev)
}
if (netif_queue_stopped(dev) &&
- mp->tx_ring_size > mp->tx_ring_skbs + MAX_DESCS_PER_SKB)
+ mp->tx_ring_size >
+ mp->tx_desc_count + MAX_DESCS_PER_SKB)
netif_wake_queue(dev);
}
@@ -1083,7 +1084,7 @@ static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* This is a hard error, log it. */
- if ((mp->tx_ring_size - mp->tx_ring_skbs) <=
+ if ((mp->tx_ring_size - mp->tx_desc_count) <=
(skb_shinfo(skb)->nr_frags + 1)) {
netif_stop_queue(dev);
printk(KERN_ERR
@@ -1260,7 +1261,7 @@ static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Check if TX queue can handle another skb. If not, then
* signal higher layers to stop requesting TX
*/
- if (mp->tx_ring_size <= (mp->tx_ring_skbs + MAX_DESCS_PER_SKB))
+ if (mp->tx_ring_size <= (mp->tx_desc_count + MAX_DESCS_PER_SKB))
/*
* Stop getting skb's from upper layers.
* Getting skb's from upper layers will be enabled again after
@@ -2563,8 +2564,8 @@ static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
return ETH_ERROR;
}
- mp->tx_ring_skbs++;
- BUG_ON(mp->tx_ring_skbs > mp->tx_ring_size);
+ mp->tx_desc_count++;
+ BUG_ON(mp->tx_desc_count > mp->tx_ring_size);
/* Get the Tx Desc ring indexes */
tx_desc_curr = mp->tx_curr_desc_q;
@@ -2632,8 +2633,8 @@ static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
if (mp->tx_resource_err)
return ETH_QUEUE_FULL;
- mp->tx_ring_skbs++;
- BUG_ON(mp->tx_ring_skbs > mp->tx_ring_size);
+ mp->tx_desc_count++;
+ BUG_ON(mp->tx_desc_count > mp->tx_ring_size);
/* Get the Tx Desc ring indexes */
tx_desc_curr = mp->tx_curr_desc_q;
@@ -2747,8 +2748,8 @@ static ETH_FUNC_RET_STATUS eth_tx_return_desc(struct mv643xx_private *mp,
/* Any Tx return cancels the Tx resource error status */
mp->tx_resource_err = 0;
- BUG_ON(mp->tx_ring_skbs == 0);
- mp->tx_ring_skbs--;
+ BUG_ON(mp->tx_desc_count == 0);
+ mp->tx_desc_count--;
out:
spin_unlock_irqrestore(&mp->lock, flags);
diff --git a/drivers/net/mv643xx_eth.h b/drivers/net/mv643xx_eth.h
index ef83906..345f970 100644
--- a/drivers/net/mv643xx_eth.h
+++ b/drivers/net/mv643xx_eth.h
@@ -371,12 +371,12 @@ struct mv643xx_private {
spinlock_t lock;
/* Size of Tx Ring per queue */
unsigned int tx_ring_size;
- /* Ammont of SKBs outstanding on Tx queue */
- unsigned int tx_ring_skbs;
+ /* Number of tx descriptors in use */
+ unsigned int tx_desc_count;
/* Size of Rx Ring per queue */
unsigned int rx_ring_size;
- /* Ammount of SKBs allocated to Rx Ring per queue */
- unsigned int rx_ring_skbs;
+ /* Number of rx descriptors in use */
+ unsigned int rx_desc_count;
/*
* rx_task used to fill RX ring out of bottom half context
OpenPOWER on IntegriCloud