[PATCH] sky2: tx/rx ring data structure split

Split Tx and Rx ring into two different data structures.
Tx needs the next value (to handle partial status), and
Rx always needs the mapaddr (to handle resubmitting same buffer).

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 13 insertions, 11 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index b1a5886a48a..1eefacbfcd2 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -958,7 +958,7 @@ static int sky2_up(struct net_device *dev)
 	if (!sky2->tx_le)
 		goto err_out;
 
-	sky2->tx_ring = kzalloc(TX_RING_SIZE * sizeof(struct ring_info),
+	sky2->tx_ring = kcalloc(TX_RING_SIZE, sizeof(struct tx_ring_info),
 				GFP_KERNEL);
 	if (!sky2->tx_ring)
 		goto err_out;
@@ -970,7 +970,7 @@ static int sky2_up(struct net_device *dev)
 		goto err_out;
 	memset(sky2->rx_le, 0, RX_LE_BYTES);
 
-	sky2->rx_ring = kzalloc(sky2->rx_pending * sizeof(struct ring_info),
+	sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct ring_info),
 				GFP_KERNEL);
 	if (!sky2->rx_ring)
 		goto err_out;
@@ -1070,7 +1070,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 	struct sky2_port *sky2 = netdev_priv(dev);
 	struct sky2_hw *hw = sky2->hw;
 	struct sky2_tx_le *le = NULL;
-	struct ring_info *re;
+	struct tx_ring_info *re;
 	unsigned i, len;
 	dma_addr_t mapping;
 	u32 addr64;
@@ -1173,11 +1173,11 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 
 	/* Record the transmit mapping info */
 	re->skb = skb;
-	re->mapaddr = mapping;
+	pci_unmap_addr_set(re, mapaddr, mapping);
 
 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 		skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-		struct ring_info *fre;
+		struct tx_ring_info *fre;
 
 		mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
 				       frag->size, PCI_DMA_TODEVICE);
@@ -1198,9 +1198,9 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
 
 		fre = sky2->tx_ring
 		    + ((re - sky2->tx_ring) + i + 1) % TX_RING_SIZE;
-		fre->skb = NULL;
-		fre->mapaddr = mapping;
+		pci_unmap_addr_set(fre, mapaddr, mapping);
 	}
+
 	re->idx = sky2->tx_prod;
 	le->ctrl |= EOP;
 
@@ -1239,7 +1239,7 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
 	spin_lock(&sky2->tx_lock);
 
 	while (sky2->tx_cons != done) {
-		struct ring_info *re = sky2->tx_ring + sky2->tx_cons;
+		struct tx_ring_info *re = sky2->tx_ring + sky2->tx_cons;
 		struct sk_buff *skb;
 
 		/* Check for partial status */
@@ -1248,15 +1248,17 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done)
 			goto out;
 
 		skb = re->skb;
-		pci_unmap_single(sky2->hw->pdev, re->mapaddr,
+		pci_unmap_single(sky2->hw->pdev,
+				 pci_unmap_addr(re, mapaddr),
 				 skb_headlen(skb), PCI_DMA_TODEVICE);
 
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-			struct ring_info *fre;
+			struct tx_ring_info *fre;
 			fre =
 			    sky2->tx_ring + (sky2->tx_cons + i +
 					     1) % TX_RING_SIZE;
-			pci_unmap_page(sky2->hw->pdev, fre->mapaddr,
+			pci_unmap_page(sky2->hw->pdev,
+				       pci_unmap_addr(fre, mapaddr),
 				       skb_shinfo(skb)->frags[i].size,
 				       PCI_DMA_TODEVICE);
 		}