diff options
| -rw-r--r-- | drivers/net/skge.c | 20 | ||||
| -rw-r--r-- | drivers/net/skge.h | 1 |
2 files changed, 10 insertions, 11 deletions
diff --git a/drivers/net/skge.c b/drivers/net/skge.c index a261766bc05..a6f42fc8573 100644 --- a/drivers/net/skge.c +++ b/drivers/net/skge.c @@ -847,8 +847,7 @@ static void skge_link_up(struct skge_port *skge) LED_BLK_OFF|LED_SYNC_OFF|LED_ON); netif_carrier_on(skge->netdev); - if (skge->tx_avail > MAX_SKB_FRAGS + 1) - netif_wake_queue(skge->netdev); + netif_wake_queue(skge->netdev); if (netif_msg_link(skge)) printk(KERN_INFO PFX @@ -2190,8 +2189,6 @@ static int skge_up(struct net_device *dev) if (err) goto free_rx_ring; - skge->tx_avail = skge->tx_ring.count - 1; - /* Initialize MAC */ spin_lock_bh(&hw->phy_lock); if (hw->chip_id == CHIP_ID_GENESIS) @@ -2294,6 +2291,12 @@ static int skge_down(struct net_device *dev) return 0; } +static inline int skge_avail(const struct skge_ring *ring) +{ + return ((ring->to_clean > ring->to_use) ? 0 : ring->count) + + (ring->to_clean - ring->to_use) - 1; +} + static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev) { struct skge_port *skge = netdev_priv(dev); @@ -2314,7 +2317,7 @@ static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_LOCKED; } - if (unlikely(skge->tx_avail < skb_shinfo(skb)->nr_frags +1)) { + if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1)) { if (!netif_queue_stopped(dev)) { netif_stop_queue(dev); @@ -2390,8 +2393,7 @@ static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev) dev->name, e - ring->start, skb->len); ring->to_use = e->next; - skge->tx_avail -= skb_shinfo(skb)->nr_frags + 1; - if (skge->tx_avail <= MAX_SKB_FRAGS + 1) { + if (skge_avail(&skge->tx_ring) <= MAX_SKB_FRAGS + 1) { pr_debug("%s: transmit queue full\n", dev->name); netif_stop_queue(dev); } @@ -2416,14 +2418,12 @@ static void skge_tx_complete(struct skge_port *skge, struct skge_element *last) e->skb = NULL; pci_unmap_single(pdev, pci_unmap_addr(e, mapaddr), skb_headlen(skb), PCI_DMA_TODEVICE); - ++skge->tx_avail; for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { e = e->next; pci_unmap_page(pdev, pci_unmap_addr(e, mapaddr), skb_shinfo(skb)->frags[i].size, PCI_DMA_TODEVICE); - ++skge->tx_avail; } dev_kfree_skb(skb); @@ -2688,7 +2688,7 @@ static void skge_tx_done(struct skge_port *skge) skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F); - if (skge->tx_avail > MAX_SKB_FRAGS + 1) + if (skge_avail(&skge->tx_ring) > MAX_SKB_FRAGS + 1) netif_wake_queue(skge->netdev); spin_unlock(&skge->tx_lock); diff --git a/drivers/net/skge.h b/drivers/net/skge.h index 2efdacc290e..1f1ce88c818 100644 --- a/drivers/net/skge.h +++ b/drivers/net/skge.h @@ -2418,7 +2418,6 @@ struct skge_port { int port; spinlock_t tx_lock; - u32 tx_avail; struct skge_ring tx_ring; struct skge_ring rx_ring; |