[PATCH] skge: TX low water mark definition

Consolidate all usage of ring low water mark to one value.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 55245db..7d8e2ab 100644 (file)
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -50,6 +50,7 @@
 #define DEFAULT_TX_RING_SIZE   128
 #define DEFAULT_RX_RING_SIZE   512
 #define MAX_TX_RING_SIZE       1024
+#define TX_LOW_WATER           (MAX_SKB_FRAGS + 1)
 #define MAX_RX_RING_SIZE       4096
 #define RX_COPY_THRESHOLD      128
 #define RX_BUF_SIZE            1536
@@ -401,7 +402,7 @@ static int skge_set_ring_param(struct net_device *dev,
        int err;
 
        if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE ||
-           p->tx_pending < MAX_SKB_FRAGS+1 || p->tx_pending > MAX_TX_RING_SIZE)
+           p->tx_pending < TX_LOW_WATER || p->tx_pending > MAX_TX_RING_SIZE)
                return -EINVAL;
 
        skge->rx_ring.count = p->rx_pending;
@@ -2394,7 +2395,7 @@ 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;
-       if (skge_avail(&skge->tx_ring) <= MAX_SKB_FRAGS + 1) {
+       if (skge_avail(&skge->tx_ring) <= TX_LOW_WATER) {
                pr_debug("%s: transmit queue full\n", dev->name);
                netif_stop_queue(dev);
        }
@@ -2689,7 +2690,7 @@ 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_avail(&skge->tx_ring) > MAX_SKB_FRAGS + 1)
+       if (skge_avail(&skge->tx_ring) > TX_LOW_WATER)
                netif_wake_queue(skge->netdev);
 
        spin_unlock(&skge->tx_lock);