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authorStephen Hemminger <shemminger@vyatta.com>2009-06-17 07:30:37 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-17 18:46:53 -0700
commite9c1be80a7403fb817ec6229ec20a39e377cc4ce (patch)
tree2abd8532c0c6f62dc9485bd70f603be1bd57bbff
parentbf15fe996e050332c018cf63dd51288b081cc556 (diff)
downloadlinux-2.6.34-ux500-e9c1be80a7403fb817ec6229ec20a39e377cc4ce.tar.gz
sky2: reduce default transmit ring
Reduce the size of the driver transmit ring to reduce latency and allow qdisc to do better rate control. Also make it obvious what the minimum transmit ring allowed is and why. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/sky2.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 1b8de4518ad..6e95d2f5410 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -65,9 +65,9 @@
#define RX_DEF_PENDING RX_MAX_PENDING
#define TX_RING_SIZE 512
-#define TX_DEF_PENDING (TX_RING_SIZE - 1)
-#define TX_MIN_PENDING 64
+#define TX_DEF_PENDING 128
#define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
+#define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
#define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
#define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))