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authorstephen hemminger <shemminger@vyatta.com>2011-11-16 13:42:58 +0000
committerDavid S. Miller <davem@davemloft.net>2011-11-16 20:27:12 -0500
commitb1cb82566242fbb54d5c655e23995a8f7bd37ecf (patch)
tree869889275a6991386cd1270852002dfa432680d1 /drivers
parent926d0977b28793533a99ec66484385b5f602e9c8 (diff)
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sky2: reduce default Tx ring size
The default Tx ring size for the sky2 driver is quite large and could cause excess buffer bloat for many users. The minimum ring size possible and still allow handling the worst case packet on 64bit platforms is 38 which gets rounded up to a power of 2. But most packets only require a couple of ring elements. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/marvell/sky2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 98d435a187b..3777fb348b8 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -68,7 +68,7 @@
#define MAX_SKB_TX_LE (2 + (sizeof(dma_addr_t)/sizeof(u32))*(MAX_SKB_FRAGS+1))
#define TX_MIN_PENDING (MAX_SKB_TX_LE+1)
#define TX_MAX_PENDING 1024
-#define TX_DEF_PENDING 127
+#define TX_DEF_PENDING 63
#define TX_WATCHDOG (5 * HZ)
#define NAPI_WEIGHT 64