netxen: reduce memory footprint

o reduce rx ring size from 8192 to 4096.
o cut down old huge lro buffers.
Signed-off-by: NDhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic.h

@@ -146,7 +146,7 @@
 
 #define MAX_RX_BUFFER_LENGTH		1760
 #define MAX_RX_JUMBO_BUFFER_LENGTH 	8062
-#define MAX_RX_LRO_BUFFER_LENGTH	((48*1024)-512)
+#define MAX_RX_LRO_BUFFER_LENGTH	(8062)
 #define RX_DMA_MAP_LEN			(MAX_RX_BUFFER_LENGTH - 2)
 #define RX_JUMBO_DMA_MAP_LEN	\
 	(MAX_RX_JUMBO_BUFFER_LENGTH - 2)
@@ -207,11 +207,11 @@
 
 #define MAX_CMD_DESCRIPTORS		4096
 #define MAX_RCV_DESCRIPTORS		16384
-#define MAX_CMD_DESCRIPTORS_HOST	(MAX_CMD_DESCRIPTORS / 4)
-#define MAX_RCV_DESCRIPTORS_1G		(MAX_RCV_DESCRIPTORS / 4)
-#define MAX_RCV_DESCRIPTORS_10G		8192
-#define MAX_JUMBO_RCV_DESCRIPTORS	1024
-#define MAX_LRO_RCV_DESCRIPTORS		64
+#define MAX_CMD_DESCRIPTORS_HOST	1024
+#define MAX_RCV_DESCRIPTORS_1G		2048
+#define MAX_RCV_DESCRIPTORS_10G		4096
+#define MAX_JUMBO_RCV_DESCRIPTORS	512
+#define MAX_LRO_RCV_DESCRIPTORS		8
 #define MAX_RCVSTATUS_DESCRIPTORS	MAX_RCV_DESCRIPTORS
 #define MAX_JUMBO_RCV_DESC	MAX_JUMBO_RCV_DESCRIPTORS
 #define MAX_RCV_DESC		MAX_RCV_DESCRIPTORS

drivers/net/netxen/netxen_nic_ethtool.c

@@ -561,7 +561,10 @@ netxen_nic_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
 	}
 	ring->tx_pending = adapter->max_tx_desc_count;
 
-	ring->rx_max_pending = MAX_RCV_DESCRIPTORS;
+	if (adapter->ahw.board_type == NETXEN_NIC_GBE)
+		ring->rx_max_pending = MAX_RCV_DESCRIPTORS_1G;
+	else
+		ring->rx_max_pending = MAX_RCV_DESCRIPTORS_10G;
 	ring->tx_max_pending = MAX_CMD_DESCRIPTORS_HOST;
 	ring->rx_jumbo_max_pending = MAX_JUMBO_RCV_DESCRIPTORS;
 	ring->rx_mini_max_pending = 0;