ar71xx: ethernet: reduce tx dma ring size further to improve cache footprint

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 37765

target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h

@@ -55,10 +55,10 @@
 	(ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
 #define AG71XX_RX_BUF_SIZE (AG71XX_RX_PKT_SIZE + NET_SKB_PAD + NET_IP_ALIGN)
 
-#define AG71XX_TX_RING_SIZE_DEFAULT	64
+#define AG71XX_TX_RING_SIZE_DEFAULT	32
 #define AG71XX_RX_RING_SIZE_DEFAULT	128
 
-#define AG71XX_TX_RING_SIZE_MAX		128
+#define AG71XX_TX_RING_SIZE_MAX		32
 #define AG71XX_RX_RING_SIZE_MAX		128
 
 #ifdef CONFIG_AG71XX_DEBUG