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authorGabor Juhos <juhosg@openwrt.org>2013-12-17 16:27:46 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-12-17 16:27:46 +0000
commit31de995025ff8d59e9588f2eb04485168a5e355f (patch)
tree2a8be0b6029a3a7c1e38040eb0c802d2b8199bf6 /target/linux
parentb35e0da0f4272bc5f07e8b35325c2a7a91d4d14b (diff)
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ar71xx: ag71xx: compute the RX buffer size from the maximum frame size
Currently, the AG71XX_RX_PKT_SIZE value limits the received frame size to 1514/1516 bytes with/without a VLAN header respectively. However the hardware limit is controlled by the value the AG71XX_REG_MAC_MFL register which contains the value of the max_frame_len field. Compute the RX buffer size from the max_frame_len field to get rid of the 1514/1516 byte limitation. Also remove the unused AG71XX_RX_PKT_SIZE definition. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 39121
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h2
-rw-r--r--target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c2
2 files changed, 1 insertions, 3 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
index f3f9f14801..b0df017571 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h
@@ -51,8 +51,6 @@
#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL)
#define AG71XX_TX_MTU_LEN 1540
-#define AG71XX_RX_PKT_SIZE \
- (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
#define AG71XX_TX_RING_SIZE_DEFAULT 32
#define AG71XX_RX_RING_SIZE_DEFAULT 128
diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index 04e1e586c2..622ffed1ea 100644
--- a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -609,7 +609,7 @@ static int ag71xx_open(struct net_device *dev)
struct ag71xx *ag = netdev_priv(dev);
int ret;
- ag->rx_buf_size = AG71XX_RX_PKT_SIZE + NET_SKB_PAD + NET_IP_ALIGN;
+ ag->rx_buf_size = ag->max_frame_len + NET_SKB_PAD + NET_IP_ALIGN;
ret = ag71xx_rings_init(ag);
if (ret)