summaryrefslogtreecommitdiffstats
path: root/target/linux/realtek
diff options
context:
space:
mode:
authorHarshal Gohel <hg@simonwunderlich.de>2023-11-27 17:08:04 +0100
committerSander Vanheule <sander@svanheule.net>2024-01-09 21:15:23 +0100
commit3e753c45cd19199ef61aad805b0e29ed261577bd (patch)
tree8ecce8761e49cc7493510a1dc4ac3a96d14bf8c5 /target/linux/realtek
parent38bec08e87b69212daf34eac7b26d643a92d9353 (diff)
downloadopenwrt-3e753c45cd19199ef61aad805b0e29ed261577bd.tar.gz
openwrt-3e753c45cd19199ef61aad805b0e29ed261577bd.tar.bz2
openwrt-3e753c45cd19199ef61aad805b0e29ed261577bd.zip
rtl838x: Enable jumbo frames by default
Increase DEFAULT_MTU and max-mtu size Increase truncate length on rx of jumbo frame Acked-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Harshal Gohel <hg@simonwunderlich.de>
Diffstat (limited to 'target/linux/realtek')
-rw-r--r--target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c15
-rw-r--r--target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h3
2 files changed, 12 insertions, 6 deletions
diff --git a/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c b/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c
index 9dcb7a3b78..54e592aeaa 100644
--- a/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c
+++ b/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c
@@ -43,6 +43,9 @@ extern struct rtl83xx_soc_info soc_info;
#define RX_EN 0x4
#define TX_EN_93XX 0x20
#define RX_EN_93XX 0x10
+#define RX_TRUNCATE_EN_93XX BIT(6)
+#define RX_TRUNCATE_EN_83XX BIT(4)
+#define TX_PAD_EN_838X BIT(5)
#define TX_DO 0x2
#define WRAP 0x2
#define MAX_PORTS 57
@@ -727,8 +730,8 @@ static void rtl838x_hw_en_rxtx(struct rtl838x_eth_priv *priv)
/* Disable Head of Line features for all RX rings */
sw_w32(0xffffffff, priv->r->dma_if_rx_ring_size(0));
- /* Truncate RX buffer to 0x640 (1600) bytes, pad TX */
- sw_w32(0x06400020, priv->r->dma_if_ctrl);
+ /* Truncate RX buffer to DEFAULT_MTU bytes, pad TX */
+ sw_w32((DEFAULT_MTU << 16) | RX_TRUNCATE_EN_83XX | TX_PAD_EN_838X, priv->r->dma_if_ctrl);
/* Enable RX done, RX overflow and TX done interrupts */
sw_w32(0xfffff, priv->r->dma_if_intr_msk);
@@ -752,7 +755,7 @@ static void rtl838x_hw_en_rxtx(struct rtl838x_eth_priv *priv)
static void rtl839x_hw_en_rxtx(struct rtl838x_eth_priv *priv)
{
/* Setup CPU-Port: RX Buffer */
- sw_w32(0x0000c808, priv->r->dma_if_ctrl);
+ sw_w32((DEFAULT_MTU << 5) | RX_TRUNCATE_EN_83XX, priv->r->dma_if_ctrl);
/* Enable Notify, RX done, RX overflow and TX done interrupts */
sw_w32(0x007fffff, priv->r->dma_if_intr_msk); /* Notify IRQ! */
@@ -775,8 +778,8 @@ static void rtl839x_hw_en_rxtx(struct rtl838x_eth_priv *priv)
static void rtl93xx_hw_en_rxtx(struct rtl838x_eth_priv *priv)
{
- /* Setup CPU-Port: RX Buffer truncated at 1600 Bytes */
- sw_w32(0x06400040, priv->r->dma_if_ctrl);
+ /* Setup CPU-Port: RX Buffer truncated at DEFAULT_MTU Bytes */
+ sw_w32((DEFAULT_MTU << 16) | RX_TRUNCATE_EN_93XX, priv->r->dma_if_ctrl);
for (int i = 0; i < priv->rxrings; i++) {
int pos = (i % 3) * 10;
@@ -2415,7 +2418,7 @@ static int __init rtl838x_eth_probe(struct platform_device *pdev)
dev->ethtool_ops = &rtl838x_ethtool_ops;
dev->min_mtu = ETH_ZLEN;
- dev->max_mtu = 1536;
+ dev->max_mtu = DEFAULT_MTU;
dev->features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM;
dev->hw_features = NETIF_F_RXCSUM;
diff --git a/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h b/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h
index 7a5ff678a4..47ed286aa4 100644
--- a/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h
+++ b/target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h
@@ -216,6 +216,9 @@
/* Registers of the internal Serdes of the 8380 */
#define RTL838X_SDS4_FIB_REG0 (0xF800)
+/* Default MTU with jumbo frames support */
+#define DEFAULT_MTU 9000
+
inline int rtl838x_mac_port_ctrl(int p)
{
return RTL838X_MAC_PORT_CTRL + (p << 7);