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rtl838x: Enable jumbo frames by default

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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>
This commit is contained in:
Harshal Gohel 2023-11-27 17:08:04 +01:00 committed by Sander Vanheule
parent 38bec08e87
commit 3e753c45cd
2 changed files with 12 additions and 6 deletions
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15
target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.c
View File

@ -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;

3
target/linux/realtek/files-5.15/drivers/net/ethernet/rtl838x_eth.h
View File

@ -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);