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realtek: add IGMP/MLD snooping support 

This adds snooping support for IGMP and MLD on RTL8380/90/9300
by trapping IGMP and MLD packets to the CPU.

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>
This commit is contained in:
Birger Koblitz 2021-04-29 22:59:55 +02:00 committed by Petr Štetiar
parent 9e8d62e421
commit cf4edabefd
2 changed files with 7 additions and 4 deletions
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10
target/linux/realtek/files-5.4/drivers/net/ethernet/rtl838x_eth.c
View File

@ -897,28 +897,30 @@ static int rtl838x_eth_open(struct net_device *ndev)
switch (priv->family_id) {
case RTL8380_FAMILY_ID:
rtl838x_hw_en_rxtx(priv);
/* Trap IGMP traffic to CPU-Port */
/* Trap IGMP/MLD traffic to CPU-Port */
sw_w32(0x3, RTL838X_SPCL_TRAP_IGMP_CTRL);
/* Flush learned FDB entries on link down of a port */
sw_w32_mask(0, BIT(7), RTL838X_L2_CTRL_0);
break;
case RTL8390_FAMILY_ID:
rtl839x_hw_en_rxtx(priv);
// Trap MLD and IGMP messages to CPU_PORT
sw_w32(0x3, RTL839X_SPCL_TRAP_IGMP_CTRL);
/* Flush learned FDB entries on link down of a port */
sw_w32_mask(0, BIT(7), RTL839X_L2_CTRL_0);
break;
case RTL9300_FAMILY_ID:
rtl93xx_hw_en_rxtx(priv);
/* Flush learned FDB entries on link down of a port */
sw_w32_mask(0, BIT(7), RTL930X_L2_CTRL);
sw_w32_mask(BIT(28), 0, RTL930X_L2_PORT_SABLK_CTRL);
sw_w32_mask(BIT(28), 0, RTL930X_L2_PORT_DABLK_CTRL);
// Trap MLD and IGMP messages to CPU_PORT
sw_w32((0x2 << 3) | 0x2, RTL930X_VLAN_APP_PKT_CTRL);
break;
case RTL9310_FAMILY_ID:
rtl93xx_hw_en_rxtx(priv);
// TODO: Add trapping of IGMP frames to CPU-port
break;
}

1
target/linux/realtek/files-5.4/drivers/net/ethernet/rtl838x_eth.h
View File

@ -177,6 +177,7 @@
#define RTL839X_RMA_CTRL_2 (0x1208)
#define RTL839X_RMA_CTRL_3 (0x120C)
#define RTL930X_VLAN_APP_PKT_CTRL (0xA23C)
#define RTL930X_RMA_CTRL_0 (0x9E60)
#define RTL930X_RMA_CTRL_1 (0x9E64)
#define RTL930X_RMA_CTRL_2 (0x9E68)