realtek: Configure initial L2 learning setup

[openwrt/openwrt.git] / target / linux / realtek / files-5.10 / drivers / net / dsa / rtl83xx / rtl838x.c

diff --git a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
index 2d24eaa337b19fea8c9157c9ed6d4c1f54e029ce..15a486d724139a8fbf1a9d2f924c3acdb5158486 100644 (file)
--- a/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
+++ b/target/linux/realtek/files-5.10/drivers/net/dsa/rtl83xx/rtl838x.c
@@ -491,6 +491,24 @@ static void rtl838x_vlan_profile_setup(int profile)
        rtl838x_write_mcast_pmask(UNKNOWN_MC_PMASK, 0x1fffffff);
 }
 
+static void rtl838x_l2_learning_setup(void)
+{
+       /* Set portmask for broadcast traffic and unknown unicast address flooding
+        * to the reserved entry in the portmask table used also for
+        * multicast flooding */
+       sw_w32(UNKNOWN_MC_PMASK << 12 | UNKNOWN_MC_PMASK, RTL838X_L2_FLD_PMSK);
+
+       /* Enable learning constraint system-wide (bit 0), per-port (bit 1)
+        * and per vlan (bit 2) */
+       sw_w32(0x7, RTL838X_L2_LRN_CONSTRT_EN);
+
+       // Limit learning to maximum: 16k entries, after that just flood (bits 0-1)
+       sw_w32((0x3fff << 2) | 0, RTL838X_L2_LRN_CONSTRT);
+
+       // Do not trap ARP packets to CPU_PORT
+       sw_w32(0, RTL838X_SPCL_TRAP_ARP_CTRL);
+}
+
 static inline int rtl838x_vlan_port_egr_filter(int port)
 {
        return RTL838X_VLAN_PORT_EGR_FLTR;
@@ -1605,6 +1623,7 @@ const struct rtl838x_reg rtl838x_reg = {
        .pie_rule_write = rtl838x_pie_rule_write,
        .pie_rule_add = rtl838x_pie_rule_add,
        .pie_rule_rm = rtl838x_pie_rule_rm,
+       .l2_learning_setup = rtl838x_l2_learning_setup,
        .packet_cntr_read = rtl838x_packet_cntr_read,
        .packet_cntr_clear = rtl838x_packet_cntr_clear,
 };