From 25505373cea4922842b70f20914c3d0ae1901976 Mon Sep 17 00:00:00 2001
From: Rohan Sahay <103027015+rosahay-silabs@users.noreply.github.com>
Date: Tue, 11 Oct 2022 19:51:03 +0530
Subject: [PATCH] [EFR32] Adds lwip ipv6 MLD support for neighborhood discovery
 protocol (#23105)

* Adds LWIP_IPV6_MLD support for Neighborhood discovery

* Adds temporary fix for NS loopback issue
---
 src/lwip/efr32/lwipopts-rs911x.h       | 1 +
 src/lwip/efr32/lwipopts-wf200.h        | 1 +
 src/platform/EFR32/wifi/ethernetif.cpp | 4 ++++
 src/platform/EFR32/wifi/lwip_netif.cpp | 4 ++++
 4 files changed, 10 insertions(+)

diff --git a/src/lwip/efr32/lwipopts-rs911x.h b/src/lwip/efr32/lwipopts-rs911x.h
index 355ab90dd1e462..2a6de667ba75c2 100644
--- a/src/lwip/efr32/lwipopts-rs911x.h
+++ b/src/lwip/efr32/lwipopts-rs911x.h
@@ -99,6 +99,7 @@
 #define LWIP_IPV6_REASS (0)
 #define LWIP_IPV6_DHCP6 0
 #define LWIP_IPV6_AUTOCONFIG (1)
+#define LWIP_IPV6_DUP_DETECT_ATTEMPTS 0 // TODO: Enable this after a fix for NS loopback
 #define LWIP_IPV6_ROUTER_SUPPORT 1
 #define LWIP_ND6_LISTEN_RA 1
 
diff --git a/src/lwip/efr32/lwipopts-wf200.h b/src/lwip/efr32/lwipopts-wf200.h
index 60844a749f3e99..5825a5af87b53f 100644
--- a/src/lwip/efr32/lwipopts-wf200.h
+++ b/src/lwip/efr32/lwipopts-wf200.h
@@ -99,6 +99,7 @@
 #define LWIP_IPV6_REASS (0)
 #define LWIP_IPV6_DHCP6 0
 #define LWIP_IPV6_AUTOCONFIG (1)
+#define LWIP_IPV6_DUP_DETECT_ATTEMPTS 0 // TODO: Enable this after a fix for NS loopback
 #define LWIP_IPV6_ROUTER_SUPPORT 1
 #define LWIP_ND6_LISTEN_RA 1
 
diff --git a/src/platform/EFR32/wifi/ethernetif.cpp b/src/platform/EFR32/wifi/ethernetif.cpp
index 318f8a272ece1b..36221fbfd29de4 100644
--- a/src/platform/EFR32/wifi/ethernetif.cpp
+++ b/src/platform/EFR32/wifi/ethernetif.cpp
@@ -97,6 +97,10 @@ static void low_level_init(struct netif * netif)
 
     /* Accept broadcast address and ARP traffic */
     netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP;
+
+#if LWIP_IPV6_MLD
+    netif->flags |= NETIF_FLAG_MLD6;
+#endif /* LWIP_IPV6_MLD */
 }
 
 /********************************************************************************
diff --git a/src/platform/EFR32/wifi/lwip_netif.cpp b/src/platform/EFR32/wifi/lwip_netif.cpp
index a13a9c35abcc25..cd3a34292cf85a 100644
--- a/src/platform/EFR32/wifi/lwip_netif.cpp
+++ b/src/platform/EFR32/wifi/lwip_netif.cpp
@@ -91,6 +91,10 @@ void wfx_lwip_set_sta_link_up(void)
     /*
      * Enable IPV6
      */
+
+#if LWIP_IPV6_AUTOCONFIG
+    sta_netif.ip6_autoconfig_enabled = 1;
+#endif /* LWIP_IPV6_AUTOCONFIG */
     netif_create_ip6_linklocal_address(&sta_netif, MAC_48_BIT_SET);
 }