From 3759cc72abc76789b9231c9c352392ed638202d3 Mon Sep 17 00:00:00 2001
From: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>
Date: Mon, 20 Apr 2026 15:22:32 -0300
Subject: [PATCH] arch/xtensa: properly set carrier on/off on espnow driver

In esp_espnow_pktradio.c, after ESP-NOW is successfully initialized in espnow_ifup, call netdev_carrier_on(dev).
In espnow_ifdown, call netdev_carrier_off(dev).

Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>
---
 arch/xtensa/src/common/espressif/esp_espnow_pktradio.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/xtensa/src/common/espressif/esp_espnow_pktradio.c b/arch/xtensa/src/common/espressif/esp_espnow_pktradio.c
index c9fa483e098..02ca3721e1a 100644
--- a/arch/xtensa/src/common/espressif/esp_espnow_pktradio.c
+++ b/arch/xtensa/src/common/espressif/esp_espnow_pktradio.c
@@ -42,6 +42,7 @@
 #include <nuttx/net/ip.h>
 #include <nuttx/spinlock.h>
 #include <nuttx/net/radiodev.h>
+#include <nuttx/net/netdev.h>
 #include <nuttx/net/sixlowpan.h>
 #include <nuttx/wireless/pktradio.h>
 #include <nuttx/wdog.h>
@@ -1098,6 +1099,11 @@ static int espnow_ifup(FAR struct net_driver_s *dev)
 
   priv->txblocked = false;
   priv->bifup = true;
+
+  /* Link is ready for 6LoWPAN; set IFF_RUNNING (ifconfig "RUNNING"). */
+
+  netdev_carrier_on(dev);
+
   return OK;
 }
 
@@ -1148,6 +1154,8 @@ static int espnow_ifdown(FAR struct net_driver_s *dev)
 
   priv->bifup = false;
 
+  netdev_carrier_off(dev);
+
   return OK;
 }