drivers: eth: Enable LLDP on STM32

With the current LLDP implementation in Zephyr the support for it has to
be enabled in the ethernet driver. This commit adds exactly this
capability to the STM32 HAL based ethernet driver.

Signed-off-by: Jan Krautmacher <[email protected]>

Author: jkrautmacher

drivers/ethernet/eth_stm32_hal.c

@@ -29,6 +29,7 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
 #include <zephyr/drivers/clock_control/stm32_clock_control.h>
 #include <zephyr/drivers/pinctrl.h>
 #include <zephyr/irq.h>
+#include <zephyr/net/lldp.h>
 
 #if defined(CONFIG_PTP_CLOCK_STM32_HAL)
 #include <zephyr/drivers/ptp_clock.h>
@@ -959,6 +960,8 @@ static void eth_iface_init(struct net_if *iface)
 
 	net_if_carrier_off(iface);
 
+	net_lldp_set_lldpdu(iface);
+
 	if (is_first_init) {
 		const struct eth_stm32_hal_dev_cfg *cfg = dev->config;
 		/* Now that the iface is setup, we are safe to enable IRQs. */
@@ -980,6 +983,9 @@ static enum ethernet_hw_caps eth_stm32_hal_get_capabilities(const struct device
 #endif
 #if defined(CONFIG_PTP_CLOCK_STM32_HAL)
 		| ETHERNET_PTP
+#endif
+#if defined(CONFIG_NET_LLDP)
+		| ETHERNET_LLDP
 #endif
 		;
 }