From 078c47d79ca06dc558f5a275936bfe88c4c5503c Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Sun, 13 Jan 2019 16:51:20 +0100
Subject: [PATCH] cpu/esp32: fixes frame size handling in esp_wifi
The size of received and transmitted frames was stored in an uint8_t, which did not allow to process frames larger than 255 octets. However, WiFi has an MTU of 1500 octets.
---
cpu/esp32/esp-wifi/esp_wifi_netdev.c | 2 +-
cpu/esp32/esp-wifi/esp_wifi_netdev.h | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/cpu/esp32/esp-wifi/esp_wifi_netdev.c b/cpu/esp32/esp-wifi/esp_wifi_netdev.c
index 218e0d0a72..f3b461f82e 100644
--- a/cpu/esp32/esp-wifi/esp_wifi_netdev.c
+++ b/cpu/esp32/esp-wifi/esp_wifi_netdev.c
@@ -298,7 +298,7 @@ static int _esp_wifi_recv(netdev_t *netdev, void *buf, size_t len, void *info)
mutex_lock(&dev->dev_lock);
- uint8_t size = dev->rx_len;
+ uint16_t size = dev->rx_len;
if (!buf && !len) {
/* return the size without dropping received data */
diff --git a/cpu/esp32/esp-wifi/esp_wifi_netdev.h b/cpu/esp32/esp-wifi/esp_wifi_netdev.h
index d478423a16..a0900c54dd 100644
--- a/cpu/esp32/esp-wifi/esp_wifi_netdev.h
+++ b/cpu/esp32/esp-wifi/esp_wifi_netdev.h
@@ -37,10 +37,10 @@ typedef struct
{
netdev_t netdev; /**< netdev parent struct */
- uint8_t rx_len; /**< number of bytes received */
+ uint16_t rx_len; /**< number of bytes received */
uint8_t rx_buf[ETHERNET_DATA_LEN]; /**< receive buffer */
- uint8_t tx_len; /**< number of bytes in transmit buffer */
+ uint16_t tx_len; /**< number of bytes in transmit buffer */
uint8_t tx_buf[ETHERNET_DATA_LEN]; /**< transmit buffer */
uint32_t event; /**< received event */
--
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