From 538aac00ad1316347f9faeb8f2af5f4bed1ed2e6 Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Wed, 23 Jan 2019 10:33:26 +0100
Subject: [PATCH] cpu/esp8266: fix of allocated pbuf in esp_wifi
---
cpu/esp8266/esp-wifi/esp_wifi_netdev.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/cpu/esp8266/esp-wifi/esp_wifi_netdev.c b/cpu/esp8266/esp-wifi/esp_wifi_netdev.c
index cd1d58561f..19abe687be 100644
--- a/cpu/esp8266/esp-wifi/esp_wifi_netdev.c
+++ b/cpu/esp8266/esp-wifi/esp_wifi_netdev.c
@@ -68,6 +68,9 @@
#define MAC_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_STR_ARG(m) m[0], m[1], m[2], m[3], m[4], m[5]
+
+#define PBUF_IEEE80211_HLEN (36)
+
/** Timer used to reconnect automatically after 20 seconds if not connected */
static xtimer_t _esp_wifi_reconnect_timer;
@@ -328,7 +331,7 @@ static int IRAM _send(netdev_t *netdev, const iolist_t *iolist)
struct netif *sta_netif = (struct netif *)eagle_lwip_getif(ESP_WIFI_STATION_IF);
netif_set_default(sta_netif);
- struct pbuf *pb = pbuf_alloc(PBUF_LINK, iol_len, PBUF_RAM);
+ struct pbuf *pb = pbuf_alloc(PBUF_LINK, iol_len + PBUF_IEEE80211_HLEN, PBUF_RAM);
if (pb == NULL || pb->tot_len < iol_len) {
ESP_WIFI_DEBUG("could not allocate buffer to send %d bytes ", iol_len);
/*
--
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