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cpu/esp8266: avoid _esp_wifi_recv_cb during send

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To avoid conflicts on receiption of a frame while sending, _esp_wifi_recv_cb should not executed while a frame is in transmission
This commit is contained in:
Gunar Schorcht 2019-01-23 10:28:06 +01:00 committed by Schorcht
parent 78e0aa2a77
commit 96d0910d33
1 changed files with 4 additions and 3 deletions
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7
cpu/esp8266/esp-wifi/esp_wifi_netdev.c
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@ -88,6 +88,9 @@ static const struct station_config station_cfg = {
extern struct netif * eagle_lwip_getif(uint8 index); extern struct netif * eagle_lwip_getif(uint8 index);
/** guard variable to avoid reentrance to _send */
static bool _in_send = false;
/** guard variable to avoid reentrance to _esp_wifi_recv_cb */ /** guard variable to avoid reentrance to _esp_wifi_recv_cb */
static bool _in_esp_wifi_recv_cb = false; static bool _in_esp_wifi_recv_cb = false;
@ -112,7 +115,7 @@ void _esp_wifi_recv_cb(struct pbuf *pb, struct netif *netif)
* by a mutex because `esp_wifi_recv_cb` would be reentered from same * by a mutex because `esp_wifi_recv_cb` would be reentered from same
* thread context. * thread context.
*/ */
if (_in_esp_wifi_recv_cb) { if (_in_esp_wifi_recv_cb || _in_send) {
pbuf_free(pb); pbuf_free(pb);
return; return;
} }
@ -242,8 +245,6 @@ uint8_t _send_pkt_buf[ETHERNET_MAX_LEN];
extern err_t ieee80211_output_pbuf(struct netif *netif, struct pbuf *p); extern err_t ieee80211_output_pbuf(struct netif *netif, struct pbuf *p);
/** guard variable to avoid reentrance to _send */ /** guard variable to avoid reentrance to _send */
static bool _in_send = false;
static int _send(netdev_t *netdev, const iolist_t *iolist) static int _send(netdev_t *netdev, const iolist_t *iolist)
{ {
ESP_WIFI_DEBUG("%p %p", netdev, iolist); ESP_WIFI_DEBUG("%p %p", netdev, iolist);