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[lwip]判定eth_rx是否为空,为空不执行。

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tangyuxin 2017-11-03 11:49:08 +08:00
parent 0941957eb7
commit 28855d4fb5
1 changed files with 2 additions and 0 deletions
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2
components/net/lwip-2.0.2/src/netif/ethernetif.c
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@ -391,6 +391,8 @@ static void eth_rx_thread_entry(void* parameter)
/* receive all of buffer */ /* receive all of buffer */
while (1) while (1)
{ {
if(device->eth_rx == RT_NULL) break;
p = device->eth_rx(&(device->parent)); p = device->eth_rx(&(device->parent));
if (p != RT_NULL) if (p != RT_NULL)
{ {