[lwip]判定eth_rx是否为空,为空不执行。

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