改为阻塞方式读写tun。

kni_intercept.c

@@ -351,7 +351,7 @@ int tun_alloc_mq(char *dev, int queues, int *fds,char* tun_path)
 			tun_error(i,fds);
 			return -1;
 		}
-
+/*
 //20180618 add set noblock
 		flag= fcntl(fd, F_GETFL, 0);
 		if(flag<0)
@@ -363,7 +363,7 @@ int tun_alloc_mq(char *dev, int queues, int *fds,char* tun_path)
 		{
 			MESA_handle_runtime_log(g_kni_comminfo.logger, RLOG_LV_FATAL,KNI_MODULE_INIT,"fcntl():setfl error,errno is:%d,%s",errno,strerror(errno));
 		}
-
+*/
 //end
 
 		fds[i] = fd;
@@ -906,7 +906,7 @@ int tun_read_data(int fd, char* buffer, size_t size)
 
 	int ret=0;
     int max_fd = 0;
-
+/*
 	if(g_kni_switch_info.write_listq_switch == 0)
 	{
 		fd_set alive_readfd;
@@ -926,7 +926,7 @@ int tun_read_data(int fd, char* buffer, size_t size)
 			return 0;
 		}
 	}
-	
+*/	
 	recv_len = read(fd, buffer, size);
 	if(recv_len <0)
 	{