Update ftp.c and hello.c to use the generic async_operations API.

src/include/gpxe/ftp.h

  */
 
 #include <stdint.h>
+#include <gpxe/async.h>
 #include <gpxe/tcp.h>
 
+/** FTP default port */
+#define FTP_PORT 21
+
 /**
  * FTP states
  *
 	 * remote server.
 	 */
 	void ( *callback ) ( char *data, size_t len );
-	/** Completion indicator
-	 *
-	 * This will be set to a non-zero value when the transfer is
-	 * complete.  A negative value indicates an error.
-	 */
-	int complete;
+	/** Asynchronous operation for this FTP operation */
+	struct async_operation aop;
 
 	/** Current state */
 	enum ftp_state state;
 	struct tcp_connection tcp_data;
 };
 
-extern void ftp_connect ( struct ftp_request *ftp );
+struct async_operation * ftp_get ( struct ftp_request *ftp );
 
-#endif
+#endif /* _GPXE_FTP_H */

src/include/gpxe/hello.h

 
 #include <stdint.h>
 #include <gpxe/tcp.h>
+#include <gpxe/async.h>
 
 enum hello_state {
 	HELLO_SENDING_MESSAGE = 1,
 	 * remote server.
 	 */
 	void ( *callback ) ( char *data, size_t len );
-	/** Connection complete indicator */
-	int complete;
+	/** Asynchronous operation */
+	struct async_operation aop;
 };
 
-extern void hello_connect ( struct hello_request *hello );
+extern struct async_operation * say_hello ( struct hello_request *hello );
 
 #endif

src/net/tcp/ftp.c

 #include <vsprintf.h>
 #include <assert.h>
 #include <errno.h>
+#include <gpxe/async.h>
 #include <gpxe/ftp.h>
 
 /** @file
  * Mark FTP request as complete
  *
  * @v ftp		FTP request
- * @v complete		Completion indicator
+ * @v rc		Return status code
  *
  */
-static void ftp_complete ( struct ftp_request *ftp, int complete ) {
-	ftp->complete = complete;
+static void ftp_done ( struct ftp_request *ftp, int rc ) {
 	tcp_close ( &ftp->tcp_data );
 	tcp_close ( &ftp->tcp );
+	async_done ( &ftp->aop, rc );
 }
 
 /**
 
  err:
 	/* Flag protocol error and close connections */
-	ftp_complete ( ftp, -EPROTO );
+	ftp_done ( ftp, -EPROTO );
 }
 
 /**
 static void ftp_closed ( struct tcp_connection *conn, int status ) {
 	struct ftp_request *ftp = tcp_to_ftp ( conn );
 
-	ftp_complete ( ftp, status ? status : 1 );
+	ftp_done ( ftp, status );
 }
 
 /** FTP control channel operations */
 	struct ftp_request *ftp = tcp_to_ftp_data ( conn );
 
 	if ( status )
-		ftp_complete ( ftp, status );
+		ftp_done ( ftp, status );
 }
 
 /**
  *
  * @v ftp	FTP request
  */
-void ftp_connect ( struct ftp_request *ftp ) {
+struct async_operation * ftp_get ( struct ftp_request *ftp ) {
 	ftp->tcp.tcp_op = &ftp_tcp_operations;
 	ftp->tcp_data.tcp_op = &ftp_data_tcp_operations;
 	ftp->recvbuf = ftp->status_text;
 	ftp->recvsize = sizeof ( ftp->status_text ) - 1;
 	tcp_connect ( &ftp->tcp );
+	return &ftp->aop;
 }

src/net/tcp/hello.c

 #include <string.h>
 #include <vsprintf.h>
 #include <assert.h>
+#include <gpxe/async.h>
 #include <gpxe/hello.h>
 
 /** @file
  * message (hello_request::message).  Any data received from the
  * server will be passed to the callback function,
  * hello_request::callback(), and once the connection has been closed,
- * hello_request::complete will be set to a non-zero value.
+ * the asynchronous operation associated with the request will be
+ * marked as complete.
  *
  * To use this code, do something like:
  *
  *   hello.sin.sin_addr.s_addr = ... server IP address ...
  *   hello.sin.sin_port = ... server port ...
  *
- *   hello_connect ( &hello );
- *   while ( ! hello.completed ) {
- *     run_tcpip();
- *   }
+ *   rc = async_wait ( say_hello ( &hello ) );
  *
  * @endcode
  *
 static void hello_closed ( struct tcp_connection *conn, int status ) {
 	struct hello_request *hello = tcp_to_hello ( conn );
 
-	hello->complete = ( status ? status : 1 );
+	async_done ( &hello->aop, status );
 }
 
 static void hello_connected ( struct tcp_connection *conn ) {
 	hello->callback ( data, len );
 }
 
-static void hello_senddata ( struct tcp_connection *conn ) {
+static void hello_senddata ( struct tcp_connection *conn,
+			     void *buf __unused, size_t len __unused ) {
 	struct hello_request *hello = tcp_to_hello ( conn );
 
 	tcp_send ( conn, hello->message, hello->remaining );
  *
  * @v hello	"Hello world" request
  */
-void hello_connect ( struct hello_request *hello ) {
+struct async_operation * say_hello ( struct hello_request *hello ) {
 	hello->tcp.tcp_op = &hello_tcp_operations;
 	tcp_connect ( &hello->tcp );
+	return &hello->aop;
 }

src/tests/ftptest.c

+#include <stdint.h>
+#include <string.h>
+#include <byteswap.h>
+#include <console.h>
+#include <vsprintf.h>
+#include <gpxe/async.h>
+#include <gpxe/ftp.h>
+
+static void test_ftp_callback ( char *data, size_t len ) {
+	unsigned int i;
+	char c;
+
+	for ( i = 0 ; i < len ; i++ ) {
+		c = data[i];
+		if ( c == '\r' ) {
+			/* Print nothing */
+		} else if ( ( c == '\n' ) || ( c >= 32 ) || ( c <= 126 ) ) {
+			putchar ( c );
+		} else {
+			putchar ( '.' );
+		}
+	}
+}
+
+void test_ftp ( struct in_addr server, const char *filename ) {
+	struct ftp_request ftp;
+	int rc;
+
+	printf ( "FTP fetching %s:%s\n", inet_ntoa ( server ), filename );
+	
+	memset ( &ftp, 0, sizeof ( ftp ) );
+	ftp.tcp.sin.sin_addr.s_addr = server.s_addr;
+	ftp.tcp.sin.sin_port = htons ( FTP_PORT );
+	ftp.filename = filename;
+	ftp.callback = test_ftp_callback;
+
+	rc = async_wait ( ftp_get ( &ftp ) );
+	if ( rc ) {
+		printf ( "FTP fetch failed\n" );
+	}
+}

src/tests/hellotest.c

+#include <stdint.h>
+#include <string.h>
+#include <byteswap.h>
+#include <console.h>
+#include <vsprintf.h>
+#include <gpxe/async.h>
+#include <gpxe/hello.h>
+
+static void test_hello_callback ( char *data, size_t len ) {
+	unsigned int i;
+	char c;
+
+	for ( i = 0 ; i < len ; i++ ) {
+		c = data[i];
+		if ( c == '\r' ) {
+			/* Print nothing */
+		} else if ( ( c == '\n' ) || ( c >= 32 ) || ( c <= 126 ) ) {
+			putchar ( c );
+		} else {
+			putchar ( '.' );
+		}
+	}
+}
+
+void test_hello ( struct sockaddr_in *server, const char *message ) {
+	struct hello_request hello;
+	int rc;
+
+	printf ( "Saying \"%s\" to %s:%d\n", message,
+		 inet_ntoa ( server->sin_addr ), ntohs ( server->sin_port ) );
+	
+	memset ( &hello, 0, sizeof ( hello ) );
+	hello.tcp.sin = *server;
+	hello.message = message;
+	hello.callback = test_hello_callback;
+
+	rc = async_wait ( say_hello ( &hello ) );
+	if ( rc ) {
+		printf ( "HELLO fetch failed\n" );
+	}
+}