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src/net/stream.c

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+/*
+ * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/**
+ * @file
+ *
+ * Stream API
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <gpxe/stream.h>
+
+/**
+ * Send data via connection
+ *
+ * @v app		Stream application
+ * @v data		Data to send
+ * @v len		Length of data
+ * @ret rc		Return status code
+ *
+ * This method should be called only in the context of an
+ * application's senddata() method.
+ */
+int stream_send ( struct stream_application *app, void *data, size_t len ) {
+	struct stream_connection *conn = app->conn;
+	int rc;
+
+	DBGC2 ( app, "Stream %p sending %zd bytes\n", app, len );
+
+	/* Check connection actually exists */
+	if ( ! conn ) {
+		DBGC ( app, "Stream %p has no connection\n", app );
+		return -ENOTCONN;
+	}
+
+	/* Send data via connection */
+	if ( ( rc = conn->op->send ( conn, data, len ) ) != 0 ) {
+		DBGC ( app, "Stream %p failed to send %zd bytes: %s\n",
+		       app, len, strerror ( rc ) );
+		return rc;
+	}
+
+	return 0;
+}