--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/master/debug.c Mon May 29 09:08:56 2006 +0000
@@ -0,0 +1,189 @@
+/******************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 2006 Florian Pose, Ingenieurgemeinschaft IgH
+ *
+ * This file is part of the IgH EtherCAT Master.
+ *
+ * The IgH EtherCAT Master 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 (at your option) any later version.
+ *
+ * The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * The right to use EtherCAT Technology is granted and comes free of
+ * charge under condition of compatibility of product made by
+ * Licensee. People intending to distribute/sell products based on the
+ * code, have to sign an agreement to guarantee that products using
+ * software based on IgH EtherCAT master stay compatible with the actual
+ * EtherCAT specification (which are released themselves as an open
+ * standard) as the (only) precondition to have the right to use EtherCAT
+ * Technology, IP and trade marks.
+ *
+ *****************************************************************************/
+
+/**
+ \file
+ Ethernet interface for debugging purposes.
+*/
+
+/*****************************************************************************/
+
+#include <linux/etherdevice.h>
+
+#include "globals.h"
+#include "debug.h"
+
+/*****************************************************************************/
+
+// net_device functions
+int ec_dbgdev_open(struct net_device *);
+int ec_dbgdev_stop(struct net_device *);
+struct net_device_stats *ec_dbgdev_stats(struct net_device *);
+
+/*****************************************************************************/
+
+/**
+ Debug constructor.
+ Initializes the debug object, creates a net_device and registeres it.
+*/
+
+int ec_debug_init(ec_debug_t *dbg /**< debug object */)
+{
+ int result;
+
+ dbg->opened = 0;
+ memset(&dbg->stats, 0, sizeof(struct net_device_stats));
+
+ if (!(dbg->dev =
+ alloc_netdev(sizeof(ec_debug_t *), "ec%d", ether_setup))) {
+ EC_ERR("Unable to allocate net_device for debug object!\n");
+ goto out_return;
+ }
+
+ // initialize net_device
+ dbg->dev->open = ec_dbgdev_open;
+ dbg->dev->stop = ec_dbgdev_stop;
+ dbg->dev->get_stats = ec_dbgdev_stats;
+
+ // initialize private data
+ *((ec_debug_t **) netdev_priv(dbg->dev)) = dbg;
+
+ // connect the net_device to the kernel
+ if ((result = register_netdev(dbg->dev))) {
+ EC_ERR("Unable to register net_device: error %i\n", result);
+ goto out_free;
+ }
+
+ return 0;
+
+ out_free:
+ free_netdev(dbg->dev);
+ dbg->dev = NULL;
+ out_return:
+ return -1;
+}
+
+/*****************************************************************************/
+
+/**
+ Debug destructor.
+ Unregisteres the net_device and frees allocated memory.
+*/
+
+void ec_debug_clear(ec_debug_t *dbg /**< debug object */)
+{
+ if (dbg->dev) {
+ unregister_netdev(dbg->dev);
+ free_netdev(dbg->dev);
+ }
+}
+
+/*****************************************************************************/
+
+/**
+ Sends frame data to the interface.
+*/
+
+void ec_debug_send(ec_debug_t *dbg, /**< debug object */
+ const uint8_t *data, /**< frame data */
+ size_t size /**< size of the frame data */
+ )
+{
+ struct sk_buff *skb;
+
+ if (!dbg->opened) return;
+
+ // allocate socket buffer
+ if (!(skb = dev_alloc_skb(size))) {
+ dbg->stats.rx_dropped++;
+ return;
+ }
+
+ // copy frame contents into socket buffer
+ memcpy(skb_put(skb, size), data, size);
+
+ // update device statistics
+ dbg->stats.rx_packets++;
+ dbg->stats.rx_bytes += size;
+
+ // pass socket buffer to network stack
+ skb->dev = dbg->dev;
+ skb->protocol = eth_type_trans(skb, dbg->dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ netif_rx(skb);
+}
+
+/******************************************************************************
+ * NET_DEVICE functions
+ *****************************************************************************/
+
+/**
+ Opens the virtual network device.
+*/
+
+int ec_dbgdev_open(struct net_device *dev /**< debug net_device */)
+{
+ ec_debug_t *dbg = *((ec_debug_t **) netdev_priv(dev));
+ dbg->opened = 1;
+ EC_INFO("debug interface %s opened.\n", dev->name);
+ return 0;
+}
+
+/*****************************************************************************/
+
+/**
+ Stops the virtual network device.
+*/
+
+int ec_dbgdev_stop(struct net_device *dev /**< debug net_device */)
+{
+ ec_debug_t *dbg = *((ec_debug_t **) netdev_priv(dev));
+ dbg->opened = 0;
+ EC_INFO("debug interface %s stopped.\n", dev->name);
+ return 0;
+}
+
+/*****************************************************************************/
+
+/**
+ Gets statistics about the virtual network device.
+*/
+
+struct net_device_stats *ec_dbgdev_stats(struct net_device *dev
+ /**< debug net_device */)
+{
+ ec_debug_t *dbg = *((ec_debug_t **) netdev_priv(dev));
+ return &dbg->stats;
+}
+
+/*****************************************************************************/