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-rw-r--r--net/rose/rose_dev.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/net/rose/rose_dev.c b/net/rose/rose_dev.c
new file mode 100644
index 00000000000..a8ed9a1d09f
--- /dev/null
+++ b/net/rose/rose_dev.c
@@ -0,0 +1,154 @@
+/*
+ * 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
+ * (at your option) any later version.
+ *
+ * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/sysctl.h>
+#include <linux/string.h>
+#include <linux/socket.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/in.h>
+#include <linux/if_ether.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/skbuff.h>
+
+#include <net/ip.h>
+#include <net/arp.h>
+
+#include <net/ax25.h>
+#include <net/rose.h>
+
+static int rose_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
+ void *daddr, void *saddr, unsigned len)
+{
+ unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2);
+
+ *buff++ = ROSE_GFI | ROSE_Q_BIT;
+ *buff++ = 0x00;
+ *buff++ = ROSE_DATA;
+ *buff++ = 0x7F;
+ *buff++ = AX25_P_IP;
+
+ if (daddr != NULL)
+ return 37;
+
+ return -37;
+}
+
+static int rose_rebuild_header(struct sk_buff *skb)
+{
+ struct net_device *dev = skb->dev;
+ struct net_device_stats *stats = netdev_priv(dev);
+ unsigned char *bp = (unsigned char *)skb->data;
+ struct sk_buff *skbn;
+
+#ifdef CONFIG_INET
+ if (arp_find(bp + 7, skb)) {
+ return 1;
+ }
+
+ if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) {
+ kfree_skb(skb);
+ return 1;
+ }
+
+ if (skb->sk != NULL)
+ skb_set_owner_w(skbn, skb->sk);
+
+ kfree_skb(skb);
+
+ if (!rose_route_frame(skbn, NULL)) {
+ kfree_skb(skbn);
+ stats->tx_errors++;
+ return 1;
+ }
+
+ stats->tx_packets++;
+ stats->tx_bytes += skbn->len;
+#endif
+ return 1;
+}
+
+static int rose_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct sockaddr *sa = addr;
+
+ rose_del_loopback_node((rose_address *)dev->dev_addr);
+
+ memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
+
+ rose_add_loopback_node((rose_address *)dev->dev_addr);
+
+ return 0;
+}
+
+static int rose_open(struct net_device *dev)
+{
+ netif_start_queue(dev);
+ rose_add_loopback_node((rose_address *)dev->dev_addr);
+ return 0;
+}
+
+static int rose_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ rose_del_loopback_node((rose_address *)dev->dev_addr);
+ return 0;
+}
+
+static int rose_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct net_device_stats *stats = netdev_priv(dev);
+
+ if (!netif_running(dev)) {
+ printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n");
+ return 1;
+ }
+ dev_kfree_skb(skb);
+ stats->tx_errors++;
+ return 0;
+}
+
+static struct net_device_stats *rose_get_stats(struct net_device *dev)
+{
+ return netdev_priv(dev);
+}
+
+void rose_setup(struct net_device *dev)
+{
+ SET_MODULE_OWNER(dev);
+ dev->mtu = ROSE_MAX_PACKET_SIZE - 2;
+ dev->hard_start_xmit = rose_xmit;
+ dev->open = rose_open;
+ dev->stop = rose_close;
+
+ dev->hard_header = rose_header;
+ dev->hard_header_len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
+ dev->addr_len = ROSE_ADDR_LEN;
+ dev->type = ARPHRD_ROSE;
+ dev->rebuild_header = rose_rebuild_header;
+ dev->set_mac_address = rose_set_mac_address;
+
+ /* New-style flags. */
+ dev->flags = 0;
+ dev->get_stats = rose_get_stats;
+}