2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
9 #include <linux/module.h>
10 #include <linux/proc_fs.h>
11 #include <linux/kernel.h>
12 #include <linux/interrupt.h>
14 #include <linux/types.h>
15 #include <linux/sysctl.h>
16 #include <linux/string.h>
17 #include <linux/socket.h>
18 #include <linux/errno.h>
19 #include <linux/fcntl.h>
21 #include <linux/if_ether.h>
22 #include <linux/slab.h>
26 #include <linux/inet.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/if_arp.h>
30 #include <linux/skbuff.h>
38 static int rose_header(struct sk_buff *skb, struct net_device *dev,
40 const void *daddr, const void *saddr, unsigned int len)
42 unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2);
45 memcpy(buff + 7, daddr, dev->addr_len);
47 *buff++ = ROSE_GFI | ROSE_Q_BIT;
59 static int rose_set_mac_address(struct net_device *dev, void *addr)
61 struct sockaddr *sa = addr;
64 if (!memcmp(dev->dev_addr, sa->sa_data, dev->addr_len))
67 if (dev->flags & IFF_UP) {
68 err = rose_add_loopback_node((rose_address *)sa->sa_data);
72 rose_del_loopback_node((rose_address *)dev->dev_addr);
75 memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
80 static int rose_open(struct net_device *dev)
84 err = rose_add_loopback_node((rose_address *)dev->dev_addr);
88 netif_start_queue(dev);
93 static int rose_close(struct net_device *dev)
95 netif_stop_queue(dev);
96 rose_del_loopback_node((rose_address *)dev->dev_addr);
100 static netdev_tx_t rose_xmit(struct sk_buff *skb, struct net_device *dev)
102 struct net_device_stats *stats = &dev->stats;
103 unsigned int len = skb->len;
105 if (!netif_running(dev)) {
106 printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n");
107 return NETDEV_TX_BUSY;
110 if (!rose_route_frame(skb, NULL)) {
117 stats->tx_bytes += len;
121 static const struct header_ops rose_header_ops = {
122 .create = rose_header,
125 static const struct net_device_ops rose_netdev_ops = {
126 .ndo_open = rose_open,
127 .ndo_stop = rose_close,
128 .ndo_start_xmit = rose_xmit,
129 .ndo_set_mac_address = rose_set_mac_address,
132 void rose_setup(struct net_device *dev)
134 dev->mtu = ROSE_MAX_PACKET_SIZE - 2;
135 dev->netdev_ops = &rose_netdev_ops;
137 dev->header_ops = &rose_header_ops;
138 dev->hard_header_len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
139 dev->addr_len = ROSE_ADDR_LEN;
140 dev->type = ARPHRD_ROSE;
142 /* New-style flags. */
143 dev->flags = IFF_NOARP;