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);
44 *buff++ = ROSE_GFI | ROSE_Q_BIT;
56 static int rose_rebuild_header(struct sk_buff *skb)
59 struct net_device *dev = skb->dev;
60 struct net_device_stats *stats = &dev->stats;
61 unsigned char *bp = (unsigned char *)skb->data;
65 if (arp_find(bp + 7, skb)) {
69 if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) {
75 skb_set_owner_w(skbn, skb->sk);
81 if (!rose_route_frame(skbn, NULL)) {
88 stats->tx_bytes += len;
93 static int rose_set_mac_address(struct net_device *dev, void *addr)
95 struct sockaddr *sa = addr;
98 if (!memcmp(dev->dev_addr, sa->sa_data, dev->addr_len))
101 if (dev->flags & IFF_UP) {
102 err = rose_add_loopback_node((rose_address *)sa->sa_data);
106 rose_del_loopback_node((rose_address *)dev->dev_addr);
109 memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
114 static int rose_open(struct net_device *dev)
118 err = rose_add_loopback_node((rose_address *)dev->dev_addr);
122 netif_start_queue(dev);
127 static int rose_close(struct net_device *dev)
129 netif_stop_queue(dev);
130 rose_del_loopback_node((rose_address *)dev->dev_addr);
134 static netdev_tx_t rose_xmit(struct sk_buff *skb, struct net_device *dev)
136 struct net_device_stats *stats = &dev->stats;
138 if (!netif_running(dev)) {
139 printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n");
140 return NETDEV_TX_BUSY;
147 static const struct header_ops rose_header_ops = {
148 .create = rose_header,
149 .rebuild = rose_rebuild_header,
152 static const struct net_device_ops rose_netdev_ops = {
153 .ndo_open = rose_open,
154 .ndo_stop = rose_close,
155 .ndo_start_xmit = rose_xmit,
156 .ndo_set_mac_address = rose_set_mac_address,
159 void rose_setup(struct net_device *dev)
161 dev->mtu = ROSE_MAX_PACKET_SIZE - 2;
162 dev->netdev_ops = &rose_netdev_ops;
164 dev->header_ops = &rose_header_ops;
165 dev->hard_header_len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
166 dev->addr_len = ROSE_ADDR_LEN;
167 dev->type = ARPHRD_ROSE;
169 /* New-style flags. */
170 dev->flags = IFF_NOARP;