[linux.git] / net / rose / rose_dev.c

/*
 * 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 ([email protected])
 */
#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;
}
Commit	Line	Data
1da177e4 LT	1	/*
	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.
	6	*
	7	* Copyright (C) Jonathan Naylor G4KLX ([email protected])
	8	*/
	9	#include <linux/config.h>
	10	#include <linux/module.h>
	11	#include <linux/proc_fs.h>
	12	#include <linux/kernel.h>
	13	#include <linux/sched.h>
	14	#include <linux/interrupt.h>
	15	#include <linux/fs.h>
	16	#include <linux/types.h>
	17	#include <linux/sysctl.h>
	18	#include <linux/string.h>
	19	#include <linux/socket.h>
	20	#include <linux/errno.h>
	21	#include <linux/fcntl.h>
	22	#include <linux/in.h>
	23	#include <linux/if_ether.h>
	24
	25	#include <asm/system.h>
	26	#include <asm/io.h>
	27
	28	#include <linux/inet.h>
	29	#include <linux/netdevice.h>
	30	#include <linux/etherdevice.h>
	31	#include <linux/if_arp.h>
	32	#include <linux/skbuff.h>
	33
	34	#include <net/ip.h>
	35	#include <net/arp.h>
	36
	37	#include <net/ax25.h>
	38	#include <net/rose.h>
	39
	40	static int rose_header(struct sk_buff skb, struct net_device dev, unsigned short type,
	41	void daddr, void saddr, unsigned len)
	42	{
	43	unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2);
	44
	45	*buff++ = ROSE_GFI \| ROSE_Q_BIT;
	46	*buff++ = 0x00;
	47	*buff++ = ROSE_DATA;
	48	*buff++ = 0x7F;
	49	*buff++ = AX25_P_IP;
	50
	51	if (daddr != NULL)
	52	return 37;
	53
	54	return -37;
	55	}
	56
	57	static int rose_rebuild_header(struct sk_buff *skb)
	58	{
	59	struct net_device *dev = skb->dev;
	60	struct net_device_stats *stats = netdev_priv(dev);
	61	unsigned char bp = (unsigned char )skb->data;
	62	struct sk_buff *skbn;
	63
	64	#ifdef CONFIG_INET
65	if (arp_find(bp + 7, skb)) {
66	return 1;
67	}
68
69	if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) {
70	kfree_skb(skb);
71	return 1;
72	}
73
74	if (skb->sk != NULL)
75	skb_set_owner_w(skbn, skb->sk);
76
77	kfree_skb(skb);
78
79	if (!rose_route_frame(skbn, NULL)) {
80	kfree_skb(skbn);
81	stats->tx_errors++;
82	return 1;
83	}
84
85	stats->tx_packets++;
86	stats->tx_bytes += skbn->len;
87	#endif
88	return 1;
89	}
90
91	static int rose_set_mac_address(struct net_device dev, void addr)
92	{
93	struct sockaddr *sa = addr;
94
95	rose_del_loopback_node((rose_address *)dev->dev_addr);
96
97	memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
98
99	rose_add_loopback_node((rose_address *)dev->dev_addr);
100
101	return 0;
102	}
103
104	static int rose_open(struct net_device *dev)
105	{
106	netif_start_queue(dev);
107	rose_add_loopback_node((rose_address *)dev->dev_addr);
108	return 0;
109	}
110
111	static int rose_close(struct net_device *dev)
112	{
113	netif_stop_queue(dev);
114	rose_del_loopback_node((rose_address *)dev->dev_addr);
115	return 0;
116	}
117
118	static int rose_xmit(struct sk_buff skb, struct net_device dev)
119	{
120	struct net_device_stats *stats = netdev_priv(dev);
121
122	if (!netif_running(dev)) {
123	printk(KERN_ERR "ROSE: rose_xmit - called when iface is down\n");
124	return 1;
125	}
126	dev_kfree_skb(skb);
127	stats->tx_errors++;
128	return 0;
129	}
130
131	static struct net_device_stats rose_get_stats(struct net_device dev)
132	{
133	return netdev_priv(dev);
134	}
135
136	void rose_setup(struct net_device *dev)
137	{
138	SET_MODULE_OWNER(dev);
139	dev->mtu = ROSE_MAX_PACKET_SIZE - 2;
140	dev->hard_start_xmit = rose_xmit;
141	dev->open = rose_open;
142	dev->stop = rose_close;
143
144	dev->hard_header = rose_header;
145	dev->hard_header_len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
146	dev->addr_len = ROSE_ADDR_LEN;
147	dev->type = ARPHRD_ROSE;
148	dev->rebuild_header = rose_rebuild_header;
149	dev->set_mac_address = rose_set_mac_address;
150
151	/* New-style flags. */
152	dev->flags = 0;
153	dev->get_stats = rose_get_stats;
154	}