Contributors: 13
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Linus Torvalds (pre-git) |
547 |
75.66% |
33 |
60.00% |
| Ralf Baechle |
87 |
12.03% |
6 |
10.91% |
| Stephen Hemminger |
56 |
7.75% |
5 |
9.09% |
| Jeroen Vreeken |
10 |
1.38% |
1 |
1.82% |
| David S. Miller |
6 |
0.83% |
1 |
1.82% |
| Jakub Kiciński |
4 |
0.55% |
2 |
3.64% |
| Arnaldo Carvalho de Melo |
3 |
0.41% |
1 |
1.82% |
| Jason Xing |
3 |
0.41% |
1 |
1.82% |
| Thomas Gleixner |
2 |
0.28% |
1 |
1.82% |
| Patrick McHardy |
2 |
0.28% |
1 |
1.82% |
| Eric Dumazet |
1 |
0.14% |
1 |
1.82% |
| Linus Torvalds |
1 |
0.14% |
1 |
1.82% |
| Fabian Frederick |
1 |
0.14% |
1 |
1.82% |
| Total |
723 |
|
55 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Copyright Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
*/
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/kernel.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> /* For the statistics structure. */
#include <linux/slab.h>
#include <linux/uaccess.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/netrom.h>
/*
* Only allow IP over NET/ROM frames through if the netrom device is up.
*/
int nr_rx_ip(struct sk_buff *skb, struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
if (!netif_running(dev)) {
stats->rx_dropped++;
return 0;
}
stats->rx_packets++;
stats->rx_bytes += skb->len;
skb->protocol = htons(ETH_P_IP);
/* Spoof incoming device */
skb->dev = dev;
skb->mac_header = skb->network_header;
skb_reset_network_header(skb);
skb->pkt_type = PACKET_HOST;
netif_rx(skb);
return 1;
}
static int nr_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,
const void *daddr, const void *saddr, unsigned int len)
{
unsigned char *buff = skb_push(skb, NR_NETWORK_LEN + NR_TRANSPORT_LEN);
memcpy(buff, (saddr != NULL) ? saddr : dev->dev_addr, dev->addr_len);
buff[6] &= ~AX25_CBIT;
buff[6] &= ~AX25_EBIT;
buff[6] |= AX25_SSSID_SPARE;
buff += AX25_ADDR_LEN;
if (daddr != NULL)
memcpy(buff, daddr, dev->addr_len);
buff[6] &= ~AX25_CBIT;
buff[6] |= AX25_EBIT;
buff[6] |= AX25_SSSID_SPARE;
buff += AX25_ADDR_LEN;
*buff++ = READ_ONCE(sysctl_netrom_network_ttl_initialiser);
*buff++ = NR_PROTO_IP;
*buff++ = NR_PROTO_IP;
*buff++ = 0;
*buff++ = 0;
*buff++ = NR_PROTOEXT;
if (daddr != NULL)
return 37;
return -37;
}
static int __must_check nr_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr *sa = addr;
int err;
if (!memcmp(dev->dev_addr, sa->sa_data, dev->addr_len))
return 0;
if (dev->flags & IFF_UP) {
err = ax25_listen_register((ax25_address *)sa->sa_data, NULL);
if (err)
return err;
ax25_listen_release((const ax25_address *)dev->dev_addr, NULL);
}
dev_addr_set(dev, sa->sa_data);
return 0;
}
static int nr_open(struct net_device *dev)
{
int err;
err = ax25_listen_register((const ax25_address *)dev->dev_addr, NULL);
if (err)
return err;
netif_start_queue(dev);
return 0;
}
static int nr_close(struct net_device *dev)
{
ax25_listen_release((const ax25_address *)dev->dev_addr, NULL);
netif_stop_queue(dev);
return 0;
}
static netdev_tx_t nr_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
unsigned int len = skb->len;
if (!nr_route_frame(skb, NULL)) {
kfree_skb(skb);
stats->tx_errors++;
return NETDEV_TX_OK;
}
stats->tx_packets++;
stats->tx_bytes += len;
return NETDEV_TX_OK;
}
static const struct header_ops nr_header_ops = {
.create = nr_header,
};
static const struct net_device_ops nr_netdev_ops = {
.ndo_open = nr_open,
.ndo_stop = nr_close,
.ndo_start_xmit = nr_xmit,
.ndo_set_mac_address = nr_set_mac_address,
};
void nr_setup(struct net_device *dev)
{
dev->mtu = NR_MAX_PACKET_SIZE;
dev->netdev_ops = &nr_netdev_ops;
dev->header_ops = &nr_header_ops;
dev->hard_header_len = NR_NETWORK_LEN + NR_TRANSPORT_LEN;
dev->addr_len = AX25_ADDR_LEN;
dev->type = ARPHRD_NETROM;
/* New-style flags. */
dev->flags = IFF_NOARP;
}