Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 220 insertions, 0 deletions

diff --git a/net/netrom/nr_dev.c b/net/netrom/nr_dev.c
new file mode 100644
index 0000000..220bf74
--- /dev/null
+++ b/net/netrom/nr_dev.c
@@ -0,0 +1,220 @@
+/*
+ * 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 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>	/* For the statistics structure. */
+
+#include <asm/system.h>
+#include <asm/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>
+
+#ifdef CONFIG_INET
+
+/*
+ *	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 = netdev_priv(dev);
+
+	if (!netif_running(dev)) {
+		stats->rx_errors++;
+		return 0;
+	}
+
+	stats->rx_packets++;
+	stats->rx_bytes += skb->len;
+
+	skb->protocol = htons(ETH_P_IP);
+
+	/* Spoof incoming device */
+	skb->dev      = dev;
+	skb->h.raw    = skb->data;
+	skb->nh.raw   = skb->data;
+	skb->pkt_type = PACKET_HOST;
+
+	ip_rcv(skb, skb->dev, NULL);
+
+	return 1;
+}
+
+
+static int nr_rebuild_header(struct sk_buff *skb)
+{
+	struct net_device *dev = skb->dev;
+	struct net_device_stats *stats = netdev_priv(dev);
+	struct sk_buff *skbn;
+	unsigned char *bp = skb->data;
+	int len;
+
+	if (arp_find(bp + 7, skb)) {
+		return 1;
+	}
+
+	bp[6] &= ~AX25_CBIT;
+	bp[6] &= ~AX25_EBIT;
+	bp[6] |= AX25_SSSID_SPARE;
+	bp    += AX25_ADDR_LEN;
+
+	bp[6] &= ~AX25_CBIT;
+	bp[6] |= AX25_EBIT;
+	bp[6] |= AX25_SSSID_SPARE;
+
+	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);
+
+	len = skbn->len;
+
+	if (!nr_route_frame(skbn, NULL)) {
+		kfree_skb(skbn);
+		stats->tx_errors++;
+	}
+
+	stats->tx_packets++;
+	stats->tx_bytes += len;
+
+	return 1;
+}
+
+#else
+
+static int nr_rebuild_header(struct sk_buff *skb)
+{
+	return 1;
+}
+
+#endif
+
+static int nr_header(struct sk_buff *skb, struct net_device *dev, unsigned short type,
+	void *daddr, void *saddr, unsigned 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++ = 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 nr_set_mac_address(struct net_device *dev, void *addr)
+{
+	struct sockaddr *sa = addr;
+
+	if (dev->flags & IFF_UP)
+		ax25_listen_release((ax25_address *)dev->dev_addr, NULL);
+
+	memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
+
+	if (dev->flags & IFF_UP)
+		ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+
+	return 0;
+}
+
+static int nr_open(struct net_device *dev)
+{
+	netif_start_queue(dev);
+	ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+	return 0;
+}
+
+static int nr_close(struct net_device *dev)
+{
+	ax25_listen_release((ax25_address *)dev->dev_addr, NULL);
+	netif_stop_queue(dev);
+	return 0;
+}
+
+static int nr_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct net_device_stats *stats = netdev_priv(dev);
+	dev_kfree_skb(skb);
+	stats->tx_errors++;
+	return 0;
+}
+
+static struct net_device_stats *nr_get_stats(struct net_device *dev)
+{
+	return netdev_priv(dev);
+}
+
+void nr_setup(struct net_device *dev)
+{
+	SET_MODULE_OWNER(dev);
+	dev->mtu		= NR_MAX_PACKET_SIZE;
+	dev->hard_start_xmit	= nr_xmit;
+	dev->open		= nr_open;
+	dev->stop		= nr_close;
+
+	dev->hard_header	= nr_header;
+	dev->hard_header_len	= NR_NETWORK_LEN + NR_TRANSPORT_LEN;
+	dev->addr_len		= AX25_ADDR_LEN;
+	dev->type		= ARPHRD_NETROM;
+	dev->tx_queue_len	= 40;
+	dev->rebuild_header	= nr_rebuild_header;
+	dev->set_mac_address    = nr_set_mac_address;
+
+	/* New-style flags. */
+	dev->flags		= 0;
+
+	dev->get_stats 		= nr_get_stats;
+}