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path: root/drivers/net/appletalk/ipddp.c
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Diffstat (limited to 'drivers/net/appletalk/ipddp.c')
-rw-r--r--drivers/net/appletalk/ipddp.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c
deleted file mode 100644
index d558535390f9..000000000000
--- a/drivers/net/appletalk/ipddp.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * ipddp.c: IP to Appletalk-IP Encapsulation driver for Linux
- * Appletalk-IP to IP Decapsulation driver for Linux
- *
- * Authors:
- * - DDP-IP Encap by: Bradford W. Johnson <johns393@maroon.tc.umn.edu>
- * - DDP-IP Decap by: Jay Schulist <jschlst@samba.org>
- *
- * Derived from:
- * - Almost all code already existed in net/appletalk/ddp.c I just
- * moved/reorginized it into a driver file. Original IP-over-DDP code
- * was done by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
- * - skeleton.c: A network driver outline for linux.
- * Written 1993-94 by Donald Becker.
- * - dummy.c: A dummy net driver. By Nick Holloway.
- * - MacGate: A user space Daemon for Appletalk-IP Decap for
- * Linux by Jay Schulist <jschlst@samba.org>
- *
- * Copyright 1993 United States Government as represented by the
- * Director, National Security Agency.
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- */
-
-#include <linux/compat.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ip.h>
-#include <linux/atalk.h>
-#include <linux/if_arp.h>
-#include <linux/slab.h>
-#include <net/route.h>
-#include <linux/uaccess.h>
-
-#include "ipddp.h" /* Our stuff */
-
-static const char version[] = KERN_INFO "ipddp.c:v0.01 8/28/97 Bradford W. Johnson <johns393@maroon.tc.umn.edu>\n";
-
-static struct ipddp_route *ipddp_route_list;
-static DEFINE_SPINLOCK(ipddp_route_lock);
-
-#ifdef CONFIG_IPDDP_ENCAP
-static int ipddp_mode = IPDDP_ENCAP;
-#else
-static int ipddp_mode = IPDDP_DECAP;
-#endif
-
-/* Index to functions, as function prototypes. */
-static netdev_tx_t ipddp_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static int ipddp_create(struct ipddp_route *new_rt);
-static int ipddp_delete(struct ipddp_route *rt);
-static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt);
-static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
- void __user *data, int cmd);
-
-static const struct net_device_ops ipddp_netdev_ops = {
- .ndo_start_xmit = ipddp_xmit,
- .ndo_siocdevprivate = ipddp_siocdevprivate,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static struct net_device * __init ipddp_init(void)
-{
- static unsigned version_printed;
- struct net_device *dev;
- int err;
-
- dev = alloc_etherdev(0);
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- netif_keep_dst(dev);
- strcpy(dev->name, "ipddp%d");
-
- if (version_printed++ == 0)
- printk(version);
-
- /* Initialize the device structure. */
- dev->netdev_ops = &ipddp_netdev_ops;
-
- dev->type = ARPHRD_IPDDP; /* IP over DDP tunnel */
- dev->mtu = 585;
- dev->flags |= IFF_NOARP;
-
- /*
- * The worst case header we will need is currently a
- * ethernet header (14 bytes) and a ddp header (sizeof ddpehdr+1)
- * We send over SNAP so that takes another 8 bytes.
- */
- dev->hard_header_len = 14+8+sizeof(struct ddpehdr)+1;
-
- err = register_netdev(dev);
- if (err) {
- free_netdev(dev);
- return ERR_PTR(err);
- }
-
- /* Let the user now what mode we are in */
- if(ipddp_mode == IPDDP_ENCAP)
- printk("%s: Appletalk-IP Encap. mode by Bradford W. Johnson <johns393@maroon.tc.umn.edu>\n",
- dev->name);
- if(ipddp_mode == IPDDP_DECAP)
- printk("%s: Appletalk-IP Decap. mode by Jay Schulist <jschlst@samba.org>\n",
- dev->name);
-
- return dev;
-}
-
-
-/*
- * Transmit LLAP/ELAP frame using aarp_send_ddp.
- */
-static netdev_tx_t ipddp_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct rtable *rtable = skb_rtable(skb);
- __be32 paddr = 0;
- struct ddpehdr *ddp;
- struct ipddp_route *rt;
- struct atalk_addr *our_addr;
-
- if (rtable->rt_gw_family == AF_INET)
- paddr = rtable->rt_gw4;
-
- spin_lock(&ipddp_route_lock);
-
- /*
- * Find appropriate route to use, based only on IP number.
- */
- for(rt = ipddp_route_list; rt != NULL; rt = rt->next)
- {
- if(rt->ip == paddr)
- break;
- }
- if(rt == NULL) {
- spin_unlock(&ipddp_route_lock);
- return NETDEV_TX_OK;
- }
-
- our_addr = atalk_find_dev_addr(rt->dev);
-
- if(ipddp_mode == IPDDP_DECAP)
- /*
- * Pull off the excess room that should not be there.
- * This is due to a hard-header problem. This is the
- * quick fix for now though, till it breaks.
- */
- skb_pull(skb, 35-(sizeof(struct ddpehdr)+1));
-
- /* Create the Extended DDP header */
- ddp = (struct ddpehdr *)skb->data;
- ddp->deh_len_hops = htons(skb->len + (1<<10));
- ddp->deh_sum = 0;
-
- /*
- * For Localtalk we need aarp_send_ddp to strip the
- * long DDP header and place a shot DDP header on it.
- */
- if(rt->dev->type == ARPHRD_LOCALTLK)
- {
- ddp->deh_dnet = 0; /* FIXME more hops?? */
- ddp->deh_snet = 0;
- }
- else
- {
- ddp->deh_dnet = rt->at.s_net; /* FIXME more hops?? */
- ddp->deh_snet = our_addr->s_net;
- }
- ddp->deh_dnode = rt->at.s_node;
- ddp->deh_snode = our_addr->s_node;
- ddp->deh_dport = 72;
- ddp->deh_sport = 72;
-
- *((__u8 *)(ddp+1)) = 22; /* ddp type = IP */
-
- skb->protocol = htons(ETH_P_ATALK); /* Protocol has changed */
-
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- aarp_send_ddp(rt->dev, skb, &rt->at, NULL);
-
- spin_unlock(&ipddp_route_lock);
-
- return NETDEV_TX_OK;
-}
-
-/*
- * Create a routing entry. We first verify that the
- * record does not already exist. If it does we return -EEXIST
- */
-static int ipddp_create(struct ipddp_route *new_rt)
-{
- struct ipddp_route *rt = kzalloc(sizeof(*rt), GFP_KERNEL);
-
- if (rt == NULL)
- return -ENOMEM;
-
- rt->ip = new_rt->ip;
- rt->at = new_rt->at;
- rt->next = NULL;
- if ((rt->dev = atrtr_get_dev(&rt->at)) == NULL) {
- kfree(rt);
- return -ENETUNREACH;
- }
-
- spin_lock_bh(&ipddp_route_lock);
- if (__ipddp_find_route(rt)) {
- spin_unlock_bh(&ipddp_route_lock);
- kfree(rt);
- return -EEXIST;
- }
-
- rt->next = ipddp_route_list;
- ipddp_route_list = rt;
-
- spin_unlock_bh(&ipddp_route_lock);
-
- return 0;
-}
-
-/*
- * Delete a route, we only delete a FULL match.
- * If route does not exist we return -ENOENT.
- */
-static int ipddp_delete(struct ipddp_route *rt)
-{
- struct ipddp_route **r = &ipddp_route_list;
- struct ipddp_route *tmp;
-
- spin_lock_bh(&ipddp_route_lock);
- while((tmp = *r) != NULL)
- {
- if(tmp->ip == rt->ip &&
- tmp->at.s_net == rt->at.s_net &&
- tmp->at.s_node == rt->at.s_node)
- {
- *r = tmp->next;
- spin_unlock_bh(&ipddp_route_lock);
- kfree(tmp);
- return 0;
- }
- r = &tmp->next;
- }
-
- spin_unlock_bh(&ipddp_route_lock);
- return -ENOENT;
-}
-
-/*
- * Find a routing entry, we only return a FULL match
- */
-static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt)
-{
- struct ipddp_route *f;
-
- for(f = ipddp_route_list; f != NULL; f = f->next)
- {
- if(f->ip == rt->ip &&
- f->at.s_net == rt->at.s_net &&
- f->at.s_node == rt->at.s_node)
- return f;
- }
-
- return NULL;
-}
-
-static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
- void __user *data, int cmd)
-{
- struct ipddp_route rcp, rcp2, *rp;
-
- if (in_compat_syscall())
- return -EOPNOTSUPP;
-
- if(!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&rcp, data, sizeof(rcp)))
- return -EFAULT;
-
- switch(cmd)
- {
- case SIOCADDIPDDPRT:
- return ipddp_create(&rcp);
-
- case SIOCFINDIPDDPRT:
- spin_lock_bh(&ipddp_route_lock);
- rp = __ipddp_find_route(&rcp);
- if (rp) {
- memset(&rcp2, 0, sizeof(rcp2));
- rcp2.ip = rp->ip;
- rcp2.at = rp->at;
- rcp2.flags = rp->flags;
- }
- spin_unlock_bh(&ipddp_route_lock);
-
- if (rp) {
- if (copy_to_user(data, &rcp2,
- sizeof(struct ipddp_route)))
- return -EFAULT;
- return 0;
- } else
- return -ENOENT;
-
- case SIOCDELIPDDPRT:
- return ipddp_delete(&rcp);
-
- default:
- return -EINVAL;
- }
-}
-
-static struct net_device *dev_ipddp;
-
-MODULE_LICENSE("GPL");
-module_param(ipddp_mode, int, 0);
-
-static int __init ipddp_init_module(void)
-{
- dev_ipddp = ipddp_init();
- return PTR_ERR_OR_ZERO(dev_ipddp);
-}
-
-static void __exit ipddp_cleanup_module(void)
-{
- struct ipddp_route *p;
-
- unregister_netdev(dev_ipddp);
- free_netdev(dev_ipddp);
-
- while (ipddp_route_list) {
- p = ipddp_route_list->next;
- kfree(ipddp_route_list);
- ipddp_route_list = p;
- }
-}
-
-module_init(ipddp_init_module);
-module_exit(ipddp_cleanup_module);
generated by cgit (git 2.34.1) at 2024-05-28 16:26:34 +0000