From: Arnd Bergmann <arnd@xxxxxxxx> After the cops driver is removed, ipddp is now the only CONFIG_DEV_APPLETALK but as far as I can tell, this also has no users and can be removed, making appletalk support purely based on ethertalk, using ethernet hardware. Link: https://lore.kernel.org/netdev/e490dd0c-a65d-4acf-89c6-c06cb48ec880@xxxxxxxxxxxxxxxx/ Link: https://lore.kernel.org/netdev/9cac4fbd-9557-b0b8-54fa-93f0290a6fb8@xxxxxxxxxxxxx/ Cc: Doug Brown <doug@xxxxxxxxxxxxx> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- Documentation/networking/ipddp.rst | 78 ------- MAINTAINERS | 1 - drivers/net/Makefile | 1 - drivers/net/appletalk/Kconfig | 72 ------ drivers/net/appletalk/Makefile | 6 - drivers/net/appletalk/ipddp.c | 345 ----------------------------- drivers/net/appletalk/ipddp.h | 28 --- net/Kconfig | 2 +- net/appletalk/Kconfig | 30 +++ 9 files changed, 31 insertions(+), 532 deletions(-) delete mode 100644 Documentation/networking/ipddp.rst delete mode 100644 drivers/net/appletalk/Kconfig delete mode 100644 drivers/net/appletalk/Makefile delete mode 100644 drivers/net/appletalk/ipddp.c delete mode 100644 drivers/net/appletalk/ipddp.h create mode 100644 net/appletalk/Kconfig diff --git a/Documentation/networking/ipddp.rst b/Documentation/networking/ipddp.rst deleted file mode 100644 index be7091b779274..0000000000000 --- a/Documentation/networking/ipddp.rst +++ /dev/null @@ -1,78 +0,0 @@ -.. SPDX-License-Identifier: GPL-2.0 - -========================================================= -AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation -========================================================= - -Documentation ipddp.c - -This file is written by Jay Schulist <jschlst@xxxxxxxxx> - -Introduction ------------- - -AppleTalk-IP (IPDDP) is the method computers connected to AppleTalk -networks can use to communicate via IP. AppleTalk-IP is simply IP datagrams -inside AppleTalk packets. - -Through this driver you can either allow your Linux box to communicate -IP over an AppleTalk network or you can provide IP gatewaying functions -for your AppleTalk users. - -You can currently encapsulate or decapsulate AppleTalk-IP on LocalTalk, -EtherTalk and PPPTalk. The only limit on the protocol is that of what -kernel AppleTalk layer and drivers are available. - -Each mode requires its own user space software. - -Compiling AppleTalk-IP Decapsulation/Encapsulation -================================================== - -AppleTalk-IP decapsulation needs to be compiled into your kernel. You -will need to turn on AppleTalk-IP driver support. Then you will need to -select ONE of the two options; IP to AppleTalk-IP encapsulation support or -AppleTalk-IP to IP decapsulation support. If you compile the driver -statically you will only be able to use the driver for the function you have -enabled in the kernel. If you compile the driver as a module you can -select what mode you want it to run in via a module loading param. -ipddp_mode=1 for AppleTalk-IP encapsulation and ipddp_mode=2 for -AppleTalk-IP to IP decapsulation. - -Basic instructions for user space tools -======================================= - -I will briefly describe the operation of the tools, but you will -need to consult the supporting documentation for each set of tools. - -Decapsulation - You will need to download a software package called -MacGate. In this distribution there will be a tool called MacRoute -which enables you to add routes to the kernel for your Macs by hand. -Also the tool MacRegGateWay is included to register the -proper IP Gateway and IP addresses for your machine. Included in this -distribution is a patch to netatalk-1.4b2+asun2.0a17.2 (available from -ftp.u.washington.edu/pub/user-supported/asun/) this patch is optional -but it allows automatic adding and deleting of routes for Macs. (Handy -for locations with large Mac installations) - -Encapsulation - You will need to download a software daemon called ipddpd. -This software expects there to be an AppleTalk-IP gateway on the network. -You will also need to add the proper routes to route your Linux box's IP -traffic out the ipddp interface. - -Common Uses of ipddp.c ----------------------- -Of course AppleTalk-IP decapsulation and encapsulation, but specifically -decapsulation is being used most for connecting LocalTalk networks to -IP networks. Although it has been used on EtherTalk networks to allow -Macs that are only able to tunnel IP over EtherTalk. - -Encapsulation has been used to allow a Linux box stuck on a LocalTalk -network to use IP. It should work equally well if you are stuck on an -EtherTalk only network. - -Further Assistance -------------------- -You can contact me (Jay Schulist <jschlst@xxxxxxxxx>) with any -questions regarding decapsulation or encapsulation. Bradford W. Johnson -<johns393@xxxxxxxxxxxxxxxxx> originally wrote the ipddp.c driver for IP -encapsulation in AppleTalk. diff --git a/MAINTAINERS b/MAINTAINERS index 92539465eef12..688183517f403 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1459,7 +1459,6 @@ F: drivers/hwmon/applesmc.c APPLETALK NETWORK LAYER L: netdev@xxxxxxxxxxxxxxx S: Odd fixes -F: drivers/net/appletalk/ F: include/linux/atalk.h F: include/uapi/linux/atalk.h F: net/appletalk/ diff --git a/drivers/net/Makefile b/drivers/net/Makefile index e26f98f897c55..8a83db32509dc 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -45,7 +45,6 @@ obj-$(CONFIG_MHI_NET) += mhi_net.o # Networking Drivers # obj-$(CONFIG_ARCNET) += arcnet/ -obj-$(CONFIG_DEV_APPLETALK) += appletalk/ obj-$(CONFIG_CAIF) += caif/ obj-$(CONFIG_CAN) += can/ obj-$(CONFIG_NET_DSA) += dsa/ diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig deleted file mode 100644 index b94f731e45767..0000000000000 --- a/drivers/net/appletalk/Kconfig +++ /dev/null @@ -1,72 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -# -# Appletalk driver configuration -# -config ATALK - tristate "Appletalk protocol support" - select LLC - help - AppleTalk is the protocol that Apple computers can use to communicate - on a network. If your Linux box is connected to such a network and you - wish to connect to it, say Y. You will need to use the netatalk package - so that your Linux box can act as a print and file server for Macs as - well as access AppleTalk printers. Check out - <http://www.zettabyte.net/netatalk/> on the WWW for details. - EtherTalk is the name used for AppleTalk over Ethernet and the - cheaper and slower LocalTalk is AppleTalk over a proprietary Apple - network using serial links. EtherTalk and LocalTalk are fully - supported by Linux. - - General information about how to connect Linux, Windows machines and - Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. The - NET3-4-HOWTO, available from - <http://www.tldp.org/docs.html#howto>, contains valuable - information as well. - - To compile this driver as a module, choose M here: the module will be - called appletalk. You almost certainly want to compile it as a - module so you can restart your AppleTalk stack without rebooting - your machine. I hear that the GNU boycott of Apple is over, so - even politically correct people are allowed to say Y here. - -config DEV_APPLETALK - tristate "Appletalk interfaces support" - depends on ATALK - help - AppleTalk is the protocol that Apple computers can use to communicate - on a network. If your Linux box is connected to such a network, and wish - to do IP over it, or you have a LocalTalk card and wish to use it to - connect to the AppleTalk network, say Y. - -config IPDDP - tristate "Appletalk-IP driver support" - depends on DEV_APPLETALK && ATALK - help - This allows IP networking for users who only have AppleTalk - networking available. This feature is experimental. With this - driver, you can encapsulate IP inside AppleTalk (e.g. if your Linux - box is stuck on an AppleTalk only network) or decapsulate (e.g. if - you want your Linux box to act as an Internet gateway for a zoo of - AppleTalk connected Macs). Please see the file - <file:Documentation/networking/ipddp.rst> for more information. - - If you say Y here, the AppleTalk-IP support will be compiled into - the kernel. In this case, you can either use encapsulation or - decapsulation, but not both. With the following two questions, you - decide which one you want. - - To compile the AppleTalk-IP support as a module, choose M here: the - module will be called ipddp. - In this case, you will be able to use both encapsulation and - decapsulation simultaneously, by loading two copies of the module - and specifying different values for the module option ipddp_mode. - -config IPDDP_ENCAP - bool "IP to Appletalk-IP Encapsulation support" - depends on IPDDP - help - If you say Y here, the AppleTalk-IP code will be able to encapsulate - IP packets inside AppleTalk frames; this is useful if your Linux box - is stuck on an AppleTalk network (which hopefully contains a - decapsulator somewhere). Please see - <file:Documentation/networking/ipddp.rst> for more information. diff --git a/drivers/net/appletalk/Makefile b/drivers/net/appletalk/Makefile deleted file mode 100644 index d8c7b23ec7ffc..0000000000000 --- a/drivers/net/appletalk/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -# -# Makefile for drivers/net/appletalk -# - -obj-$(CONFIG_IPDDP) += ipddp.o diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c deleted file mode 100644 index d558535390f98..0000000000000 --- 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@xxxxxxxxxxxxxxxxx> - * - DDP-IP Decap by: Jay Schulist <jschlst@xxxxxxxxx> - * - * 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@xxxxxxxxxxxxxxxxx> - * - 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@xxxxxxxxx> - * - * 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@xxxxxxxxxxxxxxxxx>\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@xxxxxxxxxxxxxxxxx>\n", - dev->name); - if(ipddp_mode == IPDDP_DECAP) - printk("%s: Appletalk-IP Decap. mode by Jay Schulist <jschlst@xxxxxxxxx>\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); diff --git a/drivers/net/appletalk/ipddp.h b/drivers/net/appletalk/ipddp.h deleted file mode 100644 index 9a8e45a469259..0000000000000 --- a/drivers/net/appletalk/ipddp.h +++ /dev/null @@ -1,28 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * ipddp.h: Header for IP-over-DDP driver for Linux. - */ - -#ifndef __LINUX_IPDDP_H -#define __LINUX_IPDDP_H - -#ifdef __KERNEL__ - -#define SIOCADDIPDDPRT (SIOCDEVPRIVATE) -#define SIOCDELIPDDPRT (SIOCDEVPRIVATE+1) -#define SIOCFINDIPDDPRT (SIOCDEVPRIVATE+2) - -struct ipddp_route -{ - struct net_device *dev; /* Carrier device */ - __be32 ip; /* IP address */ - struct atalk_addr at; /* Gateway appletalk address */ - int flags; - struct ipddp_route *next; -}; - -#define IPDDP_ENCAP 1 -#define IPDDP_DECAP 2 - -#endif /* __KERNEL__ */ -#endif /* __LINUX_IPDDP_H */ diff --git a/net/Kconfig b/net/Kconfig index d532ec33f1fed..e248236c29a73 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -246,7 +246,7 @@ source "net/bridge/Kconfig" source "net/dsa/Kconfig" source "net/8021q/Kconfig" source "net/llc/Kconfig" -source "drivers/net/appletalk/Kconfig" +source "net/appletalk/Kconfig" source "net/x25/Kconfig" source "net/lapb/Kconfig" source "net/phonet/Kconfig" diff --git a/net/appletalk/Kconfig b/net/appletalk/Kconfig new file mode 100644 index 0000000000000..041141abf925b --- /dev/null +++ b/net/appletalk/Kconfig @@ -0,0 +1,30 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Appletalk configuration +# +config ATALK + tristate "Appletalk protocol support" + select LLC + help + AppleTalk is the protocol that Apple computers can use to communicate + on a network. If your Linux box is connected to such a network and you + wish to connect to it, say Y. You will need to use the netatalk package + so that your Linux box can act as a print and file server for Macs as + well as access AppleTalk printers. Check out + <http://www.zettabyte.net/netatalk/> on the WWW for details. + EtherTalk is the name used for AppleTalk over Ethernet and the + cheaper and slower LocalTalk is AppleTalk over a proprietary Apple + network using serial links. EtherTalk and LocalTalk are fully + supported by Linux. + + General information about how to connect Linux, Windows machines and + Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. The + NET3-4-HOWTO, available from + <http://www.tldp.org/docs.html#howto>, contains valuable + information as well. + + To compile this driver as a module, choose M here: the module will be + called appletalk. You almost certainly want to compile it as a + module so you can restart your AppleTalk stack without rebooting + your machine. I hear that the GNU boycott of Apple is over, so + even politically correct people are allowed to say Y here. -- 2.39.2
