/*
|
/*
|
* Implements an IPX socket layer.
|
* Implements an IPX socket layer.
|
*
|
*
|
* This code is derived from work by
|
* This code is derived from work by
|
* Ross Biro : Writing the original IP stack
|
* Ross Biro : Writing the original IP stack
|
* Fred Van Kempen : Tidying up the TCP/IP
|
* Fred Van Kempen : Tidying up the TCP/IP
|
*
|
*
|
* Many thanks go to Keith Baker, Institute For Industrial Information
|
* Many thanks go to Keith Baker, Institute For Industrial Information
|
* Technology Ltd, Swansea University for allowing me to work on this
|
* Technology Ltd, Swansea University for allowing me to work on this
|
* in my own time even though it was in some ways related to commercial
|
* in my own time even though it was in some ways related to commercial
|
* work I am currently employed to do there.
|
* work I am currently employed to do there.
|
*
|
*
|
* All the material in this file is subject to the Gnu license version 2.
|
* All the material in this file is subject to the Gnu license version 2.
|
* Neither Alan Cox nor the Swansea University Computer Society admit
|
* Neither Alan Cox nor the Swansea University Computer Society admit
|
* liability nor provide warranty for any of this software. This material
|
* liability nor provide warranty for any of this software. This material
|
* is provided as is and at no charge.
|
* is provided as is and at no charge.
|
*
|
*
|
* Revision 0.21: Uses the new generic socket option code.
|
* Revision 0.21: Uses the new generic socket option code.
|
* Revision 0.22: Gcc clean ups and drop out device registration. Use the
|
* Revision 0.22: Gcc clean ups and drop out device registration. Use the
|
* new multi-protocol edition of hard_header
|
* new multi-protocol edition of hard_header
|
* Revision 0.23: IPX /proc by Mark Evans. Adding a route will
|
* Revision 0.23: IPX /proc by Mark Evans. Adding a route will
|
* will overwrite any existing route to the same network.
|
* will overwrite any existing route to the same network.
|
* Revision 0.24: Supports new /proc with no 4K limit
|
* Revision 0.24: Supports new /proc with no 4K limit
|
* Revision 0.25: Add ephemeral sockets, passive local network
|
* Revision 0.25: Add ephemeral sockets, passive local network
|
* identification, support for local net 0 and
|
* identification, support for local net 0 and
|
* multiple datalinks <Greg Page>
|
* multiple datalinks <Greg Page>
|
* Revision 0.26: Device drop kills IPX routes via it. (needed for module)
|
* Revision 0.26: Device drop kills IPX routes via it. (needed for module)
|
* Revision 0.27: Autobind <Mark Evans>
|
* Revision 0.27: Autobind <Mark Evans>
|
* Revision 0.28: Small fix for multiple local networks <Thomas Winder>
|
* Revision 0.28: Small fix for multiple local networks <Thomas Winder>
|
* Revision 0.29: Assorted major errors removed <Mark Evans>
|
* Revision 0.29: Assorted major errors removed <Mark Evans>
|
* Small correction to promisc mode error fix <Alan Cox>
|
* Small correction to promisc mode error fix <Alan Cox>
|
* Asynchronous I/O support. Changed to use notifiers
|
* Asynchronous I/O support. Changed to use notifiers
|
* and the newer packet_type stuff. Assorted major
|
* and the newer packet_type stuff. Assorted major
|
* fixes <Alejandro Liu>
|
* fixes <Alejandro Liu>
|
* Revision 0.30: Moved to net/ipx/... <Alan Cox>
|
* Revision 0.30: Moved to net/ipx/... <Alan Cox>
|
* Don't set address length on recvfrom that errors.
|
* Don't set address length on recvfrom that errors.
|
* Incorrect verify_area.
|
* Incorrect verify_area.
|
* Revision 0.31: New sk_buffs. This still needs a lot of
|
* Revision 0.31: New sk_buffs. This still needs a lot of
|
* testing. <Alan Cox>
|
* testing. <Alan Cox>
|
* Revision 0.32: Using sock_alloc_send_skb, firewall hooks. <Alan Cox>
|
* Revision 0.32: Using sock_alloc_send_skb, firewall hooks. <Alan Cox>
|
* Supports sendmsg/recvmsg
|
* Supports sendmsg/recvmsg
|
* Revision 0.33: Internal network support, routing changes, uses a
|
* Revision 0.33: Internal network support, routing changes, uses a
|
* protocol private area for ipx data.
|
* protocol private area for ipx data.
|
* Revision 0.34: Module support. <Jim Freeman>
|
* Revision 0.34: Module support. <Jim Freeman>
|
* Revision 0.35: Checksum support. <Neil Turton>, hooked in by <Alan Cox>
|
* Revision 0.35: Checksum support. <Neil Turton>, hooked in by <Alan Cox>
|
* Handles WIN95 discovery packets <Volker Lendecke>
|
* Handles WIN95 discovery packets <Volker Lendecke>
|
* Revision 0.36: Internal bump up for 2.1
|
* Revision 0.36: Internal bump up for 2.1
|
* Revision 0.37: Began adding POSIXisms.
|
* Revision 0.37: Began adding POSIXisms.
|
* Revision 0.38: Asynchronous socket stuff made current.
|
* Revision 0.38: Asynchronous socket stuff made current.
|
* Revision 0.39: SPX interfaces
|
* Revision 0.39: SPX interfaces
|
* Revision 0.40: Tiny SIOCGSTAMP fix (chris@cybernet.co.nz)
|
* Revision 0.40: Tiny SIOCGSTAMP fix (chris@cybernet.co.nz)
|
* Revision 0.41: 802.2TR removed (p.norton@computer.org)
|
* Revision 0.41: 802.2TR removed (p.norton@computer.org)
|
* Fixed connecting to primary net,
|
* Fixed connecting to primary net,
|
* Automatic binding on send & receive,
|
* Automatic binding on send & receive,
|
* Martijn van Oosterhout <kleptogimp@geocities.com>
|
* Martijn van Oosterhout <kleptogimp@geocities.com>
|
* Revision 042: Multithreading - use spinlocks and refcounting to
|
* Revision 042: Multithreading - use spinlocks and refcounting to
|
* protect some structures: ipx_interface sock list, list
|
* protect some structures: ipx_interface sock list, list
|
* of ipx interfaces, etc.
|
* of ipx interfaces, etc.
|
* Bugfixes - do refcounting on net_devices, check function
|
* Bugfixes - do refcounting on net_devices, check function
|
* results, etc. Thanks to davem and freitag for
|
* results, etc. Thanks to davem and freitag for
|
* suggestions and guidance.
|
* suggestions and guidance.
|
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
|
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
|
* November, 2000
|
* November, 2000
|
* Revision 043: Shared SKBs, don't mangle packets, some cleanups
|
* Revision 043: Shared SKBs, don't mangle packets, some cleanups
|
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
|
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
|
* December, 2000
|
* December, 2000
|
* Revision 044: Call ipxitf_hold on NETDEV_UP (acme)
|
* Revision 044: Call ipxitf_hold on NETDEV_UP (acme)
|
* Revision 045: fix PPROP routing bug (acme)
|
* Revision 045: fix PPROP routing bug (acme)
|
* Revision 046: Further fixes to PPROP, ipxitf_create_internal was
|
* Revision 046: Further fixes to PPROP, ipxitf_create_internal was
|
* doing an unneeded MOD_INC_USE_COUNT, implement
|
* doing an unneeded MOD_INC_USE_COUNT, implement
|
* sysctl for ipx_pprop_broacasting, fix the ipx sysctl
|
* sysctl for ipx_pprop_broacasting, fix the ipx sysctl
|
* handling, making it dynamic, some cleanups, thanks to
|
* handling, making it dynamic, some cleanups, thanks to
|
* Petr Vandrovec for review and good suggestions. (acme)
|
* Petr Vandrovec for review and good suggestions. (acme)
|
* Revision 047: Cleanups, CodingStyle changes, move the ncp connection
|
* Revision 047: Cleanups, CodingStyle changes, move the ncp connection
|
* hack out of line (acme)
|
* hack out of line (acme)
|
*
|
*
|
* Protect the module by a MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT
|
* Protect the module by a MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT
|
* pair. Also, now usage count is managed this way
|
* pair. Also, now usage count is managed this way
|
* -Count one if the auto_interface mode is on
|
* -Count one if the auto_interface mode is on
|
* -Count one per configured interface
|
* -Count one per configured interface
|
*
|
*
|
* Jacques Gelinas (jacques@solucorp.qc.ca)
|
* Jacques Gelinas (jacques@solucorp.qc.ca)
|
*
|
*
|
*
|
*
|
* Portions Copyright (c) 1995 Caldera, Inc. <greg@caldera.com>
|
* Portions Copyright (c) 1995 Caldera, Inc. <greg@caldera.com>
|
* Neither Greg Page nor Caldera, Inc. admit liability nor provide
|
* Neither Greg Page nor Caldera, Inc. admit liability nor provide
|
* warranty for any of this software. This material is provided
|
* warranty for any of this software. This material is provided
|
* "AS-IS" and at no charge.
|
* "AS-IS" and at no charge.
|
*/
|
*/
|
|
|
#include <linux/config.h>
|
#include <linux/config.h>
|
#include <linux/module.h>
|
#include <linux/module.h>
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/types.h>
|
#include <linux/types.h>
|
#include <linux/socket.h>
|
#include <linux/socket.h>
|
#include <linux/in.h>
|
#include <linux/in.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
#include <linux/sched.h>
|
#include <linux/sched.h>
|
#include <linux/timer.h>
|
#include <linux/timer.h>
|
#include <linux/string.h>
|
#include <linux/string.h>
|
#include <linux/sockios.h>
|
#include <linux/sockios.h>
|
#include <linux/net.h>
|
#include <linux/net.h>
|
#include <linux/netdevice.h>
|
#include <linux/netdevice.h>
|
#include <net/ipx.h>
|
#include <net/ipx.h>
|
#include <linux/inet.h>
|
#include <linux/inet.h>
|
#include <linux/route.h>
|
#include <linux/route.h>
|
#include <net/sock.h>
|
#include <net/sock.h>
|
#include <asm/uaccess.h>
|
#include <asm/uaccess.h>
|
#include <asm/system.h>
|
#include <asm/system.h>
|
#include <linux/fcntl.h>
|
#include <linux/fcntl.h>
|
#include <linux/mm.h>
|
#include <linux/mm.h>
|
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
|
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
|
#include <linux/interrupt.h>
|
#include <linux/interrupt.h>
|
#include <net/p8022.h>
|
#include <net/p8022.h>
|
#include <net/psnap.h>
|
#include <net/psnap.h>
|
#include <linux/proc_fs.h>
|
#include <linux/proc_fs.h>
|
#include <linux/stat.h>
|
#include <linux/stat.h>
|
#include <linux/init.h>
|
#include <linux/init.h>
|
#include <linux/if_arp.h>
|
#include <linux/if_arp.h>
|
|
|
#ifdef CONFIG_SYSCTL
|
#ifdef CONFIG_SYSCTL
|
extern void ipx_register_sysctl(void);
|
extern void ipx_register_sysctl(void);
|
extern void ipx_unregister_sysctl(void);
|
extern void ipx_unregister_sysctl(void);
|
#else
|
#else
|
#define ipx_register_sysctl()
|
#define ipx_register_sysctl()
|
#define ipx_unregister_sysctl()
|
#define ipx_unregister_sysctl()
|
#endif
|
#endif
|
|
|
/* Configuration Variables */
|
/* Configuration Variables */
|
static unsigned char ipxcfg_max_hops = 16;
|
static unsigned char ipxcfg_max_hops = 16;
|
static char ipxcfg_auto_select_primary;
|
static char ipxcfg_auto_select_primary;
|
static char ipxcfg_auto_create_interfaces;
|
static char ipxcfg_auto_create_interfaces;
|
int sysctl_ipx_pprop_broadcasting = 1;
|
int sysctl_ipx_pprop_broadcasting = 1;
|
|
|
/* Global Variables */
|
/* Global Variables */
|
static struct datalink_proto *p8022_datalink;
|
static struct datalink_proto *p8022_datalink;
|
static struct datalink_proto *pEII_datalink;
|
static struct datalink_proto *pEII_datalink;
|
static struct datalink_proto *p8023_datalink;
|
static struct datalink_proto *p8023_datalink;
|
static struct datalink_proto *pSNAP_datalink;
|
static struct datalink_proto *pSNAP_datalink;
|
|
|
static struct proto_ops ipx_dgram_ops;
|
static struct proto_ops ipx_dgram_ops;
|
|
|
static struct net_proto_family *spx_family_ops;
|
static struct net_proto_family *spx_family_ops;
|
|
|
static ipx_route *ipx_routes;
|
static ipx_route *ipx_routes;
|
static rwlock_t ipx_routes_lock = RW_LOCK_UNLOCKED;
|
static rwlock_t ipx_routes_lock = RW_LOCK_UNLOCKED;
|
|
|
static ipx_interface *ipx_interfaces;
|
static ipx_interface *ipx_interfaces;
|
static spinlock_t ipx_interfaces_lock = SPIN_LOCK_UNLOCKED;
|
static spinlock_t ipx_interfaces_lock = SPIN_LOCK_UNLOCKED;
|
|
|
static ipx_interface *ipx_primary_net;
|
static ipx_interface *ipx_primary_net;
|
static ipx_interface *ipx_internal_net;
|
static ipx_interface *ipx_internal_net;
|
|
|
#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
|
#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
|
|
|
#undef IPX_REFCNT_DEBUG
|
#undef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
atomic_t ipx_sock_nr;
|
atomic_t ipx_sock_nr;
|
#endif
|
#endif
|
|
|
static void ipxcfg_set_auto_create(char val)
|
static void ipxcfg_set_auto_create(char val)
|
{
|
{
|
if (ipxcfg_auto_create_interfaces != val) {
|
if (ipxcfg_auto_create_interfaces != val) {
|
if (val)
|
if (val)
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
else
|
else
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
|
|
ipxcfg_auto_create_interfaces = val;
|
ipxcfg_auto_create_interfaces = val;
|
}
|
}
|
}
|
}
|
|
|
static void ipxcfg_set_auto_select(char val)
|
static void ipxcfg_set_auto_select(char val)
|
{
|
{
|
ipxcfg_auto_select_primary = val;
|
ipxcfg_auto_select_primary = val;
|
if (val && !ipx_primary_net)
|
if (val && !ipx_primary_net)
|
ipx_primary_net = ipx_interfaces;
|
ipx_primary_net = ipx_interfaces;
|
}
|
}
|
|
|
static int ipxcfg_get_config_data(ipx_config_data *arg)
|
static int ipxcfg_get_config_data(ipx_config_data *arg)
|
{
|
{
|
ipx_config_data vals;
|
ipx_config_data vals;
|
|
|
vals.ipxcfg_auto_create_interfaces = ipxcfg_auto_create_interfaces;
|
vals.ipxcfg_auto_create_interfaces = ipxcfg_auto_create_interfaces;
|
vals.ipxcfg_auto_select_primary = ipxcfg_auto_select_primary;
|
vals.ipxcfg_auto_select_primary = ipxcfg_auto_select_primary;
|
|
|
return copy_to_user(arg, &vals, sizeof(vals)) ? -EFAULT : 0;
|
return copy_to_user(arg, &vals, sizeof(vals)) ? -EFAULT : 0;
|
}
|
}
|
|
|
/* Handlers for the socket list. */
|
/* Handlers for the socket list. */
|
|
|
static inline void ipxitf_hold(ipx_interface *intrfc)
|
static inline void ipxitf_hold(ipx_interface *intrfc)
|
{
|
{
|
atomic_inc(&intrfc->refcnt);
|
atomic_inc(&intrfc->refcnt);
|
}
|
}
|
|
|
static void ipxitf_down(ipx_interface *intrfc);
|
static void ipxitf_down(ipx_interface *intrfc);
|
|
|
static inline void ipxitf_put(ipx_interface *intrfc)
|
static inline void ipxitf_put(ipx_interface *intrfc)
|
{
|
{
|
if (atomic_dec_and_test(&intrfc->refcnt))
|
if (atomic_dec_and_test(&intrfc->refcnt))
|
ipxitf_down(intrfc);
|
ipxitf_down(intrfc);
|
}
|
}
|
|
|
static void __ipxitf_down(ipx_interface *intrfc);
|
static void __ipxitf_down(ipx_interface *intrfc);
|
|
|
static inline void __ipxitf_put(ipx_interface *intrfc)
|
static inline void __ipxitf_put(ipx_interface *intrfc)
|
{
|
{
|
if (atomic_dec_and_test(&intrfc->refcnt))
|
if (atomic_dec_and_test(&intrfc->refcnt))
|
__ipxitf_down(intrfc);
|
__ipxitf_down(intrfc);
|
}
|
}
|
/*
|
/*
|
* Note: Sockets may not be removed _during_ an interrupt or inet_bh
|
* Note: Sockets may not be removed _during_ an interrupt or inet_bh
|
* handler using this technique. They can be added although we do not
|
* handler using this technique. They can be added although we do not
|
* use this facility.
|
* use this facility.
|
*/
|
*/
|
|
|
void ipx_remove_socket(struct sock *sk)
|
void ipx_remove_socket(struct sock *sk)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
|
|
/* Determine interface with which socket is associated */
|
/* Determine interface with which socket is associated */
|
intrfc = sk->protinfo.af_ipx.intrfc;
|
intrfc = sk->protinfo.af_ipx.intrfc;
|
if (!intrfc)
|
if (!intrfc)
|
goto out;
|
goto out;
|
|
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
s = intrfc->if_sklist;
|
s = intrfc->if_sklist;
|
if (s == sk) {
|
if (s == sk) {
|
intrfc->if_sklist = s->next;
|
intrfc->if_sklist = s->next;
|
goto out_unlock;
|
goto out_unlock;
|
}
|
}
|
|
|
while (s && s->next) {
|
while (s && s->next) {
|
if (s->next == sk) {
|
if (s->next == sk) {
|
s->next = sk->next;
|
s->next = sk->next;
|
goto out_unlock;
|
goto out_unlock;
|
}
|
}
|
s = s->next;
|
s = s->next;
|
}
|
}
|
out_unlock:
|
out_unlock:
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
sock_put(sk);
|
sock_put(sk);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
out: return;
|
out: return;
|
}
|
}
|
|
|
static void ipx_destroy_socket(struct sock *sk)
|
static void ipx_destroy_socket(struct sock *sk)
|
{
|
{
|
ipx_remove_socket(sk);
|
ipx_remove_socket(sk);
|
skb_queue_purge(&sk->receive_queue);
|
skb_queue_purge(&sk->receive_queue);
|
#ifdef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
atomic_dec(&ipx_sock_nr);
|
atomic_dec(&ipx_sock_nr);
|
printk(KERN_DEBUG "IPX socket %p released, %d are still alive\n", sk,
|
printk(KERN_DEBUG "IPX socket %p released, %d are still alive\n", sk,
|
atomic_read(&ipx_sock_nr));
|
atomic_read(&ipx_sock_nr));
|
if (atomic_read(&sk->refcnt) != 1)
|
if (atomic_read(&sk->refcnt) != 1)
|
printk(KERN_DEBUG "Destruction sock ipx %p delayed, cnt=%d\n",
|
printk(KERN_DEBUG "Destruction sock ipx %p delayed, cnt=%d\n",
|
sk, atomic_read(&sk->refcnt));
|
sk, atomic_read(&sk->refcnt));
|
#endif
|
#endif
|
sock_put(sk);
|
sock_put(sk);
|
}
|
}
|
|
|
/*
|
/*
|
* The following code is used to support IPX Interfaces (IPXITF). An
|
* The following code is used to support IPX Interfaces (IPXITF). An
|
* IPX interface is defined by a physical device and a frame type.
|
* IPX interface is defined by a physical device and a frame type.
|
*/
|
*/
|
static ipx_route * ipxrtr_lookup(__u32);
|
static ipx_route * ipxrtr_lookup(__u32);
|
|
|
/* ipxitf_clear_primary_net has to be called with ipx_interfaces_lock held */
|
/* ipxitf_clear_primary_net has to be called with ipx_interfaces_lock held */
|
|
|
static void ipxitf_clear_primary_net(void)
|
static void ipxitf_clear_primary_net(void)
|
{
|
{
|
ipx_primary_net = ipxcfg_auto_select_primary ? ipx_interfaces : NULL;
|
ipx_primary_net = ipxcfg_auto_select_primary ? ipx_interfaces : NULL;
|
}
|
}
|
|
|
static ipx_interface *__ipxitf_find_using_phys(struct net_device *dev,
|
static ipx_interface *__ipxitf_find_using_phys(struct net_device *dev,
|
unsigned short datalink)
|
unsigned short datalink)
|
{
|
{
|
ipx_interface *i = ipx_interfaces;
|
ipx_interface *i = ipx_interfaces;
|
|
|
while (i && (i->if_dev != dev || i->if_dlink_type != datalink))
|
while (i && (i->if_dev != dev || i->if_dlink_type != datalink))
|
i = i->if_next;
|
i = i->if_next;
|
|
|
return i;
|
return i;
|
}
|
}
|
|
|
static ipx_interface *ipxitf_find_using_phys(struct net_device *dev,
|
static ipx_interface *ipxitf_find_using_phys(struct net_device *dev,
|
unsigned short datalink)
|
unsigned short datalink)
|
{
|
{
|
ipx_interface *i;
|
ipx_interface *i;
|
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
i = __ipxitf_find_using_phys(dev, datalink);
|
i = __ipxitf_find_using_phys(dev, datalink);
|
if (i)
|
if (i)
|
ipxitf_hold(i);
|
ipxitf_hold(i);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
return i;
|
return i;
|
}
|
}
|
|
|
static ipx_interface *ipxitf_find_using_net(__u32 net)
|
static ipx_interface *ipxitf_find_using_net(__u32 net)
|
{
|
{
|
ipx_interface *i;
|
ipx_interface *i;
|
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
if (net)
|
if (net)
|
for (i = ipx_interfaces; i && i->if_netnum != net;
|
for (i = ipx_interfaces; i && i->if_netnum != net;
|
i = i->if_next)
|
i = i->if_next)
|
;
|
;
|
else
|
else
|
i = ipx_primary_net;
|
i = ipx_primary_net;
|
if (i)
|
if (i)
|
ipxitf_hold(i);
|
ipxitf_hold(i);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
|
|
return i;
|
return i;
|
}
|
}
|
|
|
/* Sockets are bound to a particular IPX interface. */
|
/* Sockets are bound to a particular IPX interface. */
|
static void ipxitf_insert_socket(ipx_interface *intrfc, struct sock *sk)
|
static void ipxitf_insert_socket(ipx_interface *intrfc, struct sock *sk)
|
{
|
{
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
sock_hold(sk);
|
sock_hold(sk);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
sk->protinfo.af_ipx.intrfc = intrfc;
|
sk->protinfo.af_ipx.intrfc = intrfc;
|
sk->next = NULL;
|
sk->next = NULL;
|
if (!intrfc->if_sklist)
|
if (!intrfc->if_sklist)
|
intrfc->if_sklist = sk;
|
intrfc->if_sklist = sk;
|
else {
|
else {
|
struct sock *s = intrfc->if_sklist;
|
struct sock *s = intrfc->if_sklist;
|
while (s->next)
|
while (s->next)
|
s = s->next;
|
s = s->next;
|
s->next = sk;
|
s->next = sk;
|
}
|
}
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
}
|
}
|
|
|
/* caller must hold intrfc->if_sklist_lock */
|
/* caller must hold intrfc->if_sklist_lock */
|
static struct sock *__ipxitf_find_socket(ipx_interface *intrfc,
|
static struct sock *__ipxitf_find_socket(ipx_interface *intrfc,
|
unsigned short port)
|
unsigned short port)
|
{
|
{
|
struct sock *s = intrfc->if_sklist;
|
struct sock *s = intrfc->if_sklist;
|
|
|
while (s && s->protinfo.af_ipx.port != port)
|
while (s && s->protinfo.af_ipx.port != port)
|
s = s->next;
|
s = s->next;
|
|
|
return s;
|
return s;
|
}
|
}
|
|
|
/* caller must hold a reference to intrfc */
|
/* caller must hold a reference to intrfc */
|
static struct sock *ipxitf_find_socket(ipx_interface *intrfc,
|
static struct sock *ipxitf_find_socket(ipx_interface *intrfc,
|
unsigned short port)
|
unsigned short port)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
s = __ipxitf_find_socket(intrfc, port);
|
s = __ipxitf_find_socket(intrfc, port);
|
if (s)
|
if (s)
|
sock_hold(s);
|
sock_hold(s);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
|
|
return s;
|
return s;
|
}
|
}
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
static struct sock *ipxitf_find_internal_socket(ipx_interface *intrfc,
|
static struct sock *ipxitf_find_internal_socket(ipx_interface *intrfc,
|
unsigned char *node, unsigned short port)
|
unsigned char *node, unsigned short port)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
|
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
s = intrfc->if_sklist;
|
s = intrfc->if_sklist;
|
|
|
while (s) {
|
while (s) {
|
if (s->protinfo.af_ipx.port == port &&
|
if (s->protinfo.af_ipx.port == port &&
|
!memcmp(node, s->protinfo.af_ipx.node, IPX_NODE_LEN))
|
!memcmp(node, s->protinfo.af_ipx.node, IPX_NODE_LEN))
|
break;
|
break;
|
s = s->next;
|
s = s->next;
|
}
|
}
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
|
|
return s;
|
return s;
|
}
|
}
|
#endif
|
#endif
|
|
|
static void ipxrtr_del_routes(ipx_interface *);
|
static void ipxrtr_del_routes(ipx_interface *);
|
|
|
static void __ipxitf_down(ipx_interface *intrfc)
|
static void __ipxitf_down(ipx_interface *intrfc)
|
{
|
{
|
struct sock *s, *t;
|
struct sock *s, *t;
|
|
|
/* Delete all routes associated with this interface */
|
/* Delete all routes associated with this interface */
|
ipxrtr_del_routes(intrfc);
|
ipxrtr_del_routes(intrfc);
|
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
/* error sockets */
|
/* error sockets */
|
for (s = intrfc->if_sklist; s;) {
|
for (s = intrfc->if_sklist; s;) {
|
s->err = ENOLINK;
|
s->err = ENOLINK;
|
s->error_report(s);
|
s->error_report(s);
|
s->protinfo.af_ipx.intrfc = NULL;
|
s->protinfo.af_ipx.intrfc = NULL;
|
s->protinfo.af_ipx.port = 0;
|
s->protinfo.af_ipx.port = 0;
|
s->zapped = 1; /* Indicates it is no longer bound */
|
s->zapped = 1; /* Indicates it is no longer bound */
|
t = s;
|
t = s;
|
s = s->next;
|
s = s->next;
|
t->next = NULL;
|
t->next = NULL;
|
}
|
}
|
intrfc->if_sklist = NULL;
|
intrfc->if_sklist = NULL;
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
|
|
/* remove this interface from list */
|
/* remove this interface from list */
|
if (intrfc == ipx_interfaces)
|
if (intrfc == ipx_interfaces)
|
ipx_interfaces = intrfc->if_next;
|
ipx_interfaces = intrfc->if_next;
|
else {
|
else {
|
ipx_interface *i = ipx_interfaces;
|
ipx_interface *i = ipx_interfaces;
|
while (i && i->if_next != intrfc)
|
while (i && i->if_next != intrfc)
|
i = i->if_next;
|
i = i->if_next;
|
if (i && i->if_next == intrfc)
|
if (i && i->if_next == intrfc)
|
i->if_next = intrfc->if_next;
|
i->if_next = intrfc->if_next;
|
}
|
}
|
|
|
/* remove this interface from *special* networks */
|
/* remove this interface from *special* networks */
|
if (intrfc == ipx_primary_net)
|
if (intrfc == ipx_primary_net)
|
ipxitf_clear_primary_net();
|
ipxitf_clear_primary_net();
|
if (intrfc == ipx_internal_net)
|
if (intrfc == ipx_internal_net)
|
ipx_internal_net = NULL;
|
ipx_internal_net = NULL;
|
|
|
if (intrfc->if_dev)
|
if (intrfc->if_dev)
|
dev_put(intrfc->if_dev);
|
dev_put(intrfc->if_dev);
|
kfree(intrfc);
|
kfree(intrfc);
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
}
|
}
|
|
|
static void ipxitf_down(ipx_interface *intrfc)
|
static void ipxitf_down(ipx_interface *intrfc)
|
{
|
{
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
__ipxitf_down(intrfc);
|
__ipxitf_down(intrfc);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
}
|
}
|
|
|
static int ipxitf_device_event(struct notifier_block *notifier,
|
static int ipxitf_device_event(struct notifier_block *notifier,
|
unsigned long event, void *ptr)
|
unsigned long event, void *ptr)
|
{
|
{
|
struct net_device *dev = ptr;
|
struct net_device *dev = ptr;
|
ipx_interface *i, *tmp;
|
ipx_interface *i, *tmp;
|
|
|
if (event != NETDEV_DOWN && event != NETDEV_UP)
|
if (event != NETDEV_DOWN && event != NETDEV_UP)
|
goto out;
|
goto out;
|
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
for (i = ipx_interfaces; i;) {
|
for (i = ipx_interfaces; i;) {
|
tmp = i->if_next;
|
tmp = i->if_next;
|
if (i->if_dev == dev) {
|
if (i->if_dev == dev) {
|
if (event == NETDEV_UP)
|
if (event == NETDEV_UP)
|
ipxitf_hold(i);
|
ipxitf_hold(i);
|
else
|
else
|
__ipxitf_put(i);
|
__ipxitf_put(i);
|
}
|
}
|
i = tmp;
|
i = tmp;
|
}
|
}
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
out: return NOTIFY_DONE;
|
out: return NOTIFY_DONE;
|
}
|
}
|
|
|
static void ipxitf_def_skb_handler(struct sock *sock, struct sk_buff *skb)
|
static void ipxitf_def_skb_handler(struct sock *sock, struct sk_buff *skb)
|
{
|
{
|
if (sock_queue_rcv_skb(sock, skb) < 0)
|
if (sock_queue_rcv_skb(sock, skb) < 0)
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
/*
|
/*
|
* On input skb->sk is NULL. Nobody is charged for the memory.
|
* On input skb->sk is NULL. Nobody is charged for the memory.
|
*/
|
*/
|
|
|
/* caller must hold a reference to intrfc */
|
/* caller must hold a reference to intrfc */
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
int copy)
|
int copy)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
int is_broadcast = !memcmp(ipx->ipx_dest.node, ipx_broadcast_node,
|
int is_broadcast = !memcmp(ipx->ipx_dest.node, ipx_broadcast_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
struct sock *s;
|
struct sock *s;
|
int ret;
|
int ret;
|
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
s = intrfc->if_sklist;
|
s = intrfc->if_sklist;
|
|
|
while (s) {
|
while (s) {
|
if (s->protinfo.af_ipx.port == ipx->ipx_dest.sock &&
|
if (s->protinfo.af_ipx.port == ipx->ipx_dest.sock &&
|
(is_broadcast || !memcmp(ipx->ipx_dest.node,
|
(is_broadcast || !memcmp(ipx->ipx_dest.node,
|
s->protinfo.af_ipx.node,
|
s->protinfo.af_ipx.node,
|
IPX_NODE_LEN))) {
|
IPX_NODE_LEN))) {
|
/* We found a socket to which to send */
|
/* We found a socket to which to send */
|
struct sk_buff *skb1;
|
struct sk_buff *skb1;
|
|
|
if (copy) {
|
if (copy) {
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
ret = -ENOMEM;
|
ret = -ENOMEM;
|
if (!skb1)
|
if (!skb1)
|
goto out;
|
goto out;
|
} else {
|
} else {
|
skb1 = skb;
|
skb1 = skb;
|
copy = 1; /* skb may only be used once */
|
copy = 1; /* skb may only be used once */
|
}
|
}
|
ipxitf_def_skb_handler(s, skb1);
|
ipxitf_def_skb_handler(s, skb1);
|
|
|
/* On an external interface, one socket can listen */
|
/* On an external interface, one socket can listen */
|
if (intrfc != ipx_internal_net)
|
if (intrfc != ipx_internal_net)
|
break;
|
break;
|
}
|
}
|
s = s->next;
|
s = s->next;
|
}
|
}
|
|
|
/* skb was solely for us, and we did not make a copy, so free it. */
|
/* skb was solely for us, and we did not make a copy, so free it. */
|
if (!copy)
|
if (!copy)
|
kfree_skb(skb);
|
kfree_skb(skb);
|
|
|
ret = 0;
|
ret = 0;
|
out: spin_unlock_bh(&intrfc->if_sklist_lock);
|
out: spin_unlock_bh(&intrfc->if_sklist_lock);
|
return ret;
|
return ret;
|
}
|
}
|
#else
|
#else
|
static struct sock *ncp_connection_hack(ipx_interface *intrfc,
|
static struct sock *ncp_connection_hack(ipx_interface *intrfc,
|
struct ipxhdr *ipx)
|
struct ipxhdr *ipx)
|
{
|
{
|
/* The packet's target is a NCP connection handler. We want to hand it
|
/* The packet's target is a NCP connection handler. We want to hand it
|
* to the correct socket directly within the kernel, so that the
|
* to the correct socket directly within the kernel, so that the
|
* mars_nwe packet distribution process does not have to do it. Here we
|
* mars_nwe packet distribution process does not have to do it. Here we
|
* only care about NCP and BURST packets.
|
* only care about NCP and BURST packets.
|
*
|
*
|
* You might call this a hack, but believe me, you do not want a
|
* You might call this a hack, but believe me, you do not want a
|
* complete NCP layer in the kernel, and this is VERY fast as well. */
|
* complete NCP layer in the kernel, and this is VERY fast as well. */
|
struct sock *sk = NULL;
|
struct sock *sk = NULL;
|
int connection = 0;
|
int connection = 0;
|
u8 *ncphdr = (u8 *)(ipx + 1);
|
u8 *ncphdr = (u8 *)(ipx + 1);
|
|
|
if (*ncphdr == 0x22 && *(ncphdr + 1) == 0x22) /* NCP request */
|
if (*ncphdr == 0x22 && *(ncphdr + 1) == 0x22) /* NCP request */
|
connection = (((int) *(ncphdr + 5)) << 8) | (int) *(ncphdr + 3);
|
connection = (((int) *(ncphdr + 5)) << 8) | (int) *(ncphdr + 3);
|
else if (*ncphdr == 0x77 && *(ncphdr + 1) == 0x77) /* BURST packet */
|
else if (*ncphdr == 0x77 && *(ncphdr + 1) == 0x77) /* BURST packet */
|
connection = (((int) *(ncphdr + 9)) << 8) | (int) *(ncphdr + 8);
|
connection = (((int) *(ncphdr + 9)) << 8) | (int) *(ncphdr + 8);
|
|
|
if (connection) {
|
if (connection) {
|
/* Now we have to look for a special NCP connection handling
|
/* Now we have to look for a special NCP connection handling
|
* socket. Only these sockets have ipx_ncp_conn != 0, set by
|
* socket. Only these sockets have ipx_ncp_conn != 0, set by
|
* SIOCIPXNCPCONN. */
|
* SIOCIPXNCPCONN. */
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
for (sk = intrfc->if_sklist;
|
for (sk = intrfc->if_sklist;
|
sk && sk->protinfo.af_ipx.ipx_ncp_conn != connection;
|
sk && sk->protinfo.af_ipx.ipx_ncp_conn != connection;
|
sk = sk->next);
|
sk = sk->next);
|
if (sk)
|
if (sk)
|
sock_hold(sk);
|
sock_hold(sk);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
}
|
}
|
return sk;
|
return sk;
|
}
|
}
|
|
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
int copy)
|
int copy)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct sock *sock1 = NULL, *sock2 = NULL;
|
struct sock *sock1 = NULL, *sock2 = NULL;
|
struct sk_buff *skb1 = NULL, *skb2 = NULL;
|
struct sk_buff *skb1 = NULL, *skb2 = NULL;
|
int ret;
|
int ret;
|
|
|
if (intrfc == ipx_primary_net && ntohs(ipx->ipx_dest.sock) == 0x451)
|
if (intrfc == ipx_primary_net && ntohs(ipx->ipx_dest.sock) == 0x451)
|
sock1 = ncp_connection_hack(intrfc, ipx);
|
sock1 = ncp_connection_hack(intrfc, ipx);
|
if (!sock1)
|
if (!sock1)
|
/* No special socket found, forward the packet the normal way */
|
/* No special socket found, forward the packet the normal way */
|
sock1 = ipxitf_find_socket(intrfc, ipx->ipx_dest.sock);
|
sock1 = ipxitf_find_socket(intrfc, ipx->ipx_dest.sock);
|
|
|
/*
|
/*
|
* We need to check if there is a primary net and if
|
* We need to check if there is a primary net and if
|
* this is addressed to one of the *SPECIAL* sockets because
|
* this is addressed to one of the *SPECIAL* sockets because
|
* these need to be propagated to the primary net.
|
* these need to be propagated to the primary net.
|
* The *SPECIAL* socket list contains: 0x452(SAP), 0x453(RIP) and
|
* The *SPECIAL* socket list contains: 0x452(SAP), 0x453(RIP) and
|
* 0x456(Diagnostic).
|
* 0x456(Diagnostic).
|
*/
|
*/
|
|
|
if (ipx_primary_net && intrfc != ipx_primary_net) {
|
if (ipx_primary_net && intrfc != ipx_primary_net) {
|
const int dsock = ntohs(ipx->ipx_dest.sock);
|
const int dsock = ntohs(ipx->ipx_dest.sock);
|
|
|
if (dsock == 0x452 || dsock == 0x453 || dsock == 0x456)
|
if (dsock == 0x452 || dsock == 0x453 || dsock == 0x456)
|
/* The appropriate thing to do here is to dup the
|
/* The appropriate thing to do here is to dup the
|
* packet and route to the primary net interface via
|
* packet and route to the primary net interface via
|
* ipxitf_send; however, we'll cheat and just demux it
|
* ipxitf_send; however, we'll cheat and just demux it
|
* here. */
|
* here. */
|
sock2 = ipxitf_find_socket(ipx_primary_net,
|
sock2 = ipxitf_find_socket(ipx_primary_net,
|
ipx->ipx_dest.sock);
|
ipx->ipx_dest.sock);
|
}
|
}
|
|
|
/*
|
/*
|
* If there is nothing to do return. The kfree will cancel any charging.
|
* If there is nothing to do return. The kfree will cancel any charging.
|
*/
|
*/
|
if (!sock1 && !sock2) {
|
if (!sock1 && !sock2) {
|
if (!copy)
|
if (!copy)
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* This next segment of code is a little awkward, but it sets it up
|
* This next segment of code is a little awkward, but it sets it up
|
* so that the appropriate number of copies of the SKB are made and
|
* so that the appropriate number of copies of the SKB are made and
|
* that skb1 and skb2 point to it (them) so that it (they) can be
|
* that skb1 and skb2 point to it (them) so that it (they) can be
|
* demuxed to sock1 and/or sock2. If we are unable to make enough
|
* demuxed to sock1 and/or sock2. If we are unable to make enough
|
* copies, we do as much as is possible.
|
* copies, we do as much as is possible.
|
*/
|
*/
|
|
|
if (copy)
|
if (copy)
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
else
|
else
|
skb1 = skb;
|
skb1 = skb;
|
|
|
ret = -ENOMEM;
|
ret = -ENOMEM;
|
if (!skb1)
|
if (!skb1)
|
goto out;
|
goto out;
|
|
|
/* Do we need 2 SKBs? */
|
/* Do we need 2 SKBs? */
|
if (sock1 && sock2)
|
if (sock1 && sock2)
|
skb2 = skb_clone(skb1, GFP_ATOMIC);
|
skb2 = skb_clone(skb1, GFP_ATOMIC);
|
else
|
else
|
skb2 = skb1;
|
skb2 = skb1;
|
|
|
if (sock1)
|
if (sock1)
|
ipxitf_def_skb_handler(sock1, skb1);
|
ipxitf_def_skb_handler(sock1, skb1);
|
|
|
ret = -ENOMEM;
|
ret = -ENOMEM;
|
if (!skb2)
|
if (!skb2)
|
goto out;
|
goto out;
|
|
|
if (sock2)
|
if (sock2)
|
ipxitf_def_skb_handler(sock2, skb2);
|
ipxitf_def_skb_handler(sock2, skb2);
|
|
|
ret = 0;
|
ret = 0;
|
out: if (sock1)
|
out: if (sock1)
|
sock_put(sock1);
|
sock_put(sock1);
|
if (sock2)
|
if (sock2)
|
sock_put(sock2);
|
sock_put(sock2);
|
return ret;
|
return ret;
|
}
|
}
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
|
|
static struct sk_buff *ipxitf_adjust_skbuff(ipx_interface *intrfc,
|
static struct sk_buff *ipxitf_adjust_skbuff(ipx_interface *intrfc,
|
struct sk_buff *skb)
|
struct sk_buff *skb)
|
{
|
{
|
struct sk_buff *skb2;
|
struct sk_buff *skb2;
|
int in_offset = skb->h.raw - skb->head;
|
int in_offset = skb->h.raw - skb->head;
|
int out_offset = intrfc->if_ipx_offset;
|
int out_offset = intrfc->if_ipx_offset;
|
int len;
|
int len;
|
|
|
/* Hopefully, most cases */
|
/* Hopefully, most cases */
|
if (in_offset >= out_offset)
|
if (in_offset >= out_offset)
|
return skb;
|
return skb;
|
|
|
/* Need new SKB */
|
/* Need new SKB */
|
len = skb->len + out_offset;
|
len = skb->len + out_offset;
|
skb2 = alloc_skb(len, GFP_ATOMIC);
|
skb2 = alloc_skb(len, GFP_ATOMIC);
|
if (skb2) {
|
if (skb2) {
|
skb_reserve(skb2, out_offset);
|
skb_reserve(skb2, out_offset);
|
skb2->nh.raw = skb2->h.raw = skb_put(skb2, skb->len);
|
skb2->nh.raw = skb2->h.raw = skb_put(skb2, skb->len);
|
memcpy(skb2->h.raw, skb->h.raw, skb->len);
|
memcpy(skb2->h.raw, skb->h.raw, skb->len);
|
memcpy(skb2->cb, skb->cb, sizeof(skb->cb));
|
memcpy(skb2->cb, skb->cb, sizeof(skb->cb));
|
}
|
}
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return skb2;
|
return skb2;
|
}
|
}
|
|
|
/* caller must hold a reference to intrfc and the skb has to be unshared */
|
/* caller must hold a reference to intrfc and the skb has to be unshared */
|
|
|
static int ipxitf_send(ipx_interface *intrfc, struct sk_buff *skb, char *node)
|
static int ipxitf_send(ipx_interface *intrfc, struct sk_buff *skb, char *node)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct net_device *dev = intrfc->if_dev;
|
struct net_device *dev = intrfc->if_dev;
|
struct datalink_proto *dl = intrfc->if_dlink;
|
struct datalink_proto *dl = intrfc->if_dlink;
|
char dest_node[IPX_NODE_LEN];
|
char dest_node[IPX_NODE_LEN];
|
int send_to_wire = 1;
|
int send_to_wire = 1;
|
int addr_len;
|
int addr_len;
|
|
|
ipx->ipx_tctrl = IPX_SKB_CB(skb)->ipx_tctrl;
|
ipx->ipx_tctrl = IPX_SKB_CB(skb)->ipx_tctrl;
|
ipx->ipx_dest.net = IPX_SKB_CB(skb)->ipx_dest_net;
|
ipx->ipx_dest.net = IPX_SKB_CB(skb)->ipx_dest_net;
|
ipx->ipx_source.net = IPX_SKB_CB(skb)->ipx_source_net;
|
ipx->ipx_source.net = IPX_SKB_CB(skb)->ipx_source_net;
|
|
|
/* see if we need to include the netnum in the route list */
|
/* see if we need to include the netnum in the route list */
|
if (IPX_SKB_CB(skb)->last_hop.index >= 0) {
|
if (IPX_SKB_CB(skb)->last_hop.index >= 0) {
|
u32 *last_hop = (u32 *)(((u8 *) skb->data) +
|
u32 *last_hop = (u32 *)(((u8 *) skb->data) +
|
sizeof(struct ipxhdr) +
|
sizeof(struct ipxhdr) +
|
IPX_SKB_CB(skb)->last_hop.index *
|
IPX_SKB_CB(skb)->last_hop.index *
|
sizeof(u32));
|
sizeof(u32));
|
*last_hop = IPX_SKB_CB(skb)->last_hop.netnum;
|
*last_hop = IPX_SKB_CB(skb)->last_hop.netnum;
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
}
|
}
|
|
|
/*
|
/*
|
* We need to know how many skbuffs it will take to send out this
|
* We need to know how many skbuffs it will take to send out this
|
* packet to avoid unnecessary copies.
|
* packet to avoid unnecessary copies.
|
*/
|
*/
|
|
|
if (!dl || !dev || dev->flags & IFF_LOOPBACK)
|
if (!dl || !dev || dev->flags & IFF_LOOPBACK)
|
send_to_wire = 0; /* No non looped */
|
send_to_wire = 0; /* No non looped */
|
|
|
/*
|
/*
|
* See if this should be demuxed to sockets on this interface
|
* See if this should be demuxed to sockets on this interface
|
*
|
*
|
* We want to ensure the original was eaten or that we only use
|
* We want to ensure the original was eaten or that we only use
|
* up clones.
|
* up clones.
|
*/
|
*/
|
|
|
if (ipx->ipx_dest.net == intrfc->if_netnum) {
|
if (ipx->ipx_dest.net == intrfc->if_netnum) {
|
/*
|
/*
|
* To our own node, loop and free the original.
|
* To our own node, loop and free the original.
|
* The internal net will receive on all node address.
|
* The internal net will receive on all node address.
|
*/
|
*/
|
if (intrfc == ipx_internal_net ||
|
if (intrfc == ipx_internal_net ||
|
!memcmp(intrfc->if_node, node, IPX_NODE_LEN)) {
|
!memcmp(intrfc->if_node, node, IPX_NODE_LEN)) {
|
/* Don't charge sender */
|
/* Don't charge sender */
|
skb_orphan(skb);
|
skb_orphan(skb);
|
|
|
/* Will charge receiver */
|
/* Will charge receiver */
|
return ipxitf_demux_socket(intrfc, skb, 0);
|
return ipxitf_demux_socket(intrfc, skb, 0);
|
}
|
}
|
|
|
/* Broadcast, loop and possibly keep to send on. */
|
/* Broadcast, loop and possibly keep to send on. */
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN)) {
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN)) {
|
if (!send_to_wire)
|
if (!send_to_wire)
|
skb_orphan(skb);
|
skb_orphan(skb);
|
ipxitf_demux_socket(intrfc, skb, send_to_wire);
|
ipxitf_demux_socket(intrfc, skb, send_to_wire);
|
if (!send_to_wire)
|
if (!send_to_wire)
|
goto out;
|
goto out;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* If the originating net is not equal to our net; this is routed
|
* If the originating net is not equal to our net; this is routed
|
* We are still charging the sender. Which is right - the driver
|
* We are still charging the sender. Which is right - the driver
|
* free will handle this fairly.
|
* free will handle this fairly.
|
*/
|
*/
|
if (ipx->ipx_source.net != intrfc->if_netnum) {
|
if (ipx->ipx_source.net != intrfc->if_netnum) {
|
/*
|
/*
|
* Unshare the buffer before modifying the count in
|
* Unshare the buffer before modifying the count in
|
* case its a flood or tcpdump
|
* case its a flood or tcpdump
|
*/
|
*/
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
if (!skb)
|
if (!skb)
|
goto out;
|
goto out;
|
if (++ipx->ipx_tctrl > ipxcfg_max_hops)
|
if (++ipx->ipx_tctrl > ipxcfg_max_hops)
|
send_to_wire = 0;
|
send_to_wire = 0;
|
}
|
}
|
|
|
if (!send_to_wire) {
|
if (!send_to_wire) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
goto out;
|
goto out;
|
}
|
}
|
|
|
/* Determine the appropriate hardware address */
|
/* Determine the appropriate hardware address */
|
addr_len = dev->addr_len;
|
addr_len = dev->addr_len;
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN))
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN))
|
memcpy(dest_node, dev->broadcast, addr_len);
|
memcpy(dest_node, dev->broadcast, addr_len);
|
else
|
else
|
memcpy(dest_node, &(node[IPX_NODE_LEN-addr_len]), addr_len);
|
memcpy(dest_node, &(node[IPX_NODE_LEN-addr_len]), addr_len);
|
|
|
/* Make any compensation for differing physical/data link size */
|
/* Make any compensation for differing physical/data link size */
|
skb = ipxitf_adjust_skbuff(intrfc, skb);
|
skb = ipxitf_adjust_skbuff(intrfc, skb);
|
if (!skb)
|
if (!skb)
|
goto out;
|
goto out;
|
|
|
/* set up data link and physical headers */
|
/* set up data link and physical headers */
|
skb->dev = dev;
|
skb->dev = dev;
|
skb->protocol = __constant_htons(ETH_P_IPX);
|
skb->protocol = __constant_htons(ETH_P_IPX);
|
dl->datalink_header(dl, skb, dest_node);
|
dl->datalink_header(dl, skb, dest_node);
|
|
|
/* Send it out */
|
/* Send it out */
|
dev_queue_xmit(skb);
|
dev_queue_xmit(skb);
|
out: return 0;
|
out: return 0;
|
}
|
}
|
|
|
static int ipxrtr_add_route(__u32, ipx_interface *, unsigned char *);
|
static int ipxrtr_add_route(__u32, ipx_interface *, unsigned char *);
|
|
|
static int ipxitf_add_local_route(ipx_interface *intrfc)
|
static int ipxitf_add_local_route(ipx_interface *intrfc)
|
{
|
{
|
return ipxrtr_add_route(intrfc->if_netnum, intrfc, NULL);
|
return ipxrtr_add_route(intrfc->if_netnum, intrfc, NULL);
|
}
|
}
|
|
|
static const char * ipx_frame_name(unsigned short);
|
static const char * ipx_frame_name(unsigned short);
|
static const char * ipx_device_name(ipx_interface *);
|
static const char * ipx_device_name(ipx_interface *);
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb);
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb);
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb);
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb);
|
|
|
static int ipxitf_rcv(ipx_interface *intrfc, struct sk_buff *skb)
|
static int ipxitf_rcv(ipx_interface *intrfc, struct sk_buff *skb)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
int ret = 0;
|
int ret = 0;
|
|
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
|
|
/* See if we should update our network number */
|
/* See if we should update our network number */
|
if (!intrfc->if_netnum) /* net number of intrfc not known yet */
|
if (!intrfc->if_netnum) /* net number of intrfc not known yet */
|
ipxitf_discover_netnum(intrfc, skb);
|
ipxitf_discover_netnum(intrfc, skb);
|
|
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
if (ipx->ipx_type == IPX_TYPE_PPROP) {
|
if (ipx->ipx_type == IPX_TYPE_PPROP) {
|
ret = ipxitf_pprop(intrfc, skb);
|
ret = ipxitf_pprop(intrfc, skb);
|
if (ret)
|
if (ret)
|
goto out_free_skb;
|
goto out_free_skb;
|
}
|
}
|
|
|
/* local processing follows */
|
/* local processing follows */
|
if (!IPX_SKB_CB(skb)->ipx_dest_net)
|
if (!IPX_SKB_CB(skb)->ipx_dest_net)
|
IPX_SKB_CB(skb)->ipx_dest_net = intrfc->if_netnum;
|
IPX_SKB_CB(skb)->ipx_dest_net = intrfc->if_netnum;
|
if (!IPX_SKB_CB(skb)->ipx_source_net)
|
if (!IPX_SKB_CB(skb)->ipx_source_net)
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
|
|
/* it doesn't make sense to route a pprop packet, there's no meaning
|
/* it doesn't make sense to route a pprop packet, there's no meaning
|
* in the ipx_dest_net for such packets */
|
* in the ipx_dest_net for such packets */
|
if (ipx->ipx_type != IPX_TYPE_PPROP &&
|
if (ipx->ipx_type != IPX_TYPE_PPROP &&
|
intrfc->if_netnum != IPX_SKB_CB(skb)->ipx_dest_net) {
|
intrfc->if_netnum != IPX_SKB_CB(skb)->ipx_dest_net) {
|
/* We only route point-to-point packets. */
|
/* We only route point-to-point packets. */
|
if (skb->pkt_type == PACKET_HOST) {
|
if (skb->pkt_type == PACKET_HOST) {
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
if (skb)
|
if (skb)
|
ret = ipxrtr_route_skb(skb);
|
ret = ipxrtr_route_skb(skb);
|
goto out_intrfc;
|
goto out_intrfc;
|
}
|
}
|
|
|
goto out_free_skb;
|
goto out_free_skb;
|
}
|
}
|
|
|
/* see if we should keep it */
|
/* see if we should keep it */
|
if (!memcmp(ipx_broadcast_node, ipx->ipx_dest.node, IPX_NODE_LEN) ||
|
if (!memcmp(ipx_broadcast_node, ipx->ipx_dest.node, IPX_NODE_LEN) ||
|
!memcmp(intrfc->if_node, ipx->ipx_dest.node, IPX_NODE_LEN)) {
|
!memcmp(intrfc->if_node, ipx->ipx_dest.node, IPX_NODE_LEN)) {
|
ret = ipxitf_demux_socket(intrfc, skb, 0);
|
ret = ipxitf_demux_socket(intrfc, skb, 0);
|
goto out_intrfc;
|
goto out_intrfc;
|
}
|
}
|
|
|
/* we couldn't pawn it off so unload it */
|
/* we couldn't pawn it off so unload it */
|
out_free_skb:
|
out_free_skb:
|
kfree_skb(skb);
|
kfree_skb(skb);
|
out_intrfc:
|
out_intrfc:
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb)
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb)
|
{
|
{
|
const struct ipx_cb *cb = IPX_SKB_CB(skb);
|
const struct ipx_cb *cb = IPX_SKB_CB(skb);
|
|
|
/* see if this is an intra packet: source_net == dest_net */
|
/* see if this is an intra packet: source_net == dest_net */
|
if (cb->ipx_source_net == cb->ipx_dest_net && cb->ipx_source_net) {
|
if (cb->ipx_source_net == cb->ipx_dest_net && cb->ipx_source_net) {
|
ipx_interface *i = ipxitf_find_using_net(cb->ipx_source_net);
|
ipx_interface *i = ipxitf_find_using_net(cb->ipx_source_net);
|
/* NB: NetWare servers lie about their hop count so we
|
/* NB: NetWare servers lie about their hop count so we
|
* dropped the test based on it. This is the best way
|
* dropped the test based on it. This is the best way
|
* to determine this is a 0 hop count packet. */
|
* to determine this is a 0 hop count packet. */
|
if (!i) {
|
if (!i) {
|
intrfc->if_netnum = cb->ipx_source_net;
|
intrfc->if_netnum = cb->ipx_source_net;
|
ipxitf_add_local_route(intrfc);
|
ipxitf_add_local_route(intrfc);
|
} else {
|
} else {
|
printk(KERN_WARNING "IPX: Network number collision "
|
printk(KERN_WARNING "IPX: Network number collision "
|
"%lx\n %s %s and %s %s\n",
|
"%lx\n %s %s and %s %s\n",
|
(unsigned long) htonl(cb->ipx_source_net),
|
(unsigned long) htonl(cb->ipx_source_net),
|
ipx_device_name(i),
|
ipx_device_name(i),
|
ipx_frame_name(i->if_dlink_type),
|
ipx_frame_name(i->if_dlink_type),
|
ipx_device_name(intrfc),
|
ipx_device_name(intrfc),
|
ipx_frame_name(intrfc->if_dlink_type));
|
ipx_frame_name(intrfc->if_dlink_type));
|
ipxitf_put(i);
|
ipxitf_put(i);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/**
|
/**
|
* ipxitf_pprop - Process packet propagation IPX packet type 0x14, used for
|
* ipxitf_pprop - Process packet propagation IPX packet type 0x14, used for
|
* NetBIOS broadcasts
|
* NetBIOS broadcasts
|
* @intrfc: IPX interface receiving this packet
|
* @intrfc: IPX interface receiving this packet
|
* @skb: Received packet
|
* @skb: Received packet
|
*
|
*
|
* Checks if packet is valid: if its more than %IPX_MAX_PPROP_HOPS hops or if it
|
* Checks if packet is valid: if its more than %IPX_MAX_PPROP_HOPS hops or if it
|
* is smaller than a IPX header + the room for %IPX_MAX_PPROP_HOPS hops we drop
|
* is smaller than a IPX header + the room for %IPX_MAX_PPROP_HOPS hops we drop
|
* it, not even processing it locally, if it has exact %IPX_MAX_PPROP_HOPS we
|
* it, not even processing it locally, if it has exact %IPX_MAX_PPROP_HOPS we
|
* don't broadcast it, but process it locally. See chapter 5 of Novell's "IPX
|
* don't broadcast it, but process it locally. See chapter 5 of Novell's "IPX
|
* RIP and SAP Router Specification", Part Number 107-000029-001.
|
* RIP and SAP Router Specification", Part Number 107-000029-001.
|
*
|
*
|
* If it is valid, check if we have pprop broadcasting enabled by the user,
|
* If it is valid, check if we have pprop broadcasting enabled by the user,
|
* if not, just return zero for local processing.
|
* if not, just return zero for local processing.
|
*
|
*
|
* If it is enabled check the packet and don't broadcast it if we have already
|
* If it is enabled check the packet and don't broadcast it if we have already
|
* seen this packet.
|
* seen this packet.
|
*
|
*
|
* Broadcast: send it to the interfaces that aren't on the packet visited nets
|
* Broadcast: send it to the interfaces that aren't on the packet visited nets
|
* array, just after the IPX header.
|
* array, just after the IPX header.
|
*
|
*
|
* Returns -EINVAL for invalid packets, so that the calling function drops
|
* Returns -EINVAL for invalid packets, so that the calling function drops
|
* the packet without local processing. 0 if packet is to be locally processed.
|
* the packet without local processing. 0 if packet is to be locally processed.
|
*/
|
*/
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb)
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
int i, ret = -EINVAL;
|
int i, ret = -EINVAL;
|
ipx_interface *ifcs;
|
ipx_interface *ifcs;
|
char *c;
|
char *c;
|
u32 *l;
|
u32 *l;
|
|
|
/* Illegal packet - too many hops or too short */
|
/* Illegal packet - too many hops or too short */
|
/* We decide to throw it away: no broadcasting, no local processing.
|
/* We decide to throw it away: no broadcasting, no local processing.
|
* NetBIOS unaware implementations route them as normal packets -
|
* NetBIOS unaware implementations route them as normal packets -
|
* tctrl <= 15, any data payload... */
|
* tctrl <= 15, any data payload... */
|
if (IPX_SKB_CB(skb)->ipx_tctrl > IPX_MAX_PPROP_HOPS ||
|
if (IPX_SKB_CB(skb)->ipx_tctrl > IPX_MAX_PPROP_HOPS ||
|
ntohs(ipx->ipx_pktsize) < sizeof(struct ipxhdr) +
|
ntohs(ipx->ipx_pktsize) < sizeof(struct ipxhdr) +
|
IPX_MAX_PPROP_HOPS * sizeof(u32))
|
IPX_MAX_PPROP_HOPS * sizeof(u32))
|
goto out;
|
goto out;
|
/* are we broadcasting this damn thing? */
|
/* are we broadcasting this damn thing? */
|
ret = 0;
|
ret = 0;
|
if (!sysctl_ipx_pprop_broadcasting)
|
if (!sysctl_ipx_pprop_broadcasting)
|
goto out;
|
goto out;
|
/* We do broadcast packet on the IPX_MAX_PPROP_HOPS hop, but we
|
/* We do broadcast packet on the IPX_MAX_PPROP_HOPS hop, but we
|
* process it locally. All previous hops broadcasted it, and process it
|
* process it locally. All previous hops broadcasted it, and process it
|
* locally. */
|
* locally. */
|
if (IPX_SKB_CB(skb)->ipx_tctrl == IPX_MAX_PPROP_HOPS)
|
if (IPX_SKB_CB(skb)->ipx_tctrl == IPX_MAX_PPROP_HOPS)
|
goto out;
|
goto out;
|
|
|
c = ((u8 *) ipx) + sizeof(struct ipxhdr);
|
c = ((u8 *) ipx) + sizeof(struct ipxhdr);
|
l = (u32 *) c;
|
l = (u32 *) c;
|
|
|
/* Don't broadcast packet if already seen this net */
|
/* Don't broadcast packet if already seen this net */
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
if (*l++ == intrfc->if_netnum)
|
if (*l++ == intrfc->if_netnum)
|
goto out;
|
goto out;
|
|
|
/* < IPX_MAX_PPROP_HOPS hops && input interface not in list. Save the
|
/* < IPX_MAX_PPROP_HOPS hops && input interface not in list. Save the
|
* position where we will insert recvd netnum into list, later on,
|
* position where we will insert recvd netnum into list, later on,
|
* in ipxitf_send */
|
* in ipxitf_send */
|
IPX_SKB_CB(skb)->last_hop.index = i;
|
IPX_SKB_CB(skb)->last_hop.index = i;
|
IPX_SKB_CB(skb)->last_hop.netnum = intrfc->if_netnum;
|
IPX_SKB_CB(skb)->last_hop.netnum = intrfc->if_netnum;
|
/* xmit on all other interfaces... */
|
/* xmit on all other interfaces... */
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
for (ifcs = ipx_interfaces; ifcs; ifcs = ifcs->if_next) {
|
for (ifcs = ipx_interfaces; ifcs; ifcs = ifcs->if_next) {
|
/* Except unconfigured interfaces */
|
/* Except unconfigured interfaces */
|
if (!ifcs->if_netnum)
|
if (!ifcs->if_netnum)
|
continue;
|
continue;
|
|
|
/* That aren't in the list */
|
/* That aren't in the list */
|
if (ifcs == intrfc)
|
if (ifcs == intrfc)
|
continue;
|
continue;
|
l = (__u32 *) c;
|
l = (__u32 *) c;
|
/* don't consider the last entry in the packet list,
|
/* don't consider the last entry in the packet list,
|
* it is our netnum, and it is not there yet */
|
* it is our netnum, and it is not there yet */
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
if (ifcs->if_netnum == *l++)
|
if (ifcs->if_netnum == *l++)
|
break;
|
break;
|
if (i == IPX_SKB_CB(skb)->ipx_tctrl) {
|
if (i == IPX_SKB_CB(skb)->ipx_tctrl) {
|
struct sk_buff *s = skb_copy(skb, GFP_ATOMIC);
|
struct sk_buff *s = skb_copy(skb, GFP_ATOMIC);
|
|
|
if (s) {
|
if (s) {
|
IPX_SKB_CB(s)->ipx_dest_net = ifcs->if_netnum;
|
IPX_SKB_CB(s)->ipx_dest_net = ifcs->if_netnum;
|
ipxrtr_route_skb(s);
|
ipxrtr_route_skb(s);
|
}
|
}
|
}
|
}
|
}
|
}
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static void ipxitf_insert(ipx_interface *intrfc)
|
static void ipxitf_insert(ipx_interface *intrfc)
|
{
|
{
|
intrfc->if_next = NULL;
|
intrfc->if_next = NULL;
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
if (!ipx_interfaces)
|
if (!ipx_interfaces)
|
ipx_interfaces = intrfc;
|
ipx_interfaces = intrfc;
|
else {
|
else {
|
ipx_interface *i = ipx_interfaces;
|
ipx_interface *i = ipx_interfaces;
|
while (i->if_next)
|
while (i->if_next)
|
i = i->if_next;
|
i = i->if_next;
|
i->if_next = intrfc;
|
i->if_next = intrfc;
|
}
|
}
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
|
|
if (ipxcfg_auto_select_primary && !ipx_primary_net)
|
if (ipxcfg_auto_select_primary && !ipx_primary_net)
|
ipx_primary_net = intrfc;
|
ipx_primary_net = intrfc;
|
}
|
}
|
|
|
static ipx_interface *ipxitf_alloc(struct net_device *dev, __u32 netnum,
|
static ipx_interface *ipxitf_alloc(struct net_device *dev, __u32 netnum,
|
unsigned short dlink_type,
|
unsigned short dlink_type,
|
struct datalink_proto *dlink,
|
struct datalink_proto *dlink,
|
unsigned char internal, int ipx_offset)
|
unsigned char internal, int ipx_offset)
|
{
|
{
|
ipx_interface *intrfc = kmalloc(sizeof(*intrfc), GFP_ATOMIC);
|
ipx_interface *intrfc = kmalloc(sizeof(*intrfc), GFP_ATOMIC);
|
|
|
if (intrfc) {
|
if (intrfc) {
|
intrfc->if_dev = dev;
|
intrfc->if_dev = dev;
|
intrfc->if_netnum = netnum;
|
intrfc->if_netnum = netnum;
|
intrfc->if_dlink_type = dlink_type;
|
intrfc->if_dlink_type = dlink_type;
|
intrfc->if_dlink = dlink;
|
intrfc->if_dlink = dlink;
|
intrfc->if_internal = internal;
|
intrfc->if_internal = internal;
|
intrfc->if_ipx_offset = ipx_offset;
|
intrfc->if_ipx_offset = ipx_offset;
|
intrfc->if_sknum = IPX_MIN_EPHEMERAL_SOCKET;
|
intrfc->if_sknum = IPX_MIN_EPHEMERAL_SOCKET;
|
intrfc->if_sklist = NULL;
|
intrfc->if_sklist = NULL;
|
atomic_set(&intrfc->refcnt, 1);
|
atomic_set(&intrfc->refcnt, 1);
|
spin_lock_init(&intrfc->if_sklist_lock);
|
spin_lock_init(&intrfc->if_sklist_lock);
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
}
|
}
|
|
|
return intrfc;
|
return intrfc;
|
}
|
}
|
|
|
static int ipxitf_create_internal(ipx_interface_definition *idef)
|
static int ipxitf_create_internal(ipx_interface_definition *idef)
|
{
|
{
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
int ret = -EEXIST;
|
int ret = -EEXIST;
|
|
|
/* Only one primary network allowed */
|
/* Only one primary network allowed */
|
if (ipx_primary_net)
|
if (ipx_primary_net)
|
goto out;
|
goto out;
|
|
|
/* Must have a valid network number */
|
/* Must have a valid network number */
|
ret = -EADDRNOTAVAIL;
|
ret = -EADDRNOTAVAIL;
|
if (!idef->ipx_network)
|
if (!idef->ipx_network)
|
goto out;
|
goto out;
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
ret = -EADDRINUSE;
|
ret = -EADDRINUSE;
|
if (intrfc) {
|
if (intrfc) {
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
goto out;
|
goto out;
|
}
|
}
|
intrfc = ipxitf_alloc(NULL, idef->ipx_network, 0, NULL, 1, 0);
|
intrfc = ipxitf_alloc(NULL, idef->ipx_network, 0, NULL, 1, 0);
|
ret = -EAGAIN;
|
ret = -EAGAIN;
|
if (!intrfc)
|
if (!intrfc)
|
goto out;
|
goto out;
|
memcpy((char *)&(intrfc->if_node), idef->ipx_node, IPX_NODE_LEN);
|
memcpy((char *)&(intrfc->if_node), idef->ipx_node, IPX_NODE_LEN);
|
ipx_internal_net = ipx_primary_net = intrfc;
|
ipx_internal_net = ipx_primary_net = intrfc;
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
ipxitf_insert(intrfc);
|
ipxitf_insert(intrfc);
|
|
|
ret = ipxitf_add_local_route(intrfc);
|
ret = ipxitf_add_local_route(intrfc);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_map_frame_type(unsigned char type)
|
static int ipx_map_frame_type(unsigned char type)
|
{
|
{
|
int ret = 0;
|
int ret = 0;
|
|
|
switch (type) {
|
switch (type) {
|
case IPX_FRAME_ETHERII:
|
case IPX_FRAME_ETHERII:
|
ret = __constant_htons(ETH_P_IPX);
|
ret = __constant_htons(ETH_P_IPX);
|
break;
|
break;
|
case IPX_FRAME_8022:
|
case IPX_FRAME_8022:
|
ret = __constant_htons(ETH_P_802_2);
|
ret = __constant_htons(ETH_P_802_2);
|
break;
|
break;
|
case IPX_FRAME_SNAP:
|
case IPX_FRAME_SNAP:
|
ret = __constant_htons(ETH_P_SNAP);
|
ret = __constant_htons(ETH_P_SNAP);
|
break;
|
break;
|
case IPX_FRAME_8023:
|
case IPX_FRAME_8023:
|
ret = __constant_htons(ETH_P_802_3);
|
ret = __constant_htons(ETH_P_802_3);
|
break;
|
break;
|
}
|
}
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static int ipxitf_create(ipx_interface_definition *idef)
|
static int ipxitf_create(ipx_interface_definition *idef)
|
{
|
{
|
struct net_device *dev;
|
struct net_device *dev;
|
unsigned short dlink_type = 0;
|
unsigned short dlink_type = 0;
|
struct datalink_proto *datalink = NULL;
|
struct datalink_proto *datalink = NULL;
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
int err;
|
int err;
|
|
|
if (idef->ipx_special == IPX_INTERNAL) {
|
if (idef->ipx_special == IPX_INTERNAL) {
|
err = ipxitf_create_internal(idef);
|
err = ipxitf_create_internal(idef);
|
goto out;
|
goto out;
|
}
|
}
|
|
|
err = -EEXIST;
|
err = -EEXIST;
|
if (idef->ipx_special == IPX_PRIMARY && ipx_primary_net)
|
if (idef->ipx_special == IPX_PRIMARY && ipx_primary_net)
|
goto out;
|
goto out;
|
|
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
err = -EADDRINUSE;
|
err = -EADDRINUSE;
|
if (idef->ipx_network && intrfc) {
|
if (idef->ipx_network && intrfc) {
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
goto out;
|
goto out;
|
}
|
}
|
|
|
if (intrfc)
|
if (intrfc)
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
|
|
dev = dev_get_by_name(idef->ipx_device);
|
dev = dev_get_by_name(idef->ipx_device);
|
err = -ENODEV;
|
err = -ENODEV;
|
if (!dev)
|
if (!dev)
|
goto out;
|
goto out;
|
|
|
switch (idef->ipx_dlink_type) {
|
switch (idef->ipx_dlink_type) {
|
case IPX_FRAME_TR_8022:
|
case IPX_FRAME_TR_8022:
|
printk(KERN_WARNING "IPX frame type 802.2TR is "
|
printk(KERN_WARNING "IPX frame type 802.2TR is "
|
"obsolete Use 802.2 instead.\n");
|
"obsolete Use 802.2 instead.\n");
|
/* fall through */
|
/* fall through */
|
case IPX_FRAME_8022:
|
case IPX_FRAME_8022:
|
dlink_type = __constant_htons(ETH_P_802_2);
|
dlink_type = __constant_htons(ETH_P_802_2);
|
datalink = p8022_datalink;
|
datalink = p8022_datalink;
|
break;
|
break;
|
case IPX_FRAME_ETHERII:
|
case IPX_FRAME_ETHERII:
|
if (dev->type != ARPHRD_IEEE802) {
|
if (dev->type != ARPHRD_IEEE802) {
|
dlink_type = __constant_htons(ETH_P_IPX);
|
dlink_type = __constant_htons(ETH_P_IPX);
|
datalink = pEII_datalink;
|
datalink = pEII_datalink;
|
break;
|
break;
|
} else
|
} else
|
printk(KERN_WARNING "IPX frame type EtherII "
|
printk(KERN_WARNING "IPX frame type EtherII "
|
"over token-ring is obsolete. Use SNAP "
|
"over token-ring is obsolete. Use SNAP "
|
"instead.\n");
|
"instead.\n");
|
/* fall through */
|
/* fall through */
|
case IPX_FRAME_SNAP:
|
case IPX_FRAME_SNAP:
|
dlink_type = __constant_htons(ETH_P_SNAP);
|
dlink_type = __constant_htons(ETH_P_SNAP);
|
datalink = pSNAP_datalink;
|
datalink = pSNAP_datalink;
|
break;
|
break;
|
case IPX_FRAME_8023:
|
case IPX_FRAME_8023:
|
dlink_type = __constant_htons(ETH_P_802_3);
|
dlink_type = __constant_htons(ETH_P_802_3);
|
datalink = p8023_datalink;
|
datalink = p8023_datalink;
|
break;
|
break;
|
case IPX_FRAME_NONE:
|
case IPX_FRAME_NONE:
|
default:
|
default:
|
err = -EPROTONOSUPPORT;
|
err = -EPROTONOSUPPORT;
|
goto out_dev;
|
goto out_dev;
|
}
|
}
|
|
|
err = -ENETDOWN;
|
err = -ENETDOWN;
|
if (!(dev->flags & IFF_UP))
|
if (!(dev->flags & IFF_UP))
|
goto out_dev;
|
goto out_dev;
|
|
|
/* Check addresses are suitable */
|
/* Check addresses are suitable */
|
err = -EINVAL;
|
err = -EINVAL;
|
if (dev->addr_len > IPX_NODE_LEN)
|
if (dev->addr_len > IPX_NODE_LEN)
|
goto out_dev;
|
goto out_dev;
|
|
|
intrfc = ipxitf_find_using_phys(dev, dlink_type);
|
intrfc = ipxitf_find_using_phys(dev, dlink_type);
|
if (!intrfc) {
|
if (!intrfc) {
|
/* Ok now create */
|
/* Ok now create */
|
intrfc = ipxitf_alloc(dev, idef->ipx_network, dlink_type,
|
intrfc = ipxitf_alloc(dev, idef->ipx_network, dlink_type,
|
datalink, 0, dev->hard_header_len +
|
datalink, 0, dev->hard_header_len +
|
datalink->header_length);
|
datalink->header_length);
|
err = -EAGAIN;
|
err = -EAGAIN;
|
if (!intrfc)
|
if (!intrfc)
|
goto out_dev;
|
goto out_dev;
|
/* Setup primary if necessary */
|
/* Setup primary if necessary */
|
if (idef->ipx_special == IPX_PRIMARY)
|
if (idef->ipx_special == IPX_PRIMARY)
|
ipx_primary_net = intrfc;
|
ipx_primary_net = intrfc;
|
if (!memcmp(idef->ipx_node, "\000\000\000\000\000\000",
|
if (!memcmp(idef->ipx_node, "\000\000\000\000\000\000",
|
IPX_NODE_LEN)) {
|
IPX_NODE_LEN)) {
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
memcpy(intrfc->if_node + IPX_NODE_LEN - dev->addr_len,
|
memcpy(intrfc->if_node + IPX_NODE_LEN - dev->addr_len,
|
dev->dev_addr, dev->addr_len);
|
dev->dev_addr, dev->addr_len);
|
} else
|
} else
|
memcpy(intrfc->if_node, idef->ipx_node, IPX_NODE_LEN);
|
memcpy(intrfc->if_node, idef->ipx_node, IPX_NODE_LEN);
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
ipxitf_insert(intrfc);
|
ipxitf_insert(intrfc);
|
}
|
}
|
|
|
|
|
/* If the network number is known, add a route */
|
/* If the network number is known, add a route */
|
err = 0;
|
err = 0;
|
if (!intrfc->if_netnum)
|
if (!intrfc->if_netnum)
|
goto out_intrfc;
|
goto out_intrfc;
|
|
|
err = ipxitf_add_local_route(intrfc);
|
err = ipxitf_add_local_route(intrfc);
|
out_intrfc:
|
out_intrfc:
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
goto out;
|
goto out;
|
out_dev:
|
out_dev:
|
dev_put(dev);
|
dev_put(dev);
|
out: return err;
|
out: return err;
|
}
|
}
|
|
|
static int ipxitf_delete(ipx_interface_definition *idef)
|
static int ipxitf_delete(ipx_interface_definition *idef)
|
{
|
{
|
struct net_device *dev = NULL;
|
struct net_device *dev = NULL;
|
unsigned short dlink_type = 0;
|
unsigned short dlink_type = 0;
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
int ret = 0;
|
int ret = 0;
|
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
if (idef->ipx_special == IPX_INTERNAL) {
|
if (idef->ipx_special == IPX_INTERNAL) {
|
if (ipx_internal_net) {
|
if (ipx_internal_net) {
|
__ipxitf_put(ipx_internal_net);
|
__ipxitf_put(ipx_internal_net);
|
goto out;
|
goto out;
|
}
|
}
|
ret = -ENOENT;
|
ret = -ENOENT;
|
goto out;
|
goto out;
|
}
|
}
|
|
|
dlink_type = ipx_map_frame_type(idef->ipx_dlink_type);
|
dlink_type = ipx_map_frame_type(idef->ipx_dlink_type);
|
ret = -EPROTONOSUPPORT;
|
ret = -EPROTONOSUPPORT;
|
if (!dlink_type)
|
if (!dlink_type)
|
goto out;
|
goto out;
|
|
|
dev = __dev_get_by_name(idef->ipx_device);
|
dev = __dev_get_by_name(idef->ipx_device);
|
ret = -ENODEV;
|
ret = -ENODEV;
|
if (!dev)
|
if (!dev)
|
goto out;
|
goto out;
|
|
|
intrfc = __ipxitf_find_using_phys(dev, dlink_type);
|
intrfc = __ipxitf_find_using_phys(dev, dlink_type);
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if (!intrfc)
|
if (!intrfc)
|
goto out;
|
goto out;
|
__ipxitf_put(intrfc);
|
__ipxitf_put(intrfc);
|
|
|
ret = 0;
|
ret = 0;
|
out: spin_unlock_bh(&ipx_interfaces_lock);
|
out: spin_unlock_bh(&ipx_interfaces_lock);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static ipx_interface *ipxitf_auto_create(struct net_device *dev,
|
static ipx_interface *ipxitf_auto_create(struct net_device *dev,
|
unsigned short dlink_type)
|
unsigned short dlink_type)
|
{
|
{
|
ipx_interface *intrfc = NULL;
|
ipx_interface *intrfc = NULL;
|
struct datalink_proto *datalink;
|
struct datalink_proto *datalink;
|
|
|
if (!dev)
|
if (!dev)
|
goto out;
|
goto out;
|
|
|
/* Check addresses are suitable */
|
/* Check addresses are suitable */
|
if (dev->addr_len > IPX_NODE_LEN)
|
if (dev->addr_len > IPX_NODE_LEN)
|
goto out;
|
goto out;
|
|
|
switch (htons(dlink_type)) {
|
switch (htons(dlink_type)) {
|
case ETH_P_IPX:
|
case ETH_P_IPX:
|
datalink = pEII_datalink;
|
datalink = pEII_datalink;
|
break;
|
break;
|
|
|
case ETH_P_802_2:
|
case ETH_P_802_2:
|
datalink = p8022_datalink;
|
datalink = p8022_datalink;
|
break;
|
break;
|
|
|
case ETH_P_SNAP:
|
case ETH_P_SNAP:
|
datalink = pSNAP_datalink;
|
datalink = pSNAP_datalink;
|
break;
|
break;
|
|
|
case ETH_P_802_3:
|
case ETH_P_802_3:
|
datalink = p8023_datalink;
|
datalink = p8023_datalink;
|
break;
|
break;
|
|
|
default:
|
default:
|
goto out;
|
goto out;
|
}
|
}
|
|
|
intrfc = ipxitf_alloc(dev, 0, dlink_type, datalink, 0,
|
intrfc = ipxitf_alloc(dev, 0, dlink_type, datalink, 0,
|
dev->hard_header_len + datalink->header_length);
|
dev->hard_header_len + datalink->header_length);
|
|
|
if (intrfc) {
|
if (intrfc) {
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
memcpy((char *)&(intrfc->if_node[IPX_NODE_LEN-dev->addr_len]),
|
memcpy((char *)&(intrfc->if_node[IPX_NODE_LEN-dev->addr_len]),
|
dev->dev_addr, dev->addr_len);
|
dev->dev_addr, dev->addr_len);
|
spin_lock_init(&intrfc->if_sklist_lock);
|
spin_lock_init(&intrfc->if_sklist_lock);
|
atomic_set(&intrfc->refcnt, 1);
|
atomic_set(&intrfc->refcnt, 1);
|
ipxitf_insert(intrfc);
|
ipxitf_insert(intrfc);
|
dev_hold(dev);
|
dev_hold(dev);
|
}
|
}
|
|
|
out: return intrfc;
|
out: return intrfc;
|
}
|
}
|
|
|
static int ipxitf_ioctl(unsigned int cmd, void *arg)
|
static int ipxitf_ioctl(unsigned int cmd, void *arg)
|
{
|
{
|
struct ifreq ifr;
|
struct ifreq ifr;
|
int val;
|
int val;
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case SIOCSIFADDR: {
|
case SIOCSIFADDR: {
|
struct sockaddr_ipx *sipx;
|
struct sockaddr_ipx *sipx;
|
ipx_interface_definition f;
|
ipx_interface_definition f;
|
|
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
if (sipx->sipx_family != AF_IPX)
|
if (sipx->sipx_family != AF_IPX)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
f.ipx_network = sipx->sipx_network;
|
f.ipx_network = sipx->sipx_network;
|
memcpy(f.ipx_device, ifr.ifr_name,
|
memcpy(f.ipx_device, ifr.ifr_name,
|
sizeof(f.ipx_device));
|
sizeof(f.ipx_device));
|
memcpy(f.ipx_node, sipx->sipx_node, IPX_NODE_LEN);
|
memcpy(f.ipx_node, sipx->sipx_node, IPX_NODE_LEN);
|
f.ipx_dlink_type = sipx->sipx_type;
|
f.ipx_dlink_type = sipx->sipx_type;
|
f.ipx_special = sipx->sipx_special;
|
f.ipx_special = sipx->sipx_special;
|
|
|
if (sipx->sipx_action == IPX_DLTITF)
|
if (sipx->sipx_action == IPX_DLTITF)
|
return ipxitf_delete(&f);
|
return ipxitf_delete(&f);
|
else
|
else
|
return ipxitf_create(&f);
|
return ipxitf_create(&f);
|
}
|
}
|
|
|
case SIOCGIFADDR: {
|
case SIOCGIFADDR: {
|
int err = 0;
|
int err = 0;
|
struct sockaddr_ipx *sipx;
|
struct sockaddr_ipx *sipx;
|
ipx_interface *ipxif;
|
ipx_interface *ipxif;
|
struct net_device *dev;
|
struct net_device *dev;
|
|
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
dev = __dev_get_by_name(ifr.ifr_name);
|
dev = __dev_get_by_name(ifr.ifr_name);
|
if (!dev)
|
if (!dev)
|
return -ENODEV;
|
return -ENODEV;
|
|
|
ipxif = ipxitf_find_using_phys(dev, ipx_map_frame_type(sipx->sipx_type));
|
ipxif = ipxitf_find_using_phys(dev, ipx_map_frame_type(sipx->sipx_type));
|
if (!ipxif)
|
if (!ipxif)
|
return -EADDRNOTAVAIL;
|
return -EADDRNOTAVAIL;
|
|
|
sipx->sipx_family = AF_IPX;
|
sipx->sipx_family = AF_IPX;
|
sipx->sipx_network = ipxif->if_netnum;
|
sipx->sipx_network = ipxif->if_netnum;
|
memcpy(sipx->sipx_node, ipxif->if_node,
|
memcpy(sipx->sipx_node, ipxif->if_node,
|
sizeof(sipx->sipx_node));
|
sizeof(sipx->sipx_node));
|
if (copy_to_user(arg, &ifr, sizeof(ifr)))
|
if (copy_to_user(arg, &ifr, sizeof(ifr)))
|
err = -EFAULT;
|
err = -EFAULT;
|
|
|
ipxitf_put(ipxif);
|
ipxitf_put(ipxif);
|
return err;
|
return err;
|
}
|
}
|
|
|
case SIOCAIPXITFCRT:
|
case SIOCAIPXITFCRT:
|
if (get_user(val, (unsigned char *) arg))
|
if (get_user(val, (unsigned char *) arg))
|
return -EFAULT;
|
return -EFAULT;
|
ipxcfg_set_auto_create(val);
|
ipxcfg_set_auto_create(val);
|
break;
|
break;
|
|
|
case SIOCAIPXPRISLT:
|
case SIOCAIPXPRISLT:
|
if (get_user(val, (unsigned char *) arg))
|
if (get_user(val, (unsigned char *) arg))
|
return -EFAULT;
|
return -EFAULT;
|
ipxcfg_set_auto_select(val);
|
ipxcfg_set_auto_select(val);
|
break;
|
break;
|
|
|
default:
|
default:
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Routing tables for the IPX socket layer. */
|
/* Routing tables for the IPX socket layer. */
|
|
|
static inline void ipxrtr_hold(ipx_route *rt)
|
static inline void ipxrtr_hold(ipx_route *rt)
|
{
|
{
|
atomic_inc(&rt->refcnt);
|
atomic_inc(&rt->refcnt);
|
}
|
}
|
|
|
static inline void ipxrtr_put(ipx_route *rt)
|
static inline void ipxrtr_put(ipx_route *rt)
|
{
|
{
|
if (atomic_dec_and_test(&rt->refcnt))
|
if (atomic_dec_and_test(&rt->refcnt))
|
kfree(rt);
|
kfree(rt);
|
}
|
}
|
|
|
static ipx_route *ipxrtr_lookup(__u32 net)
|
static ipx_route *ipxrtr_lookup(__u32 net)
|
{
|
{
|
ipx_route *r;
|
ipx_route *r;
|
|
|
read_lock_bh(&ipx_routes_lock);
|
read_lock_bh(&ipx_routes_lock);
|
for (r = ipx_routes; r && r->ir_net != net; r = r->ir_next)
|
for (r = ipx_routes; r && r->ir_net != net; r = r->ir_next)
|
;
|
;
|
if (r)
|
if (r)
|
ipxrtr_hold(r);
|
ipxrtr_hold(r);
|
read_unlock_bh(&ipx_routes_lock);
|
read_unlock_bh(&ipx_routes_lock);
|
|
|
return r;
|
return r;
|
}
|
}
|
|
|
/* caller must hold a reference to intrfc */
|
/* caller must hold a reference to intrfc */
|
|
|
static int ipxrtr_add_route(__u32 network, ipx_interface *intrfc,
|
static int ipxrtr_add_route(__u32 network, ipx_interface *intrfc,
|
unsigned char *node)
|
unsigned char *node)
|
{
|
{
|
ipx_route *rt;
|
ipx_route *rt;
|
int ret;
|
int ret;
|
|
|
/* Get a route structure; either existing or create */
|
/* Get a route structure; either existing or create */
|
rt = ipxrtr_lookup(network);
|
rt = ipxrtr_lookup(network);
|
if (!rt) {
|
if (!rt) {
|
rt = kmalloc(sizeof(ipx_route), GFP_ATOMIC);
|
rt = kmalloc(sizeof(ipx_route), GFP_ATOMIC);
|
ret = -EAGAIN;
|
ret = -EAGAIN;
|
if (!rt)
|
if (!rt)
|
goto out;
|
goto out;
|
|
|
atomic_set(&rt->refcnt, 1);
|
atomic_set(&rt->refcnt, 1);
|
ipxrtr_hold(rt);
|
ipxrtr_hold(rt);
|
write_lock_bh(&ipx_routes_lock);
|
write_lock_bh(&ipx_routes_lock);
|
rt->ir_next = ipx_routes;
|
rt->ir_next = ipx_routes;
|
ipx_routes = rt;
|
ipx_routes = rt;
|
write_unlock_bh(&ipx_routes_lock);
|
write_unlock_bh(&ipx_routes_lock);
|
} else {
|
} else {
|
ret = -EEXIST;
|
ret = -EEXIST;
|
if (intrfc == ipx_internal_net)
|
if (intrfc == ipx_internal_net)
|
goto out_put;
|
goto out_put;
|
}
|
}
|
|
|
rt->ir_net = network;
|
rt->ir_net = network;
|
rt->ir_intrfc = intrfc;
|
rt->ir_intrfc = intrfc;
|
if (!node) {
|
if (!node) {
|
memset(rt->ir_router_node, '\0', IPX_NODE_LEN);
|
memset(rt->ir_router_node, '\0', IPX_NODE_LEN);
|
rt->ir_routed = 0;
|
rt->ir_routed = 0;
|
} else {
|
} else {
|
memcpy(rt->ir_router_node, node, IPX_NODE_LEN);
|
memcpy(rt->ir_router_node, node, IPX_NODE_LEN);
|
rt->ir_routed = 1;
|
rt->ir_routed = 1;
|
}
|
}
|
|
|
ret = 0;
|
ret = 0;
|
out_put:
|
out_put:
|
ipxrtr_put(rt);
|
ipxrtr_put(rt);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static void ipxrtr_del_routes(ipx_interface *intrfc)
|
static void ipxrtr_del_routes(ipx_interface *intrfc)
|
{
|
{
|
ipx_route **r, *tmp;
|
ipx_route **r, *tmp;
|
|
|
write_lock_bh(&ipx_routes_lock);
|
write_lock_bh(&ipx_routes_lock);
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
if (tmp->ir_intrfc == intrfc) {
|
if (tmp->ir_intrfc == intrfc) {
|
*r = tmp->ir_next;
|
*r = tmp->ir_next;
|
ipxrtr_put(tmp);
|
ipxrtr_put(tmp);
|
} else
|
} else
|
r = &(tmp->ir_next);
|
r = &(tmp->ir_next);
|
}
|
}
|
write_unlock_bh(&ipx_routes_lock);
|
write_unlock_bh(&ipx_routes_lock);
|
}
|
}
|
|
|
static int ipxrtr_create(ipx_route_definition *rd)
|
static int ipxrtr_create(ipx_route_definition *rd)
|
{
|
{
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
int ret = -ENETUNREACH;
|
int ret = -ENETUNREACH;
|
|
|
/* Find the appropriate interface */
|
/* Find the appropriate interface */
|
intrfc = ipxitf_find_using_net(rd->ipx_router_network);
|
intrfc = ipxitf_find_using_net(rd->ipx_router_network);
|
if (!intrfc)
|
if (!intrfc)
|
goto out;
|
goto out;
|
ret = ipxrtr_add_route(rd->ipx_network, intrfc, rd->ipx_router_node);
|
ret = ipxrtr_add_route(rd->ipx_network, intrfc, rd->ipx_router_node);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipxrtr_delete(long net)
|
static int ipxrtr_delete(long net)
|
{
|
{
|
ipx_route **r;
|
ipx_route **r;
|
ipx_route *tmp;
|
ipx_route *tmp;
|
int err;
|
int err;
|
|
|
write_lock_bh(&ipx_routes_lock);
|
write_lock_bh(&ipx_routes_lock);
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
if (tmp->ir_net == net) {
|
if (tmp->ir_net == net) {
|
/* Directly connected; can't lose route */
|
/* Directly connected; can't lose route */
|
err = -EPERM;
|
err = -EPERM;
|
if (!tmp->ir_routed)
|
if (!tmp->ir_routed)
|
goto out;
|
goto out;
|
|
|
*r = tmp->ir_next;
|
*r = tmp->ir_next;
|
ipxrtr_put(tmp);
|
ipxrtr_put(tmp);
|
err = 0;
|
err = 0;
|
goto out;
|
goto out;
|
}
|
}
|
|
|
r = &(tmp->ir_next);
|
r = &(tmp->ir_next);
|
}
|
}
|
err = -ENOENT;
|
err = -ENOENT;
|
out: write_unlock_bh(&ipx_routes_lock);
|
out: write_unlock_bh(&ipx_routes_lock);
|
return err;
|
return err;
|
}
|
}
|
|
|
/*
|
/*
|
* Checksum routine for IPX
|
* Checksum routine for IPX
|
*/
|
*/
|
|
|
/* Note: We assume ipx_tctrl==0 and htons(length)==ipx_pktsize */
|
/* Note: We assume ipx_tctrl==0 and htons(length)==ipx_pktsize */
|
/* This functions should *not* mess with packet contents */
|
/* This functions should *not* mess with packet contents */
|
|
|
static __u16 ipx_cksum(struct ipxhdr *packet, int length)
|
static __u16 ipx_cksum(struct ipxhdr *packet, int length)
|
{
|
{
|
/*
|
/*
|
* NOTE: sum is a net byte order quantity, which optimizes the
|
* NOTE: sum is a net byte order quantity, which optimizes the
|
* loop. This only works on big and little endian machines. (I
|
* loop. This only works on big and little endian machines. (I
|
* don't know of a machine that isn't.)
|
* don't know of a machine that isn't.)
|
*/
|
*/
|
/* start at ipx_dest - We skip the checksum field and start with
|
/* start at ipx_dest - We skip the checksum field and start with
|
* ipx_type before the loop, not considering ipx_tctrl in the calc */
|
* ipx_type before the loop, not considering ipx_tctrl in the calc */
|
__u16 *p = (__u16 *)&packet->ipx_dest;
|
__u16 *p = (__u16 *)&packet->ipx_dest;
|
__u32 i = (length >> 1) - 1; /* Number of complete words */
|
__u32 i = (length >> 1) - 1; /* Number of complete words */
|
__u32 sum = packet->ipx_type << sizeof(packet->ipx_tctrl);
|
__u32 sum = packet->ipx_type << sizeof(packet->ipx_tctrl);
|
|
|
/* Loop through all complete words except the checksum field,
|
/* Loop through all complete words except the checksum field,
|
* ipx_type (accounted above) and ipx_tctrl (not used in the cksum) */
|
* ipx_type (accounted above) and ipx_tctrl (not used in the cksum) */
|
while (--i)
|
while (--i)
|
sum += *p++;
|
sum += *p++;
|
|
|
/* Add on the last part word if it exists */
|
/* Add on the last part word if it exists */
|
if (packet->ipx_pktsize & __constant_htons(1))
|
if (packet->ipx_pktsize & __constant_htons(1))
|
sum += ntohs(0xff00) & *p;
|
sum += ntohs(0xff00) & *p;
|
|
|
/* Do final fixup */
|
/* Do final fixup */
|
sum = (sum & 0xffff) + (sum >> 16);
|
sum = (sum & 0xffff) + (sum >> 16);
|
|
|
/* It's a pity there's no concept of carry in C */
|
/* It's a pity there's no concept of carry in C */
|
if (sum >= 0x10000)
|
if (sum >= 0x10000)
|
sum++;
|
sum++;
|
|
|
return ~sum;
|
return ~sum;
|
}
|
}
|
|
|
/*
|
/*
|
* Route an outgoing frame from a socket.
|
* Route an outgoing frame from a socket.
|
*/
|
*/
|
static int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
|
static int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
|
struct iovec *iov, int len, int noblock)
|
struct iovec *iov, int len, int noblock)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
struct ipxhdr *ipx;
|
struct ipxhdr *ipx;
|
int size;
|
int size;
|
int ipx_offset;
|
int ipx_offset;
|
ipx_route *rt = NULL;
|
ipx_route *rt = NULL;
|
int err;
|
int err;
|
|
|
/* Find the appropriate interface on which to send packet */
|
/* Find the appropriate interface on which to send packet */
|
if (!usipx->sipx_network && ipx_primary_net) {
|
if (!usipx->sipx_network && ipx_primary_net) {
|
usipx->sipx_network = ipx_primary_net->if_netnum;
|
usipx->sipx_network = ipx_primary_net->if_netnum;
|
intrfc = ipx_primary_net;
|
intrfc = ipx_primary_net;
|
} else {
|
} else {
|
rt = ipxrtr_lookup(usipx->sipx_network);
|
rt = ipxrtr_lookup(usipx->sipx_network);
|
err = -ENETUNREACH;
|
err = -ENETUNREACH;
|
if (!rt)
|
if (!rt)
|
goto out;
|
goto out;
|
intrfc = rt->ir_intrfc;
|
intrfc = rt->ir_intrfc;
|
}
|
}
|
|
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
ipx_offset = intrfc->if_ipx_offset;
|
ipx_offset = intrfc->if_ipx_offset;
|
size = sizeof(struct ipxhdr) + len + ipx_offset;
|
size = sizeof(struct ipxhdr) + len + ipx_offset;
|
|
|
skb = sock_alloc_send_skb(sk, size, noblock, &err);
|
skb = sock_alloc_send_skb(sk, size, noblock, &err);
|
if (!skb)
|
if (!skb)
|
goto out_put;
|
goto out_put;
|
|
|
skb_reserve(skb, ipx_offset);
|
skb_reserve(skb, ipx_offset);
|
skb->sk = sk;
|
skb->sk = sk;
|
|
|
/* Fill in IPX header */
|
/* Fill in IPX header */
|
ipx = (struct ipxhdr *)skb_put(skb, sizeof(struct ipxhdr));
|
ipx = (struct ipxhdr *)skb_put(skb, sizeof(struct ipxhdr));
|
ipx->ipx_pktsize = htons(len + sizeof(struct ipxhdr));
|
ipx->ipx_pktsize = htons(len + sizeof(struct ipxhdr));
|
IPX_SKB_CB(skb)->ipx_tctrl = 0;
|
IPX_SKB_CB(skb)->ipx_tctrl = 0;
|
ipx->ipx_type = usipx->sipx_type;
|
ipx->ipx_type = usipx->sipx_type;
|
skb->h.raw = (void *)skb->nh.ipxh = ipx;
|
skb->h.raw = (void *)skb->nh.ipxh = ipx;
|
|
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
IPX_SKB_CB(skb)->ipx_source_net = sk->protinfo.af_ipx.intrfc->if_netnum;
|
IPX_SKB_CB(skb)->ipx_source_net = sk->protinfo.af_ipx.intrfc->if_netnum;
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.node, IPX_NODE_LEN);
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.node, IPX_NODE_LEN);
|
#else
|
#else
|
err = ntohs(sk->protinfo.af_ipx.port);
|
err = ntohs(sk->protinfo.af_ipx.port);
|
if (err == 0x453 || err == 0x452) {
|
if (err == 0x453 || err == 0x452) {
|
/* RIP/SAP special handling for mars_nwe */
|
/* RIP/SAP special handling for mars_nwe */
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
memcpy(ipx->ipx_source.node, intrfc->if_node, IPX_NODE_LEN);
|
memcpy(ipx->ipx_source.node, intrfc->if_node, IPX_NODE_LEN);
|
} else {
|
} else {
|
IPX_SKB_CB(skb)->ipx_source_net =
|
IPX_SKB_CB(skb)->ipx_source_net =
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
}
|
}
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
ipx->ipx_source.sock = sk->protinfo.af_ipx.port;
|
ipx->ipx_source.sock = sk->protinfo.af_ipx.port;
|
IPX_SKB_CB(skb)->ipx_dest_net = usipx->sipx_network;
|
IPX_SKB_CB(skb)->ipx_dest_net = usipx->sipx_network;
|
memcpy(ipx->ipx_dest.node, usipx->sipx_node, IPX_NODE_LEN);
|
memcpy(ipx->ipx_dest.node, usipx->sipx_node, IPX_NODE_LEN);
|
ipx->ipx_dest.sock = usipx->sipx_port;
|
ipx->ipx_dest.sock = usipx->sipx_port;
|
|
|
err = memcpy_fromiovec(skb_put(skb, len), iov, len);
|
err = memcpy_fromiovec(skb_put(skb, len), iov, len);
|
if (err) {
|
if (err) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
goto out_put;
|
goto out_put;
|
}
|
}
|
|
|
/* Apply checksum. Not allowed on 802.3 links. */
|
/* Apply checksum. Not allowed on 802.3 links. */
|
if (sk->no_check || intrfc->if_dlink_type == IPX_FRAME_8023)
|
if (sk->no_check || intrfc->if_dlink_type == IPX_FRAME_8023)
|
ipx->ipx_checksum = 0xFFFF;
|
ipx->ipx_checksum = 0xFFFF;
|
else
|
else
|
ipx->ipx_checksum = ipx_cksum(ipx, len + sizeof(struct ipxhdr));
|
ipx->ipx_checksum = ipx_cksum(ipx, len + sizeof(struct ipxhdr));
|
|
|
err = ipxitf_send(intrfc, skb, (rt && rt->ir_routed) ?
|
err = ipxitf_send(intrfc, skb, (rt && rt->ir_routed) ?
|
rt->ir_router_node : ipx->ipx_dest.node);
|
rt->ir_router_node : ipx->ipx_dest.node);
|
out_put:
|
out_put:
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
if (rt)
|
if (rt)
|
ipxrtr_put(rt);
|
ipxrtr_put(rt);
|
out: return err;
|
out: return err;
|
}
|
}
|
|
|
/* the skb has to be unshared, we'll end up calling ipxitf_send, that'll
|
/* the skb has to be unshared, we'll end up calling ipxitf_send, that'll
|
* modify the packet */
|
* modify the packet */
|
int ipxrtr_route_skb(struct sk_buff *skb)
|
int ipxrtr_route_skb(struct sk_buff *skb)
|
{
|
{
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
ipx_route *r = ipxrtr_lookup(IPX_SKB_CB(skb)->ipx_dest_net);
|
ipx_route *r = ipxrtr_lookup(IPX_SKB_CB(skb)->ipx_dest_net);
|
|
|
if (!r) { /* no known route */
|
if (!r) { /* no known route */
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
ipxitf_hold(r->ir_intrfc);
|
ipxitf_hold(r->ir_intrfc);
|
ipxitf_send(r->ir_intrfc, skb, r->ir_routed ?
|
ipxitf_send(r->ir_intrfc, skb, r->ir_routed ?
|
r->ir_router_node : ipx->ipx_dest.node);
|
r->ir_router_node : ipx->ipx_dest.node);
|
ipxitf_put(r->ir_intrfc);
|
ipxitf_put(r->ir_intrfc);
|
ipxrtr_put(r);
|
ipxrtr_put(r);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* We use a normal struct rtentry for route handling
|
* We use a normal struct rtentry for route handling
|
*/
|
*/
|
static int ipxrtr_ioctl(unsigned int cmd, void *arg)
|
static int ipxrtr_ioctl(unsigned int cmd, void *arg)
|
{
|
{
|
struct rtentry rt; /* Use these to behave like 'other' stacks */
|
struct rtentry rt; /* Use these to behave like 'other' stacks */
|
struct sockaddr_ipx *sg, *st;
|
struct sockaddr_ipx *sg, *st;
|
int ret = -EFAULT;
|
int ret = -EFAULT;
|
|
|
if (copy_from_user(&rt, arg, sizeof(rt)))
|
if (copy_from_user(&rt, arg, sizeof(rt)))
|
goto out;
|
goto out;
|
|
|
sg = (struct sockaddr_ipx *)&rt.rt_gateway;
|
sg = (struct sockaddr_ipx *)&rt.rt_gateway;
|
st = (struct sockaddr_ipx *)&rt.rt_dst;
|
st = (struct sockaddr_ipx *)&rt.rt_dst;
|
|
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if (!(rt.rt_flags & RTF_GATEWAY) || /* Direct routes are fixed */
|
if (!(rt.rt_flags & RTF_GATEWAY) || /* Direct routes are fixed */
|
sg->sipx_family != AF_IPX ||
|
sg->sipx_family != AF_IPX ||
|
st->sipx_family != AF_IPX)
|
st->sipx_family != AF_IPX)
|
goto out;
|
goto out;
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case SIOCDELRT:
|
case SIOCDELRT:
|
ret = ipxrtr_delete(st->sipx_network);
|
ret = ipxrtr_delete(st->sipx_network);
|
break;
|
break;
|
case SIOCADDRT: {
|
case SIOCADDRT: {
|
struct ipx_route_definition f;
|
struct ipx_route_definition f;
|
f.ipx_network = st->sipx_network;
|
f.ipx_network = st->sipx_network;
|
f.ipx_router_network = sg->sipx_network;
|
f.ipx_router_network = sg->sipx_network;
|
memcpy(f.ipx_router_node, sg->sipx_node, IPX_NODE_LEN);
|
memcpy(f.ipx_router_node, sg->sipx_node, IPX_NODE_LEN);
|
ret = ipxrtr_create(&f);
|
ret = ipxrtr_create(&f);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static const char *ipx_frame_name(unsigned short frame)
|
static const char *ipx_frame_name(unsigned short frame)
|
{
|
{
|
char* ret = "None";
|
char* ret = "None";
|
|
|
switch (ntohs(frame)) {
|
switch (ntohs(frame)) {
|
case ETH_P_IPX: ret = "EtherII"; break;
|
case ETH_P_IPX: ret = "EtherII"; break;
|
case ETH_P_802_2: ret = "802.2"; break;
|
case ETH_P_802_2: ret = "802.2"; break;
|
case ETH_P_SNAP: ret = "SNAP"; break;
|
case ETH_P_SNAP: ret = "SNAP"; break;
|
case ETH_P_802_3: ret = "802.3"; break;
|
case ETH_P_802_3: ret = "802.3"; break;
|
case ETH_P_TR_802_2: ret = "802.2TR"; break;
|
case ETH_P_TR_802_2: ret = "802.2TR"; break;
|
}
|
}
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static const char *ipx_device_name(ipx_interface *intrfc)
|
static const char *ipx_device_name(ipx_interface *intrfc)
|
{
|
{
|
return intrfc->if_internal ? "Internal" :
|
return intrfc->if_internal ? "Internal" :
|
intrfc->if_dev ? intrfc->if_dev->name : "Unknown";
|
intrfc->if_dev ? intrfc->if_dev->name : "Unknown";
|
}
|
}
|
|
|
/* Called from proc fs */
|
/* Called from proc fs */
|
static int ipx_interface_get_info(char *buffer, char **start, off_t offset,
|
static int ipx_interface_get_info(char *buffer, char **start, off_t offset,
|
int length)
|
int length)
|
{
|
{
|
ipx_interface *i;
|
ipx_interface *i;
|
off_t begin = 0, pos = 0;
|
off_t begin = 0, pos = 0;
|
int len = 0;
|
int len = 0;
|
|
|
/* Theory.. Keep printing in the same place until we pass offset */
|
/* Theory.. Keep printing in the same place until we pass offset */
|
|
|
len += sprintf(buffer, "%-11s%-15s%-9s%-11s%s", "Network",
|
len += sprintf(buffer, "%-11s%-15s%-9s%-11s%s", "Network",
|
"Node_Address", "Primary", "Device", "Frame_Type");
|
"Node_Address", "Primary", "Device", "Frame_Type");
|
#ifdef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
len += sprintf(buffer + len, " refcnt");
|
len += sprintf(buffer + len, " refcnt");
|
#endif
|
#endif
|
strcat(buffer + len++, "\n");
|
strcat(buffer + len++, "\n");
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
len += sprintf(buffer + len, "%08lX ",
|
len += sprintf(buffer + len, "%08lX ",
|
(long unsigned int) ntohl(i->if_netnum));
|
(long unsigned int) ntohl(i->if_netnum));
|
len += sprintf(buffer + len, "%02X%02X%02X%02X%02X%02X ",
|
len += sprintf(buffer + len, "%02X%02X%02X%02X%02X%02X ",
|
i->if_node[0], i->if_node[1], i->if_node[2],
|
i->if_node[0], i->if_node[1], i->if_node[2],
|
i->if_node[3], i->if_node[4], i->if_node[5]);
|
i->if_node[3], i->if_node[4], i->if_node[5]);
|
len += sprintf(buffer + len, "%-9s", i == ipx_primary_net ?
|
len += sprintf(buffer + len, "%-9s", i == ipx_primary_net ?
|
"Yes" : "No");
|
"Yes" : "No");
|
len += sprintf(buffer + len, "%-11s", ipx_device_name(i));
|
len += sprintf(buffer + len, "%-11s", ipx_device_name(i));
|
len += sprintf(buffer + len, "%-9s",
|
len += sprintf(buffer + len, "%-9s",
|
ipx_frame_name(i->if_dlink_type));
|
ipx_frame_name(i->if_dlink_type));
|
#ifdef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
len += sprintf(buffer + len, "%6d", atomic_read(&i->refcnt));
|
len += sprintf(buffer + len, "%6d", atomic_read(&i->refcnt));
|
#endif
|
#endif
|
strcat(buffer + len++, "\n");
|
strcat(buffer + len++, "\n");
|
/* Are we still dumping unwanted data then discard the record */
|
/* Are we still dumping unwanted data then discard the record */
|
pos = begin + len;
|
pos = begin + len;
|
|
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0; /* Keep dumping into the buffer start */
|
len = 0; /* Keep dumping into the buffer start */
|
begin = pos;
|
begin = pos;
|
}
|
}
|
if (pos > offset + length) /* We have dumped enough */
|
if (pos > offset + length) /* We have dumped enough */
|
break;
|
break;
|
}
|
}
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
|
|
/* The data in question runs from begin to begin+len */
|
/* The data in question runs from begin to begin+len */
|
*start = buffer + (offset - begin); /* Start of wanted data */
|
*start = buffer + (offset - begin); /* Start of wanted data */
|
len -= (offset - begin); /* Remove unwanted header data from length */
|
len -= (offset - begin); /* Remove unwanted header data from length */
|
if (len > length)
|
if (len > length)
|
len = length; /* Remove unwanted tail data from length */
|
len = length; /* Remove unwanted tail data from length */
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
static int ipx_get_info(char *buffer, char **start, off_t offset, int length)
|
static int ipx_get_info(char *buffer, char **start, off_t offset, int length)
|
{
|
{
|
struct sock *s;
|
struct sock *s;
|
ipx_interface *i;
|
ipx_interface *i;
|
off_t begin = 0, pos = 0;
|
off_t begin = 0, pos = 0;
|
int len = 0;
|
int len = 0;
|
|
|
/* Theory.. Keep printing in the same place until we pass offset */
|
/* Theory.. Keep printing in the same place until we pass offset */
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
len += sprintf(buffer, "%-28s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
len += sprintf(buffer, "%-28s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
#else
|
#else
|
len += sprintf(buffer, "%-15s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
len += sprintf(buffer, "%-15s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
"Remote_Address", "Tx_Queue", "Rx_Queue",
|
"Remote_Address", "Tx_Queue", "Rx_Queue",
|
"State", "Uid");
|
"State", "Uid");
|
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
spin_lock_bh(&ipx_interfaces_lock);
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
ipxitf_hold(i);
|
ipxitf_hold(i);
|
spin_lock_bh(&i->if_sklist_lock);
|
spin_lock_bh(&i->if_sklist_lock);
|
for (s = i->if_sklist; s; s = s->next) {
|
for (s = i->if_sklist; s; s = s->next) {
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
len += sprintf(buffer + len,
|
len += sprintf(buffer + len,
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
(unsigned long) htonl(s->protinfo.af_ipx.intrfc->if_netnum),
|
(unsigned long) htonl(s->protinfo.af_ipx.intrfc->if_netnum),
|
s->protinfo.af_ipx.node[0],
|
s->protinfo.af_ipx.node[0],
|
s->protinfo.af_ipx.node[1],
|
s->protinfo.af_ipx.node[1],
|
s->protinfo.af_ipx.node[2],
|
s->protinfo.af_ipx.node[2],
|
s->protinfo.af_ipx.node[3],
|
s->protinfo.af_ipx.node[3],
|
s->protinfo.af_ipx.node[4],
|
s->protinfo.af_ipx.node[4],
|
s->protinfo.af_ipx.node[5],
|
s->protinfo.af_ipx.node[5],
|
htons(s->protinfo.af_ipx.port));
|
htons(s->protinfo.af_ipx.port));
|
#else
|
#else
|
len += sprintf(buffer + len, "%08lX:%04X ",
|
len += sprintf(buffer + len, "%08lX:%04X ",
|
(unsigned long) htonl(i->if_netnum),
|
(unsigned long) htonl(i->if_netnum),
|
htons(s->protinfo.af_ipx.port));
|
htons(s->protinfo.af_ipx.port));
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
if (s->state != TCP_ESTABLISHED)
|
if (s->state != TCP_ESTABLISHED)
|
len += sprintf(buffer + len, "%-28s",
|
len += sprintf(buffer + len, "%-28s",
|
"Not_Connected");
|
"Not_Connected");
|
else {
|
else {
|
len += sprintf(buffer + len,
|
len += sprintf(buffer + len,
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
(unsigned long) htonl(s->protinfo.af_ipx.dest_addr.net),
|
(unsigned long) htonl(s->protinfo.af_ipx.dest_addr.net),
|
s->protinfo.af_ipx.dest_addr.node[0],
|
s->protinfo.af_ipx.dest_addr.node[0],
|
s->protinfo.af_ipx.dest_addr.node[1],
|
s->protinfo.af_ipx.dest_addr.node[1],
|
s->protinfo.af_ipx.dest_addr.node[2],
|
s->protinfo.af_ipx.dest_addr.node[2],
|
s->protinfo.af_ipx.dest_addr.node[3],
|
s->protinfo.af_ipx.dest_addr.node[3],
|
s->protinfo.af_ipx.dest_addr.node[4],
|
s->protinfo.af_ipx.dest_addr.node[4],
|
s->protinfo.af_ipx.dest_addr.node[5],
|
s->protinfo.af_ipx.dest_addr.node[5],
|
htons(s->protinfo.af_ipx.dest_addr.sock));
|
htons(s->protinfo.af_ipx.dest_addr.sock));
|
}
|
}
|
|
|
len += sprintf(buffer + len, "%08X %08X ",
|
len += sprintf(buffer + len, "%08X %08X ",
|
atomic_read(&s->wmem_alloc),
|
atomic_read(&s->wmem_alloc),
|
atomic_read(&s->rmem_alloc));
|
atomic_read(&s->rmem_alloc));
|
len += sprintf(buffer + len, "%02X %03d\n",
|
len += sprintf(buffer + len, "%02X %03d\n",
|
s->state, SOCK_INODE(s->socket)->i_uid);
|
s->state, SOCK_INODE(s->socket)->i_uid);
|
|
|
pos = begin + len;
|
pos = begin + len;
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0;
|
len = 0;
|
begin = pos;
|
begin = pos;
|
}
|
}
|
|
|
if (pos > offset + length) /* We have dumped enough */
|
if (pos > offset + length) /* We have dumped enough */
|
break;
|
break;
|
}
|
}
|
spin_unlock_bh(&i->if_sklist_lock);
|
spin_unlock_bh(&i->if_sklist_lock);
|
ipxitf_put(i);
|
ipxitf_put(i);
|
}
|
}
|
spin_unlock_bh(&ipx_interfaces_lock);
|
spin_unlock_bh(&ipx_interfaces_lock);
|
|
|
/* The data in question runs from begin to begin+len */
|
/* The data in question runs from begin to begin+len */
|
*start = buffer + offset - begin;
|
*start = buffer + offset - begin;
|
len -= (offset - begin);
|
len -= (offset - begin);
|
if (len > length)
|
if (len > length)
|
len = length;
|
len = length;
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
static int ipx_rt_get_info(char *buffer, char **start, off_t offset, int length)
|
static int ipx_rt_get_info(char *buffer, char **start, off_t offset, int length)
|
{
|
{
|
ipx_route *rt;
|
ipx_route *rt;
|
off_t begin = 0, pos = 0;
|
off_t begin = 0, pos = 0;
|
int len = 0;
|
int len = 0;
|
|
|
len += sprintf(buffer, "%-11s%-13s%s\n",
|
len += sprintf(buffer, "%-11s%-13s%s\n",
|
"Network", "Router_Net", "Router_Node");
|
"Network", "Router_Net", "Router_Node");
|
read_lock_bh(&ipx_routes_lock);
|
read_lock_bh(&ipx_routes_lock);
|
for (rt = ipx_routes; rt; rt = rt->ir_next) {
|
for (rt = ipx_routes; rt; rt = rt->ir_next) {
|
len += sprintf(buffer + len, "%08lX ",
|
len += sprintf(buffer + len, "%08lX ",
|
(long unsigned int) ntohl(rt->ir_net));
|
(long unsigned int) ntohl(rt->ir_net));
|
if (rt->ir_routed) {
|
if (rt->ir_routed) {
|
len += sprintf(buffer + len,
|
len += sprintf(buffer + len,
|
"%08lX %02X%02X%02X%02X%02X%02X\n",
|
"%08lX %02X%02X%02X%02X%02X%02X\n",
|
(long unsigned int) ntohl(rt->ir_intrfc->if_netnum),
|
(long unsigned int) ntohl(rt->ir_intrfc->if_netnum),
|
rt->ir_router_node[0], rt->ir_router_node[1],
|
rt->ir_router_node[0], rt->ir_router_node[1],
|
rt->ir_router_node[2], rt->ir_router_node[3],
|
rt->ir_router_node[2], rt->ir_router_node[3],
|
rt->ir_router_node[4], rt->ir_router_node[5]);
|
rt->ir_router_node[4], rt->ir_router_node[5]);
|
} else {
|
} else {
|
len += sprintf(buffer + len, "%-13s%s\n",
|
len += sprintf(buffer + len, "%-13s%s\n",
|
"Directly", "Connected");
|
"Directly", "Connected");
|
}
|
}
|
|
|
pos = begin + len;
|
pos = begin + len;
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0;
|
len = 0;
|
begin = pos;
|
begin = pos;
|
}
|
}
|
|
|
if (pos > offset + length)
|
if (pos > offset + length)
|
break;
|
break;
|
}
|
}
|
read_unlock_bh(&ipx_routes_lock);
|
read_unlock_bh(&ipx_routes_lock);
|
|
|
*start = buffer + (offset - begin);
|
*start = buffer + (offset - begin);
|
len -= (offset - begin);
|
len -= (offset - begin);
|
if (len > length)
|
if (len > length)
|
len = length;
|
len = length;
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
/* Handling for system calls applied via the various interfaces to an IPX
|
/* Handling for system calls applied via the various interfaces to an IPX
|
* socket object. */
|
* socket object. */
|
|
|
static int ipx_setsockopt(struct socket *sock, int level, int optname,
|
static int ipx_setsockopt(struct socket *sock, int level, int optname,
|
char *optval, int optlen)
|
char *optval, int optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int opt;
|
int opt;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
|
|
if (optlen != sizeof(int))
|
if (optlen != sizeof(int))
|
goto out;
|
goto out;
|
|
|
ret = -EFAULT;
|
ret = -EFAULT;
|
if (get_user(opt, (unsigned int *)optval))
|
if (get_user(opt, (unsigned int *)optval))
|
goto out;
|
goto out;
|
|
|
ret = -ENOPROTOOPT;
|
ret = -ENOPROTOOPT;
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
goto out;
|
goto out;
|
|
|
sk->protinfo.af_ipx.type = opt;
|
sk->protinfo.af_ipx.type = opt;
|
ret = 0;
|
ret = 0;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_getsockopt(struct socket *sock, int level, int optname,
|
static int ipx_getsockopt(struct socket *sock, int level, int optname,
|
char *optval, int *optlen)
|
char *optval, int *optlen)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int val = 0;
|
int val = 0;
|
int len;
|
int len;
|
int ret = -ENOPROTOOPT;
|
int ret = -ENOPROTOOPT;
|
|
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
goto out;
|
goto out;
|
|
|
val = sk->protinfo.af_ipx.type;
|
val = sk->protinfo.af_ipx.type;
|
|
|
ret = -EFAULT;
|
ret = -EFAULT;
|
if (get_user(len, optlen))
|
if (get_user(len, optlen))
|
goto out;
|
goto out;
|
|
|
len = min_t(unsigned int, len, sizeof(int));
|
len = min_t(unsigned int, len, sizeof(int));
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if(len < 0)
|
if(len < 0)
|
goto out;
|
goto out;
|
|
|
ret = -EFAULT;
|
ret = -EFAULT;
|
if (put_user(len, optlen) || copy_to_user(optval, &val, len))
|
if (put_user(len, optlen) || copy_to_user(optval, &val, len))
|
goto out;
|
goto out;
|
|
|
ret = 0;
|
ret = 0;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_create(struct socket *sock, int protocol)
|
static int ipx_create(struct socket *sock, int protocol)
|
{
|
{
|
int ret = -ESOCKTNOSUPPORT;
|
int ret = -ESOCKTNOSUPPORT;
|
struct sock *sk;
|
struct sock *sk;
|
|
|
switch (sock->type) {
|
switch (sock->type) {
|
case SOCK_DGRAM:
|
case SOCK_DGRAM:
|
sk = sk_alloc(PF_IPX, GFP_KERNEL, 1);
|
sk = sk_alloc(PF_IPX, GFP_KERNEL, 1);
|
ret = -ENOMEM;
|
ret = -ENOMEM;
|
if (!sk)
|
if (!sk)
|
goto out;
|
goto out;
|
sock->ops = &ipx_dgram_ops;
|
sock->ops = &ipx_dgram_ops;
|
break;
|
break;
|
|
|
case SOCK_SEQPACKET:
|
case SOCK_SEQPACKET:
|
/*
|
/*
|
* From this point on SPX sockets are handled
|
* From this point on SPX sockets are handled
|
* by af_spx.c and the methods replaced.
|
* by af_spx.c and the methods replaced.
|
*/
|
*/
|
if (spx_family_ops) {
|
if (spx_family_ops) {
|
ret = spx_family_ops->create(sock, protocol);
|
ret = spx_family_ops->create(sock, protocol);
|
goto out;
|
goto out;
|
}
|
}
|
/* Fall through if SPX is not loaded */
|
/* Fall through if SPX is not loaded */
|
case SOCK_STREAM: /* Allow higher levels to piggyback */
|
case SOCK_STREAM: /* Allow higher levels to piggyback */
|
default:
|
default:
|
goto out;
|
goto out;
|
}
|
}
|
#ifdef IPX_REFCNT_DEBUG
|
#ifdef IPX_REFCNT_DEBUG
|
atomic_inc(&ipx_sock_nr);
|
atomic_inc(&ipx_sock_nr);
|
printk(KERN_DEBUG "IPX socket %p created, now we have %d alive\n", sk,
|
printk(KERN_DEBUG "IPX socket %p created, now we have %d alive\n", sk,
|
atomic_read(&ipx_sock_nr));
|
atomic_read(&ipx_sock_nr));
|
#endif
|
#endif
|
sock_init_data(sock, sk);
|
sock_init_data(sock, sk);
|
sk->destruct = NULL;
|
sk->destruct = NULL;
|
sk->no_check = 1; /* Checksum off by default */
|
sk->no_check = 1; /* Checksum off by default */
|
|
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
ret = 0;
|
ret = 0;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_release(struct socket *sock)
|
static int ipx_release(struct socket *sock)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
if (!sk)
|
if (!sk)
|
goto out;
|
goto out;
|
|
|
if (!sk->dead)
|
if (!sk->dead)
|
sk->state_change(sk);
|
sk->state_change(sk);
|
|
|
sk->dead = 1;
|
sk->dead = 1;
|
sock->sk = NULL;
|
sock->sk = NULL;
|
ipx_destroy_socket(sk);
|
ipx_destroy_socket(sk);
|
|
|
if (sock->type == SOCK_DGRAM)
|
if (sock->type == SOCK_DGRAM)
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
|
|
out: return 0;
|
out: return 0;
|
}
|
}
|
|
|
/* caller must hold a reference to intrfc */
|
/* caller must hold a reference to intrfc */
|
|
|
static unsigned short ipx_first_free_socketnum(ipx_interface *intrfc)
|
static unsigned short ipx_first_free_socketnum(ipx_interface *intrfc)
|
{
|
{
|
unsigned short socketNum = intrfc->if_sknum;
|
unsigned short socketNum = intrfc->if_sknum;
|
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
|
|
if (socketNum < IPX_MIN_EPHEMERAL_SOCKET)
|
if (socketNum < IPX_MIN_EPHEMERAL_SOCKET)
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
|
|
while (__ipxitf_find_socket(intrfc, ntohs(socketNum)))
|
while (__ipxitf_find_socket(intrfc, ntohs(socketNum)))
|
if (socketNum > IPX_MAX_EPHEMERAL_SOCKET)
|
if (socketNum > IPX_MAX_EPHEMERAL_SOCKET)
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
else
|
else
|
socketNum++;
|
socketNum++;
|
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
intrfc->if_sknum = socketNum;
|
intrfc->if_sknum = socketNum;
|
|
|
return ntohs(socketNum);
|
return ntohs(socketNum);
|
}
|
}
|
|
|
static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
struct sockaddr_ipx *addr = (struct sockaddr_ipx *)uaddr;
|
struct sockaddr_ipx *addr = (struct sockaddr_ipx *)uaddr;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
|
|
if (!sk->zapped || addr_len != sizeof(struct sockaddr_ipx))
|
if (!sk->zapped || addr_len != sizeof(struct sockaddr_ipx))
|
goto out;
|
goto out;
|
|
|
intrfc = ipxitf_find_using_net(addr->sipx_network);
|
intrfc = ipxitf_find_using_net(addr->sipx_network);
|
ret = -EADDRNOTAVAIL;
|
ret = -EADDRNOTAVAIL;
|
if (!intrfc)
|
if (!intrfc)
|
goto out;
|
goto out;
|
|
|
if (!addr->sipx_port) {
|
if (!addr->sipx_port) {
|
addr->sipx_port = ipx_first_free_socketnum(intrfc);
|
addr->sipx_port = ipx_first_free_socketnum(intrfc);
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if (!addr->sipx_port)
|
if (!addr->sipx_port)
|
goto out_put;
|
goto out_put;
|
}
|
}
|
|
|
/* protect IPX system stuff like routing/sap */
|
/* protect IPX system stuff like routing/sap */
|
ret = -EACCES;
|
ret = -EACCES;
|
if (ntohs(addr->sipx_port) < IPX_MIN_EPHEMERAL_SOCKET &&
|
if (ntohs(addr->sipx_port) < IPX_MIN_EPHEMERAL_SOCKET &&
|
!capable(CAP_NET_ADMIN))
|
!capable(CAP_NET_ADMIN))
|
goto out_put;
|
goto out_put;
|
|
|
sk->protinfo.af_ipx.port = addr->sipx_port;
|
sk->protinfo.af_ipx.port = addr->sipx_port;
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
if (intrfc == ipx_internal_net) {
|
if (intrfc == ipx_internal_net) {
|
/* The source address is to be set explicitly if the
|
/* The source address is to be set explicitly if the
|
* socket is to be bound on the internal network. If a
|
* socket is to be bound on the internal network. If a
|
* node number 0 was specified, the default is used.
|
* node number 0 was specified, the default is used.
|
*/
|
*/
|
|
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if (!memcmp(addr->sipx_node, ipx_broadcast_node, IPX_NODE_LEN))
|
if (!memcmp(addr->sipx_node, ipx_broadcast_node, IPX_NODE_LEN))
|
goto out_put;
|
goto out_put;
|
if (!memcmp(addr->sipx_node, ipx_this_node, IPX_NODE_LEN))
|
if (!memcmp(addr->sipx_node, ipx_this_node, IPX_NODE_LEN))
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
else
|
else
|
memcpy(sk->protinfo.af_ipx.node, addr->sipx_node,
|
memcpy(sk->protinfo.af_ipx.node, addr->sipx_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
|
|
ret = -EADDRINUSE;
|
ret = -EADDRINUSE;
|
if (ipxitf_find_internal_socket(intrfc,
|
if (ipxitf_find_internal_socket(intrfc,
|
sk->protinfo.af_ipx.node,
|
sk->protinfo.af_ipx.node,
|
sk->protinfo.af_ipx.port)) {
|
sk->protinfo.af_ipx.port)) {
|
SOCK_DEBUG(sk,
|
SOCK_DEBUG(sk,
|
"IPX: bind failed because port %X in use.\n",
|
"IPX: bind failed because port %X in use.\n",
|
ntohs((int)addr->sipx_port));
|
ntohs((int)addr->sipx_port));
|
goto out_put;
|
goto out_put;
|
}
|
}
|
} else {
|
} else {
|
/* Source addresses are easy. It must be our
|
/* Source addresses are easy. It must be our
|
* network:node pair for an interface routed to IPX
|
* network:node pair for an interface routed to IPX
|
* with the ipx routing ioctl()
|
* with the ipx routing ioctl()
|
*/
|
*/
|
|
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
|
|
ret = -EADDRINUSE;
|
ret = -EADDRINUSE;
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
SOCK_DEBUG(sk,
|
SOCK_DEBUG(sk,
|
"IPX: bind failed because port %X in use.\n",
|
"IPX: bind failed because port %X in use.\n",
|
ntohs((int)addr->sipx_port));
|
ntohs((int)addr->sipx_port));
|
goto out_put;
|
goto out_put;
|
}
|
}
|
}
|
}
|
|
|
#else /* !def CONFIG_IPX_INTERN */
|
#else /* !def CONFIG_IPX_INTERN */
|
|
|
/* Source addresses are easy. It must be our network:node pair for
|
/* Source addresses are easy. It must be our network:node pair for
|
an interface routed to IPX with the ipx routing ioctl() */
|
an interface routed to IPX with the ipx routing ioctl() */
|
|
|
ret = -EADDRINUSE;
|
ret = -EADDRINUSE;
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
SOCK_DEBUG(sk, "IPX: bind failed because port %X in use.\n",
|
SOCK_DEBUG(sk, "IPX: bind failed because port %X in use.\n",
|
ntohs((int)addr->sipx_port));
|
ntohs((int)addr->sipx_port));
|
goto out_put;
|
goto out_put;
|
}
|
}
|
|
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
|
|
ipxitf_insert_socket(intrfc, sk);
|
ipxitf_insert_socket(intrfc, sk);
|
sk->zapped = 0;
|
sk->zapped = 0;
|
SOCK_DEBUG(sk, "IPX: bound socket 0x%04X.\n", ntohs(addr->sipx_port) );
|
SOCK_DEBUG(sk, "IPX: bound socket 0x%04X.\n", ntohs(addr->sipx_port) );
|
|
|
ret = 0;
|
ret = 0;
|
out_put:
|
out_put:
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_connect(struct socket *sock, struct sockaddr *uaddr,
|
static int ipx_connect(struct socket *sock, struct sockaddr *uaddr,
|
int addr_len, int flags)
|
int addr_len, int flags)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ipx *addr;
|
struct sockaddr_ipx *addr;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
ipx_route *rt;
|
ipx_route *rt;
|
|
|
sk->state = TCP_CLOSE;
|
sk->state = TCP_CLOSE;
|
sock->state = SS_UNCONNECTED;
|
sock->state = SS_UNCONNECTED;
|
|
|
if (addr_len != sizeof(*addr))
|
if (addr_len != sizeof(*addr))
|
goto out;
|
goto out;
|
addr = (struct sockaddr_ipx *)uaddr;
|
addr = (struct sockaddr_ipx *)uaddr;
|
|
|
/* put the autobinding in */
|
/* put the autobinding in */
|
if (!sk->protinfo.af_ipx.port) {
|
if (!sk->protinfo.af_ipx.port) {
|
struct sockaddr_ipx uaddr;
|
struct sockaddr_ipx uaddr;
|
|
|
uaddr.sipx_port = 0;
|
uaddr.sipx_port = 0;
|
uaddr.sipx_network = 0;
|
uaddr.sipx_network = 0;
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
ret = -ENETDOWN;
|
ret = -ENETDOWN;
|
if (!sk->protinfo.af_ipx.intrfc)
|
if (!sk->protinfo.af_ipx.intrfc)
|
goto out; /* Someone zonked the iface */
|
goto out; /* Someone zonked the iface */
|
memcpy(uaddr.sipx_node, sk->protinfo.af_ipx.intrfc->if_node,
|
memcpy(uaddr.sipx_node, sk->protinfo.af_ipx.intrfc->if_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
|
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
sizeof(struct sockaddr_ipx));
|
sizeof(struct sockaddr_ipx));
|
if (ret)
|
if (ret)
|
goto out;
|
goto out;
|
}
|
}
|
|
|
/* We can either connect to primary network or somewhere
|
/* We can either connect to primary network or somewhere
|
* we can route to */
|
* we can route to */
|
rt = ipxrtr_lookup(addr->sipx_network);
|
rt = ipxrtr_lookup(addr->sipx_network);
|
ret = -ENETUNREACH;
|
ret = -ENETUNREACH;
|
if (!rt && !(!addr->sipx_network && ipx_primary_net))
|
if (!rt && !(!addr->sipx_network && ipx_primary_net))
|
goto out;
|
goto out;
|
|
|
sk->protinfo.af_ipx.dest_addr.net = addr->sipx_network;
|
sk->protinfo.af_ipx.dest_addr.net = addr->sipx_network;
|
sk->protinfo.af_ipx.dest_addr.sock = addr->sipx_port;
|
sk->protinfo.af_ipx.dest_addr.sock = addr->sipx_port;
|
memcpy(sk->protinfo.af_ipx.dest_addr.node,
|
memcpy(sk->protinfo.af_ipx.dest_addr.node,
|
addr->sipx_node, IPX_NODE_LEN);
|
addr->sipx_node, IPX_NODE_LEN);
|
sk->protinfo.af_ipx.type = addr->sipx_type;
|
sk->protinfo.af_ipx.type = addr->sipx_type;
|
|
|
if (sock->type == SOCK_DGRAM) {
|
if (sock->type == SOCK_DGRAM) {
|
sock->state = SS_CONNECTED;
|
sock->state = SS_CONNECTED;
|
sk->state = TCP_ESTABLISHED;
|
sk->state = TCP_ESTABLISHED;
|
}
|
}
|
|
|
if (rt)
|
if (rt)
|
ipxrtr_put(rt);
|
ipxrtr_put(rt);
|
ret = 0;
|
ret = 0;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
|
|
static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
|
static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
|
int *uaddr_len, int peer)
|
int *uaddr_len, int peer)
|
{
|
{
|
ipx_address *addr;
|
ipx_address *addr;
|
struct sockaddr_ipx sipx;
|
struct sockaddr_ipx sipx;
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
int ret;
|
int ret;
|
|
|
*uaddr_len = sizeof(struct sockaddr_ipx);
|
*uaddr_len = sizeof(struct sockaddr_ipx);
|
|
|
if (peer) {
|
if (peer) {
|
ret = -ENOTCONN;
|
ret = -ENOTCONN;
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
goto out;
|
goto out;
|
|
|
addr = &sk->protinfo.af_ipx.dest_addr;
|
addr = &sk->protinfo.af_ipx.dest_addr;
|
sipx.sipx_network = addr->net;
|
sipx.sipx_network = addr->net;
|
sipx.sipx_port = addr->sock;
|
sipx.sipx_port = addr->sock;
|
memcpy(sipx.sipx_node, addr->node, IPX_NODE_LEN);
|
memcpy(sipx.sipx_node, addr->node, IPX_NODE_LEN);
|
} else {
|
} else {
|
if (sk->protinfo.af_ipx.intrfc) {
|
if (sk->protinfo.af_ipx.intrfc) {
|
sipx.sipx_network =
|
sipx.sipx_network =
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
memcpy(sipx.sipx_node, sk->protinfo.af_ipx.node,
|
memcpy(sipx.sipx_node, sk->protinfo.af_ipx.node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
#else
|
#else
|
memcpy(sipx.sipx_node,
|
memcpy(sipx.sipx_node,
|
sk->protinfo.af_ipx.intrfc->if_node,
|
sk->protinfo.af_ipx.intrfc->if_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
|
|
} else {
|
} else {
|
sipx.sipx_network = 0;
|
sipx.sipx_network = 0;
|
memset(sipx.sipx_node, '\0', IPX_NODE_LEN);
|
memset(sipx.sipx_node, '\0', IPX_NODE_LEN);
|
}
|
}
|
|
|
sipx.sipx_port = sk->protinfo.af_ipx.port;
|
sipx.sipx_port = sk->protinfo.af_ipx.port;
|
}
|
}
|
|
|
sipx.sipx_family = AF_IPX;
|
sipx.sipx_family = AF_IPX;
|
sipx.sipx_type = sk->protinfo.af_ipx.type;
|
sipx.sipx_type = sk->protinfo.af_ipx.type;
|
memcpy(uaddr, &sipx, sizeof(sipx));
|
memcpy(uaddr, &sipx, sizeof(sipx));
|
|
|
ret = 0;
|
ret = 0;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt)
|
int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt)
|
{
|
{
|
/* NULL here for pt means the packet was looped back */
|
/* NULL here for pt means the packet was looped back */
|
ipx_interface *intrfc;
|
ipx_interface *intrfc;
|
struct ipxhdr *ipx;
|
struct ipxhdr *ipx;
|
u16 ipx_pktsize;
|
u16 ipx_pktsize;
|
int ret = 0;
|
int ret = 0;
|
|
|
/* Not ours */
|
/* Not ours */
|
if (skb->pkt_type == PACKET_OTHERHOST)
|
if (skb->pkt_type == PACKET_OTHERHOST)
|
goto drop;
|
goto drop;
|
|
|
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
|
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
|
goto out;
|
goto out;
|
|
|
ipx = skb->nh.ipxh;
|
ipx = skb->nh.ipxh;
|
ipx_pktsize = ntohs(ipx->ipx_pktsize);
|
ipx_pktsize = ntohs(ipx->ipx_pktsize);
|
|
|
/* Too small or invalid header? */
|
/* Too small or invalid header? */
|
if (ipx_pktsize < sizeof(struct ipxhdr) || ipx_pktsize > skb->len)
|
if (ipx_pktsize < sizeof(struct ipxhdr) || ipx_pktsize > skb->len)
|
goto drop;
|
goto drop;
|
|
|
if (ipx->ipx_checksum != IPX_NO_CHECKSUM &&
|
if (ipx->ipx_checksum != IPX_NO_CHECKSUM &&
|
ipx->ipx_checksum != ipx_cksum(ipx, ipx_pktsize))
|
ipx->ipx_checksum != ipx_cksum(ipx, ipx_pktsize))
|
goto drop;
|
goto drop;
|
|
|
IPX_SKB_CB(skb)->ipx_tctrl = ipx->ipx_tctrl;
|
IPX_SKB_CB(skb)->ipx_tctrl = ipx->ipx_tctrl;
|
IPX_SKB_CB(skb)->ipx_dest_net = ipx->ipx_dest.net;
|
IPX_SKB_CB(skb)->ipx_dest_net = ipx->ipx_dest.net;
|
IPX_SKB_CB(skb)->ipx_source_net = ipx->ipx_source.net;
|
IPX_SKB_CB(skb)->ipx_source_net = ipx->ipx_source.net;
|
|
|
/* Determine what local ipx endpoint this is */
|
/* Determine what local ipx endpoint this is */
|
intrfc = ipxitf_find_using_phys(dev, pt->type);
|
intrfc = ipxitf_find_using_phys(dev, pt->type);
|
if (!intrfc) {
|
if (!intrfc) {
|
if (ipxcfg_auto_create_interfaces &&
|
if (ipxcfg_auto_create_interfaces &&
|
ntohl(IPX_SKB_CB(skb)->ipx_dest_net)) {
|
ntohl(IPX_SKB_CB(skb)->ipx_dest_net)) {
|
intrfc = ipxitf_auto_create(dev, pt->type);
|
intrfc = ipxitf_auto_create(dev, pt->type);
|
if (intrfc)
|
if (intrfc)
|
ipxitf_hold(intrfc);
|
ipxitf_hold(intrfc);
|
}
|
}
|
|
|
if (!intrfc) /* Not one of ours */
|
if (!intrfc) /* Not one of ours */
|
/* or invalid packet for auto creation */
|
/* or invalid packet for auto creation */
|
goto drop;
|
goto drop;
|
}
|
}
|
|
|
ret = ipxitf_rcv(intrfc, skb);
|
ret = ipxitf_rcv(intrfc, skb);
|
ipxitf_put(intrfc);
|
ipxitf_put(intrfc);
|
goto out;
|
goto out;
|
drop: kfree_skb(skb);
|
drop: kfree_skb(skb);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
static int ipx_sendmsg(struct socket *sock, struct msghdr *msg, int len,
|
static int ipx_sendmsg(struct socket *sock, struct msghdr *msg, int len,
|
struct scm_cookie *scm)
|
struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ipx *usipx = (struct sockaddr_ipx *)msg->msg_name;
|
struct sockaddr_ipx *usipx = (struct sockaddr_ipx *)msg->msg_name;
|
struct sockaddr_ipx local_sipx;
|
struct sockaddr_ipx local_sipx;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
int flags = msg->msg_flags;
|
int flags = msg->msg_flags;
|
|
|
/* Socket gets bound below anyway */
|
/* Socket gets bound below anyway */
|
/* if (sk->zapped)
|
/* if (sk->zapped)
|
return -EIO; */ /* Socket not bound */
|
return -EIO; */ /* Socket not bound */
|
if (flags & ~MSG_DONTWAIT)
|
if (flags & ~MSG_DONTWAIT)
|
goto out;
|
goto out;
|
|
|
if (usipx) {
|
if (usipx) {
|
if (!sk->protinfo.af_ipx.port) {
|
if (!sk->protinfo.af_ipx.port) {
|
struct sockaddr_ipx uaddr;
|
struct sockaddr_ipx uaddr;
|
|
|
uaddr.sipx_port = 0;
|
uaddr.sipx_port = 0;
|
uaddr.sipx_network = 0;
|
uaddr.sipx_network = 0;
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
ret = -ENETDOWN;
|
ret = -ENETDOWN;
|
if (!sk->protinfo.af_ipx.intrfc)
|
if (!sk->protinfo.af_ipx.intrfc)
|
goto out; /* Someone zonked the iface */
|
goto out; /* Someone zonked the iface */
|
memcpy(uaddr.sipx_node,
|
memcpy(uaddr.sipx_node,
|
sk->protinfo.af_ipx.intrfc->if_node,
|
sk->protinfo.af_ipx.intrfc->if_node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
#endif
|
#endif
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
sizeof(struct sockaddr_ipx));
|
sizeof(struct sockaddr_ipx));
|
if (ret)
|
if (ret)
|
goto out;
|
goto out;
|
}
|
}
|
|
|
ret = -EINVAL;
|
ret = -EINVAL;
|
if (msg->msg_namelen < sizeof(*usipx) ||
|
if (msg->msg_namelen < sizeof(*usipx) ||
|
usipx->sipx_family != AF_IPX)
|
usipx->sipx_family != AF_IPX)
|
goto out;
|
goto out;
|
} else {
|
} else {
|
ret = -ENOTCONN;
|
ret = -ENOTCONN;
|
if (sk->state != TCP_ESTABLISHED)
|
if (sk->state != TCP_ESTABLISHED)
|
goto out;
|
goto out;
|
|
|
usipx = &local_sipx;
|
usipx = &local_sipx;
|
usipx->sipx_family = AF_IPX;
|
usipx->sipx_family = AF_IPX;
|
usipx->sipx_type = sk->protinfo.af_ipx.type;
|
usipx->sipx_type = sk->protinfo.af_ipx.type;
|
usipx->sipx_port = sk->protinfo.af_ipx.dest_addr.sock;
|
usipx->sipx_port = sk->protinfo.af_ipx.dest_addr.sock;
|
usipx->sipx_network = sk->protinfo.af_ipx.dest_addr.net;
|
usipx->sipx_network = sk->protinfo.af_ipx.dest_addr.net;
|
memcpy(usipx->sipx_node, sk->protinfo.af_ipx.dest_addr.node,
|
memcpy(usipx->sipx_node, sk->protinfo.af_ipx.dest_addr.node,
|
IPX_NODE_LEN);
|
IPX_NODE_LEN);
|
}
|
}
|
|
|
ret = ipxrtr_route_packet(sk, usipx, msg->msg_iov, len,
|
ret = ipxrtr_route_packet(sk, usipx, msg->msg_iov, len,
|
flags & MSG_DONTWAIT);
|
flags & MSG_DONTWAIT);
|
if (ret >= 0)
|
if (ret >= 0)
|
ret = len;
|
ret = len;
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
|
|
static int ipx_recvmsg(struct socket *sock, struct msghdr *msg, int size,
|
static int ipx_recvmsg(struct socket *sock, struct msghdr *msg, int size,
|
int flags, struct scm_cookie *scm)
|
int flags, struct scm_cookie *scm)
|
{
|
{
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)msg->msg_name;
|
struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)msg->msg_name;
|
struct ipxhdr *ipx = NULL;
|
struct ipxhdr *ipx = NULL;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
int copied, err;
|
int copied, err;
|
|
|
/* put the autobinding in */
|
/* put the autobinding in */
|
if (!sk->protinfo.af_ipx.port) {
|
if (!sk->protinfo.af_ipx.port) {
|
struct sockaddr_ipx uaddr;
|
struct sockaddr_ipx uaddr;
|
|
|
uaddr.sipx_port = 0;
|
uaddr.sipx_port = 0;
|
uaddr.sipx_network = 0;
|
uaddr.sipx_network = 0;
|
|
|
#ifdef CONFIG_IPX_INTERN
|
#ifdef CONFIG_IPX_INTERN
|
err = -ENETDOWN;
|
err = -ENETDOWN;
|
if (!sk->protinfo.af_ipx.intrfc)
|
if (!sk->protinfo.af_ipx.intrfc)
|
goto out; /* Someone zonked the iface */
|
goto out; /* Someone zonked the iface */
|
memcpy(uaddr.sipx_node,
|
memcpy(uaddr.sipx_node,
|
sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
#endif /* CONFIG_IPX_INTERN */
|
#endif /* CONFIG_IPX_INTERN */
|
|
|
err = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
err = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
sizeof(struct sockaddr_ipx));
|
sizeof(struct sockaddr_ipx));
|
if (err)
|
if (err)
|
goto out;
|
goto out;
|
}
|
}
|
|
|
err = -ENOTCONN;
|
err = -ENOTCONN;
|
if (sk->zapped)
|
if (sk->zapped)
|
goto out;
|
goto out;
|
|
|
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
|
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
|
flags & MSG_DONTWAIT, &err);
|
flags & MSG_DONTWAIT, &err);
|
if (!skb)
|
if (!skb)
|
goto out;
|
goto out;
|
|
|
ipx = skb->nh.ipxh;
|
ipx = skb->nh.ipxh;
|
copied = ntohs(ipx->ipx_pktsize) - sizeof(struct ipxhdr);
|
copied = ntohs(ipx->ipx_pktsize) - sizeof(struct ipxhdr);
|
if (copied > size) {
|
if (copied > size) {
|
copied = size;
|
copied = size;
|
msg->msg_flags |= MSG_TRUNC;
|
msg->msg_flags |= MSG_TRUNC;
|
}
|
}
|
|
|
err = skb_copy_datagram_iovec(skb, sizeof(struct ipxhdr), msg->msg_iov,
|
err = skb_copy_datagram_iovec(skb, sizeof(struct ipxhdr), msg->msg_iov,
|
copied);
|
copied);
|
if (err)
|
if (err)
|
goto out_free;
|
goto out_free;
|
sk->stamp = skb->stamp;
|
sk->stamp = skb->stamp;
|
|
|
msg->msg_namelen = sizeof(*sipx);
|
msg->msg_namelen = sizeof(*sipx);
|
|
|
if (sipx) {
|
if (sipx) {
|
sipx->sipx_family = AF_IPX;
|
sipx->sipx_family = AF_IPX;
|
sipx->sipx_port = ipx->ipx_source.sock;
|
sipx->sipx_port = ipx->ipx_source.sock;
|
memcpy(sipx->sipx_node, ipx->ipx_source.node, IPX_NODE_LEN);
|
memcpy(sipx->sipx_node, ipx->ipx_source.node, IPX_NODE_LEN);
|
sipx->sipx_network = IPX_SKB_CB(skb)->ipx_source_net;
|
sipx->sipx_network = IPX_SKB_CB(skb)->ipx_source_net;
|
sipx->sipx_type = ipx->ipx_type;
|
sipx->sipx_type = ipx->ipx_type;
|
}
|
}
|
err = copied;
|
err = copied;
|
|
|
out_free:
|
out_free:
|
skb_free_datagram(sk, skb);
|
skb_free_datagram(sk, skb);
|
out: return err;
|
out: return err;
|
}
|
}
|
|
|
|
|
static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
{
|
{
|
long amount = 0;
|
long amount = 0;
|
struct sock *sk = sock->sk;
|
struct sock *sk = sock->sk;
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case TIOCOUTQ:
|
case TIOCOUTQ:
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
if (amount < 0)
|
if (amount < 0)
|
amount = 0;
|
amount = 0;
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
|
|
case TIOCINQ: {
|
case TIOCINQ: {
|
struct sk_buff *skb = skb_peek(&sk->receive_queue);
|
struct sk_buff *skb = skb_peek(&sk->receive_queue);
|
/* These two are safe on a single CPU system as only
|
/* These two are safe on a single CPU system as only
|
* user tasks fiddle here */
|
* user tasks fiddle here */
|
if (skb)
|
if (skb)
|
amount = skb->len - sizeof(struct ipxhdr);
|
amount = skb->len - sizeof(struct ipxhdr);
|
return put_user(amount, (int *)arg);
|
return put_user(amount, (int *)arg);
|
}
|
}
|
|
|
case SIOCADDRT:
|
case SIOCADDRT:
|
case SIOCDELRT:
|
case SIOCDELRT:
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
return ipxrtr_ioctl(cmd, (void *)arg);
|
return ipxrtr_ioctl(cmd, (void *)arg);
|
|
|
case SIOCSIFADDR:
|
case SIOCSIFADDR:
|
case SIOCAIPXITFCRT:
|
case SIOCAIPXITFCRT:
|
case SIOCAIPXPRISLT:
|
case SIOCAIPXPRISLT:
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
|
|
case SIOCGIFADDR:
|
case SIOCGIFADDR:
|
return ipxitf_ioctl(cmd, (void *)arg);
|
return ipxitf_ioctl(cmd, (void *)arg);
|
|
|
case SIOCIPXCFGDATA:
|
case SIOCIPXCFGDATA:
|
return ipxcfg_get_config_data((void *)arg);
|
return ipxcfg_get_config_data((void *)arg);
|
|
|
case SIOCIPXNCPCONN:
|
case SIOCIPXNCPCONN:
|
/*
|
/*
|
* This socket wants to take care of the NCP connection
|
* This socket wants to take care of the NCP connection
|
* handed to us in arg.
|
* handed to us in arg.
|
*/
|
*/
|
if (!capable(CAP_NET_ADMIN))
|
if (!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
return -EPERM;
|
return get_user(sk->protinfo.af_ipx.ipx_ncp_conn,
|
return get_user(sk->protinfo.af_ipx.ipx_ncp_conn,
|
(const unsigned short *)(arg));
|
(const unsigned short *)(arg));
|
|
|
case SIOCGSTAMP: {
|
case SIOCGSTAMP: {
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
if (sk) {
|
if (sk) {
|
if (!sk->stamp.tv_sec)
|
if (!sk->stamp.tv_sec)
|
return -ENOENT;
|
return -ENOENT;
|
ret = -EFAULT;
|
ret = -EFAULT;
|
if (!copy_to_user((void *)arg, &sk->stamp,
|
if (!copy_to_user((void *)arg, &sk->stamp,
|
sizeof(struct timeval)))
|
sizeof(struct timeval)))
|
ret = 0;
|
ret = 0;
|
}
|
}
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
case SIOCGIFDSTADDR:
|
case SIOCGIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCSIFDSTADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCGIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCSIFBRDADDR:
|
case SIOCGIFNETMASK:
|
case SIOCGIFNETMASK:
|
case SIOCSIFNETMASK:
|
case SIOCSIFNETMASK:
|
return -EINVAL;
|
return -EINVAL;
|
|
|
default:
|
default:
|
return dev_ioctl(cmd,(void *) arg);
|
return dev_ioctl(cmd,(void *) arg);
|
}
|
}
|
|
|
/*NOT REACHED*/
|
/*NOT REACHED*/
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* SPX interface support
|
* SPX interface support
|
*/
|
*/
|
|
|
int ipx_register_spx(struct proto_ops **p, struct net_proto_family *spx)
|
int ipx_register_spx(struct proto_ops **p, struct net_proto_family *spx)
|
{
|
{
|
if (spx_family_ops)
|
if (spx_family_ops)
|
return -EBUSY;
|
return -EBUSY;
|
cli();
|
cli();
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
*p = &ipx_dgram_ops;
|
*p = &ipx_dgram_ops;
|
spx_family_ops = spx;
|
spx_family_ops = spx;
|
sti();
|
sti();
|
return 0;
|
return 0;
|
}
|
}
|
|
|
int ipx_unregister_spx(void)
|
int ipx_unregister_spx(void)
|
{
|
{
|
spx_family_ops = NULL;
|
spx_family_ops = NULL;
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Socket family declarations
|
* Socket family declarations
|
*/
|
*/
|
|
|
static struct net_proto_family ipx_family_ops = {
|
static struct net_proto_family ipx_family_ops = {
|
family: PF_IPX,
|
family: PF_IPX,
|
create: ipx_create,
|
create: ipx_create,
|
};
|
};
|
|
|
static struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
|
static struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
|
family: PF_IPX,
|
family: PF_IPX,
|
|
|
release: ipx_release,
|
release: ipx_release,
|
bind: ipx_bind,
|
bind: ipx_bind,
|
connect: ipx_connect,
|
connect: ipx_connect,
|
socketpair: sock_no_socketpair,
|
socketpair: sock_no_socketpair,
|
accept: sock_no_accept,
|
accept: sock_no_accept,
|
getname: ipx_getname,
|
getname: ipx_getname,
|
poll: datagram_poll,
|
poll: datagram_poll,
|
ioctl: ipx_ioctl,
|
ioctl: ipx_ioctl,
|
listen: sock_no_listen,
|
listen: sock_no_listen,
|
shutdown: sock_no_shutdown, /* FIXME: have to support shutdown */
|
shutdown: sock_no_shutdown, /* FIXME: have to support shutdown */
|
setsockopt: ipx_setsockopt,
|
setsockopt: ipx_setsockopt,
|
getsockopt: ipx_getsockopt,
|
getsockopt: ipx_getsockopt,
|
sendmsg: ipx_sendmsg,
|
sendmsg: ipx_sendmsg,
|
recvmsg: ipx_recvmsg,
|
recvmsg: ipx_recvmsg,
|
mmap: sock_no_mmap,
|
mmap: sock_no_mmap,
|
sendpage: sock_no_sendpage,
|
sendpage: sock_no_sendpage,
|
};
|
};
|
|
|
#include <linux/smp_lock.h>
|
#include <linux/smp_lock.h>
|
SOCKOPS_WRAP(ipx_dgram, PF_IPX);
|
SOCKOPS_WRAP(ipx_dgram, PF_IPX);
|
|
|
static struct packet_type ipx_8023_packet_type = {
|
static struct packet_type ipx_8023_packet_type = {
|
type: __constant_htons(ETH_P_802_3),
|
type: __constant_htons(ETH_P_802_3),
|
func: ipx_rcv,
|
func: ipx_rcv,
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
};
|
};
|
|
|
static struct packet_type ipx_dix_packet_type = {
|
static struct packet_type ipx_dix_packet_type = {
|
type: __constant_htons(ETH_P_IPX),
|
type: __constant_htons(ETH_P_IPX),
|
func: ipx_rcv,
|
func: ipx_rcv,
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
};
|
};
|
|
|
static struct notifier_block ipx_dev_notifier = {
|
static struct notifier_block ipx_dev_notifier = {
|
notifier_call: ipxitf_device_event,
|
notifier_call: ipxitf_device_event,
|
};
|
};
|
|
|
|
|
extern struct datalink_proto *make_EII_client(void);
|
extern struct datalink_proto *make_EII_client(void);
|
extern struct datalink_proto *make_8023_client(void);
|
extern struct datalink_proto *make_8023_client(void);
|
extern void destroy_EII_client(struct datalink_proto *);
|
extern void destroy_EII_client(struct datalink_proto *);
|
extern void destroy_8023_client(struct datalink_proto *);
|
extern void destroy_8023_client(struct datalink_proto *);
|
|
|
static unsigned char ipx_8022_type = 0xE0;
|
static unsigned char ipx_8022_type = 0xE0;
|
static unsigned char ipx_snap_id[5] = { 0x0, 0x0, 0x0, 0x81, 0x37 };
|
static unsigned char ipx_snap_id[5] = { 0x0, 0x0, 0x0, 0x81, 0x37 };
|
static char banner[] __initdata =
|
static char banner[] __initdata =
|
KERN_INFO "NET4: Linux IPX 0.47 for NET4.0\n"
|
KERN_INFO "NET4: Linux IPX 0.47 for NET4.0\n"
|
KERN_INFO "IPX Portions Copyright (c) 1995 Caldera, Inc.\n" \
|
KERN_INFO "IPX Portions Copyright (c) 1995 Caldera, Inc.\n" \
|
KERN_INFO "IPX Portions Copyright (c) 2000, 2001 Conectiva, Inc.\n";
|
KERN_INFO "IPX Portions Copyright (c) 2000, 2001 Conectiva, Inc.\n";
|
|
|
static int __init ipx_init(void)
|
static int __init ipx_init(void)
|
{
|
{
|
sock_register(&ipx_family_ops);
|
sock_register(&ipx_family_ops);
|
|
|
pEII_datalink = make_EII_client();
|
pEII_datalink = make_EII_client();
|
dev_add_pack(&ipx_dix_packet_type);
|
dev_add_pack(&ipx_dix_packet_type);
|
|
|
p8023_datalink = make_8023_client();
|
p8023_datalink = make_8023_client();
|
dev_add_pack(&ipx_8023_packet_type);
|
dev_add_pack(&ipx_8023_packet_type);
|
|
|
p8022_datalink = register_8022_client(ipx_8022_type, ipx_rcv);
|
p8022_datalink = register_8022_client(ipx_8022_type, ipx_rcv);
|
if (!p8022_datalink)
|
if (!p8022_datalink)
|
printk(KERN_CRIT "IPX: Unable to register with 802.2\n");
|
printk(KERN_CRIT "IPX: Unable to register with 802.2\n");
|
|
|
pSNAP_datalink = register_snap_client(ipx_snap_id, ipx_rcv);
|
pSNAP_datalink = register_snap_client(ipx_snap_id, ipx_rcv);
|
if (!pSNAP_datalink)
|
if (!pSNAP_datalink)
|
printk(KERN_CRIT "IPX: Unable to register with SNAP\n");
|
printk(KERN_CRIT "IPX: Unable to register with SNAP\n");
|
|
|
register_netdevice_notifier(&ipx_dev_notifier);
|
register_netdevice_notifier(&ipx_dev_notifier);
|
ipx_register_sysctl();
|
ipx_register_sysctl();
|
#ifdef CONFIG_PROC_FS
|
#ifdef CONFIG_PROC_FS
|
proc_net_create("ipx", 0, ipx_get_info);
|
proc_net_create("ipx", 0, ipx_get_info);
|
proc_net_create("ipx_interface", 0, ipx_interface_get_info);
|
proc_net_create("ipx_interface", 0, ipx_interface_get_info);
|
proc_net_create("ipx_route", 0, ipx_rt_get_info);
|
proc_net_create("ipx_route", 0, ipx_rt_get_info);
|
#endif
|
#endif
|
printk(banner);
|
printk(banner);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
module_init(ipx_init);
|
module_init(ipx_init);
|
|
|
/* Higher layers need this info to prep tx pkts */
|
/* Higher layers need this info to prep tx pkts */
|
int ipx_if_offset(unsigned long ipx_net_number)
|
int ipx_if_offset(unsigned long ipx_net_number)
|
{
|
{
|
ipx_route *rt = ipxrtr_lookup(ipx_net_number);
|
ipx_route *rt = ipxrtr_lookup(ipx_net_number);
|
int ret = -ENETUNREACH;
|
int ret = -ENETUNREACH;
|
|
|
if (!rt)
|
if (!rt)
|
goto out;
|
goto out;
|
ret = rt->ir_intrfc->if_ipx_offset;
|
ret = rt->ir_intrfc->if_ipx_offset;
|
ipxrtr_put(rt);
|
ipxrtr_put(rt);
|
out: return ret;
|
out: return ret;
|
}
|
}
|
|
|
/* Export symbols for higher layers */
|
/* Export symbols for higher layers */
|
EXPORT_SYMBOL(ipxrtr_route_skb);
|
EXPORT_SYMBOL(ipxrtr_route_skb);
|
EXPORT_SYMBOL(ipx_if_offset);
|
EXPORT_SYMBOL(ipx_if_offset);
|
EXPORT_SYMBOL(ipx_remove_socket);
|
EXPORT_SYMBOL(ipx_remove_socket);
|
EXPORT_SYMBOL(ipx_register_spx);
|
EXPORT_SYMBOL(ipx_register_spx);
|
EXPORT_SYMBOL(ipx_unregister_spx);
|
EXPORT_SYMBOL(ipx_unregister_spx);
|
|
|
/* Note on MOD_{INC,DEC}_USE_COUNT:
|
/* Note on MOD_{INC,DEC}_USE_COUNT:
|
*
|
*
|
* Use counts are incremented/decremented when
|
* Use counts are incremented/decremented when
|
* sockets are created/deleted.
|
* sockets are created/deleted.
|
*
|
*
|
* Routes are always associated with an interface, and
|
* Routes are always associated with an interface, and
|
* allocs/frees will remain properly accounted for by
|
* allocs/frees will remain properly accounted for by
|
* their associated interfaces.
|
* their associated interfaces.
|
*
|
*
|
* Ergo, before the ipx module can be removed, all IPX
|
* Ergo, before the ipx module can be removed, all IPX
|
* sockets be closed from user space.
|
* sockets be closed from user space.
|
*/
|
*/
|
|
|
static void __exit ipx_proto_finito(void)
|
static void __exit ipx_proto_finito(void)
|
{
|
{
|
/* no need to worry about having anything on the ipx_interfaces
|
/* no need to worry about having anything on the ipx_interfaces
|
* list, when a interface is created we increment the module
|
* list, when a interface is created we increment the module
|
* usage count, so the module will only be unloaded when there
|
* usage count, so the module will only be unloaded when there
|
* are no more interfaces */
|
* are no more interfaces */
|
|
|
proc_net_remove("ipx_route");
|
proc_net_remove("ipx_route");
|
proc_net_remove("ipx_interface");
|
proc_net_remove("ipx_interface");
|
proc_net_remove("ipx");
|
proc_net_remove("ipx");
|
ipx_unregister_sysctl();
|
ipx_unregister_sysctl();
|
|
|
unregister_netdevice_notifier(&ipx_dev_notifier);
|
unregister_netdevice_notifier(&ipx_dev_notifier);
|
|
|
unregister_snap_client(ipx_snap_id);
|
unregister_snap_client(ipx_snap_id);
|
pSNAP_datalink = NULL;
|
pSNAP_datalink = NULL;
|
|
|
unregister_8022_client(ipx_8022_type);
|
unregister_8022_client(ipx_8022_type);
|
p8022_datalink = NULL;
|
p8022_datalink = NULL;
|
|
|
dev_remove_pack(&ipx_8023_packet_type);
|
dev_remove_pack(&ipx_8023_packet_type);
|
destroy_8023_client(p8023_datalink);
|
destroy_8023_client(p8023_datalink);
|
p8023_datalink = NULL;
|
p8023_datalink = NULL;
|
|
|
dev_remove_pack(&ipx_dix_packet_type);
|
dev_remove_pack(&ipx_dix_packet_type);
|
destroy_EII_client(pEII_datalink);
|
destroy_EII_client(pEII_datalink);
|
pEII_datalink = NULL;
|
pEII_datalink = NULL;
|
|
|
sock_unregister(ipx_family_ops.family);
|
sock_unregister(ipx_family_ops.family);
|
}
|
}
|
|
|
module_exit(ipx_proto_finito);
|
module_exit(ipx_proto_finito);
|
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
|
|
