| 1 |
1275 |
phoenix |
/*
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| 2 |
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* Implements an IPX socket layer.
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| 3 |
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*
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| 4 |
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* This code is derived from work by
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| 5 |
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* Ross Biro : Writing the original IP stack
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| 6 |
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* Fred Van Kempen : Tidying up the TCP/IP
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| 7 |
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*
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| 8 |
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* Many thanks go to Keith Baker, Institute For Industrial Information
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| 9 |
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* Technology Ltd, Swansea University for allowing me to work on this
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| 10 |
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* in my own time even though it was in some ways related to commercial
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| 11 |
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* work I am currently employed to do there.
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| 12 |
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*
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| 13 |
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* All the material in this file is subject to the Gnu license version 2.
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| 14 |
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* Neither Alan Cox nor the Swansea University Computer Society admit
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| 15 |
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* liability nor provide warranty for any of this software. This material
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| 16 |
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* is provided as is and at no charge.
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| 17 |
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*
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| 18 |
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* Revision 0.21: Uses the new generic socket option code.
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| 19 |
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* Revision 0.22: Gcc clean ups and drop out device registration. Use the
|
| 20 |
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* new multi-protocol edition of hard_header
|
| 21 |
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* Revision 0.23: IPX /proc by Mark Evans. Adding a route will
|
| 22 |
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* will overwrite any existing route to the same network.
|
| 23 |
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* Revision 0.24: Supports new /proc with no 4K limit
|
| 24 |
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* Revision 0.25: Add ephemeral sockets, passive local network
|
| 25 |
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* identification, support for local net 0 and
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| 26 |
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* multiple datalinks <Greg Page>
|
| 27 |
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* Revision 0.26: Device drop kills IPX routes via it. (needed for module)
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| 28 |
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* Revision 0.27: Autobind <Mark Evans>
|
| 29 |
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* Revision 0.28: Small fix for multiple local networks <Thomas Winder>
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| 30 |
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* Revision 0.29: Assorted major errors removed <Mark Evans>
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| 31 |
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* Small correction to promisc mode error fix <Alan Cox>
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| 32 |
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* Asynchronous I/O support. Changed to use notifiers
|
| 33 |
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* and the newer packet_type stuff. Assorted major
|
| 34 |
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* fixes <Alejandro Liu>
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| 35 |
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* Revision 0.30: Moved to net/ipx/... <Alan Cox>
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| 36 |
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* Don't set address length on recvfrom that errors.
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| 37 |
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* Incorrect verify_area.
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| 38 |
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* Revision 0.31: New sk_buffs. This still needs a lot of
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| 39 |
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* testing. <Alan Cox>
|
| 40 |
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* Revision 0.32: Using sock_alloc_send_skb, firewall hooks. <Alan Cox>
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| 41 |
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* Supports sendmsg/recvmsg
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| 42 |
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* Revision 0.33: Internal network support, routing changes, uses a
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| 43 |
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* protocol private area for ipx data.
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| 44 |
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* Revision 0.34: Module support. <Jim Freeman>
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| 45 |
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* Revision 0.35: Checksum support. <Neil Turton>, hooked in by <Alan Cox>
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| 46 |
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* Handles WIN95 discovery packets <Volker Lendecke>
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| 47 |
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* Revision 0.36: Internal bump up for 2.1
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| 48 |
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* Revision 0.37: Began adding POSIXisms.
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| 49 |
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* Revision 0.38: Asynchronous socket stuff made current.
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| 50 |
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* Revision 0.39: SPX interfaces
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| 51 |
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* Revision 0.40: Tiny SIOCGSTAMP fix (chris@cybernet.co.nz)
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| 52 |
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* Revision 0.41: 802.2TR removed (p.norton@computer.org)
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| 53 |
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* Fixed connecting to primary net,
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| 54 |
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* Automatic binding on send & receive,
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| 55 |
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* Martijn van Oosterhout <kleptogimp@geocities.com>
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| 56 |
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* Revision 042: Multithreading - use spinlocks and refcounting to
|
| 57 |
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* protect some structures: ipx_interface sock list, list
|
| 58 |
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* of ipx interfaces, etc.
|
| 59 |
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* Bugfixes - do refcounting on net_devices, check function
|
| 60 |
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* results, etc. Thanks to davem and freitag for
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| 61 |
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* suggestions and guidance.
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| 62 |
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* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
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| 63 |
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* November, 2000
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| 64 |
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* Revision 043: Shared SKBs, don't mangle packets, some cleanups
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| 65 |
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* Arnaldo Carvalho de Melo <acme@conectiva.com.br>,
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| 66 |
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* December, 2000
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| 67 |
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* Revision 044: Call ipxitf_hold on NETDEV_UP (acme)
|
| 68 |
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* Revision 045: fix PPROP routing bug (acme)
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| 69 |
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* Revision 046: Further fixes to PPROP, ipxitf_create_internal was
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| 70 |
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* doing an unneeded MOD_INC_USE_COUNT, implement
|
| 71 |
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* sysctl for ipx_pprop_broacasting, fix the ipx sysctl
|
| 72 |
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* handling, making it dynamic, some cleanups, thanks to
|
| 73 |
|
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* Petr Vandrovec for review and good suggestions. (acme)
|
| 74 |
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* Revision 047: Cleanups, CodingStyle changes, move the ncp connection
|
| 75 |
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* hack out of line (acme)
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| 76 |
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*
|
| 77 |
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* Protect the module by a MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT
|
| 78 |
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* pair. Also, now usage count is managed this way
|
| 79 |
|
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* -Count one if the auto_interface mode is on
|
| 80 |
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* -Count one per configured interface
|
| 81 |
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*
|
| 82 |
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* Jacques Gelinas (jacques@solucorp.qc.ca)
|
| 83 |
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*
|
| 84 |
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*
|
| 85 |
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* Portions Copyright (c) 1995 Caldera, Inc. <greg@caldera.com>
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| 86 |
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* Neither Greg Page nor Caldera, Inc. admit liability nor provide
|
| 87 |
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* warranty for any of this software. This material is provided
|
| 88 |
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* "AS-IS" and at no charge.
|
| 89 |
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*/
|
| 90 |
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| 91 |
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#include <linux/config.h>
|
| 92 |
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#include <linux/module.h>
|
| 93 |
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#include <linux/errno.h>
|
| 94 |
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#include <linux/types.h>
|
| 95 |
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#include <linux/socket.h>
|
| 96 |
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#include <linux/in.h>
|
| 97 |
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#include <linux/kernel.h>
|
| 98 |
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#include <linux/sched.h>
|
| 99 |
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#include <linux/timer.h>
|
| 100 |
|
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#include <linux/string.h>
|
| 101 |
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#include <linux/sockios.h>
|
| 102 |
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#include <linux/net.h>
|
| 103 |
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#include <linux/netdevice.h>
|
| 104 |
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#include <net/ipx.h>
|
| 105 |
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#include <linux/inet.h>
|
| 106 |
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#include <linux/route.h>
|
| 107 |
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#include <net/sock.h>
|
| 108 |
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#include <asm/uaccess.h>
|
| 109 |
|
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#include <asm/system.h>
|
| 110 |
|
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#include <linux/fcntl.h>
|
| 111 |
|
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#include <linux/mm.h>
|
| 112 |
|
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#include <linux/termios.h> /* For TIOCOUTQ/INQ */
|
| 113 |
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#include <linux/interrupt.h>
|
| 114 |
|
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#include <net/p8022.h>
|
| 115 |
|
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#include <net/psnap.h>
|
| 116 |
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#include <linux/proc_fs.h>
|
| 117 |
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#include <linux/stat.h>
|
| 118 |
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#include <linux/init.h>
|
| 119 |
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#include <linux/if_arp.h>
|
| 120 |
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|
| 121 |
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#ifdef CONFIG_SYSCTL
|
| 122 |
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extern void ipx_register_sysctl(void);
|
| 123 |
|
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extern void ipx_unregister_sysctl(void);
|
| 124 |
|
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#else
|
| 125 |
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#define ipx_register_sysctl()
|
| 126 |
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#define ipx_unregister_sysctl()
|
| 127 |
|
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#endif
|
| 128 |
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|
|
| 129 |
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/* Configuration Variables */
|
| 130 |
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static unsigned char ipxcfg_max_hops = 16;
|
| 131 |
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static char ipxcfg_auto_select_primary;
|
| 132 |
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static char ipxcfg_auto_create_interfaces;
|
| 133 |
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int sysctl_ipx_pprop_broadcasting = 1;
|
| 134 |
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|
|
| 135 |
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/* Global Variables */
|
| 136 |
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static struct datalink_proto *p8022_datalink;
|
| 137 |
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static struct datalink_proto *pEII_datalink;
|
| 138 |
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static struct datalink_proto *p8023_datalink;
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| 139 |
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static struct datalink_proto *pSNAP_datalink;
|
| 140 |
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| 141 |
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static struct proto_ops ipx_dgram_ops;
|
| 142 |
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| 143 |
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static struct net_proto_family *spx_family_ops;
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| 144 |
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| 145 |
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static ipx_route *ipx_routes;
|
| 146 |
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static rwlock_t ipx_routes_lock = RW_LOCK_UNLOCKED;
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| 147 |
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| 148 |
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static ipx_interface *ipx_interfaces;
|
| 149 |
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static spinlock_t ipx_interfaces_lock = SPIN_LOCK_UNLOCKED;
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| 150 |
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| 151 |
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static ipx_interface *ipx_primary_net;
|
| 152 |
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static ipx_interface *ipx_internal_net;
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| 153 |
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| 154 |
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#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
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| 155 |
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| 156 |
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#undef IPX_REFCNT_DEBUG
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| 157 |
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#ifdef IPX_REFCNT_DEBUG
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| 158 |
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atomic_t ipx_sock_nr;
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| 159 |
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#endif
|
| 160 |
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| 161 |
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static void ipxcfg_set_auto_create(char val)
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| 162 |
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{
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| 163 |
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if (ipxcfg_auto_create_interfaces != val) {
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| 164 |
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if (val)
|
| 165 |
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MOD_INC_USE_COUNT;
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| 166 |
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else
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| 167 |
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MOD_DEC_USE_COUNT;
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| 168 |
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| 169 |
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ipxcfg_auto_create_interfaces = val;
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| 170 |
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}
|
| 171 |
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}
|
| 172 |
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|
| 173 |
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static void ipxcfg_set_auto_select(char val)
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| 174 |
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{
|
| 175 |
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ipxcfg_auto_select_primary = val;
|
| 176 |
|
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if (val && !ipx_primary_net)
|
| 177 |
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ipx_primary_net = ipx_interfaces;
|
| 178 |
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}
|
| 179 |
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|
| 180 |
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static int ipxcfg_get_config_data(ipx_config_data *arg)
|
| 181 |
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{
|
| 182 |
|
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ipx_config_data vals;
|
| 183 |
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|
| 184 |
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vals.ipxcfg_auto_create_interfaces = ipxcfg_auto_create_interfaces;
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| 185 |
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vals.ipxcfg_auto_select_primary = ipxcfg_auto_select_primary;
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| 186 |
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|
| 187 |
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return copy_to_user(arg, &vals, sizeof(vals)) ? -EFAULT : 0;
|
| 188 |
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}
|
| 189 |
|
|
|
| 190 |
|
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/* Handlers for the socket list. */
|
| 191 |
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|
| 192 |
|
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static inline void ipxitf_hold(ipx_interface *intrfc)
|
| 193 |
|
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{
|
| 194 |
|
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atomic_inc(&intrfc->refcnt);
|
| 195 |
|
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}
|
| 196 |
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|
| 197 |
|
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static void ipxitf_down(ipx_interface *intrfc);
|
| 198 |
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|
| 199 |
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static inline void ipxitf_put(ipx_interface *intrfc)
|
| 200 |
|
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{
|
| 201 |
|
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if (atomic_dec_and_test(&intrfc->refcnt))
|
| 202 |
|
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ipxitf_down(intrfc);
|
| 203 |
|
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}
|
| 204 |
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|
| 205 |
|
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static void __ipxitf_down(ipx_interface *intrfc);
|
| 206 |
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|
| 207 |
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static inline void __ipxitf_put(ipx_interface *intrfc)
|
| 208 |
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{
|
| 209 |
|
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if (atomic_dec_and_test(&intrfc->refcnt))
|
| 210 |
|
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__ipxitf_down(intrfc);
|
| 211 |
|
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}
|
| 212 |
|
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/*
|
| 213 |
|
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* Note: Sockets may not be removed _during_ an interrupt or inet_bh
|
| 214 |
|
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* handler using this technique. They can be added although we do not
|
| 215 |
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* use this facility.
|
| 216 |
|
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*/
|
| 217 |
|
|
|
| 218 |
|
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void ipx_remove_socket(struct sock *sk)
|
| 219 |
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{
|
| 220 |
|
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struct sock *s;
|
| 221 |
|
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ipx_interface *intrfc;
|
| 222 |
|
|
|
| 223 |
|
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/* Determine interface with which socket is associated */
|
| 224 |
|
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intrfc = sk->protinfo.af_ipx.intrfc;
|
| 225 |
|
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if (!intrfc)
|
| 226 |
|
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goto out;
|
| 227 |
|
|
|
| 228 |
|
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ipxitf_hold(intrfc);
|
| 229 |
|
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spin_lock_bh(&intrfc->if_sklist_lock);
|
| 230 |
|
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s = intrfc->if_sklist;
|
| 231 |
|
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if (s == sk) {
|
| 232 |
|
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intrfc->if_sklist = s->next;
|
| 233 |
|
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goto out_unlock;
|
| 234 |
|
|
}
|
| 235 |
|
|
|
| 236 |
|
|
while (s && s->next) {
|
| 237 |
|
|
if (s->next == sk) {
|
| 238 |
|
|
s->next = sk->next;
|
| 239 |
|
|
goto out_unlock;
|
| 240 |
|
|
}
|
| 241 |
|
|
s = s->next;
|
| 242 |
|
|
}
|
| 243 |
|
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out_unlock:
|
| 244 |
|
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spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 245 |
|
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sock_put(sk);
|
| 246 |
|
|
ipxitf_put(intrfc);
|
| 247 |
|
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out: return;
|
| 248 |
|
|
}
|
| 249 |
|
|
|
| 250 |
|
|
static void ipx_destroy_socket(struct sock *sk)
|
| 251 |
|
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{
|
| 252 |
|
|
ipx_remove_socket(sk);
|
| 253 |
|
|
skb_queue_purge(&sk->receive_queue);
|
| 254 |
|
|
#ifdef IPX_REFCNT_DEBUG
|
| 255 |
|
|
atomic_dec(&ipx_sock_nr);
|
| 256 |
|
|
printk(KERN_DEBUG "IPX socket %p released, %d are still alive\n", sk,
|
| 257 |
|
|
atomic_read(&ipx_sock_nr));
|
| 258 |
|
|
if (atomic_read(&sk->refcnt) != 1)
|
| 259 |
|
|
printk(KERN_DEBUG "Destruction sock ipx %p delayed, cnt=%d\n",
|
| 260 |
|
|
sk, atomic_read(&sk->refcnt));
|
| 261 |
|
|
#endif
|
| 262 |
|
|
sock_put(sk);
|
| 263 |
|
|
}
|
| 264 |
|
|
|
| 265 |
|
|
/*
|
| 266 |
|
|
* The following code is used to support IPX Interfaces (IPXITF). An
|
| 267 |
|
|
* IPX interface is defined by a physical device and a frame type.
|
| 268 |
|
|
*/
|
| 269 |
|
|
static ipx_route * ipxrtr_lookup(__u32);
|
| 270 |
|
|
|
| 271 |
|
|
/* ipxitf_clear_primary_net has to be called with ipx_interfaces_lock held */
|
| 272 |
|
|
|
| 273 |
|
|
static void ipxitf_clear_primary_net(void)
|
| 274 |
|
|
{
|
| 275 |
|
|
ipx_primary_net = ipxcfg_auto_select_primary ? ipx_interfaces : NULL;
|
| 276 |
|
|
}
|
| 277 |
|
|
|
| 278 |
|
|
static ipx_interface *__ipxitf_find_using_phys(struct net_device *dev,
|
| 279 |
|
|
unsigned short datalink)
|
| 280 |
|
|
{
|
| 281 |
|
|
ipx_interface *i = ipx_interfaces;
|
| 282 |
|
|
|
| 283 |
|
|
while (i && (i->if_dev != dev || i->if_dlink_type != datalink))
|
| 284 |
|
|
i = i->if_next;
|
| 285 |
|
|
|
| 286 |
|
|
return i;
|
| 287 |
|
|
}
|
| 288 |
|
|
|
| 289 |
|
|
static ipx_interface *ipxitf_find_using_phys(struct net_device *dev,
|
| 290 |
|
|
unsigned short datalink)
|
| 291 |
|
|
{
|
| 292 |
|
|
ipx_interface *i;
|
| 293 |
|
|
|
| 294 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 295 |
|
|
i = __ipxitf_find_using_phys(dev, datalink);
|
| 296 |
|
|
if (i)
|
| 297 |
|
|
ipxitf_hold(i);
|
| 298 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 299 |
|
|
return i;
|
| 300 |
|
|
}
|
| 301 |
|
|
|
| 302 |
|
|
static ipx_interface *ipxitf_find_using_net(__u32 net)
|
| 303 |
|
|
{
|
| 304 |
|
|
ipx_interface *i;
|
| 305 |
|
|
|
| 306 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 307 |
|
|
if (net)
|
| 308 |
|
|
for (i = ipx_interfaces; i && i->if_netnum != net;
|
| 309 |
|
|
i = i->if_next)
|
| 310 |
|
|
;
|
| 311 |
|
|
else
|
| 312 |
|
|
i = ipx_primary_net;
|
| 313 |
|
|
if (i)
|
| 314 |
|
|
ipxitf_hold(i);
|
| 315 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 316 |
|
|
|
| 317 |
|
|
return i;
|
| 318 |
|
|
}
|
| 319 |
|
|
|
| 320 |
|
|
/* Sockets are bound to a particular IPX interface. */
|
| 321 |
|
|
static void ipxitf_insert_socket(ipx_interface *intrfc, struct sock *sk)
|
| 322 |
|
|
{
|
| 323 |
|
|
ipxitf_hold(intrfc);
|
| 324 |
|
|
sock_hold(sk);
|
| 325 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 326 |
|
|
sk->protinfo.af_ipx.intrfc = intrfc;
|
| 327 |
|
|
sk->next = NULL;
|
| 328 |
|
|
if (!intrfc->if_sklist)
|
| 329 |
|
|
intrfc->if_sklist = sk;
|
| 330 |
|
|
else {
|
| 331 |
|
|
struct sock *s = intrfc->if_sklist;
|
| 332 |
|
|
while (s->next)
|
| 333 |
|
|
s = s->next;
|
| 334 |
|
|
s->next = sk;
|
| 335 |
|
|
}
|
| 336 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 337 |
|
|
ipxitf_put(intrfc);
|
| 338 |
|
|
}
|
| 339 |
|
|
|
| 340 |
|
|
/* caller must hold intrfc->if_sklist_lock */
|
| 341 |
|
|
static struct sock *__ipxitf_find_socket(ipx_interface *intrfc,
|
| 342 |
|
|
unsigned short port)
|
| 343 |
|
|
{
|
| 344 |
|
|
struct sock *s = intrfc->if_sklist;
|
| 345 |
|
|
|
| 346 |
|
|
while (s && s->protinfo.af_ipx.port != port)
|
| 347 |
|
|
s = s->next;
|
| 348 |
|
|
|
| 349 |
|
|
return s;
|
| 350 |
|
|
}
|
| 351 |
|
|
|
| 352 |
|
|
/* caller must hold a reference to intrfc */
|
| 353 |
|
|
static struct sock *ipxitf_find_socket(ipx_interface *intrfc,
|
| 354 |
|
|
unsigned short port)
|
| 355 |
|
|
{
|
| 356 |
|
|
struct sock *s;
|
| 357 |
|
|
|
| 358 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 359 |
|
|
s = __ipxitf_find_socket(intrfc, port);
|
| 360 |
|
|
if (s)
|
| 361 |
|
|
sock_hold(s);
|
| 362 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 363 |
|
|
|
| 364 |
|
|
return s;
|
| 365 |
|
|
}
|
| 366 |
|
|
|
| 367 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 368 |
|
|
static struct sock *ipxitf_find_internal_socket(ipx_interface *intrfc,
|
| 369 |
|
|
unsigned char *node, unsigned short port)
|
| 370 |
|
|
{
|
| 371 |
|
|
struct sock *s;
|
| 372 |
|
|
|
| 373 |
|
|
ipxitf_hold(intrfc);
|
| 374 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 375 |
|
|
s = intrfc->if_sklist;
|
| 376 |
|
|
|
| 377 |
|
|
while (s) {
|
| 378 |
|
|
if (s->protinfo.af_ipx.port == port &&
|
| 379 |
|
|
!memcmp(node, s->protinfo.af_ipx.node, IPX_NODE_LEN))
|
| 380 |
|
|
break;
|
| 381 |
|
|
s = s->next;
|
| 382 |
|
|
}
|
| 383 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 384 |
|
|
ipxitf_put(intrfc);
|
| 385 |
|
|
|
| 386 |
|
|
return s;
|
| 387 |
|
|
}
|
| 388 |
|
|
#endif
|
| 389 |
|
|
|
| 390 |
|
|
static void ipxrtr_del_routes(ipx_interface *);
|
| 391 |
|
|
|
| 392 |
|
|
static void __ipxitf_down(ipx_interface *intrfc)
|
| 393 |
|
|
{
|
| 394 |
|
|
struct sock *s, *t;
|
| 395 |
|
|
|
| 396 |
|
|
/* Delete all routes associated with this interface */
|
| 397 |
|
|
ipxrtr_del_routes(intrfc);
|
| 398 |
|
|
|
| 399 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 400 |
|
|
/* error sockets */
|
| 401 |
|
|
for (s = intrfc->if_sklist; s;) {
|
| 402 |
|
|
s->err = ENOLINK;
|
| 403 |
|
|
s->error_report(s);
|
| 404 |
|
|
s->protinfo.af_ipx.intrfc = NULL;
|
| 405 |
|
|
s->protinfo.af_ipx.port = 0;
|
| 406 |
|
|
s->zapped = 1; /* Indicates it is no longer bound */
|
| 407 |
|
|
t = s;
|
| 408 |
|
|
s = s->next;
|
| 409 |
|
|
t->next = NULL;
|
| 410 |
|
|
}
|
| 411 |
|
|
intrfc->if_sklist = NULL;
|
| 412 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 413 |
|
|
|
| 414 |
|
|
/* remove this interface from list */
|
| 415 |
|
|
if (intrfc == ipx_interfaces)
|
| 416 |
|
|
ipx_interfaces = intrfc->if_next;
|
| 417 |
|
|
else {
|
| 418 |
|
|
ipx_interface *i = ipx_interfaces;
|
| 419 |
|
|
while (i && i->if_next != intrfc)
|
| 420 |
|
|
i = i->if_next;
|
| 421 |
|
|
if (i && i->if_next == intrfc)
|
| 422 |
|
|
i->if_next = intrfc->if_next;
|
| 423 |
|
|
}
|
| 424 |
|
|
|
| 425 |
|
|
/* remove this interface from *special* networks */
|
| 426 |
|
|
if (intrfc == ipx_primary_net)
|
| 427 |
|
|
ipxitf_clear_primary_net();
|
| 428 |
|
|
if (intrfc == ipx_internal_net)
|
| 429 |
|
|
ipx_internal_net = NULL;
|
| 430 |
|
|
|
| 431 |
|
|
if (intrfc->if_dev)
|
| 432 |
|
|
dev_put(intrfc->if_dev);
|
| 433 |
|
|
kfree(intrfc);
|
| 434 |
|
|
MOD_DEC_USE_COUNT;
|
| 435 |
|
|
}
|
| 436 |
|
|
|
| 437 |
|
|
static void ipxitf_down(ipx_interface *intrfc)
|
| 438 |
|
|
{
|
| 439 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 440 |
|
|
__ipxitf_down(intrfc);
|
| 441 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 442 |
|
|
}
|
| 443 |
|
|
|
| 444 |
|
|
static int ipxitf_device_event(struct notifier_block *notifier,
|
| 445 |
|
|
unsigned long event, void *ptr)
|
| 446 |
|
|
{
|
| 447 |
|
|
struct net_device *dev = ptr;
|
| 448 |
|
|
ipx_interface *i, *tmp;
|
| 449 |
|
|
|
| 450 |
|
|
if (event != NETDEV_DOWN && event != NETDEV_UP)
|
| 451 |
|
|
goto out;
|
| 452 |
|
|
|
| 453 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 454 |
|
|
for (i = ipx_interfaces; i;) {
|
| 455 |
|
|
tmp = i->if_next;
|
| 456 |
|
|
if (i->if_dev == dev) {
|
| 457 |
|
|
if (event == NETDEV_UP)
|
| 458 |
|
|
ipxitf_hold(i);
|
| 459 |
|
|
else
|
| 460 |
|
|
__ipxitf_put(i);
|
| 461 |
|
|
}
|
| 462 |
|
|
i = tmp;
|
| 463 |
|
|
}
|
| 464 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 465 |
|
|
out: return NOTIFY_DONE;
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
static void ipxitf_def_skb_handler(struct sock *sock, struct sk_buff *skb)
|
| 469 |
|
|
{
|
| 470 |
|
|
if (sock_queue_rcv_skb(sock, skb) < 0)
|
| 471 |
|
|
kfree_skb(skb);
|
| 472 |
|
|
}
|
| 473 |
|
|
|
| 474 |
|
|
/*
|
| 475 |
|
|
* On input skb->sk is NULL. Nobody is charged for the memory.
|
| 476 |
|
|
*/
|
| 477 |
|
|
|
| 478 |
|
|
/* caller must hold a reference to intrfc */
|
| 479 |
|
|
|
| 480 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 481 |
|
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
| 482 |
|
|
int copy)
|
| 483 |
|
|
{
|
| 484 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 485 |
|
|
int is_broadcast = !memcmp(ipx->ipx_dest.node, ipx_broadcast_node,
|
| 486 |
|
|
IPX_NODE_LEN);
|
| 487 |
|
|
struct sock *s;
|
| 488 |
|
|
int ret;
|
| 489 |
|
|
|
| 490 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 491 |
|
|
s = intrfc->if_sklist;
|
| 492 |
|
|
|
| 493 |
|
|
while (s) {
|
| 494 |
|
|
if (s->protinfo.af_ipx.port == ipx->ipx_dest.sock &&
|
| 495 |
|
|
(is_broadcast || !memcmp(ipx->ipx_dest.node,
|
| 496 |
|
|
s->protinfo.af_ipx.node,
|
| 497 |
|
|
IPX_NODE_LEN))) {
|
| 498 |
|
|
/* We found a socket to which to send */
|
| 499 |
|
|
struct sk_buff *skb1;
|
| 500 |
|
|
|
| 501 |
|
|
if (copy) {
|
| 502 |
|
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
| 503 |
|
|
ret = -ENOMEM;
|
| 504 |
|
|
if (!skb1)
|
| 505 |
|
|
goto out;
|
| 506 |
|
|
} else {
|
| 507 |
|
|
skb1 = skb;
|
| 508 |
|
|
copy = 1; /* skb may only be used once */
|
| 509 |
|
|
}
|
| 510 |
|
|
ipxitf_def_skb_handler(s, skb1);
|
| 511 |
|
|
|
| 512 |
|
|
/* On an external interface, one socket can listen */
|
| 513 |
|
|
if (intrfc != ipx_internal_net)
|
| 514 |
|
|
break;
|
| 515 |
|
|
}
|
| 516 |
|
|
s = s->next;
|
| 517 |
|
|
}
|
| 518 |
|
|
|
| 519 |
|
|
/* skb was solely for us, and we did not make a copy, so free it. */
|
| 520 |
|
|
if (!copy)
|
| 521 |
|
|
kfree_skb(skb);
|
| 522 |
|
|
|
| 523 |
|
|
ret = 0;
|
| 524 |
|
|
out: spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 525 |
|
|
return ret;
|
| 526 |
|
|
}
|
| 527 |
|
|
#else
|
| 528 |
|
|
static struct sock *ncp_connection_hack(ipx_interface *intrfc,
|
| 529 |
|
|
struct ipxhdr *ipx)
|
| 530 |
|
|
{
|
| 531 |
|
|
/* The packet's target is a NCP connection handler. We want to hand it
|
| 532 |
|
|
* to the correct socket directly within the kernel, so that the
|
| 533 |
|
|
* mars_nwe packet distribution process does not have to do it. Here we
|
| 534 |
|
|
* only care about NCP and BURST packets.
|
| 535 |
|
|
*
|
| 536 |
|
|
* You might call this a hack, but believe me, you do not want a
|
| 537 |
|
|
* complete NCP layer in the kernel, and this is VERY fast as well. */
|
| 538 |
|
|
struct sock *sk = NULL;
|
| 539 |
|
|
int connection = 0;
|
| 540 |
|
|
u8 *ncphdr = (u8 *)(ipx + 1);
|
| 541 |
|
|
|
| 542 |
|
|
if (*ncphdr == 0x22 && *(ncphdr + 1) == 0x22) /* NCP request */
|
| 543 |
|
|
connection = (((int) *(ncphdr + 5)) << 8) | (int) *(ncphdr + 3);
|
| 544 |
|
|
else if (*ncphdr == 0x77 && *(ncphdr + 1) == 0x77) /* BURST packet */
|
| 545 |
|
|
connection = (((int) *(ncphdr + 9)) << 8) | (int) *(ncphdr + 8);
|
| 546 |
|
|
|
| 547 |
|
|
if (connection) {
|
| 548 |
|
|
/* Now we have to look for a special NCP connection handling
|
| 549 |
|
|
* socket. Only these sockets have ipx_ncp_conn != 0, set by
|
| 550 |
|
|
* SIOCIPXNCPCONN. */
|
| 551 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 552 |
|
|
for (sk = intrfc->if_sklist;
|
| 553 |
|
|
sk && sk->protinfo.af_ipx.ipx_ncp_conn != connection;
|
| 554 |
|
|
sk = sk->next);
|
| 555 |
|
|
if (sk)
|
| 556 |
|
|
sock_hold(sk);
|
| 557 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 558 |
|
|
}
|
| 559 |
|
|
return sk;
|
| 560 |
|
|
}
|
| 561 |
|
|
|
| 562 |
|
|
static int ipxitf_demux_socket(ipx_interface *intrfc, struct sk_buff *skb,
|
| 563 |
|
|
int copy)
|
| 564 |
|
|
{
|
| 565 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 566 |
|
|
struct sock *sock1 = NULL, *sock2 = NULL;
|
| 567 |
|
|
struct sk_buff *skb1 = NULL, *skb2 = NULL;
|
| 568 |
|
|
int ret;
|
| 569 |
|
|
|
| 570 |
|
|
if (intrfc == ipx_primary_net && ntohs(ipx->ipx_dest.sock) == 0x451)
|
| 571 |
|
|
sock1 = ncp_connection_hack(intrfc, ipx);
|
| 572 |
|
|
if (!sock1)
|
| 573 |
|
|
/* No special socket found, forward the packet the normal way */
|
| 574 |
|
|
sock1 = ipxitf_find_socket(intrfc, ipx->ipx_dest.sock);
|
| 575 |
|
|
|
| 576 |
|
|
/*
|
| 577 |
|
|
* We need to check if there is a primary net and if
|
| 578 |
|
|
* this is addressed to one of the *SPECIAL* sockets because
|
| 579 |
|
|
* these need to be propagated to the primary net.
|
| 580 |
|
|
* The *SPECIAL* socket list contains: 0x452(SAP), 0x453(RIP) and
|
| 581 |
|
|
* 0x456(Diagnostic).
|
| 582 |
|
|
*/
|
| 583 |
|
|
|
| 584 |
|
|
if (ipx_primary_net && intrfc != ipx_primary_net) {
|
| 585 |
|
|
const int dsock = ntohs(ipx->ipx_dest.sock);
|
| 586 |
|
|
|
| 587 |
|
|
if (dsock == 0x452 || dsock == 0x453 || dsock == 0x456)
|
| 588 |
|
|
/* The appropriate thing to do here is to dup the
|
| 589 |
|
|
* packet and route to the primary net interface via
|
| 590 |
|
|
* ipxitf_send; however, we'll cheat and just demux it
|
| 591 |
|
|
* here. */
|
| 592 |
|
|
sock2 = ipxitf_find_socket(ipx_primary_net,
|
| 593 |
|
|
ipx->ipx_dest.sock);
|
| 594 |
|
|
}
|
| 595 |
|
|
|
| 596 |
|
|
/*
|
| 597 |
|
|
* If there is nothing to do return. The kfree will cancel any charging.
|
| 598 |
|
|
*/
|
| 599 |
|
|
if (!sock1 && !sock2) {
|
| 600 |
|
|
if (!copy)
|
| 601 |
|
|
kfree_skb(skb);
|
| 602 |
|
|
return 0;
|
| 603 |
|
|
}
|
| 604 |
|
|
|
| 605 |
|
|
/*
|
| 606 |
|
|
* This next segment of code is a little awkward, but it sets it up
|
| 607 |
|
|
* so that the appropriate number of copies of the SKB are made and
|
| 608 |
|
|
* that skb1 and skb2 point to it (them) so that it (they) can be
|
| 609 |
|
|
* demuxed to sock1 and/or sock2. If we are unable to make enough
|
| 610 |
|
|
* copies, we do as much as is possible.
|
| 611 |
|
|
*/
|
| 612 |
|
|
|
| 613 |
|
|
if (copy)
|
| 614 |
|
|
skb1 = skb_clone(skb, GFP_ATOMIC);
|
| 615 |
|
|
else
|
| 616 |
|
|
skb1 = skb;
|
| 617 |
|
|
|
| 618 |
|
|
ret = -ENOMEM;
|
| 619 |
|
|
if (!skb1)
|
| 620 |
|
|
goto out;
|
| 621 |
|
|
|
| 622 |
|
|
/* Do we need 2 SKBs? */
|
| 623 |
|
|
if (sock1 && sock2)
|
| 624 |
|
|
skb2 = skb_clone(skb1, GFP_ATOMIC);
|
| 625 |
|
|
else
|
| 626 |
|
|
skb2 = skb1;
|
| 627 |
|
|
|
| 628 |
|
|
if (sock1)
|
| 629 |
|
|
ipxitf_def_skb_handler(sock1, skb1);
|
| 630 |
|
|
|
| 631 |
|
|
ret = -ENOMEM;
|
| 632 |
|
|
if (!skb2)
|
| 633 |
|
|
goto out;
|
| 634 |
|
|
|
| 635 |
|
|
if (sock2)
|
| 636 |
|
|
ipxitf_def_skb_handler(sock2, skb2);
|
| 637 |
|
|
|
| 638 |
|
|
ret = 0;
|
| 639 |
|
|
out: if (sock1)
|
| 640 |
|
|
sock_put(sock1);
|
| 641 |
|
|
if (sock2)
|
| 642 |
|
|
sock_put(sock2);
|
| 643 |
|
|
return ret;
|
| 644 |
|
|
}
|
| 645 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 646 |
|
|
|
| 647 |
|
|
static struct sk_buff *ipxitf_adjust_skbuff(ipx_interface *intrfc,
|
| 648 |
|
|
struct sk_buff *skb)
|
| 649 |
|
|
{
|
| 650 |
|
|
struct sk_buff *skb2;
|
| 651 |
|
|
int in_offset = skb->h.raw - skb->head;
|
| 652 |
|
|
int out_offset = intrfc->if_ipx_offset;
|
| 653 |
|
|
int len;
|
| 654 |
|
|
|
| 655 |
|
|
/* Hopefully, most cases */
|
| 656 |
|
|
if (in_offset >= out_offset)
|
| 657 |
|
|
return skb;
|
| 658 |
|
|
|
| 659 |
|
|
/* Need new SKB */
|
| 660 |
|
|
len = skb->len + out_offset;
|
| 661 |
|
|
skb2 = alloc_skb(len, GFP_ATOMIC);
|
| 662 |
|
|
if (skb2) {
|
| 663 |
|
|
skb_reserve(skb2, out_offset);
|
| 664 |
|
|
skb2->nh.raw = skb2->h.raw = skb_put(skb2, skb->len);
|
| 665 |
|
|
memcpy(skb2->h.raw, skb->h.raw, skb->len);
|
| 666 |
|
|
memcpy(skb2->cb, skb->cb, sizeof(skb->cb));
|
| 667 |
|
|
}
|
| 668 |
|
|
kfree_skb(skb);
|
| 669 |
|
|
return skb2;
|
| 670 |
|
|
}
|
| 671 |
|
|
|
| 672 |
|
|
/* caller must hold a reference to intrfc and the skb has to be unshared */
|
| 673 |
|
|
|
| 674 |
|
|
static int ipxitf_send(ipx_interface *intrfc, struct sk_buff *skb, char *node)
|
| 675 |
|
|
{
|
| 676 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 677 |
|
|
struct net_device *dev = intrfc->if_dev;
|
| 678 |
|
|
struct datalink_proto *dl = intrfc->if_dlink;
|
| 679 |
|
|
char dest_node[IPX_NODE_LEN];
|
| 680 |
|
|
int send_to_wire = 1;
|
| 681 |
|
|
int addr_len;
|
| 682 |
|
|
|
| 683 |
|
|
ipx->ipx_tctrl = IPX_SKB_CB(skb)->ipx_tctrl;
|
| 684 |
|
|
ipx->ipx_dest.net = IPX_SKB_CB(skb)->ipx_dest_net;
|
| 685 |
|
|
ipx->ipx_source.net = IPX_SKB_CB(skb)->ipx_source_net;
|
| 686 |
|
|
|
| 687 |
|
|
/* see if we need to include the netnum in the route list */
|
| 688 |
|
|
if (IPX_SKB_CB(skb)->last_hop.index >= 0) {
|
| 689 |
|
|
u32 *last_hop = (u32 *)(((u8 *) skb->data) +
|
| 690 |
|
|
sizeof(struct ipxhdr) +
|
| 691 |
|
|
IPX_SKB_CB(skb)->last_hop.index *
|
| 692 |
|
|
sizeof(u32));
|
| 693 |
|
|
*last_hop = IPX_SKB_CB(skb)->last_hop.netnum;
|
| 694 |
|
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
| 695 |
|
|
}
|
| 696 |
|
|
|
| 697 |
|
|
/*
|
| 698 |
|
|
* We need to know how many skbuffs it will take to send out this
|
| 699 |
|
|
* packet to avoid unnecessary copies.
|
| 700 |
|
|
*/
|
| 701 |
|
|
|
| 702 |
|
|
if (!dl || !dev || dev->flags & IFF_LOOPBACK)
|
| 703 |
|
|
send_to_wire = 0; /* No non looped */
|
| 704 |
|
|
|
| 705 |
|
|
/*
|
| 706 |
|
|
* See if this should be demuxed to sockets on this interface
|
| 707 |
|
|
*
|
| 708 |
|
|
* We want to ensure the original was eaten or that we only use
|
| 709 |
|
|
* up clones.
|
| 710 |
|
|
*/
|
| 711 |
|
|
|
| 712 |
|
|
if (ipx->ipx_dest.net == intrfc->if_netnum) {
|
| 713 |
|
|
/*
|
| 714 |
|
|
* To our own node, loop and free the original.
|
| 715 |
|
|
* The internal net will receive on all node address.
|
| 716 |
|
|
*/
|
| 717 |
|
|
if (intrfc == ipx_internal_net ||
|
| 718 |
|
|
!memcmp(intrfc->if_node, node, IPX_NODE_LEN)) {
|
| 719 |
|
|
/* Don't charge sender */
|
| 720 |
|
|
skb_orphan(skb);
|
| 721 |
|
|
|
| 722 |
|
|
/* Will charge receiver */
|
| 723 |
|
|
return ipxitf_demux_socket(intrfc, skb, 0);
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
/* Broadcast, loop and possibly keep to send on. */
|
| 727 |
|
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN)) {
|
| 728 |
|
|
if (!send_to_wire)
|
| 729 |
|
|
skb_orphan(skb);
|
| 730 |
|
|
ipxitf_demux_socket(intrfc, skb, send_to_wire);
|
| 731 |
|
|
if (!send_to_wire)
|
| 732 |
|
|
goto out;
|
| 733 |
|
|
}
|
| 734 |
|
|
}
|
| 735 |
|
|
|
| 736 |
|
|
/*
|
| 737 |
|
|
* If the originating net is not equal to our net; this is routed
|
| 738 |
|
|
* We are still charging the sender. Which is right - the driver
|
| 739 |
|
|
* free will handle this fairly.
|
| 740 |
|
|
*/
|
| 741 |
|
|
if (ipx->ipx_source.net != intrfc->if_netnum) {
|
| 742 |
|
|
/*
|
| 743 |
|
|
* Unshare the buffer before modifying the count in
|
| 744 |
|
|
* case its a flood or tcpdump
|
| 745 |
|
|
*/
|
| 746 |
|
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
| 747 |
|
|
if (!skb)
|
| 748 |
|
|
goto out;
|
| 749 |
|
|
if (++ipx->ipx_tctrl > ipxcfg_max_hops)
|
| 750 |
|
|
send_to_wire = 0;
|
| 751 |
|
|
}
|
| 752 |
|
|
|
| 753 |
|
|
if (!send_to_wire) {
|
| 754 |
|
|
kfree_skb(skb);
|
| 755 |
|
|
goto out;
|
| 756 |
|
|
}
|
| 757 |
|
|
|
| 758 |
|
|
/* Determine the appropriate hardware address */
|
| 759 |
|
|
addr_len = dev->addr_len;
|
| 760 |
|
|
if (!memcmp(ipx_broadcast_node, node, IPX_NODE_LEN))
|
| 761 |
|
|
memcpy(dest_node, dev->broadcast, addr_len);
|
| 762 |
|
|
else
|
| 763 |
|
|
memcpy(dest_node, &(node[IPX_NODE_LEN-addr_len]), addr_len);
|
| 764 |
|
|
|
| 765 |
|
|
/* Make any compensation for differing physical/data link size */
|
| 766 |
|
|
skb = ipxitf_adjust_skbuff(intrfc, skb);
|
| 767 |
|
|
if (!skb)
|
| 768 |
|
|
goto out;
|
| 769 |
|
|
|
| 770 |
|
|
/* set up data link and physical headers */
|
| 771 |
|
|
skb->dev = dev;
|
| 772 |
|
|
skb->protocol = __constant_htons(ETH_P_IPX);
|
| 773 |
|
|
dl->datalink_header(dl, skb, dest_node);
|
| 774 |
|
|
|
| 775 |
|
|
/* Send it out */
|
| 776 |
|
|
dev_queue_xmit(skb);
|
| 777 |
|
|
out: return 0;
|
| 778 |
|
|
}
|
| 779 |
|
|
|
| 780 |
|
|
static int ipxrtr_add_route(__u32, ipx_interface *, unsigned char *);
|
| 781 |
|
|
|
| 782 |
|
|
static int ipxitf_add_local_route(ipx_interface *intrfc)
|
| 783 |
|
|
{
|
| 784 |
|
|
return ipxrtr_add_route(intrfc->if_netnum, intrfc, NULL);
|
| 785 |
|
|
}
|
| 786 |
|
|
|
| 787 |
|
|
static const char * ipx_frame_name(unsigned short);
|
| 788 |
|
|
static const char * ipx_device_name(ipx_interface *);
|
| 789 |
|
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb);
|
| 790 |
|
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb);
|
| 791 |
|
|
|
| 792 |
|
|
static int ipxitf_rcv(ipx_interface *intrfc, struct sk_buff *skb)
|
| 793 |
|
|
{
|
| 794 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 795 |
|
|
int ret = 0;
|
| 796 |
|
|
|
| 797 |
|
|
ipxitf_hold(intrfc);
|
| 798 |
|
|
|
| 799 |
|
|
/* See if we should update our network number */
|
| 800 |
|
|
if (!intrfc->if_netnum) /* net number of intrfc not known yet */
|
| 801 |
|
|
ipxitf_discover_netnum(intrfc, skb);
|
| 802 |
|
|
|
| 803 |
|
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
| 804 |
|
|
if (ipx->ipx_type == IPX_TYPE_PPROP) {
|
| 805 |
|
|
ret = ipxitf_pprop(intrfc, skb);
|
| 806 |
|
|
if (ret)
|
| 807 |
|
|
goto out_free_skb;
|
| 808 |
|
|
}
|
| 809 |
|
|
|
| 810 |
|
|
/* local processing follows */
|
| 811 |
|
|
if (!IPX_SKB_CB(skb)->ipx_dest_net)
|
| 812 |
|
|
IPX_SKB_CB(skb)->ipx_dest_net = intrfc->if_netnum;
|
| 813 |
|
|
if (!IPX_SKB_CB(skb)->ipx_source_net)
|
| 814 |
|
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
| 815 |
|
|
|
| 816 |
|
|
/* it doesn't make sense to route a pprop packet, there's no meaning
|
| 817 |
|
|
* in the ipx_dest_net for such packets */
|
| 818 |
|
|
if (ipx->ipx_type != IPX_TYPE_PPROP &&
|
| 819 |
|
|
intrfc->if_netnum != IPX_SKB_CB(skb)->ipx_dest_net) {
|
| 820 |
|
|
/* We only route point-to-point packets. */
|
| 821 |
|
|
if (skb->pkt_type == PACKET_HOST) {
|
| 822 |
|
|
skb = skb_unshare(skb, GFP_ATOMIC);
|
| 823 |
|
|
if (skb)
|
| 824 |
|
|
ret = ipxrtr_route_skb(skb);
|
| 825 |
|
|
goto out_intrfc;
|
| 826 |
|
|
}
|
| 827 |
|
|
|
| 828 |
|
|
goto out_free_skb;
|
| 829 |
|
|
}
|
| 830 |
|
|
|
| 831 |
|
|
/* see if we should keep it */
|
| 832 |
|
|
if (!memcmp(ipx_broadcast_node, ipx->ipx_dest.node, IPX_NODE_LEN) ||
|
| 833 |
|
|
!memcmp(intrfc->if_node, ipx->ipx_dest.node, IPX_NODE_LEN)) {
|
| 834 |
|
|
ret = ipxitf_demux_socket(intrfc, skb, 0);
|
| 835 |
|
|
goto out_intrfc;
|
| 836 |
|
|
}
|
| 837 |
|
|
|
| 838 |
|
|
/* we couldn't pawn it off so unload it */
|
| 839 |
|
|
out_free_skb:
|
| 840 |
|
|
kfree_skb(skb);
|
| 841 |
|
|
out_intrfc:
|
| 842 |
|
|
ipxitf_put(intrfc);
|
| 843 |
|
|
return ret;
|
| 844 |
|
|
}
|
| 845 |
|
|
|
| 846 |
|
|
static void ipxitf_discover_netnum(ipx_interface *intrfc, struct sk_buff *skb)
|
| 847 |
|
|
{
|
| 848 |
|
|
const struct ipx_cb *cb = IPX_SKB_CB(skb);
|
| 849 |
|
|
|
| 850 |
|
|
/* see if this is an intra packet: source_net == dest_net */
|
| 851 |
|
|
if (cb->ipx_source_net == cb->ipx_dest_net && cb->ipx_source_net) {
|
| 852 |
|
|
ipx_interface *i = ipxitf_find_using_net(cb->ipx_source_net);
|
| 853 |
|
|
/* NB: NetWare servers lie about their hop count so we
|
| 854 |
|
|
* dropped the test based on it. This is the best way
|
| 855 |
|
|
* to determine this is a 0 hop count packet. */
|
| 856 |
|
|
if (!i) {
|
| 857 |
|
|
intrfc->if_netnum = cb->ipx_source_net;
|
| 858 |
|
|
ipxitf_add_local_route(intrfc);
|
| 859 |
|
|
} else {
|
| 860 |
|
|
printk(KERN_WARNING "IPX: Network number collision "
|
| 861 |
|
|
"%lx\n %s %s and %s %s\n",
|
| 862 |
|
|
(unsigned long) htonl(cb->ipx_source_net),
|
| 863 |
|
|
ipx_device_name(i),
|
| 864 |
|
|
ipx_frame_name(i->if_dlink_type),
|
| 865 |
|
|
ipx_device_name(intrfc),
|
| 866 |
|
|
ipx_frame_name(intrfc->if_dlink_type));
|
| 867 |
|
|
ipxitf_put(i);
|
| 868 |
|
|
}
|
| 869 |
|
|
}
|
| 870 |
|
|
}
|
| 871 |
|
|
|
| 872 |
|
|
/**
|
| 873 |
|
|
* ipxitf_pprop - Process packet propagation IPX packet type 0x14, used for
|
| 874 |
|
|
* NetBIOS broadcasts
|
| 875 |
|
|
* @intrfc: IPX interface receiving this packet
|
| 876 |
|
|
* @skb: Received packet
|
| 877 |
|
|
*
|
| 878 |
|
|
* Checks if packet is valid: if its more than %IPX_MAX_PPROP_HOPS hops or if it
|
| 879 |
|
|
* is smaller than a IPX header + the room for %IPX_MAX_PPROP_HOPS hops we drop
|
| 880 |
|
|
* it, not even processing it locally, if it has exact %IPX_MAX_PPROP_HOPS we
|
| 881 |
|
|
* don't broadcast it, but process it locally. See chapter 5 of Novell's "IPX
|
| 882 |
|
|
* RIP and SAP Router Specification", Part Number 107-000029-001.
|
| 883 |
|
|
*
|
| 884 |
|
|
* If it is valid, check if we have pprop broadcasting enabled by the user,
|
| 885 |
|
|
* if not, just return zero for local processing.
|
| 886 |
|
|
*
|
| 887 |
|
|
* If it is enabled check the packet and don't broadcast it if we have already
|
| 888 |
|
|
* seen this packet.
|
| 889 |
|
|
*
|
| 890 |
|
|
* Broadcast: send it to the interfaces that aren't on the packet visited nets
|
| 891 |
|
|
* array, just after the IPX header.
|
| 892 |
|
|
*
|
| 893 |
|
|
* Returns -EINVAL for invalid packets, so that the calling function drops
|
| 894 |
|
|
* the packet without local processing. 0 if packet is to be locally processed.
|
| 895 |
|
|
*/
|
| 896 |
|
|
static int ipxitf_pprop(ipx_interface *intrfc, struct sk_buff *skb)
|
| 897 |
|
|
{
|
| 898 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 899 |
|
|
int i, ret = -EINVAL;
|
| 900 |
|
|
ipx_interface *ifcs;
|
| 901 |
|
|
char *c;
|
| 902 |
|
|
u32 *l;
|
| 903 |
|
|
|
| 904 |
|
|
/* Illegal packet - too many hops or too short */
|
| 905 |
|
|
/* We decide to throw it away: no broadcasting, no local processing.
|
| 906 |
|
|
* NetBIOS unaware implementations route them as normal packets -
|
| 907 |
|
|
* tctrl <= 15, any data payload... */
|
| 908 |
|
|
if (IPX_SKB_CB(skb)->ipx_tctrl > IPX_MAX_PPROP_HOPS ||
|
| 909 |
|
|
ntohs(ipx->ipx_pktsize) < sizeof(struct ipxhdr) +
|
| 910 |
|
|
IPX_MAX_PPROP_HOPS * sizeof(u32))
|
| 911 |
|
|
goto out;
|
| 912 |
|
|
/* are we broadcasting this damn thing? */
|
| 913 |
|
|
ret = 0;
|
| 914 |
|
|
if (!sysctl_ipx_pprop_broadcasting)
|
| 915 |
|
|
goto out;
|
| 916 |
|
|
/* We do broadcast packet on the IPX_MAX_PPROP_HOPS hop, but we
|
| 917 |
|
|
* process it locally. All previous hops broadcasted it, and process it
|
| 918 |
|
|
* locally. */
|
| 919 |
|
|
if (IPX_SKB_CB(skb)->ipx_tctrl == IPX_MAX_PPROP_HOPS)
|
| 920 |
|
|
goto out;
|
| 921 |
|
|
|
| 922 |
|
|
c = ((u8 *) ipx) + sizeof(struct ipxhdr);
|
| 923 |
|
|
l = (u32 *) c;
|
| 924 |
|
|
|
| 925 |
|
|
/* Don't broadcast packet if already seen this net */
|
| 926 |
|
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
| 927 |
|
|
if (*l++ == intrfc->if_netnum)
|
| 928 |
|
|
goto out;
|
| 929 |
|
|
|
| 930 |
|
|
/* < IPX_MAX_PPROP_HOPS hops && input interface not in list. Save the
|
| 931 |
|
|
* position where we will insert recvd netnum into list, later on,
|
| 932 |
|
|
* in ipxitf_send */
|
| 933 |
|
|
IPX_SKB_CB(skb)->last_hop.index = i;
|
| 934 |
|
|
IPX_SKB_CB(skb)->last_hop.netnum = intrfc->if_netnum;
|
| 935 |
|
|
/* xmit on all other interfaces... */
|
| 936 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 937 |
|
|
for (ifcs = ipx_interfaces; ifcs; ifcs = ifcs->if_next) {
|
| 938 |
|
|
/* Except unconfigured interfaces */
|
| 939 |
|
|
if (!ifcs->if_netnum)
|
| 940 |
|
|
continue;
|
| 941 |
|
|
|
| 942 |
|
|
/* That aren't in the list */
|
| 943 |
|
|
if (ifcs == intrfc)
|
| 944 |
|
|
continue;
|
| 945 |
|
|
l = (__u32 *) c;
|
| 946 |
|
|
/* don't consider the last entry in the packet list,
|
| 947 |
|
|
* it is our netnum, and it is not there yet */
|
| 948 |
|
|
for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
|
| 949 |
|
|
if (ifcs->if_netnum == *l++)
|
| 950 |
|
|
break;
|
| 951 |
|
|
if (i == IPX_SKB_CB(skb)->ipx_tctrl) {
|
| 952 |
|
|
struct sk_buff *s = skb_copy(skb, GFP_ATOMIC);
|
| 953 |
|
|
|
| 954 |
|
|
if (s) {
|
| 955 |
|
|
IPX_SKB_CB(s)->ipx_dest_net = ifcs->if_netnum;
|
| 956 |
|
|
ipxrtr_route_skb(s);
|
| 957 |
|
|
}
|
| 958 |
|
|
}
|
| 959 |
|
|
}
|
| 960 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 961 |
|
|
out: return ret;
|
| 962 |
|
|
}
|
| 963 |
|
|
|
| 964 |
|
|
static void ipxitf_insert(ipx_interface *intrfc)
|
| 965 |
|
|
{
|
| 966 |
|
|
intrfc->if_next = NULL;
|
| 967 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 968 |
|
|
if (!ipx_interfaces)
|
| 969 |
|
|
ipx_interfaces = intrfc;
|
| 970 |
|
|
else {
|
| 971 |
|
|
ipx_interface *i = ipx_interfaces;
|
| 972 |
|
|
while (i->if_next)
|
| 973 |
|
|
i = i->if_next;
|
| 974 |
|
|
i->if_next = intrfc;
|
| 975 |
|
|
}
|
| 976 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 977 |
|
|
|
| 978 |
|
|
if (ipxcfg_auto_select_primary && !ipx_primary_net)
|
| 979 |
|
|
ipx_primary_net = intrfc;
|
| 980 |
|
|
}
|
| 981 |
|
|
|
| 982 |
|
|
static ipx_interface *ipxitf_alloc(struct net_device *dev, __u32 netnum,
|
| 983 |
|
|
unsigned short dlink_type,
|
| 984 |
|
|
struct datalink_proto *dlink,
|
| 985 |
|
|
unsigned char internal, int ipx_offset)
|
| 986 |
|
|
{
|
| 987 |
|
|
ipx_interface *intrfc = kmalloc(sizeof(*intrfc), GFP_ATOMIC);
|
| 988 |
|
|
|
| 989 |
|
|
if (intrfc) {
|
| 990 |
|
|
intrfc->if_dev = dev;
|
| 991 |
|
|
intrfc->if_netnum = netnum;
|
| 992 |
|
|
intrfc->if_dlink_type = dlink_type;
|
| 993 |
|
|
intrfc->if_dlink = dlink;
|
| 994 |
|
|
intrfc->if_internal = internal;
|
| 995 |
|
|
intrfc->if_ipx_offset = ipx_offset;
|
| 996 |
|
|
intrfc->if_sknum = IPX_MIN_EPHEMERAL_SOCKET;
|
| 997 |
|
|
intrfc->if_sklist = NULL;
|
| 998 |
|
|
atomic_set(&intrfc->refcnt, 1);
|
| 999 |
|
|
spin_lock_init(&intrfc->if_sklist_lock);
|
| 1000 |
|
|
MOD_INC_USE_COUNT;
|
| 1001 |
|
|
}
|
| 1002 |
|
|
|
| 1003 |
|
|
return intrfc;
|
| 1004 |
|
|
}
|
| 1005 |
|
|
|
| 1006 |
|
|
static int ipxitf_create_internal(ipx_interface_definition *idef)
|
| 1007 |
|
|
{
|
| 1008 |
|
|
ipx_interface *intrfc;
|
| 1009 |
|
|
int ret = -EEXIST;
|
| 1010 |
|
|
|
| 1011 |
|
|
/* Only one primary network allowed */
|
| 1012 |
|
|
if (ipx_primary_net)
|
| 1013 |
|
|
goto out;
|
| 1014 |
|
|
|
| 1015 |
|
|
/* Must have a valid network number */
|
| 1016 |
|
|
ret = -EADDRNOTAVAIL;
|
| 1017 |
|
|
if (!idef->ipx_network)
|
| 1018 |
|
|
goto out;
|
| 1019 |
|
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
| 1020 |
|
|
ret = -EADDRINUSE;
|
| 1021 |
|
|
if (intrfc) {
|
| 1022 |
|
|
ipxitf_put(intrfc);
|
| 1023 |
|
|
goto out;
|
| 1024 |
|
|
}
|
| 1025 |
|
|
intrfc = ipxitf_alloc(NULL, idef->ipx_network, 0, NULL, 1, 0);
|
| 1026 |
|
|
ret = -EAGAIN;
|
| 1027 |
|
|
if (!intrfc)
|
| 1028 |
|
|
goto out;
|
| 1029 |
|
|
memcpy((char *)&(intrfc->if_node), idef->ipx_node, IPX_NODE_LEN);
|
| 1030 |
|
|
ipx_internal_net = ipx_primary_net = intrfc;
|
| 1031 |
|
|
ipxitf_hold(intrfc);
|
| 1032 |
|
|
ipxitf_insert(intrfc);
|
| 1033 |
|
|
|
| 1034 |
|
|
ret = ipxitf_add_local_route(intrfc);
|
| 1035 |
|
|
ipxitf_put(intrfc);
|
| 1036 |
|
|
out: return ret;
|
| 1037 |
|
|
}
|
| 1038 |
|
|
|
| 1039 |
|
|
static int ipx_map_frame_type(unsigned char type)
|
| 1040 |
|
|
{
|
| 1041 |
|
|
int ret = 0;
|
| 1042 |
|
|
|
| 1043 |
|
|
switch (type) {
|
| 1044 |
|
|
case IPX_FRAME_ETHERII:
|
| 1045 |
|
|
ret = __constant_htons(ETH_P_IPX);
|
| 1046 |
|
|
break;
|
| 1047 |
|
|
case IPX_FRAME_8022:
|
| 1048 |
|
|
ret = __constant_htons(ETH_P_802_2);
|
| 1049 |
|
|
break;
|
| 1050 |
|
|
case IPX_FRAME_SNAP:
|
| 1051 |
|
|
ret = __constant_htons(ETH_P_SNAP);
|
| 1052 |
|
|
break;
|
| 1053 |
|
|
case IPX_FRAME_8023:
|
| 1054 |
|
|
ret = __constant_htons(ETH_P_802_3);
|
| 1055 |
|
|
break;
|
| 1056 |
|
|
}
|
| 1057 |
|
|
|
| 1058 |
|
|
return ret;
|
| 1059 |
|
|
}
|
| 1060 |
|
|
|
| 1061 |
|
|
static int ipxitf_create(ipx_interface_definition *idef)
|
| 1062 |
|
|
{
|
| 1063 |
|
|
struct net_device *dev;
|
| 1064 |
|
|
unsigned short dlink_type = 0;
|
| 1065 |
|
|
struct datalink_proto *datalink = NULL;
|
| 1066 |
|
|
ipx_interface *intrfc;
|
| 1067 |
|
|
int err;
|
| 1068 |
|
|
|
| 1069 |
|
|
if (idef->ipx_special == IPX_INTERNAL) {
|
| 1070 |
|
|
err = ipxitf_create_internal(idef);
|
| 1071 |
|
|
goto out;
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
err = -EEXIST;
|
| 1075 |
|
|
if (idef->ipx_special == IPX_PRIMARY && ipx_primary_net)
|
| 1076 |
|
|
goto out;
|
| 1077 |
|
|
|
| 1078 |
|
|
intrfc = ipxitf_find_using_net(idef->ipx_network);
|
| 1079 |
|
|
err = -EADDRINUSE;
|
| 1080 |
|
|
if (idef->ipx_network && intrfc) {
|
| 1081 |
|
|
ipxitf_put(intrfc);
|
| 1082 |
|
|
goto out;
|
| 1083 |
|
|
}
|
| 1084 |
|
|
|
| 1085 |
|
|
if (intrfc)
|
| 1086 |
|
|
ipxitf_put(intrfc);
|
| 1087 |
|
|
|
| 1088 |
|
|
dev = dev_get_by_name(idef->ipx_device);
|
| 1089 |
|
|
err = -ENODEV;
|
| 1090 |
|
|
if (!dev)
|
| 1091 |
|
|
goto out;
|
| 1092 |
|
|
|
| 1093 |
|
|
switch (idef->ipx_dlink_type) {
|
| 1094 |
|
|
case IPX_FRAME_TR_8022:
|
| 1095 |
|
|
printk(KERN_WARNING "IPX frame type 802.2TR is "
|
| 1096 |
|
|
"obsolete Use 802.2 instead.\n");
|
| 1097 |
|
|
/* fall through */
|
| 1098 |
|
|
case IPX_FRAME_8022:
|
| 1099 |
|
|
dlink_type = __constant_htons(ETH_P_802_2);
|
| 1100 |
|
|
datalink = p8022_datalink;
|
| 1101 |
|
|
break;
|
| 1102 |
|
|
case IPX_FRAME_ETHERII:
|
| 1103 |
|
|
if (dev->type != ARPHRD_IEEE802) {
|
| 1104 |
|
|
dlink_type = __constant_htons(ETH_P_IPX);
|
| 1105 |
|
|
datalink = pEII_datalink;
|
| 1106 |
|
|
break;
|
| 1107 |
|
|
} else
|
| 1108 |
|
|
printk(KERN_WARNING "IPX frame type EtherII "
|
| 1109 |
|
|
"over token-ring is obsolete. Use SNAP "
|
| 1110 |
|
|
"instead.\n");
|
| 1111 |
|
|
/* fall through */
|
| 1112 |
|
|
case IPX_FRAME_SNAP:
|
| 1113 |
|
|
dlink_type = __constant_htons(ETH_P_SNAP);
|
| 1114 |
|
|
datalink = pSNAP_datalink;
|
| 1115 |
|
|
break;
|
| 1116 |
|
|
case IPX_FRAME_8023:
|
| 1117 |
|
|
dlink_type = __constant_htons(ETH_P_802_3);
|
| 1118 |
|
|
datalink = p8023_datalink;
|
| 1119 |
|
|
break;
|
| 1120 |
|
|
case IPX_FRAME_NONE:
|
| 1121 |
|
|
default:
|
| 1122 |
|
|
err = -EPROTONOSUPPORT;
|
| 1123 |
|
|
goto out_dev;
|
| 1124 |
|
|
}
|
| 1125 |
|
|
|
| 1126 |
|
|
err = -ENETDOWN;
|
| 1127 |
|
|
if (!(dev->flags & IFF_UP))
|
| 1128 |
|
|
goto out_dev;
|
| 1129 |
|
|
|
| 1130 |
|
|
/* Check addresses are suitable */
|
| 1131 |
|
|
err = -EINVAL;
|
| 1132 |
|
|
if (dev->addr_len > IPX_NODE_LEN)
|
| 1133 |
|
|
goto out_dev;
|
| 1134 |
|
|
|
| 1135 |
|
|
intrfc = ipxitf_find_using_phys(dev, dlink_type);
|
| 1136 |
|
|
if (!intrfc) {
|
| 1137 |
|
|
/* Ok now create */
|
| 1138 |
|
|
intrfc = ipxitf_alloc(dev, idef->ipx_network, dlink_type,
|
| 1139 |
|
|
datalink, 0, dev->hard_header_len +
|
| 1140 |
|
|
datalink->header_length);
|
| 1141 |
|
|
err = -EAGAIN;
|
| 1142 |
|
|
if (!intrfc)
|
| 1143 |
|
|
goto out_dev;
|
| 1144 |
|
|
/* Setup primary if necessary */
|
| 1145 |
|
|
if (idef->ipx_special == IPX_PRIMARY)
|
| 1146 |
|
|
ipx_primary_net = intrfc;
|
| 1147 |
|
|
if (!memcmp(idef->ipx_node, "\000\000\000\000\000\000",
|
| 1148 |
|
|
IPX_NODE_LEN)) {
|
| 1149 |
|
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
| 1150 |
|
|
memcpy(intrfc->if_node + IPX_NODE_LEN - dev->addr_len,
|
| 1151 |
|
|
dev->dev_addr, dev->addr_len);
|
| 1152 |
|
|
} else
|
| 1153 |
|
|
memcpy(intrfc->if_node, idef->ipx_node, IPX_NODE_LEN);
|
| 1154 |
|
|
ipxitf_hold(intrfc);
|
| 1155 |
|
|
ipxitf_insert(intrfc);
|
| 1156 |
|
|
}
|
| 1157 |
|
|
|
| 1158 |
|
|
|
| 1159 |
|
|
/* If the network number is known, add a route */
|
| 1160 |
|
|
err = 0;
|
| 1161 |
|
|
if (!intrfc->if_netnum)
|
| 1162 |
|
|
goto out_intrfc;
|
| 1163 |
|
|
|
| 1164 |
|
|
err = ipxitf_add_local_route(intrfc);
|
| 1165 |
|
|
out_intrfc:
|
| 1166 |
|
|
ipxitf_put(intrfc);
|
| 1167 |
|
|
goto out;
|
| 1168 |
|
|
out_dev:
|
| 1169 |
|
|
dev_put(dev);
|
| 1170 |
|
|
out: return err;
|
| 1171 |
|
|
}
|
| 1172 |
|
|
|
| 1173 |
|
|
static int ipxitf_delete(ipx_interface_definition *idef)
|
| 1174 |
|
|
{
|
| 1175 |
|
|
struct net_device *dev = NULL;
|
| 1176 |
|
|
unsigned short dlink_type = 0;
|
| 1177 |
|
|
ipx_interface *intrfc;
|
| 1178 |
|
|
int ret = 0;
|
| 1179 |
|
|
|
| 1180 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 1181 |
|
|
if (idef->ipx_special == IPX_INTERNAL) {
|
| 1182 |
|
|
if (ipx_internal_net) {
|
| 1183 |
|
|
__ipxitf_put(ipx_internal_net);
|
| 1184 |
|
|
goto out;
|
| 1185 |
|
|
}
|
| 1186 |
|
|
ret = -ENOENT;
|
| 1187 |
|
|
goto out;
|
| 1188 |
|
|
}
|
| 1189 |
|
|
|
| 1190 |
|
|
dlink_type = ipx_map_frame_type(idef->ipx_dlink_type);
|
| 1191 |
|
|
ret = -EPROTONOSUPPORT;
|
| 1192 |
|
|
if (!dlink_type)
|
| 1193 |
|
|
goto out;
|
| 1194 |
|
|
|
| 1195 |
|
|
dev = __dev_get_by_name(idef->ipx_device);
|
| 1196 |
|
|
ret = -ENODEV;
|
| 1197 |
|
|
if (!dev)
|
| 1198 |
|
|
goto out;
|
| 1199 |
|
|
|
| 1200 |
|
|
intrfc = __ipxitf_find_using_phys(dev, dlink_type);
|
| 1201 |
|
|
ret = -EINVAL;
|
| 1202 |
|
|
if (!intrfc)
|
| 1203 |
|
|
goto out;
|
| 1204 |
|
|
__ipxitf_put(intrfc);
|
| 1205 |
|
|
|
| 1206 |
|
|
ret = 0;
|
| 1207 |
|
|
out: spin_unlock_bh(&ipx_interfaces_lock);
|
| 1208 |
|
|
return ret;
|
| 1209 |
|
|
}
|
| 1210 |
|
|
|
| 1211 |
|
|
static ipx_interface *ipxitf_auto_create(struct net_device *dev,
|
| 1212 |
|
|
unsigned short dlink_type)
|
| 1213 |
|
|
{
|
| 1214 |
|
|
ipx_interface *intrfc = NULL;
|
| 1215 |
|
|
struct datalink_proto *datalink;
|
| 1216 |
|
|
|
| 1217 |
|
|
if (!dev)
|
| 1218 |
|
|
goto out;
|
| 1219 |
|
|
|
| 1220 |
|
|
/* Check addresses are suitable */
|
| 1221 |
|
|
if (dev->addr_len > IPX_NODE_LEN)
|
| 1222 |
|
|
goto out;
|
| 1223 |
|
|
|
| 1224 |
|
|
switch (htons(dlink_type)) {
|
| 1225 |
|
|
case ETH_P_IPX:
|
| 1226 |
|
|
datalink = pEII_datalink;
|
| 1227 |
|
|
break;
|
| 1228 |
|
|
|
| 1229 |
|
|
case ETH_P_802_2:
|
| 1230 |
|
|
datalink = p8022_datalink;
|
| 1231 |
|
|
break;
|
| 1232 |
|
|
|
| 1233 |
|
|
case ETH_P_SNAP:
|
| 1234 |
|
|
datalink = pSNAP_datalink;
|
| 1235 |
|
|
break;
|
| 1236 |
|
|
|
| 1237 |
|
|
case ETH_P_802_3:
|
| 1238 |
|
|
datalink = p8023_datalink;
|
| 1239 |
|
|
break;
|
| 1240 |
|
|
|
| 1241 |
|
|
default:
|
| 1242 |
|
|
goto out;
|
| 1243 |
|
|
}
|
| 1244 |
|
|
|
| 1245 |
|
|
intrfc = ipxitf_alloc(dev, 0, dlink_type, datalink, 0,
|
| 1246 |
|
|
dev->hard_header_len + datalink->header_length);
|
| 1247 |
|
|
|
| 1248 |
|
|
if (intrfc) {
|
| 1249 |
|
|
memset(intrfc->if_node, 0, IPX_NODE_LEN);
|
| 1250 |
|
|
memcpy((char *)&(intrfc->if_node[IPX_NODE_LEN-dev->addr_len]),
|
| 1251 |
|
|
dev->dev_addr, dev->addr_len);
|
| 1252 |
|
|
spin_lock_init(&intrfc->if_sklist_lock);
|
| 1253 |
|
|
atomic_set(&intrfc->refcnt, 1);
|
| 1254 |
|
|
ipxitf_insert(intrfc);
|
| 1255 |
|
|
dev_hold(dev);
|
| 1256 |
|
|
}
|
| 1257 |
|
|
|
| 1258 |
|
|
out: return intrfc;
|
| 1259 |
|
|
}
|
| 1260 |
|
|
|
| 1261 |
|
|
static int ipxitf_ioctl(unsigned int cmd, void *arg)
|
| 1262 |
|
|
{
|
| 1263 |
|
|
struct ifreq ifr;
|
| 1264 |
|
|
int val;
|
| 1265 |
|
|
|
| 1266 |
|
|
switch (cmd) {
|
| 1267 |
|
|
case SIOCSIFADDR: {
|
| 1268 |
|
|
struct sockaddr_ipx *sipx;
|
| 1269 |
|
|
ipx_interface_definition f;
|
| 1270 |
|
|
|
| 1271 |
|
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
| 1272 |
|
|
return -EFAULT;
|
| 1273 |
|
|
|
| 1274 |
|
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
| 1275 |
|
|
if (sipx->sipx_family != AF_IPX)
|
| 1276 |
|
|
return -EINVAL;
|
| 1277 |
|
|
|
| 1278 |
|
|
f.ipx_network = sipx->sipx_network;
|
| 1279 |
|
|
memcpy(f.ipx_device, ifr.ifr_name,
|
| 1280 |
|
|
sizeof(f.ipx_device));
|
| 1281 |
|
|
memcpy(f.ipx_node, sipx->sipx_node, IPX_NODE_LEN);
|
| 1282 |
|
|
f.ipx_dlink_type = sipx->sipx_type;
|
| 1283 |
|
|
f.ipx_special = sipx->sipx_special;
|
| 1284 |
|
|
|
| 1285 |
|
|
if (sipx->sipx_action == IPX_DLTITF)
|
| 1286 |
|
|
return ipxitf_delete(&f);
|
| 1287 |
|
|
else
|
| 1288 |
|
|
return ipxitf_create(&f);
|
| 1289 |
|
|
}
|
| 1290 |
|
|
|
| 1291 |
|
|
case SIOCGIFADDR: {
|
| 1292 |
|
|
int err = 0;
|
| 1293 |
|
|
struct sockaddr_ipx *sipx;
|
| 1294 |
|
|
ipx_interface *ipxif;
|
| 1295 |
|
|
struct net_device *dev;
|
| 1296 |
|
|
|
| 1297 |
|
|
if (copy_from_user(&ifr, arg, sizeof(ifr)))
|
| 1298 |
|
|
return -EFAULT;
|
| 1299 |
|
|
|
| 1300 |
|
|
sipx = (struct sockaddr_ipx *)&ifr.ifr_addr;
|
| 1301 |
|
|
dev = __dev_get_by_name(ifr.ifr_name);
|
| 1302 |
|
|
if (!dev)
|
| 1303 |
|
|
return -ENODEV;
|
| 1304 |
|
|
|
| 1305 |
|
|
ipxif = ipxitf_find_using_phys(dev, ipx_map_frame_type(sipx->sipx_type));
|
| 1306 |
|
|
if (!ipxif)
|
| 1307 |
|
|
return -EADDRNOTAVAIL;
|
| 1308 |
|
|
|
| 1309 |
|
|
sipx->sipx_family = AF_IPX;
|
| 1310 |
|
|
sipx->sipx_network = ipxif->if_netnum;
|
| 1311 |
|
|
memcpy(sipx->sipx_node, ipxif->if_node,
|
| 1312 |
|
|
sizeof(sipx->sipx_node));
|
| 1313 |
|
|
if (copy_to_user(arg, &ifr, sizeof(ifr)))
|
| 1314 |
|
|
err = -EFAULT;
|
| 1315 |
|
|
|
| 1316 |
|
|
ipxitf_put(ipxif);
|
| 1317 |
|
|
return err;
|
| 1318 |
|
|
}
|
| 1319 |
|
|
|
| 1320 |
|
|
case SIOCAIPXITFCRT:
|
| 1321 |
|
|
if (get_user(val, (unsigned char *) arg))
|
| 1322 |
|
|
return -EFAULT;
|
| 1323 |
|
|
ipxcfg_set_auto_create(val);
|
| 1324 |
|
|
break;
|
| 1325 |
|
|
|
| 1326 |
|
|
case SIOCAIPXPRISLT:
|
| 1327 |
|
|
if (get_user(val, (unsigned char *) arg))
|
| 1328 |
|
|
return -EFAULT;
|
| 1329 |
|
|
ipxcfg_set_auto_select(val);
|
| 1330 |
|
|
break;
|
| 1331 |
|
|
|
| 1332 |
|
|
default:
|
| 1333 |
|
|
return -EINVAL;
|
| 1334 |
|
|
}
|
| 1335 |
|
|
|
| 1336 |
|
|
return 0;
|
| 1337 |
|
|
}
|
| 1338 |
|
|
|
| 1339 |
|
|
/* Routing tables for the IPX socket layer. */
|
| 1340 |
|
|
|
| 1341 |
|
|
static inline void ipxrtr_hold(ipx_route *rt)
|
| 1342 |
|
|
{
|
| 1343 |
|
|
atomic_inc(&rt->refcnt);
|
| 1344 |
|
|
}
|
| 1345 |
|
|
|
| 1346 |
|
|
static inline void ipxrtr_put(ipx_route *rt)
|
| 1347 |
|
|
{
|
| 1348 |
|
|
if (atomic_dec_and_test(&rt->refcnt))
|
| 1349 |
|
|
kfree(rt);
|
| 1350 |
|
|
}
|
| 1351 |
|
|
|
| 1352 |
|
|
static ipx_route *ipxrtr_lookup(__u32 net)
|
| 1353 |
|
|
{
|
| 1354 |
|
|
ipx_route *r;
|
| 1355 |
|
|
|
| 1356 |
|
|
read_lock_bh(&ipx_routes_lock);
|
| 1357 |
|
|
for (r = ipx_routes; r && r->ir_net != net; r = r->ir_next)
|
| 1358 |
|
|
;
|
| 1359 |
|
|
if (r)
|
| 1360 |
|
|
ipxrtr_hold(r);
|
| 1361 |
|
|
read_unlock_bh(&ipx_routes_lock);
|
| 1362 |
|
|
|
| 1363 |
|
|
return r;
|
| 1364 |
|
|
}
|
| 1365 |
|
|
|
| 1366 |
|
|
/* caller must hold a reference to intrfc */
|
| 1367 |
|
|
|
| 1368 |
|
|
static int ipxrtr_add_route(__u32 network, ipx_interface *intrfc,
|
| 1369 |
|
|
unsigned char *node)
|
| 1370 |
|
|
{
|
| 1371 |
|
|
ipx_route *rt;
|
| 1372 |
|
|
int ret;
|
| 1373 |
|
|
|
| 1374 |
|
|
/* Get a route structure; either existing or create */
|
| 1375 |
|
|
rt = ipxrtr_lookup(network);
|
| 1376 |
|
|
if (!rt) {
|
| 1377 |
|
|
rt = kmalloc(sizeof(ipx_route), GFP_ATOMIC);
|
| 1378 |
|
|
ret = -EAGAIN;
|
| 1379 |
|
|
if (!rt)
|
| 1380 |
|
|
goto out;
|
| 1381 |
|
|
|
| 1382 |
|
|
atomic_set(&rt->refcnt, 1);
|
| 1383 |
|
|
ipxrtr_hold(rt);
|
| 1384 |
|
|
write_lock_bh(&ipx_routes_lock);
|
| 1385 |
|
|
rt->ir_next = ipx_routes;
|
| 1386 |
|
|
ipx_routes = rt;
|
| 1387 |
|
|
write_unlock_bh(&ipx_routes_lock);
|
| 1388 |
|
|
} else {
|
| 1389 |
|
|
ret = -EEXIST;
|
| 1390 |
|
|
if (intrfc == ipx_internal_net)
|
| 1391 |
|
|
goto out_put;
|
| 1392 |
|
|
}
|
| 1393 |
|
|
|
| 1394 |
|
|
rt->ir_net = network;
|
| 1395 |
|
|
rt->ir_intrfc = intrfc;
|
| 1396 |
|
|
if (!node) {
|
| 1397 |
|
|
memset(rt->ir_router_node, '\0', IPX_NODE_LEN);
|
| 1398 |
|
|
rt->ir_routed = 0;
|
| 1399 |
|
|
} else {
|
| 1400 |
|
|
memcpy(rt->ir_router_node, node, IPX_NODE_LEN);
|
| 1401 |
|
|
rt->ir_routed = 1;
|
| 1402 |
|
|
}
|
| 1403 |
|
|
|
| 1404 |
|
|
ret = 0;
|
| 1405 |
|
|
out_put:
|
| 1406 |
|
|
ipxrtr_put(rt);
|
| 1407 |
|
|
out: return ret;
|
| 1408 |
|
|
}
|
| 1409 |
|
|
|
| 1410 |
|
|
static void ipxrtr_del_routes(ipx_interface *intrfc)
|
| 1411 |
|
|
{
|
| 1412 |
|
|
ipx_route **r, *tmp;
|
| 1413 |
|
|
|
| 1414 |
|
|
write_lock_bh(&ipx_routes_lock);
|
| 1415 |
|
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
| 1416 |
|
|
if (tmp->ir_intrfc == intrfc) {
|
| 1417 |
|
|
*r = tmp->ir_next;
|
| 1418 |
|
|
ipxrtr_put(tmp);
|
| 1419 |
|
|
} else
|
| 1420 |
|
|
r = &(tmp->ir_next);
|
| 1421 |
|
|
}
|
| 1422 |
|
|
write_unlock_bh(&ipx_routes_lock);
|
| 1423 |
|
|
}
|
| 1424 |
|
|
|
| 1425 |
|
|
static int ipxrtr_create(ipx_route_definition *rd)
|
| 1426 |
|
|
{
|
| 1427 |
|
|
ipx_interface *intrfc;
|
| 1428 |
|
|
int ret = -ENETUNREACH;
|
| 1429 |
|
|
|
| 1430 |
|
|
/* Find the appropriate interface */
|
| 1431 |
|
|
intrfc = ipxitf_find_using_net(rd->ipx_router_network);
|
| 1432 |
|
|
if (!intrfc)
|
| 1433 |
|
|
goto out;
|
| 1434 |
|
|
ret = ipxrtr_add_route(rd->ipx_network, intrfc, rd->ipx_router_node);
|
| 1435 |
|
|
ipxitf_put(intrfc);
|
| 1436 |
|
|
out: return ret;
|
| 1437 |
|
|
}
|
| 1438 |
|
|
|
| 1439 |
|
|
static int ipxrtr_delete(long net)
|
| 1440 |
|
|
{
|
| 1441 |
|
|
ipx_route **r;
|
| 1442 |
|
|
ipx_route *tmp;
|
| 1443 |
|
|
int err;
|
| 1444 |
|
|
|
| 1445 |
|
|
write_lock_bh(&ipx_routes_lock);
|
| 1446 |
|
|
for (r = &ipx_routes; (tmp = *r) != NULL;) {
|
| 1447 |
|
|
if (tmp->ir_net == net) {
|
| 1448 |
|
|
/* Directly connected; can't lose route */
|
| 1449 |
|
|
err = -EPERM;
|
| 1450 |
|
|
if (!tmp->ir_routed)
|
| 1451 |
|
|
goto out;
|
| 1452 |
|
|
|
| 1453 |
|
|
*r = tmp->ir_next;
|
| 1454 |
|
|
ipxrtr_put(tmp);
|
| 1455 |
|
|
err = 0;
|
| 1456 |
|
|
goto out;
|
| 1457 |
|
|
}
|
| 1458 |
|
|
|
| 1459 |
|
|
r = &(tmp->ir_next);
|
| 1460 |
|
|
}
|
| 1461 |
|
|
err = -ENOENT;
|
| 1462 |
|
|
out: write_unlock_bh(&ipx_routes_lock);
|
| 1463 |
|
|
return err;
|
| 1464 |
|
|
}
|
| 1465 |
|
|
|
| 1466 |
|
|
/*
|
| 1467 |
|
|
* Checksum routine for IPX
|
| 1468 |
|
|
*/
|
| 1469 |
|
|
|
| 1470 |
|
|
/* Note: We assume ipx_tctrl==0 and htons(length)==ipx_pktsize */
|
| 1471 |
|
|
/* This functions should *not* mess with packet contents */
|
| 1472 |
|
|
|
| 1473 |
|
|
static __u16 ipx_cksum(struct ipxhdr *packet, int length)
|
| 1474 |
|
|
{
|
| 1475 |
|
|
/*
|
| 1476 |
|
|
* NOTE: sum is a net byte order quantity, which optimizes the
|
| 1477 |
|
|
* loop. This only works on big and little endian machines. (I
|
| 1478 |
|
|
* don't know of a machine that isn't.)
|
| 1479 |
|
|
*/
|
| 1480 |
|
|
/* start at ipx_dest - We skip the checksum field and start with
|
| 1481 |
|
|
* ipx_type before the loop, not considering ipx_tctrl in the calc */
|
| 1482 |
|
|
__u16 *p = (__u16 *)&packet->ipx_dest;
|
| 1483 |
|
|
__u32 i = (length >> 1) - 1; /* Number of complete words */
|
| 1484 |
|
|
__u32 sum = packet->ipx_type << sizeof(packet->ipx_tctrl);
|
| 1485 |
|
|
|
| 1486 |
|
|
/* Loop through all complete words except the checksum field,
|
| 1487 |
|
|
* ipx_type (accounted above) and ipx_tctrl (not used in the cksum) */
|
| 1488 |
|
|
while (--i)
|
| 1489 |
|
|
sum += *p++;
|
| 1490 |
|
|
|
| 1491 |
|
|
/* Add on the last part word if it exists */
|
| 1492 |
|
|
if (packet->ipx_pktsize & __constant_htons(1))
|
| 1493 |
|
|
sum += ntohs(0xff00) & *p;
|
| 1494 |
|
|
|
| 1495 |
|
|
/* Do final fixup */
|
| 1496 |
|
|
sum = (sum & 0xffff) + (sum >> 16);
|
| 1497 |
|
|
|
| 1498 |
|
|
/* It's a pity there's no concept of carry in C */
|
| 1499 |
|
|
if (sum >= 0x10000)
|
| 1500 |
|
|
sum++;
|
| 1501 |
|
|
|
| 1502 |
|
|
return ~sum;
|
| 1503 |
|
|
}
|
| 1504 |
|
|
|
| 1505 |
|
|
/*
|
| 1506 |
|
|
* Route an outgoing frame from a socket.
|
| 1507 |
|
|
*/
|
| 1508 |
|
|
static int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
|
| 1509 |
|
|
struct iovec *iov, int len, int noblock)
|
| 1510 |
|
|
{
|
| 1511 |
|
|
struct sk_buff *skb;
|
| 1512 |
|
|
ipx_interface *intrfc;
|
| 1513 |
|
|
struct ipxhdr *ipx;
|
| 1514 |
|
|
int size;
|
| 1515 |
|
|
int ipx_offset;
|
| 1516 |
|
|
ipx_route *rt = NULL;
|
| 1517 |
|
|
int err;
|
| 1518 |
|
|
|
| 1519 |
|
|
/* Find the appropriate interface on which to send packet */
|
| 1520 |
|
|
if (!usipx->sipx_network && ipx_primary_net) {
|
| 1521 |
|
|
usipx->sipx_network = ipx_primary_net->if_netnum;
|
| 1522 |
|
|
intrfc = ipx_primary_net;
|
| 1523 |
|
|
} else {
|
| 1524 |
|
|
rt = ipxrtr_lookup(usipx->sipx_network);
|
| 1525 |
|
|
err = -ENETUNREACH;
|
| 1526 |
|
|
if (!rt)
|
| 1527 |
|
|
goto out;
|
| 1528 |
|
|
intrfc = rt->ir_intrfc;
|
| 1529 |
|
|
}
|
| 1530 |
|
|
|
| 1531 |
|
|
ipxitf_hold(intrfc);
|
| 1532 |
|
|
ipx_offset = intrfc->if_ipx_offset;
|
| 1533 |
|
|
size = sizeof(struct ipxhdr) + len + ipx_offset;
|
| 1534 |
|
|
|
| 1535 |
|
|
skb = sock_alloc_send_skb(sk, size, noblock, &err);
|
| 1536 |
|
|
if (!skb)
|
| 1537 |
|
|
goto out_put;
|
| 1538 |
|
|
|
| 1539 |
|
|
skb_reserve(skb, ipx_offset);
|
| 1540 |
|
|
skb->sk = sk;
|
| 1541 |
|
|
|
| 1542 |
|
|
/* Fill in IPX header */
|
| 1543 |
|
|
ipx = (struct ipxhdr *)skb_put(skb, sizeof(struct ipxhdr));
|
| 1544 |
|
|
ipx->ipx_pktsize = htons(len + sizeof(struct ipxhdr));
|
| 1545 |
|
|
IPX_SKB_CB(skb)->ipx_tctrl = 0;
|
| 1546 |
|
|
ipx->ipx_type = usipx->sipx_type;
|
| 1547 |
|
|
skb->h.raw = (void *)skb->nh.ipxh = ipx;
|
| 1548 |
|
|
|
| 1549 |
|
|
IPX_SKB_CB(skb)->last_hop.index = -1;
|
| 1550 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 1551 |
|
|
IPX_SKB_CB(skb)->ipx_source_net = sk->protinfo.af_ipx.intrfc->if_netnum;
|
| 1552 |
|
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.node, IPX_NODE_LEN);
|
| 1553 |
|
|
#else
|
| 1554 |
|
|
err = ntohs(sk->protinfo.af_ipx.port);
|
| 1555 |
|
|
if (err == 0x453 || err == 0x452) {
|
| 1556 |
|
|
/* RIP/SAP special handling for mars_nwe */
|
| 1557 |
|
|
IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
|
| 1558 |
|
|
memcpy(ipx->ipx_source.node, intrfc->if_node, IPX_NODE_LEN);
|
| 1559 |
|
|
} else {
|
| 1560 |
|
|
IPX_SKB_CB(skb)->ipx_source_net =
|
| 1561 |
|
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
| 1562 |
|
|
memcpy(ipx->ipx_source.node, sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
| 1563 |
|
|
}
|
| 1564 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 1565 |
|
|
ipx->ipx_source.sock = sk->protinfo.af_ipx.port;
|
| 1566 |
|
|
IPX_SKB_CB(skb)->ipx_dest_net = usipx->sipx_network;
|
| 1567 |
|
|
memcpy(ipx->ipx_dest.node, usipx->sipx_node, IPX_NODE_LEN);
|
| 1568 |
|
|
ipx->ipx_dest.sock = usipx->sipx_port;
|
| 1569 |
|
|
|
| 1570 |
|
|
err = memcpy_fromiovec(skb_put(skb, len), iov, len);
|
| 1571 |
|
|
if (err) {
|
| 1572 |
|
|
kfree_skb(skb);
|
| 1573 |
|
|
goto out_put;
|
| 1574 |
|
|
}
|
| 1575 |
|
|
|
| 1576 |
|
|
/* Apply checksum. Not allowed on 802.3 links. */
|
| 1577 |
|
|
if (sk->no_check || intrfc->if_dlink_type == IPX_FRAME_8023)
|
| 1578 |
|
|
ipx->ipx_checksum = 0xFFFF;
|
| 1579 |
|
|
else
|
| 1580 |
|
|
ipx->ipx_checksum = ipx_cksum(ipx, len + sizeof(struct ipxhdr));
|
| 1581 |
|
|
|
| 1582 |
|
|
err = ipxitf_send(intrfc, skb, (rt && rt->ir_routed) ?
|
| 1583 |
|
|
rt->ir_router_node : ipx->ipx_dest.node);
|
| 1584 |
|
|
out_put:
|
| 1585 |
|
|
ipxitf_put(intrfc);
|
| 1586 |
|
|
if (rt)
|
| 1587 |
|
|
ipxrtr_put(rt);
|
| 1588 |
|
|
out: return err;
|
| 1589 |
|
|
}
|
| 1590 |
|
|
|
| 1591 |
|
|
/* the skb has to be unshared, we'll end up calling ipxitf_send, that'll
|
| 1592 |
|
|
* modify the packet */
|
| 1593 |
|
|
int ipxrtr_route_skb(struct sk_buff *skb)
|
| 1594 |
|
|
{
|
| 1595 |
|
|
struct ipxhdr *ipx = skb->nh.ipxh;
|
| 1596 |
|
|
ipx_route *r = ipxrtr_lookup(IPX_SKB_CB(skb)->ipx_dest_net);
|
| 1597 |
|
|
|
| 1598 |
|
|
if (!r) { /* no known route */
|
| 1599 |
|
|
kfree_skb(skb);
|
| 1600 |
|
|
return 0;
|
| 1601 |
|
|
}
|
| 1602 |
|
|
|
| 1603 |
|
|
ipxitf_hold(r->ir_intrfc);
|
| 1604 |
|
|
ipxitf_send(r->ir_intrfc, skb, r->ir_routed ?
|
| 1605 |
|
|
r->ir_router_node : ipx->ipx_dest.node);
|
| 1606 |
|
|
ipxitf_put(r->ir_intrfc);
|
| 1607 |
|
|
ipxrtr_put(r);
|
| 1608 |
|
|
|
| 1609 |
|
|
return 0;
|
| 1610 |
|
|
}
|
| 1611 |
|
|
|
| 1612 |
|
|
/*
|
| 1613 |
|
|
* We use a normal struct rtentry for route handling
|
| 1614 |
|
|
*/
|
| 1615 |
|
|
static int ipxrtr_ioctl(unsigned int cmd, void *arg)
|
| 1616 |
|
|
{
|
| 1617 |
|
|
struct rtentry rt; /* Use these to behave like 'other' stacks */
|
| 1618 |
|
|
struct sockaddr_ipx *sg, *st;
|
| 1619 |
|
|
int ret = -EFAULT;
|
| 1620 |
|
|
|
| 1621 |
|
|
if (copy_from_user(&rt, arg, sizeof(rt)))
|
| 1622 |
|
|
goto out;
|
| 1623 |
|
|
|
| 1624 |
|
|
sg = (struct sockaddr_ipx *)&rt.rt_gateway;
|
| 1625 |
|
|
st = (struct sockaddr_ipx *)&rt.rt_dst;
|
| 1626 |
|
|
|
| 1627 |
|
|
ret = -EINVAL;
|
| 1628 |
|
|
if (!(rt.rt_flags & RTF_GATEWAY) || /* Direct routes are fixed */
|
| 1629 |
|
|
sg->sipx_family != AF_IPX ||
|
| 1630 |
|
|
st->sipx_family != AF_IPX)
|
| 1631 |
|
|
goto out;
|
| 1632 |
|
|
|
| 1633 |
|
|
switch (cmd) {
|
| 1634 |
|
|
case SIOCDELRT:
|
| 1635 |
|
|
ret = ipxrtr_delete(st->sipx_network);
|
| 1636 |
|
|
break;
|
| 1637 |
|
|
case SIOCADDRT: {
|
| 1638 |
|
|
struct ipx_route_definition f;
|
| 1639 |
|
|
f.ipx_network = st->sipx_network;
|
| 1640 |
|
|
f.ipx_router_network = sg->sipx_network;
|
| 1641 |
|
|
memcpy(f.ipx_router_node, sg->sipx_node, IPX_NODE_LEN);
|
| 1642 |
|
|
ret = ipxrtr_create(&f);
|
| 1643 |
|
|
break;
|
| 1644 |
|
|
}
|
| 1645 |
|
|
}
|
| 1646 |
|
|
|
| 1647 |
|
|
out: return ret;
|
| 1648 |
|
|
}
|
| 1649 |
|
|
|
| 1650 |
|
|
static const char *ipx_frame_name(unsigned short frame)
|
| 1651 |
|
|
{
|
| 1652 |
|
|
char* ret = "None";
|
| 1653 |
|
|
|
| 1654 |
|
|
switch (ntohs(frame)) {
|
| 1655 |
|
|
case ETH_P_IPX: ret = "EtherII"; break;
|
| 1656 |
|
|
case ETH_P_802_2: ret = "802.2"; break;
|
| 1657 |
|
|
case ETH_P_SNAP: ret = "SNAP"; break;
|
| 1658 |
|
|
case ETH_P_802_3: ret = "802.3"; break;
|
| 1659 |
|
|
case ETH_P_TR_802_2: ret = "802.2TR"; break;
|
| 1660 |
|
|
}
|
| 1661 |
|
|
|
| 1662 |
|
|
return ret;
|
| 1663 |
|
|
}
|
| 1664 |
|
|
|
| 1665 |
|
|
static const char *ipx_device_name(ipx_interface *intrfc)
|
| 1666 |
|
|
{
|
| 1667 |
|
|
return intrfc->if_internal ? "Internal" :
|
| 1668 |
|
|
intrfc->if_dev ? intrfc->if_dev->name : "Unknown";
|
| 1669 |
|
|
}
|
| 1670 |
|
|
|
| 1671 |
|
|
/* Called from proc fs */
|
| 1672 |
|
|
static int ipx_interface_get_info(char *buffer, char **start, off_t offset,
|
| 1673 |
|
|
int length)
|
| 1674 |
|
|
{
|
| 1675 |
|
|
ipx_interface *i;
|
| 1676 |
|
|
off_t begin = 0, pos = 0;
|
| 1677 |
|
|
int len = 0;
|
| 1678 |
|
|
|
| 1679 |
|
|
/* Theory.. Keep printing in the same place until we pass offset */
|
| 1680 |
|
|
|
| 1681 |
|
|
len += sprintf(buffer, "%-11s%-15s%-9s%-11s%s", "Network",
|
| 1682 |
|
|
"Node_Address", "Primary", "Device", "Frame_Type");
|
| 1683 |
|
|
#ifdef IPX_REFCNT_DEBUG
|
| 1684 |
|
|
len += sprintf(buffer + len, " refcnt");
|
| 1685 |
|
|
#endif
|
| 1686 |
|
|
strcat(buffer + len++, "\n");
|
| 1687 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 1688 |
|
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
| 1689 |
|
|
len += sprintf(buffer + len, "%08lX ",
|
| 1690 |
|
|
(long unsigned int) ntohl(i->if_netnum));
|
| 1691 |
|
|
len += sprintf(buffer + len, "%02X%02X%02X%02X%02X%02X ",
|
| 1692 |
|
|
i->if_node[0], i->if_node[1], i->if_node[2],
|
| 1693 |
|
|
i->if_node[3], i->if_node[4], i->if_node[5]);
|
| 1694 |
|
|
len += sprintf(buffer + len, "%-9s", i == ipx_primary_net ?
|
| 1695 |
|
|
"Yes" : "No");
|
| 1696 |
|
|
len += sprintf(buffer + len, "%-11s", ipx_device_name(i));
|
| 1697 |
|
|
len += sprintf(buffer + len, "%-9s",
|
| 1698 |
|
|
ipx_frame_name(i->if_dlink_type));
|
| 1699 |
|
|
#ifdef IPX_REFCNT_DEBUG
|
| 1700 |
|
|
len += sprintf(buffer + len, "%6d", atomic_read(&i->refcnt));
|
| 1701 |
|
|
#endif
|
| 1702 |
|
|
strcat(buffer + len++, "\n");
|
| 1703 |
|
|
/* Are we still dumping unwanted data then discard the record */
|
| 1704 |
|
|
pos = begin + len;
|
| 1705 |
|
|
|
| 1706 |
|
|
if (pos < offset) {
|
| 1707 |
|
|
len = 0; /* Keep dumping into the buffer start */
|
| 1708 |
|
|
begin = pos;
|
| 1709 |
|
|
}
|
| 1710 |
|
|
if (pos > offset + length) /* We have dumped enough */
|
| 1711 |
|
|
break;
|
| 1712 |
|
|
}
|
| 1713 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 1714 |
|
|
|
| 1715 |
|
|
/* The data in question runs from begin to begin+len */
|
| 1716 |
|
|
*start = buffer + (offset - begin); /* Start of wanted data */
|
| 1717 |
|
|
len -= (offset - begin); /* Remove unwanted header data from length */
|
| 1718 |
|
|
if (len > length)
|
| 1719 |
|
|
len = length; /* Remove unwanted tail data from length */
|
| 1720 |
|
|
|
| 1721 |
|
|
return len;
|
| 1722 |
|
|
}
|
| 1723 |
|
|
|
| 1724 |
|
|
static int ipx_get_info(char *buffer, char **start, off_t offset, int length)
|
| 1725 |
|
|
{
|
| 1726 |
|
|
struct sock *s;
|
| 1727 |
|
|
ipx_interface *i;
|
| 1728 |
|
|
off_t begin = 0, pos = 0;
|
| 1729 |
|
|
int len = 0;
|
| 1730 |
|
|
|
| 1731 |
|
|
/* Theory.. Keep printing in the same place until we pass offset */
|
| 1732 |
|
|
|
| 1733 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 1734 |
|
|
len += sprintf(buffer, "%-28s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
| 1735 |
|
|
#else
|
| 1736 |
|
|
len += sprintf(buffer, "%-15s%-28s%-10s%-10s%-7s%s\n", "Local_Address",
|
| 1737 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 1738 |
|
|
"Remote_Address", "Tx_Queue", "Rx_Queue",
|
| 1739 |
|
|
"State", "Uid");
|
| 1740 |
|
|
|
| 1741 |
|
|
spin_lock_bh(&ipx_interfaces_lock);
|
| 1742 |
|
|
for (i = ipx_interfaces; i; i = i->if_next) {
|
| 1743 |
|
|
ipxitf_hold(i);
|
| 1744 |
|
|
spin_lock_bh(&i->if_sklist_lock);
|
| 1745 |
|
|
for (s = i->if_sklist; s; s = s->next) {
|
| 1746 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 1747 |
|
|
len += sprintf(buffer + len,
|
| 1748 |
|
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
| 1749 |
|
|
(unsigned long) htonl(s->protinfo.af_ipx.intrfc->if_netnum),
|
| 1750 |
|
|
s->protinfo.af_ipx.node[0],
|
| 1751 |
|
|
s->protinfo.af_ipx.node[1],
|
| 1752 |
|
|
s->protinfo.af_ipx.node[2],
|
| 1753 |
|
|
s->protinfo.af_ipx.node[3],
|
| 1754 |
|
|
s->protinfo.af_ipx.node[4],
|
| 1755 |
|
|
s->protinfo.af_ipx.node[5],
|
| 1756 |
|
|
htons(s->protinfo.af_ipx.port));
|
| 1757 |
|
|
#else
|
| 1758 |
|
|
len += sprintf(buffer + len, "%08lX:%04X ",
|
| 1759 |
|
|
(unsigned long) htonl(i->if_netnum),
|
| 1760 |
|
|
htons(s->protinfo.af_ipx.port));
|
| 1761 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 1762 |
|
|
if (s->state != TCP_ESTABLISHED)
|
| 1763 |
|
|
len += sprintf(buffer + len, "%-28s",
|
| 1764 |
|
|
"Not_Connected");
|
| 1765 |
|
|
else {
|
| 1766 |
|
|
len += sprintf(buffer + len,
|
| 1767 |
|
|
"%08lX:%02X%02X%02X%02X%02X%02X:%04X ",
|
| 1768 |
|
|
(unsigned long) htonl(s->protinfo.af_ipx.dest_addr.net),
|
| 1769 |
|
|
s->protinfo.af_ipx.dest_addr.node[0],
|
| 1770 |
|
|
s->protinfo.af_ipx.dest_addr.node[1],
|
| 1771 |
|
|
s->protinfo.af_ipx.dest_addr.node[2],
|
| 1772 |
|
|
s->protinfo.af_ipx.dest_addr.node[3],
|
| 1773 |
|
|
s->protinfo.af_ipx.dest_addr.node[4],
|
| 1774 |
|
|
s->protinfo.af_ipx.dest_addr.node[5],
|
| 1775 |
|
|
htons(s->protinfo.af_ipx.dest_addr.sock));
|
| 1776 |
|
|
}
|
| 1777 |
|
|
|
| 1778 |
|
|
len += sprintf(buffer + len, "%08X %08X ",
|
| 1779 |
|
|
atomic_read(&s->wmem_alloc),
|
| 1780 |
|
|
atomic_read(&s->rmem_alloc));
|
| 1781 |
|
|
len += sprintf(buffer + len, "%02X %03d\n",
|
| 1782 |
|
|
s->state, SOCK_INODE(s->socket)->i_uid);
|
| 1783 |
|
|
|
| 1784 |
|
|
pos = begin + len;
|
| 1785 |
|
|
if (pos < offset) {
|
| 1786 |
|
|
len = 0;
|
| 1787 |
|
|
begin = pos;
|
| 1788 |
|
|
}
|
| 1789 |
|
|
|
| 1790 |
|
|
if (pos > offset + length) /* We have dumped enough */
|
| 1791 |
|
|
break;
|
| 1792 |
|
|
}
|
| 1793 |
|
|
spin_unlock_bh(&i->if_sklist_lock);
|
| 1794 |
|
|
ipxitf_put(i);
|
| 1795 |
|
|
}
|
| 1796 |
|
|
spin_unlock_bh(&ipx_interfaces_lock);
|
| 1797 |
|
|
|
| 1798 |
|
|
/* The data in question runs from begin to begin+len */
|
| 1799 |
|
|
*start = buffer + offset - begin;
|
| 1800 |
|
|
len -= (offset - begin);
|
| 1801 |
|
|
if (len > length)
|
| 1802 |
|
|
len = length;
|
| 1803 |
|
|
|
| 1804 |
|
|
return len;
|
| 1805 |
|
|
}
|
| 1806 |
|
|
|
| 1807 |
|
|
static int ipx_rt_get_info(char *buffer, char **start, off_t offset, int length)
|
| 1808 |
|
|
{
|
| 1809 |
|
|
ipx_route *rt;
|
| 1810 |
|
|
off_t begin = 0, pos = 0;
|
| 1811 |
|
|
int len = 0;
|
| 1812 |
|
|
|
| 1813 |
|
|
len += sprintf(buffer, "%-11s%-13s%s\n",
|
| 1814 |
|
|
"Network", "Router_Net", "Router_Node");
|
| 1815 |
|
|
read_lock_bh(&ipx_routes_lock);
|
| 1816 |
|
|
for (rt = ipx_routes; rt; rt = rt->ir_next) {
|
| 1817 |
|
|
len += sprintf(buffer + len, "%08lX ",
|
| 1818 |
|
|
(long unsigned int) ntohl(rt->ir_net));
|
| 1819 |
|
|
if (rt->ir_routed) {
|
| 1820 |
|
|
len += sprintf(buffer + len,
|
| 1821 |
|
|
"%08lX %02X%02X%02X%02X%02X%02X\n",
|
| 1822 |
|
|
(long unsigned int) ntohl(rt->ir_intrfc->if_netnum),
|
| 1823 |
|
|
rt->ir_router_node[0], rt->ir_router_node[1],
|
| 1824 |
|
|
rt->ir_router_node[2], rt->ir_router_node[3],
|
| 1825 |
|
|
rt->ir_router_node[4], rt->ir_router_node[5]);
|
| 1826 |
|
|
} else {
|
| 1827 |
|
|
len += sprintf(buffer + len, "%-13s%s\n",
|
| 1828 |
|
|
"Directly", "Connected");
|
| 1829 |
|
|
}
|
| 1830 |
|
|
|
| 1831 |
|
|
pos = begin + len;
|
| 1832 |
|
|
if (pos < offset) {
|
| 1833 |
|
|
len = 0;
|
| 1834 |
|
|
begin = pos;
|
| 1835 |
|
|
}
|
| 1836 |
|
|
|
| 1837 |
|
|
if (pos > offset + length)
|
| 1838 |
|
|
break;
|
| 1839 |
|
|
}
|
| 1840 |
|
|
read_unlock_bh(&ipx_routes_lock);
|
| 1841 |
|
|
|
| 1842 |
|
|
*start = buffer + (offset - begin);
|
| 1843 |
|
|
len -= (offset - begin);
|
| 1844 |
|
|
if (len > length)
|
| 1845 |
|
|
len = length;
|
| 1846 |
|
|
|
| 1847 |
|
|
return len;
|
| 1848 |
|
|
}
|
| 1849 |
|
|
|
| 1850 |
|
|
/* Handling for system calls applied via the various interfaces to an IPX
|
| 1851 |
|
|
* socket object. */
|
| 1852 |
|
|
|
| 1853 |
|
|
static int ipx_setsockopt(struct socket *sock, int level, int optname,
|
| 1854 |
|
|
char *optval, int optlen)
|
| 1855 |
|
|
{
|
| 1856 |
|
|
struct sock *sk = sock->sk;
|
| 1857 |
|
|
int opt;
|
| 1858 |
|
|
int ret = -EINVAL;
|
| 1859 |
|
|
|
| 1860 |
|
|
if (optlen != sizeof(int))
|
| 1861 |
|
|
goto out;
|
| 1862 |
|
|
|
| 1863 |
|
|
ret = -EFAULT;
|
| 1864 |
|
|
if (get_user(opt, (unsigned int *)optval))
|
| 1865 |
|
|
goto out;
|
| 1866 |
|
|
|
| 1867 |
|
|
ret = -ENOPROTOOPT;
|
| 1868 |
|
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
| 1869 |
|
|
goto out;
|
| 1870 |
|
|
|
| 1871 |
|
|
sk->protinfo.af_ipx.type = opt;
|
| 1872 |
|
|
ret = 0;
|
| 1873 |
|
|
out: return ret;
|
| 1874 |
|
|
}
|
| 1875 |
|
|
|
| 1876 |
|
|
static int ipx_getsockopt(struct socket *sock, int level, int optname,
|
| 1877 |
|
|
char *optval, int *optlen)
|
| 1878 |
|
|
{
|
| 1879 |
|
|
struct sock *sk = sock->sk;
|
| 1880 |
|
|
int val = 0;
|
| 1881 |
|
|
int len;
|
| 1882 |
|
|
int ret = -ENOPROTOOPT;
|
| 1883 |
|
|
|
| 1884 |
|
|
if (!(level == SOL_IPX && optname == IPX_TYPE))
|
| 1885 |
|
|
goto out;
|
| 1886 |
|
|
|
| 1887 |
|
|
val = sk->protinfo.af_ipx.type;
|
| 1888 |
|
|
|
| 1889 |
|
|
ret = -EFAULT;
|
| 1890 |
|
|
if (get_user(len, optlen))
|
| 1891 |
|
|
goto out;
|
| 1892 |
|
|
|
| 1893 |
|
|
len = min_t(unsigned int, len, sizeof(int));
|
| 1894 |
|
|
ret = -EINVAL;
|
| 1895 |
|
|
if(len < 0)
|
| 1896 |
|
|
goto out;
|
| 1897 |
|
|
|
| 1898 |
|
|
ret = -EFAULT;
|
| 1899 |
|
|
if (put_user(len, optlen) || copy_to_user(optval, &val, len))
|
| 1900 |
|
|
goto out;
|
| 1901 |
|
|
|
| 1902 |
|
|
ret = 0;
|
| 1903 |
|
|
out: return ret;
|
| 1904 |
|
|
}
|
| 1905 |
|
|
|
| 1906 |
|
|
static int ipx_create(struct socket *sock, int protocol)
|
| 1907 |
|
|
{
|
| 1908 |
|
|
int ret = -ESOCKTNOSUPPORT;
|
| 1909 |
|
|
struct sock *sk;
|
| 1910 |
|
|
|
| 1911 |
|
|
switch (sock->type) {
|
| 1912 |
|
|
case SOCK_DGRAM:
|
| 1913 |
|
|
sk = sk_alloc(PF_IPX, GFP_KERNEL, 1);
|
| 1914 |
|
|
ret = -ENOMEM;
|
| 1915 |
|
|
if (!sk)
|
| 1916 |
|
|
goto out;
|
| 1917 |
|
|
sock->ops = &ipx_dgram_ops;
|
| 1918 |
|
|
break;
|
| 1919 |
|
|
|
| 1920 |
|
|
case SOCK_SEQPACKET:
|
| 1921 |
|
|
/*
|
| 1922 |
|
|
* From this point on SPX sockets are handled
|
| 1923 |
|
|
* by af_spx.c and the methods replaced.
|
| 1924 |
|
|
*/
|
| 1925 |
|
|
if (spx_family_ops) {
|
| 1926 |
|
|
ret = spx_family_ops->create(sock, protocol);
|
| 1927 |
|
|
goto out;
|
| 1928 |
|
|
}
|
| 1929 |
|
|
/* Fall through if SPX is not loaded */
|
| 1930 |
|
|
case SOCK_STREAM: /* Allow higher levels to piggyback */
|
| 1931 |
|
|
default:
|
| 1932 |
|
|
goto out;
|
| 1933 |
|
|
}
|
| 1934 |
|
|
#ifdef IPX_REFCNT_DEBUG
|
| 1935 |
|
|
atomic_inc(&ipx_sock_nr);
|
| 1936 |
|
|
printk(KERN_DEBUG "IPX socket %p created, now we have %d alive\n", sk,
|
| 1937 |
|
|
atomic_read(&ipx_sock_nr));
|
| 1938 |
|
|
#endif
|
| 1939 |
|
|
sock_init_data(sock, sk);
|
| 1940 |
|
|
sk->destruct = NULL;
|
| 1941 |
|
|
sk->no_check = 1; /* Checksum off by default */
|
| 1942 |
|
|
|
| 1943 |
|
|
MOD_INC_USE_COUNT;
|
| 1944 |
|
|
ret = 0;
|
| 1945 |
|
|
out: return ret;
|
| 1946 |
|
|
}
|
| 1947 |
|
|
|
| 1948 |
|
|
static int ipx_release(struct socket *sock)
|
| 1949 |
|
|
{
|
| 1950 |
|
|
struct sock *sk = sock->sk;
|
| 1951 |
|
|
|
| 1952 |
|
|
if (!sk)
|
| 1953 |
|
|
goto out;
|
| 1954 |
|
|
|
| 1955 |
|
|
if (!sk->dead)
|
| 1956 |
|
|
sk->state_change(sk);
|
| 1957 |
|
|
|
| 1958 |
|
|
sk->dead = 1;
|
| 1959 |
|
|
sock->sk = NULL;
|
| 1960 |
|
|
ipx_destroy_socket(sk);
|
| 1961 |
|
|
|
| 1962 |
|
|
if (sock->type == SOCK_DGRAM)
|
| 1963 |
|
|
MOD_DEC_USE_COUNT;
|
| 1964 |
|
|
|
| 1965 |
|
|
out: return 0;
|
| 1966 |
|
|
}
|
| 1967 |
|
|
|
| 1968 |
|
|
/* caller must hold a reference to intrfc */
|
| 1969 |
|
|
|
| 1970 |
|
|
static unsigned short ipx_first_free_socketnum(ipx_interface *intrfc)
|
| 1971 |
|
|
{
|
| 1972 |
|
|
unsigned short socketNum = intrfc->if_sknum;
|
| 1973 |
|
|
|
| 1974 |
|
|
spin_lock_bh(&intrfc->if_sklist_lock);
|
| 1975 |
|
|
|
| 1976 |
|
|
if (socketNum < IPX_MIN_EPHEMERAL_SOCKET)
|
| 1977 |
|
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
| 1978 |
|
|
|
| 1979 |
|
|
while (__ipxitf_find_socket(intrfc, ntohs(socketNum)))
|
| 1980 |
|
|
if (socketNum > IPX_MAX_EPHEMERAL_SOCKET)
|
| 1981 |
|
|
socketNum = IPX_MIN_EPHEMERAL_SOCKET;
|
| 1982 |
|
|
else
|
| 1983 |
|
|
socketNum++;
|
| 1984 |
|
|
|
| 1985 |
|
|
spin_unlock_bh(&intrfc->if_sklist_lock);
|
| 1986 |
|
|
intrfc->if_sknum = socketNum;
|
| 1987 |
|
|
|
| 1988 |
|
|
return ntohs(socketNum);
|
| 1989 |
|
|
}
|
| 1990 |
|
|
|
| 1991 |
|
|
static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
|
| 1992 |
|
|
{
|
| 1993 |
|
|
struct sock *sk = sock->sk;
|
| 1994 |
|
|
ipx_interface *intrfc;
|
| 1995 |
|
|
struct sockaddr_ipx *addr = (struct sockaddr_ipx *)uaddr;
|
| 1996 |
|
|
int ret = -EINVAL;
|
| 1997 |
|
|
|
| 1998 |
|
|
if (!sk->zapped || addr_len != sizeof(struct sockaddr_ipx))
|
| 1999 |
|
|
goto out;
|
| 2000 |
|
|
|
| 2001 |
|
|
intrfc = ipxitf_find_using_net(addr->sipx_network);
|
| 2002 |
|
|
ret = -EADDRNOTAVAIL;
|
| 2003 |
|
|
if (!intrfc)
|
| 2004 |
|
|
goto out;
|
| 2005 |
|
|
|
| 2006 |
|
|
if (!addr->sipx_port) {
|
| 2007 |
|
|
addr->sipx_port = ipx_first_free_socketnum(intrfc);
|
| 2008 |
|
|
ret = -EINVAL;
|
| 2009 |
|
|
if (!addr->sipx_port)
|
| 2010 |
|
|
goto out_put;
|
| 2011 |
|
|
}
|
| 2012 |
|
|
|
| 2013 |
|
|
/* protect IPX system stuff like routing/sap */
|
| 2014 |
|
|
ret = -EACCES;
|
| 2015 |
|
|
if (ntohs(addr->sipx_port) < IPX_MIN_EPHEMERAL_SOCKET &&
|
| 2016 |
|
|
!capable(CAP_NET_ADMIN))
|
| 2017 |
|
|
goto out_put;
|
| 2018 |
|
|
|
| 2019 |
|
|
sk->protinfo.af_ipx.port = addr->sipx_port;
|
| 2020 |
|
|
|
| 2021 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 2022 |
|
|
if (intrfc == ipx_internal_net) {
|
| 2023 |
|
|
/* The source address is to be set explicitly if the
|
| 2024 |
|
|
* socket is to be bound on the internal network. If a
|
| 2025 |
|
|
* node number 0 was specified, the default is used.
|
| 2026 |
|
|
*/
|
| 2027 |
|
|
|
| 2028 |
|
|
ret = -EINVAL;
|
| 2029 |
|
|
if (!memcmp(addr->sipx_node, ipx_broadcast_node, IPX_NODE_LEN))
|
| 2030 |
|
|
goto out_put;
|
| 2031 |
|
|
if (!memcmp(addr->sipx_node, ipx_this_node, IPX_NODE_LEN))
|
| 2032 |
|
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
| 2033 |
|
|
IPX_NODE_LEN);
|
| 2034 |
|
|
else
|
| 2035 |
|
|
memcpy(sk->protinfo.af_ipx.node, addr->sipx_node,
|
| 2036 |
|
|
IPX_NODE_LEN);
|
| 2037 |
|
|
|
| 2038 |
|
|
ret = -EADDRINUSE;
|
| 2039 |
|
|
if (ipxitf_find_internal_socket(intrfc,
|
| 2040 |
|
|
sk->protinfo.af_ipx.node,
|
| 2041 |
|
|
sk->protinfo.af_ipx.port)) {
|
| 2042 |
|
|
SOCK_DEBUG(sk,
|
| 2043 |
|
|
"IPX: bind failed because port %X in use.\n",
|
| 2044 |
|
|
ntohs((int)addr->sipx_port));
|
| 2045 |
|
|
goto out_put;
|
| 2046 |
|
|
}
|
| 2047 |
|
|
} else {
|
| 2048 |
|
|
/* Source addresses are easy. It must be our
|
| 2049 |
|
|
* network:node pair for an interface routed to IPX
|
| 2050 |
|
|
* with the ipx routing ioctl()
|
| 2051 |
|
|
*/
|
| 2052 |
|
|
|
| 2053 |
|
|
memcpy(sk->protinfo.af_ipx.node, intrfc->if_node,
|
| 2054 |
|
|
IPX_NODE_LEN);
|
| 2055 |
|
|
|
| 2056 |
|
|
ret = -EADDRINUSE;
|
| 2057 |
|
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
| 2058 |
|
|
SOCK_DEBUG(sk,
|
| 2059 |
|
|
"IPX: bind failed because port %X in use.\n",
|
| 2060 |
|
|
ntohs((int)addr->sipx_port));
|
| 2061 |
|
|
goto out_put;
|
| 2062 |
|
|
}
|
| 2063 |
|
|
}
|
| 2064 |
|
|
|
| 2065 |
|
|
#else /* !def CONFIG_IPX_INTERN */
|
| 2066 |
|
|
|
| 2067 |
|
|
/* Source addresses are easy. It must be our network:node pair for
|
| 2068 |
|
|
an interface routed to IPX with the ipx routing ioctl() */
|
| 2069 |
|
|
|
| 2070 |
|
|
ret = -EADDRINUSE;
|
| 2071 |
|
|
if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
|
| 2072 |
|
|
SOCK_DEBUG(sk, "IPX: bind failed because port %X in use.\n",
|
| 2073 |
|
|
ntohs((int)addr->sipx_port));
|
| 2074 |
|
|
goto out_put;
|
| 2075 |
|
|
}
|
| 2076 |
|
|
|
| 2077 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 2078 |
|
|
|
| 2079 |
|
|
ipxitf_insert_socket(intrfc, sk);
|
| 2080 |
|
|
sk->zapped = 0;
|
| 2081 |
|
|
SOCK_DEBUG(sk, "IPX: bound socket 0x%04X.\n", ntohs(addr->sipx_port) );
|
| 2082 |
|
|
|
| 2083 |
|
|
ret = 0;
|
| 2084 |
|
|
out_put:
|
| 2085 |
|
|
ipxitf_put(intrfc);
|
| 2086 |
|
|
out: return ret;
|
| 2087 |
|
|
}
|
| 2088 |
|
|
|
| 2089 |
|
|
static int ipx_connect(struct socket *sock, struct sockaddr *uaddr,
|
| 2090 |
|
|
int addr_len, int flags)
|
| 2091 |
|
|
{
|
| 2092 |
|
|
struct sock *sk = sock->sk;
|
| 2093 |
|
|
struct sockaddr_ipx *addr;
|
| 2094 |
|
|
int ret = -EINVAL;
|
| 2095 |
|
|
ipx_route *rt;
|
| 2096 |
|
|
|
| 2097 |
|
|
sk->state = TCP_CLOSE;
|
| 2098 |
|
|
sock->state = SS_UNCONNECTED;
|
| 2099 |
|
|
|
| 2100 |
|
|
if (addr_len != sizeof(*addr))
|
| 2101 |
|
|
goto out;
|
| 2102 |
|
|
addr = (struct sockaddr_ipx *)uaddr;
|
| 2103 |
|
|
|
| 2104 |
|
|
/* put the autobinding in */
|
| 2105 |
|
|
if (!sk->protinfo.af_ipx.port) {
|
| 2106 |
|
|
struct sockaddr_ipx uaddr;
|
| 2107 |
|
|
|
| 2108 |
|
|
uaddr.sipx_port = 0;
|
| 2109 |
|
|
uaddr.sipx_network = 0;
|
| 2110 |
|
|
|
| 2111 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 2112 |
|
|
ret = -ENETDOWN;
|
| 2113 |
|
|
if (!sk->protinfo.af_ipx.intrfc)
|
| 2114 |
|
|
goto out; /* Someone zonked the iface */
|
| 2115 |
|
|
memcpy(uaddr.sipx_node, sk->protinfo.af_ipx.intrfc->if_node,
|
| 2116 |
|
|
IPX_NODE_LEN);
|
| 2117 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 2118 |
|
|
|
| 2119 |
|
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
| 2120 |
|
|
sizeof(struct sockaddr_ipx));
|
| 2121 |
|
|
if (ret)
|
| 2122 |
|
|
goto out;
|
| 2123 |
|
|
}
|
| 2124 |
|
|
|
| 2125 |
|
|
/* We can either connect to primary network or somewhere
|
| 2126 |
|
|
* we can route to */
|
| 2127 |
|
|
rt = ipxrtr_lookup(addr->sipx_network);
|
| 2128 |
|
|
ret = -ENETUNREACH;
|
| 2129 |
|
|
if (!rt && !(!addr->sipx_network && ipx_primary_net))
|
| 2130 |
|
|
goto out;
|
| 2131 |
|
|
|
| 2132 |
|
|
sk->protinfo.af_ipx.dest_addr.net = addr->sipx_network;
|
| 2133 |
|
|
sk->protinfo.af_ipx.dest_addr.sock = addr->sipx_port;
|
| 2134 |
|
|
memcpy(sk->protinfo.af_ipx.dest_addr.node,
|
| 2135 |
|
|
addr->sipx_node, IPX_NODE_LEN);
|
| 2136 |
|
|
sk->protinfo.af_ipx.type = addr->sipx_type;
|
| 2137 |
|
|
|
| 2138 |
|
|
if (sock->type == SOCK_DGRAM) {
|
| 2139 |
|
|
sock->state = SS_CONNECTED;
|
| 2140 |
|
|
sk->state = TCP_ESTABLISHED;
|
| 2141 |
|
|
}
|
| 2142 |
|
|
|
| 2143 |
|
|
if (rt)
|
| 2144 |
|
|
ipxrtr_put(rt);
|
| 2145 |
|
|
ret = 0;
|
| 2146 |
|
|
out: return ret;
|
| 2147 |
|
|
}
|
| 2148 |
|
|
|
| 2149 |
|
|
|
| 2150 |
|
|
static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
|
| 2151 |
|
|
int *uaddr_len, int peer)
|
| 2152 |
|
|
{
|
| 2153 |
|
|
ipx_address *addr;
|
| 2154 |
|
|
struct sockaddr_ipx sipx;
|
| 2155 |
|
|
struct sock *sk = sock->sk;
|
| 2156 |
|
|
int ret;
|
| 2157 |
|
|
|
| 2158 |
|
|
*uaddr_len = sizeof(struct sockaddr_ipx);
|
| 2159 |
|
|
|
| 2160 |
|
|
if (peer) {
|
| 2161 |
|
|
ret = -ENOTCONN;
|
| 2162 |
|
|
if (sk->state != TCP_ESTABLISHED)
|
| 2163 |
|
|
goto out;
|
| 2164 |
|
|
|
| 2165 |
|
|
addr = &sk->protinfo.af_ipx.dest_addr;
|
| 2166 |
|
|
sipx.sipx_network = addr->net;
|
| 2167 |
|
|
sipx.sipx_port = addr->sock;
|
| 2168 |
|
|
memcpy(sipx.sipx_node, addr->node, IPX_NODE_LEN);
|
| 2169 |
|
|
} else {
|
| 2170 |
|
|
if (sk->protinfo.af_ipx.intrfc) {
|
| 2171 |
|
|
sipx.sipx_network =
|
| 2172 |
|
|
sk->protinfo.af_ipx.intrfc->if_netnum;
|
| 2173 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 2174 |
|
|
memcpy(sipx.sipx_node, sk->protinfo.af_ipx.node,
|
| 2175 |
|
|
IPX_NODE_LEN);
|
| 2176 |
|
|
#else
|
| 2177 |
|
|
memcpy(sipx.sipx_node,
|
| 2178 |
|
|
sk->protinfo.af_ipx.intrfc->if_node,
|
| 2179 |
|
|
IPX_NODE_LEN);
|
| 2180 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 2181 |
|
|
|
| 2182 |
|
|
} else {
|
| 2183 |
|
|
sipx.sipx_network = 0;
|
| 2184 |
|
|
memset(sipx.sipx_node, '\0', IPX_NODE_LEN);
|
| 2185 |
|
|
}
|
| 2186 |
|
|
|
| 2187 |
|
|
sipx.sipx_port = sk->protinfo.af_ipx.port;
|
| 2188 |
|
|
}
|
| 2189 |
|
|
|
| 2190 |
|
|
sipx.sipx_family = AF_IPX;
|
| 2191 |
|
|
sipx.sipx_type = sk->protinfo.af_ipx.type;
|
| 2192 |
|
|
memcpy(uaddr, &sipx, sizeof(sipx));
|
| 2193 |
|
|
|
| 2194 |
|
|
ret = 0;
|
| 2195 |
|
|
out: return ret;
|
| 2196 |
|
|
}
|
| 2197 |
|
|
|
| 2198 |
|
|
int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt)
|
| 2199 |
|
|
{
|
| 2200 |
|
|
/* NULL here for pt means the packet was looped back */
|
| 2201 |
|
|
ipx_interface *intrfc;
|
| 2202 |
|
|
struct ipxhdr *ipx;
|
| 2203 |
|
|
u16 ipx_pktsize;
|
| 2204 |
|
|
int ret = 0;
|
| 2205 |
|
|
|
| 2206 |
|
|
/* Not ours */
|
| 2207 |
|
|
if (skb->pkt_type == PACKET_OTHERHOST)
|
| 2208 |
|
|
goto drop;
|
| 2209 |
|
|
|
| 2210 |
|
|
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
|
| 2211 |
|
|
goto out;
|
| 2212 |
|
|
|
| 2213 |
|
|
ipx = skb->nh.ipxh;
|
| 2214 |
|
|
ipx_pktsize = ntohs(ipx->ipx_pktsize);
|
| 2215 |
|
|
|
| 2216 |
|
|
/* Too small or invalid header? */
|
| 2217 |
|
|
if (ipx_pktsize < sizeof(struct ipxhdr) || ipx_pktsize > skb->len)
|
| 2218 |
|
|
goto drop;
|
| 2219 |
|
|
|
| 2220 |
|
|
if (ipx->ipx_checksum != IPX_NO_CHECKSUM &&
|
| 2221 |
|
|
ipx->ipx_checksum != ipx_cksum(ipx, ipx_pktsize))
|
| 2222 |
|
|
goto drop;
|
| 2223 |
|
|
|
| 2224 |
|
|
IPX_SKB_CB(skb)->ipx_tctrl = ipx->ipx_tctrl;
|
| 2225 |
|
|
IPX_SKB_CB(skb)->ipx_dest_net = ipx->ipx_dest.net;
|
| 2226 |
|
|
IPX_SKB_CB(skb)->ipx_source_net = ipx->ipx_source.net;
|
| 2227 |
|
|
|
| 2228 |
|
|
/* Determine what local ipx endpoint this is */
|
| 2229 |
|
|
intrfc = ipxitf_find_using_phys(dev, pt->type);
|
| 2230 |
|
|
if (!intrfc) {
|
| 2231 |
|
|
if (ipxcfg_auto_create_interfaces &&
|
| 2232 |
|
|
ntohl(IPX_SKB_CB(skb)->ipx_dest_net)) {
|
| 2233 |
|
|
intrfc = ipxitf_auto_create(dev, pt->type);
|
| 2234 |
|
|
if (intrfc)
|
| 2235 |
|
|
ipxitf_hold(intrfc);
|
| 2236 |
|
|
}
|
| 2237 |
|
|
|
| 2238 |
|
|
if (!intrfc) /* Not one of ours */
|
| 2239 |
|
|
/* or invalid packet for auto creation */
|
| 2240 |
|
|
goto drop;
|
| 2241 |
|
|
}
|
| 2242 |
|
|
|
| 2243 |
|
|
ret = ipxitf_rcv(intrfc, skb);
|
| 2244 |
|
|
ipxitf_put(intrfc);
|
| 2245 |
|
|
goto out;
|
| 2246 |
|
|
drop: kfree_skb(skb);
|
| 2247 |
|
|
out: return ret;
|
| 2248 |
|
|
}
|
| 2249 |
|
|
|
| 2250 |
|
|
static int ipx_sendmsg(struct socket *sock, struct msghdr *msg, int len,
|
| 2251 |
|
|
struct scm_cookie *scm)
|
| 2252 |
|
|
{
|
| 2253 |
|
|
struct sock *sk = sock->sk;
|
| 2254 |
|
|
struct sockaddr_ipx *usipx = (struct sockaddr_ipx *)msg->msg_name;
|
| 2255 |
|
|
struct sockaddr_ipx local_sipx;
|
| 2256 |
|
|
int ret = -EINVAL;
|
| 2257 |
|
|
int flags = msg->msg_flags;
|
| 2258 |
|
|
|
| 2259 |
|
|
/* Socket gets bound below anyway */
|
| 2260 |
|
|
/* if (sk->zapped)
|
| 2261 |
|
|
return -EIO; */ /* Socket not bound */
|
| 2262 |
|
|
if (flags & ~MSG_DONTWAIT)
|
| 2263 |
|
|
goto out;
|
| 2264 |
|
|
|
| 2265 |
|
|
if (usipx) {
|
| 2266 |
|
|
if (!sk->protinfo.af_ipx.port) {
|
| 2267 |
|
|
struct sockaddr_ipx uaddr;
|
| 2268 |
|
|
|
| 2269 |
|
|
uaddr.sipx_port = 0;
|
| 2270 |
|
|
uaddr.sipx_network = 0;
|
| 2271 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 2272 |
|
|
ret = -ENETDOWN;
|
| 2273 |
|
|
if (!sk->protinfo.af_ipx.intrfc)
|
| 2274 |
|
|
goto out; /* Someone zonked the iface */
|
| 2275 |
|
|
memcpy(uaddr.sipx_node,
|
| 2276 |
|
|
sk->protinfo.af_ipx.intrfc->if_node,
|
| 2277 |
|
|
IPX_NODE_LEN);
|
| 2278 |
|
|
#endif
|
| 2279 |
|
|
ret = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
| 2280 |
|
|
sizeof(struct sockaddr_ipx));
|
| 2281 |
|
|
if (ret)
|
| 2282 |
|
|
goto out;
|
| 2283 |
|
|
}
|
| 2284 |
|
|
|
| 2285 |
|
|
ret = -EINVAL;
|
| 2286 |
|
|
if (msg->msg_namelen < sizeof(*usipx) ||
|
| 2287 |
|
|
usipx->sipx_family != AF_IPX)
|
| 2288 |
|
|
goto out;
|
| 2289 |
|
|
} else {
|
| 2290 |
|
|
ret = -ENOTCONN;
|
| 2291 |
|
|
if (sk->state != TCP_ESTABLISHED)
|
| 2292 |
|
|
goto out;
|
| 2293 |
|
|
|
| 2294 |
|
|
usipx = &local_sipx;
|
| 2295 |
|
|
usipx->sipx_family = AF_IPX;
|
| 2296 |
|
|
usipx->sipx_type = sk->protinfo.af_ipx.type;
|
| 2297 |
|
|
usipx->sipx_port = sk->protinfo.af_ipx.dest_addr.sock;
|
| 2298 |
|
|
usipx->sipx_network = sk->protinfo.af_ipx.dest_addr.net;
|
| 2299 |
|
|
memcpy(usipx->sipx_node, sk->protinfo.af_ipx.dest_addr.node,
|
| 2300 |
|
|
IPX_NODE_LEN);
|
| 2301 |
|
|
}
|
| 2302 |
|
|
|
| 2303 |
|
|
ret = ipxrtr_route_packet(sk, usipx, msg->msg_iov, len,
|
| 2304 |
|
|
flags & MSG_DONTWAIT);
|
| 2305 |
|
|
if (ret >= 0)
|
| 2306 |
|
|
ret = len;
|
| 2307 |
|
|
out: return ret;
|
| 2308 |
|
|
}
|
| 2309 |
|
|
|
| 2310 |
|
|
|
| 2311 |
|
|
static int ipx_recvmsg(struct socket *sock, struct msghdr *msg, int size,
|
| 2312 |
|
|
int flags, struct scm_cookie *scm)
|
| 2313 |
|
|
{
|
| 2314 |
|
|
struct sock *sk = sock->sk;
|
| 2315 |
|
|
struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)msg->msg_name;
|
| 2316 |
|
|
struct ipxhdr *ipx = NULL;
|
| 2317 |
|
|
struct sk_buff *skb;
|
| 2318 |
|
|
int copied, err;
|
| 2319 |
|
|
|
| 2320 |
|
|
/* put the autobinding in */
|
| 2321 |
|
|
if (!sk->protinfo.af_ipx.port) {
|
| 2322 |
|
|
struct sockaddr_ipx uaddr;
|
| 2323 |
|
|
|
| 2324 |
|
|
uaddr.sipx_port = 0;
|
| 2325 |
|
|
uaddr.sipx_network = 0;
|
| 2326 |
|
|
|
| 2327 |
|
|
#ifdef CONFIG_IPX_INTERN
|
| 2328 |
|
|
err = -ENETDOWN;
|
| 2329 |
|
|
if (!sk->protinfo.af_ipx.intrfc)
|
| 2330 |
|
|
goto out; /* Someone zonked the iface */
|
| 2331 |
|
|
memcpy(uaddr.sipx_node,
|
| 2332 |
|
|
sk->protinfo.af_ipx.intrfc->if_node, IPX_NODE_LEN);
|
| 2333 |
|
|
#endif /* CONFIG_IPX_INTERN */
|
| 2334 |
|
|
|
| 2335 |
|
|
err = ipx_bind(sock, (struct sockaddr *)&uaddr,
|
| 2336 |
|
|
sizeof(struct sockaddr_ipx));
|
| 2337 |
|
|
if (err)
|
| 2338 |
|
|
goto out;
|
| 2339 |
|
|
}
|
| 2340 |
|
|
|
| 2341 |
|
|
err = -ENOTCONN;
|
| 2342 |
|
|
if (sk->zapped)
|
| 2343 |
|
|
goto out;
|
| 2344 |
|
|
|
| 2345 |
|
|
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
|
| 2346 |
|
|
flags & MSG_DONTWAIT, &err);
|
| 2347 |
|
|
if (!skb)
|
| 2348 |
|
|
goto out;
|
| 2349 |
|
|
|
| 2350 |
|
|
ipx = skb->nh.ipxh;
|
| 2351 |
|
|
copied = ntohs(ipx->ipx_pktsize) - sizeof(struct ipxhdr);
|
| 2352 |
|
|
if (copied > size) {
|
| 2353 |
|
|
copied = size;
|
| 2354 |
|
|
msg->msg_flags |= MSG_TRUNC;
|
| 2355 |
|
|
}
|
| 2356 |
|
|
|
| 2357 |
|
|
err = skb_copy_datagram_iovec(skb, sizeof(struct ipxhdr), msg->msg_iov,
|
| 2358 |
|
|
copied);
|
| 2359 |
|
|
if (err)
|
| 2360 |
|
|
goto out_free;
|
| 2361 |
|
|
sk->stamp = skb->stamp;
|
| 2362 |
|
|
|
| 2363 |
|
|
msg->msg_namelen = sizeof(*sipx);
|
| 2364 |
|
|
|
| 2365 |
|
|
if (sipx) {
|
| 2366 |
|
|
sipx->sipx_family = AF_IPX;
|
| 2367 |
|
|
sipx->sipx_port = ipx->ipx_source.sock;
|
| 2368 |
|
|
memcpy(sipx->sipx_node, ipx->ipx_source.node, IPX_NODE_LEN);
|
| 2369 |
|
|
sipx->sipx_network = IPX_SKB_CB(skb)->ipx_source_net;
|
| 2370 |
|
|
sipx->sipx_type = ipx->ipx_type;
|
| 2371 |
|
|
}
|
| 2372 |
|
|
err = copied;
|
| 2373 |
|
|
|
| 2374 |
|
|
out_free:
|
| 2375 |
|
|
skb_free_datagram(sk, skb);
|
| 2376 |
|
|
out: return err;
|
| 2377 |
|
|
}
|
| 2378 |
|
|
|
| 2379 |
|
|
|
| 2380 |
|
|
static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
| 2381 |
|
|
{
|
| 2382 |
|
|
long amount = 0;
|
| 2383 |
|
|
struct sock *sk = sock->sk;
|
| 2384 |
|
|
|
| 2385 |
|
|
switch (cmd) {
|
| 2386 |
|
|
case TIOCOUTQ:
|
| 2387 |
|
|
amount = sk->sndbuf - atomic_read(&sk->wmem_alloc);
|
| 2388 |
|
|
if (amount < 0)
|
| 2389 |
|
|
amount = 0;
|
| 2390 |
|
|
return put_user(amount, (int *)arg);
|
| 2391 |
|
|
|
| 2392 |
|
|
case TIOCINQ: {
|
| 2393 |
|
|
struct sk_buff *skb = skb_peek(&sk->receive_queue);
|
| 2394 |
|
|
/* These two are safe on a single CPU system as only
|
| 2395 |
|
|
* user tasks fiddle here */
|
| 2396 |
|
|
if (skb)
|
| 2397 |
|
|
amount = skb->len - sizeof(struct ipxhdr);
|
| 2398 |
|
|
return put_user(amount, (int *)arg);
|
| 2399 |
|
|
}
|
| 2400 |
|
|
|
| 2401 |
|
|
case SIOCADDRT:
|
| 2402 |
|
|
case SIOCDELRT:
|
| 2403 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2404 |
|
|
return -EPERM;
|
| 2405 |
|
|
return ipxrtr_ioctl(cmd, (void *)arg);
|
| 2406 |
|
|
|
| 2407 |
|
|
case SIOCSIFADDR:
|
| 2408 |
|
|
case SIOCAIPXITFCRT:
|
| 2409 |
|
|
case SIOCAIPXPRISLT:
|
| 2410 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2411 |
|
|
return -EPERM;
|
| 2412 |
|
|
|
| 2413 |
|
|
case SIOCGIFADDR:
|
| 2414 |
|
|
return ipxitf_ioctl(cmd, (void *)arg);
|
| 2415 |
|
|
|
| 2416 |
|
|
case SIOCIPXCFGDATA:
|
| 2417 |
|
|
return ipxcfg_get_config_data((void *)arg);
|
| 2418 |
|
|
|
| 2419 |
|
|
case SIOCIPXNCPCONN:
|
| 2420 |
|
|
/*
|
| 2421 |
|
|
* This socket wants to take care of the NCP connection
|
| 2422 |
|
|
* handed to us in arg.
|
| 2423 |
|
|
*/
|
| 2424 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2425 |
|
|
return -EPERM;
|
| 2426 |
|
|
return get_user(sk->protinfo.af_ipx.ipx_ncp_conn,
|
| 2427 |
|
|
(const unsigned short *)(arg));
|
| 2428 |
|
|
|
| 2429 |
|
|
case SIOCGSTAMP: {
|
| 2430 |
|
|
int ret = -EINVAL;
|
| 2431 |
|
|
if (sk) {
|
| 2432 |
|
|
if (!sk->stamp.tv_sec)
|
| 2433 |
|
|
return -ENOENT;
|
| 2434 |
|
|
ret = -EFAULT;
|
| 2435 |
|
|
if (!copy_to_user((void *)arg, &sk->stamp,
|
| 2436 |
|
|
sizeof(struct timeval)))
|
| 2437 |
|
|
ret = 0;
|
| 2438 |
|
|
}
|
| 2439 |
|
|
|
| 2440 |
|
|
return ret;
|
| 2441 |
|
|
}
|
| 2442 |
|
|
|
| 2443 |
|
|
case SIOCGIFDSTADDR:
|
| 2444 |
|
|
case SIOCSIFDSTADDR:
|
| 2445 |
|
|
case SIOCGIFBRDADDR:
|
| 2446 |
|
|
case SIOCSIFBRDADDR:
|
| 2447 |
|
|
case SIOCGIFNETMASK:
|
| 2448 |
|
|
case SIOCSIFNETMASK:
|
| 2449 |
|
|
return -EINVAL;
|
| 2450 |
|
|
|
| 2451 |
|
|
default:
|
| 2452 |
|
|
return dev_ioctl(cmd,(void *) arg);
|
| 2453 |
|
|
}
|
| 2454 |
|
|
|
| 2455 |
|
|
/*NOT REACHED*/
|
| 2456 |
|
|
return 0;
|
| 2457 |
|
|
}
|
| 2458 |
|
|
|
| 2459 |
|
|
/*
|
| 2460 |
|
|
* SPX interface support
|
| 2461 |
|
|
*/
|
| 2462 |
|
|
|
| 2463 |
|
|
int ipx_register_spx(struct proto_ops **p, struct net_proto_family *spx)
|
| 2464 |
|
|
{
|
| 2465 |
|
|
if (spx_family_ops)
|
| 2466 |
|
|
return -EBUSY;
|
| 2467 |
|
|
cli();
|
| 2468 |
|
|
MOD_INC_USE_COUNT;
|
| 2469 |
|
|
*p = &ipx_dgram_ops;
|
| 2470 |
|
|
spx_family_ops = spx;
|
| 2471 |
|
|
sti();
|
| 2472 |
|
|
return 0;
|
| 2473 |
|
|
}
|
| 2474 |
|
|
|
| 2475 |
|
|
int ipx_unregister_spx(void)
|
| 2476 |
|
|
{
|
| 2477 |
|
|
spx_family_ops = NULL;
|
| 2478 |
|
|
MOD_DEC_USE_COUNT;
|
| 2479 |
|
|
return 0;
|
| 2480 |
|
|
}
|
| 2481 |
|
|
|
| 2482 |
|
|
/*
|
| 2483 |
|
|
* Socket family declarations
|
| 2484 |
|
|
*/
|
| 2485 |
|
|
|
| 2486 |
|
|
static struct net_proto_family ipx_family_ops = {
|
| 2487 |
|
|
family: PF_IPX,
|
| 2488 |
|
|
create: ipx_create,
|
| 2489 |
|
|
};
|
| 2490 |
|
|
|
| 2491 |
|
|
static struct proto_ops SOCKOPS_WRAPPED(ipx_dgram_ops) = {
|
| 2492 |
|
|
family: PF_IPX,
|
| 2493 |
|
|
|
| 2494 |
|
|
release: ipx_release,
|
| 2495 |
|
|
bind: ipx_bind,
|
| 2496 |
|
|
connect: ipx_connect,
|
| 2497 |
|
|
socketpair: sock_no_socketpair,
|
| 2498 |
|
|
accept: sock_no_accept,
|
| 2499 |
|
|
getname: ipx_getname,
|
| 2500 |
|
|
poll: datagram_poll,
|
| 2501 |
|
|
ioctl: ipx_ioctl,
|
| 2502 |
|
|
listen: sock_no_listen,
|
| 2503 |
|
|
shutdown: sock_no_shutdown, /* FIXME: have to support shutdown */
|
| 2504 |
|
|
setsockopt: ipx_setsockopt,
|
| 2505 |
|
|
getsockopt: ipx_getsockopt,
|
| 2506 |
|
|
sendmsg: ipx_sendmsg,
|
| 2507 |
|
|
recvmsg: ipx_recvmsg,
|
| 2508 |
|
|
mmap: sock_no_mmap,
|
| 2509 |
|
|
sendpage: sock_no_sendpage,
|
| 2510 |
|
|
};
|
| 2511 |
|
|
|
| 2512 |
|
|
#include <linux/smp_lock.h>
|
| 2513 |
|
|
SOCKOPS_WRAP(ipx_dgram, PF_IPX);
|
| 2514 |
|
|
|
| 2515 |
|
|
static struct packet_type ipx_8023_packet_type = {
|
| 2516 |
|
|
type: __constant_htons(ETH_P_802_3),
|
| 2517 |
|
|
func: ipx_rcv,
|
| 2518 |
|
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
| 2519 |
|
|
};
|
| 2520 |
|
|
|
| 2521 |
|
|
static struct packet_type ipx_dix_packet_type = {
|
| 2522 |
|
|
type: __constant_htons(ETH_P_IPX),
|
| 2523 |
|
|
func: ipx_rcv,
|
| 2524 |
|
|
data: (void *) 1, /* yap, I understand shared skbs :-) */
|
| 2525 |
|
|
};
|
| 2526 |
|
|
|
| 2527 |
|
|
static struct notifier_block ipx_dev_notifier = {
|
| 2528 |
|
|
notifier_call: ipxitf_device_event,
|
| 2529 |
|
|
};
|
| 2530 |
|
|
|
| 2531 |
|
|
|
| 2532 |
|
|
extern struct datalink_proto *make_EII_client(void);
|
| 2533 |
|
|
extern struct datalink_proto *make_8023_client(void);
|
| 2534 |
|
|
extern void destroy_EII_client(struct datalink_proto *);
|
| 2535 |
|
|
extern void destroy_8023_client(struct datalink_proto *);
|
| 2536 |
|
|
|
| 2537 |
|
|
static unsigned char ipx_8022_type = 0xE0;
|
| 2538 |
|
|
static unsigned char ipx_snap_id[5] = { 0x0, 0x0, 0x0, 0x81, 0x37 };
|
| 2539 |
|
|
static char banner[] __initdata =
|
| 2540 |
|
|
KERN_INFO "NET4: Linux IPX 0.47 for NET4.0\n"
|
| 2541 |
|
|
KERN_INFO "IPX Portions Copyright (c) 1995 Caldera, Inc.\n" \
|
| 2542 |
|
|
KERN_INFO "IPX Portions Copyright (c) 2000, 2001 Conectiva, Inc.\n";
|
| 2543 |
|
|
|
| 2544 |
|
|
static int __init ipx_init(void)
|
| 2545 |
|
|
{
|
| 2546 |
|
|
sock_register(&ipx_family_ops);
|
| 2547 |
|
|
|
| 2548 |
|
|
pEII_datalink = make_EII_client();
|
| 2549 |
|
|
dev_add_pack(&ipx_dix_packet_type);
|
| 2550 |
|
|
|
| 2551 |
|
|
p8023_datalink = make_8023_client();
|
| 2552 |
|
|
dev_add_pack(&ipx_8023_packet_type);
|
| 2553 |
|
|
|
| 2554 |
|
|
p8022_datalink = register_8022_client(ipx_8022_type, ipx_rcv);
|
| 2555 |
|
|
if (!p8022_datalink)
|
| 2556 |
|
|
printk(KERN_CRIT "IPX: Unable to register with 802.2\n");
|
| 2557 |
|
|
|
| 2558 |
|
|
pSNAP_datalink = register_snap_client(ipx_snap_id, ipx_rcv);
|
| 2559 |
|
|
if (!pSNAP_datalink)
|
| 2560 |
|
|
printk(KERN_CRIT "IPX: Unable to register with SNAP\n");
|
| 2561 |
|
|
|
| 2562 |
|
|
register_netdevice_notifier(&ipx_dev_notifier);
|
| 2563 |
|
|
ipx_register_sysctl();
|
| 2564 |
|
|
#ifdef CONFIG_PROC_FS
|
| 2565 |
|
|
proc_net_create("ipx", 0, ipx_get_info);
|
| 2566 |
|
|
proc_net_create("ipx_interface", 0, ipx_interface_get_info);
|
| 2567 |
|
|
proc_net_create("ipx_route", 0, ipx_rt_get_info);
|
| 2568 |
|
|
#endif
|
| 2569 |
|
|
printk(banner);
|
| 2570 |
|
|
return 0;
|
| 2571 |
|
|
}
|
| 2572 |
|
|
|
| 2573 |
|
|
module_init(ipx_init);
|
| 2574 |
|
|
|
| 2575 |
|
|
/* Higher layers need this info to prep tx pkts */
|
| 2576 |
|
|
int ipx_if_offset(unsigned long ipx_net_number)
|
| 2577 |
|
|
{
|
| 2578 |
|
|
ipx_route *rt = ipxrtr_lookup(ipx_net_number);
|
| 2579 |
|
|
int ret = -ENETUNREACH;
|
| 2580 |
|
|
|
| 2581 |
|
|
if (!rt)
|
| 2582 |
|
|
goto out;
|
| 2583 |
|
|
ret = rt->ir_intrfc->if_ipx_offset;
|
| 2584 |
|
|
ipxrtr_put(rt);
|
| 2585 |
|
|
out: return ret;
|
| 2586 |
|
|
}
|
| 2587 |
|
|
|
| 2588 |
|
|
/* Export symbols for higher layers */
|
| 2589 |
|
|
EXPORT_SYMBOL(ipxrtr_route_skb);
|
| 2590 |
|
|
EXPORT_SYMBOL(ipx_if_offset);
|
| 2591 |
|
|
EXPORT_SYMBOL(ipx_remove_socket);
|
| 2592 |
|
|
EXPORT_SYMBOL(ipx_register_spx);
|
| 2593 |
|
|
EXPORT_SYMBOL(ipx_unregister_spx);
|
| 2594 |
|
|
|
| 2595 |
|
|
/* Note on MOD_{INC,DEC}_USE_COUNT:
|
| 2596 |
|
|
*
|
| 2597 |
|
|
* Use counts are incremented/decremented when
|
| 2598 |
|
|
* sockets are created/deleted.
|
| 2599 |
|
|
*
|
| 2600 |
|
|
* Routes are always associated with an interface, and
|
| 2601 |
|
|
* allocs/frees will remain properly accounted for by
|
| 2602 |
|
|
* their associated interfaces.
|
| 2603 |
|
|
*
|
| 2604 |
|
|
* Ergo, before the ipx module can be removed, all IPX
|
| 2605 |
|
|
* sockets be closed from user space.
|
| 2606 |
|
|
*/
|
| 2607 |
|
|
|
| 2608 |
|
|
static void __exit ipx_proto_finito(void)
|
| 2609 |
|
|
{
|
| 2610 |
|
|
/* no need to worry about having anything on the ipx_interfaces
|
| 2611 |
|
|
* list, when a interface is created we increment the module
|
| 2612 |
|
|
* usage count, so the module will only be unloaded when there
|
| 2613 |
|
|
* are no more interfaces */
|
| 2614 |
|
|
|
| 2615 |
|
|
proc_net_remove("ipx_route");
|
| 2616 |
|
|
proc_net_remove("ipx_interface");
|
| 2617 |
|
|
proc_net_remove("ipx");
|
| 2618 |
|
|
ipx_unregister_sysctl();
|
| 2619 |
|
|
|
| 2620 |
|
|
unregister_netdevice_notifier(&ipx_dev_notifier);
|
| 2621 |
|
|
|
| 2622 |
|
|
unregister_snap_client(ipx_snap_id);
|
| 2623 |
|
|
pSNAP_datalink = NULL;
|
| 2624 |
|
|
|
| 2625 |
|
|
unregister_8022_client(ipx_8022_type);
|
| 2626 |
|
|
p8022_datalink = NULL;
|
| 2627 |
|
|
|
| 2628 |
|
|
dev_remove_pack(&ipx_8023_packet_type);
|
| 2629 |
|
|
destroy_8023_client(p8023_datalink);
|
| 2630 |
|
|
p8023_datalink = NULL;
|
| 2631 |
|
|
|
| 2632 |
|
|
dev_remove_pack(&ipx_dix_packet_type);
|
| 2633 |
|
|
destroy_EII_client(pEII_datalink);
|
| 2634 |
|
|
pEII_datalink = NULL;
|
| 2635 |
|
|
|
| 2636 |
|
|
sock_unregister(ipx_family_ops.family);
|
| 2637 |
|
|
}
|
| 2638 |
|
|
|
| 2639 |
|
|
module_exit(ipx_proto_finito);
|
| 2640 |
|
|
MODULE_LICENSE("GPL");
|
