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1da177e4 LT |
1 | #ifndef _NET_INET_IPX_H_ |
2 | #define _NET_INET_IPX_H_ | |
3 | /* | |
4 | * The following information is in its entirety obtained from: | |
5 | * | |
6 | * Novell 'IPX Router Specification' Version 1.10 | |
7 | * Part No. 107-000029-001 | |
8 | * | |
9 | * Which is available from ftp.novell.com | |
10 | */ | |
11 | ||
12 | #include <linux/netdevice.h> | |
13 | #include <net/datalink.h> | |
14 | #include <linux/ipx.h> | |
15 | #include <linux/list.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
1da177e4 LT |
17 | |
18 | struct ipx_address { | |
4833ed09 | 19 | __be32 net; |
1da177e4 | 20 | __u8 node[IPX_NODE_LEN]; |
4833ed09 | 21 | __be16 sock; |
1da177e4 LT |
22 | }; |
23 | ||
24 | #define ipx_broadcast_node "\377\377\377\377\377\377" | |
25 | #define ipx_this_node "\0\0\0\0\0\0" | |
26 | ||
27 | #define IPX_MAX_PPROP_HOPS 8 | |
28 | ||
29 | struct ipxhdr { | |
bc10502d | 30 | __be16 ipx_checksum __packed; |
f3a7c66b | 31 | #define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) |
bc10502d | 32 | __be16 ipx_pktsize __packed; |
1da177e4 LT |
33 | __u8 ipx_tctrl; |
34 | __u8 ipx_type; | |
35 | #define IPX_TYPE_UNKNOWN 0x00 | |
36 | #define IPX_TYPE_RIP 0x01 /* may also be 0 */ | |
37 | #define IPX_TYPE_SAP 0x04 /* may also be 0 */ | |
38 | #define IPX_TYPE_SPX 0x05 /* SPX protocol */ | |
39 | #define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ | |
40 | #define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ | |
bc10502d ED |
41 | struct ipx_address ipx_dest __packed; |
42 | struct ipx_address ipx_source __packed; | |
1da177e4 LT |
43 | }; |
44 | ||
45 | static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) | |
46 | { | |
9c70220b | 47 | return (struct ipxhdr *)skb_transport_header(skb); |
1da177e4 LT |
48 | } |
49 | ||
50 | struct ipx_interface { | |
51 | /* IPX address */ | |
4833ed09 | 52 | __be32 if_netnum; |
1da177e4 LT |
53 | unsigned char if_node[IPX_NODE_LEN]; |
54 | atomic_t refcnt; | |
55 | ||
56 | /* physical device info */ | |
57 | struct net_device *if_dev; | |
58 | struct datalink_proto *if_dlink; | |
4833ed09 | 59 | __be16 if_dlink_type; |
1da177e4 LT |
60 | |
61 | /* socket support */ | |
62 | unsigned short if_sknum; | |
63 | struct hlist_head if_sklist; | |
64 | spinlock_t if_sklist_lock; | |
65 | ||
66 | /* administrative overhead */ | |
67 | int if_ipx_offset; | |
68 | unsigned char if_internal; | |
69 | unsigned char if_primary; | |
70 | ||
71 | struct list_head node; /* node in ipx_interfaces list */ | |
72 | }; | |
73 | ||
74 | struct ipx_route { | |
4833ed09 | 75 | __be32 ir_net; |
1da177e4 LT |
76 | struct ipx_interface *ir_intrfc; |
77 | unsigned char ir_routed; | |
78 | unsigned char ir_router_node[IPX_NODE_LEN]; | |
79 | struct list_head node; /* node in ipx_routes list */ | |
80 | atomic_t refcnt; | |
81 | }; | |
82 | ||
83 | #ifdef __KERNEL__ | |
84 | struct ipx_cb { | |
85 | u8 ipx_tctrl; | |
4833ed09 AV |
86 | __be32 ipx_dest_net; |
87 | __be32 ipx_source_net; | |
1da177e4 | 88 | struct { |
4833ed09 | 89 | __be32 netnum; |
1da177e4 LT |
90 | int index; |
91 | } last_hop; | |
92 | }; | |
93 | ||
94 | #include <net/sock.h> | |
95 | ||
96 | struct ipx_sock { | |
97 | /* struct sock has to be the first member of ipx_sock */ | |
98 | struct sock sk; | |
99 | struct ipx_address dest_addr; | |
100 | struct ipx_interface *intrfc; | |
4833ed09 | 101 | __be16 port; |
1da177e4 LT |
102 | #ifdef CONFIG_IPX_INTERN |
103 | unsigned char node[IPX_NODE_LEN]; | |
104 | #endif | |
105 | unsigned short type; | |
106 | /* | |
107 | * To handle special ncp connection-handling sockets for mars_nwe, | |
108 | * the connection number must be stored in the socket. | |
109 | */ | |
110 | unsigned short ipx_ncp_conn; | |
111 | }; | |
112 | ||
113 | static inline struct ipx_sock *ipx_sk(struct sock *sk) | |
114 | { | |
115 | return (struct ipx_sock *)sk; | |
116 | } | |
117 | ||
118 | #define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) | |
119 | #endif | |
120 | ||
121 | #define IPX_MIN_EPHEMERAL_SOCKET 0x4000 | |
122 | #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff | |
123 | ||
124 | extern struct list_head ipx_routes; | |
125 | extern rwlock_t ipx_routes_lock; | |
126 | ||
127 | extern struct list_head ipx_interfaces; | |
128 | extern struct ipx_interface *ipx_interfaces_head(void); | |
129 | extern spinlock_t ipx_interfaces_lock; | |
130 | ||
131 | extern struct ipx_interface *ipx_primary_net; | |
132 | ||
133 | extern int ipx_proc_init(void); | |
134 | extern void ipx_proc_exit(void); | |
135 | ||
4833ed09 | 136 | extern const char *ipx_frame_name(__be16); |
1da177e4 LT |
137 | extern const char *ipx_device_name(struct ipx_interface *intrfc); |
138 | ||
139 | static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) | |
140 | { | |
141 | atomic_inc(&intrfc->refcnt); | |
142 | } | |
143 | ||
144 | extern void ipxitf_down(struct ipx_interface *intrfc); | |
145 | ||
146 | static __inline__ void ipxitf_put(struct ipx_interface *intrfc) | |
147 | { | |
148 | if (atomic_dec_and_test(&intrfc->refcnt)) | |
149 | ipxitf_down(intrfc); | |
150 | } | |
151 | ||
152 | static __inline__ void ipxrtr_hold(struct ipx_route *rt) | |
153 | { | |
154 | atomic_inc(&rt->refcnt); | |
155 | } | |
156 | ||
157 | static __inline__ void ipxrtr_put(struct ipx_route *rt) | |
158 | { | |
159 | if (atomic_dec_and_test(&rt->refcnt)) | |
160 | kfree(rt); | |
161 | } | |
162 | #endif /* _NET_INET_IPX_H_ */ |