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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> |
16 | #include <linux/slab.h> |
17 | |
18 | struct ipx_address { |
19 | __be32 net; |
20 | __u8 node[IPX_NODE_LEN]; |
21 | __be16 sock; |
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 { |
30 | __be16 ipx_checksum __packed; |
31 | #define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) |
32 | __be16 ipx_pktsize __packed; |
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 */ |
41 | struct ipx_address ipx_dest __packed; |
42 | struct ipx_address ipx_source __packed; |
43 | }; |
44 | |
45 | static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) |
46 | { |
47 | return (struct ipxhdr *)skb_transport_header(skb); |
48 | } |
49 | |
50 | struct ipx_interface { |
51 | /* IPX address */ |
52 | __be32 if_netnum; |
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; |
59 | __be16 if_dlink_type; |
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 { |
75 | __be32 ir_net; |
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 | struct ipx_cb { |
84 | u8 ipx_tctrl; |
85 | __be32 ipx_dest_net; |
86 | __be32 ipx_source_net; |
87 | struct { |
88 | __be32 netnum; |
89 | int index; |
90 | } last_hop; |
91 | }; |
92 | |
93 | #include <net/sock.h> |
94 | |
95 | struct ipx_sock { |
96 | /* struct sock has to be the first member of ipx_sock */ |
97 | struct sock sk; |
98 | struct ipx_address dest_addr; |
99 | struct ipx_interface *intrfc; |
100 | __be16 port; |
101 | #ifdef CONFIG_IPX_INTERN |
102 | unsigned char node[IPX_NODE_LEN]; |
103 | #endif |
104 | unsigned short type; |
105 | /* |
106 | * To handle special ncp connection-handling sockets for mars_nwe, |
107 | * the connection number must be stored in the socket. |
108 | */ |
109 | unsigned short ipx_ncp_conn; |
110 | }; |
111 | |
112 | static inline struct ipx_sock *ipx_sk(struct sock *sk) |
113 | { |
114 | return (struct ipx_sock *)sk; |
115 | } |
116 | |
117 | #define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) |
118 | |
119 | #define IPX_MIN_EPHEMERAL_SOCKET 0x4000 |
120 | #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff |
121 | |
122 | extern struct list_head ipx_routes; |
123 | extern rwlock_t ipx_routes_lock; |
124 | |
125 | extern struct list_head ipx_interfaces; |
126 | extern struct ipx_interface *ipx_interfaces_head(void); |
127 | extern spinlock_t ipx_interfaces_lock; |
128 | |
129 | extern struct ipx_interface *ipx_primary_net; |
130 | |
131 | extern int ipx_proc_init(void); |
132 | extern void ipx_proc_exit(void); |
133 | |
134 | extern const char *ipx_frame_name(__be16); |
135 | extern const char *ipx_device_name(struct ipx_interface *intrfc); |
136 | |
137 | static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) |
138 | { |
139 | atomic_inc(&intrfc->refcnt); |
140 | } |
141 | |
142 | extern void ipxitf_down(struct ipx_interface *intrfc); |
143 | |
144 | static __inline__ void ipxitf_put(struct ipx_interface *intrfc) |
145 | { |
146 | if (atomic_dec_and_test(&intrfc->refcnt)) |
147 | ipxitf_down(intrfc); |
148 | } |
149 | |
150 | static __inline__ void ipxrtr_hold(struct ipx_route *rt) |
151 | { |
152 | atomic_inc(&rt->refcnt); |
153 | } |
154 | |
155 | static __inline__ void ipxrtr_put(struct ipx_route *rt) |
156 | { |
157 | if (atomic_dec_and_test(&rt->refcnt)) |
158 | kfree(rt); |
159 | } |
160 | #endif /* _NET_INET_IPX_H_ */ |
161 |
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