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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> |
d25189ca | 17 | #include <linux/refcount.h> |
1da177e4 LT |
18 | |
19 | struct ipx_address { | |
4833ed09 | 20 | __be32 net; |
1da177e4 | 21 | __u8 node[IPX_NODE_LEN]; |
4833ed09 | 22 | __be16 sock; |
1da177e4 LT |
23 | }; |
24 | ||
25 | #define ipx_broadcast_node "\377\377\377\377\377\377" | |
26 | #define ipx_this_node "\0\0\0\0\0\0" | |
27 | ||
28 | #define IPX_MAX_PPROP_HOPS 8 | |
29 | ||
30 | struct ipxhdr { | |
bc10502d | 31 | __be16 ipx_checksum __packed; |
f3a7c66b | 32 | #define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) |
bc10502d | 33 | __be16 ipx_pktsize __packed; |
1da177e4 LT |
34 | __u8 ipx_tctrl; |
35 | __u8 ipx_type; | |
36 | #define IPX_TYPE_UNKNOWN 0x00 | |
37 | #define IPX_TYPE_RIP 0x01 /* may also be 0 */ | |
38 | #define IPX_TYPE_SAP 0x04 /* may also be 0 */ | |
39 | #define IPX_TYPE_SPX 0x05 /* SPX protocol */ | |
40 | #define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ | |
41 | #define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ | |
bc10502d ED |
42 | struct ipx_address ipx_dest __packed; |
43 | struct ipx_address ipx_source __packed; | |
1da177e4 LT |
44 | }; |
45 | ||
5e96d788 FF |
46 | /* From af_ipx.c */ |
47 | extern int sysctl_ipx_pprop_broadcasting; | |
48 | ||
1da177e4 LT |
49 | static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) |
50 | { | |
9c70220b | 51 | return (struct ipxhdr *)skb_transport_header(skb); |
1da177e4 LT |
52 | } |
53 | ||
54 | struct ipx_interface { | |
55 | /* IPX address */ | |
4833ed09 | 56 | __be32 if_netnum; |
1da177e4 | 57 | unsigned char if_node[IPX_NODE_LEN]; |
d25189ca | 58 | refcount_t refcnt; |
1da177e4 LT |
59 | |
60 | /* physical device info */ | |
61 | struct net_device *if_dev; | |
62 | struct datalink_proto *if_dlink; | |
4833ed09 | 63 | __be16 if_dlink_type; |
1da177e4 LT |
64 | |
65 | /* socket support */ | |
66 | unsigned short if_sknum; | |
67 | struct hlist_head if_sklist; | |
68 | spinlock_t if_sklist_lock; | |
69 | ||
70 | /* administrative overhead */ | |
71 | int if_ipx_offset; | |
72 | unsigned char if_internal; | |
73 | unsigned char if_primary; | |
74 | ||
75 | struct list_head node; /* node in ipx_interfaces list */ | |
76 | }; | |
77 | ||
78 | struct ipx_route { | |
4833ed09 | 79 | __be32 ir_net; |
1da177e4 LT |
80 | struct ipx_interface *ir_intrfc; |
81 | unsigned char ir_routed; | |
82 | unsigned char ir_router_node[IPX_NODE_LEN]; | |
83 | struct list_head node; /* node in ipx_routes list */ | |
16f73c96 | 84 | refcount_t refcnt; |
1da177e4 LT |
85 | }; |
86 | ||
1da177e4 LT |
87 | struct ipx_cb { |
88 | u8 ipx_tctrl; | |
4833ed09 AV |
89 | __be32 ipx_dest_net; |
90 | __be32 ipx_source_net; | |
1da177e4 | 91 | struct { |
4833ed09 | 92 | __be32 netnum; |
1da177e4 LT |
93 | int index; |
94 | } last_hop; | |
95 | }; | |
96 | ||
97 | #include <net/sock.h> | |
98 | ||
99 | struct ipx_sock { | |
100 | /* struct sock has to be the first member of ipx_sock */ | |
101 | struct sock sk; | |
102 | struct ipx_address dest_addr; | |
103 | struct ipx_interface *intrfc; | |
4833ed09 | 104 | __be16 port; |
1da177e4 LT |
105 | #ifdef CONFIG_IPX_INTERN |
106 | unsigned char node[IPX_NODE_LEN]; | |
107 | #endif | |
108 | unsigned short type; | |
109 | /* | |
110 | * To handle special ncp connection-handling sockets for mars_nwe, | |
111 | * the connection number must be stored in the socket. | |
112 | */ | |
113 | unsigned short ipx_ncp_conn; | |
114 | }; | |
115 | ||
116 | static inline struct ipx_sock *ipx_sk(struct sock *sk) | |
117 | { | |
118 | return (struct ipx_sock *)sk; | |
119 | } | |
120 | ||
121 | #define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) | |
1da177e4 LT |
122 | |
123 | #define IPX_MIN_EPHEMERAL_SOCKET 0x4000 | |
124 | #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff | |
125 | ||
126 | extern struct list_head ipx_routes; | |
127 | extern rwlock_t ipx_routes_lock; | |
128 | ||
129 | extern struct list_head ipx_interfaces; | |
9d03626a | 130 | struct ipx_interface *ipx_interfaces_head(void); |
1da177e4 LT |
131 | extern spinlock_t ipx_interfaces_lock; |
132 | ||
133 | extern struct ipx_interface *ipx_primary_net; | |
134 | ||
9d03626a JP |
135 | int ipx_proc_init(void); |
136 | void ipx_proc_exit(void); | |
1da177e4 | 137 | |
9d03626a JP |
138 | const char *ipx_frame_name(__be16); |
139 | const char *ipx_device_name(struct ipx_interface *intrfc); | |
1da177e4 LT |
140 | |
141 | static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) | |
142 | { | |
d25189ca | 143 | refcount_inc(&intrfc->refcnt); |
1da177e4 LT |
144 | } |
145 | ||
9d03626a | 146 | void ipxitf_down(struct ipx_interface *intrfc); |
493cc5e5 RK |
147 | struct ipx_interface *ipxitf_find_using_net(__be32 net); |
148 | int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node); | |
149 | __be16 ipx_cksum(struct ipxhdr *packet, int length); | |
578efbc1 RK |
150 | int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc, |
151 | unsigned char *node); | |
152 | void ipxrtr_del_routes(struct ipx_interface *intrfc); | |
153 | int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx, | |
e1693718 | 154 | struct msghdr *msg, size_t len, int noblock); |
578efbc1 RK |
155 | int ipxrtr_route_skb(struct sk_buff *skb); |
156 | struct ipx_route *ipxrtr_lookup(__be32 net); | |
157 | int ipxrtr_ioctl(unsigned int cmd, void __user *arg); | |
1da177e4 LT |
158 | |
159 | static __inline__ void ipxitf_put(struct ipx_interface *intrfc) | |
160 | { | |
d25189ca | 161 | if (refcount_dec_and_test(&intrfc->refcnt)) |
1da177e4 LT |
162 | ipxitf_down(intrfc); |
163 | } | |
164 | ||
165 | static __inline__ void ipxrtr_hold(struct ipx_route *rt) | |
166 | { | |
16f73c96 | 167 | refcount_inc(&rt->refcnt); |
1da177e4 LT |
168 | } |
169 | ||
170 | static __inline__ void ipxrtr_put(struct ipx_route *rt) | |
171 | { | |
16f73c96 | 172 | if (refcount_dec_and_test(&rt->refcnt)) |
1da177e4 LT |
173 | kfree(rt); |
174 | } | |
175 | #endif /* _NET_INET_IPX_H_ */ |