Linux 3.12.39
[linux/fpc-iii.git] / include / net / ipx.h
blobc1fec6b464cc7b3926bfa12e55893994d772cc32
1 #ifndef _NET_INET_IPX_H_
2 #define _NET_INET_IPX_H_
3 /*
4 * The following information is in its entirety obtained from:
6 * Novell 'IPX Router Specification' Version 1.10
7 * Part No. 107-000029-001
9 * Which is available from ftp.novell.com
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>
18 struct ipx_address {
19 __be32 net;
20 __u8 node[IPX_NODE_LEN];
21 __be16 sock;
24 #define ipx_broadcast_node "\377\377\377\377\377\377"
25 #define ipx_this_node "\0\0\0\0\0\0"
27 #define IPX_MAX_PPROP_HOPS 8
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;
45 static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb)
47 return (struct ipxhdr *)skb_transport_header(skb);
50 struct ipx_interface {
51 /* IPX address */
52 __be32 if_netnum;
53 unsigned char if_node[IPX_NODE_LEN];
54 atomic_t refcnt;
56 /* physical device info */
57 struct net_device *if_dev;
58 struct datalink_proto *if_dlink;
59 __be16 if_dlink_type;
61 /* socket support */
62 unsigned short if_sknum;
63 struct hlist_head if_sklist;
64 spinlock_t if_sklist_lock;
66 /* administrative overhead */
67 int if_ipx_offset;
68 unsigned char if_internal;
69 unsigned char if_primary;
71 struct list_head node; /* node in ipx_interfaces list */
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;
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;
93 #include <net/sock.h>
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;
106 * To handle special ncp connection-handling sockets for mars_nwe,
107 * the connection number must be stored in the socket.
109 unsigned short ipx_ncp_conn;
112 static inline struct ipx_sock *ipx_sk(struct sock *sk)
114 return (struct ipx_sock *)sk;
117 #define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
119 #define IPX_MIN_EPHEMERAL_SOCKET 0x4000
120 #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff
122 extern struct list_head ipx_routes;
123 extern rwlock_t ipx_routes_lock;
125 extern struct list_head ipx_interfaces;
126 extern struct ipx_interface *ipx_interfaces_head(void);
127 extern spinlock_t ipx_interfaces_lock;
129 extern struct ipx_interface *ipx_primary_net;
131 extern int ipx_proc_init(void);
132 extern void ipx_proc_exit(void);
134 extern const char *ipx_frame_name(__be16);
135 extern const char *ipx_device_name(struct ipx_interface *intrfc);
137 static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
139 atomic_inc(&intrfc->refcnt);
142 extern void ipxitf_down(struct ipx_interface *intrfc);
144 static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
146 if (atomic_dec_and_test(&intrfc->refcnt))
147 ipxitf_down(intrfc);
150 static __inline__ void ipxrtr_hold(struct ipx_route *rt)
152 atomic_inc(&rt->refcnt);
155 static __inline__ void ipxrtr_put(struct ipx_route *rt)
157 if (atomic_dec_and_test(&rt->refcnt))
158 kfree(rt);
160 #endif /* _NET_INET_IPX_H_ */