1 #ifndef _NET_INET_IPX_H_
2 #define _NET_INET_IPX_H_
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>
20 __u8 node[IPX_NODE_LEN];
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
30 __be16 ipx_checksum __packed;
31 #define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF)
32 __be16 ipx_pktsize __packed;
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;
46 extern int sysctl_ipx_pprop_broadcasting;
48 static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb)
50 return (struct ipxhdr *)skb_transport_header(skb);
53 struct ipx_interface {
56 unsigned char if_node[IPX_NODE_LEN];
59 /* physical device info */
60 struct net_device *if_dev;
61 struct datalink_proto *if_dlink;
65 unsigned short if_sknum;
66 struct hlist_head if_sklist;
67 spinlock_t if_sklist_lock;
69 /* administrative overhead */
71 unsigned char if_internal;
72 unsigned char if_primary;
74 struct list_head node; /* node in ipx_interfaces list */
79 struct ipx_interface *ir_intrfc;
80 unsigned char ir_routed;
81 unsigned char ir_router_node[IPX_NODE_LEN];
82 struct list_head node; /* node in ipx_routes list */
89 __be32 ipx_source_net;
99 /* struct sock has to be the first member of ipx_sock */
101 struct ipx_address dest_addr;
102 struct ipx_interface *intrfc;
104 #ifdef CONFIG_IPX_INTERN
105 unsigned char node[IPX_NODE_LEN];
109 * To handle special ncp connection-handling sockets for mars_nwe,
110 * the connection number must be stored in the socket.
112 unsigned short ipx_ncp_conn;
115 static inline struct ipx_sock *ipx_sk(struct sock *sk)
117 return (struct ipx_sock *)sk;
120 #define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0]))
122 #define IPX_MIN_EPHEMERAL_SOCKET 0x4000
123 #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff
125 extern struct list_head ipx_routes;
126 extern rwlock_t ipx_routes_lock;
128 extern struct list_head ipx_interfaces;
129 struct ipx_interface *ipx_interfaces_head(void);
130 extern spinlock_t ipx_interfaces_lock;
132 extern struct ipx_interface *ipx_primary_net;
134 int ipx_proc_init(void);
135 void ipx_proc_exit(void);
137 const char *ipx_frame_name(__be16);
138 const char *ipx_device_name(struct ipx_interface *intrfc);
140 static __inline__ void ipxitf_hold(struct ipx_interface *intrfc)
142 atomic_inc(&intrfc->refcnt);
145 void ipxitf_down(struct ipx_interface *intrfc);
146 struct ipx_interface *ipxitf_find_using_net(__be32 net);
147 int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node);
148 __be16 ipx_cksum(struct ipxhdr *packet, int length);
149 int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
150 unsigned char *node);
151 void ipxrtr_del_routes(struct ipx_interface *intrfc);
152 int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
153 struct msghdr *msg, size_t len, int noblock);
154 int ipxrtr_route_skb(struct sk_buff *skb);
155 struct ipx_route *ipxrtr_lookup(__be32 net);
156 int ipxrtr_ioctl(unsigned int cmd, void __user *arg);
158 static __inline__ void ipxitf_put(struct ipx_interface *intrfc)
160 if (atomic_dec_and_test(&intrfc->refcnt))
164 static __inline__ void ipxrtr_hold(struct ipx_route *rt)
166 atomic_inc(&rt->refcnt);
169 static __inline__ void ipxrtr_put(struct ipx_route *rt)
171 if (atomic_dec_and_test(&rt->refcnt))
174 #endif /* _NET_INET_IPX_H_ */