projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 16 | ||
| 17 | struct ipx_address { | |
| 18 | __u32 net; | |
| 19 | __u8 node[IPX_NODE_LEN]; | |
| 20 | __u16 sock; | |
| 21 | }; | |
| 22 | ||
| 23 | #define ipx_broadcast_node "\377\377\377\377\377\377" | |
| 24 | #define ipx_this_node "\0\0\0\0\0\0" | |
| 25 | ||
| 26 | #define IPX_MAX_PPROP_HOPS 8 | |
| 27 | ||
| 28 | struct ipxhdr { | |
| 29 | __u16 ipx_checksum __attribute__ ((packed)); | |
| 30 | #define IPX_NO_CHECKSUM 0xFFFF | |
| 31 | __u16 ipx_pktsize __attribute__ ((packed)); | |
| 32 | __u8 ipx_tctrl; | |
| 33 | __u8 ipx_type; | |
| 34 | #define IPX_TYPE_UNKNOWN 0x00 | |
| 35 | #define IPX_TYPE_RIP 0x01 /* may also be 0 */ | |
| 36 | #define IPX_TYPE_SAP 0x04 /* may also be 0 */ | |
| 37 | #define IPX_TYPE_SPX 0x05 /* SPX protocol */ | |
| 38 | #define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ | |
| 39 | #define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ | |
| 40 | struct ipx_address ipx_dest __attribute__ ((packed)); | |
| 41 | struct ipx_address ipx_source __attribute__ ((packed)); | |
| 42 | }; | |
| 43 | ||
| 44 | static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) | |
| 45 | { | |
| 46 | return (struct ipxhdr *)skb->h.raw; | |
| 47 | } | |
| 48 | ||
| 49 | struct ipx_interface { | |
| 50 | /* IPX address */ | |
| 51 | __u32 if_netnum; | |
| 52 | unsigned char if_node[IPX_NODE_LEN]; | |
| 53 | atomic_t refcnt; | |
| 54 | ||
| 55 | /* physical device info */ | |
| 56 | struct net_device *if_dev; | |
| 57 | struct datalink_proto *if_dlink; | |
| 58 | unsigned short if_dlink_type; | |
| 59 | ||
| 60 | /* socket support */ | |
| 61 | unsigned short if_sknum; | |
| 62 | struct hlist_head if_sklist; | |
| 63 | spinlock_t if_sklist_lock; | |
| 64 | ||
| 65 | /* administrative overhead */ | |
| 66 | int if_ipx_offset; | |
| 67 | unsigned char if_internal; | |
| 68 | unsigned char if_primary; | |
| 69 | ||
| 70 | struct list_head node; /* node in ipx_interfaces list */ | |
| 71 | }; | |
| 72 | ||
| 73 | struct ipx_route { | |
| 74 | __u32 ir_net; | |
| 75 | struct ipx_interface *ir_intrfc; | |
| 76 | unsigned char ir_routed; | |
| 77 | unsigned char ir_router_node[IPX_NODE_LEN]; | |
| 78 | struct list_head node; /* node in ipx_routes list */ | |
| 79 | atomic_t refcnt; | |
| 80 | }; | |
| 81 | ||
| 82 | #ifdef __KERNEL__ | |
| 83 | struct ipx_cb { | |
| 84 | u8 ipx_tctrl; | |
| 85 | u32 ipx_dest_net; | |
| 86 | u32 ipx_source_net; | |
| 87 | struct { | |
| 88 | u32 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 | unsigned short 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 | #endif | |
| 119 | ||
| 120 | #define IPX_MIN_EPHEMERAL_SOCKET 0x4000 | |
| 121 | #define IPX_MAX_EPHEMERAL_SOCKET 0x7fff | |
| 122 | ||
| 123 | extern struct list_head ipx_routes; | |
| 124 | extern rwlock_t ipx_routes_lock; | |
| 125 | ||
| 126 | extern struct list_head ipx_interfaces; | |
| 127 | extern struct ipx_interface *ipx_interfaces_head(void); | |
| 128 | extern spinlock_t ipx_interfaces_lock; | |
| 129 | ||
| 130 | extern struct ipx_interface *ipx_primary_net; | |
| 131 | ||
| 132 | extern int ipx_proc_init(void); | |
| 133 | extern void ipx_proc_exit(void); | |
| 134 | ||
| 135 | extern const char *ipx_frame_name(unsigned short); | |
| 136 | extern const char *ipx_device_name(struct ipx_interface *intrfc); | |
| 137 | ||
| 138 | static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) | |
| 139 | { | |
| 140 | atomic_inc(&intrfc->refcnt); | |
| 141 | } | |
| 142 | ||
| 143 | extern void ipxitf_down(struct ipx_interface *intrfc); | |
| 144 | ||
| 145 | static __inline__ void ipxitf_put(struct ipx_interface *intrfc) | |
| 146 | { | |
| 147 | if (atomic_dec_and_test(&intrfc->refcnt)) | |
| 148 | ipxitf_down(intrfc); | |
| 149 | } | |
| 150 | ||
| 151 | static __inline__ void ipxrtr_hold(struct ipx_route *rt) | |
| 152 | { | |
| 153 | atomic_inc(&rt->refcnt); | |
| 154 | } | |
| 155 | ||
| 156 | static __inline__ void ipxrtr_put(struct ipx_route *rt) | |
| 157 | { | |
| 158 | if (atomic_dec_and_test(&rt->refcnt)) | |
| 159 | kfree(rt); | |
| 160 | } | |
| 161 | #endif /* _NET_INET_IPX_H_ */ |