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 ipx_hdr(struct sk_buff * skb)45static __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 ipx_sk(struct sock * sk)112static 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 ipxitf_hold(struct ipx_interface * intrfc)137static __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 ipxitf_put(struct ipx_interface * intrfc)144static __inline__ void ipxitf_put(struct ipx_interface *intrfc) 145 { 146 if (atomic_dec_and_test(&intrfc->refcnt)) 147 ipxitf_down(intrfc); 148 } 149 ipxrtr_hold(struct ipx_route * rt)150static __inline__ void ipxrtr_hold(struct ipx_route *rt) 151 { 152 atomic_inc(&rt->refcnt); 153 } 154 ipxrtr_put(struct ipx_route * rt)155static __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