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 18struct 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 29struct 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 45static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) 46{ 47 return (struct ipxhdr *)skb_transport_header(skb); 48} 49 50struct 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 74struct 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#ifdef __KERNEL__ 84struct ipx_cb { 85 u8 ipx_tctrl; 86 __be32 ipx_dest_net; 87 __be32 ipx_source_net; 88 struct { 89 __be32 netnum; 90 int index; 91 } last_hop; 92}; 93 94#include <net/sock.h> 95 96struct ipx_sock { 97 /* struct sock has to be the first member of ipx_sock */ 98 struct sock sk; 99 struct ipx_address dest_addr; 100 struct ipx_interface *intrfc; 101 __be16 port; 102#ifdef CONFIG_IPX_INTERN 103 unsigned char node[IPX_NODE_LEN]; 104#endif 105 unsigned short type; 106 /* 107 * To handle special ncp connection-handling sockets for mars_nwe, 108 * the connection number must be stored in the socket. 109 */ 110 unsigned short ipx_ncp_conn; 111}; 112 113static inline struct ipx_sock *ipx_sk(struct sock *sk) 114{ 115 return (struct ipx_sock *)sk; 116} 117 118#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) 119#endif 120 121#define IPX_MIN_EPHEMERAL_SOCKET 0x4000 122#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff 123 124extern struct list_head ipx_routes; 125extern rwlock_t ipx_routes_lock; 126 127extern struct list_head ipx_interfaces; 128extern struct ipx_interface *ipx_interfaces_head(void); 129extern spinlock_t ipx_interfaces_lock; 130 131extern struct ipx_interface *ipx_primary_net; 132 133extern int ipx_proc_init(void); 134extern void ipx_proc_exit(void); 135 136extern const char *ipx_frame_name(__be16); 137extern const char *ipx_device_name(struct ipx_interface *intrfc); 138 139static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) 140{ 141 atomic_inc(&intrfc->refcnt); 142} 143 144extern void ipxitf_down(struct ipx_interface *intrfc); 145 146static __inline__ void ipxitf_put(struct ipx_interface *intrfc) 147{ 148 if (atomic_dec_and_test(&intrfc->refcnt)) 149 ipxitf_down(intrfc); 150} 151 152static __inline__ void ipxrtr_hold(struct ipx_route *rt) 153{ 154 atomic_inc(&rt->refcnt); 155} 156 157static __inline__ void ipxrtr_put(struct ipx_route *rt) 158{ 159 if (atomic_dec_and_test(&rt->refcnt)) 160 kfree(rt); 161} 162#endif /* _NET_INET_IPX_H_ */ 163