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 45/* From af_ipx.c */ 46extern int sysctl_ipx_pprop_broadcasting; 47 48static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) 49{ 50 return (struct ipxhdr *)skb_transport_header(skb); 51} 52 53struct ipx_interface { 54 /* IPX address */ 55 __be32 if_netnum; 56 unsigned char if_node[IPX_NODE_LEN]; 57 atomic_t refcnt; 58 59 /* physical device info */ 60 struct net_device *if_dev; 61 struct datalink_proto *if_dlink; 62 __be16 if_dlink_type; 63 64 /* socket support */ 65 unsigned short if_sknum; 66 struct hlist_head if_sklist; 67 spinlock_t if_sklist_lock; 68 69 /* administrative overhead */ 70 int if_ipx_offset; 71 unsigned char if_internal; 72 unsigned char if_primary; 73 74 struct list_head node; /* node in ipx_interfaces list */ 75}; 76 77struct ipx_route { 78 __be32 ir_net; 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 */ 83 atomic_t refcnt; 84}; 85 86struct ipx_cb { 87 u8 ipx_tctrl; 88 __be32 ipx_dest_net; 89 __be32 ipx_source_net; 90 struct { 91 __be32 netnum; 92 int index; 93 } last_hop; 94}; 95 96#include <net/sock.h> 97 98struct ipx_sock { 99 /* struct sock has to be the first member of ipx_sock */ 100 struct sock sk; 101 struct ipx_address dest_addr; 102 struct ipx_interface *intrfc; 103 __be16 port; 104#ifdef CONFIG_IPX_INTERN 105 unsigned char node[IPX_NODE_LEN]; 106#endif 107 unsigned short type; 108 /* 109 * To handle special ncp connection-handling sockets for mars_nwe, 110 * the connection number must be stored in the socket. 111 */ 112 unsigned short ipx_ncp_conn; 113}; 114 115static inline struct ipx_sock *ipx_sk(struct sock *sk) 116{ 117 return (struct ipx_sock *)sk; 118} 119 120#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) 121 122#define IPX_MIN_EPHEMERAL_SOCKET 0x4000 123#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff 124 125extern struct list_head ipx_routes; 126extern rwlock_t ipx_routes_lock; 127 128extern struct list_head ipx_interfaces; 129struct ipx_interface *ipx_interfaces_head(void); 130extern spinlock_t ipx_interfaces_lock; 131 132extern struct ipx_interface *ipx_primary_net; 133 134int ipx_proc_init(void); 135void ipx_proc_exit(void); 136 137const char *ipx_frame_name(__be16); 138const char *ipx_device_name(struct ipx_interface *intrfc); 139 140static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) 141{ 142 atomic_inc(&intrfc->refcnt); 143} 144 145void ipxitf_down(struct ipx_interface *intrfc); 146struct ipx_interface *ipxitf_find_using_net(__be32 net); 147int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node); 148__be16 ipx_cksum(struct ipxhdr *packet, int length); 149int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc, 150 unsigned char *node); 151void ipxrtr_del_routes(struct ipx_interface *intrfc); 152int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx, 153 struct msghdr *msg, size_t len, int noblock); 154int ipxrtr_route_skb(struct sk_buff *skb); 155struct ipx_route *ipxrtr_lookup(__be32 net); 156int ipxrtr_ioctl(unsigned int cmd, void __user *arg); 157 158static __inline__ void ipxitf_put(struct ipx_interface *intrfc) 159{ 160 if (atomic_dec_and_test(&intrfc->refcnt)) 161 ipxitf_down(intrfc); 162} 163 164static __inline__ void ipxrtr_hold(struct ipx_route *rt) 165{ 166 atomic_inc(&rt->refcnt); 167} 168 169static __inline__ void ipxrtr_put(struct ipx_route *rt) 170{ 171 if (atomic_dec_and_test(&rt->refcnt)) 172 kfree(rt); 173} 174#endif /* _NET_INET_IPX_H_ */ 175