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171 lines
4.3 KiB
171 lines
4.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _NET_INET_IPX_H_ |
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#define _NET_INET_IPX_H_ |
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/* |
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* The following information is in its entirety obtained from: |
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* |
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* Novell 'IPX Router Specification' Version 1.10 |
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* Part No. 107-000029-001 |
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* |
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* Which is available from ftp.novell.com |
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*/ |
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#include <linux/netdevice.h> |
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#include <net/datalink.h> |
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#include <linux/ipx.h> |
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#include <linux/list.h> |
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#include <linux/slab.h> |
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#include <linux/refcount.h> |
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struct ipx_address { |
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__be32 net; |
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__u8 node[IPX_NODE_LEN]; |
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__be16 sock; |
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}; |
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#define ipx_broadcast_node "\377\377\377\377\377\377" |
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#define ipx_this_node "\0\0\0\0\0\0" |
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#define IPX_MAX_PPROP_HOPS 8 |
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struct ipxhdr { |
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__be16 ipx_checksum __packed; |
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#define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) |
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__be16 ipx_pktsize __packed; |
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__u8 ipx_tctrl; |
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__u8 ipx_type; |
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#define IPX_TYPE_UNKNOWN 0x00 |
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#define IPX_TYPE_RIP 0x01 /* may also be 0 */ |
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#define IPX_TYPE_SAP 0x04 /* may also be 0 */ |
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#define IPX_TYPE_SPX 0x05 /* SPX protocol */ |
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#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ |
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#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ |
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struct ipx_address ipx_dest __packed; |
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struct ipx_address ipx_source __packed; |
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}; |
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/* From af_ipx.c */ |
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extern int sysctl_ipx_pprop_broadcasting; |
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struct ipx_interface { |
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/* IPX address */ |
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__be32 if_netnum; |
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unsigned char if_node[IPX_NODE_LEN]; |
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refcount_t refcnt; |
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/* physical device info */ |
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struct net_device *if_dev; |
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struct datalink_proto *if_dlink; |
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__be16 if_dlink_type; |
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/* socket support */ |
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unsigned short if_sknum; |
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struct hlist_head if_sklist; |
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spinlock_t if_sklist_lock; |
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/* administrative overhead */ |
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int if_ipx_offset; |
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unsigned char if_internal; |
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unsigned char if_primary; |
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struct list_head node; /* node in ipx_interfaces list */ |
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}; |
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struct ipx_route { |
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__be32 ir_net; |
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struct ipx_interface *ir_intrfc; |
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unsigned char ir_routed; |
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unsigned char ir_router_node[IPX_NODE_LEN]; |
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struct list_head node; /* node in ipx_routes list */ |
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refcount_t refcnt; |
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}; |
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struct ipx_cb { |
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u8 ipx_tctrl; |
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__be32 ipx_dest_net; |
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__be32 ipx_source_net; |
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struct { |
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__be32 netnum; |
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int index; |
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} last_hop; |
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}; |
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#include <net/sock.h> |
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struct ipx_sock { |
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/* struct sock has to be the first member of ipx_sock */ |
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struct sock sk; |
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struct ipx_address dest_addr; |
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struct ipx_interface *intrfc; |
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__be16 port; |
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#ifdef CONFIG_IPX_INTERN |
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unsigned char node[IPX_NODE_LEN]; |
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#endif |
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unsigned short type; |
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/* |
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* To handle special ncp connection-handling sockets for mars_nwe, |
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* the connection number must be stored in the socket. |
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*/ |
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unsigned short ipx_ncp_conn; |
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}; |
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static inline struct ipx_sock *ipx_sk(struct sock *sk) |
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{ |
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return (struct ipx_sock *)sk; |
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} |
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#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) |
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#define IPX_MIN_EPHEMERAL_SOCKET 0x4000 |
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#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff |
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extern struct list_head ipx_routes; |
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extern rwlock_t ipx_routes_lock; |
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extern struct list_head ipx_interfaces; |
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struct ipx_interface *ipx_interfaces_head(void); |
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extern spinlock_t ipx_interfaces_lock; |
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extern struct ipx_interface *ipx_primary_net; |
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int ipx_proc_init(void); |
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void ipx_proc_exit(void); |
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const char *ipx_frame_name(__be16); |
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const char *ipx_device_name(struct ipx_interface *intrfc); |
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static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) |
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{ |
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refcount_inc(&intrfc->refcnt); |
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} |
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void ipxitf_down(struct ipx_interface *intrfc); |
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struct ipx_interface *ipxitf_find_using_net(__be32 net); |
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int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node); |
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__be16 ipx_cksum(struct ipxhdr *packet, int length); |
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int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc, |
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unsigned char *node); |
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void ipxrtr_del_routes(struct ipx_interface *intrfc); |
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int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx, |
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struct msghdr *msg, size_t len, int noblock); |
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int ipxrtr_route_skb(struct sk_buff *skb); |
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struct ipx_route *ipxrtr_lookup(__be32 net); |
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int ipxrtr_ioctl(unsigned int cmd, void __user *arg); |
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static __inline__ void ipxitf_put(struct ipx_interface *intrfc) |
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{ |
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if (refcount_dec_and_test(&intrfc->refcnt)) |
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ipxitf_down(intrfc); |
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} |
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static __inline__ void ipxrtr_hold(struct ipx_route *rt) |
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{ |
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refcount_inc(&rt->refcnt); |
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} |
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static __inline__ void ipxrtr_put(struct ipx_route *rt) |
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{ |
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if (refcount_dec_and_test(&rt->refcnt)) |
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kfree(rt); |
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} |
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#endif /* _NET_INET_IPX_H_ */
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