diff options
Diffstat (limited to 'kernel/include/net/ipx.h')
| -rw-r--r-- | kernel/include/net/ipx.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/kernel/include/net/ipx.h b/kernel/include/net/ipx.h new file mode 100644 index 000000000..e5cff6811 --- /dev/null +++ b/kernel/include/net/ipx.h @@ -0,0 +1,174 @@ +#ifndef _NET_INET_IPX_H_ +#define _NET_INET_IPX_H_ +/* + * The following information is in its entirety obtained from: + * + * Novell 'IPX Router Specification' Version 1.10 + * Part No. 107-000029-001 + * + * Which is available from ftp.novell.com + */ + +#include <linux/netdevice.h> +#include <net/datalink.h> +#include <linux/ipx.h> +#include <linux/list.h> +#include <linux/slab.h> + +struct ipx_address { + __be32 net; + __u8 node[IPX_NODE_LEN]; + __be16 sock; +}; + +#define ipx_broadcast_node "\377\377\377\377\377\377" +#define ipx_this_node "\0\0\0\0\0\0" + +#define IPX_MAX_PPROP_HOPS 8 + +struct ipxhdr { + __be16 ipx_checksum __packed; +#define IPX_NO_CHECKSUM cpu_to_be16(0xFFFF) + __be16 ipx_pktsize __packed; + __u8 ipx_tctrl; + __u8 ipx_type; +#define IPX_TYPE_UNKNOWN 0x00 +#define IPX_TYPE_RIP 0x01 /* may also be 0 */ +#define IPX_TYPE_SAP 0x04 /* may also be 0 */ +#define IPX_TYPE_SPX 0x05 /* SPX protocol */ +#define IPX_TYPE_NCP 0x11 /* $lots for docs on this (SPIT) */ +#define IPX_TYPE_PPROP 0x14 /* complicated flood fill brdcast */ + struct ipx_address ipx_dest __packed; + struct ipx_address ipx_source __packed; +}; + +/* From af_ipx.c */ +extern int sysctl_ipx_pprop_broadcasting; + +static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb) +{ + return (struct ipxhdr *)skb_transport_header(skb); +} + +struct ipx_interface { + /* IPX address */ + __be32 if_netnum; + unsigned char if_node[IPX_NODE_LEN]; + atomic_t refcnt; + + /* physical device info */ + struct net_device *if_dev; + struct datalink_proto *if_dlink; + __be16 if_dlink_type; + + /* socket support */ + unsigned short if_sknum; + struct hlist_head if_sklist; + spinlock_t if_sklist_lock; + + /* administrative overhead */ + int if_ipx_offset; + unsigned char if_internal; + unsigned char if_primary; + + struct list_head node; /* node in ipx_interfaces list */ +}; + +struct ipx_route { + __be32 ir_net; + struct ipx_interface *ir_intrfc; + unsigned char ir_routed; + unsigned char ir_router_node[IPX_NODE_LEN]; + struct list_head node; /* node in ipx_routes list */ + atomic_t refcnt; +}; + +struct ipx_cb { + u8 ipx_tctrl; + __be32 ipx_dest_net; + __be32 ipx_source_net; + struct { + __be32 netnum; + int index; + } last_hop; +}; + +#include <net/sock.h> + +struct ipx_sock { + /* struct sock has to be the first member of ipx_sock */ + struct sock sk; + struct ipx_address dest_addr; + struct ipx_interface *intrfc; + __be16 port; +#ifdef CONFIG_IPX_INTERN + unsigned char node[IPX_NODE_LEN]; +#endif + unsigned short type; + /* + * To handle special ncp connection-handling sockets for mars_nwe, + * the connection number must be stored in the socket. + */ + unsigned short ipx_ncp_conn; +}; + +static inline struct ipx_sock *ipx_sk(struct sock *sk) +{ + return (struct ipx_sock *)sk; +} + +#define IPX_SKB_CB(__skb) ((struct ipx_cb *)&((__skb)->cb[0])) + +#define IPX_MIN_EPHEMERAL_SOCKET 0x4000 +#define IPX_MAX_EPHEMERAL_SOCKET 0x7fff + +extern struct list_head ipx_routes; +extern rwlock_t ipx_routes_lock; + +extern struct list_head ipx_interfaces; +struct ipx_interface *ipx_interfaces_head(void); +extern spinlock_t ipx_interfaces_lock; + +extern struct ipx_interface *ipx_primary_net; + +int ipx_proc_init(void); +void ipx_proc_exit(void); + +const char *ipx_frame_name(__be16); +const char *ipx_device_name(struct ipx_interface *intrfc); + +static __inline__ void ipxitf_hold(struct ipx_interface *intrfc) +{ + atomic_inc(&intrfc->refcnt); +} + +void ipxitf_down(struct ipx_interface *intrfc); +struct ipx_interface *ipxitf_find_using_net(__be32 net); +int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node); +__be16 ipx_cksum(struct ipxhdr *packet, int length); +int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc, + unsigned char *node); +void ipxrtr_del_routes(struct ipx_interface *intrfc); +int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx, + struct msghdr *msg, size_t len, int noblock); +int ipxrtr_route_skb(struct sk_buff *skb); +struct ipx_route *ipxrtr_lookup(__be32 net); +int ipxrtr_ioctl(unsigned int cmd, void __user *arg); + +static __inline__ void ipxitf_put(struct ipx_interface *intrfc) +{ + if (atomic_dec_and_test(&intrfc->refcnt)) + ipxitf_down(intrfc); +} + +static __inline__ void ipxrtr_hold(struct ipx_route *rt) +{ + atomic_inc(&rt->refcnt); +} + +static __inline__ void ipxrtr_put(struct ipx_route *rt) +{ + if (atomic_dec_and_test(&rt->refcnt)) + kfree(rt); +} +#endif /* _NET_INET_IPX_H_ */ |