dn.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:7k
- #ifndef _NET_DN_H
- #define _NET_DN_H
- #include <linux/dn.h>
- #include <asm/byteorder.h>
- typedef unsigned short dn_address;
- #define dn_ntohs(x) le16_to_cpu((unsigned short)(x))
- #define dn_htons(x) cpu_to_le16((unsigned short)(x))
- #define DN_SK(sk) (&sk->protinfo.dn)
- struct dn_scp /* Session Control Port */
- {
- unsigned char state;
- #define DN_O 1 /* Open */
- #define DN_CR 2 /* Connect Receive */
- #define DN_DR 3 /* Disconnect Reject */
- #define DN_DRC 4 /* Discon. Rej. Complete*/
- #define DN_CC 5 /* Connect Confirm */
- #define DN_CI 6 /* Connect Initiate */
- #define DN_NR 7 /* No resources */
- #define DN_NC 8 /* No communication */
- #define DN_CD 9 /* Connect Delivery */
- #define DN_RJ 10 /* Rejected */
- #define DN_RUN 11 /* Running */
- #define DN_DI 12 /* Disconnect Initiate */
- #define DN_DIC 13 /* Disconnect Complete */
- #define DN_DN 14 /* Disconnect Notificat */
- #define DN_CL 15 /* Closed */
- #define DN_CN 16 /* Closed Notification */
- unsigned short addrloc;
- unsigned short addrrem;
- unsigned short numdat;
- unsigned short numoth;
- unsigned short numoth_rcv;
- unsigned short numdat_rcv;
- unsigned short ackxmt_dat;
- unsigned short ackxmt_oth;
- unsigned short ackrcv_dat;
- unsigned short ackrcv_oth;
- unsigned char flowrem_sw;
- unsigned char flowloc_sw;
- #define DN_SEND 2
- #define DN_DONTSEND 1
- #define DN_NOCHANGE 0
- unsigned short flowrem_dat;
- unsigned short flowrem_oth;
- unsigned short flowloc_dat;
- unsigned short flowloc_oth;
- unsigned char services_rem;
- unsigned char services_loc;
- unsigned char info_rem;
- unsigned char info_loc;
- unsigned short segsize_rem;
- unsigned short segsize_loc;
- unsigned char nonagle;
- unsigned char multi_ireq;
- unsigned char accept_mode;
- unsigned long seg_total; /* Running total of current segment */
- struct optdata_dn conndata_in;
- struct optdata_dn conndata_out;
- struct optdata_dn discdata_in;
- struct optdata_dn discdata_out;
- struct accessdata_dn accessdata;
- struct sockaddr_dn addr; /* Local address */
- struct sockaddr_dn peer; /* Remote address */
- /*
- * In this case the RTT estimation is not specified in the
- * docs, nor is any back off algorithm. Here we follow well
- * known tcp algorithms with a few small variations.
- *
- * snd_window: Max number of packets we send before we wait for
- * an ack to come back. This will become part of a
- * more complicated scheme when we support flow
- * control.
- *
- * nsp_srtt: Round-Trip-Time (x8) in jiffies. This is a rolling
- * average.
- * nsp_rttvar: Round-Trip-Time-Varience (x4) in jiffies. This is the
- * varience of the smoothed average (but calculated in
- * a simpler way than for normal statistical varience
- * calculations).
- *
- * nsp_rxtshift: Backoff counter. Value is zero normally, each time
- * a packet is lost is increases by one until an ack
- * is received. Its used to index an array of backoff
- * multipliers.
- */
- #define NSP_MIN_WINDOW 1
- #define NSP_MAX_WINDOW (0x07fe)
- unsigned long max_window;
- unsigned long snd_window;
- #define NSP_INITIAL_SRTT (HZ)
- unsigned long nsp_srtt;
- #define NSP_INITIAL_RTTVAR (HZ*3)
- unsigned long nsp_rttvar;
- #define NSP_MAXRXTSHIFT 12
- unsigned long nsp_rxtshift;
- /*
- * Output queues, one for data, one for otherdata/linkservice
- */
- struct sk_buff_head data_xmit_queue;
- struct sk_buff_head other_xmit_queue;
- /*
- * Input queue for other data
- */
- struct sk_buff_head other_receive_queue;
- int other_report;
- /*
- * Stuff to do with the slow timer
- */
- unsigned long stamp; /* time of last transmit */
- unsigned long persist;
- int (*persist_fxn)(struct sock *sk);
- unsigned long keepalive;
- void (*keepalive_fxn)(struct sock *sk);
- /*
- * This stuff is for the fast timer for delayed acks
- */
- struct timer_list delack_timer;
- int delack_pending;
- void (*delack_fxn)(struct sock *sk);
- };
- /*
- * src,dst : Source and Destination DECnet addresses
- * hops : Number of hops through the network
- * dst_port, src_port : NSP port numbers
- * services, info : Useful data extracted from conninit messages
- * rt_flags : Routing flags byte
- * nsp_flags : NSP layer flags byte
- * segsize : Size of segment
- * segnum : Number, for data, otherdata and linkservice
- * xmit_count : Number of times we've transmitted this skb
- * stamp : Time stamp of most recent transmission, used in RTT calculations
- * iif: Input interface number
- *
- * As a general policy, this structure keeps all addresses in network
- * byte order, and all else in host byte order. Thus dst, src, dst_port
- * and src_port are in network order. All else is in host order.
- *
- */
- #define DN_SKB_CB(skb) ((struct dn_skb_cb *)(skb)->cb)
- struct dn_skb_cb {
- unsigned short dst;
- unsigned short src;
- unsigned short hops;
- unsigned short dst_port;
- unsigned short src_port;
- unsigned char services;
- unsigned char info;
- unsigned char rt_flags;
- unsigned char nsp_flags;
- unsigned short segsize;
- unsigned short segnum;
- unsigned short xmit_count;
- unsigned long stamp;
- int iif;
- };
- static __inline__ dn_address dn_eth2dn(unsigned char *ethaddr)
- {
- return ethaddr[4] | (ethaddr[5] << 8);
- }
- static __inline__ dn_address dn_saddr2dn(struct sockaddr_dn *saddr)
- {
- return *(dn_address *)saddr->sdn_nodeaddr;
- }
- static __inline__ void dn_dn2eth(unsigned char *ethaddr, dn_address addr)
- {
- ethaddr[0] = 0xAA;
- ethaddr[1] = 0x00;
- ethaddr[2] = 0x04;
- ethaddr[3] = 0x00;
- ethaddr[4] = (unsigned char)(addr & 0xff);
- ethaddr[5] = (unsigned char)(addr >> 8);
- }
- #define DN_MENUVER_ACC 0x01
- #define DN_MENUVER_USR 0x02
- #define DN_MENUVER_PRX 0x04
- #define DN_MENUVER_UIC 0x08
- extern struct sock *dn_sklist_find_listener(struct sockaddr_dn *addr);
- extern struct sock *dn_find_by_skb(struct sk_buff *skb);
- #define DN_ASCBUF_LEN 9
- extern char *dn_addr2asc(dn_address, char *);
- extern int dn_destroy_timer(struct sock *sk);
- extern int dn_sockaddr2username(struct sockaddr_dn *addr, unsigned char *buf, unsigned char type);
- extern int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *addr, unsigned char *type);
- extern void dn_start_slow_timer(struct sock *sk);
- extern void dn_stop_slow_timer(struct sock *sk);
- extern void dn_start_fast_timer(struct sock *sk);
- extern void dn_stop_fast_timer(struct sock *sk);
- extern dn_address decnet_address;
- extern unsigned char decnet_ether_address[6];
- extern int decnet_debug_level;
- extern int decnet_time_wait;
- extern int decnet_dn_count;
- extern int decnet_di_count;
- extern int decnet_dr_count;
- extern int decnet_no_fc_max_cwnd;
- #endif /* _NET_DN_H */