238 lines
7.0 KiB
C
238 lines
7.0 KiB
C
|
#ifndef _NET_DN_H
|
||
|
|
#define _NET_DN_H
|
||
|
|
|
||
|
|
#include <linux/dn.h>
|
||
|
|
#include <net/sock.h>
|
||
|
|
#include <net/flow.h>
|
||
|
|
#include <asm/byteorder.h>
|
||
|
|
#include <asm/unaligned.h>
|
||
|
|
|
||
|
|
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 */
|
||
|
|
|
||
|
|
__le16 addrloc;
|
||
|
|
__le16 addrrem;
|
||
|
|
__u16 numdat;
|
||
|
|
__u16 numoth;
|
||
|
|
__u16 numoth_rcv;
|
||
|
|
__u16 numdat_rcv;
|
||
|
|
__u16 ackxmt_dat;
|
||
|
|
__u16 ackxmt_oth;
|
||
|
|
__u16 ackrcv_dat;
|
||
|
|
__u16 ackrcv_oth;
|
||
|
|
__u8 flowrem_sw;
|
||
|
|
__u8 flowloc_sw;
|
||
|
|
#define DN_SEND 2
|
||
|
|
#define DN_DONTSEND 1
|
||
|
|
#define DN_NOCHANGE 0
|
||
|
|
__u16 flowrem_dat;
|
||
|
|
__u16 flowrem_oth;
|
||
|
|
__u16 flowloc_dat;
|
||
|
|
__u16 flowloc_oth;
|
||
|
|
__u8 services_rem;
|
||
|
|
__u8 services_loc;
|
||
|
|
__u8 info_rem;
|
||
|
|
__u8 info_loc;
|
||
|
|
|
||
|
|
__u16 segsize_rem;
|
||
|
|
__u16 segsize_loc;
|
||
|
|
|
||
|
|
__u8 nonagle;
|
||
|
|
__u8 multi_ireq;
|
||
|
|
__u8 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);
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline struct dn_scp *DN_SK(struct sock *sk)
|
||
|
|
{
|
||
|
|
return (struct dn_scp *)(sk + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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 {
|
||
|
|
__le16 dst;
|
||
|
|
__le16 src;
|
||
|
|
__u16 hops;
|
||
|
|
__le16 dst_port;
|
||
|
|
__le16 src_port;
|
||
|
|
__u8 services;
|
||
|
|
__u8 info;
|
||
|
|
__u8 rt_flags;
|
||
|
|
__u8 nsp_flags;
|
||
|
|
__u16 segsize;
|
||
|
|
__u16 segnum;
|
||
|
|
__u16 xmit_count;
|
||
|
|
unsigned long stamp;
|
||
|
|
int iif;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline __le16 dn_eth2dn(unsigned char *ethaddr)
|
||
|
|
{
|
||
|
|
return get_unaligned((__le16 *)(ethaddr + 4));
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline __le16 dn_saddr2dn(struct sockaddr_dn *saddr)
|
||
|
|
{
|
||
|
|
return *(__le16 *)saddr->sdn_nodeaddr;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void dn_dn2eth(unsigned char *ethaddr, __le16 addr)
|
||
|
|
{
|
||
|
|
__u16 a = le16_to_cpu(addr);
|
||
|
|
ethaddr[0] = 0xAA;
|
||
|
|
ethaddr[1] = 0x00;
|
||
|
|
ethaddr[2] = 0x04;
|
||
|
|
ethaddr[3] = 0x00;
|
||
|
|
ethaddr[4] = (__u8)(a & 0xff);
|
||
|
|
ethaddr[5] = (__u8)(a >> 8);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void dn_sk_ports_copy(struct flowidn *fld, struct dn_scp *scp)
|
||
|
|
{
|
||
|
|
fld->fld_sport = scp->addrloc;
|
||
|
|
fld->fld_dport = scp->addrrem;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned int dn_mss_from_pmtu(struct net_device *dev, int mtu);
|
||
|
|
void dn_register_sysctl(void);
|
||
|
|
void dn_unregister_sysctl(void);
|
||
|
|
|
||
|
|
#define DN_MENUVER_ACC 0x01
|
||
|
|
#define DN_MENUVER_USR 0x02
|
||
|
|
#define DN_MENUVER_PRX 0x04
|
||
|
|
#define DN_MENUVER_UIC 0x08
|
||
|
|
|
||
|
|
struct sock *dn_sklist_find_listener(struct sockaddr_dn *addr);
|
||
|
|
struct sock *dn_find_by_skb(struct sk_buff *skb);
|
||
|
|
#define DN_ASCBUF_LEN 9
|
||
|
|
char *dn_addr2asc(__u16, char *);
|
||
|
|
int dn_destroy_timer(struct sock *sk);
|
||
|
|
|
||
|
|
int dn_sockaddr2username(struct sockaddr_dn *addr, unsigned char *buf,
|
||
|
|
unsigned char type);
|
||
|
|
int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *addr,
|
||
|
|
unsigned char *type);
|
||
|
|
|
||
|
|
void dn_start_slow_timer(struct sock *sk);
|
||
|
|
void dn_stop_slow_timer(struct sock *sk);
|
||
|
|
|
||
|
|
extern __le16 decnet_address;
|
||
|
|
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;
|
||
|
|
|
||
|
|
extern long sysctl_decnet_mem[3];
|
||
|
|
extern int sysctl_decnet_wmem[3];
|
||
|
|
extern int sysctl_decnet_rmem[3];
|
||
|
|
|
||
|
|
#endif /* _NET_DN_H */
|