| #ifndef _NET_DN_H | |
| #define _NET_DN_H | |
| #include <linux/dn.h> | |
| #include <net/sock.h> | |
| #include <asm/byteorder.h> | |
| #define dn_ntohs(x) le16_to_cpu(x) | |
| #define dn_htons(x) cpu_to_le16(x) | |
| 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 dn_htons(ethaddr[4] | (ethaddr[5] << 8)); | |
| } | |
| 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 = dn_ntohs(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 flowi *fl, struct dn_scp *scp) | |
| { | |
| fl->uli_u.dnports.sport = scp->addrloc; | |
| fl->uli_u.dnports.dport = scp->addrrem; | |
| } | |
| extern unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu); | |
| #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(__u16, 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 __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 int sysctl_decnet_mem[3]; | |
| extern int sysctl_decnet_wmem[3]; | |
| extern int sysctl_decnet_rmem[3]; | |
| #endif /* _NET_DN_H */ |