Release 4.12 include/net/dn_nsp.h
#ifndef _NET_DN_NSP_H
#define _NET_DN_NSP_H
/******************************************************************************
(c) 1995-1998 E.M. Serrat emserrat@geocities.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*******************************************************************************/
/* dn_nsp.c functions prototyping */
void dn_nsp_send_data_ack(struct sock *sk);
void dn_nsp_send_oth_ack(struct sock *sk);
void dn_nsp_delayed_ack(struct sock *sk);
void dn_send_conn_ack(struct sock *sk);
void dn_send_conn_conf(struct sock *sk, gfp_t gfp);
void dn_nsp_send_disc(struct sock *sk, unsigned char type,
unsigned short reason, gfp_t gfp);
void dn_nsp_return_disc(struct sk_buff *skb, unsigned char type,
unsigned short reason);
void dn_nsp_send_link(struct sock *sk, unsigned char lsflags, char fcval);
void dn_nsp_send_conninit(struct sock *sk, unsigned char flags);
void dn_nsp_output(struct sock *sk);
int dn_nsp_check_xmit_queue(struct sock *sk, struct sk_buff *skb,
struct sk_buff_head *q, unsigned short acknum);
void dn_nsp_queue_xmit(struct sock *sk, struct sk_buff *skb, gfp_t gfp,
int oob);
unsigned long dn_nsp_persist(struct sock *sk);
int dn_nsp_xmit_timeout(struct sock *sk);
int dn_nsp_rx(struct sk_buff *);
int dn_nsp_backlog_rcv(struct sock *sk, struct sk_buff *skb);
struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);
struct sk_buff *dn_alloc_send_skb(struct sock *sk, size_t *size, int noblock,
long timeo, int *err);
#define NSP_REASON_OK 0
/* No error */
#define NSP_REASON_NR 1
/* No resources */
#define NSP_REASON_UN 2
/* Unrecognised node name */
#define NSP_REASON_SD 3
/* Node shutting down */
#define NSP_REASON_ID 4
/* Invalid destination end user */
#define NSP_REASON_ER 5
/* End user lacks resources */
#define NSP_REASON_OB 6
/* Object too busy */
#define NSP_REASON_US 7
/* Unspecified error */
#define NSP_REASON_TP 8
/* Third-Party abort */
#define NSP_REASON_EA 9
/* End user has aborted the link */
#define NSP_REASON_IF 10
/* Invalid node name format */
#define NSP_REASON_LS 11
/* Local node shutdown */
#define NSP_REASON_LL 32
/* Node lacks logical-link resources */
#define NSP_REASON_LE 33
/* End user lacks logical-link resources */
#define NSP_REASON_UR 34
/* Unacceptable RQSTRID or PASSWORD field */
#define NSP_REASON_UA 36
/* Unacceptable ACCOUNT field */
#define NSP_REASON_TM 38
/* End user timed out logical link */
#define NSP_REASON_NU 39
/* Node unreachable */
#define NSP_REASON_NL 41
/* No-link message */
#define NSP_REASON_DC 42
/* Disconnect confirm */
#define NSP_REASON_IO 43
/* Image data field overflow */
#define NSP_DISCINIT 0x38
#define NSP_DISCCONF 0x48
/*------------------------- NSP - messages ------------------------------*/
/* Data Messages */
/*---------------*/
/* Data Messages (data segment/interrupt/link service) */
struct nsp_data_seg_msg {
__u8 msgflg;
__le16 dstaddr;
__le16 srcaddr;
} __packed;
struct nsp_data_opt_msg {
__le16 acknum;
__le16 segnum;
__le16 lsflgs;
} __packed;
struct nsp_data_opt_msg1 {
__le16 acknum;
__le16 segnum;
} __packed;
/* Acknowledgment Message (data/other data) */
struct nsp_data_ack_msg {
__u8 msgflg;
__le16 dstaddr;
__le16 srcaddr;
__le16 acknum;
} __packed;
/* Connect Acknowledgment Message */
struct nsp_conn_ack_msg {
__u8 msgflg;
__le16 dstaddr;
} __packed;
/* Connect Initiate/Retransmit Initiate/Connect Confirm */
struct nsp_conn_init_msg {
__u8 msgflg;
#define NSP_CI 0x18 /* Connect Initiate */
#define NSP_RCI 0x68 /* Retrans. Conn Init */
__le16 dstaddr;
__le16 srcaddr;
__u8 services;
#define NSP_FC_NONE 0x00 /* Flow Control None */
#define NSP_FC_SRC 0x04 /* Seg Req. Count */
#define NSP_FC_SCMC 0x08 /* Sess. Control Mess */
#define NSP_FC_MASK 0x0c /* FC type mask */
__u8 info;
__le16 segsize;
} __packed;
/* Disconnect Initiate/Disconnect Confirm */
struct nsp_disconn_init_msg {
__u8 msgflg;
__le16 dstaddr;
__le16 srcaddr;
__le16 reason;
} __packed;
struct srcobj_fmt {
__u8 format;
__u8 task;
__le16 grpcode;
__le16 usrcode;
__u8 dlen;
} __packed;
/*
* A collection of functions for manipulating the sequence
* numbers used in NSP. Similar in operation to the functions
* of the same name in TCP.
*/
static __inline__ int dn_before(__u16 seq1, __u16 seq2)
{
seq1 &= 0x0fff;
seq2 &= 0x0fff;
return (int)((seq1 - seq2) & 0x0fff) > 2048;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 34 | 91.89% | 1 | 33.33% |
| Steven Whitehouse | 2 | 5.41% | 1 | 33.33% |
| David S. Miller | 1 | 2.70% | 1 | 33.33% |
| Total | 37 | 100.00% | 3 | 100.00% |
static __inline__ int dn_after(__u16 seq1, __u16 seq2)
{
seq1 &= 0x0fff;
seq2 &= 0x0fff;
return (int)((seq2 - seq1) & 0x0fff) > 2048;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 34 | 91.89% | 1 | 33.33% |
| Steven Whitehouse | 2 | 5.41% | 1 | 33.33% |
| David S. Miller | 1 | 2.70% | 1 | 33.33% |
| Total | 37 | 100.00% | 3 | 100.00% |
static __inline__ int dn_equal(__u16 seq1, __u16 seq2)
{
return ((seq1 ^ seq2) & 0x0fff) == 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 23 | 88.46% | 1 | 33.33% |
| Steven Whitehouse | 2 | 7.69% | 1 | 33.33% |
| David S. Miller | 1 | 3.85% | 1 | 33.33% |
| Total | 26 | 100.00% | 3 | 100.00% |
static __inline__ int dn_before_or_equal(__u16 seq1, __u16 seq2)
{
return (dn_before(seq1, seq2) || dn_equal(seq1, seq2));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 25 | 83.33% | 1 | 33.33% |
| David S. Miller | 3 | 10.00% | 1 | 33.33% |
| Steven Whitehouse | 2 | 6.67% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static __inline__ void seq_add(__u16 *seq, __u16 off)
{
(*seq) += off;
(*seq) &= 0x0fff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 22 | 78.57% | 1 | 33.33% |
| Linus Torvalds | 4 | 14.29% | 1 | 33.33% |
| Steven Whitehouse | 2 | 7.14% | 1 | 33.33% |
| Total | 28 | 100.00% | 3 | 100.00% |
static __inline__ int seq_next(__u16 seq1, __u16 seq2)
{
return dn_equal(seq1 + 1, seq2);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 15 | 65.22% | 1 | 25.00% |
| Linus Torvalds | 5 | 21.74% | 1 | 25.00% |
| Steven Whitehouse | 2 | 8.70% | 1 | 25.00% |
| David S. Miller | 1 | 4.35% | 1 | 25.00% |
| Total | 23 | 100.00% | 4 | 100.00% |
/*
* Can we delay the ack ?
*/
static __inline__ int sendack(__u16 seq)
{
return (int)((seq & 0x1000) ? 0 : 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 25 | 96.15% | 1 | 50.00% |
| Steven Whitehouse | 1 | 3.85% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
/*
* Is socket congested ?
*/
static __inline__ int dn_congested(struct sock *sk)
{
return atomic_read(&sk->sk_rmem_alloc) > (sk->sk_rcvbuf >> 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 27 | 93.10% | 1 | 50.00% |
| Arnaldo Carvalho de Melo | 2 | 6.90% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
#define DN_MAX_NSP_DATA_HEADER (11)
#endif /* _NET_DN_NSP_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 679 | 86.06% | 3 | 23.08% |
| Steven Whitehouse | 46 | 5.83% | 2 | 15.38% |
| Linus Torvalds | 23 | 2.92% | 1 | 7.69% |
| Jan Blunck | 16 | 2.03% | 1 | 7.69% |
| David S. Miller | 8 | 1.01% | 2 | 15.38% |
| Eric Dumazet | 8 | 1.01% | 1 | 7.69% |
| Al Viro | 4 | 0.51% | 1 | 7.69% |
| Patrick Caulfield | 3 | 0.38% | 1 | 7.69% |
| Arnaldo Carvalho de Melo | 2 | 0.25% | 1 | 7.69% |
| Total | 789 | 100.00% | 13 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.