Release 4.14 net/lapb/lapb_timer.c
/*
* LAPB release 002
*
* This code REQUIRES 2.1.15 or higher/ NET3.038
*
* This module:
* This module 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 (at your option) any later version.
*
* History
* LAPB 001 Jonathan Naylor Started Coding
* LAPB 002 Jonathan Naylor New timer architecture.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/inet.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/uaccess.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <net/lapb.h>
static void lapb_t1timer_expiry(unsigned long);
static void lapb_t2timer_expiry(unsigned long);
void lapb_start_t1timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t1timer);
lapb->t1timer.data = (unsigned long)lapb;
lapb->t1timer.function = &lapb_t1timer_expiry;
lapb->t1timer.expires = jiffies + lapb->t1;
add_timer(&lapb->t1timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 58 | 98.31% | 2 | 66.67% |
| Arnaldo Carvalho de Melo | 1 | 1.69% | 1 | 33.33% |
| Total | 59 | 100.00% | 3 | 100.00% |
void lapb_start_t2timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t2timer);
lapb->t2timer.data = (unsigned long)lapb;
lapb->t2timer.function = &lapb_t2timer_expiry;
lapb->t2timer.expires = jiffies + lapb->t2;
add_timer(&lapb->t2timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 58 | 98.31% | 3 | 75.00% |
| Arnaldo Carvalho de Melo | 1 | 1.69% | 1 | 25.00% |
| Total | 59 | 100.00% | 4 | 100.00% |
void lapb_stop_t1timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t1timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 17 | 94.44% | 2 | 66.67% |
| Arnaldo Carvalho de Melo | 1 | 5.56% | 1 | 33.33% |
| Total | 18 | 100.00% | 3 | 100.00% |
void lapb_stop_t2timer(struct lapb_cb *lapb)
{
del_timer(&lapb->t2timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 17 | 94.44% | 2 | 66.67% |
| Arnaldo Carvalho de Melo | 1 | 5.56% | 1 | 33.33% |
| Total | 18 | 100.00% | 3 | 100.00% |
int lapb_t1timer_running(struct lapb_cb *lapb)
{
return timer_pending(&lapb->t1timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 18 | 94.74% | 3 | 75.00% |
| Arnaldo Carvalho de Melo | 1 | 5.26% | 1 | 25.00% |
| Total | 19 | 100.00% | 4 | 100.00% |
static void lapb_t2timer_expiry(unsigned long param)
{
struct lapb_cb *lapb = (struct lapb_cb *)param;
if (lapb->condition & LAPB_ACK_PENDING_CONDITION) {
lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
lapb_timeout_response(lapb);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 42 | 95.45% | 2 | 66.67% |
| Arnaldo Carvalho de Melo | 2 | 4.55% | 1 | 33.33% |
| Total | 44 | 100.00% | 3 | 100.00% |
static void lapb_t1timer_expiry(unsigned long param)
{
struct lapb_cb *lapb = (struct lapb_cb *)param;
switch (lapb->state) {
/*
* If we are a DCE, keep going DM .. DM .. DM
*/
case LAPB_STATE_0:
if (lapb->mode & LAPB_DCE)
lapb_send_control(lapb, LAPB_DM, LAPB_POLLOFF, LAPB_RESPONSE);
break;
/*
* Awaiting connection state, send SABM(E), up to N2 times.
*/
case LAPB_STATE_1:
if (lapb->n2count == lapb->n2) {
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_disconnect_indication(lapb, LAPB_TIMEDOUT);
lapb_dbg(0, "(%p) S1 -> S0\n", lapb->dev);
return;
} else {
lapb->n2count++;
if (lapb->mode & LAPB_EXTENDED) {
lapb_dbg(1, "(%p) S1 TX SABME(1)\n",
lapb->dev);
lapb_send_control(lapb, LAPB_SABME, LAPB_POLLON, LAPB_COMMAND);
} else {
lapb_dbg(1, "(%p) S1 TX SABM(1)\n",
lapb->dev);
lapb_send_control(lapb, LAPB_SABM, LAPB_POLLON, LAPB_COMMAND);
}
}
break;
/*
* Awaiting disconnection state, send DISC, up to N2 times.
*/
case LAPB_STATE_2:
if (lapb->n2count == lapb->n2) {
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_disconnect_confirmation(lapb, LAPB_TIMEDOUT);
lapb_dbg(0, "(%p) S2 -> S0\n", lapb->dev);
return;
} else {
lapb->n2count++;
lapb_dbg(1, "(%p) S2 TX DISC(1)\n", lapb->dev);
lapb_send_control(lapb, LAPB_DISC, LAPB_POLLON, LAPB_COMMAND);
}
break;
/*
* Data transfer state, restransmit I frames, up to N2 times.
*/
case LAPB_STATE_3:
if (lapb->n2count == lapb->n2) {
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_stop_t2timer(lapb);
lapb_disconnect_indication(lapb, LAPB_TIMEDOUT);
lapb_dbg(0, "(%p) S3 -> S0\n", lapb->dev);
return;
} else {
lapb->n2count++;
lapb_requeue_frames(lapb);
lapb_kick(lapb);
}
break;
/*
* Frame reject state, restransmit FRMR frames, up to N2 times.
*/
case LAPB_STATE_4:
if (lapb->n2count == lapb->n2) {
lapb_clear_queues(lapb);
lapb->state = LAPB_STATE_0;
lapb_disconnect_indication(lapb, LAPB_TIMEDOUT);
lapb_dbg(0, "(%p) S4 -> S0\n", lapb->dev);
return;
} else {
lapb->n2count++;
lapb_transmit_frmr(lapb);
}
break;
}
lapb_start_t1timer(lapb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 336 | 88.89% | 4 | 50.00% |
| Joe Perches | 28 | 7.41% | 1 | 12.50% |
| Al Viro | 7 | 1.85% | 1 | 12.50% |
| Josselin Costanzi | 5 | 1.32% | 1 | 12.50% |
| Arnaldo Carvalho de Melo | 2 | 0.53% | 1 | 12.50% |
| Total | 378 | 100.00% | 8 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 615 | 91.38% | 5 | 45.45% |
| Joe Perches | 35 | 5.20% | 1 | 9.09% |
| Arnaldo Carvalho de Melo | 9 | 1.34% | 1 | 9.09% |
| Al Viro | 7 | 1.04% | 1 | 9.09% |
| Josselin Costanzi | 5 | 0.74% | 1 | 9.09% |
| Linus Torvalds | 1 | 0.15% | 1 | 9.09% |
| Rusty Russell | 1 | 0.15% | 1 | 9.09% |
| Total | 673 | 100.00% | 11 | 100.00% |
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