/*
|
/*
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* ROSE release 003
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* ROSE release 003
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*
|
*
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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* This code REQUIRES 2.1.15 or higher/ NET3.038
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*
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*
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* This module:
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* This module:
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* This module is free software; you can redistribute it and/or
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* This module is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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* 2 of the License, or (at your option) any later version.
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*
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*
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* History
|
* History
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* ROSE 001 Jonathan(G4KLX) Cloned from rose_timer.c
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* ROSE 001 Jonathan(G4KLX) Cloned from rose_timer.c
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* ROSE 003 Jonathan(G4KLX) New timer architecture.
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* ROSE 003 Jonathan(G4KLX) New timer architecture.
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*/
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*/
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|
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <linux/net.h>
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#include <net/ax25.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/sock.h>
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#include <asm/segment.h>
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#include <asm/segment.h>
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#include <asm/system.h>
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#include <asm/system.h>
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#include <linux/fcntl.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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#include <linux/netfilter.h>
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#include <linux/netfilter.h>
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#include <net/rose.h>
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#include <net/rose.h>
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|
|
static void rose_ftimer_expiry(unsigned long);
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static void rose_ftimer_expiry(unsigned long);
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static void rose_t0timer_expiry(unsigned long);
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static void rose_t0timer_expiry(unsigned long);
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|
|
void rose_start_ftimer(struct rose_neigh *neigh)
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void rose_start_ftimer(struct rose_neigh *neigh)
|
{
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{
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del_timer(&neigh->ftimer);
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del_timer(&neigh->ftimer);
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|
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neigh->ftimer.data = (unsigned long)neigh;
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neigh->ftimer.data = (unsigned long)neigh;
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neigh->ftimer.function = &rose_ftimer_expiry;
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neigh->ftimer.function = &rose_ftimer_expiry;
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neigh->ftimer.expires = jiffies + sysctl_rose_link_fail_timeout;
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neigh->ftimer.expires = jiffies + sysctl_rose_link_fail_timeout;
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|
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add_timer(&neigh->ftimer);
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add_timer(&neigh->ftimer);
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}
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}
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|
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void rose_start_t0timer(struct rose_neigh *neigh)
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void rose_start_t0timer(struct rose_neigh *neigh)
|
{
|
{
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del_timer(&neigh->t0timer);
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del_timer(&neigh->t0timer);
|
|
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neigh->t0timer.data = (unsigned long)neigh;
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neigh->t0timer.data = (unsigned long)neigh;
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neigh->t0timer.function = &rose_t0timer_expiry;
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neigh->t0timer.function = &rose_t0timer_expiry;
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neigh->t0timer.expires = jiffies + sysctl_rose_restart_request_timeout;
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neigh->t0timer.expires = jiffies + sysctl_rose_restart_request_timeout;
|
|
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add_timer(&neigh->t0timer);
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add_timer(&neigh->t0timer);
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}
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}
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|
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void rose_stop_ftimer(struct rose_neigh *neigh)
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void rose_stop_ftimer(struct rose_neigh *neigh)
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{
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{
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del_timer(&neigh->ftimer);
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del_timer(&neigh->ftimer);
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}
|
}
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|
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void rose_stop_t0timer(struct rose_neigh *neigh)
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void rose_stop_t0timer(struct rose_neigh *neigh)
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{
|
{
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del_timer(&neigh->t0timer);
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del_timer(&neigh->t0timer);
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}
|
}
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|
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int rose_ftimer_running(struct rose_neigh *neigh)
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int rose_ftimer_running(struct rose_neigh *neigh)
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{
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{
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return timer_pending(&neigh->ftimer);
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return timer_pending(&neigh->ftimer);
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}
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}
|
|
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int rose_t0timer_running(struct rose_neigh *neigh)
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int rose_t0timer_running(struct rose_neigh *neigh)
|
{
|
{
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return timer_pending(&neigh->t0timer);
|
return timer_pending(&neigh->t0timer);
|
}
|
}
|
|
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static void rose_ftimer_expiry(unsigned long param)
|
static void rose_ftimer_expiry(unsigned long param)
|
{
|
{
|
}
|
}
|
|
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static void rose_t0timer_expiry(unsigned long param)
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static void rose_t0timer_expiry(unsigned long param)
|
{
|
{
|
struct rose_neigh *neigh = (struct rose_neigh *)param;
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struct rose_neigh *neigh = (struct rose_neigh *)param;
|
|
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rose_transmit_restart_request(neigh);
|
rose_transmit_restart_request(neigh);
|
|
|
neigh->dce_mode = 0;
|
neigh->dce_mode = 0;
|
|
|
rose_start_t0timer(neigh);
|
rose_start_t0timer(neigh);
|
}
|
}
|
|
|
/*
|
/*
|
* Interface to ax25_send_frame. Changes my level 2 callsign depending
|
* Interface to ax25_send_frame. Changes my level 2 callsign depending
|
* on whether we have a global ROSE callsign or use the default port
|
* on whether we have a global ROSE callsign or use the default port
|
* callsign.
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* callsign.
|
*/
|
*/
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static int rose_send_frame(struct sk_buff *skb, struct rose_neigh *neigh)
|
static int rose_send_frame(struct sk_buff *skb, struct rose_neigh *neigh)
|
{
|
{
|
ax25_address *rose_call;
|
ax25_address *rose_call;
|
|
|
if (ax25cmp(&rose_callsign, &null_ax25_address) == 0)
|
if (ax25cmp(&rose_callsign, &null_ax25_address) == 0)
|
rose_call = (ax25_address *)neigh->dev->dev_addr;
|
rose_call = (ax25_address *)neigh->dev->dev_addr;
|
else
|
else
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rose_call = &rose_callsign;
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rose_call = &rose_callsign;
|
|
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neigh->ax25 = ax25_send_frame(skb, 260, rose_call, &neigh->callsign, neigh->digipeat, neigh->dev);
|
neigh->ax25 = ax25_send_frame(skb, 260, rose_call, &neigh->callsign, neigh->digipeat, neigh->dev);
|
|
|
return (neigh->ax25 != NULL);
|
return (neigh->ax25 != NULL);
|
}
|
}
|
|
|
/*
|
/*
|
* Interface to ax25_link_up. Changes my level 2 callsign depending
|
* Interface to ax25_link_up. Changes my level 2 callsign depending
|
* on whether we have a global ROSE callsign or use the default port
|
* on whether we have a global ROSE callsign or use the default port
|
* callsign.
|
* callsign.
|
*/
|
*/
|
static int rose_link_up(struct rose_neigh *neigh)
|
static int rose_link_up(struct rose_neigh *neigh)
|
{
|
{
|
ax25_address *rose_call;
|
ax25_address *rose_call;
|
|
|
if (ax25cmp(&rose_callsign, &null_ax25_address) == 0)
|
if (ax25cmp(&rose_callsign, &null_ax25_address) == 0)
|
rose_call = (ax25_address *)neigh->dev->dev_addr;
|
rose_call = (ax25_address *)neigh->dev->dev_addr;
|
else
|
else
|
rose_call = &rose_callsign;
|
rose_call = &rose_callsign;
|
|
|
neigh->ax25 = ax25_find_cb(rose_call, &neigh->callsign, neigh->digipeat, neigh->dev);
|
neigh->ax25 = ax25_find_cb(rose_call, &neigh->callsign, neigh->digipeat, neigh->dev);
|
|
|
return (neigh->ax25 != NULL);
|
return (neigh->ax25 != NULL);
|
}
|
}
|
|
|
/*
|
/*
|
* This handles all restart and diagnostic frames.
|
* This handles all restart and diagnostic frames.
|
*/
|
*/
|
void rose_link_rx_restart(struct sk_buff *skb, struct rose_neigh *neigh, unsigned short frametype)
|
void rose_link_rx_restart(struct sk_buff *skb, struct rose_neigh *neigh, unsigned short frametype)
|
{
|
{
|
struct sk_buff *skbn;
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struct sk_buff *skbn;
|
|
|
switch (frametype) {
|
switch (frametype) {
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case ROSE_RESTART_REQUEST:
|
case ROSE_RESTART_REQUEST:
|
rose_stop_t0timer(neigh);
|
rose_stop_t0timer(neigh);
|
neigh->restarted = 1;
|
neigh->restarted = 1;
|
neigh->dce_mode = (skb->data[3] == ROSE_DTE_ORIGINATED);
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neigh->dce_mode = (skb->data[3] == ROSE_DTE_ORIGINATED);
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rose_transmit_restart_confirmation(neigh);
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rose_transmit_restart_confirmation(neigh);
|
break;
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break;
|
|
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case ROSE_RESTART_CONFIRMATION:
|
case ROSE_RESTART_CONFIRMATION:
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rose_stop_t0timer(neigh);
|
rose_stop_t0timer(neigh);
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neigh->restarted = 1;
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neigh->restarted = 1;
|
break;
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break;
|
|
|
case ROSE_DIAGNOSTIC:
|
case ROSE_DIAGNOSTIC:
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printk(KERN_WARNING "ROSE: received diagnostic #%d - %02X %02X %02X\n", skb->data[3], skb->data[4], skb->data[5], skb->data[6]);
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printk(KERN_WARNING "ROSE: received diagnostic #%d - %02X %02X %02X\n", skb->data[3], skb->data[4], skb->data[5], skb->data[6]);
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break;
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break;
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|
|
default:
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default:
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printk(KERN_WARNING "ROSE: received unknown %02X with LCI 000\n", frametype);
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printk(KERN_WARNING "ROSE: received unknown %02X with LCI 000\n", frametype);
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break;
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break;
|
}
|
}
|
|
|
if (neigh->restarted) {
|
if (neigh->restarted) {
|
while ((skbn = skb_dequeue(&neigh->queue)) != NULL)
|
while ((skbn = skb_dequeue(&neigh->queue)) != NULL)
|
if (!rose_send_frame(skbn, neigh))
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if (!rose_send_frame(skbn, neigh))
|
kfree_skb(skbn);
|
kfree_skb(skbn);
|
}
|
}
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}
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}
|
|
|
/*
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/*
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* This routine is called when a Restart Request is needed
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* This routine is called when a Restart Request is needed
|
*/
|
*/
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void rose_transmit_restart_request(struct rose_neigh *neigh)
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void rose_transmit_restart_request(struct rose_neigh *neigh)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
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unsigned char *dptr;
|
unsigned char *dptr;
|
int len;
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int len;
|
|
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len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 3;
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len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 3;
|
|
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if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
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if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
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return;
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return;
|
|
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
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skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
|
|
dptr = skb_put(skb, ROSE_MIN_LEN + 3);
|
dptr = skb_put(skb, ROSE_MIN_LEN + 3);
|
|
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = 0x00;
|
*dptr++ = 0x00;
|
*dptr++ = ROSE_RESTART_REQUEST;
|
*dptr++ = ROSE_RESTART_REQUEST;
|
*dptr++ = ROSE_DTE_ORIGINATED;
|
*dptr++ = ROSE_DTE_ORIGINATED;
|
*dptr++ = 0;
|
*dptr++ = 0;
|
|
|
if (!rose_send_frame(skb, neigh))
|
if (!rose_send_frame(skb, neigh))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called when a Restart Confirmation is needed
|
* This routine is called when a Restart Confirmation is needed
|
*/
|
*/
|
void rose_transmit_restart_confirmation(struct rose_neigh *neigh)
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void rose_transmit_restart_confirmation(struct rose_neigh *neigh)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned char *dptr;
|
unsigned char *dptr;
|
int len;
|
int len;
|
|
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 1;
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 1;
|
|
|
if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
|
if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
|
return;
|
return;
|
|
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
|
|
dptr = skb_put(skb, ROSE_MIN_LEN + 1);
|
dptr = skb_put(skb, ROSE_MIN_LEN + 1);
|
|
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = 0x00;
|
*dptr++ = 0x00;
|
*dptr++ = ROSE_RESTART_CONFIRMATION;
|
*dptr++ = ROSE_RESTART_CONFIRMATION;
|
|
|
if (!rose_send_frame(skb, neigh))
|
if (!rose_send_frame(skb, neigh))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called when a Diagnostic is required.
|
* This routine is called when a Diagnostic is required.
|
*/
|
*/
|
void rose_transmit_diagnostic(struct rose_neigh *neigh, unsigned char diag)
|
void rose_transmit_diagnostic(struct rose_neigh *neigh, unsigned char diag)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned char *dptr;
|
unsigned char *dptr;
|
int len;
|
int len;
|
|
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 2;
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 2;
|
|
|
if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
|
if ((skb = alloc_skb(len, GFP_ATOMIC)) == NULL)
|
return;
|
return;
|
|
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
|
|
dptr = skb_put(skb, ROSE_MIN_LEN + 2);
|
dptr = skb_put(skb, ROSE_MIN_LEN + 2);
|
|
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = ROSE_GFI;
|
*dptr++ = 0x00;
|
*dptr++ = 0x00;
|
*dptr++ = ROSE_DIAGNOSTIC;
|
*dptr++ = ROSE_DIAGNOSTIC;
|
*dptr++ = diag;
|
*dptr++ = diag;
|
|
|
if (!rose_send_frame(skb, neigh))
|
if (!rose_send_frame(skb, neigh))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called when a Clear Request is needed outside of the context
|
* This routine is called when a Clear Request is needed outside of the context
|
* of a connected socket.
|
* of a connected socket.
|
*/
|
*/
|
void rose_transmit_clear_request(struct rose_neigh *neigh, unsigned int lci, unsigned char cause, unsigned char diagnostic)
|
void rose_transmit_clear_request(struct rose_neigh *neigh, unsigned int lci, unsigned char cause, unsigned char diagnostic)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
unsigned char *dptr;
|
unsigned char *dptr;
|
int len;
|
int len;
|
struct net_device *first;
|
struct net_device *first;
|
int faclen = 0;
|
int faclen = 0;
|
|
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 3;
|
len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 3;
|
|
|
first = rose_dev_first();
|
first = rose_dev_first();
|
if (first)
|
if (first)
|
faclen = 6 + AX25_ADDR_LEN + 3 + ROSE_ADDR_LEN;
|
faclen = 6 + AX25_ADDR_LEN + 3 + ROSE_ADDR_LEN;
|
|
|
if ((skb = alloc_skb(len + faclen, GFP_ATOMIC)) == NULL)
|
if ((skb = alloc_skb(len + faclen, GFP_ATOMIC)) == NULL)
|
return;
|
return;
|
|
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
skb_reserve(skb, AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN);
|
|
|
dptr = skb_put(skb, ROSE_MIN_LEN + 3 + faclen);
|
dptr = skb_put(skb, ROSE_MIN_LEN + 3 + faclen);
|
|
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = ((lci >> 8) & 0x0F) | ROSE_GFI;
|
*dptr++ = ((lci >> 8) & 0x0F) | ROSE_GFI;
|
*dptr++ = ((lci >> 0) & 0xFF);
|
*dptr++ = ((lci >> 0) & 0xFF);
|
*dptr++ = ROSE_CLEAR_REQUEST;
|
*dptr++ = ROSE_CLEAR_REQUEST;
|
*dptr++ = cause;
|
*dptr++ = cause;
|
*dptr++ = diagnostic;
|
*dptr++ = diagnostic;
|
|
|
if (first) {
|
if (first) {
|
*dptr++ = 0x00; /* Address length */
|
*dptr++ = 0x00; /* Address length */
|
*dptr++ = 4 + AX25_ADDR_LEN + 3 + ROSE_ADDR_LEN; /* Facilities length */
|
*dptr++ = 4 + AX25_ADDR_LEN + 3 + ROSE_ADDR_LEN; /* Facilities length */
|
*dptr++ = 0;
|
*dptr++ = 0;
|
*dptr++ = FAC_NATIONAL;
|
*dptr++ = FAC_NATIONAL;
|
*dptr++ = FAC_NATIONAL_FAIL_CALL;
|
*dptr++ = FAC_NATIONAL_FAIL_CALL;
|
*dptr++ = AX25_ADDR_LEN;
|
*dptr++ = AX25_ADDR_LEN;
|
memcpy(dptr, &rose_callsign, AX25_ADDR_LEN);
|
memcpy(dptr, &rose_callsign, AX25_ADDR_LEN);
|
dptr += AX25_ADDR_LEN;
|
dptr += AX25_ADDR_LEN;
|
*dptr++ = FAC_NATIONAL_FAIL_ADD;
|
*dptr++ = FAC_NATIONAL_FAIL_ADD;
|
*dptr++ = ROSE_ADDR_LEN + 1;
|
*dptr++ = ROSE_ADDR_LEN + 1;
|
*dptr++ = ROSE_ADDR_LEN * 2;
|
*dptr++ = ROSE_ADDR_LEN * 2;
|
memcpy(dptr, first->dev_addr, ROSE_ADDR_LEN);
|
memcpy(dptr, first->dev_addr, ROSE_ADDR_LEN);
|
}
|
}
|
|
|
if (!rose_send_frame(skb, neigh))
|
if (!rose_send_frame(skb, neigh))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
void rose_transmit_link(struct sk_buff *skb, struct rose_neigh *neigh)
|
void rose_transmit_link(struct sk_buff *skb, struct rose_neigh *neigh)
|
{
|
{
|
unsigned char *dptr;
|
unsigned char *dptr;
|
|
|
#if 0
|
#if 0
|
if (call_fw_firewall(PF_ROSE, skb->dev, skb->data, NULL, &skb) != FW_ACCEPT) {
|
if (call_fw_firewall(PF_ROSE, skb->dev, skb->data, NULL, &skb) != FW_ACCEPT) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
|
|
if (neigh->loopback) {
|
if (neigh->loopback) {
|
rose_loopback_queue(skb, neigh);
|
rose_loopback_queue(skb, neigh);
|
return;
|
return;
|
}
|
}
|
|
|
if (!rose_link_up(neigh))
|
if (!rose_link_up(neigh))
|
neigh->restarted = 0;
|
neigh->restarted = 0;
|
|
|
dptr = skb_push(skb, 1);
|
dptr = skb_push(skb, 1);
|
*dptr++ = AX25_P_ROSE;
|
*dptr++ = AX25_P_ROSE;
|
|
|
if (neigh->restarted) {
|
if (neigh->restarted) {
|
if (!rose_send_frame(skb, neigh))
|
if (!rose_send_frame(skb, neigh))
|
kfree_skb(skb);
|
kfree_skb(skb);
|
} else {
|
} else {
|
skb_queue_tail(&neigh->queue, skb);
|
skb_queue_tail(&neigh->queue, skb);
|
|
|
if (!rose_t0timer_running(neigh)) {
|
if (!rose_t0timer_running(neigh)) {
|
rose_transmit_restart_request(neigh);
|
rose_transmit_restart_request(neigh);
|
neigh->dce_mode = 0;
|
neigh->dce_mode = 0;
|
rose_start_t0timer(neigh);
|
rose_start_t0timer(neigh);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
