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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [net/] [rose/] [rose_timer.c] - Rev 1629
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/* * ROSE release 003 * * This code REQUIRES 2.1.0 or higher/ NET3.029 * * 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 * ROSE 001 Jonathan(G4KLX) Cloned from nr_timer.c */ #include <linux/config.h> #if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE) #include <linux/errno.h> #include <linux/types.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/sockios.h> #include <linux/net.h> #include <net/ax25.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <net/sock.h> #include <asm/segment.h> #include <asm/system.h> #include <linux/fcntl.h> #include <linux/mm.h> #include <linux/interrupt.h> #include <net/rose.h> static void rose_timer(unsigned long); /* * Linux set timer */ void rose_set_timer(struct sock *sk) { unsigned long flags; save_flags(flags); cli(); del_timer(&sk->timer); restore_flags(flags); sk->timer.data = (unsigned long)sk; sk->timer.function = &rose_timer; sk->timer.expires = jiffies + 10; add_timer(&sk->timer); } /* * ROSE Timer * * This routine is called every 100ms. Decrement timer by this * amount - if expired then process the event. */ static void rose_timer(unsigned long param) { struct sock *sk = (struct sock *)param; struct device *first; switch (sk->protinfo.rose->state) { case ROSE_STATE_0: /* Magic here: If we listen() and a new link dies before it is accepted() it isn't 'dead' so doesn't get removed. */ if (sk->destroy || (sk->state == TCP_LISTEN && sk->dead)) { del_timer(&sk->timer); rose_destroy_socket(sk); return; } break; case ROSE_STATE_3: /* * Check for the state of the receive buffer. */ if (sk->rmem_alloc < ((sk->rcvbuf - ROSE_MAX_WINDOW_LEN) / 2) && (sk->protinfo.rose->condition & ROSE_COND_OWN_RX_BUSY)) { sk->protinfo.rose->condition &= ~ROSE_COND_OWN_RX_BUSY; sk->protinfo.rose->condition &= ~ROSE_COND_ACK_PENDING; sk->protinfo.rose->vl = sk->protinfo.rose->vr; sk->protinfo.rose->timer = 0; rose_write_internal(sk, ROSE_RR); break; } /* * Check for frames to transmit. */ rose_kick(sk); break; default: break; } if (sk->protinfo.rose->timer == 0 || --sk->protinfo.rose->timer > 0) { rose_set_timer(sk); return; } /* * Timer has expired, it may have been T1, T2, T3 or HB. We can tell * by the socket state. */ switch (sk->protinfo.rose->state) { case ROSE_STATE_3: /* HB */ if (sk->protinfo.rose->condition & ROSE_COND_ACK_PENDING) { sk->protinfo.rose->condition &= ~ROSE_COND_ACK_PENDING; rose_enquiry_response(sk); } break; case ROSE_STATE_1: /* T1 */ case ROSE_STATE_4: /* T2 */ rose_write_internal(sk, ROSE_CLEAR_REQUEST); /* F6FBB - Disconnect the calling station sk->protinfo.rose->state = ROSE_STATE_2; sk->protinfo.rose->timer = sk->protinfo.rose->t3; break; */ /* Falls to next case */ case ROSE_STATE_2: /* T3 */ /* F6FBB - Added Cause and diagnostic */ sk->protinfo.rose->cause = ROSE_DTE_ORIGINATED; sk->protinfo.rose->diagnostic = 0x30; /* F6FBB - Added Facilities */ first = rose_dev_first(); if (first) { sk->protinfo.rose->facilities.fail_call = rose_callsign; memcpy(&sk->protinfo.rose->facilities.fail_addr, first->dev_addr, ROSE_ADDR_LEN); } rose_clear_queues(sk); sk->protinfo.rose->neighbour->use--; sk->protinfo.rose->state = ROSE_STATE_0; sk->state = TCP_CLOSE; sk->err = ETIMEDOUT; sk->shutdown |= SEND_SHUTDOWN; if (!sk->dead) sk->state_change(sk); sk->dead = 1; break; } rose_set_timer(sk); } #endif
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