/*
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/*
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* AX.25 release 037
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* AX.25 release 037
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*
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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
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* History
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* AX.25 036 Jonathan(G4KLX) Split from ax25_timer.c.
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* AX.25 036 Jonathan(G4KLX) Split from ax25_timer.c.
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*/
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*/
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#include <linux/config.h>
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#include <linux/config.h>
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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/uaccess.h>
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#include <asm/uaccess.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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static struct protocol_struct {
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static struct protocol_struct {
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struct protocol_struct *next;
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struct protocol_struct *next;
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unsigned int pid;
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unsigned int pid;
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int (*func)(struct sk_buff *, ax25_cb *);
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int (*func)(struct sk_buff *, ax25_cb *);
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} *protocol_list;
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} *protocol_list;
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static struct linkfail_struct {
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static struct linkfail_struct {
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struct linkfail_struct *next;
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struct linkfail_struct *next;
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void (*func)(ax25_cb *, int);
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void (*func)(ax25_cb *, int);
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} *linkfail_list;
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} *linkfail_list;
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static struct listen_struct {
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static struct listen_struct {
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struct listen_struct *next;
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struct listen_struct *next;
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ax25_address callsign;
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ax25_address callsign;
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struct net_device *dev;
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struct net_device *dev;
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} *listen_list;
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} *listen_list;
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int ax25_protocol_register(unsigned int pid, int (*func)(struct sk_buff *, ax25_cb *))
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int ax25_protocol_register(unsigned int pid, int (*func)(struct sk_buff *, ax25_cb *))
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{
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{
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struct protocol_struct *protocol;
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struct protocol_struct *protocol;
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unsigned long flags;
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unsigned long flags;
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if (pid == AX25_P_TEXT || pid == AX25_P_SEGMENT)
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if (pid == AX25_P_TEXT || pid == AX25_P_SEGMENT)
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return 0;
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return 0;
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#ifdef CONFIG_INET
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#ifdef CONFIG_INET
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if (pid == AX25_P_IP || pid == AX25_P_ARP)
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if (pid == AX25_P_IP || pid == AX25_P_ARP)
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return 0;
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return 0;
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#endif
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#endif
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if ((protocol = kmalloc(sizeof(*protocol), GFP_ATOMIC)) == NULL)
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if ((protocol = kmalloc(sizeof(*protocol), GFP_ATOMIC)) == NULL)
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return 0;
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return 0;
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protocol->pid = pid;
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protocol->pid = pid;
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protocol->func = func;
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protocol->func = func;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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protocol->next = protocol_list;
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protocol->next = protocol_list;
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protocol_list = protocol;
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protocol_list = protocol;
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restore_flags(flags);
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restore_flags(flags);
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return 1;
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return 1;
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}
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}
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void ax25_protocol_release(unsigned int pid)
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void ax25_protocol_release(unsigned int pid)
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{
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{
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struct protocol_struct *s, *protocol = protocol_list;
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struct protocol_struct *s, *protocol = protocol_list;
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unsigned long flags;
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unsigned long flags;
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if (protocol == NULL)
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if (protocol == NULL)
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return;
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return;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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if (protocol->pid == pid) {
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if (protocol->pid == pid) {
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protocol_list = protocol->next;
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protocol_list = protocol->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(protocol);
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kfree(protocol);
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return;
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return;
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}
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}
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while (protocol != NULL && protocol->next != NULL) {
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while (protocol != NULL && protocol->next != NULL) {
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if (protocol->next->pid == pid) {
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if (protocol->next->pid == pid) {
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s = protocol->next;
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s = protocol->next;
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protocol->next = protocol->next->next;
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protocol->next = protocol->next->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(s);
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kfree(s);
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return;
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return;
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}
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}
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protocol = protocol->next;
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protocol = protocol->next;
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}
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}
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restore_flags(flags);
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restore_flags(flags);
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}
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}
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int ax25_linkfail_register(void (*func)(ax25_cb *, int))
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int ax25_linkfail_register(void (*func)(ax25_cb *, int))
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{
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{
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struct linkfail_struct *linkfail;
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struct linkfail_struct *linkfail;
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unsigned long flags;
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unsigned long flags;
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if ((linkfail = kmalloc(sizeof(*linkfail), GFP_ATOMIC)) == NULL)
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if ((linkfail = kmalloc(sizeof(*linkfail), GFP_ATOMIC)) == NULL)
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return 0;
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return 0;
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linkfail->func = func;
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linkfail->func = func;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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linkfail->next = linkfail_list;
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linkfail->next = linkfail_list;
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linkfail_list = linkfail;
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linkfail_list = linkfail;
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restore_flags(flags);
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restore_flags(flags);
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return 1;
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return 1;
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}
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}
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void ax25_linkfail_release(void (*func)(ax25_cb *, int))
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void ax25_linkfail_release(void (*func)(ax25_cb *, int))
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{
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{
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struct linkfail_struct *s, *linkfail = linkfail_list;
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struct linkfail_struct *s, *linkfail = linkfail_list;
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unsigned long flags;
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unsigned long flags;
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if (linkfail == NULL)
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if (linkfail == NULL)
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return;
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return;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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if (linkfail->func == func) {
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if (linkfail->func == func) {
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linkfail_list = linkfail->next;
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linkfail_list = linkfail->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(linkfail);
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kfree(linkfail);
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return;
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return;
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}
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}
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while (linkfail != NULL && linkfail->next != NULL) {
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while (linkfail != NULL && linkfail->next != NULL) {
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if (linkfail->next->func == func) {
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if (linkfail->next->func == func) {
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s = linkfail->next;
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s = linkfail->next;
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linkfail->next = linkfail->next->next;
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linkfail->next = linkfail->next->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(s);
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kfree(s);
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return;
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return;
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}
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}
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linkfail = linkfail->next;
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linkfail = linkfail->next;
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}
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}
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restore_flags(flags);
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restore_flags(flags);
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}
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}
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int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
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int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
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{
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{
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struct listen_struct *listen;
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struct listen_struct *listen;
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unsigned long flags;
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unsigned long flags;
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if (ax25_listen_mine(callsign, dev))
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if (ax25_listen_mine(callsign, dev))
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return 0;
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return 0;
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if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
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if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
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return 0;
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return 0;
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listen->callsign = *callsign;
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listen->callsign = *callsign;
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listen->dev = dev;
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listen->dev = dev;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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listen->next = listen_list;
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listen->next = listen_list;
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listen_list = listen;
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listen_list = listen;
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restore_flags(flags);
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restore_flags(flags);
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return 1;
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return 1;
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}
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}
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void ax25_listen_release(ax25_address *callsign, struct net_device *dev)
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void ax25_listen_release(ax25_address *callsign, struct net_device *dev)
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{
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{
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struct listen_struct *s, *listen = listen_list;
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struct listen_struct *s, *listen = listen_list;
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unsigned long flags;
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unsigned long flags;
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if (listen == NULL)
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if (listen == NULL)
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return;
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return;
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save_flags(flags);
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save_flags(flags);
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cli();
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cli();
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if (ax25cmp(&listen->callsign, callsign) == 0 && listen->dev == dev) {
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if (ax25cmp(&listen->callsign, callsign) == 0 && listen->dev == dev) {
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listen_list = listen->next;
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listen_list = listen->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(listen);
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kfree(listen);
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return;
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return;
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}
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}
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while (listen != NULL && listen->next != NULL) {
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while (listen != NULL && listen->next != NULL) {
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if (ax25cmp(&listen->next->callsign, callsign) == 0 && listen->next->dev == dev) {
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if (ax25cmp(&listen->next->callsign, callsign) == 0 && listen->next->dev == dev) {
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s = listen->next;
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s = listen->next;
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listen->next = listen->next->next;
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listen->next = listen->next->next;
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restore_flags(flags);
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restore_flags(flags);
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kfree(s);
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kfree(s);
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return;
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return;
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}
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}
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listen = listen->next;
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listen = listen->next;
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}
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}
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restore_flags(flags);
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restore_flags(flags);
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}
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}
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int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *)
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int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *)
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{
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{
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struct protocol_struct *protocol;
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struct protocol_struct *protocol;
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for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
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for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
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if (protocol->pid == pid)
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if (protocol->pid == pid)
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return protocol->func;
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return protocol->func;
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return NULL;
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return NULL;
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}
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}
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int ax25_listen_mine(ax25_address *callsign, struct net_device *dev)
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int ax25_listen_mine(ax25_address *callsign, struct net_device *dev)
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{
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{
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struct listen_struct *listen;
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struct listen_struct *listen;
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for (listen = listen_list; listen != NULL; listen = listen->next)
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for (listen = listen_list; listen != NULL; listen = listen->next)
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if (ax25cmp(&listen->callsign, callsign) == 0 && (listen->dev == dev || listen->dev == NULL))
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if (ax25cmp(&listen->callsign, callsign) == 0 && (listen->dev == dev || listen->dev == NULL))
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return 1;
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return 1;
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return 0;
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return 0;
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}
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}
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void ax25_link_failed(ax25_cb *ax25, int reason)
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void ax25_link_failed(ax25_cb *ax25, int reason)
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{
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{
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struct linkfail_struct *linkfail;
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struct linkfail_struct *linkfail;
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for (linkfail = linkfail_list; linkfail != NULL; linkfail = linkfail->next)
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for (linkfail = linkfail_list; linkfail != NULL; linkfail = linkfail->next)
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(linkfail->func)(ax25, reason);
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(linkfail->func)(ax25, reason);
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}
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}
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int ax25_protocol_is_registered(unsigned int pid)
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int ax25_protocol_is_registered(unsigned int pid)
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{
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{
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struct protocol_struct *protocol;
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struct protocol_struct *protocol;
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for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
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for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
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if (protocol->pid == pid)
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if (protocol->pid == pid)
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return 1;
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return 1;
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return 0;
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return 0;
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}
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}
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