*
* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
*/
-#include <linux/config.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
-static struct protocol_struct {
- struct protocol_struct *next;
- unsigned int pid;
- int (*func)(struct sk_buff *, ax25_cb *);
-} *protocol_list = NULL;
+static struct ax25_protocol *protocol_list;
static DEFINE_RWLOCK(protocol_list_lock);
static struct linkfail_struct {
} *listen_list = NULL;
static DEFINE_SPINLOCK(listen_lock);
-int ax25_protocol_register(unsigned int pid,
- int (*func)(struct sk_buff *, ax25_cb *))
+/*
+ * Do not register the internal protocols AX25_P_TEXT, AX25_P_SEGMENT,
+ * AX25_P_IP or AX25_P_ARP ...
+ */
+void ax25_register_pid(struct ax25_protocol *ap)
{
- struct protocol_struct *protocol;
-
- if (pid == AX25_P_TEXT || pid == AX25_P_SEGMENT)
- return 0;
-#ifdef CONFIG_INET
- if (pid == AX25_P_IP || pid == AX25_P_ARP)
- return 0;
-#endif
- if ((protocol = kmalloc(sizeof(*protocol), GFP_ATOMIC)) == NULL)
- return 0;
-
- protocol->pid = pid;
- protocol->func = func;
-
- write_lock(&protocol_list_lock);
- protocol->next = protocol_list;
- protocol_list = protocol;
- write_unlock(&protocol_list_lock);
-
- return 1;
+ write_lock_bh(&protocol_list_lock);
+ ap->next = protocol_list;
+ protocol_list = ap;
+ write_unlock_bh(&protocol_list_lock);
}
+EXPORT_SYMBOL_GPL(ax25_register_pid);
+
void ax25_protocol_release(unsigned int pid)
{
- struct protocol_struct *s, *protocol;
+ struct ax25_protocol *s, *protocol;
- write_lock(&protocol_list_lock);
+ write_lock_bh(&protocol_list_lock);
protocol = protocol_list;
if (protocol == NULL) {
- write_unlock(&protocol_list_lock);
+ write_unlock_bh(&protocol_list_lock);
return;
}
if (protocol->pid == pid) {
protocol_list = protocol->next;
- write_unlock(&protocol_list_lock);
+ write_unlock_bh(&protocol_list_lock);
kfree(protocol);
return;
}
if (protocol->next->pid == pid) {
s = protocol->next;
protocol->next = protocol->next->next;
- write_unlock(&protocol_list_lock);
+ write_unlock_bh(&protocol_list_lock);
kfree(s);
return;
}
protocol = protocol->next;
}
- write_unlock(&protocol_list_lock);
+ write_unlock_bh(&protocol_list_lock);
}
+EXPORT_SYMBOL(ax25_protocol_release);
+
int ax25_linkfail_register(void (*func)(ax25_cb *, int))
{
struct linkfail_struct *linkfail;
return 1;
}
+EXPORT_SYMBOL(ax25_linkfail_register);
+
void ax25_linkfail_release(void (*func)(ax25_cb *, int))
{
struct linkfail_struct *s, *linkfail;
spin_unlock_bh(&linkfail_lock);
}
+EXPORT_SYMBOL(ax25_linkfail_release);
+
int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
{
struct listen_struct *listen;
return 1;
}
+EXPORT_SYMBOL(ax25_listen_register);
+
void ax25_listen_release(ax25_address *callsign, struct net_device *dev)
{
struct listen_struct *s, *listen;
spin_unlock_bh(&listen_lock);
}
+EXPORT_SYMBOL(ax25_listen_release);
+
int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *)
{
int (*res)(struct sk_buff *, ax25_cb *) = NULL;
- struct protocol_struct *protocol;
+ struct ax25_protocol *protocol;
read_lock(&protocol_list_lock);
for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
int ax25_protocol_is_registered(unsigned int pid)
{
- struct protocol_struct *protocol;
+ struct ax25_protocol *protocol;
int res = 0;
- read_lock(&protocol_list_lock);
+ read_lock_bh(&protocol_list_lock);
for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
if (protocol->pid == pid) {
res = 1;
break;
}
- read_unlock(&protocol_list_lock);
+ read_unlock_bh(&protocol_list_lock);
return res;
}