patch-2.1.9 linux/net/ax25/ax25_timer.c
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- Lines: 320
- Date:
Sun Nov 10 19:12:58 1996
- Orig file:
v2.1.8/linux/net/ax25/ax25_timer.c
- Orig date:
Tue Oct 29 19:58:49 1996
diff -u --recursive --new-file v2.1.8/linux/net/ax25/ax25_timer.c linux/net/ax25/ax25_timer.c
@@ -1,5 +1,5 @@
/*
- * AX.25 release 032
+ * AX.25 release 033
*
* This is ALPHA test software. This code may break your machine, randomly fail to work with new
* releases, misbehave and/or generally screw up. It might even work.
@@ -19,10 +19,11 @@
* AX.25 029 Alan(GW4PTS) Switched to KA9Q constant names.
* AX.25 031 Joerg(DL1BKE) Added DAMA support
* AX.25 032 Joerg(DL1BKE) Fixed DAMA timeout bug
+ * AX.25 033 Jonathan(G4KLX) Modularisation functions.
*/
#include <linux/config.h>
-#ifdef CONFIG_AX25
+#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
@@ -43,9 +44,6 @@
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
-#ifdef CONFIG_NETROM
-#include <net/netrom.h>
-#endif
static void ax25_timer(unsigned long);
@@ -144,16 +142,14 @@
/* dl1bke 960114: T3 expires and we are in DAMA mode: */
/* send a DISC and abort the connection */
if (ax25->dama_slave) {
-#ifdef CONFIG_NETROM
- nr_link_failed(&ax25->dest_addr, ax25->device);
-#endif
+ ax25_link_failed(&ax25->dest_addr, ax25->device);
ax25_clear_queues(ax25);
ax25_send_control(ax25, DISC, POLLON, C_COMMAND);
ax25->state = AX25_STATE_0;
if (ax25->sk != NULL) {
if (ax25->sk->debug)
- printk("T3 Timeout\n");
+ printk(KERN_DEBUG "AX.25 T3 Timeout\n");
ax25->sk->state = TCP_CLOSE;
ax25->sk->err = ETIMEDOUT;
if (!ax25->sk->dead)
@@ -237,9 +233,7 @@
case AX25_STATE_1:
if (ax25->n2count == ax25->n2) {
if (ax25->modulus == MODULUS) {
-#ifdef CONFIG_NETROM
- nr_link_failed(&ax25->dest_addr, ax25->device);
-#endif
+ ax25_link_failed(&ax25->dest_addr, ax25->device);
ax25_clear_queues(ax25);
ax25->state = AX25_STATE_0;
if (ax25->sk != NULL) {
@@ -267,9 +261,7 @@
case AX25_STATE_2:
if (ax25->n2count == ax25->n2) {
-#ifdef CONFIG_NETROM
- nr_link_failed(&ax25->dest_addr, ax25->device);
-#endif
+ ax25_link_failed(&ax25->dest_addr, ax25->device);
ax25_clear_queues(ax25);
ax25->state = AX25_STATE_0;
ax25_send_control(ax25, DISC, POLLON, C_COMMAND);
@@ -297,15 +289,13 @@
case AX25_STATE_4:
if (ax25->n2count == ax25->n2) {
-#ifdef CONFIG_NETROM
- nr_link_failed(&ax25->dest_addr, ax25->device);
-#endif
+ ax25_link_failed(&ax25->dest_addr, ax25->device);
ax25_clear_queues(ax25);
ax25_send_control(ax25, DM, POLLON, C_RESPONSE);
ax25->state = AX25_STATE_0;
if (ax25->sk != NULL) {
if (ax25->sk->debug)
- printk("Link Failure\n");
+ printk(KERN_DEBUG "AX.25 link Failure\n");
ax25->sk->state = TCP_CLOSE;
ax25->sk->err = ETIMEDOUT;
if (!ax25->sk->dead)
@@ -323,6 +313,230 @@
ax25->t1timer = ax25->t1 = ax25_calculate_t1(ax25);
ax25_set_timer(ax25);
+}
+
+/************************************************************************/
+/* Module support functions follow. */
+/************************************************************************/
+
+static struct protocol_struct {
+ struct protocol_struct *next;
+ unsigned int pid;
+ int (*func)(struct sk_buff *, ax25_cb *);
+} *protocol_list = NULL;
+
+static struct linkfail_struct {
+ struct linkfail_struct *next;
+ void (*func)(ax25_address *, struct device *);
+} *linkfail_list = NULL;
+
+static struct listen_struct {
+ struct listen_struct *next;
+ ax25_address callsign;
+ struct device *dev;
+} *listen_list = NULL;
+
+int ax25_protocol_register(unsigned int pid, int (*func)(struct sk_buff *, ax25_cb *))
+{
+ struct protocol_struct *protocol;
+ unsigned long flags;
+
+ 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 = (struct protocol_struct *)kmalloc(sizeof(*protocol), GFP_ATOMIC)) == NULL)
+ return 0;
+
+ protocol->pid = pid;
+ protocol->func = func;
+
+ save_flags(flags);
+ cli();
+
+ protocol->next = protocol_list;
+ protocol_list = protocol;
+
+ restore_flags(flags);
+
+ return 1;
+}
+
+void ax25_protocol_release(unsigned int pid)
+{
+ struct protocol_struct *s, *protocol = protocol_list;
+ unsigned long flags;
+
+ if (protocol == NULL)
+ return;
+
+ save_flags(flags);
+ cli();
+
+ if (protocol->pid == pid) {
+ protocol_list = protocol->next;
+ restore_flags(flags);
+ kfree_s(protocol, sizeof(struct protocol_struct));
+ return;
+ }
+
+ while (protocol != NULL && protocol->next != NULL) {
+ if (protocol->next->pid == pid) {
+ s = protocol->next;
+ protocol->next = protocol->next->next;
+ restore_flags(flags);
+ kfree_s(s, sizeof(struct protocol_struct));
+ return;
+ }
+
+ protocol = protocol->next;
+ }
+
+ restore_flags(flags);
+}
+
+int ax25_linkfail_register(void (*func)(ax25_address *, struct device *))
+{
+ struct linkfail_struct *linkfail;
+ unsigned long flags;
+
+ if ((linkfail = (struct linkfail_struct *)kmalloc(sizeof(*linkfail), GFP_ATOMIC)) == NULL)
+ return 0;
+
+ linkfail->func = func;
+
+ save_flags(flags);
+ cli();
+
+ linkfail->next = linkfail_list;
+ linkfail_list = linkfail;
+
+ restore_flags(flags);
+
+ return 1;
+}
+
+void ax25_linkfail_release(void (*func)(ax25_address *, struct device *))
+{
+ struct linkfail_struct *s, *linkfail = linkfail_list;
+ unsigned long flags;
+
+ if (linkfail == NULL)
+ return;
+
+ save_flags(flags);
+ cli();
+
+ if (linkfail->func == func) {
+ linkfail_list = linkfail->next;
+ restore_flags(flags);
+ kfree_s(linkfail, sizeof(struct linkfail_struct));
+ return;
+ }
+
+ while (linkfail != NULL && linkfail->next != NULL) {
+ if (linkfail->next->func == func) {
+ s = linkfail->next;
+ linkfail->next = linkfail->next->next;
+ restore_flags(flags);
+ kfree_s(s, sizeof(struct linkfail_struct));
+ return;
+ }
+
+ linkfail = linkfail->next;
+ }
+
+ restore_flags(flags);
+}
+
+int ax25_listen_register(ax25_address *callsign, struct device *dev)
+{
+ struct listen_struct *listen;
+ unsigned long flags;
+
+ if (ax25_listen_mine(callsign, dev))
+ return 0;
+
+ if ((listen = (struct listen_struct *)kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
+ return 0;
+
+ listen->callsign = *callsign;
+ listen->dev = dev;
+
+ save_flags(flags);
+ cli();
+
+ listen->next = listen_list;
+ listen_list = listen;
+
+ restore_flags(flags);
+
+ return 1;
+}
+
+void ax25_listen_release(ax25_address *callsign, struct device *dev)
+{
+ struct listen_struct *s, *listen = listen_list;
+ unsigned long flags;
+
+ if (listen == NULL)
+ return;
+
+ save_flags(flags);
+ cli();
+
+ if (ax25cmp(&listen->callsign, callsign) == 0 && listen->dev == dev) {
+ listen_list = listen->next;
+ restore_flags(flags);
+ kfree_s(listen, sizeof(struct listen_struct));
+ return;
+ }
+
+ while (listen != NULL && listen->next != NULL) {
+ if (ax25cmp(&listen->next->callsign, callsign) == 0 && listen->next->dev == dev) {
+ s = listen->next;
+ listen->next = listen->next->next;
+ restore_flags(flags);
+ kfree_s(s, sizeof(struct listen_struct));
+ return;
+ }
+
+ listen = listen->next;
+ }
+
+ restore_flags(flags);
+}
+
+int (*ax25_protocol_function(unsigned int pid))(struct sk_buff *, ax25_cb *)
+{
+ struct protocol_struct *protocol;
+
+ for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
+ if (protocol->pid == pid)
+ return protocol->func;
+
+ return NULL;
+}
+
+int ax25_listen_mine(ax25_address *callsign, struct device *dev)
+{
+ struct listen_struct *listen;
+
+ for (listen = listen_list; listen != NULL; listen = listen->next)
+ if (ax25cmp(&listen->callsign, callsign) == 0 && (listen->dev == dev || listen->dev == NULL))
+ return 1;
+
+ return 0;
+}
+
+void ax25_link_failed(ax25_address *callsign, struct device *dev)
+{
+ struct linkfail_struct *linkfail;
+
+ for (linkfail = linkfail_list; linkfail != NULL; linkfail = linkfail->next)
+ (linkfail->func)(callsign, dev);
}
#endif
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