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-rw-r--r--net/ax25/ax25_route.c282
1 files changed, 81 insertions, 201 deletions
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index b4606111e..04a7c8542 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -1,10 +1,10 @@
/*
- * AX.25 release 033
+ * AX.25 release 036
*
* 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.
*
- * This code REQUIRES 1.2.1 or higher/ NET3.029
+ * This code REQUIRES 2.1.15 or higher/ NET3.038
*
* This module:
* This module is free software; you can redistribute it and/or
@@ -39,8 +39,10 @@
* on routes.
* AX.25 033 Jonathan(G4KLX) Remove auto-router.
* Joerg(DL1BKE) Moved BPQ Ethernet driver to seperate device.
+ * AX.25 035 Frederic(F1OAT) Support for pseudo-digipeating.
+ * Jonathan(G4KLX) Support for packet forwarding.
*/
-
+
#include <linux/config.h>
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
#include <linux/errno.h>
@@ -65,22 +67,9 @@
#include <linux/mm.h>
#include <linux/interrupt.h>
-static struct ax25_route {
- struct ax25_route *next;
- ax25_address callsign;
- struct device *dev;
- ax25_digi *digipeat;
- char ip_mode;
-} *ax25_route = NULL;
-
-struct ax25_dev ax25_device[AX25_MAX_DEVICES] = {
- {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL},
- {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL},
- {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL},
- {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}
-};
+static ax25_route *ax25_route_list = NULL;
-static struct ax25_route *ax25_find_route(ax25_address *, struct device *);
+static ax25_route *ax25_find_route(ax25_address *, struct device *);
/*
* small macro to drop non-digipeated digipeaters and reverse path
@@ -100,28 +89,28 @@ static inline void ax25_route_invert(ax25_digi *in, ax25_digi *out)
void ax25_rt_device_down(struct device *dev)
{
- struct ax25_route *s, *t, *ax25_rt = ax25_route;
+ ax25_route *s, *t, *ax25_rt = ax25_route_list;
while (ax25_rt != NULL) {
s = ax25_rt;
ax25_rt = ax25_rt->next;
if (s->dev == dev) {
- if (ax25_route == s) {
- ax25_route = s->next;
+ if (ax25_route_list == s) {
+ ax25_route_list = s->next;
if (s->digipeat != NULL)
- kfree_s((void *)s->digipeat, sizeof(ax25_digi));
- kfree_s((void *)s, (sizeof *s));
+ kfree_s(s->digipeat, sizeof(ax25_digi));
+ kfree_s(s, sizeof(ax25_route));
} else {
- for (t = ax25_route; t != NULL; t = t->next) {
+ for (t = ax25_route_list; t != NULL; t = t->next) {
if (t->next == s) {
t->next = s->next;
if (s->digipeat != NULL)
- kfree_s((void *)s->digipeat, sizeof(ax25_digi));
- kfree_s((void *)s, sizeof(*s));
+ kfree_s(s->digipeat, sizeof(ax25_digi));
+ kfree_s(s, sizeof(ax25_route));
break;
}
- }
+ }
}
}
}
@@ -130,10 +119,10 @@ void ax25_rt_device_down(struct device *dev)
int ax25_rt_ioctl(unsigned int cmd, void *arg)
{
unsigned long flags;
- struct ax25_route *s, *t, *ax25_rt;
+ ax25_route *s, *t, *ax25_rt;
struct ax25_routes_struct route;
struct ax25_route_opt_struct rt_option;
- struct device *dev;
+ ax25_dev *ax25_dev;
int i, err;
switch (cmd) {
@@ -141,12 +130,12 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
if ((err = verify_area(VERIFY_READ, arg, sizeof(route))) != 0)
return err;
copy_from_user(&route, arg, sizeof(route));
- if ((dev = ax25rtr_get_dev(&route.port_addr)) == NULL)
+ if ((ax25_dev = ax25_addr_ax25dev(&route.port_addr)) == NULL)
return -EINVAL;
if (route.digi_count > AX25_MAX_DIGIS)
return -EINVAL;
- for (ax25_rt = ax25_route; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
- if (ax25cmp(&ax25_rt->callsign, &route.dest_addr) == 0 && ax25_rt->dev == dev) {
+ for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
+ if (ax25cmp(&ax25_rt->callsign, &route.dest_addr) == 0 && ax25_rt->dev == ax25_dev->dev) {
if (ax25_rt->digipeat != NULL) {
kfree_s(ax25_rt->digipeat, sizeof(ax25_digi));
ax25_rt->digipeat = NULL;
@@ -154,7 +143,7 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
if (route.digi_count != 0) {
if ((ax25_rt->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL)
return -ENOMEM;
- ax25_rt->digipeat->lastrepeat = 0;
+ ax25_rt->digipeat->lastrepeat = -1;
ax25_rt->digipeat->ndigi = route.digi_count;
for (i = 0; i < route.digi_count; i++) {
ax25_rt->digipeat->repeated[i] = 0;
@@ -164,28 +153,27 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
return 0;
}
}
- if ((ax25_rt = (struct ax25_route *)kmalloc(sizeof(struct ax25_route), GFP_ATOMIC)) == NULL)
+ if ((ax25_rt = kmalloc(sizeof(ax25_route), GFP_ATOMIC)) == NULL)
return -ENOMEM;
ax25_rt->callsign = route.dest_addr;
- ax25_rt->dev = dev;
+ ax25_rt->dev = ax25_dev->dev;
ax25_rt->digipeat = NULL;
ax25_rt->ip_mode = ' ';
if (route.digi_count != 0) {
if ((ax25_rt->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
- kfree_s(ax25_rt, sizeof(struct ax25_route));
+ kfree_s(ax25_rt, sizeof(ax25_route));
return -ENOMEM;
}
- ax25_rt->digipeat->lastrepeat = 0;
+ ax25_rt->digipeat->lastrepeat = -1;
ax25_rt->digipeat->ndigi = route.digi_count;
for (i = 0; i < route.digi_count; i++) {
ax25_rt->digipeat->repeated[i] = 0;
ax25_rt->digipeat->calls[i] = route.digi_addr[i];
}
}
- save_flags(flags);
- cli();
- ax25_rt->next = ax25_route;
- ax25_route = ax25_rt;
+ save_flags(flags); cli();
+ ax25_rt->next = ax25_route_list;
+ ax25_route_list = ax25_rt;
restore_flags(flags);
break;
@@ -193,25 +181,25 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
if ((err = verify_area(VERIFY_READ, arg, sizeof(route))) != 0)
return err;
copy_from_user(&route, arg, sizeof(route));
- if ((dev = ax25rtr_get_dev(&route.port_addr)) == NULL)
+ if ((ax25_dev = ax25_addr_ax25dev(&route.port_addr)) == NULL)
return -EINVAL;
- ax25_rt = ax25_route;
+ ax25_rt = ax25_route_list;
while (ax25_rt != NULL) {
s = ax25_rt;
ax25_rt = ax25_rt->next;
- if (s->dev == dev && ax25cmp(&route.dest_addr, &s->callsign) == 0) {
- if (ax25_route == s) {
- ax25_route = s->next;
+ if (s->dev == ax25_dev->dev && ax25cmp(&route.dest_addr, &s->callsign) == 0) {
+ if (ax25_route_list == s) {
+ ax25_route_list = s->next;
if (s->digipeat != NULL)
- kfree_s((void *)s->digipeat, sizeof(ax25_digi));
- kfree_s((void *)s, (sizeof *s));
+ kfree_s(s->digipeat, sizeof(ax25_digi));
+ kfree_s(s, sizeof(ax25_route));
} else {
- for (t = ax25_route; t != NULL; t = t->next) {
+ for (t = ax25_route_list; t != NULL; t = t->next) {
if (t->next == s) {
t->next = s->next;
if (s->digipeat != NULL)
- kfree_s((void *)s->digipeat, sizeof(ax25_digi));
- kfree_s((void *)s, sizeof(*s));
+ kfree_s(s->digipeat, sizeof(ax25_digi));
+ kfree_s(s, sizeof(ax25_route));
break;
}
}
@@ -224,10 +212,10 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
if ((err = verify_area(VERIFY_READ, arg, sizeof(rt_option))) != 0)
return err;
copy_from_user(&rt_option, arg, sizeof(rt_option));
- if ((dev = ax25rtr_get_dev(&rt_option.port_addr)) == NULL)
+ if ((ax25_dev = ax25_addr_ax25dev(&rt_option.port_addr)) == NULL)
return -EINVAL;
- for (ax25_rt = ax25_route; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
- if (ax25_rt->dev == dev && ax25cmp(&rt_option.dest_addr, &ax25_rt->callsign) == 0) {
+ for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
+ if (ax25_rt->dev == ax25_dev->dev && ax25cmp(&rt_option.dest_addr, &ax25_rt->callsign) == 0) {
switch (rt_option.cmd) {
case AX25_SET_RT_IPMODE:
switch (rt_option.arg) {
@@ -256,7 +244,7 @@ int ax25_rt_ioctl(unsigned int cmd, void *arg)
int ax25_rt_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
- struct ax25_route *ax25_rt;
+ ax25_route *ax25_rt;
int len = 0;
off_t pos = 0;
off_t begin = 0;
@@ -267,7 +255,7 @@ int ax25_rt_get_info(char *buffer, char **start, off_t offset, int length, int d
len += sprintf(buffer, "callsign dev mode digipeaters\n");
- for (ax25_rt = ax25_route; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
+ for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0)
callsign = "default";
else
@@ -287,20 +275,20 @@ int ax25_rt_get_info(char *buffer, char **start, off_t offset, int length, int d
len += sprintf(buffer + len, " *");
break;
}
-
+
if (ax25_rt->digipeat != NULL)
for (i = 0; i < ax25_rt->digipeat->ndigi; i++)
len += sprintf(buffer + len, " %s", ax2asc(&ax25_rt->digipeat->calls[i]));
-
+
len += sprintf(buffer + len, "\n");
-
+
pos = begin + len;
if (pos < offset) {
len = 0;
begin = pos;
}
-
+
if (pos > offset + length)
break;
}
@@ -315,55 +303,20 @@ int ax25_rt_get_info(char *buffer, char **start, off_t offset, int length, int d
return len;
}
-int ax25_cs_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
-{
- ax25_uid_assoc *pt;
- int len = 0;
- off_t pos = 0;
- off_t begin = 0;
-
- cli();
-
- len += sprintf(buffer, "Policy: %d\n", ax25_uid_policy);
-
- for (pt = ax25_uid_list; pt != NULL; pt = pt->next) {
- len += sprintf(buffer + len, "%6d %s\n", pt->uid, ax2asc(&pt->call));
-
- pos = begin + len;
-
- if (pos < offset) {
- len = 0;
- begin = pos;
- }
-
- if (pos > offset + length)
- break;
- }
-
- sti();
-
- *start = buffer + (offset - begin);
- len -= offset - begin;
-
- if (len > length) len = length;
-
- return len;
-}
-
/*
* Find AX.25 route
*/
-static struct ax25_route *ax25_find_route(ax25_address *addr, struct device *dev)
+static ax25_route *ax25_find_route(ax25_address *addr, struct device *dev)
{
- struct ax25_route *ax25_spe_rt = NULL;
- struct ax25_route *ax25_def_rt = NULL;
- struct ax25_route *ax25_rt;
-
+ ax25_route *ax25_spe_rt = NULL;
+ ax25_route *ax25_def_rt = NULL;
+ ax25_route *ax25_rt;
+
/*
* Bind to the physical interface we heard them on, or the default
* route if none is found;
*/
- for (ax25_rt = ax25_route; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
+ for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next) {
if (dev == NULL) {
if (ax25cmp(&ax25_rt->callsign, addr) == 0 && ax25_rt->dev != NULL)
ax25_spe_rt = ax25_rt;
@@ -379,7 +332,7 @@ static struct ax25_route *ax25_find_route(ax25_address *addr, struct device *dev
if (ax25_spe_rt != NULL)
return ax25_spe_rt;
-
+
return ax25_def_rt;
}
@@ -391,12 +344,12 @@ static struct ax25_route *ax25_find_route(ax25_address *addr, struct device *dev
static inline void ax25_adjust_path(ax25_address *addr, ax25_digi *digipeat)
{
int k;
-
+
for (k = 0; k < digipeat->ndigi; k++) {
if (ax25cmp(addr, &digipeat->calls[k]) == 0)
break;
}
-
+
digipeat->ndigi = k;
}
@@ -406,18 +359,19 @@ static inline void ax25_adjust_path(ax25_address *addr, ax25_digi *digipeat)
*/
int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
{
- struct ax25_route *ax25_rt;
+ ax25_route *ax25_rt;
ax25_address *call;
if ((ax25_rt = ax25_find_route(addr, NULL)) == NULL)
return -EHOSTUNREACH;
-
- ax25->device = ax25_rt->dev;
+
+ if ((ax25->ax25_dev = ax25_dev_ax25dev(ax25_rt->dev)) == NULL)
+ return -EHOSTUNREACH;
if ((call = ax25_findbyuid(current->euid)) == NULL) {
if (ax25_uid_policy && !suser())
return -EPERM;
- call = (ax25_address *)ax25->device->dev_addr;
+ call = (ax25_address *)ax25->ax25_dev->dev->dev_addr;
}
ax25->source_addr = *call;
@@ -441,25 +395,27 @@ int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
*/
void ax25_rt_build_path(ax25_cb *ax25, ax25_address *addr, struct device *dev)
{
- struct ax25_route *ax25_rt;
-
+ ax25_route *ax25_rt;
+
if ((ax25_rt = ax25_find_route(addr, dev)) == NULL)
return;
-
+
if (ax25_rt->digipeat == NULL)
return;
if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL)
return;
- ax25->device = ax25_rt->dev;
+ if ((ax25->ax25_dev = ax25_dev_ax25dev(ax25_rt->dev)) == NULL)
+ return;
+
*ax25->digipeat = *ax25_rt->digipeat;
ax25_adjust_path(addr, ax25->digipeat);
}
void ax25_dg_build_path(struct sk_buff *skb, ax25_address *addr, struct device *dev)
{
- struct ax25_route *ax25_rt;
+ ax25_route *ax25_rt;
ax25_digi digipeat;
ax25_address src, dest;
unsigned char *bp;
@@ -472,24 +428,24 @@ void ax25_dg_build_path(struct sk_buff *skb, ax25_address *addr, struct device *
if (ax25_rt->digipeat == NULL)
return;
-
+
digipeat = *ax25_rt->digipeat;
-
+
ax25_adjust_path(addr, &digipeat);
len = ax25_rt->digipeat->ndigi * AX25_ADDR_LEN;
-
+
if (skb_headroom(skb) < len) {
printk(KERN_CRIT "ax25_dg_build_path: not enough headroom for digis in skb\n");
return;
}
-
- memcpy(&dest, skb->data , AX25_ADDR_LEN);
+
+ memcpy(&dest, skb->data + 0, AX25_ADDR_LEN);
memcpy(&src, skb->data + 7, AX25_ADDR_LEN);
bp = skb_push(skb, len);
- build_ax25_addr(bp, &src, &dest, ax25_rt->digipeat, C_COMMAND, MODULUS);
+ ax25_addr_build(bp, &src, &dest, ax25_rt->digipeat, AX25_COMMAND, AX25_MODULUS);
}
/*
@@ -497,99 +453,24 @@ void ax25_dg_build_path(struct sk_buff *skb, ax25_address *addr, struct device *
*/
char ax25_ip_mode_get(ax25_address *callsign, struct device *dev)
{
- struct ax25_route *ax25_rt;
+ ax25_route *ax25_rt;
- for (ax25_rt = ax25_route; ax25_rt != NULL; ax25_rt = ax25_rt->next)
+ for (ax25_rt = ax25_route_list; ax25_rt != NULL; ax25_rt = ax25_rt->next)
if (ax25cmp(&ax25_rt->callsign, callsign) == 0 && ax25_rt->dev == dev)
return ax25_rt->ip_mode;
return ' ';
}
-/*
- * Wow, a bit of data hiding. Is this C++ or what ?
- */
-int ax25_dev_get_value(struct device *dev, int valueno)
-{
- int i;
-
- for (i = 0; i < AX25_MAX_DEVICES; i++)
- if (ax25_device[i].dev != NULL && ax25_device[i].dev == dev)
- return ax25_device[i].values[valueno];
-
- printk(KERN_WARNING "ax25_dev_get_value called with invalid device\n");
-
- return 0;
-}
-
-/*
- * This is called when an interface is brought up. These are
- * reasonable defaults.
- */
-void ax25_dev_device_up(struct device *dev)
-{
- struct ax25_dev *ax25_dev = NULL;
- int i;
-
- for (i = 0; i < AX25_MAX_DEVICES; i++) {
- if (ax25_device[i].dev == NULL) {
- ax25_dev = ax25_device + i;
- break;
- }
- }
-
- if (ax25_dev == NULL) {
- printk(KERN_ERR "ax25_dev_device_up cannot find free AX.25 device\n");
- return;
- }
-
- ax25_unregister_sysctl();
-
- sprintf(ax25_dev->name, "%s.parms", dev->name);
-
- ax25_dev->dev = dev;
-
- ax25_dev->values[AX25_VALUES_IPDEFMODE] = AX25_DEF_IPDEFMODE;
- ax25_dev->values[AX25_VALUES_AXDEFMODE] = AX25_DEF_AXDEFMODE;
- ax25_dev->values[AX25_VALUES_TEXT] = AX25_DEF_TEXT;
- ax25_dev->values[AX25_VALUES_BACKOFF] = AX25_DEF_BACKOFF;
- ax25_dev->values[AX25_VALUES_CONMODE] = AX25_DEF_CONMODE;
- ax25_dev->values[AX25_VALUES_WINDOW] = AX25_DEF_WINDOW;
- ax25_dev->values[AX25_VALUES_EWINDOW] = AX25_DEF_EWINDOW;
- ax25_dev->values[AX25_VALUES_T1] = AX25_DEF_T1;
- ax25_dev->values[AX25_VALUES_T2] = AX25_DEF_T2;
- ax25_dev->values[AX25_VALUES_T3] = AX25_DEF_T3;
- ax25_dev->values[AX25_VALUES_IDLE] = AX25_DEF_IDLE;
- ax25_dev->values[AX25_VALUES_N2] = AX25_DEF_N2;
- ax25_dev->values[AX25_VALUES_DIGI] = AX25_DEF_DIGI;
- ax25_dev->values[AX25_VALUES_PACLEN] = AX25_DEF_PACLEN;
- ax25_dev->values[AX25_VALUES_MAXQUEUE] = AX25_DEF_MAXQUEUE;
-
- ax25_register_sysctl();
-}
-
-void ax25_dev_device_down(struct device *dev)
-{
- int i;
-
- ax25_unregister_sysctl();
-
- for (i = 0; i < AX25_MAX_DEVICES; i++)
- if (ax25_device[i].dev != NULL && ax25_device[i].dev == dev)
- ax25_device[i].dev = NULL;
-
- ax25_register_sysctl();
-}
-
#ifdef MODULE
/*
- * Free all memory associated with routing and device structures.
+ * Free all memory associated with routing structures.
*/
void ax25_rt_free(void)
{
- struct ax25_route *s, *ax25_rt = ax25_route;
-
+ ax25_route *s, *ax25_rt = ax25_route_list;
+
while (ax25_rt != NULL) {
s = ax25_rt;
ax25_rt = ax25_rt->next;
@@ -597,11 +478,10 @@ void ax25_rt_free(void)
if (s->digipeat != NULL)
kfree_s(s->digipeat, sizeof(ax25_digi));
- kfree_s(s, sizeof(struct ax25_route));
+ kfree_s(s, sizeof(ax25_route));
}
}
#endif
#endif
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 16:16:51 +0000