int ax25_rt_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
ax25_route *ax25_rt;
int len = 0;
off_t pos = 0;
off_t begin = 0;
char *callsign;
int i;
cli();
len += sprintf(buffer, "callsign dev mode digipeaters\n");
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
callsign = ax2asc(&ax25_rt->callsign);
len += sprintf(buffer + len, "%-9s %-4s",
callsign,
ax25_rt->dev ? ax25_rt->dev->name : "???");
switch (ax25_rt->ip_mode) {
case 'V':
len += sprintf(buffer + len, " vc");
break;
case 'D':
len += sprintf(buffer + len, " dg");
break;
default:
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;
}
sti();
*start = buffer + (offset - begin);
len -= (offset - begin);
if (len > length) len = length;
return len;
}
int nr_neigh_get_info(char *buffer, char **start, off_t offset, int length)
{
struct nr_neigh *nr_neigh;
int len = 0;
off_t pos = 0;
off_t begin = 0;
int i;
cli();
len += sprintf(buffer, "addr callsign dev qual lock count failed digipeaters\n");
for (nr_neigh = nr_neigh_list; nr_neigh != NULL; nr_neigh = nr_neigh->next) {
len += sprintf(buffer + len, "%05d %-9s %-4s %3d %d %3d %3d",
nr_neigh->number,
ax2asc(&nr_neigh->callsign),
nr_neigh->dev ? nr_neigh->dev->name : "???",
nr_neigh->quality,
nr_neigh->locked,
nr_neigh->count,
nr_neigh->failed);
if (nr_neigh->digipeat != NULL) {
for (i = 0; i < nr_neigh->digipeat->ndigi; i++)
len += sprintf(buffer + len, " %s", ax2asc(&nr_neigh->digipeat->calls[i]));
}
len += sprintf(buffer + len, "\n");
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;
}
int ax25_uid_get_info(char *buffer, char **start, off_t offset, int length)
{
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;
}
static int ax25_rt_seq_show(struct seq_file *seq, void *v)
{
char buf[11];
if (v == SEQ_START_TOKEN)
seq_puts(seq, "callsign dev mode digipeaters\n");
else {
struct ax25_route *ax25_rt = v;
const char *callsign;
int i;
if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0)
callsign = "default";
else
callsign = ax2asc(buf, &ax25_rt->callsign);
seq_printf(seq, "%-9s %-4s",
callsign,
ax25_rt->dev ? ax25_rt->dev->name : "???");
switch (ax25_rt->ip_mode) {
case 'V':
seq_puts(seq, " vc");
break;
case 'D':
seq_puts(seq, " dg");
break;
default:
seq_puts(seq, " *");
break;
}
if (ax25_rt->digipeat != NULL)
for (i = 0; i < ax25_rt->digipeat->ndigi; i++)
seq_printf(seq, " %s",
ax2asc(buf, &ax25_rt->digipeat->calls[i]));
seq_puts(seq, "\n");
}
return 0;
}
int nr_nodes_get_info(char *buffer, char **start, off_t offset, int length)
{
struct nr_node *nr_node;
int len = 0;
off_t pos = 0;
off_t begin = 0;
int i;
cli();
len += sprintf(buffer, "callsign mnemonic w n qual obs neigh qual obs neigh qual obs neigh\n");
for (nr_node = nr_node_list; nr_node != NULL; nr_node = nr_node->next) {
len += sprintf(buffer + len, "%-9s %-7s %d %d",
ax2asc(&nr_node->callsign),
(nr_node->mnemonic[0] == '\0') ? "*" : nr_node->mnemonic,
nr_node->which + 1,
nr_node->count);
for (i = 0; i < nr_node->count; i++) {
len += sprintf(buffer + len, " %3d %d %05d",
nr_node->routes[i].quality,
nr_node->routes[i].obs_count,
nr_node->routes[i].neighbour->number);
}
len += sprintf(buffer + len, "\n");
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;
}
/*
* Route a frame to an appropriate AX.25 connection.
*/
int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
{
struct rose_neigh *rose_neigh, *new_neigh;
struct rose_route *rose_route;
struct rose_facilities_struct facilities;
rose_address *src_addr, *dest_addr;
struct sock *sk;
unsigned short frametype;
unsigned int lci, new_lci;
unsigned char cause, diagnostic;
struct net_device *dev;
int len, res = 0;
#if 0
if (call_in_firewall(PF_ROSE, skb->dev, skb->data, NULL, &skb) != FW_ACCEPT)
return res;
#endif
frametype = skb->data[2];
lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
src_addr = (rose_address *)(skb->data + 9);
dest_addr = (rose_address *)(skb->data + 4);
spin_lock_bh(&rose_node_list_lock);
spin_lock_bh(&rose_neigh_list_lock);
spin_lock_bh(&rose_route_list_lock);
rose_neigh = rose_neigh_list;
while (rose_neigh != NULL) {
if (ax25cmp(&ax25->dest_addr, &rose_neigh->callsign) == 0 &&
ax25->ax25_dev->dev == rose_neigh->dev)
break;
rose_neigh = rose_neigh->next;
}
if (rose_neigh == NULL) {
printk("rose_route : unknown neighbour or device %s\n",
ax2asc(&ax25->dest_addr));
goto out;
}
/*
* Obviously the link is working, halt the ftimer.
*/
rose_stop_ftimer(rose_neigh);
/*
* LCI of zero is always for us, and its always a restart
* frame.
*/
if (lci == 0) {
rose_link_rx_restart(skb, rose_neigh, frametype);
goto out;
}
/*
* Find an existing socket.
*/
if ((sk = rose_find_socket(lci, rose_neigh)) != NULL) {
if (frametype == ROSE_CALL_REQUEST) {
struct rose_sock *rose = rose_sk(sk);
/* Remove an existing unused socket */
rose_clear_queues(sk);
rose->cause = ROSE_NETWORK_CONGESTION;
rose->diagnostic = 0;
rose->neighbour->use--;
rose->neighbour = NULL;
rose->lci = 0;
rose->state = ROSE_STATE_0;
sk->sk_state = TCP_CLOSE;
sk->sk_err = 0;
sk->sk_shutdown |= SEND_SHUTDOWN;
if (!sock_flag(sk, SOCK_DEAD)) {
sk->sk_state_change(sk);
sock_set_flag(sk, SOCK_DEAD);
}
}
else {
skb->h.raw = skb->data;
res = rose_process_rx_frame(sk, skb);
goto out;
}
}
/*
* Is is a Call Request and is it for us ?
*/
if (frametype == ROSE_CALL_REQUEST)
if ((dev = rose_dev_get(dest_addr)) != NULL) {
res = rose_rx_call_request(skb, dev, rose_neigh, lci);
dev_put(dev);
goto out;
}
if (!sysctl_rose_routing_control) {
rose_transmit_clear_request(rose_neigh, lci, ROSE_NOT_OBTAINABLE, 0);
goto out;
}
/*
* Route it to the next in line if we have an entry for it.
*/
rose_route = rose_route_list;
while (rose_route != NULL) {
if (rose_route->lci1 == lci &&
rose_route->neigh1 == rose_neigh) {
if (frametype == ROSE_CALL_REQUEST) {
/* F6FBB - Remove an existing unused route */
rose_remove_route(rose_route);
break;
} else if (rose_route->neigh2 != NULL) {
skb->data[0] &= 0xF0;
skb->data[0] |= (rose_route->lci2 >> 8) & 0x0F;
skb->data[1] = (rose_route->lci2 >> 0) & 0xFF;
rose_transmit_link(skb, rose_route->neigh2);
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
res = 1;
goto out;
} else {
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
goto out;
}
}
/*
* Route a frame to an appropriate AX.25 connection.
*/
int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
{
struct rose_neigh *rose_neigh, *new_neigh;
struct rose_route *rose_route;
struct rose_facilities_struct facilities;
rose_address *src_addr, *dest_addr;
struct sock *sk;
unsigned short frametype;
unsigned int lci, new_lci;
unsigned char cause, diagnostic;
struct device *dev;
unsigned long flags;
int len;
struct sk_buff *skbn;
#ifdef CONFIG_FIREWALL
if (call_in_firewall(PF_ROSE, skb->dev, skb->data, NULL) != FW_ACCEPT)
return 0;
#endif
frametype = skb->data[2];
lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
src_addr = (rose_address *)(skb->data + 9);
dest_addr = (rose_address *)(skb->data + 4);
for (rose_neigh = rose_neigh_list; rose_neigh != NULL; rose_neigh = rose_neigh->next)
if (ax25cmp(&ax25->dest_addr, &rose_neigh->callsign) == 0 && ax25->device == rose_neigh->dev)
break;
if (rose_neigh == NULL) {
printk("rose_route : unknown neighbour or device %s\n", ax2asc(&ax25->dest_addr));
return 0;
}
/*
* Obviously the link is working, halt the ftimer.
*/
rose_neigh->ftimer = 0;
/*
* LCI of zero is always for us, and its always a restart
* frame.
*/
if (lci == 0) {
rose_link_rx_restart(skb, rose_neigh, frametype);
return 0;
}
/*
* Find an existing socket.
*/
if ((sk = rose_find_socket(lci, rose_neigh)) != NULL) {
if (frametype == ROSE_CALL_REQUEST)
{
/* F6FBB - Remove an existing unused socket */
rose_clear_queues(sk);
sk->protinfo.rose->cause = ROSE_NETWORK_CONGESTION;
sk->protinfo.rose->diagnostic = 0;
sk->protinfo.rose->neighbour->use--;
sk->protinfo.rose->neighbour = NULL;
sk->protinfo.rose->state = ROSE_STATE_0;
sk->state = TCP_CLOSE;
sk->err = 0;
sk->shutdown |= SEND_SHUTDOWN;
if (!sk->dead)
sk->state_change(sk);
sk->dead = 1;
}
else
{
skb->h.raw = skb->data;
return rose_process_rx_frame(sk, skb);
}
}
/*
* Is it a Call Request and is it for us ?
*/
if (frametype == ROSE_CALL_REQUEST)
if ((dev = rose_dev_get(dest_addr)) != NULL) {
return rose_rx_call_request(skb, dev, rose_neigh, lci);
}
if (!sysctl_rose_routing_control) {
rose_transmit_clear_request(rose_neigh, lci, ROSE_NOT_OBTAINABLE, 0);
return 0;
}
/*
* Route it to the next in line if we have an entry for it.
*/
for (rose_route = rose_route_list; rose_route != NULL; rose_route = rose_route->next) {
if (rose_route->tr1.lci == lci && rose_route->tr1.neigh == rose_neigh) {
if (frametype == ROSE_CALL_REQUEST) {
/* F6FBB - Remove an existing unused route */
rose_remove_route(rose_route);
break;
} else if (rose_route->tr2.neigh != NULL) {
if ((skbn = skb_copy(skb, GFP_ATOMIC)) != NULL) {
kfree_skb(skb, FREE_READ);
skb = skbn;
}
skb->data[0] &= 0xF0;
skb->data[0] |= (rose_route->tr2.lci >> 8) & 0x0F;
skb->data[1] = (rose_route->tr2.lci >> 0) & 0xFF;
rose_transmit_link(skb, rose_route->tr2.neigh);
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
return 1;
} else {
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
return 0;
}
}
if (rose_route->tr2.lci == lci && rose_route->tr2.neigh == rose_neigh) {
if (frametype == ROSE_CALL_REQUEST) {
/* F6FBB - Remove an existing unused route */
rose_remove_route(rose_route);
break;
} else if (rose_route->tr1.neigh != NULL) {
if ((skbn = skb_copy(skb, GFP_ATOMIC)) != NULL) {
kfree_skb(skb, FREE_READ);
skb = skbn;
}
skb->data[0] &= 0xF0;
skb->data[0] |= (rose_route->tr1.lci >> 8) & 0x0F;
skb->data[1] = (rose_route->tr1.lci >> 0) & 0xFF;
rose_transmit_link(skb, rose_route->tr1.neigh);
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
return 1;
} else {
if (frametype == ROSE_CLEAR_CONFIRMATION)
rose_remove_route(rose_route);
return 0;
}
}