Exemple #1
0
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;
} 
Exemple #2
0
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;
} 
Exemple #3
0
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;
}
Exemple #4
0
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;
}
Exemple #5
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;
} 
Exemple #6
0
/*
 *	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;
            }
        }
Exemple #7
0
/*
 *	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;
			}
		}