patch-2.1.27 linux/net/ax25/af_ax25.c
Next file: linux/net/ax25/ax25_addr.c
Previous file: linux/net/ax25/Makefile
Back to the patch index
Back to the overall index
- Lines: 1481
- Date:
Tue Feb 25 17:12:51 1997
- Orig file:
v2.1.26/linux/net/ax25/af_ax25.c
- Orig date:
Sun Feb 2 05:18:48 1997
diff -u --recursive --new-file v2.1.26/linux/net/ax25/af_ax25.c linux/net/ax25/af_ax25.c
@@ -1,5 +1,5 @@
/*
- * AX.25 release 035
+ * 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.
@@ -92,11 +92,7 @@
* Alan(GW4PTS) Added asynchronous support.
* Frederic(F1OAT) Support for pseudo-digipeating.
* Jonathan(G4KLX) Support for packet forwarding.
- *
- * To do:
- * Restructure the ax25_rcv code to be cleaner/faster and
- * copy only when needed.
- * Consider better arbitrary protocol support.
+ * AX.25 036 Jonathan(G4KLX) Major restructuring.
*/
#include <linux/config.h>
@@ -132,128 +128,15 @@
#include <net/ip.h>
#include <net/arp.h>
-/*
- * The null address is defined as a callsign of all spaces with an
- * SSID of zero.
- */
-ax25_address null_ax25_address = {{0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00}};
-
ax25_cb *volatile ax25_list = NULL;
static struct proto_ops ax25_proto_ops;
/*
- * ax25 -> ascii conversion
- */
-char *ax2asc(ax25_address *a)
-{
- static char buf[11];
- char c, *s;
- int n;
-
- for (n = 0, s = buf; n < 6; n++) {
- c = (a->ax25_call[n] >> 1) & 0x7F;
-
- if (c != ' ') *s++ = c;
- }
-
- *s++ = '-';
-
- if ((n = ((a->ax25_call[6] >> 1) & 0x0F)) > 9) {
- *s++ = '1';
- n -= 10;
- }
-
- *s++ = n + '0';
- *s++ = '\0';
-
- if (*buf == '\0' || *buf == '-')
- return "*";
-
- return buf;
-
-}
-
-/*
- * ascii -> ax25 conversion
- */
-ax25_address *asc2ax(char *callsign)
-{
- static ax25_address addr;
- char *s;
- int n;
-
- for (s = callsign, n = 0; n < 6; n++) {
- if (*s != '\0' && *s != '-')
- addr.ax25_call[n] = *s++;
- else
- addr.ax25_call[n] = ' ';
- addr.ax25_call[n] <<= 1;
- addr.ax25_call[n] &= 0xFE;
- }
-
- if (*s++ == '\0') {
- addr.ax25_call[6] = 0x00;
- return &addr;
- }
-
- addr.ax25_call[6] = *s++ - '0';
-
- if (*s != '\0') {
- addr.ax25_call[6] *= 10;
- addr.ax25_call[6] += *s++ - '0';
- }
-
- addr.ax25_call[6] <<= 1;
- addr.ax25_call[6] &= 0x1E;
-
- return &addr;
-}
-
-/*
- * Compare two ax.25 addresses
- */
-int ax25cmp(ax25_address *a, ax25_address *b)
-{
- int ct = 0;
-
- while (ct < 6) {
- if ((a->ax25_call[ct] & 0xFE) != (b->ax25_call[ct] & 0xFE)) /* Clean off repeater bits */
- return 1;
- ct++;
- }
-
- if ((a->ax25_call[ct] & 0x1E) == (b->ax25_call[ct] & 0x1E)) /* SSID without control bit */
- return 0;
-
- return 2; /* Partial match */
-}
-
-/*
- * Compare two AX.25 digipeater paths.
- */
-static int ax25digicmp(ax25_digi *digi1, ax25_digi *digi2)
-{
- int i;
-
- if (digi1->ndigi != digi2->ndigi)
- return 1;
-
- if (digi1->lastrepeat != digi2->lastrepeat)
- return 1;
-
- for (i = 0; i < digi1->ndigi; i++)
- if (ax25cmp(&digi1->calls[i], &digi2->calls[i]) != 0)
- return 1;
-
- return 0;
-}
-
-/*
* Free an allocated ax25 control block. This is done to centralise
* the MOD count code.
*/
-static void ax25_free_cb(ax25_cb *ax25)
+void ax25_free_cb(ax25_cb *ax25)
{
if (ax25->digipeat != NULL) {
kfree_s(ax25->digipeat, sizeof(ax25_digi));
@@ -300,12 +183,16 @@
*/
static void ax25_kill_by_device(struct device *dev)
{
+ ax25_dev *ax25_dev;
ax25_cb *s;
+ if ((ax25_dev = ax25_dev_ax25dev(dev)) == NULL)
+ return;
+
for (s = ax25_list; s != NULL; s = s->next) {
- if (s->device == dev) {
- s->state = AX25_STATE_0;
- s->device = NULL;
+ if (s->ax25_dev == ax25_dev) {
+ s->state = AX25_STATE_0;
+ s->ax25_dev = NULL;
if (s->sk != NULL) {
s->sk->state = TCP_CLOSE;
s->sk->err = ENETUNREACH;
@@ -348,7 +235,7 @@
/*
* Add a socket to the bound sockets list.
*/
-static void ax25_insert_socket(ax25_cb *ax25)
+void ax25_insert_socket(ax25_cb *ax25)
{
unsigned long flags;
@@ -365,7 +252,7 @@
* Find a socket that wants to accept the SABM we have just
* received.
*/
-static struct sock *ax25_find_listener(ax25_address *addr, int digi, struct device *dev, int type)
+struct sock *ax25_find_listener(ax25_address *addr, int digi, struct device *dev, int type)
{
unsigned long flags;
ax25_cb *s;
@@ -378,7 +265,7 @@
continue;
if (s->sk != NULL && ax25cmp(&s->source_addr, addr) == 0 && s->sk->type == type && s->sk->state == TCP_LISTEN) {
/* If device is null we match any device */
- if (s->device == NULL || s->device == dev) {
+ if (s->ax25_dev == NULL || s->ax25_dev->dev == dev) {
restore_flags(flags);
return s->sk;
}
@@ -392,7 +279,7 @@
/*
* Find an AX.25 socket given both ends.
*/
-static struct sock *ax25_find_socket(ax25_address *my_addr, ax25_address *dest_addr, int type)
+struct sock *ax25_find_socket(ax25_address *my_addr, ax25_address *dest_addr, int type)
{
ax25_cb *s;
unsigned long flags;
@@ -416,7 +303,7 @@
* Find an AX.25 control block given both ends. It will only pick up
* floating AX.25 control blocks or non Raw socket bound control blocks.
*/
-static ax25_cb *ax25_find_cb(ax25_address *my_addr, ax25_address *dest_addr, ax25_digi *digi, struct device *dev)
+ax25_cb *ax25_find_cb(ax25_address *my_addr, ax25_address *dest_addr, ax25_digi *digi, struct device *dev)
{
ax25_cb *s;
unsigned long flags;
@@ -427,7 +314,7 @@
for (s = ax25_list; s != NULL; s = s->next) {
if (s->sk != NULL && s->sk->type != SOCK_SEQPACKET)
continue;
- if (ax25cmp(&s->source_addr, my_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->device == dev) {
+ if (ax25cmp(&s->source_addr, my_addr) == 0 && ax25cmp(&s->dest_addr, dest_addr) == 0 && s->ax25_dev->dev == dev) {
if (digi != NULL) {
if (s->digipeat == NULL && digi->ndigi != 0)
continue;
@@ -447,7 +334,7 @@
/*
* Look for any matching address - RAW sockets can bind to arbitrary names
*/
-static struct sock *ax25_addr_match(ax25_address *addr)
+struct sock *ax25_addr_match(ax25_address *addr)
{
unsigned long flags;
ax25_cb *s;
@@ -467,7 +354,7 @@
return NULL;
}
-static void ax25_send_to_raw(struct sock *sk, struct sk_buff *skb, int proto)
+void ax25_send_to_raw(struct sock *sk, struct sk_buff *skb, int proto)
{
struct sk_buff *copy;
@@ -529,7 +416,7 @@
}
if (ax25->sk != NULL) {
- if (ax25->sk->wmem_alloc > 0 || ax25->sk->rmem_alloc > 0) { /* Defer: outstanding buffers */
+ if (ax25->sk->wmem_alloc != 0 || ax25->sk->rmem_alloc != 0) { /* Defer: outstanding buffers */
init_timer(&ax25->timer);
ax25->timer.expires = jiffies + 10 * HZ;
ax25->timer.function = ax25_destroy_timer;
@@ -547,80 +434,6 @@
}
/*
- * Callsign/UID mapper. This is in kernel space for security on multi-amateur machines.
- */
-
-ax25_uid_assoc *ax25_uid_list;
-
-int ax25_uid_policy = 0;
-
-ax25_address *ax25_findbyuid(uid_t uid)
-{
- ax25_uid_assoc *a;
-
- for (a = ax25_uid_list; a != NULL; a = a->next) {
- if (a->uid == uid)
- return &a->call;
- }
-
- return NULL;
-}
-
-static int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
-{
- ax25_uid_assoc *a;
-
- switch (cmd) {
- case SIOCAX25GETUID:
- for (a = ax25_uid_list; a != NULL; a = a->next) {
- if (ax25cmp(&sax->sax25_call, &a->call) == 0)
- return a->uid;
- }
- return -ENOENT;
-
- case SIOCAX25ADDUID:
- if (!suser())
- return -EPERM;
- if (ax25_findbyuid(sax->sax25_uid))
- return -EEXIST;
- if (sax->sax25_uid == 0)
- return -EINVAL;
- a = (ax25_uid_assoc *)kmalloc(sizeof(*a), GFP_KERNEL);
- if (a == NULL)
- return -ENOMEM;
- a->uid = sax->sax25_uid;
- a->call = sax->sax25_call;
- a->next = ax25_uid_list;
- ax25_uid_list = a;
- return 0;
-
- case SIOCAX25DELUID: {
- ax25_uid_assoc **l;
-
- if (!suser())
- return -EPERM;
- l = &ax25_uid_list;
- while ((*l) != NULL) {
- if (ax25cmp(&((*l)->call), &(sax->sax25_call)) == 0) {
- a = *l;
- *l = (*l)->next;
- kfree_s(a, sizeof(*a));
- return 0;
- }
-
- l = &((*l)->next);
- }
- return -ENOENT;
- }
-
- default:
- return -EINVAL;
- }
-
- return -EINVAL; /*NOTREACHED */
-}
-
-/*
* dl1bke 960311: set parameters for existing AX.25 connections,
* includes a KILL command to abort any connection.
* VERY useful for debugging ;-)
@@ -628,7 +441,7 @@
static int ax25_ctl_ioctl(const unsigned int cmd, void *arg)
{
struct ax25_ctl_struct ax25_ctl;
- struct device *dev;
+ ax25_dev *ax25_dev;
ax25_cb *ax25;
unsigned long flags;
int err;
@@ -638,10 +451,10 @@
copy_from_user(&ax25_ctl, arg, sizeof(ax25_ctl));
- if ((dev = ax25rtr_get_dev(&ax25_ctl.port_addr)) == NULL)
+ if ((ax25_dev = ax25_addr_ax25dev(&ax25_ctl.port_addr)) == NULL)
return -ENODEV;
- if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, NULL, dev)) == NULL)
+ if ((ax25 = ax25_find_cb(&ax25_ctl.source_addr, &ax25_ctl.dest_addr, NULL, ax25_dev->dev)) == NULL)
return -ENOTCONN;
switch (ax25_ctl.cmd) {
@@ -659,7 +472,10 @@
ax25->sk->dead = 1;
}
- ax25_dama_off(ax25);
+#ifdef CONFIG_AX25_DAMA_SLAVE
+ if (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL] == AX25_PROTO_DAMA_SLAVE)
+ ax25_dama_off(ax25);
+#endif
ax25_set_timer(ax25);
break;
@@ -725,19 +541,9 @@
case AX25_PACLEN:
if (ax25_ctl.arg < 16 || ax25_ctl.arg > 65535)
return -EINVAL;
-#if 0
- if (ax25_ctl.arg > 256) /* we probably want this */
- printk(KERN_WARNING "ax25_ctl_ioctl: Warning --- huge paclen %d\n", (int)ax25_ctl.arg);
-#endif
ax25->paclen = ax25_ctl.arg;
break;
- case AX25_MAXQUEUE:
- if (ax25_ctl.arg < 1)
- return -EINVAL;
- ax25->maxqueue = ax25_ctl.arg;
- break;
-
default:
return -EINVAL;
}
@@ -748,11 +554,11 @@
/*
* Create an empty AX.25 control block.
*/
-static ax25_cb *ax25_create_cb(void)
+ax25_cb *ax25_create_cb(void)
{
ax25_cb *ax25;
- if ((ax25 = (ax25_cb *)kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
+ if ((ax25 = kmalloc(sizeof(*ax25), GFP_ATOMIC)) == NULL)
return NULL;
MOD_INC_USE_COUNT;
@@ -772,7 +578,6 @@
ax25->t3 = AX25_DEF_T3;
ax25->n2 = AX25_DEF_N2;
ax25->paclen = AX25_DEF_PACLEN;
- ax25->maxqueue= AX25_DEF_MAXQUEUE;
ax25->idle = AX25_DEF_IDLE;
if (AX25_DEF_AXDEFMODE) {
@@ -790,150 +595,30 @@
}
/*
- * Find out if we are a DAMA slave for this device and count the
- * number of connections.
- *
- * dl1bke 951121
- */
-int ax25_dev_is_dama_slave(struct device *dev)
-{
- ax25_cb *ax25;
- int count = 0;
-
- for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
- if (ax25->device == dev && ax25->dama_slave) {
- count++;
- break;
- }
- }
-
- return count;
-}
-
-/*
* Fill in a created AX.25 created control block with the default
* values for a particular device.
*/
-static void ax25_fillin_cb(ax25_cb *ax25, struct device *dev)
+void ax25_fillin_cb(ax25_cb *ax25, ax25_dev *ax25_dev)
{
- ax25->device = dev;
+ ax25->ax25_dev = ax25_dev;
- ax25->rtt = ax25_dev_get_value(dev, AX25_VALUES_T1);
- ax25->t1 = ax25_dev_get_value(dev, AX25_VALUES_T1);
- ax25->t2 = ax25_dev_get_value(dev, AX25_VALUES_T2);
- ax25->t3 = ax25_dev_get_value(dev, AX25_VALUES_T3);
- ax25->n2 = ax25_dev_get_value(dev, AX25_VALUES_N2);
- ax25->paclen = ax25_dev_get_value(dev, AX25_VALUES_PACLEN);
- ax25->maxqueue = ax25_dev_get_value(dev, AX25_VALUES_MAXQUEUE);
- ax25->idle = ax25_dev_get_value(dev, AX25_VALUES_IDLE);
+ ax25->rtt = ax25_dev->values[AX25_VALUES_T1];
+ ax25->t1 = ax25_dev->values[AX25_VALUES_T1];
+ ax25->t2 = ax25_dev->values[AX25_VALUES_T2];
+ ax25->t3 = ax25_dev->values[AX25_VALUES_T3];
+ ax25->n2 = ax25_dev->values[AX25_VALUES_N2];
+ ax25->paclen = ax25_dev->values[AX25_VALUES_PACLEN];
+ ax25->idle = ax25_dev->values[AX25_VALUES_IDLE];
- if (ax25_dev_get_value(dev, AX25_VALUES_AXDEFMODE)) {
+ if (ax25_dev->values[AX25_VALUES_AXDEFMODE]) {
ax25->modulus = AX25_EMODULUS;
- ax25->window = ax25_dev_get_value(dev, AX25_VALUES_EWINDOW);
+ ax25->window = ax25_dev->values[AX25_VALUES_EWINDOW];
} else {
ax25->modulus = AX25_MODULUS;
- ax25->window = ax25_dev_get_value(dev, AX25_VALUES_WINDOW);
- }
-
- ax25->backoff = ax25_dev_get_value(dev, AX25_VALUES_BACKOFF);
-}
-
-int ax25_send_frame(struct sk_buff *skb, int fragment, ax25_address *src, ax25_address *dest,
- ax25_digi *digi, struct device *dev)
-{
- ax25_cb *ax25;
-
- if (skb == NULL)
- return 0;
-
- /*
- * Look for an existing connection.
- */
- for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
- if (ax25->sk != NULL && ax25->sk->type != SOCK_SEQPACKET)
- continue;
-
- if (ax25cmp(&ax25->source_addr, src) == 0 && ax25cmp(&ax25->dest_addr, dest) == 0 && ax25->device == dev) {
- if (ax25_queue_length(ax25, skb) > ax25->maxqueue * ax25->window) {
- kfree_skb(skb, FREE_WRITE);
- } else {
- ax25_output(ax25, fragment, skb);
- }
- ax25->idletimer = ax25->idle;
- return 1; /* It already existed */
- }
- }
-
- if ((ax25 = ax25_create_cb()) == NULL)
- return 0;
-
- ax25_fillin_cb(ax25, dev);
-
- ax25->source_addr = *src;
- ax25->dest_addr = *dest;
-
- if (digi != NULL) {
- if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
- ax25_free_cb(ax25);
- return 0;
- }
- *ax25->digipeat = *digi;
- } else {
- ax25_rt_build_path(ax25, dest, dev);
- }
-
- if (ax25_dev_is_dama_slave(ax25->device))
- dama_establish_data_link(ax25);
- else
- ax25_establish_data_link(ax25);
-
- /* idle timeouts only for mode vc connections */
-
- ax25->idletimer = ax25->idle;
-
- ax25_insert_socket(ax25);
-
- ax25->state = AX25_STATE_1;
-
- ax25_set_timer(ax25);
-
- ax25_output(ax25, fragment, skb);
-
- return 1; /* We had to create it */
-}
-
-/*
- * Return the state of an AX.25 link given source, destination, and
- * device.
- */
-int ax25_link_up(ax25_address *src, ax25_address *dest, struct device *dev)
-{
- ax25_cb *ax25;
-
- for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
- if (ax25->sk != NULL && ax25->sk->type != SOCK_SEQPACKET)
- continue;
-
- if (ax25cmp(&ax25->source_addr, src) == 0 && ax25cmp(&ax25->dest_addr, dest) == 0 && ax25->device == dev)
- return 1;
+ ax25->window = ax25_dev->values[AX25_VALUES_WINDOW];
}
- return 0;
-}
-
-/*
- * Find the AX.25 device that matches the hardware address supplied.
- */
-struct device *ax25rtr_get_dev(ax25_address *addr)
-{
- struct device *dev;
-
- for (dev = dev_base; dev != NULL; dev = dev->next)
- if ((dev->flags & IFF_UP) && dev->type == ARPHRD_AX25 &&
- ax25cmp(addr, (ax25_address*) dev->dev_addr) == 0)
- return dev;
-
- return NULL;
+ ax25->backoff = ax25_dev->values[AX25_VALUES_BACKOFF];
}
/*
@@ -941,24 +626,22 @@
* AX25 socket object
*/
-static int ax25_setsockopt(struct socket *sock, int level, int optname,
- char *optval, int optlen)
+static int ax25_setsockopt(struct socket *sock, int level, int optname, char *optval, int optlen)
{
struct sock *sk = sock->sk;
- int err, opt;
+ int opt;
if (level != SOL_AX25)
- return -EOPNOTSUPP;
+ return -ENOPROTOOPT;
- if (optval == NULL)
+ if(optlen<sizeof(int))
return -EINVAL;
+
+ if(get_user(opt, (int *)optval))
+ return -EFAULT;
- if ((err = verify_area(VERIFY_READ, optval, sizeof(int))) != 0)
- return err;
-
- get_user(opt, (int *)optval);
-
- switch (optname) {
+ switch (optname)
+ {
case AX25_WINDOW:
if (sk->protinfo.ax25->modulus == AX25_MODULUS) {
if (opt < 1 || opt > 7)
@@ -1029,15 +712,18 @@
}
}
-static int ax25_getsockopt(struct socket *sock, int level, int optname,
- char *optval, int *optlen)
+static int ax25_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen)
{
struct sock *sk = sock->sk;
int val = 0;
int err;
+ int len;
if (level != SOL_AX25)
- return -EOPNOTSUPP;
+ return -ENOPROTOOPT;
+
+ if(get_user(len,optlen))
+ return -EFAULT;
switch (optname) {
case AX25_WINDOW:
@@ -1088,16 +774,11 @@
return -ENOPROTOOPT;
}
- if ((err = verify_area(VERIFY_WRITE, optlen, sizeof(int))) != 0)
- return err;
-
- put_user(sizeof(int), optlen);
-
- if ((err = verify_area(VERIFY_WRITE, optval, sizeof(int))) != 0)
- return err;
-
- put_user(val, (int *)optval);
-
+ len=min(len,sizeof(int));
+ if(put_user(len, optlen))
+ return -EFAULT;
+ if(copy_to_user(optval, &val, len))
+ return -EFAULT;
return 0;
}
@@ -1114,7 +795,7 @@
return -EOPNOTSUPP;
}
-static int ax25_create(struct socket *sock, int protocol)
+int ax25_create(struct socket *sock, int protocol)
{
struct sock *sk;
ax25_cb *ax25;
@@ -1182,7 +863,7 @@
return 0;
}
-static struct sock *ax25_make_new(struct sock *osk, struct device *dev)
+struct sock *ax25_make_new(struct sock *osk, struct device *dev)
{
struct sock *sk;
ax25_cb *ax25;
@@ -1195,8 +876,6 @@
return NULL;
}
- ax25_fillin_cb(ax25, dev);
-
switch (osk->type) {
case SOCK_DGRAM:
break;
@@ -1233,14 +912,13 @@
ax25->n2 = osk->protinfo.ax25->n2;
ax25->idle = osk->protinfo.ax25->idle;
ax25->paclen = osk->protinfo.ax25->paclen;
+ ax25->window = osk->protinfo.ax25->window;
- ax25->window = osk->protinfo.ax25->window;
- ax25->maxqueue = osk->protinfo.ax25->maxqueue;
-
+ ax25->ax25_dev = osk->protinfo.ax25->ax25_dev;
ax25->source_addr = osk->protinfo.ax25->source_addr;
if (osk->protinfo.ax25->digipeat != NULL) {
- if ((ax25->digipeat = (ax25_digi *)kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
+ if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
sk_free(sk);
ax25_free_cb(ax25);
return NULL;
@@ -1282,20 +960,9 @@
break;
case AX25_STATE_1:
- ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
- sk->protinfo.ax25->state = AX25_STATE_0;
- sk->state = TCP_CLOSE;
- sk->shutdown |= SEND_SHUTDOWN;
- sk->state_change(sk);
- sk->dead = 1;
- ax25_destroy_socket(sk->protinfo.ax25);
- break;
-
case AX25_STATE_2:
- if (sk->protinfo.ax25->dama_slave)
- ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
- else
- ax25_send_control(sk->protinfo.ax25, AX25_DM, AX25_POLLON, AX25_RESPONSE);
+ ax25_clear_queues(sk->protinfo.ax25);
+ ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
sk->protinfo.ax25->state = AX25_STATE_0;
sk->state = TCP_CLOSE;
sk->shutdown |= SEND_SHUTDOWN;
@@ -1308,11 +975,16 @@
case AX25_STATE_4:
ax25_clear_queues(sk->protinfo.ax25);
sk->protinfo.ax25->n2count = 0;
- if (!sk->protinfo.ax25->dama_slave) {
- ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
- sk->protinfo.ax25->t3timer = 0;
- } else {
- sk->protinfo.ax25->t3timer = sk->protinfo.ax25->t3; /* DAMA slave timeout */
+ switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+ case AX25_PROTO_STD:
+ ax25_send_control(sk->protinfo.ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
+ sk->protinfo.ax25->t3timer = 0;
+ break;
+#ifdef AX25_CONFIG_DAMA_SLAVE
+ case AX25_PROTO_DAMA_SLAVE:
+ sk->protinfo.ax25->t3timer = sk->protinfo.ax25->t3; /* DAMA slave timeout */
+ break;
+#endif
}
sk->protinfo.ax25->t1timer = sk->protinfo.ax25->t1 = ax25_calculate_t1(sk->protinfo.ax25);
sk->protinfo.ax25->state = AX25_STATE_2;
@@ -1350,8 +1022,8 @@
{
struct sock *sk = sock->sk;
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
- struct device *dev;
ax25_address *call;
+ ax25_dev *ax25_dev = NULL;
if (sk->zapped == 0)
return -EINVAL;
@@ -1375,24 +1047,26 @@
if (addr_len == sizeof(struct full_sockaddr_ax25) && addr->fsa_ax25.sax25_ndigis == 1) {
if (ax25cmp(&addr->fsa_digipeater[0], &null_ax25_address) == 0) {
- dev = NULL;
+ ax25_dev = NULL;
SOCK_DEBUG(sk, "AX25: bound to any device\n");
} else {
- if ((dev = ax25rtr_get_dev(&addr->fsa_digipeater[0])) == NULL) {
+ if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_digipeater[0])) == NULL) {
SOCK_DEBUG(sk, "AX25: bind failed - no device\n");
return -EADDRNOTAVAIL;
}
- SOCK_DEBUG(sk, "AX25: bound to device %s\n", dev->name);
+ SOCK_DEBUG(sk, "AX25: bound to device %s\n", ax25_dev->dev->name);
}
} else {
- if ((dev = ax25rtr_get_dev(&addr->fsa_ax25.sax25_call)) == NULL) {
+ if ((ax25_dev = ax25_addr_ax25dev(&addr->fsa_ax25.sax25_call)) == NULL) {
SOCK_DEBUG(sk, "AX25: bind failed - no device\n");
return -EADDRNOTAVAIL;
}
- SOCK_DEBUG(sk, "AX25: bound to device %s\n", dev->name);
+ SOCK_DEBUG(sk, "AX25: bound to device %s\n", ax25_dev->dev->name);
}
- ax25_fillin_cb(sk->protinfo.ax25, dev);
+ if (ax25_dev != NULL)
+ ax25_fillin_cb(sk->protinfo.ax25, ax25_dev);
+
ax25_insert_socket(sk->protinfo.ax25);
sk->zapped = 0;
@@ -1403,8 +1077,7 @@
/*
* FIXME: nonblock behaviour looks like it may have a bug.
*/
-static int ax25_connect(struct socket *sock, struct sockaddr *uaddr,
- int addr_len, int flags)
+static int ax25_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_ax25 *addr = (struct sockaddr_ax25 *)uaddr;
@@ -1444,7 +1117,7 @@
return -EINVAL;
if (sk->protinfo.ax25->digipeat == NULL) {
- if ((sk->protinfo.ax25->digipeat = (ax25_digi *)kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL)
+ if ((sk->protinfo.ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL)
return -ENOBUFS;
}
@@ -1471,14 +1144,14 @@
if (sk->zapped) {
if ((err = ax25_rt_autobind(sk->protinfo.ax25, &addr->sax25_call)) < 0)
return err;
- ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->device);
+ ax25_fillin_cb(sk->protinfo.ax25, sk->protinfo.ax25->ax25_dev);
ax25_insert_socket(sk->protinfo.ax25);
} else {
- if (sk->protinfo.ax25->device == NULL)
+ if (sk->protinfo.ax25->ax25_dev == NULL)
return -EHOSTUNREACH;
}
- if (sk->type == SOCK_SEQPACKET && ax25_find_cb(&sk->protinfo.ax25->source_addr, &addr->sax25_call, NULL, sk->protinfo.ax25->device) != NULL)
+ if (sk->type == SOCK_SEQPACKET && ax25_find_cb(&sk->protinfo.ax25->source_addr, &addr->sax25_call, NULL, sk->protinfo.ax25->ax25_dev->dev) != NULL)
return -EADDRINUSE; /* Already such a connection */
sk->protinfo.ax25->dest_addr = addr->sax25_call;
@@ -1494,10 +1167,16 @@
sock->state = SS_CONNECTING;
sk->state = TCP_SYN_SENT;
- if (ax25_dev_is_dama_slave(sk->protinfo.ax25->device))
- dama_establish_data_link(sk->protinfo.ax25);
- else
- ax25_establish_data_link(sk->protinfo.ax25);
+ switch (sk->protinfo.ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {
+ case AX25_PROTO_STD:
+ ax25_std_establish_data_link(sk->protinfo.ax25);
+ break;
+#ifdef CONFIG_AX25_DAMA_SLAVE
+ case AX25_PROTO_DAMA_SLAVE:
+ ax25_ds_establish_data_link(sk->protinfo.ax25);
+ break;
+#endif
+ }
sk->protinfo.ax25->state = AX25_STATE_1;
ax25_set_timer(sk->protinfo.ax25); /* Start going SABM SABM until a UA or a give up and DM */
@@ -1588,8 +1267,7 @@
return 0;
}
-static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
- int *uaddr_len, int peer)
+static int ax25_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)
{
struct full_sockaddr_ax25 *sax = (struct full_sockaddr_ax25 *)uaddr;
struct sock *sk = sock->sk;
@@ -1616,8 +1294,8 @@
sax->fsa_ax25.sax25_ndigis = 1;
*uaddr_len = sizeof(struct full_sockaddr_ax25);
- if (sk->protinfo.ax25->device != NULL)
- memcpy(&sax->fsa_digipeater[0], sk->protinfo.ax25->device->dev_addr, AX25_ADDR_LEN);
+ if (sk->protinfo.ax25->ax25_dev != NULL)
+ memcpy(&sax->fsa_digipeater[0], sk->protinfo.ax25->ax25_dev->dev->dev_addr, AX25_ADDR_LEN);
else
sax->fsa_digipeater[0] = null_ax25_address;
}
@@ -1625,324 +1303,7 @@
return 0;
}
-static int ax25_rcv(struct sk_buff *skb, struct device *dev, ax25_address *dev_addr, struct packet_type *ptype)
-{
- struct sock *make;
- struct sock *sk;
- int type = 0;
- ax25_digi dp, reverse_dp;
- ax25_cb *ax25;
- ax25_address src, dest;
- ax25_address *next_digi = NULL;
- struct sock *raw;
- int mine = 0;
- int dama;
-
- /*
- * Process the AX.25/LAPB frame.
- */
-
- skb->h.raw = skb->data;
-
-#ifdef CONFIG_FIREWALL
- if (call_in_firewall(PF_AX25, skb->dev, skb->h.raw, NULL) != FW_ACCEPT) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-#endif
-
- /*
- * Parse the address header.
- */
-
- if (ax25_parse_addr(skb->data, skb->len, &src, &dest, &dp, &type, &dama) == NULL) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- /*
- * Ours perhaps ?
- */
- if (dp.lastrepeat + 1 < dp.ndigi) { /* Not yet digipeated completely */
- next_digi = &dp.calls[dp.lastrepeat + 1];
- if (ax25cmp(&dp.calls[dp.lastrepeat + 1], dev_addr) == 0) {
- struct device *dev_out = dev;
-
- if ((skb = skb_unshare(skb, GFP_ATOMIC, FREE_READ)) == NULL)
- return 0;
-
- /* We are the digipeater. Mark ourselves as repeated
- and throw the packet back out of the same device */
- dp.lastrepeat++;
- dp.repeated[(int)dp.lastrepeat] = 1;
-
- if (ax25_dev_get_value(dev, AX25_VALUES_DIGI) & AX25_DIGI_XBAND) {
- while (dp.lastrepeat + 1 < dp.ndigi) {
- struct device *dev_scan;
- if ((dev_scan = ax25rtr_get_dev(&dp.calls[dp.lastrepeat + 1])) == NULL)
- break;
- dp.lastrepeat++;
- dp.repeated[(int)dp.lastrepeat] = 1;
- dev_out = dev_scan;
- }
- if (dev != dev_out && (ax25_dev_get_value(dev_out, AX25_VALUES_DIGI) & AX25_DIGI_XBAND) == 0) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
- }
-
- if (dev == dev_out && (ax25_dev_get_value(dev, AX25_VALUES_DIGI) & AX25_DIGI_INBAND) == 0) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- build_ax25_addr(skb->data, &src, &dest, &dp, type, AX25_MODULUS);
-#ifdef CONFIG_FIREWALL
- if (call_fw_firewall(PF_AX25, skb->dev, skb->data, NULL) != FW_ACCEPT) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-#endif
- skb->dev = dev_out;
- skb->priority = SOPRI_NORMAL;
-
- ax25_queue_xmit(skb);
-
- return 0;
- }
- }
-
- /*
- * Pull of the AX.25 headers leaving the CTRL/PID bytes
- */
- skb_pull(skb, size_ax25_addr(&dp));
-
- /* For our port addresses ? */
- if (ax25cmp(&dest, dev_addr) == 0 && dp.lastrepeat + 1 == dp.ndigi)
- mine = 1;
-
- /* Also match on any registered callsign from L3/4 */
- if (!mine && ax25_listen_mine(&dest, dev) && dp.lastrepeat + 1 == dp.ndigi)
- mine = 1;
-
- /* UI frame - bypass LAPB processing */
- if ((*skb->data & ~0x10) == AX25_UI && dp.lastrepeat + 1 == dp.ndigi) {
- skb->h.raw = skb->data + 2; /* skip control and pid */
-
- if ((raw = ax25_addr_match(&dest)) != NULL)
- ax25_send_to_raw(raw, skb, skb->data[1]);
-
- if (!mine && ax25cmp(&dest, (ax25_address *)dev->broadcast) != 0) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- /* Now we are pointing at the pid byte */
- switch (skb->data[1]) {
-#ifdef CONFIG_INET
- case AX25_P_IP:
- skb_pull(skb,2); /* drop PID/CTRL */
- skb->h.raw = skb->data;
- skb->nh.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = PACKET_HOST;
- ip_rcv(skb, dev, ptype); /* Note ptype here is the wrong one, fix me later */
- break;
-
- case AX25_P_ARP:
- skb_pull(skb,2);
- skb->h.raw = skb->data;
- skb->nh.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = PACKET_HOST;
- arp_rcv(skb, dev, ptype); /* Note ptype here is wrong... */
- break;
-#endif
- case AX25_P_TEXT:
- /* Now find a suitable dgram socket */
- if ((sk = ax25_find_socket(&dest, &src, SOCK_DGRAM)) != NULL) {
- if (sk->rmem_alloc >= sk->rcvbuf) {
- kfree_skb(skb, FREE_READ);
- } else {
- /*
- * Remove the control and PID.
- */
- skb_pull(skb, 2);
- if (sock_queue_rcv_skb(sk, skb) != 0)
- kfree_skb(skb, FREE_READ);
- }
- } else {
- kfree_skb(skb, FREE_READ);
- }
- break;
-
- default:
- kfree_skb(skb, FREE_READ); /* Will scan SOCK_AX25 RAW sockets */
- break;
- }
-
- return 0;
- }
-
- /*
- * Is connected mode supported on this device ?
- * If not, should we DM the incoming frame (except DMs) or
- * silently ignore them. For now we stay quiet.
- */
- if (!ax25_dev_get_value(dev, AX25_VALUES_CONMODE)) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- /* LAPB */
-
- /* AX.25 state 1-4 */
-
- ax25_digi_invert(&dp, &reverse_dp);
-
- if ((ax25 = ax25_find_cb(&dest, &src, &reverse_dp, dev)) != NULL) {
- /*
- * Process the frame. If it is queued up internally it returns one otherwise we
- * free it immediately. This routine itself wakes the user context layers so we
- * do no further work
- */
- if (ax25_process_rx_frame(ax25, skb, type, dama) == 0)
- kfree_skb(skb, FREE_READ);
-
- return 0;
- }
-
- /* AX.25 state 0 (disconnected) */
-
- /* a) received not a SABM(E) */
-
- if ((*skb->data & ~AX25_PF) != AX25_SABM && (*skb->data & ~AX25_PF) != AX25_SABME) {
- /*
- * Never reply to a DM. Also ignore any connects for
- * addresses that are not our interfaces and not a socket.
- */
- if ((*skb->data & ~AX25_PF) != AX25_DM && mine)
- ax25_return_dm(dev, &src, &dest, &dp);
-
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- /* b) received SABM(E) */
-
- if (dp.lastrepeat + 1 == dp.ndigi)
- sk = ax25_find_listener(&dest, 0, dev, SOCK_SEQPACKET);
- else
- sk = ax25_find_listener(next_digi, 1, dev, SOCK_SEQPACKET);
-
- if (sk != NULL) {
- if (sk->ack_backlog == sk->max_ack_backlog || (make = ax25_make_new(sk, dev)) == NULL) {
- if (mine)
- ax25_return_dm(dev, &src, &dest, &dp);
-
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- ax25 = make->protinfo.ax25;
-
- skb_queue_head(&sk->receive_queue, skb);
-
- skb->sk = make;
- make->state = TCP_ESTABLISHED;
- make->pair = sk;
-
- sk->ack_backlog++;
- } else {
- if (!mine) {
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- if ((ax25 = ax25_create_cb()) == NULL) {
- ax25_return_dm(dev, &src, &dest, &dp);
- kfree_skb(skb, FREE_READ);
- return 0;
- }
-
- ax25_fillin_cb(ax25, dev);
- ax25->idletimer = ax25->idle;
- }
-
- ax25->source_addr = dest;
- ax25->dest_addr = src;
-
- /*
- * Sort out any digipeated paths.
- */
- if (dp.ndigi != 0 && ax25->digipeat == NULL && (ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
- kfree_skb(skb, FREE_READ);
- ax25_destroy_socket(ax25);
- return 0;
- }
-
- if (dp.ndigi == 0) {
- if (ax25->digipeat != NULL) {
- kfree_s(ax25->digipeat, sizeof(ax25_digi));
- ax25->digipeat = NULL;
- }
- } else {
- /* Reverse the source SABM's path */
- *ax25->digipeat = reverse_dp;
- }
-
- if ((*skb->data & ~AX25_PF) == AX25_SABME) {
- ax25->modulus = AX25_EMODULUS;
- ax25->window = ax25_dev_get_value(dev, AX25_VALUES_EWINDOW);
- } else {
- ax25->modulus = AX25_MODULUS;
- ax25->window = ax25_dev_get_value(dev, AX25_VALUES_WINDOW);
- }
-
- ax25->device = dev;
-
- ax25_send_control(ax25, AX25_UA, AX25_POLLON, AX25_RESPONSE);
-
- if (dama) ax25_dama_on(ax25); /* bke 951121 */
-
- ax25->dama_slave = dama;
- ax25->t3timer = ax25->t3;
- ax25->state = AX25_STATE_3;
-
- ax25_insert_socket(ax25);
-
- ax25_set_timer(ax25);
-
- if (sk != NULL) {
- if (!sk->dead)
- sk->data_ready(sk, skb->len);
- } else {
- kfree_skb(skb, FREE_READ);
- }
-
- return 0;
-}
-
-/*
- * Receive an AX.25 frame via a SLIP interface.
- */
-static int kiss_rcv(struct sk_buff *skb, struct device *dev, struct packet_type *ptype)
-{
- skb->sk = NULL; /* Initially we don't know who it's for */
-
- if ((*skb->data & 0x0F) != 0) {
- kfree_skb(skb, FREE_READ); /* Not a KISS data frame */
- return 0;
- }
-
- skb_pull(skb, AX25_KISS_HEADER_LEN); /* Remove the KISS byte */
-
- return ax25_rcv(skb, dev, (ax25_address *)dev->dev_addr, ptype);
-}
-
-
-static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, int len,
- struct scm_cookie *scm)
+static int ax25_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
{
struct sock *sk = sock->sk;
struct sockaddr_ax25 *usax = (struct sockaddr_ax25 *)msg->msg_name;
@@ -1967,7 +1328,7 @@
return -EPIPE;
}
- if (sk->protinfo.ax25->device == NULL)
+ if (sk->protinfo.ax25->ax25_dev == NULL)
return -ENETUNREACH;
if (usax != NULL) {
@@ -2020,7 +1381,7 @@
SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n");
/* Assume the worst case */
- size = len + 3 + size_ax25_addr(dp) + AX25_BPQ_HEADER_LEN;
+ size = len + 3 + ax25_addr_size(dp) + AX25_BPQ_HEADER_LEN;
if ((skb = sock_alloc_send_skb(sk, size, 0, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
return err;
@@ -2045,11 +1406,11 @@
return -ENOTCONN;
}
- ax25_output(sk->protinfo.ax25, 1, skb); /* Shove it onto the queue and kick */
+ ax25_output(sk->protinfo.ax25, sk->protinfo.ax25->paclen, skb); /* Shove it onto the queue and kick */
return len;
} else {
- asmptr = skb_push(skb, 1 + size_ax25_addr(dp));
+ asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
@@ -2057,7 +1418,7 @@
SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
/* Build an AX.25 header */
- asmptr += (lv = build_ax25_addr(asmptr, &sk->protinfo.ax25->source_addr, &sax.sax25_call, dp, AX25_COMMAND, AX25_MODULUS));
+ asmptr += (lv = ax25_addr_build(asmptr, &sk->protinfo.ax25->source_addr, &sax.sax25_call, dp, AX25_COMMAND, AX25_MODULUS));
SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
@@ -2068,7 +1429,7 @@
*asmptr = AX25_UI;
/* Datagram frames go straight out of the door as UI */
- skb->dev = sk->protinfo.ax25->device;
+ skb->dev = sk->protinfo.ax25->ax25_dev->dev;
skb->priority = SOPRI_NORMAL;
ax25_queue_xmit(skb);
@@ -2077,8 +1438,7 @@
}
}
-static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags,
- struct scm_cookie *scm)
+static int ax25_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm)
{
struct sock *sk = sock->sk;
struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
@@ -2120,7 +1480,7 @@
ax25_digi digi;
ax25_address dest;
- ax25_parse_addr(skb->data, skb->len, NULL, &dest, &digi, NULL, &dama);
+ ax25_addr_parse(skb->data, skb->len, NULL, &dest, &digi, NULL, &dama);
sax->sax25_family = AF_AX25;
/* We set this correctly, even though we may not let the
@@ -2275,11 +1635,9 @@
return 0;
}
-
static int ax25_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
ax25_cb *ax25;
- struct device *dev;
const char *devname;
int len = 0;
off_t pos = 0;
@@ -2287,13 +1645,13 @@
cli();
- len += sprintf(buffer, "dest_addr src_addr dev st vs vr va t1 t2 t3 idle n2 rtt wnd paclen dama Snd-Q Rcv-Q\n");
+ len += sprintf(buffer, "dest_addr src_addr dev st vs vr va t1 t2 t3 idle n2 rtt wnd paclen Snd-Q Rcv-Q\n");
for (ax25 = ax25_list; ax25 != NULL; ax25 = ax25->next) {
- if ((dev = ax25->device) == NULL)
+ if (ax25->ax25_dev == NULL)
devname = "???";
else
- devname = dev->name;
+ devname = ax25->ax25_dev->dev->name;
len += sprintf(buffer + len, "%-9s ",
ax2asc(&ax25->dest_addr));
@@ -2314,8 +1672,6 @@
ax25->window,
ax25->paclen);
- len += sprintf(buffer + len, " %s", ax25->dama_slave ? " slave" : " no");
-
if (ax25->sk != NULL) {
len += sprintf(buffer + len, " %5d %5d\n",
ax25->sk->wmem_alloc,
@@ -2379,7 +1735,7 @@
{
0, /* MUTTER ntohs(ETH_P_AX25),*/
0, /* copy */
- kiss_rcv,
+ ax25_kiss_rcv,
NULL,
NULL,
};
@@ -2423,7 +1779,7 @@
PROC_NET_AX25_CALLS, 10, "ax25_calls",
S_IFREG | S_IRUGO, 1, 0, 0,
0, &proc_net_inode_operations,
- ax25_cs_get_info
+ ax25_uid_get_info
};
#endif
@@ -2441,157 +1797,9 @@
proc_net_register(&proc_ax25_calls);
#endif
- printk(KERN_INFO "G4KLX/GW4PTS AX.25 for Linux. Version 0.35 for Linux NET3.038 (Linux 2.1)\n");
-}
-
-/*
- * A small shim to dev_queue_xmit to add the KISS control byte, and do
- * any packet forwarding in operation.
- */
-void ax25_queue_xmit(struct sk_buff *skb)
-{
- unsigned char *ptr;
-
-#ifdef CONFIG_FIREWALL
- if (call_out_firewall(PF_AX25, skb->dev, skb->data, NULL) != FW_ACCEPT) {
- dev_kfree_skb(skb, FREE_WRITE);
- return;
- }
-#endif
-
- skb->protocol = htons(ETH_P_AX25);
- skb->dev = ax25_fwd_dev(skb->dev);
- skb->arp = 1;
-
- ptr = skb_push(skb, 1);
- *ptr++ = 0x00; /* KISS */
-
- dev_queue_xmit(skb);
-}
-
-/*
- * IP over AX.25 encapsulation.
- */
-
-/*
- * Shove an AX.25 UI header on an IP packet and handle ARP
- */
-
-#ifdef CONFIG_INET
-
-int ax25_encapsulate(struct sk_buff *skb, struct device *dev, unsigned short type, void *daddr,
- void *saddr, unsigned len)
-{
- /* header is an AX.25 UI frame from us to them */
- unsigned char *buff = skb_push(skb, AX25_HEADER_LEN);
-
- *buff++ = 0; /* KISS DATA */
-
- if (daddr != NULL)
- memcpy(buff, daddr, dev->addr_len); /* Address specified */
-
- buff[6] &= ~AX25_CBIT;
- buff[6] &= ~AX25_EBIT;
- buff[6] |= AX25_SSSID_SPARE;
- buff += AX25_ADDR_LEN;
-
- if (saddr != NULL)
- memcpy(buff, saddr, dev->addr_len);
- else
- memcpy(buff, dev->dev_addr, dev->addr_len);
-
- buff[6] &= ~AX25_CBIT;
- buff[6] |= AX25_EBIT;
- buff[6] |= AX25_SSSID_SPARE;
- buff += AX25_ADDR_LEN;
-
- *buff++ = AX25_UI; /* UI */
-
- /* Append a suitable AX.25 PID */
- switch (type) {
- case ETH_P_IP:
- *buff++ = AX25_P_IP;
- break;
- case ETH_P_ARP:
- *buff++ = AX25_P_ARP;
- break;
- default:
- printk(KERN_ERR "AX.25 wrong protocol type 0x%x2.2\n", type);
- *buff++ = 0;
- break;
- }
-
- if (daddr != NULL)
- return AX25_HEADER_LEN;
-
- return -AX25_HEADER_LEN; /* Unfinished header */
+ printk(KERN_INFO "G4KLX/GW4PTS AX.25 for Linux. Version 0.36 for Linux NET3.038 (Linux 2.1)\n");
}
-int ax25_rebuild_header(struct sk_buff *skb)
-{
- struct sk_buff *ourskb;
- int mode;
- unsigned char *bp = skb->data;
- struct device *dev = skb->dev;
-
- if (arp_find(bp + 1, skb))
- return 1;
-
- if (bp[16] == AX25_P_IP) {
- mode = ax25_ip_mode_get((ax25_address *)(bp + 1), dev);
- if (mode == 'V' || (mode == ' ' && ax25_dev_get_value(dev, AX25_VALUES_IPDEFMODE))) {
- /*
- * We clone the buffer and release the original thereby
- * keeping it straight
- *
- * Note: we report 1 back so the caller will
- * not feed the frame direct to the physical device
- * We don't want that to happen. (It won't be upset
- * as we have pulled the frame from the queue by
- * freeing it).
- */
- if ((ourskb = skb_clone(skb, GFP_ATOMIC)) == NULL) {
- dev_kfree_skb(skb, FREE_WRITE);
- return 1;
- }
-
- if (skb->sk != NULL)
- skb_set_owner_w(ourskb, skb->sk);
-
- kfree_skb(skb, FREE_WRITE);
-
- skb_pull(ourskb, AX25_HEADER_LEN - 1); /* Keep PID */
-
- ax25_send_frame(ourskb, 1, (ax25_address *)(bp + 8), (ax25_address *)(bp + 1), NULL, dev);
-
- return 1;
- }
- }
-
- bp[7] &= ~AX25_CBIT;
- bp[7] &= ~AX25_EBIT;
- bp[7] |= AX25_SSSID_SPARE;
-
- bp[14] &= ~AX25_CBIT;
- bp[14] |= AX25_EBIT;
- bp[14] |= AX25_SSSID_SPARE;
-
- /*
- * dl1bke 960317: we use ax25_queue_xmit here to allow mode datagram
- * over ethernet. I don't know if this is valid, though.
- */
- ax25_dg_build_path(skb, (ax25_address *)(bp + 1), dev);
-
- skb->dev = dev;
- skb->priority = SOPRI_NORMAL;
-
- ax25_queue_xmit(skb);
-
- return 1;
-}
-
-#endif
-
#ifdef MODULE
int init_module(void)
{
@@ -2609,6 +1817,8 @@
proc_net_unregister(PROC_NET_AX25_ROUTE);
#endif
ax25_rt_free();
+ ax25_uid_free();
+ ax25_dev_free();
ax25_unregister_sysctl();
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov