*
* 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.
+ * screw up. It might even work.
*
* This code REQUIRES 2.1.15 or higher
*
* X.25 002 Jonathan Naylor Centralised disconnect handling.
* New timer architecture.
* 2000-03-11 Henner Eisen MSG_EOR handling more POSIX compliant.
- * 2000-03-22 Daniela Squassoni Allowed disabling/enabling of
- * facilities negotiation and increased
+ * 2000-03-22 Daniela Squassoni Allowed disabling/enabling of
+ * facilities negotiation and increased
* the throughput upper limit.
* 2000-08-27 Arnaldo C. Melo s/suser/capable/ + micro cleanups
- * 2000-09-04 Henner Eisen Set sock->state in x25_accept().
+ * 2000-09-04 Henner Eisen Set sock->state in x25_accept().
* Fixed x25_output() related skb leakage.
* 2000-10-02 Henner Eisen Made x25_kick() single threaded per socket.
* 2000-10-27 Henner Eisen MSG_DONTWAIT for fragment allocation.
* response
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/termios.h> /* For TIOCINQ/OUTQ */
#include <linux/notifier.h>
#include <linux/init.h>
+#include <linux/compat.h>
+
#include <net/x25.h>
+#include <net/compat.h>
int sysctl_x25_restart_request_timeout = X25_DEFAULT_T20;
int sysctl_x25_call_request_timeout = X25_DEFAULT_T21;
int sysctl_x25_reset_request_timeout = X25_DEFAULT_T22;
int sysctl_x25_clear_request_timeout = X25_DEFAULT_T23;
int sysctl_x25_ack_holdback_timeout = X25_DEFAULT_T2;
+int sysctl_x25_forward = 0;
HLIST_HEAD(x25_list);
DEFINE_RWLOCK(x25_list_lock);
static struct x25_address null_x25_address = {" "};
+#ifdef CONFIG_COMPAT
+struct compat_x25_subscrip_struct {
+ char device[200-sizeof(compat_ulong_t)];
+ compat_ulong_t global_facil_mask;
+ compat_uint_t extended;
+};
+#endif
+
int x25_addr_ntoa(unsigned char *p, struct x25_address *called_addr,
struct x25_address *calling_addr)
{
- int called_len, calling_len;
+ unsigned int called_len, calling_len;
char *called, *calling;
- int i;
+ unsigned int i;
called_len = (*p >> 0) & 0x0F;
calling_len = (*p >> 4) & 0x0F;
struct net_device *dev = ptr;
struct x25_neigh *nb;
+ if (!net_eq(dev_net(dev), &init_net))
+ return NOTIFY_DONE;
+
if (dev->type == ARPHRD_X25
#if defined(CONFIG_LLC) || defined(CONFIG_LLC_MODULE)
|| dev->type == ARPHRD_ETHER
* call user data vs this sockets call user data
*/
if(skb->len > 0 && x25_sk(s)->cudmatchlength > 0) {
- if((memcmp(x25_sk(s)->calluserdata.cuddata,
- skb->data,
+ if((memcmp(x25_sk(s)->calluserdata.cuddata,
+ skb->data,
x25_sk(s)->cudmatchlength)) == 0) {
sock_hold(s);
goto found;
{
struct sock *sk = sock->sk;
int val, len, rc = -ENOPROTOOPT;
-
+
if (level != SOL_X25 || optname != X25_QBITINCL)
goto out;
rc = -EINVAL;
if (len < 0)
goto out;
-
+
rc = -EFAULT;
if (put_user(len, optlen))
goto out;
.obj_size = sizeof(struct x25_sock),
};
-static struct sock *x25_alloc_socket(void)
+static struct sock *x25_alloc_socket(struct net *net)
{
struct x25_sock *x25;
- struct sock *sk = sk_alloc(AF_X25, GFP_ATOMIC, &x25_proto, 1);
+ struct sock *sk = sk_alloc(net, AF_X25, GFP_ATOMIC, &x25_proto);
if (!sk)
goto out;
return sk;
}
-void x25_init_timers(struct sock *sk);
-
-static int x25_create(struct socket *sock, int protocol)
+static int x25_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
struct x25_sock *x25;
int rc = -ESOCKTNOSUPPORT;
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
if (sock->type != SOCK_SEQPACKET || protocol)
goto out;
rc = -ENOMEM;
- if ((sk = x25_alloc_socket()) == NULL)
+ if ((sk = x25_alloc_socket(net)) == NULL)
goto out;
x25 = x25_sk(sk);
x25->facilities.pacsize_out = X25_DEFAULT_PACKET_SIZE;
x25->facilities.throughput = X25_DEFAULT_THROUGHPUT;
x25->facilities.reverse = X25_DEFAULT_REVERSE;
+ x25->dte_facilities.calling_len = 0;
+ x25->dte_facilities.called_len = 0;
+ memset(x25->dte_facilities.called_ae, '\0',
+ sizeof(x25->dte_facilities.called_ae));
+ memset(x25->dte_facilities.calling_ae, '\0',
+ sizeof(x25->dte_facilities.calling_ae));
+
rc = 0;
out:
return rc;
if (osk->sk_type != SOCK_SEQPACKET)
goto out;
- if ((sk = x25_alloc_socket()) == NULL)
+ if ((sk = x25_alloc_socket(sock_net(osk))) == NULL)
goto out;
x25 = x25_sk(sk);
sk->sk_type = osk->sk_type;
- sk->sk_socket = osk->sk_socket;
sk->sk_priority = osk->sk_priority;
sk->sk_protocol = osk->sk_protocol;
sk->sk_rcvbuf = osk->sk_rcvbuf;
sk->sk_sndbuf = osk->sk_sndbuf;
sk->sk_state = TCP_ESTABLISHED;
- sk->sk_sleep = osk->sk_sleep;
sk->sk_backlog_rcv = osk->sk_backlog_rcv;
sock_copy_flags(sk, osk);
x25->t2 = ox25->t2;
x25->facilities = ox25->facilities;
x25->qbitincl = ox25->qbitincl;
+ x25->dte_facilities = ox25->dte_facilities;
x25->cudmatchlength = ox25->cudmatchlength;
x25->accptapprv = ox25->accptapprv;
break;
}
- sock->sk = NULL;
- sk->sk_socket = NULL; /* Not used, but we should do this */
+ sock_orphan(sk);
out:
return 0;
}
static int x25_wait_for_connection_establishment(struct sock *sk)
{
DECLARE_WAITQUEUE(wait, current);
- int rc;
+ int rc;
add_wait_queue_exclusive(sk->sk_sleep, &wait);
for (;;) {
if (sk->sk_state == TCP_ESTABLISHED)
goto out;
- sk->sk_state = TCP_CLOSE;
+ sk->sk_state = TCP_CLOSE;
sock->state = SS_UNCONNECTED;
rc = -EINVAL;
return rc;
}
-static int x25_wait_for_data(struct sock *sk, int timeout)
+static int x25_wait_for_data(struct sock *sk, long timeout)
{
DECLARE_WAITQUEUE(wait, current);
int rc = 0;
remove_wait_queue(sk->sk_sleep, &wait);
return rc;
}
-
+
static int x25_accept(struct socket *sock, struct socket *newsock, int flags)
{
struct sock *sk = sock->sk;
if (!skb->sk)
goto out2;
newsk = skb->sk;
- newsk->sk_socket = newsock;
- newsk->sk_sleep = &newsock->wait;
+ sock_graft(newsk, newsock);
/* Now attach up the new socket */
skb->sk = NULL;
kfree_skb(skb);
sk->sk_ack_backlog--;
- newsock->sk = newsk;
newsock->state = SS_CONNECTED;
rc = 0;
out2:
return 0;
}
-
+
int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
unsigned int lci)
{
struct x25_sock *makex25;
struct x25_address source_addr, dest_addr;
struct x25_facilities facilities;
- int len, rc;
+ struct x25_dte_facilities dte_facilities;
+ int len, addr_len, rc;
/*
* Remove the LCI and frame type.
* Extract the X.25 addresses and convert them to ASCII strings,
* and remove them.
*/
- skb_pull(skb, x25_addr_ntoa(skb->data, &source_addr, &dest_addr));
+ addr_len = x25_addr_ntoa(skb->data, &source_addr, &dest_addr);
+ skb_pull(skb, addr_len);
/*
* Get the length of the facilities, skip past them for the moment
sk = x25_find_listener(&source_addr,skb);
skb_push(skb,len);
+ if (sk != NULL && sk_acceptq_is_full(sk)) {
+ goto out_sock_put;
+ }
+
/*
- * We can't accept the Call Request.
+ * We dont have any listeners for this incoming call.
+ * Try forwarding it.
*/
- if (sk == NULL || sk_acceptq_is_full(sk))
- goto out_clear_request;
+ if (sk == NULL) {
+ skb_push(skb, addr_len + X25_STD_MIN_LEN);
+ if (sysctl_x25_forward &&
+ x25_forward_call(&dest_addr, nb, skb, lci) > 0)
+ {
+ /* Call was forwarded, dont process it any more */
+ kfree_skb(skb);
+ rc = 1;
+ goto out;
+ } else {
+ /* No listeners, can't forward, clear the call */
+ goto out_clear_request;
+ }
+ }
/*
* Try to reach a compromise on the requested facilities.
*/
- if ((len = x25_negotiate_facilities(skb, sk, &facilities)) == -1)
+ len = x25_negotiate_facilities(skb, sk, &facilities, &dte_facilities);
+ if (len == -1)
goto out_sock_put;
/*
makex25->source_addr = source_addr;
makex25->neighbour = nb;
makex25->facilities = facilities;
+ makex25->dte_facilities= dte_facilities;
makex25->vc_facil_mask = x25_sk(sk)->vc_facil_mask;
/* ensure no reverse facil on accept */
makex25->vc_facil_mask &= ~X25_MASK_REVERSE;
+ /* ensure no calling address extension on accept */
+ makex25->vc_facil_mask &= ~X25_MASK_CALLING_AE;
makex25->cudmatchlength = x25_sk(sk)->cudmatchlength;
/* Normally all calls are accepted immediatly */
* Incoming Call User Data.
*/
if (skb->len >= 0) {
- memcpy(makex25->calluserdata.cuddata, skb->data, skb->len);
+ skb_copy_from_linear_data(skb, makex25->calluserdata.cuddata, skb->len);
makex25->calluserdata.cudlength = skb->len;
}
*/
SOCK_DEBUG(sk, "x25_sendmsg: Copying user data\n");
- asmptr = skb->h.raw = skb_put(skb, len);
+ skb_reset_transport_header(skb);
+ skb_put(skb, len);
- rc = memcpy_fromiovec(asmptr, msg->msg_iov, len);
+ rc = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
if (rc)
goto out_kfree_skb;
if (msg->msg_flags & MSG_OOB)
skb_queue_tail(&x25->interrupt_out_queue, skb);
else {
- len = x25_output(sk, skb);
+ len = x25_output(sk, skb);
if (len < 0)
kfree_skb(skb);
else if (x25->qbitincl)
}
}
- skb->h.raw = skb->data;
-
+ skb_reset_transport_header(skb);
copied = skb->len;
if (copied > size) {
msg->msg_flags |= MSG_TRUNC;
}
- /* Currently, each datagram always contains a complete record */
+ /* Currently, each datagram always contains a complete record */
msg->msg_flags |= MSG_EOR;
rc = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
case SIOCGSTAMP:
rc = -EINVAL;
if (sk)
- rc = sock_get_timestamp(sk,
- (struct timeval __user *)argp);
+ rc = sock_get_timestamp(sk,
+ (struct timeval __user *)argp);
+ break;
+ case SIOCGSTAMPNS:
+ rc = -EINVAL;
+ if (sk)
+ rc = sock_get_timestampns(sk,
+ (struct timespec __user *)argp);
break;
case SIOCGIFADDR:
case SIOCSIFADDR:
break;
}
+ case SIOCX25GDTEFACILITIES: {
+ rc = copy_to_user(argp, &x25->dte_facilities,
+ sizeof(x25->dte_facilities));
+ if (rc)
+ rc = -EFAULT;
+ break;
+ }
+
+ case SIOCX25SDTEFACILITIES: {
+ struct x25_dte_facilities dtefacs;
+ rc = -EFAULT;
+ if (copy_from_user(&dtefacs, argp, sizeof(dtefacs)))
+ break;
+ rc = -EINVAL;
+ if (sk->sk_state != TCP_LISTEN &&
+ sk->sk_state != TCP_CLOSE)
+ break;
+ if (dtefacs.calling_len > X25_MAX_AE_LEN)
+ break;
+ if (dtefacs.calling_ae == NULL)
+ break;
+ if (dtefacs.called_len > X25_MAX_AE_LEN)
+ break;
+ if (dtefacs.called_ae == NULL)
+ break;
+ x25->dte_facilities = dtefacs;
+ rc = 0;
+ break;
+ }
+
case SIOCX25GCALLUSERDATA: {
struct x25_calluserdata cud = x25->calluserdata;
rc = copy_to_user(argp, &cud,
if (copy_from_user(&sub_addr, argp,
sizeof(sub_addr)))
break;
- rc = -EINVAL;
+ rc = -EINVAL;
if(sub_addr.cudmatchlength > X25_MAX_CUD_LEN)
break;
x25->cudmatchlength = sub_addr.cudmatchlength;
break;
}
- default:
+ default:
rc = -ENOIOCTLCMD;
break;
}
.owner = THIS_MODULE,
};
+#ifdef CONFIG_COMPAT
+static int compat_x25_subscr_ioctl(unsigned int cmd,
+ struct compat_x25_subscrip_struct __user *x25_subscr32)
+{
+ struct compat_x25_subscrip_struct x25_subscr;
+ struct x25_neigh *nb;
+ struct net_device *dev;
+ int rc = -EINVAL;
+
+ rc = -EFAULT;
+ if (copy_from_user(&x25_subscr, x25_subscr32, sizeof(*x25_subscr32)))
+ goto out;
+
+ rc = -EINVAL;
+ dev = x25_dev_get(x25_subscr.device);
+ if (dev == NULL)
+ goto out;
+
+ nb = x25_get_neigh(dev);
+ if (nb == NULL)
+ goto out_dev_put;
+
+ dev_put(dev);
+
+ if (cmd == SIOCX25GSUBSCRIP) {
+ x25_subscr.extended = nb->extended;
+ x25_subscr.global_facil_mask = nb->global_facil_mask;
+ rc = copy_to_user(x25_subscr32, &x25_subscr,
+ sizeof(*x25_subscr32)) ? -EFAULT : 0;
+ } else {
+ rc = -EINVAL;
+ if (x25_subscr.extended == 0 || x25_subscr.extended == 1) {
+ rc = 0;
+ nb->extended = x25_subscr.extended;
+ nb->global_facil_mask = x25_subscr.global_facil_mask;
+ }
+ }
+ x25_neigh_put(nb);
+out:
+ return rc;
+out_dev_put:
+ dev_put(dev);
+ goto out;
+}
+
+static int compat_x25_ioctl(struct socket *sock, unsigned int cmd,
+ unsigned long arg)
+{
+ void __user *argp = compat_ptr(arg);
+ struct sock *sk = sock->sk;
+
+ int rc = -ENOIOCTLCMD;
+
+ switch(cmd) {
+ case TIOCOUTQ:
+ case TIOCINQ:
+ rc = x25_ioctl(sock, cmd, (unsigned long)argp);
+ break;
+ case SIOCGSTAMP:
+ rc = -EINVAL;
+ if (sk)
+ rc = compat_sock_get_timestamp(sk,
+ (struct timeval __user*)argp);
+ break;
+ case SIOCGSTAMPNS:
+ rc = -EINVAL;
+ if (sk)
+ rc = compat_sock_get_timestampns(sk,
+ (struct timespec __user*)argp);
+ break;
+ case SIOCGIFADDR:
+ case SIOCSIFADDR:
+ case SIOCGIFDSTADDR:
+ case SIOCSIFDSTADDR:
+ case SIOCGIFBRDADDR:
+ case SIOCSIFBRDADDR:
+ case SIOCGIFNETMASK:
+ case SIOCSIFNETMASK:
+ case SIOCGIFMETRIC:
+ case SIOCSIFMETRIC:
+ rc = -EINVAL;
+ break;
+ case SIOCADDRT:
+ case SIOCDELRT:
+ rc = -EPERM;
+ if (!capable(CAP_NET_ADMIN))
+ break;
+ rc = x25_route_ioctl(cmd, argp);
+ break;
+ case SIOCX25GSUBSCRIP:
+ rc = compat_x25_subscr_ioctl(cmd, argp);
+ break;
+ case SIOCX25SSUBSCRIP:
+ rc = -EPERM;
+ if (!capable(CAP_NET_ADMIN))
+ break;
+ rc = compat_x25_subscr_ioctl(cmd, argp);
+ break;
+ case SIOCX25GFACILITIES:
+ case SIOCX25SFACILITIES:
+ case SIOCX25GDTEFACILITIES:
+ case SIOCX25SDTEFACILITIES:
+ case SIOCX25GCALLUSERDATA:
+ case SIOCX25SCALLUSERDATA:
+ case SIOCX25GCAUSEDIAG:
+ case SIOCX25SCUDMATCHLEN:
+ case SIOCX25CALLACCPTAPPRV:
+ case SIOCX25SENDCALLACCPT:
+ rc = x25_ioctl(sock, cmd, (unsigned long)argp);
+ break;
+ default:
+ rc = -ENOIOCTLCMD;
+ break;
+ }
+ return rc;
+}
+#endif
+
static const struct proto_ops SOCKOPS_WRAPPED(x25_proto_ops) = {
.family = AF_X25,
.owner = THIS_MODULE,
.getname = x25_getname,
.poll = datagram_poll,
.ioctl = x25_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = compat_x25_ioctl,
+#endif
.listen = x25_listen,
.shutdown = sock_no_shutdown,
.setsockopt = x25_setsockopt,
.sendpage = sock_no_sendpage,
};
-#include <linux/smp_lock.h>
SOCKOPS_WRAP(x25_proto, AF_X25);
static struct packet_type x25_packet_type = {
x25_disconnect(s, ENETUNREACH, 0, 0);
write_unlock_bh(&x25_list_lock);
+
+ /* Remove any related forwards */
+ x25_clear_forward_by_dev(nb->dev);
}
static int __init x25_init(void)
register_netdevice_notifier(&x25_dev_notifier);
- printk(KERN_INFO "X.25 for Linux. Version 0.2 for Linux 2.1.15\n");
+ printk(KERN_INFO "X.25 for Linux Version 0.2\n");
#ifdef CONFIG_SYSCTL
x25_register_sysctl();
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff