Merge branch 'master' of /home/trondmy/kernel/linux-2.6/

Conflicts:

	net/sunrpc/auth_gss/gss_krb5_crypto.c
	net/sunrpc/auth_gss/gss_spkm3_token.c
	net/sunrpc/clnt.c

Merge with mainline and fix conflicts.

12 files changed, 378 insertions, 75 deletions

diff --git a/net/x25/Makefile b/net/x25/Makefile
index 587a71aa411d..a2c34ab6f194 100644
--- a/net/x25/Makefile
+++ b/net/x25/Makefile
@@ -6,5 +6,5 @@ obj-$(CONFIG_X25) += x25.o
 
 x25-y                   := af_x25.o x25_dev.o x25_facilities.o x25_in.o \
                            x25_link.o x25_out.o x25_route.o x25_subr.o \
-                           x25_timer.o x25_proc.o
+                           x25_timer.o x25_proc.o x25_forward.o
 x25-$(CONFIG_SYSCTL)    += sysctl_net_x25.o
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index b5c80b189902..e62ba41b05c5 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -18,11 +18,11 @@
  *      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.
@@ -63,6 +63,7 @@ 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);
@@ -255,8 +256,8 @@ static struct sock *x25_find_listener(struct x25_address *addr,
                          * 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;
@@ -420,7 +421,7 @@ static int x25_getsockopt(struct socket *sock, int level, int optname,
 {
         struct sock *sk = sock->sk;
         int val, len, rc = -ENOPROTOOPT;
-        
+
         if (level != SOL_X25 || optname != X25_QBITINCL)
                 goto out;
 
@@ -433,7 +434,7 @@ static int x25_getsockopt(struct socket *sock, int level, int optname,
         rc = -EINVAL;
         if (len < 0)
                 goto out;
-                
+
         rc = -EFAULT;
         if (put_user(len, optlen))
                 goto out;
@@ -522,12 +523,12 @@ static int x25_create(struct socket *sock, int protocol)
         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));
+        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:
@@ -607,7 +608,7 @@ static int x25_release(struct socket *sock)
                         break;
         }
 
-        sock->sk        = NULL; 
+        sock->sk        = NULL;
         sk->sk_socket   = NULL; /* Not used, but we should do this */
 out:
         return 0;
@@ -634,7 +635,7 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 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 (;;) {
@@ -685,7 +686,7 @@ static int x25_connect(struct socket *sock, struct sockaddr *uaddr,
         if (sk->sk_state == TCP_ESTABLISHED)
                 goto out;
 
-        sk->sk_state   = TCP_CLOSE;     
+        sk->sk_state   = TCP_CLOSE;
         sock->state = SS_UNCONNECTED;
 
         rc = -EINVAL;
@@ -777,7 +778,7 @@ static int x25_wait_for_data(struct sock *sk, long timeout)
         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;
@@ -836,7 +837,7 @@ static int x25_getname(struct socket *sock, struct sockaddr *uaddr,
 
         return 0;
 }
- 
+
 int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
                         unsigned int lci)
 {
@@ -846,7 +847,7 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
         struct x25_address source_addr, dest_addr;
         struct x25_facilities facilities;
         struct x25_dte_facilities dte_facilities;
-        int len, rc;
+        int len, addr_len, rc;
 
         /*
          *      Remove the LCI and frame type.
@@ -857,7 +858,8 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
          *      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
@@ -873,11 +875,28 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
         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.
@@ -1101,7 +1120,7 @@ static int x25_sendmsg(struct kiocb *iocb, struct socket *sock,
         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)
@@ -1200,7 +1219,7 @@ static int x25_recvmsg(struct kiocb *iocb, struct socket *sock,
                 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);
@@ -1258,8 +1277,8 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 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 SIOCGIFADDR:
                 case SIOCSIFADDR:
@@ -1327,17 +1346,17 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                 }
 
                 case SIOCX25GDTEFACILITIES: {
-                        rc = copy_to_user(argp, &x25->dte_facilities,
+                        rc = copy_to_user(argp, &x25->dte_facilities,
                                                 sizeof(x25->dte_facilities));
                         if (rc)
                                 rc = -EFAULT;
-                        break;
-                }
+                        break;
+                }
 
-                case SIOCX25SDTEFACILITIES: {
-                        struct x25_dte_facilities dtefacs;
-                        rc = -EFAULT;
-                        if (copy_from_user(&dtefacs, argp, sizeof(dtefacs)))
+                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 &&
@@ -1395,7 +1414,7 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         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;
@@ -1424,7 +1443,7 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         break;
                 }
 
-                default:
+                default:
                         rc = -ENOIOCTLCMD;
                         break;
         }
@@ -1598,6 +1617,9 @@ void x25_kill_by_neigh(struct x25_neigh *nb)
                         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)
diff --git a/net/x25/sysctl_net_x25.c b/net/x25/sysctl_net_x25.c
index aabda59c824e..5f631061c229 100644
--- a/net/x25/sysctl_net_x25.c
+++ b/net/x25/sysctl_net_x25.c
@@ -18,7 +18,7 @@ static int max_timer[] = { 300 * HZ };
 static struct ctl_table_header *x25_table_header;
 
 static struct ctl_table x25_table[] = {
-        {
+        {
                 .ctl_name =     NET_X25_RESTART_REQUEST_TIMEOUT,
                 .procname =     "restart_request_timeout",
                 .data =         &sysctl_x25_restart_request_timeout,
@@ -29,7 +29,7 @@ static struct ctl_table x25_table[] = {
                 .extra1 =       &min_timer,
                 .extra2 =       &max_timer,
         },
-        {
+        {
                 .ctl_name =     NET_X25_CALL_REQUEST_TIMEOUT,
                 .procname =     "call_request_timeout",
                 .data =         &sysctl_x25_call_request_timeout,
@@ -40,7 +40,7 @@ static struct ctl_table x25_table[] = {
                 .extra1 =       &min_timer,
                 .extra2 =       &max_timer,
         },
-        {
+        {
                 .ctl_name =     NET_X25_RESET_REQUEST_TIMEOUT,
                 .procname =     "reset_request_timeout",
                 .data =         &sysctl_x25_reset_request_timeout,
@@ -51,7 +51,7 @@ static struct ctl_table x25_table[] = {
                 .extra1 =       &min_timer,
                 .extra2 =       &max_timer,
         },
-        {
+        {
                 .ctl_name =     NET_X25_CLEAR_REQUEST_TIMEOUT,
                 .procname =     "clear_request_timeout",
                 .data =         &sysctl_x25_clear_request_timeout,
@@ -62,7 +62,7 @@ static struct ctl_table x25_table[] = {
                 .extra1 =       &min_timer,
                 .extra2 =       &max_timer,
         },
-        {
+        {
                 .ctl_name =     NET_X25_ACK_HOLD_BACK_TIMEOUT,
                 .procname =     "acknowledgement_hold_back_timeout",
                 .data =         &sysctl_x25_ack_holdback_timeout,
@@ -73,6 +73,14 @@ static struct ctl_table x25_table[] = {
                 .extra1 =       &min_timer,
                 .extra2 =       &max_timer,
         },
+        {
+                .ctl_name =     NET_X25_FORWARD,
+                .procname =     "x25_forward",
+                .data =         &sysctl_x25_forward,
+                .maxlen =       sizeof(int),
+                .mode =         0644,
+                .proc_handler = &proc_dointvec,
+        },
         { 0, },
 };
 
diff --git a/net/x25/x25_dev.c b/net/x25/x25_dev.c
index 328d80f000ad..c7221de98a95 100644
--- a/net/x25/x25_dev.c
+++ b/net/x25/x25_dev.c
@@ -1,8 +1,8 @@
 /*
  *      X.25 Packet Layer release 002
  *
- *      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 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 2.1.15 or higher
  *
@@ -31,7 +31,7 @@ static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *nb)
         unsigned int lci;
 
         frametype = skb->data[2];
-        lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
+        lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
 
         /*
          *      LCI of zero is always for us, and its always a link control
@@ -67,9 +67,18 @@ static int x25_receive_data(struct sk_buff *skb, struct x25_neigh *nb)
                 return x25_rx_call_request(skb, nb, lci);
 
         /*
-         *      Its not a Call Request, nor is it a control frame.
-         *      Let caller throw it away.
+         *      Its not a Call Request, nor is it a control frame.
+         *      Can we forward it?
          */
+
+        if (x25_forward_data(lci, nb, skb)) {
+                if (frametype == X25_CLEAR_CONFIRMATION) {
+                        x25_clear_forward_by_lci(lci);
+                }
+                kfree_skb(skb);
+                return 1;
+        }
+
 /*
         x25_transmit_clear_request(nb, lci, 0x0D);
 */
diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c
index 27f5cc7966f6..dec404afa113 100644
--- a/net/x25/x25_facilities.c
+++ b/net/x25/x25_facilities.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -15,7 +15,7 @@
  *
  *      History
  *      X.25 001        Split from x25_subr.c
- *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities 
+ *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities
  *                                        negotiation.
  *      apr/14/05       Shaun Pereira - Allow fast select with no restriction
  *                                      on response.
@@ -125,8 +125,8 @@ int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities,
                         break;
                 case X25_FAC_CLASS_D:
                         switch (*p) {
-                        case X25_FAC_CALLING_AE:
-                                if (p[1] > X25_MAX_DTE_FACIL_LEN)
+                        case X25_FAC_CALLING_AE:
+                                if (p[1] > X25_MAX_DTE_FACIL_LEN)
                                         break;
                                 dte_facs->calling_len = p[2];
                                 memcpy(dte_facs->calling_ae, &p[3], p[1] - 1);
@@ -293,7 +293,7 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk,
 }
 
 /*
- *      Limit values of certain facilities according to the capability of the 
+ *      Limit values of certain facilities according to the capability of the
  *      currently attached x25 link.
  */
 void x25_limit_facilities(struct x25_facilities *facilities,
diff --git a/net/x25/x25_forward.c b/net/x25/x25_forward.c
new file mode 100644
index 000000000000..d339e0c810a8
--- /dev/null
+++ b/net/x25/x25_forward.c
@@ -0,0 +1,163 @@
+/*
+ *      This module:
+ *              This module is free software; you can redistribute it and/or
+ *              modify it under the terms of the GNU General Public License
+ *              as published by the Free Software Foundation; either version
+ *              2 of the License, or (at your option) any later version.
+ *
+ *      History
+ *      03-01-2007      Added forwarding for x.25       Andrew Hendry
+ */
+#include <linux/if_arp.h>
+#include <linux/init.h>
+#include <net/x25.h>
+
+struct list_head x25_forward_list = LIST_HEAD_INIT(x25_forward_list);
+DEFINE_RWLOCK(x25_forward_list_lock);
+
+int x25_forward_call(struct x25_address *dest_addr, struct x25_neigh *from,
+                        struct sk_buff *skb, int lci)
+{
+        struct x25_route *rt;
+        struct x25_neigh *neigh_new = NULL;
+        struct list_head *entry;
+        struct x25_forward *x25_frwd, *new_frwd;
+        struct sk_buff *skbn;
+        short same_lci = 0;
+        int rc = 0;
+
+        if ((rt = x25_get_route(dest_addr)) != NULL) {
+
+                if ((neigh_new = x25_get_neigh(rt->dev)) == NULL) {
+                        /* This shouldnt happen, if it occurs somehow
+                         * do something sensible
+                         */
+                        goto out_put_route;
+                }
+
+                /* Avoid a loop. This is the normal exit path for a
+                 * system with only one x.25 iface and default route
+                 */
+                if (rt->dev == from->dev) {
+                        goto out_put_nb;
+                }
+
+                /* Remote end sending a call request on an already
+                 * established LCI? It shouldnt happen, just in case..
+                 */
+                read_lock_bh(&x25_forward_list_lock);
+                list_for_each(entry, &x25_forward_list) {
+                        x25_frwd = list_entry(entry, struct x25_forward, node);
+                        if (x25_frwd->lci == lci) {
+                                printk(KERN_WARNING "X.25: call request for lci which is already registered!, transmitting but not registering new pair\n");
+                                same_lci = 1;
+                        }
+                }
+                read_unlock_bh(&x25_forward_list_lock);
+
+                /* Save the forwarding details for future traffic */
+                if (!same_lci){
+                        if ((new_frwd = kmalloc(sizeof(struct x25_forward),
+                                                        GFP_ATOMIC)) == NULL){
+                                rc = -ENOMEM;
+                                goto out_put_nb;
+                        }
+                        new_frwd->lci = lci;
+                        new_frwd->dev1 = rt->dev;
+                        new_frwd->dev2 = from->dev;
+                        write_lock_bh(&x25_forward_list_lock);
+                        list_add(&new_frwd->node, &x25_forward_list);
+                        write_unlock_bh(&x25_forward_list_lock);
+                }
+
+                /* Forward the call request */
+                if ( (skbn = skb_clone(skb, GFP_ATOMIC)) == NULL){
+                        goto out_put_nb;
+                }
+                x25_transmit_link(skbn, neigh_new);
+                rc = 1;
+        }
+
+
+out_put_nb:
+        x25_neigh_put(neigh_new);
+
+out_put_route:
+        x25_route_put(rt);
+        return rc;
+}
+
+
+int x25_forward_data(int lci, struct x25_neigh *from, struct sk_buff *skb) {
+
+        struct x25_forward *frwd;
+        struct list_head *entry;
+        struct net_device *peer = NULL;
+        struct x25_neigh *nb;
+        struct sk_buff *skbn;
+        int rc = 0;
+
+        read_lock_bh(&x25_forward_list_lock);
+        list_for_each(entry, &x25_forward_list) {
+                frwd = list_entry(entry, struct x25_forward, node);
+                if (frwd->lci == lci) {
+                        /* The call is established, either side can send */
+                        if (from->dev == frwd->dev1) {
+                                peer = frwd->dev2;
+                        } else {
+                                peer = frwd->dev1;
+                        }
+                        break;
+                }
+        }
+        read_unlock_bh(&x25_forward_list_lock);
+
+        if ( (nb = x25_get_neigh(peer)) == NULL)
+                goto out;
+
+        if ( (skbn = pskb_copy(skb, GFP_ATOMIC)) == NULL){
+                goto out;
+
+        }
+        x25_transmit_link(skbn, nb);
+
+        x25_neigh_put(nb);
+        rc = 1;
+out:
+        return rc;
+}
+
+void x25_clear_forward_by_lci(unsigned int lci)
+{
+        struct x25_forward *fwd;
+        struct list_head *entry, *tmp;
+
+        write_lock_bh(&x25_forward_list_lock);
+
+        list_for_each_safe(entry, tmp, &x25_forward_list) {
+                fwd = list_entry(entry, struct x25_forward, node);
+                if (fwd->lci == lci) {
+                        list_del(&fwd->node);
+                        kfree(fwd);
+                }
+        }
+        write_unlock_bh(&x25_forward_list_lock);
+}
+
+
+void x25_clear_forward_by_dev(struct net_device *dev)
+{
+        struct x25_forward *fwd;
+        struct list_head *entry, *tmp;
+
+        write_lock_bh(&x25_forward_list_lock);
+
+        list_for_each_safe(entry, tmp, &x25_forward_list) {
+                fwd = list_entry(entry, struct x25_forward, node);
+                if ((fwd->dev1 == dev) || (fwd->dev2 == dev)){
+                        list_del(&fwd->node);
+                        kfree(fwd);
+                }
+        }
+        write_unlock_bh(&x25_forward_list_lock);
+}
diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c
index eed50e10f09b..c5239fcdefa0 100644
--- a/net/x25/x25_in.c
+++ b/net/x25/x25_in.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -17,7 +17,7 @@
  *      X.25 001        Jonathan Naylor   Started coding.
  *      X.25 002        Jonathan Naylor   Centralised disconnection code.
  *                                        New timer architecture.
- *      2000-03-20      Daniela Squassoni Disabling/enabling of facilities 
+ *      2000-03-20      Daniela Squassoni Disabling/enabling of facilities
  *                                        negotiation.
  *      2000-11-10      Henner Eisen      Check and reset for out-of-sequence
  *                                        i-frames.
@@ -67,7 +67,7 @@ static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
                         kfree_skb(skbo);
                 }
 
-                x25->fraglen = 0;               
+                x25->fraglen = 0;
         }
 
         skb_set_owner_r(skbn, sk);
@@ -167,7 +167,7 @@ static int x25_state3_machine(struct sock *sk, struct sk_buff *skb, int frametyp
         int queued = 0;
         int modulus;
         struct x25_sock *x25 = x25_sk(sk);
-        
+
         modulus = (x25->neighbour->extended) ? X25_EMODULUS : X25_SMODULUS;
 
         switch (frametype) {
diff --git a/net/x25/x25_link.c b/net/x25/x25_link.c
index 0a760fe66843..741ce95d4ad1 100644
--- a/net/x25/x25_link.c
+++ b/net/x25/x25_link.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -16,7 +16,7 @@
  *      History
  *      X.25 001        Jonathan Naylor   Started coding.
  *      X.25 002        Jonathan Naylor   New timer architecture.
- *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities 
+ *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities
  *                                        negotiation.
  *      2000-09-04      Henner Eisen      dev_hold() / dev_put() for x25_neigh.
  */
@@ -94,7 +94,7 @@ void x25_link_control(struct sk_buff *skb, struct x25_neigh *nb,
                                skb->data[3], skb->data[4],
                                skb->data[5], skb->data[6]);
                         break;
-                        
+
                 default:
                         printk(KERN_WARNING "x25: received unknown %02X "
                                "with LCI 000\n", frametype);
diff --git a/net/x25/x25_out.c b/net/x25/x25_out.c
index a2e62cea819a..6f5737853912 100644
--- a/net/x25/x25_out.c
+++ b/net/x25/x25_out.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -78,7 +78,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
                                                "sent\n", err, sent);
                                 return err;
                         }
-                                
+
                         skb_reserve(skbn, frontlen);
 
                         len = max_len > skb->len ? skb->len : max_len;
@@ -101,7 +101,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
                         skb_queue_tail(&sk->sk_write_queue, skbn);
                         sent += len;
                 }
-                
+
                 kfree_skb(skb);
         } else {
                 skb_queue_tail(&sk->sk_write_queue, skb);
@@ -110,7 +110,7 @@ int x25_output(struct sock *sk, struct sk_buff *skb)
         return sent;
 }
 
-/* 
+/*
  *      This procedure is passed a buffer descriptor for an iframe. It builds
  *      the rest of the control part of the frame and then writes it out.
  */
@@ -131,7 +131,7 @@ static void x25_send_iframe(struct sock *sk, struct sk_buff *skb)
                 skb->data[2] |= (x25->vr << 5) & 0xE0;
         }
 
-        x25_transmit_link(skb, x25->neighbour); 
+        x25_transmit_link(skb, x25->neighbour);
 }
 
 void x25_kick(struct sock *sk)
diff --git a/net/x25/x25_proc.c b/net/x25/x25_proc.c
index a11837d361d2..96001f0c64fc 100644
--- a/net/x25/x25_proc.c
+++ b/net/x25/x25_proc.c
@@ -3,7 +3,7 @@
  *
  *      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 2.4 with seq_file support
  *
@@ -62,7 +62,7 @@ static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
         rt = v;
         if (rt->node.next != &x25_route_list)
                 rt = list_entry(rt->node.next, struct x25_route, node);
-        else 
+        else
                 rt = NULL;
 out:
         return rt;
@@ -88,7 +88,7 @@ static int x25_seq_route_show(struct seq_file *seq, void *v)
                    rt->dev ? rt->dev->name : "???");
 out:
         return 0;
-} 
+}
 
 static __inline__ struct sock *x25_get_socket_idx(loff_t pos)
 {
@@ -163,7 +163,76 @@ static int x25_seq_socket_show(struct seq_file *seq, void *v)
                    s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
 out:
         return 0;
-} 
+}
+
+static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
+{
+        struct x25_forward *f;
+        struct list_head *entry;
+
+        list_for_each(entry, &x25_forward_list) {
+                f = list_entry(entry, struct x25_forward, node);
+                if (!pos--)
+                        goto found;
+        }
+
+        f = NULL;
+found:
+        return f;
+}
+
+static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
+{
+        loff_t l = *pos;
+
+        read_lock_bh(&x25_forward_list_lock);
+        return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        struct x25_forward *f;
+
+        ++*pos;
+        if (v == SEQ_START_TOKEN) {
+                f = NULL;
+                if (!list_empty(&x25_forward_list))
+                        f = list_entry(x25_forward_list.next,
+                                        struct x25_forward, node);
+                goto out;
+        }
+        f = v;
+        if (f->node.next != &x25_forward_list)
+                f = list_entry(f->node.next, struct x25_forward, node);
+        else
+                f = NULL;
+out:
+        return f;
+
+}
+
+static void x25_seq_forward_stop(struct seq_file *seq, void *v)
+{
+        read_unlock_bh(&x25_forward_list_lock);
+}
+
+static int x25_seq_forward_show(struct seq_file *seq, void *v)
+{
+        struct x25_forward *f;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_printf(seq, "lci dev1       dev2\n");
+                goto out;
+        }
+
+        f = v;
+
+        seq_printf(seq, "%d %-10s %-10s\n",
+                        f->lci, f->dev1->name, f->dev2->name);
+
+out:
+        return 0;
+}
 
 static struct seq_operations x25_seq_route_ops = {
         .start  = x25_seq_route_start,
@@ -179,6 +248,13 @@ static struct seq_operations x25_seq_socket_ops = {
         .show   = x25_seq_socket_show,
 };
 
+static struct seq_operations x25_seq_forward_ops = {
+        .start  = x25_seq_forward_start,
+        .next   = x25_seq_forward_next,
+        .stop   = x25_seq_forward_stop,
+        .show   = x25_seq_forward_show,
+};
+
 static int x25_seq_socket_open(struct inode *inode, struct file *file)
 {
         return seq_open(file, &x25_seq_socket_ops);
@@ -189,7 +265,12 @@ static int x25_seq_route_open(struct inode *inode, struct file *file)
         return seq_open(file, &x25_seq_route_ops);
 }
 
-static struct file_operations x25_seq_socket_fops = {
+static int x25_seq_forward_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &x25_seq_forward_ops);
+}
+
+static const struct file_operations x25_seq_socket_fops = {
         .owner          = THIS_MODULE,
         .open           = x25_seq_socket_open,
         .read           = seq_read,
@@ -197,7 +278,7 @@ static struct file_operations x25_seq_socket_fops = {
         .release        = seq_release,
 };
 
-static struct file_operations x25_seq_route_fops = {
+static const struct file_operations x25_seq_route_fops = {
         .owner          = THIS_MODULE,
         .open           = x25_seq_route_open,
         .read           = seq_read,
@@ -205,6 +286,14 @@ static struct file_operations x25_seq_route_fops = {
         .release        = seq_release,
 };
 
+static struct file_operations x25_seq_forward_fops = {
+        .owner          = THIS_MODULE,
+        .open           = x25_seq_forward_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
 static struct proc_dir_entry *x25_proc_dir;
 
 int __init x25_proc_init(void)
@@ -225,9 +314,17 @@ int __init x25_proc_init(void)
         if (!p)
                 goto out_socket;
         p->proc_fops = &x25_seq_socket_fops;
+
+        p = create_proc_entry("forward", S_IRUGO, x25_proc_dir);
+        if (!p)
+                goto out_forward;
+        p->proc_fops = &x25_seq_forward_fops;
         rc = 0;
+
 out:
         return rc;
+out_forward:
+        remove_proc_entry("socket", x25_proc_dir);
 out_socket:
         remove_proc_entry("route", x25_proc_dir);
 out_route:
@@ -237,6 +334,7 @@ out_route:
 
 void __exit x25_proc_exit(void)
 {
+        remove_proc_entry("forward", x25_proc_dir);
         remove_proc_entry("route", x25_proc_dir);
         remove_proc_entry("socket", x25_proc_dir);
         remove_proc_entry("x25", proc_net);
diff --git a/net/x25/x25_route.c b/net/x25/x25_route.c
index 2a3fe986b245..060fcfaa2f47 100644
--- a/net/x25/x25_route.c
+++ b/net/x25/x25_route.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -119,6 +119,9 @@ void x25_route_device_down(struct net_device *dev)
                         __x25_remove_route(rt);
         }
         write_unlock_bh(&x25_route_list_lock);
+
+        /* Remove any related forwarding */
+        x25_clear_forward_by_dev(dev);
 }
 
 /*
diff --git a/net/x25/x25_timer.c b/net/x25/x25_timer.c
index 71ff3088f6fe..2af190dc5b01 100644
--- a/net/x25/x25_timer.c
+++ b/net/x25/x25_timer.c
@@ -3,7 +3,7 @@
  *
  *      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
  *
@@ -99,8 +99,8 @@ static void x25_heartbeat_expiry(unsigned long param)
 {
         struct sock *sk = (struct sock *)param;
 
-        bh_lock_sock(sk);
-        if (sock_owned_by_user(sk)) /* can currently only occur in state 3 */ 
+        bh_lock_sock(sk);
+        if (sock_owned_by_user(sk)) /* can currently only occur in state 3 */
                 goto restart_heartbeat;
 
         switch (x25_sk(sk)->state) {