basic modification from way back
[powerpc.git] / net / netrom / af_netrom.c
index 1d50f80..5d4a26c 100644 (file)
@@ -110,7 +110,7 @@ static int nr_device_event(struct notifier_block *this, unsigned long event, voi
 
        nr_kill_by_device(dev);
        nr_rt_device_down(dev);
-       
+
        return NOTIFY_DONE;
 }
 
@@ -137,7 +137,7 @@ static struct sock *nr_find_listener(ax25_address *addr)
        sk_for_each(s, node, &nr_list)
                if (!ax25cmp(&nr_sk(s)->source_addr, addr) &&
                    s->sk_state == TCP_LISTEN) {
-                       bh_lock_sock(s);
+                       bh_lock_sock(s);
                        goto found;
                }
        s = NULL;
@@ -157,7 +157,7 @@ static struct sock *nr_find_socket(unsigned char index, unsigned char id)
        spin_lock_bh(&nr_list_lock);
        sk_for_each(s, node, &nr_list) {
                struct nr_sock *nr = nr_sk(s);
-               
+
                if (nr->my_index == index && nr->my_id == id) {
                        bh_lock_sock(s);
                        goto found;
@@ -181,10 +181,10 @@ static struct sock *nr_find_peer(unsigned char index, unsigned char id,
        spin_lock_bh(&nr_list_lock);
        sk_for_each(s, node, &nr_list) {
                struct nr_sock *nr = nr_sk(s);
-               
+
                if (nr->your_index == index && nr->your_id == id &&
                    !ax25cmp(&nr->dest_addr, dest)) {
-                       bh_lock_sock(s);
+                       bh_lock_sock(s);
                        goto found;
                }
        }
@@ -341,17 +341,17 @@ static int nr_getsockopt(struct socket *sock, int level, int optname,
        struct sock *sk = sock->sk;
        struct nr_sock *nr = nr_sk(sk);
        int val = 0;
-       int len; 
+       int len;
 
        if (level != SOL_NETROM)
                return -ENOPROTOOPT;
-       
+
        if (get_user(len, optlen))
                return -EFAULT;
 
        if (len < 0)
                return -EINVAL;
-               
+
        switch (optname) {
        case NETROM_T1:
                val = nr->t1 / HZ;
@@ -537,7 +537,7 @@ static int nr_release(struct socket *sock)
                break;
        }
 
-       sock->sk   = NULL;      
+       sock->sk   = NULL;
        release_sock(sk);
        sock_put(sk);
 
@@ -625,42 +625,42 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
        ax25_address *source = NULL;
        ax25_uid_assoc *user;
        struct net_device *dev;
+       int err = 0;
 
        lock_sock(sk);
        if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
                sock->state = SS_CONNECTED;
-               release_sock(sk);
-               return 0;       /* Connect completed during a ERESTARTSYS event */
+               goto out_release;       /* Connect completed during a ERESTARTSYS event */
        }
 
        if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
                sock->state = SS_UNCONNECTED;
-               release_sock(sk);
-               return -ECONNREFUSED;
+               err = -ECONNREFUSED;
+               goto out_release;
        }
 
        if (sk->sk_state == TCP_ESTABLISHED) {
-               release_sock(sk);
-               return -EISCONN;        /* No reconnect on a seqpacket socket */
+               err = -EISCONN; /* No reconnect on a seqpacket socket */
+               goto out_release;
        }
 
-       sk->sk_state   = TCP_CLOSE;     
+       sk->sk_state   = TCP_CLOSE;
        sock->state = SS_UNCONNECTED;
 
        if (addr_len != sizeof(struct sockaddr_ax25) && addr_len != sizeof(struct full_sockaddr_ax25)) {
-               release_sock(sk);
-               return -EINVAL;
+               err = -EINVAL;
+               goto out_release;
        }
        if (addr->sax25_family != AF_NETROM) {
-               release_sock(sk);
-               return -EINVAL;
+               err = -EINVAL;
+               goto out_release;
        }
        if (sock_flag(sk, SOCK_ZAPPED)) {       /* Must bind first - autobinding in this may or may not work */
                sock_reset_flag(sk, SOCK_ZAPPED);
 
                if ((dev = nr_dev_first()) == NULL) {
-                       release_sock(sk);
-                       return -ENETUNREACH;
+                       err = -ENETUNREACH;
+                       goto out_release;
                }
                source = (ax25_address *)dev->dev_addr;
 
@@ -671,8 +671,8 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
                } else {
                        if (ax25_uid_policy && !capable(CAP_NET_ADMIN)) {
                                dev_put(dev);
-                               release_sock(sk);
-                               return -EPERM;
+                               err = -EPERM;
+                               goto out_release;
                        }
                        nr->user_addr   = *source;
                }
@@ -707,55 +707,55 @@ static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
 
        /* Now the loop */
        if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
-               release_sock(sk);
-               return -EINPROGRESS;
+               err = -EINPROGRESS;
+               goto out_release;
        }
-               
+
        /*
         * A Connect Ack with Choke or timeout or failed routing will go to
         * closed.
         */
        if (sk->sk_state == TCP_SYN_SENT) {
-               struct task_struct *tsk = current;
-               DECLARE_WAITQUEUE(wait, tsk);
+               DEFINE_WAIT(wait);
 
-               add_wait_queue(sk->sk_sleep, &wait);
                for (;;) {
-                       set_current_state(TASK_INTERRUPTIBLE);
+                       prepare_to_wait(sk->sk_sleep, &wait,
+                                       TASK_INTERRUPTIBLE);
                        if (sk->sk_state != TCP_SYN_SENT)
                                break;
-                       release_sock(sk);
-                       if (!signal_pending(tsk)) {
+                       if (!signal_pending(current)) {
+                               release_sock(sk);
                                schedule();
                                lock_sock(sk);
                                continue;
                        }
-                       current->state = TASK_RUNNING;
-                       remove_wait_queue(sk->sk_sleep, &wait);
-                       return -ERESTARTSYS;
+                       err = -ERESTARTSYS;
+                       break;
                }
-               current->state = TASK_RUNNING;
-               remove_wait_queue(sk->sk_sleep, &wait);
+               finish_wait(sk->sk_sleep, &wait);
+               if (err)
+                       goto out_release;
        }
 
        if (sk->sk_state != TCP_ESTABLISHED) {
                sock->state = SS_UNCONNECTED;
-               release_sock(sk);
-               return sock_error(sk);  /* Always set at this point */
+               err = sock_error(sk);   /* Always set at this point */
+               goto out_release;
        }
 
        sock->state = SS_CONNECTED;
+
+out_release:
        release_sock(sk);
 
-       return 0;
+       return err;
 }
 
 static int nr_accept(struct socket *sock, struct socket *newsock, int flags)
 {
-       struct task_struct *tsk = current;
-       DECLARE_WAITQUEUE(wait, tsk);
        struct sk_buff *skb;
        struct sock *newsk;
+       DEFINE_WAIT(wait);
        struct sock *sk;
        int err = 0;
 
@@ -765,42 +765,40 @@ static int nr_accept(struct socket *sock, struct socket *newsock, int flags)
        lock_sock(sk);
        if (sk->sk_type != SOCK_SEQPACKET) {
                err = -EOPNOTSUPP;
-               goto out;
+               goto out_release;
        }
 
        if (sk->sk_state != TCP_LISTEN) {
                err = -EINVAL;
-               goto out;
+               goto out_release;
        }
 
        /*
         *      The write queue this time is holding sockets ready to use
         *      hooked into the SABM we saved
         */
-       add_wait_queue(sk->sk_sleep, &wait);
        for (;;) {
+               prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
                skb = skb_dequeue(&sk->sk_receive_queue);
                if (skb)
                        break;
 
-               current->state = TASK_INTERRUPTIBLE;
-               release_sock(sk);
                if (flags & O_NONBLOCK) {
-                       current->state = TASK_RUNNING;
-                       remove_wait_queue(sk->sk_sleep, &wait);
-                       return -EWOULDBLOCK;
+                       err = -EWOULDBLOCK;
+                       break;
                }
-               if (!signal_pending(tsk)) {
+               if (!signal_pending(current)) {
+                       release_sock(sk);
                        schedule();
                        lock_sock(sk);
                        continue;
                }
-               current->state = TASK_RUNNING;
-               remove_wait_queue(sk->sk_sleep, &wait);
-               return -ERESTARTSYS;
+               err = -ERESTARTSYS;
+               break;
        }
-       current->state = TASK_RUNNING;
-       remove_wait_queue(sk->sk_sleep, &wait);
+       finish_wait(sk->sk_sleep, &wait);
+       if (err)
+               goto out_release;
 
        newsk = skb->sk;
        newsk->sk_socket = newsock;
@@ -811,8 +809,9 @@ static int nr_accept(struct socket *sock, struct socket *newsock, int flags)
        sk_acceptq_removed(sk);
        newsock->sk = newsk;
 
-out:
+out_release:
        release_sock(sk);
+
        return err;
 }
 
@@ -848,7 +847,7 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
 int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
 {
        struct sock *sk;
-       struct sock *make;      
+       struct sock *make;
        struct nr_sock *nr_make;
        ax25_address *src, *dest, *user;
        unsigned short circuit_index, circuit_id;
@@ -878,7 +877,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
        if (frametype == NR_PROTOEXT &&
            circuit_index == NR_PROTO_IP && circuit_id == NR_PROTO_IP) {
                skb_pull(skb, NR_NETWORK_LEN + NR_TRANSPORT_LEN);
-               skb->h.raw = skb->data;
+               skb_reset_transport_header(skb);
 
                return nr_rx_ip(skb, dev);
        }
@@ -904,7 +903,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
        }
 
        if (sk != NULL) {
-               skb->h.raw = skb->data;
+               skb_reset_transport_header(skb);
 
                if (frametype == NR_CONNACK && skb->len == 22)
                        nr_sk(sk)->bpqext = 1;
@@ -1074,6 +1073,7 @@ static int nr_sendmsg(struct kiocb *iocb, struct socket *sock,
                goto out;
 
        skb_reserve(skb, size - len);
+       skb_reset_transport_header(skb);
 
        /*
         *      Push down the NET/ROM header
@@ -1094,14 +1094,12 @@ static int nr_sendmsg(struct kiocb *iocb, struct socket *sock,
        /*
         *      Put the data on the end
         */
+       skb_put(skb, len);
 
-       skb->h.raw = skb_put(skb, len);
-
-       asmptr = skb->h.raw;
        SOCK_DEBUG(sk, "NET/ROM: Appending user data\n");
 
        /* User data follows immediately after the NET/ROM transport header */
-       if (memcpy_fromiovec(asmptr, msg->msg_iov, len)) {
+       if (memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len)) {
                kfree_skb(skb);
                err = -EFAULT;
                goto out;
@@ -1149,7 +1147,7 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
                return er;
        }
 
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        copied     = skb->len;
 
        if (copied > size) {
@@ -1161,7 +1159,8 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
 
        if (sax != NULL) {
                sax->sax25_family = AF_NETROM;
-               memcpy(sax->sax25_call.ax25_call, skb->data + 7, AX25_ADDR_LEN);
+               skb_copy_from_linear_data_offset(skb, 7, sax->sax25_call.ax25_call,
+                             AX25_ADDR_LEN);
        }
 
        msg->msg_namelen = sizeof(*sax);
@@ -1209,6 +1208,12 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                release_sock(sk);
                return ret;
 
+       case SIOCGSTAMPNS:
+               lock_sock(sk);
+               ret = sock_get_timestampns(sk, argp);
+               release_sock(sk);
+               return ret;
+
        case SIOCGIFADDR:
        case SIOCSIFADDR:
        case SIOCGIFDSTADDR:
@@ -1258,10 +1263,10 @@ static void *nr_info_next(struct seq_file *seq, void *v, loff_t *pos)
 {
        ++*pos;
 
-       return (v == SEQ_START_TOKEN) ? sk_head(&nr_list) 
+       return (v == SEQ_START_TOKEN) ? sk_head(&nr_list)
                : sk_next((struct sock *)v);
 }
-       
+
 static void nr_info_stop(struct seq_file *seq, void *v)
 {
        spin_unlock_bh(&nr_list_lock);
@@ -1291,7 +1296,7 @@ static int nr_info_show(struct seq_file *seq, void *v)
 
                seq_printf(seq, "%-9s ", ax2asc(buf, &nr->user_addr));
                seq_printf(seq, "%-9s ", ax2asc(buf, &nr->dest_addr));
-               seq_printf(seq, 
+               seq_printf(seq,
 "%-9s %-3s  %02X/%02X %02X/%02X %2d %3d %3d %3d %3lu/%03lu %2lu/%02lu %3lu/%03lu %3lu/%03lu %2d/%02d %3d %5d %5d %ld\n",
                        ax2asc(buf, &nr->source_addr),
                        devname,
@@ -1329,13 +1334,13 @@ static struct seq_operations nr_info_seqops = {
        .stop = nr_info_stop,
        .show = nr_info_show,
 };
+
 static int nr_info_open(struct inode *inode, struct file *file)
 {
        return seq_open(file, &nr_info_seqops);
 }
-static struct file_operations nr_info_fops = {
+
+static const struct file_operations nr_info_fops = {
        .owner = THIS_MODULE,
        .open = nr_info_open,
        .read = seq_read,
@@ -1377,6 +1382,15 @@ static struct notifier_block nr_dev_notifier = {
 
 static struct net_device **dev_nr;
 
+static struct ax25_protocol nr_pid = {
+       .pid    = AX25_P_NETROM,
+       .func   = nr_route_frame
+};
+
+static struct ax25_linkfail nr_linkfail_notifier = {
+       .func   = nr_link_failed,
+};
+
 static int __init nr_proto_init(void)
 {
        int i;
@@ -1406,7 +1420,7 @@ static int __init nr_proto_init(void)
                        printk(KERN_ERR "NET/ROM: nr_proto_init - unable to allocate device structure\n");
                        goto fail;
                }
-               
+
                dev->base_addr = i;
                if (register_netdev(dev)) {
                        printk(KERN_ERR "NET/ROM: nr_proto_init - unable to register network device\n");
@@ -1421,11 +1435,11 @@ static int __init nr_proto_init(void)
                printk(KERN_ERR "NET/ROM: nr_proto_init - unable to register socket family\n");
                goto fail;
        }
-               
+
        register_netdevice_notifier(&nr_dev_notifier);
 
-       ax25_protocol_register(AX25_P_NETROM, nr_route_frame);
-       ax25_linkfail_register(nr_link_failed);
+       ax25_register_pid(&nr_pid);
+       ax25_linkfail_register(&nr_linkfail_notifier);
 
 #ifdef CONFIG_SYSCTL
        nr_register_sysctl();
@@ -1474,7 +1488,7 @@ static void __exit nr_exit(void)
        nr_unregister_sysctl();
 #endif
 
-       ax25_linkfail_release(nr_link_failed);
+       ax25_linkfail_release(&nr_linkfail_notifier);
        ax25_protocol_release(AX25_P_NETROM);
 
        unregister_netdevice_notifier(&nr_dev_notifier);