Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[sfrench/cifs-2.6.git] / net / ax25 / af_ax25.c
index 1c07c6a50eb82eff90cfa88a209a979ce63307e8..6ded95272a537636b0673b5ba040620d287e6049 100644 (file)
@@ -1127,22 +1127,22 @@ static int __must_check ax25_connect(struct socket *sock,
                switch (sk->sk_state) {
                case TCP_SYN_SENT: /* still trying */
                        err = -EINPROGRESS;
-                       goto out;
+                       goto out_release;
 
                case TCP_ESTABLISHED: /* connection established */
                        sock->state = SS_CONNECTED;
-                       goto out;
+                       goto out_release;
 
                case TCP_CLOSE: /* connection refused */
                        sock->state = SS_UNCONNECTED;
                        err = -ECONNREFUSED;
-                       goto out;
+                       goto out_release;
                }
        }
 
        if (sk->sk_state == TCP_ESTABLISHED && sk->sk_type == SOCK_SEQPACKET) {
                err = -EISCONN; /* No reconnect on a seqpacket socket */
-               goto out;
+               goto out_release;
        }
 
        sk->sk_state   = TCP_CLOSE;
@@ -1159,12 +1159,12 @@ static int __must_check ax25_connect(struct socket *sock,
                /* Valid number of digipeaters ? */
                if (fsa->fsa_ax25.sax25_ndigis < 1 || fsa->fsa_ax25.sax25_ndigis > AX25_MAX_DIGIS) {
                        err = -EINVAL;
-                       goto out;
+                       goto out_release;
                }
 
                if ((digi = kmalloc(sizeof(ax25_digi), GFP_KERNEL)) == NULL) {
                        err = -ENOBUFS;
-                       goto out;
+                       goto out_release;
                }
 
                digi->ndigi      = fsa->fsa_ax25.sax25_ndigis;
@@ -1194,7 +1194,7 @@ static int __must_check ax25_connect(struct socket *sock,
                        current->comm);
                if ((err = ax25_rt_autobind(ax25, &fsa->fsa_ax25.sax25_call)) < 0) {
                        kfree(digi);
-                       goto out;
+                       goto out_release;
                }
 
                ax25_fillin_cb(ax25, ax25->ax25_dev);
@@ -1203,7 +1203,7 @@ static int __must_check ax25_connect(struct socket *sock,
                if (ax25->ax25_dev == NULL) {
                        kfree(digi);
                        err = -EHOSTUNREACH;
-                       goto out;
+                       goto out_release;
                }
        }
 
@@ -1213,7 +1213,7 @@ static int __must_check ax25_connect(struct socket *sock,
                kfree(digi);
                err = -EADDRINUSE;              /* Already such a connection */
                ax25_cb_put(ax25t);
-               goto out;
+               goto out_release;
        }
 
        ax25->dest_addr = fsa->fsa_ax25.sax25_call;
@@ -1223,7 +1223,7 @@ static int __must_check ax25_connect(struct socket *sock,
        if (sk->sk_type != SOCK_SEQPACKET) {
                sock->state = SS_CONNECTED;
                sk->sk_state   = TCP_ESTABLISHED;
-               goto out;
+               goto out_release;
        }
 
        /* Move to connecting socket, ax.25 lapb WAIT_UA.. */
@@ -1255,55 +1255,53 @@ static int __must_check ax25_connect(struct socket *sock,
        /* Now the loop */
        if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) {
                err = -EINPROGRESS;
-               goto out;
+               goto out_release;
        }
 
        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 (;;) {
+                       prepare_to_wait(sk->sk_sleep, &wait,
+                                       TASK_INTERRUPTIBLE);
                        if (sk->sk_state != TCP_SYN_SENT)
                                break;
-                       set_current_state(TASK_INTERRUPTIBLE);
-                       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) {
                /* Not in ABM, not in WAIT_UA -> failed */
                sock->state = SS_UNCONNECTED;
                err = sock_error(sk);   /* Always set at this point */
-               goto out;
+               goto out_release;
        }
 
        sock->state = SS_CONNECTED;
 
-       err=0;
-out:
+       err = 0;
+out_release:
        release_sock(sk);
 
        return err;
 }
 
-
 static int ax25_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;
 
@@ -1328,30 +1326,29 @@ static int ax25_accept(struct socket *sock, struct socket *newsock, int flags)
         *      The read 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;
 
-               release_sock(sk);
-               current->state = TASK_INTERRUPTIBLE;
                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;
 
        newsk            = skb->sk;
        newsk->sk_socket = newsock;
@@ -1425,7 +1422,6 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
        struct sockaddr_ax25 sax;
        struct sk_buff *skb;
        ax25_digi dtmp, *dp;
-       unsigned char *asmptr;
        ax25_cb *ax25;
        size_t size;
        int lv, err, addr_len = msg->msg_namelen;
@@ -1548,13 +1544,11 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
                goto out;
        }
 
-       skb->nh.raw = skb->data;
+       skb_reset_network_header(skb);
 
        /* Add the PID if one is not supplied by the user in the skb */
-       if (!ax25->pidincl) {
-               asmptr  = skb_push(skb, 1);
-               *asmptr = sk->sk_protocol;
-       }
+       if (!ax25->pidincl)
+               *skb_push(skb, 1) = sk->sk_protocol;
 
        SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
 
@@ -1573,7 +1567,7 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
                goto out;
        }
 
-       asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
+       skb_push(skb, 1 + ax25_addr_size(dp));
 
        SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
 
@@ -1581,17 +1575,17 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
                SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
 
        /* Build an AX.25 header */
-       asmptr += (lv = ax25_addr_build(asmptr, &ax25->source_addr,
-                                       &sax.sax25_call, dp,
-                                       AX25_COMMAND, AX25_MODULUS));
+       lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
+                            dp, AX25_COMMAND, AX25_MODULUS);
 
        SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
 
-       skb->h.raw = asmptr;
+       skb_set_transport_header(skb, lv);
 
-       SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
+       SOCK_DEBUG(sk, "base=%p pos=%p\n",
+                  skb->data, skb_transport_header(skb));
 
-       *asmptr = AX25_UI;
+       *skb_transport_header(skb) = AX25_UI;
 
        /* Datagram frames go straight out of the door as UI */
        ax25_queue_xmit(skb, ax25->ax25_dev->dev);
@@ -1631,8 +1625,8 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
        if (!ax25_sk(sk)->pidincl)
                skb_pull(skb, 1);               /* Remove PID */
 
-       skb->h.raw = skb->data;
-       copied     = skb->len;
+       skb_reset_transport_header(skb);
+       copied = skb->len;
 
        if (copied > size) {
                copied = size;
@@ -1645,9 +1639,10 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
                struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
                ax25_digi digi;
                ax25_address src;
+               const unsigned char *mac = skb_mac_header(skb);
 
-               ax25_addr_parse(skb->mac.raw+1, skb->data-skb->mac.raw-1, &src, NULL, &digi, NULL, NULL);
-
+               ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL,
+                               &digi, NULL, NULL);
                sax->sax25_family = AF_AX25;
                /* We set this correctly, even though we may not let the
                   application know the digi calls further down (because it
@@ -1711,6 +1706,10 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                res = sock_get_timestamp(sk, argp);
                break;
 
+       case SIOCGSTAMPNS:
+               res = sock_get_timestampns(sk, argp);
+               break;
+
        case SIOCAX25ADDUID:    /* Add a uid to the uid/call map table */
        case SIOCAX25DELUID:    /* Delete a uid from the uid/call map table */
        case SIOCAX25GETUID: {