Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/netrom/nr_timer.c b/net/netrom/nr_timer.c
new file mode 100644
index 0000000..faabda8
--- /dev/null
+++ b/net/netrom/nr_timer.c
@@ -0,0 +1,260 @@
+/*
+ * This program 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.
+ *
+ * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
+ * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
+ */
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/sockios.h>
+#include <linux/net.h>
+#include <net/ax25.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <net/sock.h>
+#include <net/tcp.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <net/netrom.h>
+
+static void nr_heartbeat_expiry(unsigned long);
+static void nr_t1timer_expiry(unsigned long);
+static void nr_t2timer_expiry(unsigned long);
+static void nr_t4timer_expiry(unsigned long);
+static void nr_idletimer_expiry(unsigned long);
+
+void nr_init_timers(struct sock *sk)
+{
+ struct nr_sock *nr = nr_sk(sk);
+
+ init_timer(&nr->t1timer);
+ nr->t1timer.data = (unsigned long)sk;
+ nr->t1timer.function = &nr_t1timer_expiry;
+
+ init_timer(&nr->t2timer);
+ nr->t2timer.data = (unsigned long)sk;
+ nr->t2timer.function = &nr_t2timer_expiry;
+
+ init_timer(&nr->t4timer);
+ nr->t4timer.data = (unsigned long)sk;
+ nr->t4timer.function = &nr_t4timer_expiry;
+
+ init_timer(&nr->idletimer);
+ nr->idletimer.data = (unsigned long)sk;
+ nr->idletimer.function = &nr_idletimer_expiry;
+
+ /* initialized by sock_init_data */
+ sk->sk_timer.data = (unsigned long)sk;
+ sk->sk_timer.function = &nr_heartbeat_expiry;
+}
+
+void nr_start_t1timer(struct sock *sk)
+{
+ struct nr_sock *nr = nr_sk(sk);
+
+ mod_timer(&nr->t1timer, jiffies + nr->t1);
+}
+
+void nr_start_t2timer(struct sock *sk)
+{
+ struct nr_sock *nr = nr_sk(sk);
+
+ mod_timer(&nr->t2timer, jiffies + nr->t2);
+}
+
+void nr_start_t4timer(struct sock *sk)
+{
+ struct nr_sock *nr = nr_sk(sk);
+
+ mod_timer(&nr->t4timer, jiffies + nr->t4);
+}
+
+void nr_start_idletimer(struct sock *sk)
+{
+ struct nr_sock *nr = nr_sk(sk);
+
+ if (nr->idle > 0)
+ mod_timer(&nr->idletimer, jiffies + nr->idle);
+}
+
+void nr_start_heartbeat(struct sock *sk)
+{
+ mod_timer(&sk->sk_timer, jiffies + 5 * HZ);
+}
+
+void nr_stop_t1timer(struct sock *sk)
+{
+ del_timer(&nr_sk(sk)->t1timer);
+}
+
+void nr_stop_t2timer(struct sock *sk)
+{
+ del_timer(&nr_sk(sk)->t2timer);
+}
+
+void nr_stop_t4timer(struct sock *sk)
+{
+ del_timer(&nr_sk(sk)->t4timer);
+}
+
+void nr_stop_idletimer(struct sock *sk)
+{
+ del_timer(&nr_sk(sk)->idletimer);
+}
+
+void nr_stop_heartbeat(struct sock *sk)
+{
+ del_timer(&sk->sk_timer);
+}
+
+int nr_t1timer_running(struct sock *sk)
+{
+ return timer_pending(&nr_sk(sk)->t1timer);
+}
+
+static void nr_heartbeat_expiry(unsigned long param)
+{
+ struct sock *sk = (struct sock *)param;
+ struct nr_sock *nr = nr_sk(sk);
+
+ bh_lock_sock(sk);
+ switch (nr->state) {
+ case NR_STATE_0:
+ /* Magic here: If we listen() and a new link dies before it
+ is accepted() it isn't 'dead' so doesn't get removed. */
+ if (sock_flag(sk, SOCK_DESTROY) ||
+ (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) {
+ sock_hold(sk);
+ nr_destroy_socket(sk);
+ bh_unlock_sock(sk);
+ sock_put(sk);
+ return;
+ }
+ break;
+
+ case NR_STATE_3:
+ /*
+ * Check for the state of the receive buffer.
+ */
+ if (atomic_read(&sk->sk_rmem_alloc) < (sk->sk_rcvbuf / 2) &&
+ (nr->condition & NR_COND_OWN_RX_BUSY)) {
+ nr->condition &= ~NR_COND_OWN_RX_BUSY;
+ nr->condition &= ~NR_COND_ACK_PENDING;
+ nr->vl = nr->vr;
+ nr_write_internal(sk, NR_INFOACK);
+ break;
+ }
+ break;
+ }
+
+ nr_start_heartbeat(sk);
+ bh_unlock_sock(sk);
+}
+
+static void nr_t2timer_expiry(unsigned long param)
+{
+ struct sock *sk = (struct sock *)param;
+ struct nr_sock *nr = nr_sk(sk);
+
+ bh_lock_sock(sk);
+ if (nr->condition & NR_COND_ACK_PENDING) {
+ nr->condition &= ~NR_COND_ACK_PENDING;
+ nr_enquiry_response(sk);
+ }
+ bh_unlock_sock(sk);
+}
+
+static void nr_t4timer_expiry(unsigned long param)
+{
+ struct sock *sk = (struct sock *)param;
+
+ bh_lock_sock(sk);
+ nr_sk(sk)->condition &= ~NR_COND_PEER_RX_BUSY;
+ bh_unlock_sock(sk);
+}
+
+static void nr_idletimer_expiry(unsigned long param)
+{
+ struct sock *sk = (struct sock *)param;
+ struct nr_sock *nr = nr_sk(sk);
+
+ bh_lock_sock(sk);
+
+ nr_clear_queues(sk);
+
+ nr->n2count = 0;
+ nr_write_internal(sk, NR_DISCREQ);
+ nr->state = NR_STATE_2;
+
+ nr_start_t1timer(sk);
+ nr_stop_t2timer(sk);
+ nr_stop_t4timer(sk);
+
+ sk->sk_state = TCP_CLOSE;
+ sk->sk_err = 0;
+ sk->sk_shutdown |= SEND_SHUTDOWN;
+
+ if (!sock_flag(sk, SOCK_DEAD)) {
+ sk->sk_state_change(sk);
+ sock_set_flag(sk, SOCK_DEAD);
+ }
+ bh_unlock_sock(sk);
+}
+
+static void nr_t1timer_expiry(unsigned long param)
+{
+ struct sock *sk = (struct sock *)param;
+ struct nr_sock *nr = nr_sk(sk);
+
+ bh_lock_sock(sk);
+ switch (nr->state) {
+ case NR_STATE_1:
+ if (nr->n2count == nr->n2) {
+ nr_disconnect(sk, ETIMEDOUT);
+ bh_unlock_sock(sk);
+ return;
+ } else {
+ nr->n2count++;
+ nr_write_internal(sk, NR_CONNREQ);
+ }
+ break;
+
+ case NR_STATE_2:
+ if (nr->n2count == nr->n2) {
+ nr_disconnect(sk, ETIMEDOUT);
+ bh_unlock_sock(sk);
+ return;
+ } else {
+ nr->n2count++;
+ nr_write_internal(sk, NR_DISCREQ);
+ }
+ break;
+
+ case NR_STATE_3:
+ if (nr->n2count == nr->n2) {
+ nr_disconnect(sk, ETIMEDOUT);
+ bh_unlock_sock(sk);
+ return;
+ } else {
+ nr->n2count++;
+ nr_requeue_frames(sk);
+ }
+ break;
+ }
+
+ nr_start_t1timer(sk);
+ bh_unlock_sock(sk);
+}