Merge commit 'gcl/gcl-next'

[linux-2.6] / net / dccp / timer.c

diff --git a/net/dccp/timer.c b/net/dccp/timer.c
index e5348f369c60a09055e4f7b464d9e3520eb95f35..6a5b961b6f5c08fdec108f72e66a2352c0199c78 100644 (file)
--- a/net/dccp/timer.c
+++ b/net/dccp/timer.c
@@ -60,7 +60,7 @@ static int dccp_write_timeout(struct sock *sk)
    be far nicer to have all of the black holes fixed rather than fixing
    all of the TCP implementations."
 
-                           Golden words :-).
+                          Golden words :-).
                   */
 
                        dst_negative_advice(&sk->sk_dst_cache);
@@ -106,7 +106,7 @@ static void dccp_retransmit_timer(struct sock *sk)
         *      -- Acks     in client-PARTOPEN state (sec. 8.1.5)
         *      -- CloseReq in server-CLOSEREQ state (sec. 8.3)
         *      -- Close    in   node-CLOSING  state (sec. 8.3)                */
-       BUG_TRAP(sk->sk_send_head != NULL);
+       WARN_ON(sk->sk_send_head == NULL);
 
        /*
         * More than than 4MSL (8 minutes) has passed, a RESET(aborted) was
@@ -224,7 +224,7 @@ static void dccp_delack_timer(unsigned long data)
        if (sock_owned_by_user(sk)) {
                /* Try again later. */
                icsk->icsk_ack.blocked = 1;
-               NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKLOCKED);
+               NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED);
                sk_reset_timer(sk, &icsk->icsk_delack_timer,
                               jiffies + TCP_DELACK_MIN);
                goto out;
@@ -254,15 +254,60 @@ static void dccp_delack_timer(unsigned long data)
                        icsk->icsk_ack.ato = TCP_ATO_MIN;
                }
                dccp_send_ack(sk);
-               NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKS);
+               NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_DELAYEDACKS);
        }
 out:
        bh_unlock_sock(sk);
        sock_put(sk);
 }
 
+/* Transmit-delay timer: used by the CCIDs to delay actual send time */
+static void dccp_write_xmit_timer(unsigned long data)
+{
+       struct sock *sk = (struct sock *)data;
+       struct dccp_sock *dp = dccp_sk(sk);
+
+       bh_lock_sock(sk);
+       if (sock_owned_by_user(sk))
+               sk_reset_timer(sk, &dp->dccps_xmit_timer, jiffies+1);
+       else
+               dccp_write_xmit(sk, 0);
+       bh_unlock_sock(sk);
+       sock_put(sk);
+}
+
+static void dccp_init_write_xmit_timer(struct sock *sk)
+{
+       struct dccp_sock *dp = dccp_sk(sk);
+
+       setup_timer(&dp->dccps_xmit_timer, dccp_write_xmit_timer,
+                       (unsigned long)sk);
+}
+
 void dccp_init_xmit_timers(struct sock *sk)
 {
+       dccp_init_write_xmit_timer(sk);
        inet_csk_init_xmit_timers(sk, &dccp_write_timer, &dccp_delack_timer,
                                  &dccp_keepalive_timer);
 }
+
+static ktime_t dccp_timestamp_seed;
+/**
+ * dccp_timestamp  -  10s of microseconds time source
+ * Returns the number of 10s of microseconds since loading DCCP. This is native
+ * DCCP time difference format (RFC 4340, sec. 13).
+ * Please note: This will wrap around about circa every 11.9 hours.
+ */
+u32 dccp_timestamp(void)
+{
+       s64 delta = ktime_us_delta(ktime_get_real(), dccp_timestamp_seed);
+
+       do_div(delta, 10);
+       return delta;
+}
+EXPORT_SYMBOL_GPL(dccp_timestamp);
+
+void __init dccp_timestamping_init(void)
+{
+       dccp_timestamp_seed = ktime_get_real();
+}