From 83569b351c4f9868b043e7c48e90d5ba56da9838 Mon Sep 17 00:00:00 2001
From: Brian Somers <brian@FreeBSD.org>
Date: Fri, 19 Nov 1999 23:21:13 +0000
Subject: [PATCH] Update the time delta of the first item in TimerList before
 inserting a new item.  Without this, it's possible to mis-insert quite
 badly... but only by as much as the load of the first item, which is almost
 always 1 second.

Initialise the timerservice with `restart' set if we're inserting
at the start of the list.
---
 usr.sbin/ppp/timer.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/ppp/timer.c b/usr.sbin/ppp/timer.c
index a0f039d8707..7a7d592fdfa 100644
--- a/usr.sbin/ppp/timer.c
+++ b/usr.sbin/ppp/timer.c
@@ -62,6 +62,7 @@ timer_Stop(struct pppTimer *tp)
 void
 timer_Start(struct pppTimer *tp)
 {
+  struct itimerval itimer;
   struct pppTimer *t, *pt;
   u_long ticks = 0;
   int omask;
@@ -76,6 +77,12 @@ timer_Start(struct pppTimer *tp)
     sigsetmask(omask);
     return;
   }
+
+  /* Adjust our first delta so that it reflects what's really happening */
+  if (TimerList && getitimer(ITIMER_REAL, &itimer) == 0)
+    TimerList->rest = itimer.it_value.tv_sec * SECTICKS +
+                      itimer.it_value.tv_usec / TICKUNIT;
+
   pt = NULL;
   for (t = TimerList; t; t = t->next) {
     if (ticks + t->rest >= tp->load)
@@ -99,7 +106,7 @@ timer_Start(struct pppTimer *tp)
     pt->next = tp;
   } else {
     TimerList = tp;
-    timer_InitService(0);	/* Start the Timer Service */
+    timer_InitService(t != NULL);	/* [re]Start the Timer Service */
   }
   if (t)
     t->rest -= tp->rest;
-- 
2.45.2