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diff -Nurp kernel-source-2.6.16.orig/include/linux/pkt_sched.h kernel-source-2.6.16/include/linux/pkt_sched.h
--- kernel-source-2.6.16.orig/include/linux/pkt_sched.h	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/include/linux/pkt_sched.h	2006-06-13 11:42:12.000000000 +1000
@@ -77,8 +77,9 @@ struct tc_ratespec
 {
 	unsigned char	cell_log;
 	unsigned char	__reserved;
-	unsigned short	feature;
-	short		addend;
+	unsigned short	feature;	/* Always 0 in pre-atm patch kernels */
+	char		cell_align;	/* Always 0 in pre-atm patch kernels */
+	unsigned char	__unused;
 	unsigned short	mpu;
 	__u32		rate;
 };
diff -Nurp kernel-source-2.6.16.orig/include/net/sch_generic.h kernel-source-2.6.16/include/net/sch_generic.h
--- kernel-source-2.6.16.orig/include/net/sch_generic.h	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/include/net/sch_generic.h	2006-06-13 11:42:12.000000000 +1000
@@ -307,4 +307,18 @@ drop:
 	return NET_XMIT_DROP;
 }
 
+/* Lookup a qdisc_rate_table to determine how long it will take to send a
+   packet given its size.
+ */
+static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, int pktlen)
+{
+	int slot = pktlen + rtab->rate.cell_align;
+	if (slot < 0)
+	  	slot = 0;
+	slot >>= rtab->rate.cell_log;
+	if (slot > 255)
+		return rtab->data[255] + 1;
+	return rtab->data[slot];
+}
+
 #endif
diff -Nurp kernel-source-2.6.16.orig/net/sched/act_police.c kernel-source-2.6.16/net/sched/act_police.c
--- kernel-source-2.6.16.orig/net/sched/act_police.c	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/net/sched/act_police.c	2006-06-13 11:42:12.000000000 +1000
@@ -33,8 +33,8 @@
 #include <net/sock.h>
 #include <net/act_api.h>
 
-#define L2T(p,L)   ((p)->R_tab->data[(L)>>(p)->R_tab->rate.cell_log])
-#define L2T_P(p,L) ((p)->P_tab->data[(L)>>(p)->P_tab->rate.cell_log])
+#define L2T(p,L)   qdisc_l2t((p)->R_tab,L)
+#define L2T_P(p,L) qdisc_l2t((p)->P_tab,L)
 #define PRIV(a) ((struct tcf_police *) (a)->priv)
 
 /* use generic hash table */
diff -Nurp kernel-source-2.6.16.orig/net/sched/sch_cbq.c kernel-source-2.6.16/net/sched/sch_cbq.c
--- kernel-source-2.6.16.orig/net/sched/sch_cbq.c	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/net/sched/sch_cbq.c	2006-06-13 11:42:12.000000000 +1000
@@ -193,7 +193,7 @@ struct cbq_sched_data
 };
 
 
-#define L2T(cl,len)	((cl)->R_tab->data[(len)>>(cl)->R_tab->rate.cell_log])
+#define L2T(cl,len)	qdisc_l2t((cl)->R_tab,len)
 
 
 static __inline__ unsigned cbq_hash(u32 h)
diff -Nurp kernel-source-2.6.16.orig/net/sched/sch_htb.c kernel-source-2.6.16/net/sched/sch_htb.c
--- kernel-source-2.6.16.orig/net/sched/sch_htb.c	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/net/sched/sch_htb.c	2006-06-13 11:42:12.000000000 +1000
@@ -206,12 +206,10 @@ struct htb_class
 static __inline__ long L2T(struct htb_class *cl,struct qdisc_rate_table *rate,
 	int size)
 { 
-    int slot = size >> rate->rate.cell_log;
-    if (slot > 255) {
+    long result = qdisc_l2t(rate, size);
+    if (result > rate->data[255])
 	cl->xstats.giants++;
-	slot = 255;
-    }
-    return rate->data[slot];
+    return result;
 }
 
 struct htb_sched
diff -Nurp kernel-source-2.6.16.orig/net/sched/sch_tbf.c kernel-source-2.6.16/net/sched/sch_tbf.c
--- kernel-source-2.6.16.orig/net/sched/sch_tbf.c	2006-03-20 15:53:29.000000000 +1000
+++ kernel-source-2.6.16/net/sched/sch_tbf.c	2006-06-13 11:42:12.000000000 +1000
@@ -132,8 +132,8 @@ struct tbf_sched_data
 	struct Qdisc	*qdisc;		/* Inner qdisc, default - bfifo queue */
 };
 
-#define L2T(q,L)   ((q)->tcfp_R_tab->data[(L)>>(q)->tcfp_R_tab->rate.cell_log])
-#define L2T_P(q,L) ((q)->tcfp_P_tab->data[(L)>>(q)->tcfp_P_tab->rate.cell_log])
+#define L2T(q,L)   qdisc_l2t((q)->tcfp_R_tab,L)
+#define L2T_P(q,L) qdisc_l2t((q)->tcfp_P_tab,L)
 
 static int tbf_enqueue(struct sk_buff *skb, struct Qdisc* sch)
 {