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[NETEM]: use better types for time values 

The random number generator always generates 32 bit values.
The time values are limited by psched_tdiff_t

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2007-03-22 12:16:21 -07:00 committed by David S. Miller
parent a362e0a789
commit b407621c35
1 changed files with 12 additions and 9 deletions
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21
net/sched/sch_netem.c
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@ -57,19 +57,20 @@ struct netem_sched_data {
struct Qdisc *qdisc;
struct qdisc_watchdog watchdog;
u32 latency;
psched_tdiff_t latency;
psched_tdiff_t jitter;
u32 loss;
u32 limit;
u32 counter;
u32 gap;
u32 jitter;
u32 duplicate;
u32 reorder;
u32 corrupt;
struct crndstate {
unsigned long last;
unsigned long rho;
u32 last;
u32 rho;
} delay_cor, loss_cor, dup_cor, reorder_cor, corrupt_cor;
struct disttable {
@ -96,7 +97,7 @@ static void init_crandom(struct crndstate *state, unsigned long rho)
* Next number depends on last value.
* rho is scaled to avoid floating point.
*/
static unsigned long get_crandom(struct crndstate *state)
static u32 get_crandom(struct crndstate *state)
{
u64 value, rho;
unsigned long answer;
@ -115,11 +116,13 @@ static unsigned long get_crandom(struct crndstate *state)
* std deviation sigma. Uses table lookup to approximate the desired
* distribution, and a uniformly-distributed pseudo-random source.
*/
static long tabledist(unsigned long mu, long sigma,
struct crndstate *state, const struct disttable *dist)
static psched_tdiff_t tabledist(psched_tdiff_t mu, psched_tdiff_t sigma,
struct crndstate *state,
const struct disttable *dist)
{
long t, x;
unsigned long rnd;
psched_tdiff_t x;
long t;
u32 rnd;
if (sigma == 0)
return mu;