skb = skb_clone(f->skb, GFP_ATOMIC);
if (skb) {
- do_gettimeofday(&f->sent);
- f->sent_jiffs = (u32) jiffies;
+ f->sent = ktime_get();
__skb_queue_head_init(&queue);
__skb_queue_tail(&queue, skb);
aoenet_xmit(&queue);
skb = skb_clone(skb, GFP_ATOMIC);
if (skb == NULL)
return;
- do_gettimeofday(&f->sent);
- f->sent_jiffs = (u32) jiffies;
+ f->sent = ktime_get();
__skb_queue_head_init(&queue);
__skb_queue_tail(&queue, skb);
aoenet_xmit(&queue);
static int
tsince_hr(struct frame *f)
{
- struct timeval now;
- int n;
+ u64 delta = ktime_to_ns(ktime_sub(ktime_get(), f->sent));
- do_gettimeofday(&now);
- n = now.tv_usec - f->sent.tv_usec;
- n += (now.tv_sec - f->sent.tv_sec) * USEC_PER_SEC;
+ /* delta is normally under 4.2 seconds, avoid 64-bit division */
+ if (likely(delta <= UINT_MAX))
+ return (u32)delta / NSEC_PER_USEC;
- if (n < 0)
- n = -n;
+ /* avoid overflow after 71 minutes */
+ if (delta > ((u64)INT_MAX * NSEC_PER_USEC))
+ return INT_MAX;
- /* For relatively long periods, use jiffies to avoid
- * discrepancies caused by updates to the system time.
- *
- * On system with HZ of 1000, 32-bits is over 49 days
- * worth of jiffies, or over 71 minutes worth of usecs.
- *
- * Jiffies overflow is handled by subtraction of unsigned ints:
- * (gdb) print (unsigned) 2 - (unsigned) 0xfffffffe
- * $3 = 4
- * (gdb)
- */
- if (n > USEC_PER_SEC / 4) {
- n = ((u32) jiffies) - f->sent_jiffs;
- n *= USEC_PER_SEC / HZ;
- }
-
- return n;
+ return div_u64(delta, NSEC_PER_USEC);
}
static int
nf->waited = 0;
nf->waited_total = f->waited_total;
nf->sent = f->sent;
- nf->sent_jiffs = f->sent_jiffs;
f->skb = skb;
return nf;
skb = skb_clone(f->skb, GFP_ATOMIC);
if (skb) {
- do_gettimeofday(&f->sent);
- f->sent_jiffs = (u32) jiffies;
+ f->sent = ktime_get();
__skb_queue_head_init(&queue);
__skb_queue_tail(&queue, skb);
aoenet_xmit(&queue);
d->timer.function = rexmit_timer;
skb = skb_clone(skb, GFP_ATOMIC);
- if (skb) {
- do_gettimeofday(&f->sent);
- f->sent_jiffs = (u32) jiffies;
- }
+ if (skb)
+ f->sent = ktime_get();
return skb;
}