[PATCH] pktgen: Fix delay handling
From: Eric Dumazet <hidden>
Date: 2009-10-01 09:47:34
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
After last pktgen changes, delay handling is wrong. pktgen actually sends packets at full line speed. Fix is to update pkt_dev->next_tx even if spin() returns early, so that next spin() calls have a chance to see a positive delay. Signed-off-by: Eric Dumazet <redacted> --- net/core/pktgen.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 0bcecbf..1a0682e 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c@@ -2106,15 +2106,17 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) { ktime_t start; - s32 remaining; + s64 remaining; struct hrtimer_sleeper t; hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); hrtimer_set_expires(&t.timer, spin_until); remaining = ktime_to_us(hrtimer_expires_remaining(&t.timer)); - if (remaining <= 0) + if (remaining <= 0) { + pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); return; + } start = ktime_now(); if (remaining < 100)