pkt_sched: fq: increase max delay from 125 ms to one second
FQ/pacing has a clamp of delay of 125 ms, to avoid some possible harm.
It turns out this delay is too small to allow pacing low rates :
Some ISP setup very aggressive policers as low as 16kbit.
Now TCP stack has spurious rtx prevention, it seems safe to increase
this fixed parameter, without adding a qdisc attribute.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index cbd7e1f..9b05924 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c
@@ -481,12 +481,11 @@
if (likely(rate))
do_div(len, rate);
/* Since socket rate can change later,
- * clamp the delay to 125 ms.
- * TODO: maybe segment the too big skb, as in commit
- * e43ac79a4bc ("sch_tbf: segment too big GSO packets")
+ * clamp the delay to 1 second.
+ * Really, providers of too big packets should be fixed !
*/
- if (unlikely(len > 125 * NSEC_PER_MSEC)) {
- len = 125 * NSEC_PER_MSEC;
+ if (unlikely(len > NSEC_PER_SEC)) {
+ len = NSEC_PER_SEC;
q->stat_pkts_too_long++;
}