diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-10-20 20:12:54 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-23 15:49:44 -0700 |
| commit | 81a4169856987b65918a93e9b9f53a28496575cf (patch) | |
| tree | b29ac02e3430dc7bf9f924b5711da56d2bcae778 /net/sched | |
| parent | 06e4dd18f86876bc29786d66165f781cd0265b7c (diff) | |
| download | linux-81a4169856987b65918a93e9b9f53a28496575cf.tar.gz | |
net_sched: sch_fq: fastpath needs to take care of sk->sk_pacing_status
If packets of a TCP flows take the fast path, we need to make sure
sk->sk_pacing_status is set to SK_PACING_FQ otherwise TCP might
fallback to internal pacing, which is not optimal.
Fixes: 076433bd78d7 ("net_sched: sch_fq: add fast path for mostly idle qdisc")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20231020201254.732527-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_fq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c index f6fd0de293e58..bf9d00518a608 100644 --- a/net/sched/sch_fq.c +++ b/net/sched/sch_fq.c @@ -383,6 +383,10 @@ static struct fq_flow *fq_classify(struct Qdisc *sch, struct sk_buff *skb, if (fq_fastpath_check(sch, skb, now)) { q->internal.stat_fastpath_packets++; + if (skb->sk == sk && q->rate_enable && + READ_ONCE(sk->sk_pacing_status) != SK_PACING_FQ) + smp_store_release(&sk->sk_pacing_status, + SK_PACING_FQ); return &q->internal; } |