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| author |   Fan Yu <fan.yu9@zte.com.cn> | 2025-07-24 21:28:37 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-07-25 15:47:21 -0700 |
| commit | bf3c032bfe16489abe38986e2c05fb5f9073319f (patch) | |
| tree | c0050a708a78f00c0a9e5599823d7f3331d612ee | |
| parent | Merge branch 'net-add-sockaddr_inet-unified-address-structure' (diff) | |
| download | wireguard-linux-bf3c032bfe16489abe38986e2c05fb5f9073319f.tar.xz wireguard-linux-bf3c032bfe16489abe38986e2c05fb5f9073319f.zip | |
net/sched: Add precise drop reason for pfifo_fast queue overflows
Currently, packets dropped by pfifo_fast due to queue overflow are
marked with a generic SKB_DROP_REASON_QDISC_DROP in __dev_xmit_skb().
This patch adds explicit drop reason SKB_DROP_REASON_QDISC_OVERLIMIT
for queue-full cases, providing better distinction from other qdisc drops.
Signed-off-by: Fan Yu <fan.yu9@zte.com.cn>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://patch.msgid.link/20250724212837119BP9HOs0ibXDRWgsXMMir7@zte.com.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/sched/sch_generic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 16afb834fe4a..1e008a228ebd 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -740,6 +740,8 @@ static int pfifo_fast_enqueue(struct sk_buff *skb, struct Qdisc *qdisc, err = skb_array_produce(q, skb); if (unlikely(err)) { + tcf_set_drop_reason(skb, SKB_DROP_REASON_QDISC_OVERLIMIT); + if (qdisc_is_percpu_stats(qdisc)) return qdisc_drop_cpu(skb, qdisc, to_free); else |