[PATCH net-next 2/2] net/sched: fq_codel: local packets no longer count against memory limit

[Eric Dumazet <edumazet@google.com>]

Commit 95b58430abe7 ("fq_codel: add memory limitation per queue")
claimed that the 32Mb default was "reasonable even for heavy duty usages."

In practice, this is not the case.

Packets that are associated with local sockets sk_wmem_alloc
do not really need additional memory control.

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/sched/sch_fq_codel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 1b1de693d4c64a1f5f4e9e788371829dea91740e..71107dc52be799a14f370f2ad74d2eadd93992c1 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -212,7 +212,7 @@ static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch,
 		q->new_flow_count++;
 		WRITE_ONCE(flow->deficit, q->quantum);
 	}
-	get_codel_cb(skb)->mem_usage = skb->truesize;
+	get_codel_cb(skb)->mem_usage = is_skb_wmem(skb) ? 0 : skb->truesize;
 	q->memory_usage += get_codel_cb(skb)->mem_usage;
 	memory_limited = q->memory_usage > q->memory_limit;
 	qdisc_qlen_inc(sch);
-- 
2.54.0.563.g4f69b47b94-goog