diff mbox series

[RFC,v1,net-next,2/4] net/sched: sch_tbf: Use Qdisc backpressure infrastructure

Message ID e089df17037a30119909b07d72fb4f15f18325aa.1651800598.git.peilin.ye@bytedance.com (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series net: Qdisc backpressure infrastructure | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 1 maintainers not CCed: edumazet@google.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Peilin Ye May 6, 2022, 7:44 p.m. UTC 
From: Peilin Ye <peilin.ye@bytedance.com>

Recently we introduced a Qdisc backpressure infrastructure for TCP and
UDP sockets.  Use it in TBF.

Suggested-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
---
 net/sched/sch_tbf.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index 72102277449e..06229765290b 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -250,6 +250,7 @@  static int tbf_enqueue(struct sk_buff *skb, struct Qdisc *sch,
 	}
 	ret = qdisc_enqueue(skb, q->qdisc, to_free);
 	if (ret != NET_XMIT_SUCCESS) {
+		qdisc_backpressure_overlimit(sch, skb);
 		if (net_xmit_drop_count(ret))
 			qdisc_qstats_drop(sch);
 		return ret;
@@ -306,6 +307,7 @@  static struct sk_buff *tbf_dequeue(struct Qdisc *sch)
 			return skb;
 		}
 
+		qdisc_backpressure_throttle(sch);
 		qdisc_watchdog_schedule_ns(&q->watchdog,
 					   now + max_t(long, -toks, -ptoks));