diff mbox series

[net-next,3/5] net/sched: sch_hfsc: warn about class in use while deleting

Message ID 20230721191332.1424997-4-pctammela@mojatatu.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net/sched: improve class lifetime handling | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1342 this patch: 1342
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 1365 this patch: 1365
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1365 this patch: 1365
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 11 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Pedro Tammela July 21, 2023, 7:13 p.m. UTC 
Add extack to warn that delete was rejected because
the class is still in use

Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
---
 net/sched/sch_hfsc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 122fe775c7ab..4800191f7c49 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1095,8 +1095,10 @@  hfsc_delete_class(struct Qdisc *sch, unsigned long arg,
 	struct hfsc_class *cl = (struct hfsc_class *)arg;
 
 	if (cl->level > 0 || qdisc_class_in_use(&cl->cl_common) ||
-	    cl == &q->root)
+	    cl == &q->root) {
+		NL_SET_ERR_MSG(extack, "HFSC class in use");
 		return -EBUSY;
+	}
 
 	sch_tree_lock(sch);