app: fix silent enqueue fail in test_mbuf test_refcnt_iter

Message ID 20230809053843.3698537-1-jhascoet@kalray.eu (mailing list archive)
State Superseded, archived
Delegated to: David Marchand
Headers
Series app: fix silent enqueue fail in test_mbuf test_refcnt_iter |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation success Compilation OK
ci/intel-Testing success Testing PASS
ci/github-robot: build success github build: passed
ci/intel-Functional success Functional PASS
ci/loongarch-compilation success Compilation OK
ci/loongarch-unit-testing success Unit Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/iol-unit-arm64-testing success Testing PASS
ci/iol-unit-amd64-testing success Testing PASS
ci/iol-compile-arm64-testing success Testing PASS
ci/iol-sample-apps-testing success Testing PASS
ci/iol-compile-amd64-testing success Testing PASS

Commit Message

jhascoet Aug. 9, 2023, 5:38 a.m. UTC
In case of ring full state, we retry the enqueue
operation in order to avoid mbuf loss.

Fixes: af75078fece ("first public release")

Signed-off-by: Julien Hascoet <jhascoet@kalrayinc.com>
---
 app/test/test_mbuf.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
  

Comments

David Marchand Aug. 9, 2023, 9:18 a.m. UTC | #1
On Wed, Aug 9, 2023 at 7:39 AM jhascoet <ju.hascoet@gmail.com> wrote:
>
> In case of ring full state, we retry the enqueue
> operation in order to avoid mbuf loss.
>
> Fixes: af75078fece ("first public release")

Not sure we need to backport, but in doubt, I would mark it
Cc: stable@dpdk.org


>
> Signed-off-by: Julien Hascoet <jhascoet@kalrayinc.com>

Olivier, the patch lgtm, can you have a look?
Thanks.
  

Patch

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index efac01806b..be114e3302 100644
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -1033,12 +1033,17 @@  test_refcnt_iter(unsigned int lcore, unsigned int iter,
 		tref += ref;
 		if ((ref & 1) != 0) {
 			rte_pktmbuf_refcnt_update(m, ref);
-			while (ref-- != 0)
-				rte_ring_enqueue(refcnt_mbuf_ring, m);
+			while (ref-- != 0) {
+				/* retry in case of failure */
+				while (rte_ring_enqueue(refcnt_mbuf_ring, m) != 0)
+					;
+			}
 		} else {
 			while (ref-- != 0) {
 				rte_pktmbuf_refcnt_update(m, 1);
-				rte_ring_enqueue(refcnt_mbuf_ring, m);
+				/* retry in case of failure */
+				while (rte_ring_enqueue(refcnt_mbuf_ring, m) != 0)
+					;
 			}
 		}
 		rte_pktmbuf_free(m);