Thread (10 messages) 10 messages, 3 authors, 1d ago

[PATCH net-next v3 1/7] net: mctp: usblib: Add to parameterized kunit tests.

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WARM1d LANDED

From: James Lee <hidden>
Date: 2026-10-14 04:47:57
Also in: linux-hardening, lkml
Subsystem: management component transport protocol (mctp), networking drivers, the rest · Maintainers: Jeremy Kerr, Matt Johnston, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Revision v3 of 3 in this series; landed in mainline as acfb9c263d70 on 2026-10-20.

Revisions (3)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 current
Add parameterized tests to cover worst case scenarios for packet
splitting and length.

Signed-off-by: James Lee <redacted>
---
 drivers/net/mctp/mctp-usblib-test.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/mctp/mctp-usblib-test.c b/drivers/net/mctp/mctp-usblib-test.c
index 9df401a914ff537207911f03bd08f32b5a5e20d1..4c27307900fb6116572bc9d89f3def6f06c30397 100644
--- a/drivers/net/mctp/mctp-usblib-test.c
+++ b/drivers/net/mctp/mctp-usblib-test.c
@@ -386,12 +386,18 @@ static const struct mctp_usblib_test_pkt_span mctp_usblib_test_pkt_spans[] = {
 	{ "1p2x-split-mctphdr", 1, { 16 }, 2, { 6, 10 } },
 	/* Single packet split over 3 transfers, middle entirely continuation */
 	{ "1p3x-split", 1, { 12 }, 3, { 4, 4, 4 } },
+	/* A packet split over 5 transfers, splitting on and between each header. */
+	{ "1p5x-split", 1, { 12 }, 5, { 3, 1, 1, 3, 4}},
 	/* Max-sized single transfer */
 	{ "1p1x-large", 1, { 8191 }, 1, { 8191 } },
 	/* Two large packets, split at the worst-case for allocation, with a
 	 * single byte continuing the span
 	 */
-	{ "2p2x-large-split", 2, { 8190, 8190 }, 2, { 8191, 8189 } },
+	{ "2p2x-large-split", 2, { 8190, 8191 }, 2, { 8191, 8190 } },
+	/* Three large packets, split at the worst-case for allocation,
+	 * with a single byte continuing each span
+	 */
+	{ "3p3x-large-split", 3, { 8190, 8191, 8191 }, 3, { 8191, 8191, 8190 } },
 };
 
 KUNIT_ARRAY_PARAM(mctp_usblib_test_rx_pkt_span, mctp_usblib_test_pkt_spans,
-- 
2.47.3
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