[PATCH v2 net-next 06/12] net: lan966x: deny tc-taprio changes to per-tc max SDU
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From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2022-09-23 16:34:47
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Subsystem:
microchip lan966x ethernet driver, networking drivers, the rest · Maintainers:
Horatiu Vultur, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 4 in this series.
Revisions (4)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
- v4 [diff vs current]
Since the driver does not act upon the max_sdu argument, deny any other values except the default all-zeroes, which means that all traffic classes should use the same MTU as the port itself. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- v1->v2: patch is new drivers/net/ethernet/microchip/lan966x/lan966x_taprio.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_taprio.c b/drivers/net/ethernet/microchip/lan966x/lan966x_taprio.c
index 3f5b212066c5..96367819ff96 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_taprio.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_taprio.c@@ -219,8 +219,16 @@ static int lan966x_taprio_find_list(struct lan966x_port *port, static int lan966x_taprio_check(struct tc_taprio_qopt_offload *qopt) { u64 total_time = 0; + int tc; u32 i; + /* Offloading queueMaxSDU is not supported at the moment, + * only accept the default port MTU + */ + for (tc = 0; tc < 8; tc++) + if (qopt->max_sdu[tc]) + return -EOPNOTSUPP; + /* This is not supported by th HW */ if (qopt->cycle_time_extension) return -EOPNOTSUPP;
--
2.34.1