From: Vinicius Costa Gomes Date: Fri, 9 Dec 2022 04:15:18 +0000 (+0800) Subject: igc: Use strict cycles for Qbv scheduling X-Git-Tag: v5.15.92~874 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b46b53f45f938572629e5633cff88fa8eb805d1;p=platform%2Fkernel%2Flinux-rpi.git igc: Use strict cycles for Qbv scheduling [ Upstream commit d8f45be01dd9381065a3778a579385249ed011dc ] Configuring strict cycle mode in the controller forces more well behaved transmissions when taprio is offloaded. When set this strict_cycle and strict_end, transmission is not enabled if the whole packet cannot be completed before end of the Qbv cycle. Fixes: 82faa9b79950 ("igc: Add support for ETF offloading") Signed-off-by: Vinicius Costa Gomes Signed-off-by: Aravindhan Gunasekaran Signed-off-by: Muhammad Husaini Zulkifli Tested-by: Naama Meir Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index 0fce22d..4a01995 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -110,15 +110,8 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) wr32(IGC_STQT(i), ring->start_time); wr32(IGC_ENDQT(i), ring->end_time); - if (adapter->base_time) { - /* If we have a base_time we are in "taprio" - * mode and we need to be strict about the - * cycles: only transmit a packet if it can be - * completed during that cycle. - */ - txqctl |= IGC_TXQCTL_STRICT_CYCLE | - IGC_TXQCTL_STRICT_END; - } + txqctl |= IGC_TXQCTL_STRICT_CYCLE | + IGC_TXQCTL_STRICT_END; if (ring->launchtime_enable) txqctl |= IGC_TXQCTL_QUEUE_MODE_LAUNCHT;