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Message-Id: <20221215230758.3595578-3-anthony.l.nguyen@intel.com> Date: Thu, 15 Dec 2022 15:07:54 -0800 From: Tony Nguyen <anthony.l.nguyen@...el.com> To: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, edumazet@...gle.com Cc: Vinicius Costa Gomes <vinicius.gomes@...el.com>, netdev@...r.kernel.org, anthony.l.nguyen@...el.com, sasha.neftin@...el.com, Aravindhan Gunasekaran <aravindhan.gunasekaran@...el.com>, Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>, Naama Meir <naamax.meir@...ux.intel.com> Subject: [PATCH net 2/6] igc: Use strict cycles for Qbv scheduling From: Vinicius Costa Gomes <vinicius.gomes@...el.com> 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 <vinicius.gomes@...el.com> Signed-off-by: Aravindhan Gunasekaran <aravindhan.gunasekaran@...el.com> Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com> Tested-by: Naama Meir <naamax.meir@...ux.intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com> --- drivers/net/ethernet/intel/igc/igc_tsn.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index f975ed807da1..684aedd4d088 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -140,15 +140,8 @@ 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; -- 2.35.1
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