From b56e4d660a9688ff83f5cbdc6e3ea063352d0d79 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Sun, 12 Jan 2025 19:32:45 +0100 Subject: [PATCH] net: airoha: Enforce ETS Qdisc priomap EN7581 SoC supports fixed QoS band priority where WRR queues have lowest priorities with respect to SP ones. E.g: WRR0, WRR1, .., WRRm, SP0, SP1, .., SPn Enforce ETS Qdisc priomap according to the hw capabilities. Suggested-by: Davide Caratti Signed-off-by: Lorenzo Bianconi Reviewed-by: Davide Caratti Link: https://patch.msgid.link/20250112-airoha_ets_priomap-v1-1-fb616de159ba@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mediatek/airoha_eth.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) --- a/drivers/net/ethernet/mediatek/airoha_eth.c +++ b/drivers/net/ethernet/mediatek/airoha_eth.c @@ -2786,7 +2786,7 @@ static int airoha_qdma_set_tx_ets_sched( struct tc_ets_qopt_offload_replace_params *p = &opt->replace_params; enum tx_sched_mode mode = TC_SCH_SP; u16 w[AIROHA_NUM_QOS_QUEUES] = {}; - int i, nstrict = 0; + int i, nstrict = 0, nwrr, qidx; if (p->bands > AIROHA_NUM_QOS_QUEUES) return -EINVAL; @@ -2800,7 +2800,20 @@ static int airoha_qdma_set_tx_ets_sched( if (nstrict == AIROHA_NUM_QOS_QUEUES - 1) return -EINVAL; - for (i = 0; i < p->bands - nstrict; i++) + /* EN7581 SoC supports fixed QoS band priority where WRR queues have + * lowest priorities with respect to SP ones. + * e.g: WRR0, WRR1, .., WRRm, SP0, SP1, .., SPn + */ + nwrr = p->bands - nstrict; + qidx = nstrict && nwrr ? nstrict : 0; + for (i = 1; i <= p->bands; i++) { + if (p->priomap[i % AIROHA_NUM_QOS_QUEUES] != qidx) + return -EINVAL; + + qidx = i == nwrr ? 0 : qidx + 1; + } + + for (i = 0; i < nwrr; i++) w[i] = p->weights[nstrict + i]; if (!nstrict)