From: Subbaraya Sundeep sbhatta@marvell.com
stable inclusion from stable-5.10.67 commit c10b1afc2f43f58a26207128edc0705b25367036 bugzilla: 182619 https://gitee.com/openeuler/kernel/issues/I4EWO7
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit e8fb4df1f5d84bc08dd4f4827821a851d2eab241 ]
'bp_ena' in Aura context is NIX block index, setting it zero will always backpressure NIX0 block, even if NIXLF belongs to NIX1. Hence fix this by setting it appropriately based on NIX block address.
Signed-off-by: Subbaraya Sundeep sbhatta@marvell.com Signed-off-by: Hariprasad Kelam hkelam@marvell.com Signed-off-by: Sunil Goutham sgoutham@marvell.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- .../ethernet/marvell/octeontx2/nic/otx2_common.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c index df238e46e2ae..b062ed06235d 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c @@ -1129,7 +1129,22 @@ static int otx2_aura_init(struct otx2_nic *pfvf, int aura_id, /* Enable backpressure for RQ aura */ if (aura_id < pfvf->hw.rqpool_cnt) { aq->aura.bp_ena = 0; + /* If NIX1 LF is attached then specify NIX1_RX. + * + * Below NPA_AURA_S[BP_ENA] is set according to the + * NPA_BPINTF_E enumeration given as: + * 0x0 + a*0x1 where 'a' is 0 for NIX0_RX and 1 for NIX1_RX so + * NIX0_RX is 0x0 + 0*0x1 = 0 + * NIX1_RX is 0x0 + 1*0x1 = 1 + * But in HRM it is given that + * "NPA_AURA_S[BP_ENA](w1[33:32]) - Enable aura backpressure to + * NIX-RX based on [BP] level. One bit per NIX-RX; index + * enumerated by NPA_BPINTF_E." + */ + if (pfvf->nix_blkaddr == BLKADDR_NIX1) + aq->aura.bp_ena = 1; aq->aura.nix0_bpid = pfvf->bpid[0]; + /* Set backpressure level for RQ's Aura */ aq->aura.bp = RQ_BP_LVL_AURA; }