[PATCH v2 2/2] net: thunderx: Fix TL4 configuration for secondary Qsets
From: sunil.kovvuri at gmail.com <hidden>
Date: 2016-06-27 10:00:56
Also in:
lkml, netdev
Subsystem:
arm/cavium thunder network driver, networking drivers, the rest · Maintainers:
Sunil Goutham, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Sunil Goutham <redacted> TL4 calculation for a given SQ of secondary Qsets is incorrect and goes out of bounds and also for some SQ's TL4 chosen will transmit data via a different BGX interface and not same as primary Qset's interface. This patch fixes this issue. Signed-off-by: Sunil Goutham <redacted> --- drivers/net/ethernet/cavium/thunder/nic_main.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c
index 95f17f8..16ed203 100644
--- a/drivers/net/ethernet/cavium/thunder/nic_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c@@ -499,6 +499,7 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic, u32 rr_quantum; u8 sq_idx = sq->sq_num; u8 pqs_vnic; + int svf; if (sq->sqs_mode) pqs_vnic = nic->pqs_vf[vnic];
@@ -511,10 +512,19 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic, /* 24 bytes for FCS, IPG and preamble */ rr_quantum = ((NIC_HW_MAX_FRS + 24) / 4); - tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX); + if (!sq->sqs_mode) { + tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX); + } else { + for (svf = 0; svf < MAX_SQS_PER_VF; svf++) { + if (nic->vf_sqs[pqs_vnic][svf] == vnic) + break; + } + tl4 = (MAX_LMAC_PER_BGX * NIC_TL4_PER_LMAC); + tl4 += (lmac * NIC_TL4_PER_LMAC * MAX_SQS_PER_VF); + tl4 += (svf * NIC_TL4_PER_LMAC); + tl4 += (bgx * NIC_TL4_PER_BGX); + } tl4 += sq_idx; - if (sq->sqs_mode) - tl4 += vnic * 8; tl3 = tl4 / (NIC_MAX_TL4 / NIC_MAX_TL3); nic_reg_write(nic, NIC_PF_QSET_0_127_SQ_0_7_CFG2 |
--
2.7.4