From: Usha Ketineni <usha.k.ketineni@intel.com>
Date: Thu, 8 Aug 2019 07:39:24 -0700
Subject: ice: Limit Max TCs on devices with more than 4 ports
Patch-mainline: v5.4-rc1
Git-commit: a257f188b72bf0f8b5a08efba174373f5708ff0c
References: jsc#SLE-7926
This patch limits the max TCs set by the driver to the value provided by
the firmware as per the capabilities of the device. Otherwise, hard coding
to 8 TC max would fail the device configurations with more than 4 ports.
Signed-off-by: Usha Ketineni <usha.k.ketineni@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/ice/ice_adminq_cmd.h | 1 +
drivers/net/ethernet/intel/ice/ice_common.c | 12 ++++++++++++
drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 10 ++++++++--
drivers/net/ethernet/intel/ice/ice_type.h | 3 +++
4 files changed, 24 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -91,6 +91,7 @@ struct ice_aqc_list_caps_elem {
#define ICE_AQC_CAPS_SRIOV 0x0012
#define ICE_AQC_CAPS_VF 0x0013
#define ICE_AQC_CAPS_VSI 0x0017
+#define ICE_AQC_CAPS_DCB 0x0018
#define ICE_AQC_CAPS_RSS 0x0040
#define ICE_AQC_CAPS_RXQS 0x0041
#define ICE_AQC_CAPS_TXQS 0x0042
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1594,6 +1594,18 @@ ice_parse_caps(struct ice_hw *hw, void *
prefix, func_p->guar_num_vsi);
}
break;
+ case ICE_AQC_CAPS_DCB:
+ caps->dcb = (number == 1);
+ caps->active_tc_bitmap = logical_id;
+ caps->maxtc = phys_id;
+ ice_debug(hw, ICE_DBG_INIT,
+ "%s: DCB = %d\n", prefix, caps->dcb);
+ ice_debug(hw, ICE_DBG_INIT,
+ "%s: active TC bitmap = %d\n", prefix,
+ caps->active_tc_bitmap);
+ ice_debug(hw, ICE_DBG_INIT,
+ "%s: TC max = %d\n", prefix, caps->maxtc);
+ break;
case ICE_AQC_CAPS_RSS:
caps->rss_table_size = number;
caps->rss_table_entry_width = logical_id;
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -413,7 +413,7 @@ static int ice_dcb_sw_dflt_cfg(struct ic
memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg));
dcbcfg->etscfg.willing = 1;
- dcbcfg->etscfg.maxtcs = 8;
+ dcbcfg->etscfg.maxtcs = hw->func_caps.common_cap.maxtc;
dcbcfg->etscfg.tcbwtable[0] = 100;
dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS;
@@ -422,7 +422,7 @@ static int ice_dcb_sw_dflt_cfg(struct ic
dcbcfg->etsrec.willing = 0;
dcbcfg->pfc.willing = 1;
- dcbcfg->pfc.pfccap = IEEE_8021QAZ_MAX_TCS;
+ dcbcfg->pfc.pfccap = hw->func_caps.common_cap.maxtc;
dcbcfg->numapps = 1;
dcbcfg->app[0].selector = ICE_APP_SEL_ETHTYPE;
@@ -455,6 +455,9 @@ int ice_init_pf_dcb(struct ice_pf *pf, b
if (err) {
/* FW LLDP is disabled, activate SW DCBX/LLDP mode */
dev_info(&pf->pdev->dev,
+ "DCB is enabled in the hardware, max number of TCs supported on this port are %d\n",
+ pf->hw.func_caps.common_cap.maxtc);
+ dev_info(&pf->pdev->dev,
"FW LLDP is disabled, DCBx/LLDP in SW mode.\n");
port_info->is_sw_lldp = true;
clear_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags);
@@ -484,6 +487,9 @@ int ice_init_pf_dcb(struct ice_pf *pf, b
if (err)
goto dcb_init_err;
+ dev_info(&pf->pdev->dev,
+ "DCB is enabled in the hardware, max number of TCs supported on this port are %d\n",
+ pf->hw.func_caps.common_cap.maxtc);
dev_info(&pf->pdev->dev, "DCBX offload supported\n");
return err;
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -139,6 +139,9 @@ struct ice_phy_info {
/* Common HW capabilities for SW use */
struct ice_hw_common_caps {
u32 valid_functions;
+ /* DCB capabilities */
+ u32 active_tc_bitmap;
+ u32 maxtc;
/* Tx/Rx queues */
u16 num_rxq; /* Number/Total Rx queues */