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ice: Add code for DCB initialization part 4/4

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When the firmware doesn't support LLDP or DCBX, the driver should switch
to "software LLDP mode". This patch adds support for the same.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anirudh Venkataramanan 2019-02-28 15:24:25 -08:00 committed by Jeff Kirsher
parent 7b9ffc76bf
commit 0deab659a6
2 changed files with 81 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/ice/ice_dcb.h
View File

@ -6,6 +6,7 @@
#include "ice_type.h"
#define ICE_DCBX_STATUS_NOT_STARTED 0
#define ICE_DCBX_STATUS_IN_PROGRESS 1
#define ICE_DCBX_STATUS_DONE 2
#define ICE_DCBX_STATUS_DIS 7

82
drivers/net/ethernet/intel/ice/ice_dcb_lib.c
View File

@ -186,6 +186,50 @@ static int ice_dcb_init_cfg(struct ice_pf *pf)
return ret;
}
/**
* ice_dcb_sw_default_config - Apply a default DCB config
* @pf: pf to apply config to
*/
static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf)
{
struct ice_aqc_port_ets_elem buf = { 0 };
struct ice_dcbx_cfg *dcbcfg;
struct ice_port_info *pi;
struct ice_hw *hw;
int ret;
hw = &pf->hw;
pi = hw->port_info;
dcbcfg = devm_kzalloc(&pf->pdev->dev, sizeof(*dcbcfg), GFP_KERNEL);
memset(dcbcfg, 0, sizeof(*dcbcfg));
memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg));
dcbcfg->etscfg.willing = 1;
dcbcfg->etscfg.maxtcs = 8;
dcbcfg->etscfg.tcbwtable[0] = 100;
dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS;
memcpy(&dcbcfg->etsrec, &dcbcfg->etscfg,
sizeof(dcbcfg->etsrec));
dcbcfg->etsrec.willing = 0;
dcbcfg->pfc.willing = 1;
dcbcfg->pfc.pfccap = IEEE_8021QAZ_MAX_TCS;
dcbcfg->numapps = 1;
dcbcfg->app[0].selector = ICE_APP_SEL_ETHTYPE;
dcbcfg->app[0].priority = 3;
dcbcfg->app[0].prot_id = ICE_APP_PROT_ID_FCOE;
ret = ice_pf_dcb_cfg(pf, dcbcfg);
devm_kfree(&pf->pdev->dev, dcbcfg);
if (ret)
return ret;
return ice_query_port_ets(pi, &buf, sizeof(buf), NULL);
}
/**
* ice_init_pf_dcb - initialize DCB for a PF
* @pf: pf to initiialize DCB for
@ -195,6 +239,7 @@ int ice_init_pf_dcb(struct ice_pf *pf)
struct device *dev = &pf->pdev->dev;
struct ice_port_info *port_info;
struct ice_hw *hw = &pf->hw;
int sw_default = 0;
int err;
port_info = hw->port_info;
@ -223,8 +268,41 @@ int ice_init_pf_dcb(struct ice_pf *pf)
}
err = ice_init_dcb(hw);
if (err)
goto dcb_init_err;
if (err) {
/* FW LLDP not in usable state, default to SW DCBx/LLDP */
dev_info(&pf->pdev->dev, "FW LLDP not in usable state\n");
hw->port_info->dcbx_status = ICE_DCBX_STATUS_NOT_STARTED;
hw->port_info->is_sw_lldp = true;
}
if (port_info->dcbx_status == ICE_DCBX_STATUS_DIS)
dev_info(&pf->pdev->dev, "DCBX disabled\n");
/* LLDP disabled in FW */
if (port_info->is_sw_lldp) {
sw_default = 1;
dev_info(&pf->pdev->dev, "DCBx/LLDP in SW mode.\n");
}
if (port_info->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
sw_default = 1;
dev_info(&pf->pdev->dev, "DCBX not started\n");
}
if (sw_default) {
err = ice_dcb_sw_dflt_cfg(pf);
if (err) {
dev_err(&pf->pdev->dev,
"Failed to set local DCB config %d\n", err);
err = -EIO;
goto dcb_init_err;
}
pf->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
set_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
set_bit(ICE_FLAG_DCB_ENA, pf->flags);
return 0;
}
/* DCBX in FW and LLDP enabled in FW */
pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_IEEE;