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ice: Correctly handle return values for init DCB

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In the init path for DCB, the call to ice_init_dcb()
can return a non-zero value for either an actual
error, or due to the FW lldp engine being stopped.

We are currently treating all non-zero values only as
an indication that the FW LLDP engine is stopped.

Check for an actual error in the DCB init flow.

Signed-off-by: Dave Ertman <david.m.ertman@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:
Dave Ertman 2019-08-08 07:39:25 -07:00 committed by Jeff Kirsher
parent a257f188b7
commit 473ca57488
1 changed files with 8 additions and 9 deletions

17
drivers/net/ethernet/intel/ice/ice_dcb_lib.c

@ -452,14 +452,18 @@ int ice_init_pf_dcb(struct ice_pf *pf, bool locked)
port_info = hw->port_info;
err = ice_init_dcb(hw);
if (err && !port_info->is_sw_lldp) {
dev_err(&pf->pdev->dev, "Error initializing DCB %d\n", 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);
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);
err = ice_dcb_sw_dflt_cfg(pf, locked);
if (err) {
@ -475,7 +479,6 @@ int ice_init_pf_dcb(struct ice_pf *pf, bool locked)
return 0;
}
port_info->is_sw_lldp = false;
set_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags);
/* DCBX in FW and LLDP enabled in FW */
@ -487,10 +490,6 @@ int ice_init_pf_dcb(struct ice_pf *pf, bool locked)
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;
dcb_init_err: