bnxt_en: Convert error code in firmware message response to standard code.

The main firmware messaging function returns the firmware defined error
code and many callers have to convert to standard error code for proper
propagation to userspace.  Convert bnxt_hwrm_do_send_msg() to return
standard error code so we can do away with all the special error code
handling by the many callers.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -4048,6 +4048,32 @@ void bnxt_hwrm_cmd_hdr_init(struct bnxt *bp, void *request, u16 req_type,
 		req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
 }
 
+static int bnxt_hwrm_to_stderr(u32 hwrm_err)
+{
+	switch (hwrm_err) {
+	case HWRM_ERR_CODE_SUCCESS:
+		return 0;
+	case HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED:
+		return -EACCES;
+	case HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR:
+		return -ENOSPC;
+	case HWRM_ERR_CODE_INVALID_PARAMS:
+	case HWRM_ERR_CODE_INVALID_FLAGS:
+	case HWRM_ERR_CODE_INVALID_ENABLES:
+	case HWRM_ERR_CODE_UNSUPPORTED_TLV:
+	case HWRM_ERR_CODE_UNSUPPORTED_OPTION_ERR:
+		return -EINVAL;
+	case HWRM_ERR_CODE_NO_BUFFER:
+		return -ENOMEM;
+	case HWRM_ERR_CODE_HOT_RESET_PROGRESS:
+		return -EAGAIN;
+	case HWRM_ERR_CODE_CMD_NOT_SUPPORTED:
+		return -EOPNOTSUPP;
+	default:
+		return -EIO;
+	}
+}
+
 static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 				 int timeout, bool silent)
 {
@@ -4222,7 +4248,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 		netdev_err(bp->dev, "hwrm req_type 0x%x seq id 0x%x error 0x%x\n",
 			   le16_to_cpu(resp->req_type),
 			   le16_to_cpu(resp->seq_id), rc);
-	return rc;
+	return bnxt_hwrm_to_stderr(rc);
 }
 
 int _hwrm_send_message(struct bnxt *bp, void *msg, u32 msg_len, int timeout)
@@ -4335,10 +4361,8 @@ static int bnxt_hwrm_func_drv_rgtr(struct bnxt *bp)
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
-	else if (resp->flags &
-		 cpu_to_le32(FUNC_DRV_RGTR_RESP_FLAGS_IF_CHANGE_SUPPORTED))
+	if (!rc && (resp->flags &
+		    cpu_to_le32(FUNC_DRV_RGTR_RESP_FLAGS_IF_CHANGE_SUPPORTED)))
 		bp->fw_cap |= BNXT_FW_CAP_IF_CHANGE;
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;
@@ -4761,7 +4785,7 @@ static int bnxt_hwrm_vnic_set_rss_p5(struct bnxt *bp, u16 vnic_id, bool set_rss)
 		}
 		rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 		if (rc)
-			return -EIO;
+			return rc;
 	}
 	return 0;
 }
@@ -5521,7 +5545,7 @@ static int bnxt_hwrm_get_rings(struct bnxt *bp)
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (rc) {
 		mutex_unlock(&bp->hwrm_cmd_lock);
-		return -EIO;
+		return rc;
 	}
 
 	hw_resc->resv_tx_rings = le16_to_cpu(resp->alloc_tx_rings);
@@ -5685,7 +5709,7 @@ bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (rc)
-		return -ENOMEM;
+		return rc;
 
 	if (bp->hwrm_spec_code < 0x10601)
 		bp->hw_resc.resv_tx_rings = tx_rings;
@@ -5710,7 +5734,7 @@ bnxt_hwrm_reserve_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 				     cp_rings, stats, vnics);
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (rc)
-		return -ENOMEM;
+		return rc;
 
 	rc = bnxt_hwrm_get_rings(bp);
 	return rc;
@@ -5891,9 +5915,7 @@ static int bnxt_hwrm_check_vf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 
 	req.flags = cpu_to_le32(flags);
 	rc = hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		return -ENOMEM;
-	return 0;
+	return rc;
 }
 
 static int bnxt_hwrm_check_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
@@ -5921,9 +5943,7 @@ static int bnxt_hwrm_check_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 
 	req.flags = cpu_to_le32(flags);
 	rc = hwrm_send_message_silent(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		return -ENOMEM;
-	return 0;
+	return rc;
 }
 
 static int bnxt_hwrm_check_rings(struct bnxt *bp, int tx_rings, int rx_rings,
@@ -6483,8 +6503,6 @@ static int bnxt_hwrm_func_backing_store_cfg(struct bnxt *bp, u32 enables)
 	}
 	req.flags = cpu_to_le32(flags);
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -6746,10 +6764,8 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all)
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message_silent(bp, &req, sizeof(req),
 				       HWRM_CMD_TIMEOUT);
-	if (rc) {
-		rc = -EIO;
+	if (rc)
 		goto hwrm_func_resc_qcaps_exit;
-	}
 
 	hw_resc->max_tx_sch_inputs = le16_to_cpu(resp->max_tx_scheduler_inputs);
 	if (!all)
@@ -7257,8 +7273,6 @@ static int bnxt_hwrm_set_br_mode(struct bnxt *bp, u16 br_mode)
 	else
 		return -EINVAL;
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -7278,8 +7292,6 @@ static int bnxt_hwrm_set_cache_line_size(struct bnxt *bp, int size)
 		req.options = FUNC_CFG_REQ_OPTIONS_CACHE_LINESIZE_SIZE_128;
 
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 

drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c

@@ -377,8 +377,6 @@ static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
 	set.data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
 	set.hdr_cnt = 1;
 	rc = hwrm_send_message(bp, &set, sizeof(set), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 
 set_app_exit:
 	dma_free_coherent(&bp->pdev->dev, data_len, data, mapping);
@@ -433,8 +431,6 @@ static int bnxt_hwrm_queue_dscp2pri_cfg(struct bnxt *bp, struct dcb_app *app,
 	dscp2pri->pri = app->priority;
 	req.entry_cnt = cpu_to_le16(1);
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 	dma_free_coherent(&bp->pdev->dev, sizeof(*dscp2pri), dscp2pri,
 			  mapping);
 	return rc;

drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c

@@ -109,13 +109,9 @@ static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
 		memcpy(buf, data_addr, bytesize);
 
 	dma_free_coherent(&bp->pdev->dev, bytesize, data_addr, data_dma_addr);
-	if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
+	if (rc == -EACCES)
 		netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");
-		return -EACCES;
-	} else if (rc) {
-		return -EIO;
-	}
-	return 0;
+	return rc;
 }
 
 static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id,

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -1743,12 +1743,8 @@ static int bnxt_flash_nvram(struct net_device *dev,
 	rc = hwrm_send_message(bp, &req, sizeof(req), FLASH_NVRAM_TIMEOUT);
 	dma_free_coherent(&bp->pdev->dev, data_len, kmem, dma_handle);
 
-	if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
+	if (rc == -EACCES)
 		bnxt_print_admin_err(bp);
-		rc = -EACCES;
-	} else if (rc) {
-		rc = -EIO;
-	}
 	return rc;
 }
 
@@ -1798,12 +1794,8 @@ static int bnxt_firmware_reset(struct net_device *dev,
 	}
 
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
+	if (rc == -EACCES)
 		bnxt_print_admin_err(bp);
-		rc = -EACCES;
-	} else if (rc) {
-		rc = -EIO;
-	}
 	return rc;
 }
 
@@ -2098,12 +2090,8 @@ static int bnxt_flash_package_from_file(struct net_device *dev,
 flash_pkg_exit:
 	mutex_unlock(&bp->hwrm_cmd_lock);
 err_exit:
-	if (hwrm_err == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
+	if (hwrm_err == -EACCES)
 		bnxt_print_admin_err(bp);
-		rc = -EACCES;
-	} else if (hwrm_err) {
-		rc = -EOPNOTSUPP;
-	}
 	return rc;
 }
 
@@ -2642,8 +2630,6 @@ static int bnxt_set_phys_id(struct net_device *dev,
 		led_cfg->led_group_id = bp->leds[i].led_group_id;
 	}
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 

drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c

@@ -133,7 +133,7 @@ static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (rc) {
 		mutex_unlock(&bp->hwrm_cmd_lock);
-		return -EIO;
+		return rc;
 	}
 	vf->func_qcfg_flags = le16_to_cpu(resp->flags);
 	mutex_unlock(&bp->hwrm_cmd_lock);
@@ -164,9 +164,7 @@ static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
 	else
 		req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
 	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (rc)
-		return -EIO;
-	return 0;
+	return rc;
 }
 
 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
@@ -564,10 +562,8 @@ static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 		req.vf_id = cpu_to_le16(pf->first_vf_id + i);
 		rc = _hwrm_send_message(bp, &req, sizeof(req),
 					HWRM_CMD_TIMEOUT);
-		if (rc) {
-			rc = -ENOMEM;
+		if (rc)
 			break;
-		}
 		pf->active_vfs = i + 1;
 		pf->vf[i].fw_fid = pf->first_vf_id + i;
 	}
@@ -664,8 +660,6 @@ static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 		total_vf_tx_rings += vf_tx_rsvd;
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
-	if (rc)
-		rc = -ENOMEM;
 	if (pf->active_vfs) {
 		hw_resc->max_tx_rings -= total_vf_tx_rings;
 		hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;

drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c

@@ -319,8 +319,6 @@ static int bnxt_hwrm_cfa_flow_free(struct bnxt *bp,
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -515,11 +513,6 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 		}
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
-
-	if (rc == HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR)
-		rc = -ENOSPC;
-	else if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -591,8 +584,6 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -609,8 +600,6 @@ static int hwrm_cfa_decap_filter_free(struct bnxt *bp,
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -660,8 +649,6 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -678,8 +665,6 @@ static int hwrm_cfa_encap_record_free(struct bnxt *bp,
 	if (rc)
 		netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }
 
@@ -1457,8 +1442,6 @@ bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
-	if (rc)
-		rc = -EIO;
 	return rc;
 }