5:05 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 6553715b6db5ff5d4898895dad1b2926cfe406cf
commit: 4b208eaa8078113ed3f6ba7ecad1ac0a2bad4608 [9824/11526] i40e: Add init and default
config of software based DCB
config: parisc-randconfig-m031-20210216 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
New smatch warnings:
drivers/net/ethernet/intel/i40e/i40e_main.c:6715 i40e_hw_dcb_config() warn: inconsistent
indenting
drivers/net/ethernet/intel/i40e/i40e_main.c:10522 i40e_rebuild() warn: inconsistent
indenting
Old smatch warnings:
arch/parisc/include/asm/hash.h:44 __hash_32() warn: inconsistent indenting
drivers/net/ethernet/intel/i40e/i40e_main.c:2563 i40e_sync_vsi_filters() error: we
previously assumed 'vsi->netdev' could be null (see line 2315)
drivers/net/ethernet/intel/i40e/i40e_main.c:15078 i40e_init_recovery_mode() warn: missing
error code 'err'
vim +6715 drivers/net/ethernet/intel/i40e/i40e_main.c
6547
6548 /**
6549 * i40e_hw_dcb_config - Program new DCBX settings into HW
6550 * @pf: PF being configured
6551 * @new_cfg: New DCBX configuration
6552 *
6553 * Program DCB settings into HW and reconfigure VEB/VSIs on
6554 * given PF
6555 **/
6556 int i40e_hw_dcb_config(struct i40e_pf *pf, struct i40e_dcbx_config *new_cfg)
6557 {
6558 struct i40e_aqc_configure_switching_comp_ets_data ets_data;
6559 u8 prio_type[I40E_MAX_TRAFFIC_CLASS] = {0};
6560 u32 mfs_tc[I40E_MAX_TRAFFIC_CLASS];
6561 struct i40e_dcbx_config *old_cfg;
6562 u8 mode[I40E_MAX_TRAFFIC_CLASS];
6563 struct i40e_rx_pb_config pb_cfg;
6564 struct i40e_hw *hw = &pf->hw;
6565 u8 num_ports = hw->num_ports;
6566 bool need_reconfig;
6567 int ret = -EINVAL;
6568 u8 lltc_map = 0;
6569 u8 tc_map = 0;
6570 u8 new_numtc;
6571 u8 i;
6572
6573 dev_dbg(&pf->pdev->dev, "Configuring DCB registers
directly\n");
6574 /* Un-pack information to Program ETS HW via shared API
6575 * numtc, tcmap
6576 * LLTC map
6577 * ETS/NON-ETS arbiter mode
6578 * max exponent (credit refills)
6579 * Total number of ports
6580 * PFC priority bit-map
6581 * Priority Table
6582 * BW % per TC
6583 * Arbiter mode between UPs sharing same TC
6584 * TSA table (ETS or non-ETS)
6585 * EEE enabled or not
6586 * MFS TC table
6587 */
6588
6589 new_numtc = i40e_dcb_get_num_tc(new_cfg);
6590
6591 memset(&ets_data, 0, sizeof(ets_data));
6592 for (i = 0; i < new_numtc; i++) {
6593 tc_map |= BIT(i);
6594 switch (new_cfg->etscfg.tsatable[i]) {
6595 case I40E_IEEE_TSA_ETS:
6596 prio_type[i] = I40E_DCB_PRIO_TYPE_ETS;
6597 ets_data.tc_bw_share_credits[i] =
6598 new_cfg->etscfg.tcbwtable[i];
6599 break;
6600 case I40E_IEEE_TSA_STRICT:
6601 prio_type[i] = I40E_DCB_PRIO_TYPE_STRICT;
6602 lltc_map |= BIT(i);
6603 ets_data.tc_bw_share_credits[i] =
6604 I40E_DCB_STRICT_PRIO_CREDITS;
6605 break;
6606 default:
6607 /* Invalid TSA type */
6608 need_reconfig = false;
6609 goto out;
6610 }
6611 }
6612
6613 old_cfg = &hw->local_dcbx_config;
6614 /* Check if need reconfiguration */
6615 need_reconfig = i40e_dcb_need_reconfig(pf, old_cfg, new_cfg);
6616
6617 /* If needed, enable/disable frame tagging, disable all VSIs
6618 * and suspend port tx
6619 */
6620 if (need_reconfig) {
6621 /* Enable DCB tagging only when more than one TC */
6622 if (new_numtc > 1)
6623 pf->flags |= I40E_FLAG_DCB_ENABLED;
6624 else
6625 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6626
6627 set_bit(__I40E_PORT_SUSPENDED, pf->state);
6628 /* Reconfiguration needed quiesce all VSIs */
6629 i40e_pf_quiesce_all_vsi(pf);
6630 ret = i40e_suspend_port_tx(pf);
6631 if (ret)
6632 goto err;
6633 }
6634
6635 /* Configure Port ETS Tx Scheduler */
6636 ets_data.tc_valid_bits = tc_map;
6637 ets_data.tc_strict_priority_flags = lltc_map;
6638 ret = i40e_aq_config_switch_comp_ets
6639 (hw, pf->mac_seid, &ets_data,
6640 i40e_aqc_opc_modify_switching_comp_ets, NULL);
6641 if (ret) {
6642 dev_info(&pf->pdev->dev,
6643 "Modify Port ETS failed, err %s aq_err %s\n",
6644 i40e_stat_str(&pf->hw, ret),
6645 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6646 goto out;
6647 }
6648
6649 /* Configure Rx ETS HW */
6650 memset(&mode, I40E_DCB_ARB_MODE_ROUND_ROBIN, sizeof(mode));
6651 i40e_dcb_hw_set_num_tc(hw, new_numtc);
6652 i40e_dcb_hw_rx_fifo_config(hw, I40E_DCB_ARB_MODE_ROUND_ROBIN,
6653 I40E_DCB_ARB_MODE_STRICT_PRIORITY,
6654 I40E_DCB_DEFAULT_MAX_EXPONENT,
6655 lltc_map);
6656 i40e_dcb_hw_rx_cmd_monitor_config(hw, new_numtc, num_ports);
6657 i40e_dcb_hw_rx_ets_bw_config(hw, new_cfg->etscfg.tcbwtable, mode,
6658 prio_type);
6659 i40e_dcb_hw_pfc_config(hw, new_cfg->pfc.pfcenable,
6660 new_cfg->etscfg.prioritytable);
6661 i40e_dcb_hw_rx_up2tc_config(hw, new_cfg->etscfg.prioritytable);
6662
6663 /* Configure Rx Packet Buffers in HW */
6664 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6665 mfs_tc[i] = pf->vsi[pf->lan_vsi]->netdev->mtu;
6666 mfs_tc[i] += I40E_PACKET_HDR_PAD;
6667 }
6668
6669 i40e_dcb_hw_calculate_pool_sizes(hw, num_ports,
6670 false, new_cfg->pfc.pfcenable,
6671 mfs_tc, &pb_cfg);
6672 i40e_dcb_hw_rx_pb_config(hw, &pf->pb_cfg, &pb_cfg);
6673
6674 /* Update the local Rx Packet buffer config */
6675 pf->pb_cfg = pb_cfg;
6676
6677 /* Inform the FW about changes to DCB configuration */
6678 ret = i40e_aq_dcb_updated(&pf->hw, NULL);
6679 if (ret) {
6680 dev_info(&pf->pdev->dev,
6681 "DCB Updated failed, err %s aq_err %s\n",
6682 i40e_stat_str(&pf->hw, ret),
6683 i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6684 goto out;
6685 }
6686
6687 /* Update the port DCBx configuration */
6688 *old_cfg = *new_cfg;
6689
6690 /* Changes in configuration update VEB/VSI */
6691 i40e_dcb_reconfigure(pf);
6692 out:
6693 /* Re-start the VSIs if disabled */
6694 if (need_reconfig) {
6695 ret = i40e_resume_port_tx(pf);
6696
6697 clear_bit(__I40E_PORT_SUSPENDED, pf->state);
6698 /* In case of error no point in resuming VSIs */
6699 if (ret)
6700 goto err;
6701
6702 /* Wait for the PF's queues to be disabled */
6703 ret = i40e_pf_wait_queues_disabled(pf);
6704 if (ret) {
6705 /* Schedule PF reset to recover */
6706 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6707 i40e_service_event_schedule(pf);
6708 goto err;
6709 } else {
6710 i40e_pf_unquiesce_all_vsi(pf);
6711 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
6712 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
6713 }
6714 /* registers are set, lets apply */
6715 if (pf->hw_features & I40E_HW_USE_SET_LLDP_MIB)
6716 ret = i40e_hw_set_dcb_config(pf, new_cfg);
6717 }
6718
6719 err:
6720 return ret;
6721 }
6722
---
0-DAY CI Kernel Test Service, Intel Corporation
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