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1// SPDX-License-Identifier: GPL-2.02/* Copyright(c) 2013 - 2019 Intel Corporation. */3 4#include "fm10k.h"5 6/**7 * fm10k_dcbnl_ieee_getets - get the ETS configuration for the device8 * @dev: netdev interface for the device9 * @ets: ETS structure to push configuration to10 **/11static int fm10k_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)12{13 int i;14 15 /* we support 8 TCs in all modes */16 ets->ets_cap = IEEE_8021QAZ_MAX_TCS;17 ets->cbs = 0;18 19 /* we only support strict priority and cannot do traffic shaping */20 memset(ets->tc_tx_bw, 0, sizeof(ets->tc_tx_bw));21 memset(ets->tc_rx_bw, 0, sizeof(ets->tc_rx_bw));22 memset(ets->tc_tsa, IEEE_8021QAZ_TSA_STRICT, sizeof(ets->tc_tsa));23 24 /* populate the prio map based on the netdev */25 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)26 ets->prio_tc[i] = netdev_get_prio_tc_map(dev, i);27 28 return 0;29}30 31/**32 * fm10k_dcbnl_ieee_setets - set the ETS configuration for the device33 * @dev: netdev interface for the device34 * @ets: ETS structure to pull configuration from35 **/36static int fm10k_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)37{38 u8 num_tc = 0;39 int i;40 41 /* verify type and determine num_tcs needed */42 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {43 if (ets->tc_tx_bw[i] || ets->tc_rx_bw[i])44 return -EINVAL;45 if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_STRICT)46 return -EINVAL;47 if (ets->prio_tc[i] > num_tc)48 num_tc = ets->prio_tc[i];49 }50 51 /* if requested TC is greater than 0 then num_tcs is max + 1 */52 if (num_tc)53 num_tc++;54 55 if (num_tc > IEEE_8021QAZ_MAX_TCS)56 return -EINVAL;57 58 /* update TC hardware mapping if necessary */59 if (num_tc != netdev_get_num_tc(dev)) {60 int err = fm10k_setup_tc(dev, num_tc);61 if (err)62 return err;63 }64 65 /* update priority mapping */66 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)67 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);68 69 return 0;70}71 72/**73 * fm10k_dcbnl_ieee_getpfc - get the PFC configuration for the device74 * @dev: netdev interface for the device75 * @pfc: PFC structure to push configuration to76 **/77static int fm10k_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)78{79 struct fm10k_intfc *interface = netdev_priv(dev);80 81 /* record flow control max count and state of TCs */82 pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;83 pfc->pfc_en = interface->pfc_en;84 85 return 0;86}87 88/**89 * fm10k_dcbnl_ieee_setpfc - set the PFC configuration for the device90 * @dev: netdev interface for the device91 * @pfc: PFC structure to pull configuration from92 **/93static int fm10k_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)94{95 struct fm10k_intfc *interface = netdev_priv(dev);96 97 /* record PFC configuration to interface */98 interface->pfc_en = pfc->pfc_en;99 100 /* if we are running update the drop_en state for all queues */101 if (netif_running(dev))102 fm10k_update_rx_drop_en(interface);103 104 return 0;105}106 107/**108 * fm10k_dcbnl_getdcbx - get the DCBX configuration for the device109 * @dev: netdev interface for the device110 *111 * Returns that we support only IEEE DCB for this interface112 **/113static u8 fm10k_dcbnl_getdcbx(struct net_device __always_unused *dev)114{115 return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;116}117 118/**119 * fm10k_dcbnl_setdcbx - get the DCBX configuration for the device120 * @dev: netdev interface for the device121 * @mode: new mode for this device122 *123 * Returns error on attempt to enable anything but IEEE DCB for this interface124 **/125static u8 fm10k_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)126{127 return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;128}129 130static const struct dcbnl_rtnl_ops fm10k_dcbnl_ops = {131 .ieee_getets = fm10k_dcbnl_ieee_getets,132 .ieee_setets = fm10k_dcbnl_ieee_setets,133 .ieee_getpfc = fm10k_dcbnl_ieee_getpfc,134 .ieee_setpfc = fm10k_dcbnl_ieee_setpfc,135 136 .getdcbx = fm10k_dcbnl_getdcbx,137 .setdcbx = fm10k_dcbnl_setdcbx,138};139 140/**141 * fm10k_dcbnl_set_ops - Configures dcbnl ops pointer for netdev142 * @dev: netdev interface for the device143 *144 * Enables PF for DCB by assigning DCBNL ops pointer.145 **/146void fm10k_dcbnl_set_ops(struct net_device *dev)147{148 struct fm10k_intfc *interface = netdev_priv(dev);149 struct fm10k_hw *hw = &interface->hw;150 151 if (hw->mac.type == fm10k_mac_pf)152 dev->dcbnl_ops = &fm10k_dcbnl_ops;153}154