154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2013 - 2019 Intel Corporation. */
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#include "fm10k.h"
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/**
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* fm10k_dcbnl_ieee_getets - get the ETS configuration for the device
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* @dev: netdev interface for the device
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* @ets: ETS structure to push configuration to
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**/
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static int fm10k_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
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{
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int i;
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/* we support 8 TCs in all modes */
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ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
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ets->cbs = 0;
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/* we only support strict priority and cannot do traffic shaping */
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memset(ets->tc_tx_bw, 0, sizeof(ets->tc_tx_bw));
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memset(ets->tc_rx_bw, 0, sizeof(ets->tc_rx_bw));
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memset(ets->tc_tsa, IEEE_8021QAZ_TSA_STRICT, sizeof(ets->tc_tsa));
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/* populate the prio map based on the netdev */
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
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ets->prio_tc[i] = netdev_get_prio_tc_map(dev, i);
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return 0;
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}
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/**
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* fm10k_dcbnl_ieee_setets - set the ETS configuration for the device
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* @dev: netdev interface for the device
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* @ets: ETS structure to pull configuration from
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**/
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static int fm10k_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
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{
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u8 num_tc = 0;
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int i;
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/* verify type and determine num_tcs needed */
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
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if (ets->tc_tx_bw[i] || ets->tc_rx_bw[i])
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return -EINVAL;
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if (ets->tc_tsa[i] != IEEE_8021QAZ_TSA_STRICT)
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return -EINVAL;
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if (ets->prio_tc[i] > num_tc)
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num_tc = ets->prio_tc[i];
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}
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/* if requested TC is greater than 0 then num_tcs is max + 1 */
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if (num_tc)
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num_tc++;
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if (num_tc > IEEE_8021QAZ_MAX_TCS)
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return -EINVAL;
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/* update TC hardware mapping if necessary */
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if (num_tc != netdev_get_num_tc(dev)) {
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int err = fm10k_setup_tc(dev, num_tc);
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if (err)
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return err;
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}
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/* update priority mapping */
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for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
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netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
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return 0;
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}
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/**
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* fm10k_dcbnl_ieee_getpfc - get the PFC configuration for the device
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* @dev: netdev interface for the device
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* @pfc: PFC structure to push configuration to
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**/
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static int fm10k_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
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{
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struct fm10k_intfc *interface = netdev_priv(dev);
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/* record flow control max count and state of TCs */
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pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
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pfc->pfc_en = interface->pfc_en;
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return 0;
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}
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/**
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* fm10k_dcbnl_ieee_setpfc - set the PFC configuration for the device
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* @dev: netdev interface for the device
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* @pfc: PFC structure to pull configuration from
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**/
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static int fm10k_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
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{
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struct fm10k_intfc *interface = netdev_priv(dev);
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/* record PFC configuration to interface */
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interface->pfc_en = pfc->pfc_en;
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/* if we are running update the drop_en state for all queues */
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if (netif_running(dev))
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fm10k_update_rx_drop_en(interface);
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return 0;
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}
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/**
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* fm10k_dcbnl_getdcbx - get the DCBX configuration for the device
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* @dev: netdev interface for the device
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*
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* Returns that we support only IEEE DCB for this interface
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**/
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static u8 fm10k_dcbnl_getdcbx(struct net_device __always_unused *dev)
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{
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return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
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}
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/**
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* fm10k_dcbnl_setdcbx - get the DCBX configuration for the device
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* @dev: netdev interface for the device
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* @mode: new mode for this device
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*
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* Returns error on attempt to enable anything but IEEE DCB for this interface
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**/
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static u8 fm10k_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)
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{
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return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
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}
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static const struct dcbnl_rtnl_ops fm10k_dcbnl_ops = {
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.ieee_getets = fm10k_dcbnl_ieee_getets,
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.ieee_setets = fm10k_dcbnl_ieee_setets,
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.ieee_getpfc = fm10k_dcbnl_ieee_getpfc,
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.ieee_setpfc = fm10k_dcbnl_ieee_setpfc,
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.getdcbx = fm10k_dcbnl_getdcbx,
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.setdcbx = fm10k_dcbnl_setdcbx,
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};
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/**
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* fm10k_dcbnl_set_ops - Configures dcbnl ops pointer for netdev
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* @dev: netdev interface for the device
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*
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* Enables PF for DCB by assigning DCBNL ops pointer.
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**/
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void fm10k_dcbnl_set_ops(struct net_device *dev)
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{
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struct fm10k_intfc *interface = netdev_priv(dev);
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struct fm10k_hw *hw = &interface->hw;
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if (hw->mac.type == fm10k_mac_pf)
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dev->dcbnl_ops = &fm10k_dcbnl_ops;
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}
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