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153 lines
4.1 KiB
153 lines
4.1 KiB
// 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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