1097 lines
28 KiB
C
1097 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019, Intel Corporation. */
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#include "ice.h"
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#include "ice_dcb.h"
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#include "ice_dcb_lib.h"
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#include "ice_dcb_nl.h"
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#include <net/dcbnl.h>
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/**
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* ice_dcbnl_devreset - perform enough of a ifdown/ifup to sync DCBNL info
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* @netdev: device associated with interface that needs reset
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*/
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static void ice_dcbnl_devreset(struct net_device *netdev)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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while (ice_is_reset_in_progress(pf->state))
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usleep_range(1000, 2000);
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dev_close(netdev);
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netdev_state_change(netdev);
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dev_open(netdev, NULL);
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netdev_state_change(netdev);
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}
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/**
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* ice_dcbnl_getets - retrieve local ETS configuration
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* @netdev: the relevant netdev
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* @ets: struct to hold ETS configuration
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*/
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static int ice_dcbnl_getets(struct net_device *netdev, struct ieee_ets *ets)
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{
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struct ice_dcbx_cfg *dcbxcfg;
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struct ice_pf *pf;
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pf = ice_netdev_to_pf(netdev);
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dcbxcfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;
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ets->willing = dcbxcfg->etscfg.willing;
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ets->ets_cap = dcbxcfg->etscfg.maxtcs;
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ets->cbs = dcbxcfg->etscfg.cbs;
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memcpy(ets->tc_tx_bw, dcbxcfg->etscfg.tcbwtable, sizeof(ets->tc_tx_bw));
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memcpy(ets->tc_rx_bw, dcbxcfg->etscfg.tcbwtable, sizeof(ets->tc_rx_bw));
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memcpy(ets->tc_tsa, dcbxcfg->etscfg.tsatable, sizeof(ets->tc_tsa));
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memcpy(ets->prio_tc, dcbxcfg->etscfg.prio_table, sizeof(ets->prio_tc));
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memcpy(ets->tc_reco_bw, dcbxcfg->etsrec.tcbwtable,
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sizeof(ets->tc_reco_bw));
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memcpy(ets->tc_reco_tsa, dcbxcfg->etsrec.tsatable,
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sizeof(ets->tc_reco_tsa));
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memcpy(ets->reco_prio_tc, dcbxcfg->etscfg.prio_table,
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sizeof(ets->reco_prio_tc));
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return 0;
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}
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/**
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* ice_dcbnl_setets - set IEEE ETS configuration
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* @netdev: pointer to relevant netdev
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* @ets: struct to hold ETS configuration
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*/
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static int ice_dcbnl_setets(struct net_device *netdev, struct ieee_ets *ets)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_dcbx_cfg *new_cfg;
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int bwcfg = 0, bwrec = 0;
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int err, i;
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
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return -EINVAL;
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new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
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mutex_lock(&pf->tc_mutex);
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new_cfg->etscfg.willing = ets->willing;
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new_cfg->etscfg.cbs = ets->cbs;
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ice_for_each_traffic_class(i) {
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new_cfg->etscfg.tcbwtable[i] = ets->tc_tx_bw[i];
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bwcfg += ets->tc_tx_bw[i];
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new_cfg->etscfg.tsatable[i] = ets->tc_tsa[i];
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if (new_cfg->pfc_mode == ICE_QOS_MODE_VLAN) {
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/* in DSCP mode up->tc mapping cannot change */
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new_cfg->etscfg.prio_table[i] = ets->prio_tc[i];
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new_cfg->etsrec.prio_table[i] = ets->reco_prio_tc[i];
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}
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new_cfg->etsrec.tcbwtable[i] = ets->tc_reco_bw[i];
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bwrec += ets->tc_reco_bw[i];
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new_cfg->etsrec.tsatable[i] = ets->tc_reco_tsa[i];
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}
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if (ice_dcb_bwchk(pf, new_cfg)) {
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err = -EINVAL;
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goto ets_out;
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}
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new_cfg->etscfg.maxtcs = pf->hw.func_caps.common_cap.maxtc;
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if (!bwcfg)
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new_cfg->etscfg.tcbwtable[0] = 100;
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if (!bwrec)
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new_cfg->etsrec.tcbwtable[0] = 100;
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err = ice_pf_dcb_cfg(pf, new_cfg, true);
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/* return of zero indicates new cfg applied */
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if (err == ICE_DCB_HW_CHG_RST)
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ice_dcbnl_devreset(netdev);
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if (err == ICE_DCB_NO_HW_CHG)
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err = ICE_DCB_HW_CHG_RST;
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ets_out:
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mutex_unlock(&pf->tc_mutex);
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return err;
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}
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/**
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* ice_dcbnl_getnumtcs - Get max number of traffic classes supported
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* @dev: pointer to netdev struct
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* @tcid: TC ID
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* @num: total number of TCs supported by the adapter
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*
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* Return the total number of TCs supported
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*/
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static int
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ice_dcbnl_getnumtcs(struct net_device *dev, int __always_unused tcid, u8 *num)
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{
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struct ice_pf *pf = ice_netdev_to_pf(dev);
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if (!test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))
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return -EINVAL;
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*num = pf->hw.func_caps.common_cap.maxtc;
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return 0;
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}
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/**
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* ice_dcbnl_getdcbx - retrieve current DCBX capability
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* @netdev: pointer to the netdev struct
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*/
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static u8 ice_dcbnl_getdcbx(struct net_device *netdev)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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return pf->dcbx_cap;
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}
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/**
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* ice_dcbnl_setdcbx - set required DCBX capability
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* @netdev: the corresponding netdev
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* @mode: required mode
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*/
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static u8 ice_dcbnl_setdcbx(struct net_device *netdev, u8 mode)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_qos_cfg *qos_cfg;
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/* if FW LLDP agent is running, DCBNL not allowed to change mode */
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if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags))
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return ICE_DCB_NO_HW_CHG;
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/* No support for LLD_MANAGED modes or CEE+IEEE */
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if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
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((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
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!(mode & DCB_CAP_DCBX_HOST))
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return ICE_DCB_NO_HW_CHG;
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/* Already set to the given mode no change */
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if (mode == pf->dcbx_cap)
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return ICE_DCB_NO_HW_CHG;
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qos_cfg = &pf->hw.port_info->qos_cfg;
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/* DSCP configuration is not DCBx negotiated */
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if (qos_cfg->local_dcbx_cfg.pfc_mode == ICE_QOS_MODE_DSCP)
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return ICE_DCB_NO_HW_CHG;
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pf->dcbx_cap = mode;
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if (mode & DCB_CAP_DCBX_VER_CEE)
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qos_cfg->local_dcbx_cfg.dcbx_mode = ICE_DCBX_MODE_CEE;
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else
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qos_cfg->local_dcbx_cfg.dcbx_mode = ICE_DCBX_MODE_IEEE;
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dev_info(ice_pf_to_dev(pf), "DCBx mode = 0x%x\n", mode);
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return ICE_DCB_HW_CHG_RST;
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}
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/**
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* ice_dcbnl_get_perm_hw_addr - MAC address used by DCBX
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* @netdev: pointer to netdev struct
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* @perm_addr: buffer to return permanent MAC address
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*/
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static void ice_dcbnl_get_perm_hw_addr(struct net_device *netdev, u8 *perm_addr)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_port_info *pi = pf->hw.port_info;
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int i, j;
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memset(perm_addr, 0xff, MAX_ADDR_LEN);
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for (i = 0; i < netdev->addr_len; i++)
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perm_addr[i] = pi->mac.perm_addr[i];
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for (j = 0; j < netdev->addr_len; j++, i++)
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perm_addr[i] = pi->mac.perm_addr[j];
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}
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/**
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* ice_get_pfc_delay - Retrieve PFC Link Delay
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* @hw: pointer to HW struct
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* @delay: holds the PFC Link Delay value
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*/
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static void ice_get_pfc_delay(struct ice_hw *hw, u16 *delay)
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{
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u32 val;
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val = rd32(hw, PRTDCB_GENC);
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*delay = (u16)((val & PRTDCB_GENC_PFCLDA_M) >> PRTDCB_GENC_PFCLDA_S);
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}
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/**
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* ice_dcbnl_getpfc - retrieve local IEEE PFC config
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* @netdev: pointer to netdev struct
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* @pfc: struct to hold PFC info
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*/
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static int ice_dcbnl_getpfc(struct net_device *netdev, struct ieee_pfc *pfc)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_port_info *pi = pf->hw.port_info;
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struct ice_dcbx_cfg *dcbxcfg;
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int i;
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dcbxcfg = &pi->qos_cfg.local_dcbx_cfg;
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pfc->pfc_cap = dcbxcfg->pfc.pfccap;
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pfc->pfc_en = dcbxcfg->pfc.pfcena;
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pfc->mbc = dcbxcfg->pfc.mbc;
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ice_get_pfc_delay(&pf->hw, &pfc->delay);
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ice_for_each_traffic_class(i) {
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pfc->requests[i] = pf->stats.priority_xoff_tx[i];
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pfc->indications[i] = pf->stats.priority_xoff_rx[i];
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}
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return 0;
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}
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/**
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* ice_dcbnl_setpfc - set local IEEE PFC config
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* @netdev: pointer to relevant netdev
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* @pfc: pointer to struct holding PFC config
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*/
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static int ice_dcbnl_setpfc(struct net_device *netdev, struct ieee_pfc *pfc)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_dcbx_cfg *new_cfg;
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int err;
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
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return -EINVAL;
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mutex_lock(&pf->tc_mutex);
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new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
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if (pfc->pfc_cap)
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new_cfg->pfc.pfccap = pfc->pfc_cap;
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else
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new_cfg->pfc.pfccap = pf->hw.func_caps.common_cap.maxtc;
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new_cfg->pfc.pfcena = pfc->pfc_en;
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err = ice_pf_dcb_cfg(pf, new_cfg, true);
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if (err == ICE_DCB_HW_CHG_RST)
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ice_dcbnl_devreset(netdev);
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if (err == ICE_DCB_NO_HW_CHG)
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err = ICE_DCB_HW_CHG_RST;
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mutex_unlock(&pf->tc_mutex);
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return err;
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}
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/**
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* ice_dcbnl_get_pfc_cfg - Get CEE PFC config
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* @netdev: pointer to netdev struct
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* @prio: corresponding user priority
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* @setting: the PFC setting for given priority
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*/
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static void
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ice_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio, u8 *setting)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_port_info *pi = pf->hw.port_info;
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
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return;
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if (prio >= ICE_MAX_USER_PRIORITY)
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return;
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*setting = (pi->qos_cfg.local_dcbx_cfg.pfc.pfcena >> prio) & 0x1;
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dev_dbg(ice_pf_to_dev(pf), "Get PFC Config up=%d, setting=%d, pfcenable=0x%x\n",
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prio, *setting, pi->qos_cfg.local_dcbx_cfg.pfc.pfcena);
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}
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/**
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* ice_dcbnl_set_pfc_cfg - Set CEE PFC config
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* @netdev: the corresponding netdev
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* @prio: User Priority
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* @set: PFC setting to apply
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*/
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static void ice_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio, u8 set)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_dcbx_cfg *new_cfg;
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
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return;
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if (prio >= ICE_MAX_USER_PRIORITY)
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return;
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new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
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new_cfg->pfc.pfccap = pf->hw.func_caps.common_cap.maxtc;
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if (set)
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new_cfg->pfc.pfcena |= BIT(prio);
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else
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new_cfg->pfc.pfcena &= ~BIT(prio);
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dev_dbg(ice_pf_to_dev(pf), "Set PFC config UP:%d set:%d pfcena:0x%x\n",
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prio, set, new_cfg->pfc.pfcena);
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}
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/**
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* ice_dcbnl_getpfcstate - get CEE PFC mode
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* @netdev: pointer to netdev struct
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*/
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static u8 ice_dcbnl_getpfcstate(struct net_device *netdev)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_port_info *pi = pf->hw.port_info;
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/* Return enabled if any UP enabled for PFC */
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if (pi->qos_cfg.local_dcbx_cfg.pfc.pfcena)
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return 1;
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return 0;
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}
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/**
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* ice_dcbnl_getstate - get DCB enabled state
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* @netdev: pointer to netdev struct
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*/
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static u8 ice_dcbnl_getstate(struct net_device *netdev)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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u8 state = 0;
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state = test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
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dev_dbg(ice_pf_to_dev(pf), "DCB enabled state = %d\n", state);
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return state;
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}
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/**
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* ice_dcbnl_setstate - Set CEE DCB state
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* @netdev: pointer to relevant netdev
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* @state: state value to set
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*/
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static u8 ice_dcbnl_setstate(struct net_device *netdev, u8 state)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
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return ICE_DCB_NO_HW_CHG;
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/* Nothing to do */
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if (!!state == test_bit(ICE_FLAG_DCB_ENA, pf->flags))
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return ICE_DCB_NO_HW_CHG;
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if (state) {
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set_bit(ICE_FLAG_DCB_ENA, pf->flags);
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memcpy(&pf->hw.port_info->qos_cfg.desired_dcbx_cfg,
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&pf->hw.port_info->qos_cfg.local_dcbx_cfg,
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sizeof(struct ice_dcbx_cfg));
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} else {
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clear_bit(ICE_FLAG_DCB_ENA, pf->flags);
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}
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return ICE_DCB_HW_CHG;
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}
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/**
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* ice_dcbnl_get_pg_tc_cfg_tx - get CEE PG Tx config
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* @netdev: pointer to netdev struct
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* @prio: the corresponding user priority
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* @prio_type: traffic priority type
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* @pgid: the BW group ID the traffic class belongs to
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* @bw_pct: BW percentage for the corresponding BWG
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* @up_map: prio mapped to corresponding TC
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*/
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static void
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ice_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int prio,
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u8 __always_unused *prio_type, u8 *pgid,
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u8 __always_unused *bw_pct,
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u8 __always_unused *up_map)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
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struct ice_port_info *pi = pf->hw.port_info;
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if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
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!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
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return;
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if (prio >= ICE_MAX_USER_PRIORITY)
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return;
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*pgid = pi->qos_cfg.local_dcbx_cfg.etscfg.prio_table[prio];
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dev_dbg(ice_pf_to_dev(pf), "Get PG config prio=%d tc=%d\n", prio,
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*pgid);
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}
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/**
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* ice_dcbnl_set_pg_tc_cfg_tx - set CEE PG Tx config
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* @netdev: pointer to relevant netdev
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* @tc: the corresponding traffic class
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* @prio_type: the traffic priority type
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* @bwg_id: the BW group ID the TC belongs to
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* @bw_pct: the BW perventage for the BWG
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* @up_map: prio mapped to corresponding TC
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*/
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static void
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ice_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
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u8 __always_unused prio_type,
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u8 __always_unused bwg_id,
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u8 __always_unused bw_pct, u8 up_map)
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{
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struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_dcbx_cfg *new_cfg;
|
|
int i;
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return;
|
|
|
|
if (tc >= ICE_MAX_TRAFFIC_CLASS)
|
|
return;
|
|
|
|
new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
|
|
|
|
/* prio_type, bwg_id and bw_pct per UP are not supported */
|
|
|
|
ice_for_each_traffic_class(i) {
|
|
if (up_map & BIT(i))
|
|
new_cfg->etscfg.prio_table[i] = tc;
|
|
}
|
|
new_cfg->etscfg.tsatable[tc] = ICE_IEEE_TSA_ETS;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_get_pg_bwg_cfg_tx - Get CEE PGBW config
|
|
* @netdev: pointer to the netdev struct
|
|
* @pgid: corresponding traffic class
|
|
* @bw_pct: the BW percentage for the corresponding TC
|
|
*/
|
|
static void
|
|
ice_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int pgid, u8 *bw_pct)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_port_info *pi = pf->hw.port_info;
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return;
|
|
|
|
if (pgid >= ICE_MAX_TRAFFIC_CLASS)
|
|
return;
|
|
|
|
*bw_pct = pi->qos_cfg.local_dcbx_cfg.etscfg.tcbwtable[pgid];
|
|
dev_dbg(ice_pf_to_dev(pf), "Get PG BW config tc=%d bw_pct=%d\n",
|
|
pgid, *bw_pct);
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_set_pg_bwg_cfg_tx - set CEE PG Tx BW config
|
|
* @netdev: the corresponding netdev
|
|
* @pgid: Correspongind traffic class
|
|
* @bw_pct: the BW percentage for the specified TC
|
|
*/
|
|
static void
|
|
ice_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int pgid, u8 bw_pct)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_dcbx_cfg *new_cfg;
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return;
|
|
|
|
if (pgid >= ICE_MAX_TRAFFIC_CLASS)
|
|
return;
|
|
|
|
new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
|
|
|
|
new_cfg->etscfg.tcbwtable[pgid] = bw_pct;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_get_pg_tc_cfg_rx - Get CEE PG Rx config
|
|
* @netdev: pointer to netdev struct
|
|
* @prio: the corresponding user priority
|
|
* @prio_type: the traffic priority type
|
|
* @pgid: the PG ID
|
|
* @bw_pct: the BW percentage for the corresponding BWG
|
|
* @up_map: prio mapped to corresponding TC
|
|
*/
|
|
static void
|
|
ice_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int prio,
|
|
u8 __always_unused *prio_type, u8 *pgid,
|
|
u8 __always_unused *bw_pct,
|
|
u8 __always_unused *up_map)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_port_info *pi = pf->hw.port_info;
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return;
|
|
|
|
if (prio >= ICE_MAX_USER_PRIORITY)
|
|
return;
|
|
|
|
*pgid = pi->qos_cfg.local_dcbx_cfg.etscfg.prio_table[prio];
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_set_pg_tc_cfg_rx
|
|
* @netdev: relevant netdev struct
|
|
* @prio: corresponding user priority
|
|
* @prio_type: the traffic priority type
|
|
* @pgid: the PG ID
|
|
* @bw_pct: BW percentage for corresponding BWG
|
|
* @up_map: prio mapped to corresponding TC
|
|
*
|
|
* lldpad requires this function pointer to be non-NULL to complete CEE config.
|
|
*/
|
|
static void
|
|
ice_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev,
|
|
int __always_unused prio,
|
|
u8 __always_unused prio_type,
|
|
u8 __always_unused pgid,
|
|
u8 __always_unused bw_pct,
|
|
u8 __always_unused up_map)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
|
|
dev_dbg(ice_pf_to_dev(pf), "Rx TC PG Config Not Supported.\n");
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_get_pg_bwg_cfg_rx - Get CEE PG BW Rx config
|
|
* @netdev: pointer to netdev struct
|
|
* @pgid: the corresponding traffic class
|
|
* @bw_pct: the BW percentage for the corresponding TC
|
|
*/
|
|
static void
|
|
ice_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int __always_unused pgid,
|
|
u8 *bw_pct)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return;
|
|
|
|
*bw_pct = 0;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_set_pg_bwg_cfg_rx
|
|
* @netdev: the corresponding netdev
|
|
* @pgid: corresponding TC
|
|
* @bw_pct: BW percentage for given TC
|
|
*
|
|
* lldpad requires this function pointer to be non-NULL to complete CEE config.
|
|
*/
|
|
static void
|
|
ice_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int __always_unused pgid,
|
|
u8 __always_unused bw_pct)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
|
|
dev_dbg(ice_pf_to_dev(pf), "Rx BWG PG Config Not Supported.\n");
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_get_cap - Get DCBX capabilities of adapter
|
|
* @netdev: pointer to netdev struct
|
|
* @capid: the capability type
|
|
* @cap: the capability value
|
|
*/
|
|
static u8 ice_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
|
|
if (!(test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags)))
|
|
return ICE_DCB_NO_HW_CHG;
|
|
|
|
switch (capid) {
|
|
case DCB_CAP_ATTR_PG:
|
|
*cap = true;
|
|
break;
|
|
case DCB_CAP_ATTR_PFC:
|
|
*cap = true;
|
|
break;
|
|
case DCB_CAP_ATTR_UP2TC:
|
|
*cap = false;
|
|
break;
|
|
case DCB_CAP_ATTR_PG_TCS:
|
|
*cap = 0x80;
|
|
break;
|
|
case DCB_CAP_ATTR_PFC_TCS:
|
|
*cap = 0x80;
|
|
break;
|
|
case DCB_CAP_ATTR_GSP:
|
|
*cap = false;
|
|
break;
|
|
case DCB_CAP_ATTR_BCN:
|
|
*cap = false;
|
|
break;
|
|
case DCB_CAP_ATTR_DCBX:
|
|
*cap = pf->dcbx_cap;
|
|
break;
|
|
default:
|
|
*cap = false;
|
|
break;
|
|
}
|
|
|
|
dev_dbg(ice_pf_to_dev(pf), "DCBX Get Capability cap=%d capval=0x%x\n",
|
|
capid, *cap);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_getapp - get CEE APP
|
|
* @netdev: pointer to netdev struct
|
|
* @idtype: the App selector
|
|
* @id: the App ethtype or port number
|
|
*/
|
|
static int ice_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct dcb_app app = {
|
|
.selector = idtype,
|
|
.protocol = id,
|
|
};
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return -EINVAL;
|
|
|
|
return dcb_getapp(netdev, &app);
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_find_app - Search for APP in given DCB config
|
|
* @cfg: struct to hold DCBX config
|
|
* @app: struct to hold app data to look for
|
|
*/
|
|
static bool
|
|
ice_dcbnl_find_app(struct ice_dcbx_cfg *cfg,
|
|
struct ice_dcb_app_priority_table *app)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < cfg->numapps; i++) {
|
|
if (app->selector == cfg->app[i].selector &&
|
|
app->prot_id == cfg->app[i].prot_id &&
|
|
app->priority == cfg->app[i].priority)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
#define ICE_BYTES_PER_DSCP_VAL 8
|
|
|
|
/**
|
|
* ice_dcbnl_setapp - set local IEEE App config
|
|
* @netdev: relevant netdev struct
|
|
* @app: struct to hold app config info
|
|
*/
|
|
static int ice_dcbnl_setapp(struct net_device *netdev, struct dcb_app *app)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_dcb_app_priority_table new_app;
|
|
struct ice_dcbx_cfg *old_cfg, *new_cfg;
|
|
u8 max_tc;
|
|
int ret;
|
|
|
|
/* ONLY DSCP APP TLVs have operational significance */
|
|
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP)
|
|
return -EINVAL;
|
|
|
|
/* only allow APP TLVs in SW Mode */
|
|
if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) {
|
|
netdev_err(netdev, "can't do DSCP QoS when FW DCB agent active\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
|
|
return -EINVAL;
|
|
|
|
if (!ice_is_feature_supported(pf, ICE_F_DSCP))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (app->protocol >= ICE_DSCP_NUM_VAL) {
|
|
netdev_err(netdev, "DSCP value 0x%04X out of range\n",
|
|
app->protocol);
|
|
return -EINVAL;
|
|
}
|
|
|
|
max_tc = pf->hw.func_caps.common_cap.maxtc;
|
|
if (app->priority >= max_tc) {
|
|
netdev_err(netdev, "TC %d out of range, max TC %d\n",
|
|
app->priority, max_tc);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* grab TC mutex */
|
|
mutex_lock(&pf->tc_mutex);
|
|
|
|
new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
|
|
old_cfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;
|
|
|
|
ret = dcb_ieee_setapp(netdev, app);
|
|
if (ret)
|
|
goto setapp_out;
|
|
|
|
if (test_and_set_bit(app->protocol, new_cfg->dscp_mapped)) {
|
|
netdev_err(netdev, "DSCP value 0x%04X already user mapped\n",
|
|
app->protocol);
|
|
ret = dcb_ieee_delapp(netdev, app);
|
|
if (ret)
|
|
netdev_err(netdev, "Failed to delete re-mapping TLV\n");
|
|
ret = -EINVAL;
|
|
goto setapp_out;
|
|
}
|
|
|
|
new_app.selector = app->selector;
|
|
new_app.prot_id = app->protocol;
|
|
new_app.priority = app->priority;
|
|
|
|
/* If port is not in DSCP mode, need to set */
|
|
if (old_cfg->pfc_mode == ICE_QOS_MODE_VLAN) {
|
|
int i, j;
|
|
|
|
/* set DSCP mode */
|
|
ret = ice_aq_set_pfc_mode(&pf->hw, ICE_AQC_PFC_DSCP_BASED_PFC,
|
|
NULL);
|
|
if (ret) {
|
|
netdev_err(netdev, "Failed to set DSCP PFC mode %d\n",
|
|
ret);
|
|
goto setapp_out;
|
|
}
|
|
netdev_info(netdev, "Switched QoS to L3 DSCP mode\n");
|
|
|
|
new_cfg->pfc_mode = ICE_QOS_MODE_DSCP;
|
|
|
|
/* set default DSCP QoS values */
|
|
new_cfg->etscfg.willing = 0;
|
|
new_cfg->pfc.pfccap = max_tc;
|
|
new_cfg->pfc.willing = 0;
|
|
|
|
for (i = 0; i < max_tc; i++)
|
|
for (j = 0; j < ICE_BYTES_PER_DSCP_VAL; j++) {
|
|
int dscp, offset;
|
|
|
|
dscp = (i * max_tc) + j;
|
|
offset = max_tc * ICE_BYTES_PER_DSCP_VAL;
|
|
|
|
new_cfg->dscp_map[dscp] = i;
|
|
/* if less that 8 TCs supported */
|
|
if (max_tc < ICE_MAX_TRAFFIC_CLASS)
|
|
new_cfg->dscp_map[dscp + offset] = i;
|
|
}
|
|
|
|
new_cfg->etscfg.tcbwtable[0] = 100;
|
|
new_cfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS;
|
|
new_cfg->etscfg.prio_table[0] = 0;
|
|
|
|
for (i = 1; i < max_tc; i++) {
|
|
new_cfg->etscfg.tcbwtable[i] = 0;
|
|
new_cfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
|
|
new_cfg->etscfg.prio_table[i] = i;
|
|
}
|
|
} /* end of switching to DSCP mode */
|
|
|
|
/* apply new mapping for this DSCP value */
|
|
new_cfg->dscp_map[app->protocol] = app->priority;
|
|
new_cfg->app[new_cfg->numapps++] = new_app;
|
|
|
|
ret = ice_pf_dcb_cfg(pf, new_cfg, true);
|
|
/* return of zero indicates new cfg applied */
|
|
if (ret == ICE_DCB_HW_CHG_RST)
|
|
ice_dcbnl_devreset(netdev);
|
|
else
|
|
ret = ICE_DCB_NO_HW_CHG;
|
|
|
|
setapp_out:
|
|
mutex_unlock(&pf->tc_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_delapp - Delete local IEEE App config
|
|
* @netdev: relevant netdev
|
|
* @app: struct to hold app too delete
|
|
*
|
|
* Will not delete first application required by the FW
|
|
*/
|
|
static int ice_dcbnl_delapp(struct net_device *netdev, struct dcb_app *app)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_dcbx_cfg *old_cfg, *new_cfg;
|
|
unsigned int i, j;
|
|
int ret = 0;
|
|
|
|
if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) {
|
|
netdev_err(netdev, "can't delete DSCP netlink app when FW DCB agent is active\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&pf->tc_mutex);
|
|
old_cfg = &pf->hw.port_info->qos_cfg.local_dcbx_cfg;
|
|
|
|
ret = dcb_ieee_delapp(netdev, app);
|
|
if (ret)
|
|
goto delapp_out;
|
|
|
|
new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
|
|
|
|
for (i = 0; i < new_cfg->numapps; i++) {
|
|
if (app->selector == new_cfg->app[i].selector &&
|
|
app->protocol == new_cfg->app[i].prot_id &&
|
|
app->priority == new_cfg->app[i].priority) {
|
|
new_cfg->app[i].selector = 0;
|
|
new_cfg->app[i].prot_id = 0;
|
|
new_cfg->app[i].priority = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Did not find DCB App */
|
|
if (i == new_cfg->numapps) {
|
|
ret = -EINVAL;
|
|
goto delapp_out;
|
|
}
|
|
|
|
new_cfg->numapps--;
|
|
|
|
for (j = i; j < new_cfg->numapps; j++) {
|
|
new_cfg->app[j].selector = old_cfg->app[j + 1].selector;
|
|
new_cfg->app[j].prot_id = old_cfg->app[j + 1].prot_id;
|
|
new_cfg->app[j].priority = old_cfg->app[j + 1].priority;
|
|
}
|
|
|
|
/* if not a DSCP APP TLV or DSCP is not supported, we are done */
|
|
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP ||
|
|
!ice_is_feature_supported(pf, ICE_F_DSCP)) {
|
|
ret = ICE_DCB_HW_CHG;
|
|
goto delapp_out;
|
|
}
|
|
|
|
/* if DSCP TLV, then need to address change in mapping */
|
|
clear_bit(app->protocol, new_cfg->dscp_mapped);
|
|
/* remap this DSCP value to default value */
|
|
new_cfg->dscp_map[app->protocol] = app->protocol %
|
|
ICE_BYTES_PER_DSCP_VAL;
|
|
|
|
/* if the last DSCP mapping just got deleted, need to switch
|
|
* to L2 VLAN QoS mode
|
|
*/
|
|
if (bitmap_empty(new_cfg->dscp_mapped, ICE_DSCP_NUM_VAL) &&
|
|
new_cfg->pfc_mode == ICE_QOS_MODE_DSCP) {
|
|
ret = ice_aq_set_pfc_mode(&pf->hw,
|
|
ICE_AQC_PFC_VLAN_BASED_PFC,
|
|
NULL);
|
|
if (ret) {
|
|
netdev_info(netdev, "Failed to set VLAN PFC mode %d\n",
|
|
ret);
|
|
goto delapp_out;
|
|
}
|
|
netdev_info(netdev, "Switched QoS to L2 VLAN mode\n");
|
|
|
|
new_cfg->pfc_mode = ICE_QOS_MODE_VLAN;
|
|
|
|
ret = ice_dcb_sw_dflt_cfg(pf, true, true);
|
|
} else {
|
|
ret = ice_pf_dcb_cfg(pf, new_cfg, true);
|
|
}
|
|
|
|
/* return of ICE_DCB_HW_CHG_RST indicates new cfg applied
|
|
* and reset needs to be performed
|
|
*/
|
|
if (ret == ICE_DCB_HW_CHG_RST)
|
|
ice_dcbnl_devreset(netdev);
|
|
|
|
/* if the change was not siginificant enough to actually call
|
|
* the reconfiguration flow, we still need to tell caller that
|
|
* their request was successfully handled
|
|
*/
|
|
if (ret == ICE_DCB_NO_HW_CHG)
|
|
ret = ICE_DCB_HW_CHG;
|
|
|
|
delapp_out:
|
|
mutex_unlock(&pf->tc_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_cee_set_all - Commit CEE DCB settings to HW
|
|
* @netdev: the corresponding netdev
|
|
*/
|
|
static u8 ice_dcbnl_cee_set_all(struct net_device *netdev)
|
|
{
|
|
struct ice_pf *pf = ice_netdev_to_pf(netdev);
|
|
struct ice_dcbx_cfg *new_cfg;
|
|
int err;
|
|
|
|
if ((pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) ||
|
|
!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
|
|
return ICE_DCB_NO_HW_CHG;
|
|
|
|
new_cfg = &pf->hw.port_info->qos_cfg.desired_dcbx_cfg;
|
|
|
|
mutex_lock(&pf->tc_mutex);
|
|
|
|
err = ice_pf_dcb_cfg(pf, new_cfg, true);
|
|
|
|
mutex_unlock(&pf->tc_mutex);
|
|
return (err != ICE_DCB_HW_CHG_RST) ? ICE_DCB_NO_HW_CHG : err;
|
|
}
|
|
|
|
static const struct dcbnl_rtnl_ops dcbnl_ops = {
|
|
/* IEEE 802.1Qaz std */
|
|
.ieee_getets = ice_dcbnl_getets,
|
|
.ieee_setets = ice_dcbnl_setets,
|
|
.ieee_getpfc = ice_dcbnl_getpfc,
|
|
.ieee_setpfc = ice_dcbnl_setpfc,
|
|
.ieee_setapp = ice_dcbnl_setapp,
|
|
.ieee_delapp = ice_dcbnl_delapp,
|
|
|
|
/* CEE std */
|
|
.getstate = ice_dcbnl_getstate,
|
|
.setstate = ice_dcbnl_setstate,
|
|
.getpermhwaddr = ice_dcbnl_get_perm_hw_addr,
|
|
.setpgtccfgtx = ice_dcbnl_set_pg_tc_cfg_tx,
|
|
.setpgbwgcfgtx = ice_dcbnl_set_pg_bwg_cfg_tx,
|
|
.setpgtccfgrx = ice_dcbnl_set_pg_tc_cfg_rx,
|
|
.setpgbwgcfgrx = ice_dcbnl_set_pg_bwg_cfg_rx,
|
|
.getpgtccfgtx = ice_dcbnl_get_pg_tc_cfg_tx,
|
|
.getpgbwgcfgtx = ice_dcbnl_get_pg_bwg_cfg_tx,
|
|
.getpgtccfgrx = ice_dcbnl_get_pg_tc_cfg_rx,
|
|
.getpgbwgcfgrx = ice_dcbnl_get_pg_bwg_cfg_rx,
|
|
.setpfccfg = ice_dcbnl_set_pfc_cfg,
|
|
.getpfccfg = ice_dcbnl_get_pfc_cfg,
|
|
.setall = ice_dcbnl_cee_set_all,
|
|
.getcap = ice_dcbnl_get_cap,
|
|
.getnumtcs = ice_dcbnl_getnumtcs,
|
|
.getpfcstate = ice_dcbnl_getpfcstate,
|
|
.getapp = ice_dcbnl_getapp,
|
|
|
|
/* DCBX configuration */
|
|
.getdcbx = ice_dcbnl_getdcbx,
|
|
.setdcbx = ice_dcbnl_setdcbx,
|
|
};
|
|
|
|
/**
|
|
* ice_dcbnl_set_all - set all the apps and ieee data from DCBX config
|
|
* @vsi: pointer to VSI struct
|
|
*/
|
|
void ice_dcbnl_set_all(struct ice_vsi *vsi)
|
|
{
|
|
struct net_device *netdev = vsi->netdev;
|
|
struct ice_dcbx_cfg *dcbxcfg;
|
|
struct ice_port_info *pi;
|
|
struct dcb_app sapp;
|
|
struct ice_pf *pf;
|
|
unsigned int i;
|
|
|
|
if (!netdev)
|
|
return;
|
|
|
|
pf = ice_netdev_to_pf(netdev);
|
|
pi = pf->hw.port_info;
|
|
|
|
/* SW DCB taken care of by SW Default Config */
|
|
if (pf->dcbx_cap & DCB_CAP_DCBX_HOST)
|
|
return;
|
|
|
|
/* DCB not enabled */
|
|
if (!test_bit(ICE_FLAG_DCB_ENA, pf->flags))
|
|
return;
|
|
|
|
dcbxcfg = &pi->qos_cfg.local_dcbx_cfg;
|
|
|
|
for (i = 0; i < dcbxcfg->numapps; i++) {
|
|
u8 prio, tc_map;
|
|
|
|
prio = dcbxcfg->app[i].priority;
|
|
tc_map = BIT(dcbxcfg->etscfg.prio_table[prio]);
|
|
|
|
/* Add APP only if the TC is enabled for this VSI */
|
|
if (tc_map & vsi->tc_cfg.ena_tc) {
|
|
sapp.selector = dcbxcfg->app[i].selector;
|
|
sapp.protocol = dcbxcfg->app[i].prot_id;
|
|
sapp.priority = prio;
|
|
dcb_ieee_setapp(netdev, &sapp);
|
|
}
|
|
}
|
|
/* Notify user-space of the changes */
|
|
dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_vsi_del_app - Delete APP on all VSIs
|
|
* @vsi: pointer to the main VSI
|
|
* @app: APP to delete
|
|
*
|
|
* Delete given APP from all the VSIs for given PF
|
|
*/
|
|
static void
|
|
ice_dcbnl_vsi_del_app(struct ice_vsi *vsi,
|
|
struct ice_dcb_app_priority_table *app)
|
|
{
|
|
struct dcb_app sapp;
|
|
int err;
|
|
|
|
sapp.selector = app->selector;
|
|
sapp.protocol = app->prot_id;
|
|
sapp.priority = app->priority;
|
|
err = ice_dcbnl_delapp(vsi->netdev, &sapp);
|
|
dev_dbg(ice_pf_to_dev(vsi->back), "Deleting app for VSI idx=%d err=%d sel=%d proto=0x%x, prio=%d\n",
|
|
vsi->idx, err, app->selector, app->prot_id, app->priority);
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_flush_apps - Delete all removed APPs
|
|
* @pf: the corresponding PF
|
|
* @old_cfg: old DCBX configuration data
|
|
* @new_cfg: new DCBX configuration data
|
|
*
|
|
* Find and delete all APPS that are not present in the passed
|
|
* DCB configuration
|
|
*/
|
|
void
|
|
ice_dcbnl_flush_apps(struct ice_pf *pf, struct ice_dcbx_cfg *old_cfg,
|
|
struct ice_dcbx_cfg *new_cfg)
|
|
{
|
|
struct ice_vsi *main_vsi = ice_get_main_vsi(pf);
|
|
unsigned int i;
|
|
|
|
if (!main_vsi)
|
|
return;
|
|
|
|
for (i = 0; i < old_cfg->numapps; i++) {
|
|
struct ice_dcb_app_priority_table app = old_cfg->app[i];
|
|
|
|
/* The APP is not available anymore delete it */
|
|
if (!ice_dcbnl_find_app(new_cfg, &app))
|
|
ice_dcbnl_vsi_del_app(main_vsi, &app);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ice_dcbnl_setup - setup DCBNL
|
|
* @vsi: VSI to get associated netdev from
|
|
*/
|
|
void ice_dcbnl_setup(struct ice_vsi *vsi)
|
|
{
|
|
struct net_device *netdev = vsi->netdev;
|
|
struct ice_pf *pf;
|
|
|
|
pf = ice_netdev_to_pf(netdev);
|
|
if (!test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))
|
|
return;
|
|
|
|
netdev->dcbnl_ops = &dcbnl_ops;
|
|
ice_dcbnl_set_all(vsi);
|
|
}
|