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/** * i40e_get_pfc_delay - retrieve PFC Link Delay * @hw: pointer to hardware struct * @delay: holds the PFC Link delay value * * Returns PFC Link Delay from the PRTDCB_GENC.PFCLDA **/ static void i40e_get_pfc_delay(struct i40e_hw *hw, u16 *delay) { u32 val; val = rd32(hw, I40E_PRTDCB_GENC); *delay = FIELD_GET(I40E_PRTDCB_GENC_PFCLDA_MASK, val); } /** * i40e_dcbnl_ieee_getets - retrieve local IEEE ETS configuration * @dev: the corresponding netdev * @ets: structure to hold the ETS information * * Returns local IEEE ETS configuration **/ static int i40e_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets) { struct i40e_pf *pf = i40e_netdev_to_pf(dev); struct i40e_dcbx_config *dcbxcfg; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) return -EINVAL; dcbxcfg = &pf->hw.local_dcbx_config; ets->willing = dcbxcfg->etscfg.willing; ets->ets_cap = I40E_MAX_TRAFFIC_CLASS; ets->cbs = dcbxcfg->etscfg.cbs; memcpy(ets->tc_tx_bw, dcbxcfg->etscfg.tcbwtable, sizeof(ets->tc_tx_bw)); memcpy(ets->tc_rx_bw, dcbxcfg->etscfg.tcbwtable, sizeof(ets->tc_rx_bw)); memcpy(ets->tc_tsa, dcbxcfg->etscfg.tsatable, sizeof(ets->tc_tsa)); memcpy(ets->prio_tc, dcbxcfg->etscfg.prioritytable, sizeof(ets->prio_tc)); memcpy(ets->tc_reco_bw, dcbxcfg->etsrec.tcbwtable, sizeof(ets->tc_reco_bw)); memcpy(ets->tc_reco_tsa, dcbxcfg->etsrec.tsatable, sizeof(ets->tc_reco_tsa)); memcpy(ets->reco_prio_tc, dcbxcfg->etscfg.prioritytable, sizeof(ets->reco_prio_tc)); return 0; } /** * i40e_dcbnl_ieee_getpfc - retrieve local IEEE PFC configuration * @dev: the corresponding netdev * @pfc: structure to hold the PFC information * * Returns local IEEE PFC configuration **/ static int i40e_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc) { struct i40e_pf *pf = i40e_netdev_to_pf(dev); struct i40e_dcbx_config *dcbxcfg; struct i40e_hw *hw = &pf->hw; int i; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) return -EINVAL; dcbxcfg = &hw->local_dcbx_config; pfc->pfc_cap = dcbxcfg->pfc.pfccap; pfc->pfc_en = dcbxcfg->pfc.pfcenable; pfc->mbc = dcbxcfg->pfc.mbc; i40e_get_pfc_delay(hw, &pfc->delay); /* Get Requests/Indications */ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { pfc->requests[i] = pf->stats.priority_xoff_tx[i]; pfc->indications[i] = pf->stats.priority_xoff_rx[i]; } return 0; } /** * i40e_dcbnl_ieee_setets - set IEEE ETS configuration * @netdev: the corresponding netdev * @ets: structure to hold the ETS information * * Set IEEE ETS configuration **/ static int i40e_dcbnl_ieee_setets(struct net_device *netdev, struct ieee_ets *ets) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); struct i40e_dcbx_config *old_cfg; int i, ret; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return -EINVAL; old_cfg = &pf->hw.local_dcbx_config; /* Copy current config into temp */ pf->tmp_cfg = *old_cfg; /* Update the ETS configuration for temp */ pf->tmp_cfg.etscfg.willing = ets->willing; pf->tmp_cfg.etscfg.maxtcs = I40E_MAX_TRAFFIC_CLASS; pf->tmp_cfg.etscfg.cbs = ets->cbs; for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { pf->tmp_cfg.etscfg.tcbwtable[i] = ets->tc_tx_bw[i]; pf->tmp_cfg.etscfg.tsatable[i] = ets->tc_tsa[i]; pf->tmp_cfg.etscfg.prioritytable[i] = ets->prio_tc[i]; pf->tmp_cfg.etsrec.tcbwtable[i] = ets->tc_reco_bw[i]; pf->tmp_cfg.etsrec.tsatable[i] = ets->tc_reco_tsa[i]; pf->tmp_cfg.etsrec.prioritytable[i] = ets->reco_prio_tc[i]; } /* Commit changes to HW */ ret = i40e_hw_dcb_config(pf, &pf->tmp_cfg); if (ret) { dev_info(&pf->pdev->dev, "Failed setting DCB ETS configuration err %pe aq_err %s\n", ERR_PTR(ret), i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); return -EINVAL; } return 0; } /** * i40e_dcbnl_ieee_setpfc - set local IEEE PFC configuration * @netdev: the corresponding netdev * @pfc: structure to hold the PFC information * * Sets local IEEE PFC configuration **/ static int i40e_dcbnl_ieee_setpfc(struct net_device *netdev, struct ieee_pfc *pfc) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); struct i40e_dcbx_config *old_cfg; int ret; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return -EINVAL; old_cfg = &pf->hw.local_dcbx_config; /* Copy current config into temp */ pf->tmp_cfg = *old_cfg; if (pfc->pfc_cap) pf->tmp_cfg.pfc.pfccap = pfc->pfc_cap; else pf->tmp_cfg.pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; pf->tmp_cfg.pfc.pfcenable = pfc->pfc_en; ret = i40e_hw_dcb_config(pf, &pf->tmp_cfg); if (ret) { dev_info(&pf->pdev->dev, "Failed setting DCB PFC configuration err %pe aq_err %s\n", ERR_PTR(ret), i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); return -EINVAL; } return 0; } /** * i40e_dcbnl_ieee_setapp - set local IEEE App configuration * @netdev: the corresponding netdev * @app: structure to hold the Application information * * Sets local IEEE App configuration **/ static int i40e_dcbnl_ieee_setapp(struct net_device *netdev, struct dcb_app *app) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); struct i40e_dcb_app_priority_table new_app; struct i40e_dcbx_config *old_cfg; int ret; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return -EINVAL; old_cfg = &pf->hw.local_dcbx_config; if (old_cfg->numapps == I40E_DCBX_MAX_APPS) return -EINVAL; ret = dcb_ieee_setapp(netdev, app); if (ret) return ret; new_app.selector = app->selector; new_app.protocolid = app->protocol; new_app.priority = app->priority; /* Already internally available */ if (i40e_dcbnl_find_app(old_cfg, &new_app)) return 0; /* Copy current config into temp */ pf->tmp_cfg = *old_cfg; /* Add the app */ pf->tmp_cfg.app[pf->tmp_cfg.numapps++] = new_app; ret = i40e_hw_dcb_config(pf, &pf->tmp_cfg); if (ret) { dev_info(&pf->pdev->dev, "Failed setting DCB configuration err %pe aq_err %s\n", ERR_PTR(ret), i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); return -EINVAL; } return 0; } /** * i40e_dcbnl_ieee_delapp - delete local IEEE App configuration * @netdev: the corresponding netdev * @app: structure to hold the Application information * * Deletes local IEEE App configuration other than the first application * required by firmware **/ static int i40e_dcbnl_ieee_delapp(struct net_device *netdev, struct dcb_app *app) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); struct i40e_dcbx_config *old_cfg; int i, j, ret; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return -EINVAL; ret = dcb_ieee_delapp(netdev, app); if (ret) return ret; old_cfg = &pf->hw.local_dcbx_config; /* Need one app for FW so keep it */ if (old_cfg->numapps == 1) return 0; /* Copy current config into temp */ pf->tmp_cfg = *old_cfg; /* Find and reset the app */ for (i = 1; i < pf->tmp_cfg.numapps; i++) { if (app->selector == pf->tmp_cfg.app[i].selector && app->protocol == pf->tmp_cfg.app[i].protocolid && app->priority == pf->tmp_cfg.app[i].priority) { /* Reset the app data */ pf->tmp_cfg.app[i].selector = 0; pf->tmp_cfg.app[i].protocolid = 0; pf->tmp_cfg.app[i].priority = 0; break; } } /* If the specific DCB app not found */ if (i == pf->tmp_cfg.numapps) return -EINVAL; pf->tmp_cfg.numapps--; /* Overwrite the tmp_cfg app */ for (j = i; j < pf->tmp_cfg.numapps; j++) pf->tmp_cfg.app[j] = old_cfg->app[j + 1]; ret = i40e_hw_dcb_config(pf, &pf->tmp_cfg); if (ret) { dev_info(&pf->pdev->dev, "Failed setting DCB configuration err %pe aq_err %s\n", ERR_PTR(ret), i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status)); return -EINVAL; } return 0; } /** * i40e_dcbnl_getstate - Get DCB enabled state * @netdev: the corresponding netdev * * Get the current DCB enabled state **/ static u8 i40e_dcbnl_getstate(struct net_device *netdev) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); dev_dbg(&pf->pdev->dev, "DCB state=%d\n", test_bit(I40E_FLAG_DCB_ENA, pf->flags) ? 1 : 0); return test_bit(I40E_FLAG_DCB_ENA, pf->flags) ? 1 : 0; } /** * i40e_dcbnl_setstate - Set DCB state * @netdev: the corresponding netdev * @state: enable or disable * * Set the DCB state **/ static u8 i40e_dcbnl_setstate(struct net_device *netdev, u8 state) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); int ret = I40E_DCBNL_STATUS_SUCCESS; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return ret; dev_dbg(&pf->pdev->dev, "new state=%d current state=%d\n", state, test_bit(I40E_FLAG_DCB_ENA, pf->flags) ? 1 : 0); /* Nothing to do */ if (!state == !test_bit(I40E_FLAG_DCB_ENA, pf->flags)) return ret; if (i40e_is_sw_dcb(pf)) { if (state) { set_bit(I40E_FLAG_DCB_ENA, pf->flags); memcpy(&pf->hw.desired_dcbx_config, &pf->hw.local_dcbx_config, sizeof(struct i40e_dcbx_config)); } else { clear_bit(I40E_FLAG_DCB_ENA, pf->flags); } } else { /* Cannot directly manipulate FW LLDP Agent */ ret = I40E_DCBNL_STATUS_ERROR; } return ret; } /** * i40e_dcbnl_set_pg_tc_cfg_tx - Set CEE PG Tx config * @netdev: the corresponding netdev * @tc: the corresponding traffic class * @prio_type: the traffic priority type * @bwg_id: the BW group id the traffic class belongs to * @bw_pct: the BW percentage for the corresponding BWG * @up_map: prio mapped to corresponding tc * * Set Tx PG settings for CEE mode **/ static void i40e_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc, u8 prio_type, u8 bwg_id, u8 bw_pct, u8 up_map) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); int i; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; /* LLTC not supported yet */ if (tc >= I40E_MAX_TRAFFIC_CLASS) return; /* prio_type, bwg_id and bw_pct per UP are not supported */ /* Use only up_map to map tc */ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { if (up_map & BIT(i)) pf->tmp_cfg.etscfg.prioritytable[i] = tc; } pf->tmp_cfg.etscfg.tsatable[tc] = I40E_IEEE_TSA_ETS; dev_dbg(&pf->pdev->dev, "Set PG config tc=%d bwg_id=%d prio_type=%d bw_pct=%d up_map=%d\n", tc, bwg_id, prio_type, bw_pct, up_map); } /** * i40e_dcbnl_set_pg_bwg_cfg_tx - Set CEE PG Tx BW config * @netdev: the corresponding netdev * @pgid: the corresponding traffic class * @bw_pct: the BW percentage for the specified traffic class * * Set Tx BW settings for CEE mode **/ static void i40e_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int pgid, u8 bw_pct) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; /* LLTC not supported yet */ if (pgid >= I40E_MAX_TRAFFIC_CLASS) return; pf->tmp_cfg.etscfg.tcbwtable[pgid] = bw_pct; dev_dbg(&pf->pdev->dev, "Set PG BW config tc=%d bw_pct=%d\n", pgid, bw_pct); } /** * i40e_dcbnl_set_pg_tc_cfg_rx - Set CEE PG Rx config * @netdev: the corresponding netdev * @prio: the corresponding traffic class * @prio_type: the traffic priority type * @pgid: the BW group id the traffic class belongs to * @bw_pct: the BW percentage for the corresponding BWG * @up_map: prio mapped to corresponding tc * * Set Rx BW settings for CEE mode. The hardware does not support this * so we won't allow setting of this parameter. **/ static void i40e_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 i40e_pf *pf = i40e_netdev_to_pf(netdev); dev_dbg(&pf->pdev->dev, "Rx TC PG Config Not Supported.\n"); } /** * i40e_dcbnl_set_pg_bwg_cfg_rx - Set CEE PG Rx config * @netdev: the corresponding netdev * @pgid: the corresponding traffic class * @bw_pct: the BW percentage for the specified traffic class * * Set Rx BW settings for CEE mode. The hardware does not support this * so we won't allow setting of this parameter. **/ static void i40e_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int pgid, u8 bw_pct) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); dev_dbg(&pf->pdev->dev, "Rx BWG PG Config Not Supported.\n"); } /** * i40e_dcbnl_get_pg_tc_cfg_tx - Get CEE PG Tx config * @netdev: the corresponding netdev * @prio: the corresponding user priority * @prio_type: traffic priority type * @pgid: the BW group ID the traffic class belongs to * @bw_pct: BW percentage for the corresponding BWG * @up_map: prio mapped to corresponding TC * * Get Tx PG settings for CEE mode **/ static void i40e_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int prio, u8 __always_unused *prio_type, u8 *pgid, u8 __always_unused *bw_pct, u8 __always_unused *up_map) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; if (prio >= I40E_MAX_USER_PRIORITY) return; *pgid = pf->hw.local_dcbx_config.etscfg.prioritytable[prio]; dev_dbg(&pf->pdev->dev, "Get PG config prio=%d tc=%d\n", prio, *pgid); } /** * i40e_dcbnl_get_pg_bwg_cfg_tx - Get CEE PG BW config * @netdev: the corresponding netdev * @pgid: the corresponding traffic class * @bw_pct: the BW percentage for the corresponding TC * * Get Tx BW settings for given TC in CEE mode **/ static void i40e_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int pgid, u8 *bw_pct) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; if (pgid >= I40E_MAX_TRAFFIC_CLASS) return; *bw_pct = pf->hw.local_dcbx_config.etscfg.tcbwtable[pgid]; dev_dbg(&pf->pdev->dev, "Get PG BW config tc=%d bw_pct=%d\n", pgid, *bw_pct); } /** * i40e_dcbnl_get_pg_tc_cfg_rx - Get CEE PG Rx config * @netdev: the corresponding netdev * @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 * * Get Rx PG settings for CEE mode. The UP2TC map is applied in same * manner for Tx and Rx (symmetrical) so return the TC information for * given priority accordingly. **/ static void i40e_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int prio, u8 *prio_type, u8 *pgid, u8 *bw_pct, u8 *up_map) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; if (prio >= I40E_MAX_USER_PRIORITY) return; *pgid = pf->hw.local_dcbx_config.etscfg.prioritytable[prio]; } /** * i40e_dcbnl_get_pg_bwg_cfg_rx - Get CEE PG BW Rx config * @netdev: the corresponding netdev * @pgid: the corresponding traffic class * @bw_pct: the BW percentage for the corresponding TC * * Get Rx BW settings for given TC in CEE mode * The adapter doesn't support Rx ETS and runs in strict priority * mode in Rx path and hence just return 0. **/ static void i40e_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int pgid, u8 *bw_pct) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; *bw_pct = 0; } /** * i40e_dcbnl_set_pfc_cfg - Set CEE PFC configuration * @netdev: the corresponding netdev * @prio: the corresponding user priority * @setting: the PFC setting for given priority * * Set the PFC enabled/disabled setting for given user priority **/ static void i40e_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio, u8 setting) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; if (prio >= I40E_MAX_USER_PRIORITY) return; pf->tmp_cfg.pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; if (setting) pf->tmp_cfg.pfc.pfcenable |= BIT(prio); else pf->tmp_cfg.pfc.pfcenable &= ~BIT(prio); dev_dbg(&pf->pdev->dev, "Set PFC Config up=%d setting=%d pfcenable=0x%x\n", prio, setting, pf->tmp_cfg.pfc.pfcenable); } /** * i40e_dcbnl_get_pfc_cfg - Get CEE PFC configuration * @netdev: the corresponding netdev * @prio: the corresponding user priority * @setting: the PFC setting for given priority * * Get the PFC enabled/disabled setting for given user priority **/ static void i40e_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio, u8 *setting) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return; if (prio >= I40E_MAX_USER_PRIORITY) return; *setting = (pf->hw.local_dcbx_config.pfc.pfcenable >> prio) & 0x1; dev_dbg(&pf->pdev->dev, "Get PFC Config up=%d setting=%d pfcenable=0x%x\n", prio, *setting, pf->hw.local_dcbx_config.pfc.pfcenable); } /** * i40e_dcbnl_cee_set_all - Commit CEE DCB settings to hardware * @netdev: the corresponding netdev * * Commit the current DCB configuration to hardware **/ static u8 i40e_dcbnl_cee_set_all(struct net_device *netdev) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); int err; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return I40E_DCBNL_STATUS_ERROR; dev_dbg(&pf->pdev->dev, "Commit DCB Configuration to the hardware\n"); err = i40e_hw_dcb_config(pf, &pf->tmp_cfg); return err ? I40E_DCBNL_STATUS_ERROR : I40E_DCBNL_STATUS_SUCCESS; } /** * i40e_dcbnl_get_cap - Get DCBX capabilities of adapter * @netdev: the corresponding netdev * @capid: the capability type * @cap: the capability value * * Return the capability value for a given capability type **/ static u8 i40e_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!test_bit(I40E_FLAG_DCB_CAPABLE, pf->flags)) return I40E_DCBNL_STATUS_ERROR; switch (capid) { case DCB_CAP_ATTR_PG: case DCB_CAP_ATTR_PFC: *cap = true; break; case DCB_CAP_ATTR_PG_TCS: case DCB_CAP_ATTR_PFC_TCS: *cap = 0x80; break; case DCB_CAP_ATTR_DCBX: *cap = pf->dcbx_cap; break; case DCB_CAP_ATTR_UP2TC: case DCB_CAP_ATTR_GSP: case DCB_CAP_ATTR_BCN: default: *cap = false; break; } dev_dbg(&pf->pdev->dev, "Get Capability cap=%d capval=0x%x\n", capid, *cap); return I40E_DCBNL_STATUS_SUCCESS; } /** * i40e_dcbnl_getnumtcs - Get max number of traffic classes supported * @netdev: the corresponding netdev * @tcid: the TC id * @num: total number of TCs supported by the device * * Return the total number of TCs supported by the adapter **/ static int i40e_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); if (!test_bit(I40E_FLAG_DCB_CAPABLE, pf->flags)) return -EINVAL; *num = I40E_MAX_TRAFFIC_CLASS; return 0; } /** * i40e_dcbnl_setnumtcs - Set CEE number of traffic classes * @netdev: the corresponding netdev * @tcid: the TC id * @num: total number of TCs * * Set the total number of TCs (Unsupported) **/ static int i40e_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num) { return -EINVAL; } /** * i40e_dcbnl_getpfcstate - Get CEE PFC mode * @netdev: the corresponding netdev * * Get the current PFC enabled state **/ static u8 i40e_dcbnl_getpfcstate(struct net_device *netdev) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); /* Return enabled if any PFC enabled UP */ if (pf->hw.local_dcbx_config.pfc.pfcenable) return 1; else return 0; } /** * i40e_dcbnl_setpfcstate - Set CEE PFC mode * @netdev: the corresponding netdev * @state: required state * * The PFC state to be set; this is enabled/disabled based on the PFC * priority settings and not via this call for i40e driver **/ static void i40e_dcbnl_setpfcstate(struct net_device *netdev, u8 state) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); dev_dbg(&pf->pdev->dev, "PFC State is modified via PFC config.\n"); } /** * i40e_dcbnl_getapp - Get CEE APP * @netdev: the corresponding netdev * @idtype: the App selector * @id: the App ethtype or port number * * Return the CEE mode app for the given idtype and id **/ static int i40e_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); struct dcb_app app = { .selector = idtype, .protocol = id, }; if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_CEE) || (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)) return -EINVAL; return dcb_getapp(netdev, &app); } /** * i40e_dcbnl_setdcbx - set required DCBx capability * @netdev: the corresponding netdev * @mode: new DCB mode managed or CEE+IEEE * * Set DCBx capability features **/ static u8 i40e_dcbnl_setdcbx(struct net_device *netdev, u8 mode) { struct i40e_pf *pf = i40e_netdev_to_pf(netdev); /* Do not allow to set mode if managed by Firmware */ if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) return I40E_DCBNL_STATUS_ERROR; /* No support for LLD_MANAGED modes or CEE+IEEE */ if ((mode & DCB_CAP_DCBX_LLD_MANAGED) || ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) || !(mode & DCB_CAP_DCBX_HOST)) return I40E_DCBNL_STATUS_ERROR; /* Already set to the given mode no change */ if (mode == pf->dcbx_cap) return I40E_DCBNL_STATUS_SUCCESS; pf->dcbx_cap = mode; if (mode & DCB_CAP_DCBX_VER_CEE) pf->hw.local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE; else pf->hw.local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE; dev_dbg(&pf->pdev->dev, "mode=%d\n", mode); return I40E_DCBNL_STATUS_SUCCESS; } /** * i40e_dcbnl_getdcbx - retrieve current DCBx capability * @dev: the corresponding netdev * * Returns DCBx capability features **/ static u8 i40e_dcbnl_getdcbx(struct net_device *dev) { struct i40e_pf *pf = i40e_netdev_to_pf(dev); return pf->dcbx_cap; } /** * i40e_dcbnl_get_perm_hw_addr - MAC address used by DCBx * @dev: the corresponding netdev * @perm_addr: buffer to store the MAC address * * Returns the SAN MAC address used for LLDP exchange **/ static void i40e_dcbnl_get_perm_hw_addr(struct net_device *dev, u8 *perm_addr) { struct i40e_pf *pf = i40e_netdev_to_pf(dev); int i; memset(perm_addr, 0xff, MAX_ADDR_LEN); for (i = 0; i < dev->addr_len; i++) perm_addr[i] = pf->hw.mac.perm_addr[i]; } static const struct dcbnl_rtnl_ops dcbnl_ops = { .ieee_getets = i40e_dcbnl_ieee_getets, .ieee_getpfc = i40e_dcbnl_ieee_getpfc, .getdcbx = i40e_dcbnl_getdcbx, .getpermhwaddr = i40e_dcbnl_get_perm_hw_addr, .ieee_setets = i40e_dcbnl_ieee_setets, .ieee_setpfc = i40e_dcbnl_ieee_setpfc, .ieee_setapp = i40e_dcbnl_ieee_setapp, .ieee_delapp = i40e_dcbnl_ieee_delapp, .getstate = i40e_dcbnl_getstate, .setstate = i40e_dcbnl_setstate, .setpgtccfgtx = i40e_dcbnl_set_pg_tc_cfg_tx, .setpgbwgcfgtx = i40e_dcbnl_set_pg_bwg_cfg_tx, .setpgtccfgrx = i40e_dcbnl_set_pg_tc_cfg_rx, .setpgbwgcfgrx = i40e_dcbnl_set_pg_bwg_cfg_rx, .getpgtccfgtx = i40e_dcbnl_get_pg_tc_cfg_tx, .getpgbwgcfgtx = i40e_dcbnl_get_pg_bwg_cfg_tx, .getpgtccfgrx = i40e_dcbnl_get_pg_tc_cfg_rx, .getpgbwgcfgrx = i40e_dcbnl_get_pg_bwg_cfg_rx, .setpfccfg = i40e_dcbnl_set_pfc_cfg, .getpfccfg = i40e_dcbnl_get_pfc_cfg, .setall = i40e_dcbnl_cee_set_all, .getcap = i40e_dcbnl_get_cap, .getnumtcs = i40e_dcbnl_getnumtcs, .setnumtcs = i40e_dcbnl_setnumtcs, .getpfcstate = i40e_dcbnl_getpfcstate, .setpfcstate = i40e_dcbnl_setpfcstate, .getapp = i40e_dcbnl_getapp, .setdcbx = i40e_dcbnl_setdcbx, }; /** * i40e_dcbnl_set_all - set all the apps and ieee data from DCBx config * @vsi: the corresponding vsi * * Set up all the IEEE APPs in the DCBNL App Table and generate event for * other settings **/ void i40e_dcbnl_set_all(struct i40e_vsi *vsi) { struct net_device *dev = vsi->netdev; struct i40e_pf *pf = i40e_netdev_to_pf(dev); struct i40e_dcbx_config *dcbxcfg; struct i40e_hw *hw = &pf->hw; struct dcb_app sapp; u8 prio, tc_map; int i; /* SW DCB taken care by DCBNL set calls */ if (pf->dcbx_cap & DCB_CAP_DCBX_HOST) return; /* DCB not enabled */ if (!test_bit(I40E_FLAG_DCB_ENA, pf->flags)) return; /* MFP mode but not an iSCSI PF so return */ if (test_bit(I40E_FLAG_MFP_ENA, pf->flags) && !(hw->func_caps.iscsi)) return; dcbxcfg = &hw->local_dcbx_config; /* Set up all the App TLVs if DCBx is negotiated */ for (i = 0; i < dcbxcfg->numapps; i++) { prio = dcbxcfg->app[i].priority; tc_map = BIT(dcbxcfg->etscfg.prioritytable[prio]); /* Add APP only if the TC is enabled for this VSI */ if (tc_map & vsi->tc_config.enabled_tc) { sapp.selector = dcbxcfg->app[i].selector; sapp.protocol = dcbxcfg->app[i].protocolid; sapp.priority = prio; dcb_ieee_setapp(dev, &sapp); } } /* Notify user-space of the changes */ dcbnl_ieee_notify(dev, RTM_SETDCB, DCB_CMD_IEEE_SET, 0, 0); } /** * i40e_dcbnl_vsi_del_app - Delete APP for given VSI * @vsi: the corresponding vsi * @app: APP to delete * * Delete given APP from the DCBNL APP table for given * VSI **/ static int i40e_dcbnl_vsi_del_app(struct i40e_vsi *vsi, struct i40e_dcb_app_priority_table *app) { struct net_device *dev = vsi->netdev; struct dcb_app sapp; if (!dev) return -EINVAL; sapp.selector = app->selector; sapp.protocol = app->protocolid; sapp.priority = app->priority; return dcb_ieee_delapp(dev, &sapp); } /** * i40e_dcbnl_del_app - Delete APP on all VSIs * @pf: the corresponding PF * @app: APP to delete * * Delete given APP from all the VSIs for given PF **/ static void i40e_dcbnl_del_app(struct i40e_pf *pf, struct i40e_dcb_app_priority_table *app) { struct i40e_vsi *vsi; int v, err; i40e_pf_for_each_vsi(pf, v, vsi) if (vsi->netdev) { err = i40e_dcbnl_vsi_del_app(vsi, app); dev_dbg(&pf->pdev->dev, "Deleting app for VSI seid=%d err=%d sel=%d proto=0x%x prio=%d\n", vsi->seid, err, app->selector, app->protocolid, app->priority); } } /** * i40e_dcbnl_find_app - Search APP in given DCB config * @cfg: DCBX configuration data * @app: APP to search for * * Find given APP in the DCB configuration **/ static bool i40e_dcbnl_find_app(struct i40e_dcbx_config *cfg, struct i40e_dcb_app_priority_table *app) { int i; for (i = 0; i < cfg->numapps; i++) { if (app->selector == cfg->app[i].selector && app->protocolid == cfg->app[i].protocolid && app->priority == cfg->app[i].priority) return true; } return false; } /** * i40e_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 i40e_dcbnl_flush_apps(struct i40e_pf *pf, struct i40e_dcbx_config *old_cfg, struct i40e_dcbx_config *new_cfg) { struct i40e_dcb_app_priority_table app; int i; /* MFP mode but not an iSCSI PF so return */ if (test_bit(I40E_FLAG_MFP_ENA, pf->flags) && !(pf->hw.func_caps.iscsi)) return; for (i = 0; i < old_cfg->numapps; i++) { app = old_cfg->app[i]; /* The APP is not available anymore delete it */ if (!i40e_dcbnl_find_app(new_cfg, &app)) i40e_dcbnl_del_app(pf, &app); } } /** * i40e_dcbnl_setup - DCBNL setup * @vsi: the corresponding vsi * * Set up DCBNL ops and initial APP TLVs **/ void i40e_dcbnl_setup(struct i40e_vsi *vsi) { struct net_device *dev = vsi->netdev; struct i40e_pf *pf = i40e_netdev_to_pf(dev); /* Not DCB capable */ if (!test_bit(I40E_FLAG_DCB_CAPABLE, pf->flags)) return; dev->dcbnl_ops = &dcbnl_ops; /* Set initial IEEE DCB settings */ i40e_dcbnl_set_all(vsi); } #endif /* CONFIG_I40E_DCB */ |