// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2021 Intel Corporation. */
#ifdef CONFIG_I40E_DCB
#include <net/dcbnl.h>
#include "i40e.h"
#define I40E_DCBNL_STATUS_SUCCESS 0
#define I40E_DCBNL_STATUS_ERROR 1
static bool i40e_dcbnl_find_app(struct i40e_dcbx_config *cfg,
struct i40e_dcb_app_priority_table *app);
/**
* 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 */
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