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|
/*******************************************************************************
Intel 10 Gigabit PCI Express Linux driver
Copyright(c) 1999 - 2010 Intel Corporation.
This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
The full GNU General Public License is included in this distribution in
the file called "COPYING".
Contact Information:
Linux NICS <linux.nics@intel.com>
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "ixgbe.h"
#include <linux/dcbnl.h>
#include "ixgbe_dcb_82598.h"
#include "ixgbe_dcb_82599.h"
/* Callbacks for DCB netlink in the kernel */
#define BIT_DCB_MODE 0x01
#define BIT_PFC 0x02
#define BIT_PG_RX 0x04
#define BIT_PG_TX 0x08
#define BIT_APP_UPCHG 0x10
#define BIT_RESETLINK 0x40
#define BIT_LINKSPEED 0x80
/* Responses for the DCB_C_SET_ALL command */
#define DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */
#define DCB_NO_HW_CHG 1 /* DCB configuration did not change */
#define DCB_HW_CHG 2 /* DCB configuration changed, no reset */
int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
{
struct tc_configuration *src_tc_cfg = NULL;
struct tc_configuration *dst_tc_cfg = NULL;
int i;
if (!src_dcb_cfg || !dst_dcb_cfg)
return -EINVAL;
for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
}
for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
[DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
[DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
}
for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
}
dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
return 0;
}
static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
}
static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
{
u8 err = 0;
struct ixgbe_adapter *adapter = netdev_priv(netdev);
if (state > 0) {
/* Turn on DCB */
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
goto out;
if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
e_err(drv, "Enable failed, needs MSI-X\n");
err = 1;
goto out;
}
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
adapter->last_lfc_mode = adapter->hw.fc.current_mode;
adapter->hw.fc.requested_mode = ixgbe_fc_none;
}
adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
}
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
} else {
/* Turn off DCB */
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
adapter->temp_dcb_cfg.pfc_mode_enable = false;
adapter->dcb_cfg.pfc_mode_enable = false;
adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
if (adapter->hw.mac.type == ixgbe_mac_82599EB)
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
}
}
out:
return err;
}
static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
u8 *perm_addr)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int i, j;
memset(perm_addr, 0xff, MAX_ADDR_LEN);
for (i = 0; i < netdev->addr_len; i++)
perm_addr[i] = adapter->hw.mac.perm_addr[i];
if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
for (j = 0; j < netdev->addr_len; j++, i++)
perm_addr[i] = adapter->hw.mac.san_addr[j];
}
}
static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
u8 prio, u8 bwg_id, u8 bw_pct,
u8 up_map)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
if (prio != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
bw_pct;
if (up_map != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
up_map;
if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
adapter->dcb_set_bitmap |= BIT_PG_TX;
adapter->dcb_set_bitmap |= BIT_RESETLINK;
}
}
static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
u8 bw_pct)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
adapter->dcb_set_bitmap |= BIT_PG_TX;
adapter->dcb_set_bitmap |= BIT_RESETLINK;
}
}
static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
u8 prio, u8 bwg_id, u8 bw_pct,
u8 up_map)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
if (prio != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
bw_pct;
if (up_map != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
up_map;
if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
(adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
adapter->dcb_set_bitmap |= BIT_PG_RX;
adapter->dcb_set_bitmap |= BIT_RESETLINK;
}
}
static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
u8 bw_pct)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
adapter->dcb_set_bitmap |= BIT_PG_RX;
adapter->dcb_set_bitmap |= BIT_RESETLINK;
}
}
static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
u8 *prio, u8 *bwg_id, u8 *bw_pct,
u8 *up_map)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
*prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
*bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
*bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
*up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
}
static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
u8 *bw_pct)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
*bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
}
static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
u8 *prio, u8 *bwg_id, u8 *bw_pct,
u8 *up_map)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
*prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
*bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
*bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
*up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
}
static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
u8 *bw_pct)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
*bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
}
static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
u8 setting)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
adapter->dcb_set_bitmap |= BIT_PFC;
adapter->temp_dcb_cfg.pfc_mode_enable = true;
}
}
static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
u8 *setting)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
*setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
}
static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int ret;
if (!adapter->dcb_set_bitmap)
return DCB_NO_HW_CHG;
ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
adapter->ring_feature[RING_F_DCB].indices);
if (ret)
return DCB_NO_HW_CHG;
/*
* Only take down the adapter if the configuration change
* requires a reset.
*/
if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
msleep(1);
if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
} else {
if (netif_running(netdev))
ixgbe_down(adapter);
}
}
if (adapter->dcb_cfg.pfc_mode_enable) {
if ((adapter->hw.mac.type != ixgbe_mac_82598EB) &&
(adapter->hw.fc.current_mode != ixgbe_fc_pfc))
adapter->last_lfc_mode = adapter->hw.fc.current_mode;
adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
} else {
if (adapter->hw.mac.type != ixgbe_mac_82598EB)
adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
else
adapter->hw.fc.requested_mode = ixgbe_fc_none;
}
if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
} else {
if (netif_running(netdev))
ixgbe_up(adapter);
}
ret = DCB_HW_CHG_RST;
} else if (adapter->dcb_set_bitmap & BIT_PFC) {
if (adapter->hw.mac.type == ixgbe_mac_82598EB)
ixgbe_dcb_config_pfc_82598(&adapter->hw,
&adapter->dcb_cfg);
else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
ixgbe_dcb_config_pfc_82599(&adapter->hw,
&adapter->dcb_cfg);
ret = DCB_HW_CHG;
}
if (adapter->dcb_cfg.pfc_mode_enable)
adapter->hw.fc.current_mode = ixgbe_fc_pfc;
if (adapter->dcb_set_bitmap & BIT_RESETLINK)
clear_bit(__IXGBE_RESETTING, &adapter->state);
adapter->dcb_set_bitmap = 0x00;
return ret;
}
static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
u8 rval = 0;
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
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 = true;
break;
case DCB_CAP_ATTR_BCN:
*cap = false;
break;
default:
rval = -EINVAL;
break;
}
} else {
rval = -EINVAL;
}
return rval;
}
static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
u8 rval = 0;
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
switch (tcid) {
case DCB_NUMTCS_ATTR_PG:
*num = MAX_TRAFFIC_CLASS;
break;
case DCB_NUMTCS_ATTR_PFC:
*num = MAX_TRAFFIC_CLASS;
break;
default:
rval = -EINVAL;
break;
}
} else {
rval = -EINVAL;
}
return rval;
}
static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
{
return -EINVAL;
}
static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
return adapter->dcb_cfg.pfc_mode_enable;
}
static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
adapter->temp_dcb_cfg.pfc_mode_enable = state;
if (adapter->temp_dcb_cfg.pfc_mode_enable !=
adapter->dcb_cfg.pfc_mode_enable)
adapter->dcb_set_bitmap |= BIT_PFC;
}
/**
* ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
* @netdev : the corresponding netdev
* @idtype : identifies the id as ether type or TCP/UDP port number
* @id: id is either ether type or TCP/UDP port number
*
* Returns : on success, returns a non-zero 802.1p user priority bitmap
* otherwise returns 0 as the invalid user priority bitmap to indicate an
* error.
*/
static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
{
u8 rval = 0;
switch (idtype) {
case DCB_APP_IDTYPE_ETHTYPE:
#ifdef IXGBE_FCOE
if (id == ETH_P_FCOE)
rval = ixgbe_fcoe_getapp(netdev_priv(netdev));
#endif
break;
case DCB_APP_IDTYPE_PORTNUM:
break;
default:
break;
}
return rval;
}
/**
* ixgbe_dcbnl_setapp - set the DCBX application user priority
* @netdev : the corresponding netdev
* @idtype : identifies the id as ether type or TCP/UDP port number
* @id: id is either ether type or TCP/UDP port number
* @up: the 802.1p user priority bitmap
*
* Returns : 0 on success or 1 on error
*/
static u8 ixgbe_dcbnl_setapp(struct net_device *netdev,
u8 idtype, u16 id, u8 up)
{
u8 rval = 1;
switch (idtype) {
case DCB_APP_IDTYPE_ETHTYPE:
#ifdef IXGBE_FCOE
if (id == ETH_P_FCOE) {
u8 tc;
struct ixgbe_adapter *adapter;
adapter = netdev_priv(netdev);
tc = adapter->fcoe.tc;
rval = ixgbe_fcoe_setapp(adapter, up);
if ((!rval) && (tc != adapter->fcoe.tc) &&
(adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) {
adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
adapter->dcb_set_bitmap |= BIT_RESETLINK;
}
}
#endif
break;
case DCB_APP_IDTYPE_PORTNUM:
break;
default:
break;
}
return rval;
}
const struct dcbnl_rtnl_ops dcbnl_ops = {
.getstate = ixgbe_dcbnl_get_state,
.setstate = ixgbe_dcbnl_set_state,
.getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr,
.setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx,
.setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
.setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx,
.setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
.getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx,
.getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
.getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx,
.getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
.setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
.getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
.setall = ixgbe_dcbnl_set_all,
.getcap = ixgbe_dcbnl_getcap,
.getnumtcs = ixgbe_dcbnl_getnumtcs,
.setnumtcs = ixgbe_dcbnl_setnumtcs,
.getpfcstate = ixgbe_dcbnl_getpfcstate,
.setpfcstate = ixgbe_dcbnl_setpfcstate,
.getapp = ixgbe_dcbnl_getapp,
.setapp = ixgbe_dcbnl_setapp,
};
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