/**
* 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;
#ifdef HAVE_DCBNL_IEEE
struct dcb_app app = {
.selector = idtype,
.protocol = id,
};
rval = dcb_getapp(netdev, &app);
#endif
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_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)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct dcb_app app = {
.selector = idtype,
.protocol = id,
};
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
return 0;
return dcb_getapp(netdev, &app);
}
static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max)
{
struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg;
struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg;
struct tc_configuration *src = NULL;
struct tc_configuration *dst = NULL;
int i, j;
int tx = DCB_TX_CONFIG;
int rx = DCB_RX_CONFIG;
int changes = 0;
#ifdef IXGBE_FCOE
struct dcb_app app = {
.selector = DCB_APP_IDTYPE_ETHTYPE,
.protocol = ETH_P_FCOE,
};
u8 up = dcb_getapp(adapter->netdev, &app);
if (up && !(up & (1 << adapter->fcoe.up)))
changes |= BIT_APP_UPCHG;
#endif
for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0];
dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0];
if (dst->path[tx].prio_type != src->path[tx].prio_type) {
dst->path[tx].prio_type = src->path[tx].prio_type;
changes |= BIT_PG_TX;
}
if (dst->path[tx].bwg_id != src->path[tx].bwg_id) {
dst->path[tx].bwg_id = src->path[tx].bwg_id;
changes |= BIT_PG_TX;
}
if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) {
dst->path[tx].bwg_percent = src->path[tx].bwg_percent;
changes |= BIT_PG_TX;
}
if (dst->path[tx].up_to_tc_bitmap !=
src->path[tx].up_to_tc_bitmap) {
dst->path[tx].up_to_tc_bitmap =
src->path[tx].up_to_tc_bitmap;
changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG);
}
if (dst->path[rx].prio_type != src->path[rx].prio_type) {
dst->path[rx].prio_type = src->path[rx].prio_type;
changes |= BIT_PG_RX;
}
if (dst->path[rx].bwg_id != src->path[rx].bwg_id) {
dst->path[rx].bwg_id = src->path[rx].bwg_id;
changes |= BIT_PG_RX;
}
if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) {
dst->path[rx].bwg_percent = src->path[rx].bwg_percent;
changes |= BIT_PG_RX;
}
if (dst->path[rx].up_to_tc_bitmap !=
src->path[rx].up_to_tc_bitmap) {
dst->path[rx].up_to_tc_bitmap =
src->path[rx].up_to_tc_bitmap;
changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG);
}
}
for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
j = i - DCB_PG_ATTR_BW_ID_0;
if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) {
dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j];
changes |= BIT_PG_TX;
}
if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) {
dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j];
changes |= BIT_PG_RX;
}
}
for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
j = i - DCB_PFC_UP_ATTR_0;
if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) {
dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc;
changes |= BIT_PFC;
}
}
if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) {
dcfg->pfc_mode_enable = scfg->pfc_mode_enable;
changes |= BIT_PFC;
}
return changes;
}
static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
struct ixgbe_hw *hw = &adapter->hw;
int ret = DCB_NO_HW_CHG;
int i;
/* Fail command if not in CEE mode */
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
return ret;
adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter,
MAX_TRAFFIC_CLASS);
if (!adapter->dcb_set_bitmap)
return ret;
if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
/* Priority to TC mapping in CEE case default to 1:1 */
u8 prio_tc[MAX_USER_PRIORITY];
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
#ifdef IXGBE_FCOE
if (adapter->netdev->features & NETIF_F_FCOE_MTU)
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif
ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
DCB_TX_CONFIG);
ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame,
DCB_RX_CONFIG);
ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill);
ixgbe_dcb_unpack_max(dcb_cfg, max);
ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id);
ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type);
ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id,
prio_type, prio_tc);
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
ret = DCB_HW_CHG_RST;
}
if (adapter->dcb_set_bitmap & BIT_PFC) {
if (dcb_cfg->pfc_mode_enable) {
u8 pfc_en;
u8 prio_tc[MAX_USER_PRIORITY];
ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc);
ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en);
ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc);
} else {
hw->mac.ops.fc_enable(hw);
}
ixgbe_set_rx_drop_en(adapter);
ret = DCB_HW_CHG;
}
#ifdef IXGBE_FCOE
/* Reprogam FCoE hardware offloads when the traffic class
* FCoE is using changes. This happens if the APP info
* changes or the up2tc mapping is updated.
*/
if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
struct dcb_app app = {
.selector = DCB_APP_IDTYPE_ETHTYPE,
.protocol = ETH_P_FCOE,
};
u8 up = dcb_getapp(netdev, &app);
adapter->fcoe.up = ffs(up) - 1;
ixgbe_dcbnl_devreset(netdev);
ret = DCB_HW_CHG_RST;
}
#endif
adapter->dcb_set_bitmap = 0x00;
return ret;
}
static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int ret, i;
#ifdef IXGBE_FCOE
struct dcb_app app = {
.selector = DCB_APP_IDTYPE_ETHTYPE,
.protocol = ETH_P_FCOE,
};
u8 up = dcb_getapp(netdev, &app);
#endif
/* Fail command if not in CEE mode */
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
return 1;
ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
MAX_TRAFFIC_CLASS);
if (ret)
return DCB_NO_HW_CHG;
#ifdef IXGBE_FCOE
if (up && (up != (1 << adapter->fcoe.up)))
adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
/*
* Only take down the adapter if an app change occurred. FCoE
* may shuffle tx rings in this case and this can not be done
* without a reset currently.
*/
if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
usleep_range(1000, 2000);
adapter->fcoe.up = ffs(up) - 1;
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
}
#endif
if (adapter->dcb_cfg.pfc_mode_enable) {
switch (adapter->hw.mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
adapter->last_lfc_mode =
adapter->hw.fc.current_mode;
break;
default:
break;
}
adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
} else {
switch (adapter->hw.mac.type) {
case ixgbe_mac_82598EB:
adapter->hw.fc.requested_mode = ixgbe_fc_none;
break;
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
break;
default:
break;
}
}
#ifdef IXGBE_FCOE
if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
ret = DCB_HW_CHG_RST;
}
#endif
if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
/* Priority to TC mapping in CEE case default to 1:1 */
u8 prio_tc[MAX_USER_PRIORITY];
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
#ifdef IXGBE_FCOE
if (adapter->netdev->features & NETIF_F_FCOE_MTU)
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif
ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
max_frame, DCB_TX_CONFIG);
ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
max_frame, DCB_RX_CONFIG);
ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
DCB_TX_CONFIG, refill);
ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
DCB_TX_CONFIG, bwg_id);
ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
DCB_TX_CONFIG, prio_type);
ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
DCB_TX_CONFIG, prio_tc);
ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
bwg_id, prio_type, prio_tc);
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
}
if (adapter->dcb_set_bitmap & BIT_PFC) {
u8 pfc_en;
u8 prio_tc[MAX_USER_PRIORITY];
ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
DCB_TX_CONFIG, prio_tc);
ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
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_APP_UPCHG)
clear_bit(__IXGBE_RESETTING, &adapter->state);
adapter->dcb_set_bitmap = 0x00;
return ret;
}