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Location: vmkdrivers/vmkdrivers/src_9/drivers/net/ixgbe/ixgbe_dcb_nl.c - annotation
bd21c8aa7237
28.3 KiB
text/x-csrc
ESXi-6.0.0b
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/*******************************************************************************
Intel 10 Gigabit PCI Express Linux driver
Copyright(c) 1999 - 2011 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:
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "ixgbe.h"
#ifdef CONFIG_DCB
#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 */
/**
* ixgbe_get_tc_from_up - get the TC UP is mapped to
* @netdev : the corresponding netdev
* @up: the 802.1p user priority value
*
* Returns : TC, UP is mapped to
*/
static u8 ixgbe_get_tc_from_up(struct net_device *netdev, u8 up)
{
struct ixgbe_adapter *adapter;
u32 up2tc, i;
adapter = netdev_priv(netdev);
/* if up to tc mapping change is pending then use the cache */
if (adapter->dcb_set_bitmap & BIT_PG_RX) {
struct ixgbe_dcb_tc_config *tc_cfg;
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
tc_cfg = &adapter->temp_dcb_cfg.tc_config[i];
if (tc_cfg->path[0].up_to_tc_bitmap & (1 << up))
return i;
}
} else {
/* from user priority to the corresponding traffic class */
switch (adapter->hw.mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTRUP2TC);
up2tc >>= (up * IXGBE_RTRUP2TC_UP_SHIFT);
up2tc &= (IXGBE_DCB_MAX_TRAFFIC_CLASS - 1);
break;
default:
up2tc = up;
break;
}
return (u8)up2tc;
}
return 0;
}
/*
* ESX only support 2 TC. We need to adjust the dcb configurations from switch
* to use only two TCs one for fcoe and other for LAN
*
*/
static void ixgbe_adjust_dcb_cfg(struct net_device *netdev,
struct ixgbe_dcb_config *dcb_cfg)
{
struct ixgbe_adapter *adapter;
u8 tc, bw_pct, pfc_setting;
int i, j;
adapter = netdev_priv(netdev);
tc = ixgbe_get_tc_from_up(netdev, adapter->fcoe.up);
bw_pct = dcb_cfg->bw_percentage[0][tc];
pfc_setting = dcb_cfg->tc_config[tc].pfc;
adapter->dcb_set_bitmap &= BIT_APP_UPCHG;
for (j = 0; j < 2; j++) {
for (i = 0; i < adapter->dcb_cfg.num_tcs.pg_tcs; i++) {
dcb_cfg->tc_config[i].path[j].bwg_percent = 100;
dcb_cfg->tc_config[i].path[j].bwg_id = i;
dcb_cfg->tc_config[i].pfc = 0;
/* Map fcoe up to fcoe tc. rest UPs are mapped to TC0 */
if (i == 0) {
dcb_cfg->tc_config[i].path[j].up_to_tc_bitmap =
0xff & ~(1 << adapter->fcoe.up);
dcb_cfg->bw_percentage[j][i] = (100 - bw_pct);
} else if (i == adapter->fcoe.tc) {
dcb_cfg->tc_config[i].path[j].up_to_tc_bitmap =
(1 << adapter->fcoe.up);
dcb_cfg->bw_percentage[j][i] = bw_pct;
dcb_cfg->tc_config[i].pfc = pfc_setting;
} else {
dcb_cfg->tc_config[i].path[j].up_to_tc_bitmap = 0;
dcb_cfg->bw_percentage[j][i] = 0;
}
}
}
if (dcb_cfg->pfc_mode_enable != adapter->dcb_cfg.pfc_mode_enable)
adapter->dcb_set_bitmap |= BIT_PFC;
for (j = 0; j < 2; j++) {
for (i = 0; i < adapter->dcb_cfg.num_tcs.pg_tcs; i++) {
/* perform check for the changes. */
if ((dcb_cfg->tc_config[i].path[j].up_to_tc_bitmap !=
adapter->dcb_cfg.tc_config[i].path[j].up_to_tc_bitmap) ||
(dcb_cfg->bw_percentage[j][i] !=
adapter->dcb_cfg.bw_percentage[j][i]) ||
(dcb_cfg->tc_config[i].path[j].bwg_id !=
adapter->dcb_cfg.tc_config[i].path[j].bwg_id) ||
(dcb_cfg->tc_config[i].path[j].bwg_percent !=
adapter->dcb_cfg.tc_config[i].path[j].bwg_percent)) {
adapter->dcb_set_bitmap |= j ? BIT_PG_RX : BIT_PG_TX;
}
if (dcb_cfg->tc_config[i].pfc !=
adapter->dcb_cfg.tc_config[i].pfc) {
adapter->dcb_set_bitmap |= BIT_PFC;
}
}
}
DPRINTK(PROBE, INFO, "dcb_set_bitmap(%x)\n", adapter->dcb_set_bitmap);
}
int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
{
struct ixgbe_dcb_tc_config *src_tc_cfg = NULL;
struct ixgbe_dcb_tc_config *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[IXGBE_DCB_TX_CONFIG].tsa =
src_tc_cfg->path[IXGBE_DCB_TX_CONFIG].tsa;
dst_tc_cfg->path[IXGBE_DCB_TX_CONFIG].bwg_id =
src_tc_cfg->path[IXGBE_DCB_TX_CONFIG].bwg_id;
dst_tc_cfg->path[IXGBE_DCB_TX_CONFIG].bwg_percent =
src_tc_cfg->path[IXGBE_DCB_TX_CONFIG].bwg_percent;
dst_tc_cfg->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap =
src_tc_cfg->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap;
dst_tc_cfg->path[IXGBE_DCB_RX_CONFIG].tsa =
src_tc_cfg->path[IXGBE_DCB_RX_CONFIG].tsa;
dst_tc_cfg->path[IXGBE_DCB_RX_CONFIG].bwg_id =
src_tc_cfg->path[IXGBE_DCB_RX_CONFIG].bwg_id;
dst_tc_cfg->path[IXGBE_DCB_RX_CONFIG].bwg_percent =
src_tc_cfg->path[IXGBE_DCB_RX_CONFIG].bwg_percent;
dst_tc_cfg->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap =
src_tc_cfg->path[IXGBE_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[IXGBE_DCB_TX_CONFIG]
[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
[IXGBE_DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
dst_dcb_cfg->bw_percentage[IXGBE_DCB_RX_CONFIG]
[i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
[IXGBE_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].pfc =
src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].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) {
/* 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;
}
#ifndef HAVE_MQPRIO
adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
#endif
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
switch (adapter->hw.mac.type) {
case ixgbe_mac_82598EB:
adapter->last_lfc_mode = adapter->hw.fc.current_mode;
adapter->hw.fc.requested_mode = ixgbe_fc_none;
break;
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
e_info(drv, "DCB enabled, disabling ATR\n");
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
break;
default:
break;
}
ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
} else {
/* Turn off DCB */
if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
goto out;
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;
switch (adapter->hw.mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
break;
default:
break;
}
ixgbe_setup_tc(netdev, 0);
}
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];
switch (adapter->hw.mac.type) {
case ixgbe_mac_82599EB:
case ixgbe_mac_X540:
for (j = 0; j < netdev->addr_len; j++, i++)
perm_addr[i] = adapter->hw.mac.san_addr[j];
break;
default:
break;
}
}
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);
/* Abort a bad configuration */
if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
return;
if (prio != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[0].tsa = 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].tsa !=
adapter->dcb_cfg.tc_config[tc].path[0].tsa) ||
(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;
if (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_PFC;
}
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;
}
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);
/* Abort a bad configuration */
if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
return;
if (prio != DCB_ATTR_VALUE_UNDEFINED)
adapter->temp_dcb_cfg.tc_config[tc].path[1].tsa = 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].tsa !=
adapter->dcb_cfg.tc_config[tc].path[1].tsa) ||
(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;
if (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_PFC;
}
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;
}
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].tsa;
*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].tsa;
*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)
{
u8 tc = priority;
struct ixgbe_adapter *adapter = netdev_priv(netdev);
tc = ixgbe_get_tc_from_up(netdev, priority);
adapter->temp_dcb_cfg.tc_config[tc].pfc = setting;
if (adapter->temp_dcb_cfg.tc_config[tc].pfc !=
adapter->dcb_cfg.tc_config[tc].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)
{
u8 tc = priority;
struct ixgbe_adapter *adapter = netdev_priv(netdev);
tc = ixgbe_get_tc_from_up(netdev, priority);
*setting = adapter->dcb_cfg.tc_config[tc].pfc;
}
static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int ret = DCB_NO_HW_CHG;
u8 prio_tc[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 };
u8 pfc_en;
ixgbe_adjust_dcb_cfg(netdev, &adapter->temp_dcb_cfg);
if (!adapter->dcb_set_bitmap)
return DCB_NO_HW_CHG;
ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
IXGBE_DCB_MAX_TRAFFIC_CLASS);
if (ret)
return DCB_NO_HW_CHG;
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;
}
}
ixgbe_dcb_unpack_map_cee(&adapter->dcb_cfg,
IXGBE_DCB_TX_CONFIG,
prio_tc);
if (adapter->dcb_set_bitmap & (BIT_PG_TX | BIT_PG_RX)) {
/* Priority to TC mapping in CEE case default to 1:1 */
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
#ifdef HAVE_MQPRIO
int i;
#endif
#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_cee(&adapter->hw,
&adapter->dcb_cfg,
max_frame,
IXGBE_DCB_TX_CONFIG);
ixgbe_dcb_calculate_tc_credits_cee(&adapter->hw,
&adapter->dcb_cfg,
max_frame,
IXGBE_DCB_RX_CONFIG);
ixgbe_dcb_hw_config_cee(&adapter->hw, &adapter->dcb_cfg);
#ifdef HAVE_MQPRIO
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
#endif /* HAVE_MQPRIO */
}
if (adapter->dcb_set_bitmap & BIT_PFC) {
ixgbe_dcb_unpack_pfc_cee(&adapter->dcb_cfg, prio_tc, &pfc_en);
ixgbe_dcb_config_pfc(&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;
#ifdef IXGBE_FCOE
if (adapter->fcoe.up_set != adapter->fcoe.up) {
adapter->fcoe.up_set = adapter->fcoe.up;
ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
}
#endif /* IXGBE_FCOE */
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;
case DCB_CAP_ATTR_DCBX:
*cap = adapter->dcbx_cap;
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 = adapter->dcb_cfg.num_tcs.pg_tcs;
break;
case DCB_NUMTCS_ATTR_PFC:
*num = adapter->dcb_cfg.num_tcs.pfc_tcs;
break;
default:
rval = -EINVAL;
break;
}
} else {
rval = -EINVAL;
}
return rval;
}
static u8 ixgbe_dcbnl_setnumtcs(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:
adapter->dcb_cfg.num_tcs.pg_tcs = num;
break;
case DCB_NUMTCS_ATTR_PFC:
adapter->dcb_cfg.num_tcs.pfc_tcs = num;
break;
default:
rval = -EINVAL;
break;
}
} else {
rval = -EINVAL;
}
return rval;
}
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;
return;
}
#ifdef HAVE_DCBNL_OPS_GETAPP
/**
* 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)
{
int err = 0;
switch (idtype) {
case DCB_APP_IDTYPE_ETHTYPE:
#ifdef IXGBE_FCOE
if (id == ETH_P_FCOE) {
struct ixgbe_adapter *adapter = netdev_priv(netdev);
adapter->fcoe.up = ffs(up) - 1;
}
#endif
break;
case DCB_APP_IDTYPE_PORTNUM:
break;
default:
break;
}
return err;
}
#endif /* HAVE_DCBNL_OPS_GETAPP */
static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
struct ieee_ets *ets)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
/* No IEEE PFC settings available */
if (!my_ets)
return -EINVAL;
ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
ets->cbs = my_ets->cbs;
memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
return 0;
}
static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
struct ieee_ets *ets)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
int i;
__u8 max_tc = 0;
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
return -EINVAL;
if (!adapter->ixgbe_ieee_ets) {
adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
GFP_KERNEL);
if (!adapter->ixgbe_ieee_ets)
return -ENOMEM;
}
memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
if (ets->prio_tc[i] > max_tc)
max_tc = ets->prio_tc[i];
}
if (max_tc)
max_tc++;
if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
return -EINVAL;
if (max_tc != netdev_get_num_tc(dev))
ixgbe_setup_tc(dev, max_tc);
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
}
static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
struct ieee_pfc *pfc)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
int i;
/* No IEEE PFC settings available */
if (!my_pfc)
return -EINVAL;
pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
pfc->pfc_en = my_pfc->pfc_en;
pfc->mbc = my_pfc->mbc;
pfc->delay = my_pfc->delay;
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
pfc->requests[i] = adapter->stats.pxoffrxc[i];
pfc->indications[i] = adapter->stats.pxofftxc[i];
}
return 0;
}
static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
struct ieee_pfc *pfc)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
u8 *prio_tc;
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
return -EINVAL;
if (!adapter->ixgbe_ieee_pfc) {
adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
GFP_KERNEL);
if (!adapter->ixgbe_ieee_pfc)
return -ENOMEM;
}
prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
return ixgbe_dcb_config_pfc(&adapter->hw, pfc->pfc_en, &prio_tc);
}
#ifdef IXGBE_FCOE
static void ixgbe_dcbnl_devreset(struct net_device *dev)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
if (netif_running(dev))
#ifdef HAVE_NET_DEVICE_OPS
dev->netdev_ops->ndo_stop(dev);
#else
dev->stop(dev);
#endif
ixgbe_clear_interrupt_scheme(adapter);
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(dev))
#ifdef HAVE_NET_DEVICE_OPS
dev->netdev_ops->ndo_open(dev);
#else
dev->open(dev);
#endif
}
#endif
static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
struct dcb_app *app)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
int err = -EINVAL;
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
return err;
#ifdef IXGBE_FCOE
if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_FCOE) {
u8 app_mask = dcb_ieee_getapp_mask(dev, app);
if (app_mask & (1 << adapter->fcoe.up))
return err;
adapter->fcoe.up = app->priority;
adapter->fcoe.up_set = adapter->fcoe.up;
ixgbe_dcbnl_devreset(dev);
}
#endif
return 0;
}
#ifdef HAVE_DCBNL_IEEE_DELAPP
static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
struct dcb_app *app)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
int err;
if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
return -EINVAL;
err = dcb_ieee_delapp(dev, app);
#ifdef IXGBE_FCOE
if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_FCOE) {
u8 app_mask = dcb_ieee_getapp_mask(dev, app);
if (app_mask & (1 << adapter->fcoe.up))
return err;
adapter->fcoe.up = app_mask ?
ffs(app_mask) - 1 : IXGBE_FCOE_DEFUP;
ixgbe_dcbnl_devreset(dev);
}
#endif
return err;
}
#endif /* HAVE_DCBNL_IEEE_DELAPP */
static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
return adapter->dcbx_cap;
}
static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
{
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ieee_ets ets = {0};
struct ieee_pfc pfc = {0};
int err = 0;
/* 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 1;
if (mode == adapter->dcbx_cap)
return 0;
adapter->dcbx_cap = mode;
/* ETS and PFC defaults */
ets.ets_cap = 8;
pfc.pfc_cap = 8;
if (mode & DCB_CAP_DCBX_VER_IEEE) {
ixgbe_dcbnl_ieee_setets(dev, &ets);
ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
} else if (mode & DCB_CAP_DCBX_VER_CEE) {
u8 mask = (BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG);
adapter->dcb_set_bitmap |= mask;
ixgbe_dcbnl_set_all(dev);
} else {
/* Drop into single TC mode strict priority as this
* indicates CEE and IEEE versions are disabled
*/
ixgbe_dcbnl_ieee_setets(dev, &ets);
ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
err = ixgbe_setup_tc(dev, 0);
}
return err ? 1 : 0;
}
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,
#ifdef HAVE_DCBNL_OPS_GETAPP
.getapp = ixgbe_dcbnl_getapp,
.setapp = ixgbe_dcbnl_setapp,
#endif
.getdcbx = ixgbe_dcbnl_getdcbx,
.setdcbx = ixgbe_dcbnl_setdcbx,
.ieee_getets = ixgbe_dcbnl_ieee_getets,
.ieee_setets = ixgbe_dcbnl_ieee_setets,
.ieee_getpfc = ixgbe_dcbnl_ieee_getpfc,
.ieee_setpfc = ixgbe_dcbnl_ieee_setpfc,
.ieee_setapp = ixgbe_dcbnl_ieee_setapp,
#ifdef HAVE_DCBNL_IEEE_DELAPP
.ieee_delapp = ixgbe_dcbnl_ieee_delapp,
#endif
};
#endif
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