nfp: add DCB IEEE support

Add basic DCB IEEE support. This includes support for ETS, max-rate,
and DSCP to user priority mapping.

DCB may be configured using iproute2's dcb command.
Example usage:
  dcb ets set dev $dev tc-tsa 0:ets 1:ets 2:ets 3:ets 4:ets 5:ets \
    6:ets 7:ets tc-bw 0:0 1:80 2:0 3:0 4:0 5:0 6:20 7:0
  dcb maxrate set dev $dev tc-maxrate 1:1000bit

And DCB configuration can be shown using:
  dcb ets show dev $dev
  dcb maxrate show dev $dev

Signed-off-by: Bin Chen <bin.chen@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230112121102.469739-1-simon.horman@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Bin Chen 2023-01-12 13:11:02 +01:00 committed by Jakub Kicinski
parent bf20ce9f30
commit 9b7fe8046d
5 changed files with 657 additions and 2 deletions

View File

@ -83,3 +83,5 @@ endif
nfp-$(CONFIG_NFP_NET_IPSEC) += crypto/ipsec.o nfd3/ipsec.o
nfp-$(CONFIG_NFP_DEBUG) += nfp_net_debugfs.o
nfp-$(CONFIG_DCB) += nic/dcb.o

View File

@ -413,6 +413,7 @@
#define NFP_NET_CFG_MBOX_CMD_IPSEC 3
#define NFP_NET_CFG_MBOX_CMD_PCI_DSCP_PRIOMAP_SET 5
#define NFP_NET_CFG_MBOX_CMD_TLV_CMSG 6
#define NFP_NET_CFG_MBOX_CMD_DCB_UPDATE 7
#define NFP_NET_CFG_MBOX_CMD_MULTICAST_ADD 8
#define NFP_NET_CFG_MBOX_CMD_MULTICAST_DEL 9

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@ -0,0 +1,571 @@
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2023 Corigine, Inc. */
#include <linux/device.h>
#include <linux/netdevice.h>
#include <net/dcbnl.h>
#include "../nfp_app.h"
#include "../nfp_net.h"
#include "../nfp_main.h"
#include "../nfpcore/nfp_cpp.h"
#include "../nfpcore/nfp_nffw.h"
#include "../nfp_net_sriov.h"
#include "main.h"
#define NFP_DCB_TRUST_PCP 1
#define NFP_DCB_TRUST_DSCP 2
#define NFP_DCB_TRUST_INVALID 0xff
#define NFP_DCB_TSA_VENDOR 1
#define NFP_DCB_TSA_STRICT 2
#define NFP_DCB_TSA_ETS 3
#define NFP_DCB_GBL_ENABLE BIT(0)
#define NFP_DCB_QOS_ENABLE BIT(1)
#define NFP_DCB_DISABLE 0
#define NFP_DCB_ALL_QOS_ENABLE (NFP_DCB_GBL_ENABLE | NFP_DCB_QOS_ENABLE)
#define NFP_DCB_UPDATE_MSK_SZ 4
#define NFP_DCB_TC_RATE_MAX 0xffff
#define NFP_DCB_DATA_OFF_DSCP2IDX 0
#define NFP_DCB_DATA_OFF_PCP2IDX 64
#define NFP_DCB_DATA_OFF_TSA 80
#define NFP_DCB_DATA_OFF_IDX_BW_PCT 88
#define NFP_DCB_DATA_OFF_RATE 96
#define NFP_DCB_DATA_OFF_CAP 112
#define NFP_DCB_DATA_OFF_ENABLE 116
#define NFP_DCB_DATA_OFF_TRUST 120
#define NFP_DCB_MSG_MSK_ENABLE BIT(31)
#define NFP_DCB_MSG_MSK_TRUST BIT(30)
#define NFP_DCB_MSG_MSK_TSA BIT(29)
#define NFP_DCB_MSG_MSK_DSCP BIT(28)
#define NFP_DCB_MSG_MSK_PCP BIT(27)
#define NFP_DCB_MSG_MSK_RATE BIT(26)
#define NFP_DCB_MSG_MSK_PCT BIT(25)
static struct nfp_dcb *get_dcb_priv(struct nfp_net *nn)
{
struct nfp_dcb *dcb = &((struct nfp_app_nic_private *)nn->app_priv)->dcb;
return dcb;
}
static u8 nfp_tsa_ieee2nfp(u8 tsa)
{
switch (tsa) {
case IEEE_8021QAZ_TSA_STRICT:
return NFP_DCB_TSA_STRICT;
case IEEE_8021QAZ_TSA_ETS:
return NFP_DCB_TSA_ETS;
default:
return NFP_DCB_TSA_VENDOR;
}
}
static int nfp_nic_dcbnl_ieee_getets(struct net_device *dev,
struct ieee_ets *ets)
{
struct nfp_net *nn = netdev_priv(dev);
struct nfp_dcb *dcb;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
ets->prio_tc[i] = dcb->prio2tc[i];
ets->tc_tx_bw[i] = dcb->tc_tx_pct[i];
ets->tc_tsa[i] = dcb->tc_tsa[i];
}
return 0;
}
static bool nfp_refresh_tc2idx(struct nfp_net *nn)
{
u8 tc2idx[IEEE_8021QAZ_MAX_TCS];
bool change = false;
struct nfp_dcb *dcb;
int maxstrict = 0;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
tc2idx[i] = i;
if (dcb->tc_tsa[i] == IEEE_8021QAZ_TSA_STRICT)
maxstrict = i;
}
if (maxstrict > 0 && dcb->tc_tsa[0] != IEEE_8021QAZ_TSA_STRICT) {
tc2idx[0] = maxstrict;
tc2idx[maxstrict] = 0;
}
for (unsigned int j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
if (dcb->tc2idx[j] != tc2idx[j]) {
change = true;
dcb->tc2idx[j] = tc2idx[j];
}
}
return change;
}
static int nfp_fill_maxrate(struct nfp_net *nn, u64 *max_rate_array)
{
struct nfp_app *app = nn->app;
struct nfp_dcb *dcb;
u32 ratembps;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
/* Convert bandwidth from kbps to mbps. */
ratembps = max_rate_array[i] / 1024;
/* Reject input values >= NFP_DCB_TC_RATE_MAX */
if (ratembps >= NFP_DCB_TC_RATE_MAX) {
nfp_warn(app->cpp, "ratembps(%d) must less than %d.",
ratembps, NFP_DCB_TC_RATE_MAX);
return -EINVAL;
}
/* Input value 0 mapped to NFP_DCB_TC_RATE_MAX for firmware. */
if (ratembps == 0)
ratembps = NFP_DCB_TC_RATE_MAX;
writew((u16)ratembps, dcb->dcbcfg_tbl +
dcb->cfg_offset + NFP_DCB_DATA_OFF_RATE + dcb->tc2idx[i] * 2);
/* for rate value from user space, need to sync to dcb structure */
if (dcb->tc_maxrate != max_rate_array)
dcb->tc_maxrate[i] = max_rate_array[i];
}
return 0;
}
static int update_dscp_maxrate(struct net_device *dev, u32 *update)
{
struct nfp_net *nn = netdev_priv(dev);
struct nfp_dcb *dcb;
int err;
dcb = get_dcb_priv(nn);
err = nfp_fill_maxrate(nn, dcb->tc_maxrate);
if (err)
return err;
*update |= NFP_DCB_MSG_MSK_RATE;
/* We only refresh dscp in dscp trust mode. */
if (dcb->dscp_cnt > 0) {
for (unsigned int i = 0; i < NFP_NET_MAX_DSCP; i++) {
writeb(dcb->tc2idx[dcb->prio2tc[dcb->dscp2prio[i]]],
dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_DSCP2IDX + i);
}
*update |= NFP_DCB_MSG_MSK_DSCP;
}
return 0;
}
static void nfp_nic_set_trust(struct nfp_net *nn, u32 *update)
{
struct nfp_dcb *dcb;
u8 trust;
dcb = get_dcb_priv(nn);
if (dcb->trust_status != NFP_DCB_TRUST_INVALID)
return;
trust = dcb->dscp_cnt > 0 ? NFP_DCB_TRUST_DSCP : NFP_DCB_TRUST_PCP;
writeb(trust, dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_TRUST);
dcb->trust_status = trust;
*update |= NFP_DCB_MSG_MSK_TRUST;
}
static void nfp_nic_set_enable(struct nfp_net *nn, u32 enable, u32 *update)
{
struct nfp_dcb *dcb;
u32 value = 0;
dcb = get_dcb_priv(nn);
value = readl(dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_ENABLE);
if (value != enable) {
writel(enable, dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_ENABLE);
*update |= NFP_DCB_MSG_MSK_ENABLE;
}
}
static int dcb_ets_check(struct net_device *dev, struct ieee_ets *ets)
{
struct nfp_net *nn = netdev_priv(dev);
struct nfp_app *app = nn->app;
bool ets_exists = false;
int sum = 0;
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
/* For ets mode, check bw percentage sum. */
if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) {
ets_exists = true;
sum += ets->tc_tx_bw[i];
} else if (ets->tc_tx_bw[i]) {
nfp_warn(app->cpp, "ETS BW for strict/vendor TC must be 0.");
return -EINVAL;
}
}
if (ets_exists && sum != 100) {
nfp_warn(app->cpp, "Failed to validate ETS BW: sum must be 100.");
return -EINVAL;
}
return 0;
}
static void nfp_nic_fill_ets(struct nfp_net *nn)
{
struct nfp_dcb *dcb;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
writeb(dcb->tc2idx[dcb->prio2tc[i]],
dcb->dcbcfg_tbl + dcb->cfg_offset + NFP_DCB_DATA_OFF_PCP2IDX + i);
writeb(dcb->tc_tx_pct[i], dcb->dcbcfg_tbl +
dcb->cfg_offset + NFP_DCB_DATA_OFF_IDX_BW_PCT + dcb->tc2idx[i]);
writeb(nfp_tsa_ieee2nfp(dcb->tc_tsa[i]), dcb->dcbcfg_tbl +
dcb->cfg_offset + NFP_DCB_DATA_OFF_TSA + dcb->tc2idx[i]);
}
}
static void nfp_nic_ets_init(struct nfp_net *nn, u32 *update)
{
struct nfp_dcb *dcb = get_dcb_priv(nn);
if (dcb->ets_init)
return;
nfp_nic_fill_ets(nn);
dcb->ets_init = true;
*update |= NFP_DCB_MSG_MSK_TSA | NFP_DCB_MSG_MSK_PCT | NFP_DCB_MSG_MSK_PCP;
}
static int nfp_nic_dcbnl_ieee_setets(struct net_device *dev,
struct ieee_ets *ets)
{
const u32 cmd = NFP_NET_CFG_MBOX_CMD_DCB_UPDATE;
struct nfp_net *nn = netdev_priv(dev);
struct nfp_app *app = nn->app;
struct nfp_dcb *dcb;
u32 update = 0;
bool change;
int err;
err = dcb_ets_check(dev, ets);
if (err)
return err;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
dcb->prio2tc[i] = ets->prio_tc[i];
dcb->tc_tx_pct[i] = ets->tc_tx_bw[i];
dcb->tc_tsa[i] = ets->tc_tsa[i];
}
change = nfp_refresh_tc2idx(nn);
nfp_nic_fill_ets(nn);
dcb->ets_init = true;
if (change || !dcb->rate_init) {
err = update_dscp_maxrate(dev, &update);
if (err) {
nfp_warn(app->cpp,
"nfp dcbnl ieee setets ERROR:%d.",
err);
return err;
}
dcb->rate_init = true;
}
nfp_nic_set_enable(nn, NFP_DCB_ALL_QOS_ENABLE, &update);
nfp_nic_set_trust(nn, &update);
err = nfp_net_mbox_lock(nn, NFP_DCB_UPDATE_MSK_SZ);
if (err)
return err;
nn_writel(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_MBOX_SIMPLE_VAL,
update | NFP_DCB_MSG_MSK_TSA | NFP_DCB_MSG_MSK_PCT |
NFP_DCB_MSG_MSK_PCP);
return nfp_net_mbox_reconfig_and_unlock(nn, cmd);
}
static int nfp_nic_dcbnl_ieee_getmaxrate(struct net_device *dev,
struct ieee_maxrate *maxrate)
{
struct nfp_net *nn = netdev_priv(dev);
struct nfp_dcb *dcb;
dcb = get_dcb_priv(nn);
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
maxrate->tc_maxrate[i] = dcb->tc_maxrate[i];
return 0;
}
static int nfp_nic_dcbnl_ieee_setmaxrate(struct net_device *dev,
struct ieee_maxrate *maxrate)
{
const u32 cmd = NFP_NET_CFG_MBOX_CMD_DCB_UPDATE;
struct nfp_net *nn = netdev_priv(dev);
struct nfp_app *app = nn->app;
struct nfp_dcb *dcb;
u32 update = 0;
int err;
err = nfp_fill_maxrate(nn, maxrate->tc_maxrate);
if (err) {
nfp_warn(app->cpp,
"nfp dcbnl ieee setmaxrate ERROR:%d.",
err);
return err;
}
dcb = get_dcb_priv(nn);
dcb->rate_init = true;
nfp_nic_set_enable(nn, NFP_DCB_ALL_QOS_ENABLE, &update);
nfp_nic_set_trust(nn, &update);
nfp_nic_ets_init(nn, &update);
err = nfp_net_mbox_lock(nn, NFP_DCB_UPDATE_MSK_SZ);
if (err)
return err;
nn_writel(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_MBOX_SIMPLE_VAL,
update | NFP_DCB_MSG_MSK_RATE);
return nfp_net_mbox_reconfig_and_unlock(nn, cmd);
}
static int nfp_nic_set_trust_status(struct nfp_net *nn, u8 status)
{
const u32 cmd = NFP_NET_CFG_MBOX_CMD_DCB_UPDATE;
struct nfp_dcb *dcb;
u32 update = 0;
int err;
dcb = get_dcb_priv(nn);
if (!dcb->rate_init) {
err = nfp_fill_maxrate(nn, dcb->tc_maxrate);
if (err)
return err;
update |= NFP_DCB_MSG_MSK_RATE;
dcb->rate_init = true;
}
err = nfp_net_mbox_lock(nn, NFP_DCB_UPDATE_MSK_SZ);
if (err)
return err;
nfp_nic_ets_init(nn, &update);
writeb(status, dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_TRUST);
nfp_nic_set_enable(nn, NFP_DCB_ALL_QOS_ENABLE, &update);
nn_writel(nn, nn->tlv_caps.mbox_off + NFP_NET_CFG_MBOX_SIMPLE_VAL,
update | NFP_DCB_MSG_MSK_TRUST);
err = nfp_net_mbox_reconfig_and_unlock(nn, cmd);
if (err)
return err;
dcb->trust_status = status;
return 0;
}
static int nfp_nic_set_dscp2prio(struct nfp_net *nn, u8 dscp, u8 prio)
{
const u32 cmd = NFP_NET_CFG_MBOX_CMD_DCB_UPDATE;
struct nfp_dcb *dcb;
u8 idx, tc;
int err;
err = nfp_net_mbox_lock(nn, NFP_DCB_UPDATE_MSK_SZ);
if (err)
return err;
dcb = get_dcb_priv(nn);
tc = dcb->prio2tc[prio];
idx = dcb->tc2idx[tc];
writeb(idx, dcb->dcbcfg_tbl + dcb->cfg_offset +
NFP_DCB_DATA_OFF_DSCP2IDX + dscp);
nn_writel(nn, nn->tlv_caps.mbox_off +
NFP_NET_CFG_MBOX_SIMPLE_VAL, NFP_DCB_MSG_MSK_DSCP);
err = nfp_net_mbox_reconfig_and_unlock(nn, cmd);
if (err)
return err;
dcb->dscp2prio[dscp] = prio;
return 0;
}
static int nfp_nic_dcbnl_ieee_setapp(struct net_device *dev,
struct dcb_app *app)
{
struct nfp_net *nn = netdev_priv(dev);
struct dcb_app old_app;
struct nfp_dcb *dcb;
bool is_new;
int err;
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP)
return -EINVAL;
dcb = get_dcb_priv(nn);
/* Save the old entry info */
old_app.selector = IEEE_8021QAZ_APP_SEL_DSCP;
old_app.protocol = app->protocol;
old_app.priority = dcb->dscp2prio[app->protocol];
/* Check trust status */
if (!dcb->dscp_cnt) {
err = nfp_nic_set_trust_status(nn, NFP_DCB_TRUST_DSCP);
if (err)
return err;
}
/* Check if the new mapping is same as old or in init stage */
if (app->priority != old_app.priority || app->priority == 0) {
err = nfp_nic_set_dscp2prio(nn, app->protocol, app->priority);
if (err)
return err;
}
/* Delete the old entry if exists */
is_new = !!dcb_ieee_delapp(dev, &old_app);
/* Add new entry and update counter */
err = dcb_ieee_setapp(dev, app);
if (err)
return err;
if (is_new)
dcb->dscp_cnt++;
return 0;
}
static int nfp_nic_dcbnl_ieee_delapp(struct net_device *dev,
struct dcb_app *app)
{
struct nfp_net *nn = netdev_priv(dev);
struct nfp_dcb *dcb;
int err;
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP)
return -EINVAL;
dcb = get_dcb_priv(nn);
/* Check if the dcb_app param match fw */
if (app->priority != dcb->dscp2prio[app->protocol])
return -ENOENT;
/* Set fw dscp mapping to 0 */
err = nfp_nic_set_dscp2prio(nn, app->protocol, 0);
if (err)
return err;
/* Delete app from dcb list */
err = dcb_ieee_delapp(dev, app);
if (err)
return err;
/* Decrease dscp counter */
dcb->dscp_cnt--;
/* If no dscp mapping is configured, trust pcp */
if (dcb->dscp_cnt == 0)
return nfp_nic_set_trust_status(nn, NFP_DCB_TRUST_PCP);
return 0;
}
static const struct dcbnl_rtnl_ops nfp_nic_dcbnl_ops = {
/* ieee 802.1Qaz std */
.ieee_getets = nfp_nic_dcbnl_ieee_getets,
.ieee_setets = nfp_nic_dcbnl_ieee_setets,
.ieee_getmaxrate = nfp_nic_dcbnl_ieee_getmaxrate,
.ieee_setmaxrate = nfp_nic_dcbnl_ieee_setmaxrate,
.ieee_setapp = nfp_nic_dcbnl_ieee_setapp,
.ieee_delapp = nfp_nic_dcbnl_ieee_delapp,
};
int nfp_nic_dcb_init(struct nfp_net *nn)
{
struct nfp_app *app = nn->app;
struct nfp_dcb *dcb;
int err;
dcb = get_dcb_priv(nn);
dcb->cfg_offset = NFP_DCB_CFG_STRIDE * nn->id;
dcb->dcbcfg_tbl = nfp_pf_map_rtsym(app->pf, "net.dcbcfg_tbl",
"_abi_dcb_cfg",
dcb->cfg_offset, &dcb->dcbcfg_tbl_area);
if (IS_ERR(dcb->dcbcfg_tbl)) {
if (PTR_ERR(dcb->dcbcfg_tbl) != -ENOENT) {
err = PTR_ERR(dcb->dcbcfg_tbl);
dcb->dcbcfg_tbl = NULL;
nfp_err(app->cpp,
"Failed to map dcbcfg_tbl area, min_size %u.\n",
dcb->cfg_offset);
return err;
}
dcb->dcbcfg_tbl = NULL;
}
if (dcb->dcbcfg_tbl) {
for (unsigned int i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
dcb->prio2tc[i] = i;
dcb->tc2idx[i] = i;
dcb->tc_tx_pct[i] = 0;
dcb->tc_maxrate[i] = 0;
dcb->tc_tsa[i] = IEEE_8021QAZ_TSA_VENDOR;
}
dcb->trust_status = NFP_DCB_TRUST_INVALID;
dcb->rate_init = false;
dcb->ets_init = false;
nn->dp.netdev->dcbnl_ops = &nfp_nic_dcbnl_ops;
}
return 0;
}
void nfp_nic_dcb_clean(struct nfp_net *nn)
{
struct nfp_dcb *dcb;
dcb = get_dcb_priv(nn);
if (dcb->dcbcfg_tbl_area)
nfp_cpp_area_release_free(dcb->dcbcfg_tbl_area);
}

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@ -5,6 +5,8 @@
#include "../nfpcore/nfp_nsp.h"
#include "../nfp_app.h"
#include "../nfp_main.h"
#include "../nfp_net.h"
#include "main.h"
static int nfp_nic_init(struct nfp_app *app)
{
@ -28,13 +30,46 @@ static void nfp_nic_sriov_disable(struct nfp_app *app)
{
}
static int nfp_nic_vnic_init(struct nfp_app *app, struct nfp_net *nn)
{
nfp_nic_dcb_init(nn);
return 0;
}
static int nfp_nic_vnic_alloc(struct nfp_app *app, struct nfp_net *nn,
unsigned int id)
{
struct nfp_app_nic_private *app_pri = nn->app_priv;
int err;
err = nfp_app_nic_vnic_alloc(app, nn, id);
if (err)
return err;
if (sizeof(*app_pri)) {
nn->app_priv = kzalloc(sizeof(*app_pri), GFP_KERNEL);
if (!nn->app_priv)
return -ENOMEM;
}
return 0;
}
static void nfp_nic_vnic_free(struct nfp_app *app, struct nfp_net *nn)
{
kfree(nn->app_priv);
}
const struct nfp_app_type app_nic = {
.id = NFP_APP_CORE_NIC,
.name = "nic",
.init = nfp_nic_init,
.vnic_alloc = nfp_app_nic_vnic_alloc,
.vnic_alloc = nfp_nic_vnic_alloc,
.vnic_free = nfp_nic_vnic_free,
.sriov_enable = nfp_nic_sriov_enable,
.sriov_disable = nfp_nic_sriov_disable,
.vnic_init = nfp_nic_vnic_init,
};

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@ -0,0 +1,46 @@
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
/* Copyright (C) 2023 Corigine, Inc. */
#ifndef __NFP_NIC_H__
#define __NFP_NIC_H__ 1
#include <linux/netdevice.h>
#ifdef CONFIG_DCB
/* DCB feature definitions */
#define NFP_NET_MAX_DSCP 4
#define NFP_NET_MAX_TC IEEE_8021QAZ_MAX_TCS
#define NFP_NET_MAX_PRIO 8
#define NFP_DCB_CFG_STRIDE 256
struct nfp_dcb {
u8 dscp2prio[NFP_NET_MAX_DSCP];
u8 prio2tc[NFP_NET_MAX_PRIO];
u8 tc2idx[IEEE_8021QAZ_MAX_TCS];
u64 tc_maxrate[IEEE_8021QAZ_MAX_TCS];
u8 tc_tx_pct[IEEE_8021QAZ_MAX_TCS];
u8 tc_tsa[IEEE_8021QAZ_MAX_TCS];
u8 dscp_cnt;
u8 trust_status;
bool rate_init;
bool ets_init;
struct nfp_cpp_area *dcbcfg_tbl_area;
u8 __iomem *dcbcfg_tbl;
u32 cfg_offset;
};
int nfp_nic_dcb_init(struct nfp_net *nn);
void nfp_nic_dcb_clean(struct nfp_net *nn);
#else
static inline int nfp_nic_dcb_init(struct nfp_net *nn) {return 0; }
static inline void nfp_nic_dcb_clean(struct nfp_net *nn) {}
#endif
struct nfp_app_nic_private {
#ifdef CONFIG_DCB
struct nfp_dcb dcb;
#endif
};
#endif