#include <linux/netdevice.h>
#include <linux/string.h>
#include <linux/bitops.h>
#include <net/dcbnl.h>
#include "spectrum.h"
#include "reg.h"
static u8 mlxsw_sp_dcbnl_getdcbx(struct net_device __always_unused *dev)
{
return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
}
static u8 mlxsw_sp_dcbnl_setdcbx(struct net_device __always_unused *dev,
u8 mode)
{
return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
}
static int mlxsw_sp_dcbnl_ieee_getets(struct net_device *dev,
struct ieee_ets *ets)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
memcpy(ets, mlxsw_sp_port->dcb.ets, sizeof(*ets));
return 0;
}
static int mlxsw_sp_port_ets_validate(struct mlxsw_sp_port *mlxsw_sp_port,
struct ieee_ets *ets)
{
struct net_device *dev = mlxsw_sp_port->dev;
bool has_ets_tc = false;
int i, tx_bw_sum = 0;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
switch (ets->tc_tsa[i]) {
case IEEE_8021QAZ_TSA_STRICT:
break;
case IEEE_8021QAZ_TSA_ETS:
has_ets_tc = true;
tx_bw_sum += ets->tc_tx_bw[i];
break;
default:
netdev_err(dev, "Only strict priority and ETS are supported\n");
return -EINVAL;
}
if (ets->prio_tc[i] >= IEEE_8021QAZ_MAX_TCS) {
netdev_err(dev, "Invalid TC\n");
return -EINVAL;
}
}
if (has_ets_tc && tx_bw_sum != 100) {
netdev_err(dev, "Total ETS bandwidth should equal 100\n");
return -EINVAL;
}
return 0;
}
static int mlxsw_sp_port_headroom_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct ieee_ets *ets)
{
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_hdroom hdroom;
int prio;
int err;
hdroom = *mlxsw_sp_port->hdroom;
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
hdroom.prios.prio[prio].ets_buf_idx = ets->prio_tc[prio];
mlxsw_sp_hdroom_prios_reset_buf_idx(&hdroom);
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom);
err = mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom);
if (err) {
netdev_err(dev, "Failed to configure port's headroom\n");
return err;
}
return 0;
}
static int __mlxsw_sp_dcbnl_ieee_setets(struct mlxsw_sp_port *mlxsw_sp_port,
struct ieee_ets *ets)
{
struct ieee_ets *my_ets = mlxsw_sp_port->dcb.ets;
struct net_device *dev = mlxsw_sp_port->dev;
int i, err;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
bool dwrr = ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS;
u8 weight = ets->tc_tx_bw[i];
err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HR_SUBGROUP, i,
0, dwrr, weight);
if (err) {
netdev_err(dev, "Failed to link subgroup ETS element %d to group\n",
i);
goto err_port_ets_set;
}
}
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i,
ets->prio_tc[i]);
if (err) {
netdev_err(dev, "Failed to map prio %d to TC %d\n", i,
ets->prio_tc[i]);
goto err_port_prio_tc_set;
}
}
err = mlxsw_sp_port_headroom_ets_set(mlxsw_sp_port, ets);
if (err)
goto err_port_headroom_set;
return 0;
err_port_headroom_set:
i = IEEE_8021QAZ_MAX_TCS;
err_port_prio_tc_set:
for (i--; i >= 0; i--)
mlxsw_sp_port_prio_tc_set(mlxsw_sp_port, i, my_ets->prio_tc[i]);
i = IEEE_8021QAZ_MAX_TCS;
err_port_ets_set:
for (i--; i >= 0; i--) {
bool dwrr = my_ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS;
u8 weight = my_ets->tc_tx_bw[i];
err = mlxsw_sp_port_ets_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HR_SUBGROUP, i,
0, dwrr, weight);
}
return err;
}
static int mlxsw_sp_dcbnl_ieee_setets(struct net_device *dev,
struct ieee_ets *ets)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
err = mlxsw_sp_port_ets_validate(mlxsw_sp_port, ets);
if (err)
return err;
err = __mlxsw_sp_dcbnl_ieee_setets(mlxsw_sp_port, ets);
if (err)
return err;
memcpy(mlxsw_sp_port->dcb.ets, ets, sizeof(*ets));
mlxsw_sp_port->dcb.ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
return 0;
}
static int mlxsw_sp_dcbnl_app_validate(struct net_device *dev,
struct dcb_app *app)
{
if (app->priority >= IEEE_8021QAZ_MAX_TCS) {
netdev_err(dev, "APP entry with priority value %u is invalid\n",
app->priority);
return -EINVAL;
}
switch (app->selector) {
case IEEE_8021QAZ_APP_SEL_DSCP:
if (app->protocol >= 64) {
netdev_err(dev, "DSCP APP entry with protocol value %u is invalid\n",
app->protocol);
return -EINVAL;
}
break;
case IEEE_8021QAZ_APP_SEL_ETHERTYPE:
if (app->protocol) {
netdev_err(dev, "EtherType APP entries with protocol value != 0 not supported\n");
return -EINVAL;
}
break;
default:
netdev_err(dev, "APP entries with selector %u not supported\n",
app->selector);
return -EINVAL;
}
return 0;
}
static u8
mlxsw_sp_port_dcb_app_default_prio(struct mlxsw_sp_port *mlxsw_sp_port)
{
u8 prio_mask;
prio_mask = dcb_ieee_getapp_default_prio_mask(mlxsw_sp_port->dev);
if (prio_mask)
return fls(prio_mask) - 1;
return 0;
}
static void
mlxsw_sp_port_dcb_app_dscp_prio_map(struct mlxsw_sp_port *mlxsw_sp_port,
u8 default_prio,
struct dcb_ieee_app_dscp_map *map)
{
int i;
dcb_ieee_getapp_dscp_prio_mask_map(mlxsw_sp_port->dev, map);
for (i = 0; i < ARRAY_SIZE(map->map); ++i) {
if (map->map[i])
map->map[i] = fls(map->map[i]) - 1;
else
map->map[i] = default_prio;
}
}
static bool
mlxsw_sp_port_dcb_app_prio_dscp_map(struct mlxsw_sp_port *mlxsw_sp_port,
struct dcb_ieee_app_prio_map *map)
{
bool have_dscp = false;
int i;
dcb_ieee_getapp_prio_dscp_mask_map(mlxsw_sp_port->dev, map);
for (i = 0; i < ARRAY_SIZE(map->map); ++i) {
if (map->map[i]) {
map->map[i] = fls64(map->map[i]) - 1;
have_dscp = true;
}
}
return have_dscp;
}
static int
mlxsw_sp_port_dcb_app_update_qpts(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qpts_trust_state ts)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qpts_pl[MLXSW_REG_QPTS_LEN];
mlxsw_reg_qpts_pack(qpts_pl, mlxsw_sp_port->local_port, ts);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpts), qpts_pl);
}
static int
mlxsw_sp_port_dcb_app_update_qrwe(struct mlxsw_sp_port *mlxsw_sp_port,
bool rewrite_dscp)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qrwe_pl[MLXSW_REG_QRWE_LEN];
mlxsw_reg_qrwe_pack(qrwe_pl, mlxsw_sp_port->local_port,
false, rewrite_dscp);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qrwe), qrwe_pl);
}
static int
mlxsw_sp_port_dcb_toggle_trust(struct mlxsw_sp_port *mlxsw_sp_port,
enum mlxsw_reg_qpts_trust_state ts)
{
bool rewrite_dscp = ts == MLXSW_REG_QPTS_TRUST_STATE_DSCP;
int err;
if (mlxsw_sp_port->dcb.trust_state == ts)
return 0;
err = mlxsw_sp_port_dcb_app_update_qpts(mlxsw_sp_port, ts);
if (err)
return err;
err = mlxsw_sp_port_dcb_app_update_qrwe(mlxsw_sp_port, rewrite_dscp);
if (err)
goto err_update_qrwe;
mlxsw_sp_port->dcb.trust_state = ts;
return 0;
err_update_qrwe:
mlxsw_sp_port_dcb_app_update_qpts(mlxsw_sp_port,
mlxsw_sp_port->dcb.trust_state);
return err;
}
static int
mlxsw_sp_port_dcb_app_update_qpdp(struct mlxsw_sp_port *mlxsw_sp_port,
u8 default_prio)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qpdp_pl[MLXSW_REG_QPDP_LEN];
mlxsw_reg_qpdp_pack(qpdp_pl, mlxsw_sp_port->local_port, default_prio);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdp), qpdp_pl);
}
static int
mlxsw_sp_port_dcb_app_update_qpdpm(struct mlxsw_sp_port *mlxsw_sp_port,
struct dcb_ieee_app_dscp_map *map)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qpdpm_pl[MLXSW_REG_QPDPM_LEN];
short int i;
mlxsw_reg_qpdpm_pack(qpdpm_pl, mlxsw_sp_port->local_port);
for (i = 0; i < ARRAY_SIZE(map->map); ++i)
mlxsw_reg_qpdpm_dscp_pack(qpdpm_pl, i, map->map[i]);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdpm), qpdpm_pl);
}
static int
mlxsw_sp_port_dcb_app_update_qpdsm(struct mlxsw_sp_port *mlxsw_sp_port,
struct dcb_ieee_app_prio_map *map)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char qpdsm_pl[MLXSW_REG_QPDSM_LEN];
short int i;
mlxsw_reg_qpdsm_pack(qpdsm_pl, mlxsw_sp_port->local_port);
for (i = 0; i < ARRAY_SIZE(map->map); ++i)
mlxsw_reg_qpdsm_prio_pack(qpdsm_pl, i, map->map[i]);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpdsm), qpdsm_pl);
}
static int mlxsw_sp_port_dcb_app_update(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct dcb_ieee_app_prio_map prio_map;
struct dcb_ieee_app_dscp_map dscp_map;
u8 default_prio;
bool have_dscp;
int err;
default_prio = mlxsw_sp_port_dcb_app_default_prio(mlxsw_sp_port);
err = mlxsw_sp_port_dcb_app_update_qpdp(mlxsw_sp_port, default_prio);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Couldn't configure port default priority\n");
return err;
}
have_dscp = mlxsw_sp_port_dcb_app_prio_dscp_map(mlxsw_sp_port,
&prio_map);
mlxsw_sp_port_dcb_app_dscp_prio_map(mlxsw_sp_port, default_prio,
&dscp_map);
err = mlxsw_sp_port_dcb_app_update_qpdpm(mlxsw_sp_port,
&dscp_map);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Couldn't configure priority map\n");
return err;
}
err = mlxsw_sp_port_dcb_app_update_qpdsm(mlxsw_sp_port,
&prio_map);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Couldn't configure DSCP rewrite map\n");
return err;
}
if (!have_dscp) {
err = mlxsw_sp_port_dcb_toggle_trust(mlxsw_sp_port,
MLXSW_REG_QPTS_TRUST_STATE_PCP);
if (err)
netdev_err(mlxsw_sp_port->dev, "Couldn't switch to trust L2\n");
return err;
}
err = mlxsw_sp_port_dcb_toggle_trust(mlxsw_sp_port,
MLXSW_REG_QPTS_TRUST_STATE_DSCP);
if (err) {
netdev_err(mlxsw_sp_port->dev, "Couldn't switch to trust L3\n");
return err;
}
return 0;
}
static int mlxsw_sp_dcbnl_ieee_setapp(struct net_device *dev,
struct dcb_app *app)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
err = mlxsw_sp_dcbnl_app_validate(dev, app);
if (err)
return err;
err = dcb_ieee_setapp(dev, app);
if (err)
return err;
err = mlxsw_sp_port_dcb_app_update(mlxsw_sp_port);
if (err)
goto err_update;
return 0;
err_update:
dcb_ieee_delapp(dev, app);
return err;
}
static int mlxsw_sp_dcbnl_ieee_delapp(struct net_device *dev,
struct dcb_app *app)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
err = dcb_ieee_delapp(dev, app);
if (err)
return err;
err = mlxsw_sp_port_dcb_app_update(mlxsw_sp_port);
if (err)
netdev_err(dev, "Failed to update DCB APP configuration\n");
return 0;
}
static int mlxsw_sp_dcbnl_ieee_getmaxrate(struct net_device *dev,
struct ieee_maxrate *maxrate)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
memcpy(maxrate, mlxsw_sp_port->dcb.maxrate, sizeof(*maxrate));
return 0;
}
static int mlxsw_sp_dcbnl_ieee_setmaxrate(struct net_device *dev,
struct ieee_maxrate *maxrate)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct ieee_maxrate *my_maxrate = mlxsw_sp_port->dcb.maxrate;
int err, i;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HR_SUBGROUP,
i, 0,
maxrate->tc_maxrate[i], 0);
if (err) {
netdev_err(dev, "Failed to set maxrate for TC %d\n", i);
goto err_port_ets_maxrate_set;
}
}
memcpy(mlxsw_sp_port->dcb.maxrate, maxrate, sizeof(*maxrate));
return 0;
err_port_ets_maxrate_set:
for (i--; i >= 0; i--)
mlxsw_sp_port_ets_maxrate_set(mlxsw_sp_port,
MLXSW_REG_QEEC_HR_SUBGROUP,
i, 0,
my_maxrate->tc_maxrate[i], 0);
return err;
}
static int mlxsw_sp_port_pfc_cnt_get(struct mlxsw_sp_port *mlxsw_sp_port,
u8 prio)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct ieee_pfc *my_pfc = mlxsw_sp_port->dcb.pfc;
char ppcnt_pl[MLXSW_REG_PPCNT_LEN];
int err;
mlxsw_reg_ppcnt_pack(ppcnt_pl, mlxsw_sp_port->local_port,
MLXSW_REG_PPCNT_PRIO_CNT, prio);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ppcnt), ppcnt_pl);
if (err)
return err;
my_pfc->requests[prio] = mlxsw_reg_ppcnt_tx_pause_get(ppcnt_pl);
my_pfc->indications[prio] = mlxsw_reg_ppcnt_rx_pause_get(ppcnt_pl);
return 0;
}
static int mlxsw_sp_dcbnl_ieee_getpfc(struct net_device *dev,
struct ieee_pfc *pfc)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err, i;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
err = mlxsw_sp_port_pfc_cnt_get(mlxsw_sp_port, i);
if (err) {
netdev_err(dev, "Failed to get PFC count for priority %d\n",
i);
return err;
}
}
memcpy(pfc, mlxsw_sp_port->dcb.pfc, sizeof(*pfc));
return 0;
}
static int mlxsw_sp_port_pfc_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct ieee_pfc *pfc)
{
char pfcc_pl[MLXSW_REG_PFCC_LEN];
mlxsw_reg_pfcc_pack(pfcc_pl, mlxsw_sp_port->local_port);
mlxsw_reg_pfcc_pprx_set(pfcc_pl, mlxsw_sp_port->link.rx_pause);
mlxsw_reg_pfcc_pptx_set(pfcc_pl, mlxsw_sp_port->link.tx_pause);
mlxsw_reg_pfcc_prio_pack(pfcc_pl, pfc->pfc_en);
return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pfcc),
pfcc_pl);
}
static int mlxsw_sp_dcbnl_ieee_setpfc(struct net_device *dev,
struct ieee_pfc *pfc)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
bool pause_en = mlxsw_sp_port_is_pause_en(mlxsw_sp_port);
struct mlxsw_sp_hdroom orig_hdroom;
struct mlxsw_sp_hdroom hdroom;
int prio;
int err;
if (pause_en && pfc->pfc_en) {
netdev_err(dev, "PAUSE frames already enabled on port\n");
return -EINVAL;
}
orig_hdroom = *mlxsw_sp_port->hdroom;
hdroom = orig_hdroom;
if (pfc->pfc_en)
hdroom.delay_bytes = DIV_ROUND_UP(pfc->delay, BITS_PER_BYTE);
else
hdroom.delay_bytes = 0;
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
hdroom.prios.prio[prio].lossy = !(pfc->pfc_en & BIT(prio));
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom);
err = mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom);
if (err) {
netdev_err(dev, "Failed to configure port's headroom for PFC\n");
return err;
}
err = mlxsw_sp_port_pfc_set(mlxsw_sp_port, pfc);
if (err) {
netdev_err(dev, "Failed to configure PFC\n");
goto err_port_pfc_set;
}
memcpy(mlxsw_sp_port->dcb.pfc, pfc, sizeof(*pfc));
mlxsw_sp_port->dcb.pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
return 0;
err_port_pfc_set:
mlxsw_sp_hdroom_configure(mlxsw_sp_port, &orig_hdroom);
return err;
}
static int mlxsw_sp_dcbnl_getbuffer(struct net_device *dev, struct dcbnl_buffer *buf)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp_hdroom *hdroom = mlxsw_sp_port->hdroom;
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
int prio;
int i;
buf->total_size = 0;
BUILD_BUG_ON(DCBX_MAX_BUFFERS > MLXSW_SP_PB_COUNT);
for (i = 0; i < MLXSW_SP_PB_COUNT; i++) {
u32 bytes = mlxsw_sp_cells_bytes(mlxsw_sp, hdroom->bufs.buf[i].size_cells);
if (i < DCBX_MAX_BUFFERS)
buf->buffer_size[i] = bytes;
buf->total_size += bytes;
}
buf->total_size += mlxsw_sp_cells_bytes(mlxsw_sp, hdroom->int_buf.size_cells);
for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++)
buf->prio2buffer[prio] = hdroom->prios.prio[prio].buf_idx;
return 0;
}
static int mlxsw_sp_dcbnl_setbuffer(struct net_device *dev, struct dcbnl_buffer *buf)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_hdroom hdroom;
int prio;
int i;
hdroom = *mlxsw_sp_port->hdroom;
if (hdroom.mode != MLXSW_SP_HDROOM_MODE_TC) {
netdev_err(dev, "The use of dcbnl_setbuffer is only allowed if egress is configured using TC\n");
return -EINVAL;
}
for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++)
hdroom.prios.prio[prio].set_buf_idx = buf->prio2buffer[prio];
BUILD_BUG_ON(DCBX_MAX_BUFFERS > MLXSW_SP_PB_COUNT);
for (i = 0; i < DCBX_MAX_BUFFERS; i++)
hdroom.bufs.buf[i].set_size_cells = mlxsw_sp_bytes_cells(mlxsw_sp,
buf->buffer_size[i]);
mlxsw_sp_hdroom_prios_reset_buf_idx(&hdroom);
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom);
return mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom);
}
static const struct dcbnl_rtnl_ops mlxsw_sp_dcbnl_ops = {
.ieee_getets = mlxsw_sp_dcbnl_ieee_getets,
.ieee_setets = mlxsw_sp_dcbnl_ieee_setets,
.ieee_getmaxrate = mlxsw_sp_dcbnl_ieee_getmaxrate,
.ieee_setmaxrate = mlxsw_sp_dcbnl_ieee_setmaxrate,
.ieee_getpfc = mlxsw_sp_dcbnl_ieee_getpfc,
.ieee_setpfc = mlxsw_sp_dcbnl_ieee_setpfc,
.ieee_setapp = mlxsw_sp_dcbnl_ieee_setapp,
.ieee_delapp = mlxsw_sp_dcbnl_ieee_delapp,
.getdcbx = mlxsw_sp_dcbnl_getdcbx,
.setdcbx = mlxsw_sp_dcbnl_setdcbx,
.dcbnl_getbuffer = mlxsw_sp_dcbnl_getbuffer,
.dcbnl_setbuffer = mlxsw_sp_dcbnl_setbuffer,
};
static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->dcb.ets = kzalloc_obj(*mlxsw_sp_port->dcb.ets);
if (!mlxsw_sp_port->dcb.ets)
return -ENOMEM;
mlxsw_sp_port->dcb.ets->ets_cap = IEEE_8021QAZ_MAX_TCS;
return 0;
}
static void mlxsw_sp_port_ets_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
kfree(mlxsw_sp_port->dcb.ets);
}
static int mlxsw_sp_port_maxrate_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
int i;
mlxsw_sp_port->dcb.maxrate = kmalloc_obj(*mlxsw_sp_port->dcb.maxrate);
if (!mlxsw_sp_port->dcb.maxrate)
return -ENOMEM;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
mlxsw_sp_port->dcb.maxrate->tc_maxrate[i] = MLXSW_REG_QEEC_MAS_DIS;
return 0;
}
static void mlxsw_sp_port_maxrate_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
kfree(mlxsw_sp_port->dcb.maxrate);
}
static int mlxsw_sp_port_pfc_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->dcb.pfc = kzalloc_obj(*mlxsw_sp_port->dcb.pfc);
if (!mlxsw_sp_port->dcb.pfc)
return -ENOMEM;
mlxsw_sp_port->dcb.pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
return 0;
}
static void mlxsw_sp_port_pfc_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
kfree(mlxsw_sp_port->dcb.pfc);
}
int mlxsw_sp_port_dcb_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
int err;
err = mlxsw_sp_port_ets_init(mlxsw_sp_port);
if (err)
return err;
err = mlxsw_sp_port_maxrate_init(mlxsw_sp_port);
if (err)
goto err_port_maxrate_init;
err = mlxsw_sp_port_pfc_init(mlxsw_sp_port);
if (err)
goto err_port_pfc_init;
mlxsw_sp_port->dcb.trust_state = MLXSW_REG_QPTS_TRUST_STATE_PCP;
mlxsw_sp_port->dev->dcbnl_ops = &mlxsw_sp_dcbnl_ops;
return 0;
err_port_pfc_init:
mlxsw_sp_port_maxrate_fini(mlxsw_sp_port);
err_port_maxrate_init:
mlxsw_sp_port_ets_fini(mlxsw_sp_port);
return err;
}
void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port_pfc_fini(mlxsw_sp_port);
mlxsw_sp_port_maxrate_fini(mlxsw_sp_port);
mlxsw_sp_port_ets_fini(mlxsw_sp_port);
}
